From c06e77109c4eb064e9b5ed86e37fd4cfb5d8cc7f Mon Sep 17 00:00:00 2001 From: LeRoyce Pearson Date: Fri, 10 Dec 2021 20:17:29 -0700 Subject: [PATCH 01/19] Switch to a more minimal style of binding * Convert c-style error codes to zig errors * Allow `object.method()` style function calls * Provide functions that don't require the user to constantly cast to a different type. --- .gitignore | 2 + LICENSE | 9 + build.zig | 16 +- dep/sqlite/shell.c | 22857 ++++ dep/sqlite/sqlite3.c | 237435 ++++++++++++++++++++++++++++++++++++ dep/sqlite/sqlite3.h | 12492 ++ dep/sqlite/sqlite3ext.h | 675 + examples/blog.zig | 91 +- examples/simple-exec.zig | 35 + examples/simple.zig | 32 +- src/error.zig | 292 +- src/sqlite.zig | 484 - src/sqlite3.zig | 359 + zig.mod | 6 + 14 files changed, 274151 insertions(+), 634 deletions(-) create mode 100644 LICENSE create mode 100644 dep/sqlite/shell.c create mode 100644 dep/sqlite/sqlite3.c create mode 100644 dep/sqlite/sqlite3.h create mode 100644 dep/sqlite/sqlite3ext.h create mode 100644 examples/simple-exec.zig delete mode 100644 src/sqlite.zig create mode 100644 src/sqlite3.zig create mode 100644 zig.mod diff --git a/.gitignore b/.gitignore index 330ff73..11b286f 100644 --- a/.gitignore +++ b/.gitignore @@ -1,2 +1,4 @@ zig-cache *.db +.zigmod +deps.zig diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..7a4ce74 --- /dev/null +++ b/LICENSE @@ -0,0 +1,9 @@ +MIT License + +Copyright (c) 2022 LeRoyce Pearson + +Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/build.zig b/build.zig index 0901f5a..8da0289 100644 --- a/build.zig +++ b/build.zig @@ -2,6 +2,7 @@ const std = @import("std"); const Builder = std.build.Builder; const EXAMPLES = .{ + "simple-exec", "simple", "blog", }; @@ -9,21 +10,24 @@ const EXAMPLES = .{ pub fn build(b: *Builder) void { const mode = b.standardReleaseOptions(); - const tests = b.addTest("src/sqlite.zig"); + const tests = b.addTest("src/sqlite3.zig"); tests.setBuildMode(mode); - tests.linkSystemLibrary("sqlite3"); - tests.linkSystemLibrary("c"); + tests.addCSourceFile("dep/sqlite/sqlite3.c", &.{}); + tests.linkLibC(); const test_step = b.step("test", "Run all tests"); test_step.dependOn(&tests.step); + const target = b.standardTargetOptions(.{}); + const all_example_step = b.step("examples", "Build examples"); inline for (EXAMPLES) |example_name| { const example = b.addExecutable(example_name, "examples" ++ std.fs.path.sep_str ++ example_name ++ ".zig"); - example.addPackagePath("sqlite", "src/sqlite.zig"); + example.addPackagePath("sqlite", "src/sqlite3.zig"); example.setBuildMode(mode); - example.linkSystemLibrary("sqlite3"); - example.linkSystemLibrary("c"); + example.setTarget(target); + example.addCSourceFile("dep/sqlite/sqlite3.c", &.{}); + example.linkLibC(); b.step("run-example-" ++ example_name, "Run the " ++ example_name ++ " example").dependOn(&example.run().step); all_example_step.dependOn(&example.step); diff --git a/dep/sqlite/shell.c b/dep/sqlite/shell.c new file mode 100644 index 0000000..1d0c139 --- /dev/null +++ b/dep/sqlite/shell.c @@ -0,0 +1,22857 @@ +/* DO NOT EDIT! +** This file is automatically generated by the script in the canonical +** SQLite source tree at tool/mkshellc.tcl. That script combines source +** code from various constituent source files of SQLite into this single +** "shell.c" file used to implement the SQLite command-line shell. +** +** Most of the code found below comes from the "src/shell.c.in" file in +** the canonical SQLite source tree. That main file contains "INCLUDE" +** lines that specify other files in the canonical source tree that are +** inserted to getnerate this complete program source file. +** +** The code from multiple files is combined into this single "shell.c" +** source file to help make the command-line program easier to compile. +** +** To modify this program, get a copy of the canonical SQLite source tree, +** edit the src/shell.c.in" and/or some of the other files that are included +** by "src/shell.c.in", then rerun the tool/mkshellc.tcl script. +*/ +/* +** 2001 September 15 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +************************************************************************* +** This file contains code to implement the "sqlite" command line +** utility for accessing SQLite databases. +*/ +#if (defined(_WIN32) || defined(WIN32)) && !defined(_CRT_SECURE_NO_WARNINGS) +/* This needs to come before any includes for MSVC compiler */ +#define _CRT_SECURE_NO_WARNINGS +#endif + +/* +** Optionally #include a user-defined header, whereby compilation options +** may be set prior to where they take effect, but after platform setup. +** If SQLITE_CUSTOM_INCLUDE=? is defined, its value names the #include +** file. Note that this macro has a like effect on sqlite3.c compilation. +*/ +#ifdef SQLITE_CUSTOM_INCLUDE +# define INC_STRINGIFY_(f) #f +# define INC_STRINGIFY(f) INC_STRINGIFY_(f) +# include INC_STRINGIFY(SQLITE_CUSTOM_INCLUDE) +#endif + +/* +** Determine if we are dealing with WinRT, which provides only a subset of +** the full Win32 API. +*/ +#if !defined(SQLITE_OS_WINRT) +# define SQLITE_OS_WINRT 0 +#endif + +/* +** Warning pragmas copied from msvc.h in the core. +*/ +#if defined(_MSC_VER) +#pragma warning(disable : 4054) +#pragma warning(disable : 4055) +#pragma warning(disable : 4100) +#pragma warning(disable : 4127) +#pragma warning(disable : 4130) +#pragma warning(disable : 4152) +#pragma warning(disable : 4189) +#pragma warning(disable : 4206) +#pragma warning(disable : 4210) +#pragma warning(disable : 4232) +#pragma warning(disable : 4244) +#pragma warning(disable : 4305) +#pragma warning(disable : 4306) +#pragma warning(disable : 4702) +#pragma warning(disable : 4706) +#endif /* defined(_MSC_VER) */ + +/* +** No support for loadable extensions in VxWorks. +*/ +#if (defined(__RTP__) || defined(_WRS_KERNEL)) && !SQLITE_OMIT_LOAD_EXTENSION +# define SQLITE_OMIT_LOAD_EXTENSION 1 +#endif + +/* +** Enable large-file support for fopen() and friends on unix. +*/ +#ifndef SQLITE_DISABLE_LFS +# define _LARGE_FILE 1 +# ifndef _FILE_OFFSET_BITS +# define _FILE_OFFSET_BITS 64 +# endif +# define _LARGEFILE_SOURCE 1 +#endif + +#include +#include +#include +#include +#include "sqlite3.h" +typedef sqlite3_int64 i64; +typedef sqlite3_uint64 u64; +typedef unsigned char u8; +#if SQLITE_USER_AUTHENTICATION +# include "sqlite3userauth.h" +#endif +#include +#include + +#if !defined(_WIN32) && !defined(WIN32) +# include +# if !defined(__RTP__) && !defined(_WRS_KERNEL) +# include +# endif +#endif +#if (!defined(_WIN32) && !defined(WIN32)) || defined(__MINGW32__) +# include +# include +# define GETPID getpid +# if defined(__MINGW32__) +# define DIRENT dirent +# ifndef S_ISLNK +# define S_ISLNK(mode) (0) +# endif +# endif +#else +# define GETPID (int)GetCurrentProcessId +#endif +#include +#include + +#if HAVE_READLINE +# include +# include +#endif + +#if HAVE_EDITLINE +# include +#endif + +#if HAVE_EDITLINE || HAVE_READLINE + +# define shell_add_history(X) add_history(X) +# define shell_read_history(X) read_history(X) +# define shell_write_history(X) write_history(X) +# define shell_stifle_history(X) stifle_history(X) +# define shell_readline(X) readline(X) + +#elif HAVE_LINENOISE + +# include "linenoise.h" +# define shell_add_history(X) linenoiseHistoryAdd(X) +# define shell_read_history(X) linenoiseHistoryLoad(X) +# define shell_write_history(X) linenoiseHistorySave(X) +# define shell_stifle_history(X) linenoiseHistorySetMaxLen(X) +# define shell_readline(X) linenoise(X) + +#else + +# define shell_read_history(X) +# define shell_write_history(X) +# define shell_stifle_history(X) + +# define SHELL_USE_LOCAL_GETLINE 1 +#endif + + +#if defined(_WIN32) || defined(WIN32) +# if SQLITE_OS_WINRT +# define SQLITE_OMIT_POPEN 1 +# else +# include +# include +# define isatty(h) _isatty(h) +# ifndef access +# define access(f,m) _access((f),(m)) +# endif +# ifndef unlink +# define unlink _unlink +# endif +# ifndef strdup +# define strdup _strdup +# endif +# undef popen +# define popen _popen +# undef pclose +# define pclose _pclose +# endif +#else + /* Make sure isatty() has a prototype. */ + extern int isatty(int); + +# if !defined(__RTP__) && !defined(_WRS_KERNEL) + /* popen and pclose are not C89 functions and so are + ** sometimes omitted from the header */ + extern FILE *popen(const char*,const char*); + extern int pclose(FILE*); +# else +# define SQLITE_OMIT_POPEN 1 +# endif +#endif + +#if defined(_WIN32_WCE) +/* Windows CE (arm-wince-mingw32ce-gcc) does not provide isatty() + * thus we always assume that we have a console. That can be + * overridden with the -batch command line option. + */ +#define isatty(x) 1 +#endif + +/* ctype macros that work with signed characters */ +#define IsSpace(X) isspace((unsigned char)X) +#define IsDigit(X) isdigit((unsigned char)X) +#define ToLower(X) (char)tolower((unsigned char)X) + +#if defined(_WIN32) || defined(WIN32) +#if SQLITE_OS_WINRT +#include +#endif +#include + +/* string conversion routines only needed on Win32 */ +extern char *sqlite3_win32_unicode_to_utf8(LPCWSTR); +extern char *sqlite3_win32_mbcs_to_utf8_v2(const char *, int); +extern char *sqlite3_win32_utf8_to_mbcs_v2(const char *, int); +extern LPWSTR sqlite3_win32_utf8_to_unicode(const char *zText); +#endif + +/* On Windows, we normally run with output mode of TEXT so that \n characters +** are automatically translated into \r\n. However, this behavior needs +** to be disabled in some cases (ex: when generating CSV output and when +** rendering quoted strings that contain \n characters). The following +** routines take care of that. +*/ +#if (defined(_WIN32) || defined(WIN32)) && !SQLITE_OS_WINRT +static void setBinaryMode(FILE *file, int isOutput){ + if( isOutput ) fflush(file); + _setmode(_fileno(file), _O_BINARY); +} +static void setTextMode(FILE *file, int isOutput){ + if( isOutput ) fflush(file); + _setmode(_fileno(file), _O_TEXT); +} +#else +# define setBinaryMode(X,Y) +# define setTextMode(X,Y) +#endif + + +/* True if the timer is enabled */ +static int enableTimer = 0; + +/* Return the current wall-clock time */ +static sqlite3_int64 timeOfDay(void){ + static sqlite3_vfs *clockVfs = 0; + sqlite3_int64 t; + if( clockVfs==0 ) clockVfs = sqlite3_vfs_find(0); + if( clockVfs==0 ) return 0; /* Never actually happens */ + if( clockVfs->iVersion>=2 && clockVfs->xCurrentTimeInt64!=0 ){ + clockVfs->xCurrentTimeInt64(clockVfs, &t); + }else{ + double r; + clockVfs->xCurrentTime(clockVfs, &r); + t = (sqlite3_int64)(r*86400000.0); + } + return t; +} + +#if !defined(_WIN32) && !defined(WIN32) && !defined(__minux) +#include +#include + +/* VxWorks does not support getrusage() as far as we can determine */ +#if defined(_WRS_KERNEL) || defined(__RTP__) +struct rusage { + struct timeval ru_utime; /* user CPU time used */ + struct timeval ru_stime; /* system CPU time used */ +}; +#define getrusage(A,B) memset(B,0,sizeof(*B)) +#endif + +/* Saved resource information for the beginning of an operation */ +static struct rusage sBegin; /* CPU time at start */ +static sqlite3_int64 iBegin; /* Wall-clock time at start */ + +/* +** Begin timing an operation +*/ +static void beginTimer(void){ + if( enableTimer ){ + getrusage(RUSAGE_SELF, &sBegin); + iBegin = timeOfDay(); + } +} + +/* Return the difference of two time_structs in seconds */ +static double timeDiff(struct timeval *pStart, struct timeval *pEnd){ + return (pEnd->tv_usec - pStart->tv_usec)*0.000001 + + (double)(pEnd->tv_sec - pStart->tv_sec); +} + +/* +** Print the timing results. +*/ +static void endTimer(void){ + if( enableTimer ){ + sqlite3_int64 iEnd = timeOfDay(); + struct rusage sEnd; + getrusage(RUSAGE_SELF, &sEnd); + printf("Run Time: real %.3f user %f sys %f\n", + (iEnd - iBegin)*0.001, + timeDiff(&sBegin.ru_utime, &sEnd.ru_utime), + timeDiff(&sBegin.ru_stime, &sEnd.ru_stime)); + } +} + +#define BEGIN_TIMER beginTimer() +#define END_TIMER endTimer() +#define HAS_TIMER 1 + +#elif (defined(_WIN32) || defined(WIN32)) + +/* Saved resource information for the beginning of an operation */ +static HANDLE hProcess; +static FILETIME ftKernelBegin; +static FILETIME ftUserBegin; +static sqlite3_int64 ftWallBegin; +typedef BOOL (WINAPI *GETPROCTIMES)(HANDLE, LPFILETIME, LPFILETIME, + LPFILETIME, LPFILETIME); +static GETPROCTIMES getProcessTimesAddr = NULL; + +/* +** Check to see if we have timer support. Return 1 if necessary +** support found (or found previously). +*/ +static int hasTimer(void){ + if( getProcessTimesAddr ){ + return 1; + } else { +#if !SQLITE_OS_WINRT + /* GetProcessTimes() isn't supported in WIN95 and some other Windows + ** versions. See if the version we are running on has it, and if it + ** does, save off a pointer to it and the current process handle. + */ + hProcess = GetCurrentProcess(); + if( hProcess ){ + HINSTANCE hinstLib = LoadLibrary(TEXT("Kernel32.dll")); + if( NULL != hinstLib ){ + getProcessTimesAddr = + (GETPROCTIMES) GetProcAddress(hinstLib, "GetProcessTimes"); + if( NULL != getProcessTimesAddr ){ + return 1; + } + FreeLibrary(hinstLib); + } + } +#endif + } + return 0; +} + +/* +** Begin timing an operation +*/ +static void beginTimer(void){ + if( enableTimer && getProcessTimesAddr ){ + FILETIME ftCreation, ftExit; + getProcessTimesAddr(hProcess,&ftCreation,&ftExit, + &ftKernelBegin,&ftUserBegin); + ftWallBegin = timeOfDay(); + } +} + +/* Return the difference of two FILETIME structs in seconds */ +static double timeDiff(FILETIME *pStart, FILETIME *pEnd){ + sqlite_int64 i64Start = *((sqlite_int64 *) pStart); + sqlite_int64 i64End = *((sqlite_int64 *) pEnd); + return (double) ((i64End - i64Start) / 10000000.0); +} + +/* +** Print the timing results. +*/ +static void endTimer(void){ + if( enableTimer && getProcessTimesAddr){ + FILETIME ftCreation, ftExit, ftKernelEnd, ftUserEnd; + sqlite3_int64 ftWallEnd = timeOfDay(); + getProcessTimesAddr(hProcess,&ftCreation,&ftExit,&ftKernelEnd,&ftUserEnd); + printf("Run Time: real %.3f user %f sys %f\n", + (ftWallEnd - ftWallBegin)*0.001, + timeDiff(&ftUserBegin, &ftUserEnd), + timeDiff(&ftKernelBegin, &ftKernelEnd)); + } +} + +#define BEGIN_TIMER beginTimer() +#define END_TIMER endTimer() +#define HAS_TIMER hasTimer() + +#else +#define BEGIN_TIMER +#define END_TIMER +#define HAS_TIMER 0 +#endif + +/* +** Used to prevent warnings about unused parameters +*/ +#define UNUSED_PARAMETER(x) (void)(x) + +/* +** Number of elements in an array +*/ +#define ArraySize(X) (int)(sizeof(X)/sizeof(X[0])) + +/* +** If the following flag is set, then command execution stops +** at an error if we are not interactive. +*/ +static int bail_on_error = 0; + +/* +** Threat stdin as an interactive input if the following variable +** is true. Otherwise, assume stdin is connected to a file or pipe. +*/ +static int stdin_is_interactive = 1; + +/* +** On Windows systems we have to know if standard output is a console +** in order to translate UTF-8 into MBCS. The following variable is +** true if translation is required. +*/ +static int stdout_is_console = 1; + +/* +** The following is the open SQLite database. We make a pointer +** to this database a static variable so that it can be accessed +** by the SIGINT handler to interrupt database processing. +*/ +static sqlite3 *globalDb = 0; + +/* +** True if an interrupt (Control-C) has been received. +*/ +static volatile int seenInterrupt = 0; + +#ifdef SQLITE_DEBUG +/* +** Out-of-memory simulator variables +*/ +static unsigned int oomCounter = 0; /* Simulate OOM when equals 1 */ +static unsigned int oomRepeat = 0; /* Number of OOMs in a row */ +static void*(*defaultMalloc)(int) = 0; /* The low-level malloc routine */ +#endif /* SQLITE_DEBUG */ + +/* +** This is the name of our program. It is set in main(), used +** in a number of other places, mostly for error messages. +*/ +static char *Argv0; + +/* +** Prompt strings. Initialized in main. Settable with +** .prompt main continue +*/ +static char mainPrompt[20]; /* First line prompt. default: "sqlite> "*/ +static char continuePrompt[20]; /* Continuation prompt. default: " ...> " */ + +/* +** Render output like fprintf(). Except, if the output is going to the +** console and if this is running on a Windows machine, translate the +** output from UTF-8 into MBCS. +*/ +#if defined(_WIN32) || defined(WIN32) +void utf8_printf(FILE *out, const char *zFormat, ...){ + va_list ap; + va_start(ap, zFormat); + if( stdout_is_console && (out==stdout || out==stderr) ){ + char *z1 = sqlite3_vmprintf(zFormat, ap); + char *z2 = sqlite3_win32_utf8_to_mbcs_v2(z1, 0); + sqlite3_free(z1); + fputs(z2, out); + sqlite3_free(z2); + }else{ + vfprintf(out, zFormat, ap); + } + va_end(ap); +} +#elif !defined(utf8_printf) +# define utf8_printf fprintf +#endif + +/* +** Render output like fprintf(). This should not be used on anything that +** includes string formatting (e.g. "%s"). +*/ +#if !defined(raw_printf) +# define raw_printf fprintf +#endif + +/* Indicate out-of-memory and exit. */ +static void shell_out_of_memory(void){ + raw_printf(stderr,"Error: out of memory\n"); + exit(1); +} + +#ifdef SQLITE_DEBUG +/* This routine is called when a simulated OOM occurs. It is broken +** out as a separate routine to make it easy to set a breakpoint on +** the OOM +*/ +void shellOomFault(void){ + if( oomRepeat>0 ){ + oomRepeat--; + }else{ + oomCounter--; + } +} +#endif /* SQLITE_DEBUG */ + +#ifdef SQLITE_DEBUG +/* This routine is a replacement malloc() that is used to simulate +** Out-Of-Memory (OOM) errors for testing purposes. +*/ +static void *oomMalloc(int nByte){ + if( oomCounter ){ + if( oomCounter==1 ){ + shellOomFault(); + return 0; + }else{ + oomCounter--; + } + } + return defaultMalloc(nByte); +} +#endif /* SQLITE_DEBUG */ + +#ifdef SQLITE_DEBUG +/* Register the OOM simulator. This must occur before any memory +** allocations */ +static void registerOomSimulator(void){ + sqlite3_mem_methods mem; + sqlite3_config(SQLITE_CONFIG_GETMALLOC, &mem); + defaultMalloc = mem.xMalloc; + mem.xMalloc = oomMalloc; + sqlite3_config(SQLITE_CONFIG_MALLOC, &mem); +} +#endif + +/* +** Write I/O traces to the following stream. +*/ +#ifdef SQLITE_ENABLE_IOTRACE +static FILE *iotrace = 0; +#endif + +/* +** This routine works like printf in that its first argument is a +** format string and subsequent arguments are values to be substituted +** in place of % fields. The result of formatting this string +** is written to iotrace. +*/ +#ifdef SQLITE_ENABLE_IOTRACE +static void SQLITE_CDECL iotracePrintf(const char *zFormat, ...){ + va_list ap; + char *z; + if( iotrace==0 ) return; + va_start(ap, zFormat); + z = sqlite3_vmprintf(zFormat, ap); + va_end(ap); + utf8_printf(iotrace, "%s", z); + sqlite3_free(z); +} +#endif + +/* +** Output string zUtf to stream pOut as w characters. If w is negative, +** then right-justify the text. W is the width in UTF-8 characters, not +** in bytes. This is different from the %*.*s specification in printf +** since with %*.*s the width is measured in bytes, not characters. +*/ +static void utf8_width_print(FILE *pOut, int w, const char *zUtf){ + int i; + int n; + int aw = w<0 ? -w : w; + for(i=n=0; zUtf[i]; i++){ + if( (zUtf[i]&0xc0)!=0x80 ){ + n++; + if( n==aw ){ + do{ i++; }while( (zUtf[i]&0xc0)==0x80 ); + break; + } + } + } + if( n>=aw ){ + utf8_printf(pOut, "%.*s", i, zUtf); + }else if( w<0 ){ + utf8_printf(pOut, "%*s%s", aw-n, "", zUtf); + }else{ + utf8_printf(pOut, "%s%*s", zUtf, aw-n, ""); + } +} + + +/* +** Determines if a string is a number of not. +*/ +static int isNumber(const char *z, int *realnum){ + if( *z=='-' || *z=='+' ) z++; + if( !IsDigit(*z) ){ + return 0; + } + z++; + if( realnum ) *realnum = 0; + while( IsDigit(*z) ){ z++; } + if( *z=='.' ){ + z++; + if( !IsDigit(*z) ) return 0; + while( IsDigit(*z) ){ z++; } + if( realnum ) *realnum = 1; + } + if( *z=='e' || *z=='E' ){ + z++; + if( *z=='+' || *z=='-' ) z++; + if( !IsDigit(*z) ) return 0; + while( IsDigit(*z) ){ z++; } + if( realnum ) *realnum = 1; + } + return *z==0; +} + +/* +** Compute a string length that is limited to what can be stored in +** lower 30 bits of a 32-bit signed integer. +*/ +static int strlen30(const char *z){ + const char *z2 = z; + while( *z2 ){ z2++; } + return 0x3fffffff & (int)(z2 - z); +} + +/* +** Return the length of a string in characters. Multibyte UTF8 characters +** count as a single character. +*/ +static int strlenChar(const char *z){ + int n = 0; + while( *z ){ + if( (0xc0&*(z++))!=0x80 ) n++; + } + return n; +} + +/* +** Return open FILE * if zFile exists, can be opened for read +** and is an ordinary file or a character stream source. +** Otherwise return 0. +*/ +static FILE * openChrSource(const char *zFile){ +#ifdef _WIN32 + struct _stat x = {0}; +# define STAT_CHR_SRC(mode) ((mode & (_S_IFCHR|_S_IFIFO|_S_IFREG))!=0) + /* On Windows, open first, then check the stream nature. This order + ** is necessary because _stat() and sibs, when checking a named pipe, + ** effectively break the pipe as its supplier sees it. */ + FILE *rv = fopen(zFile, "rb"); + if( rv==0 ) return 0; + if( _fstat(_fileno(rv), &x) != 0 + || !STAT_CHR_SRC(x.st_mode)){ + fclose(rv); + rv = 0; + } + return rv; +#else + struct stat x = {0}; + int rc = stat(zFile, &x); +# define STAT_CHR_SRC(mode) (S_ISREG(mode)||S_ISFIFO(mode)||S_ISCHR(mode)) + if( rc!=0 ) return 0; + if( STAT_CHR_SRC(x.st_mode) ){ + return fopen(zFile, "rb"); + }else{ + return 0; + } +#endif +#undef STAT_CHR_SRC +} + +/* +** This routine reads a line of text from FILE in, stores +** the text in memory obtained from malloc() and returns a pointer +** to the text. NULL is returned at end of file, or if malloc() +** fails. +** +** If zLine is not NULL then it is a malloced buffer returned from +** a previous call to this routine that may be reused. +*/ +static char *local_getline(char *zLine, FILE *in){ + int nLine = zLine==0 ? 0 : 100; + int n = 0; + + while( 1 ){ + if( n+100>nLine ){ + nLine = nLine*2 + 100; + zLine = realloc(zLine, nLine); + if( zLine==0 ) shell_out_of_memory(); + } + if( fgets(&zLine[n], nLine - n, in)==0 ){ + if( n==0 ){ + free(zLine); + return 0; + } + zLine[n] = 0; + break; + } + while( zLine[n] ) n++; + if( n>0 && zLine[n-1]=='\n' ){ + n--; + if( n>0 && zLine[n-1]=='\r' ) n--; + zLine[n] = 0; + break; + } + } +#if defined(_WIN32) || defined(WIN32) + /* For interactive input on Windows systems, translate the + ** multi-byte characterset characters into UTF-8. */ + if( stdin_is_interactive && in==stdin ){ + char *zTrans = sqlite3_win32_mbcs_to_utf8_v2(zLine, 0); + if( zTrans ){ + int nTrans = strlen30(zTrans)+1; + if( nTrans>nLine ){ + zLine = realloc(zLine, nTrans); + if( zLine==0 ) shell_out_of_memory(); + } + memcpy(zLine, zTrans, nTrans); + sqlite3_free(zTrans); + } + } +#endif /* defined(_WIN32) || defined(WIN32) */ + return zLine; +} + +/* +** Retrieve a single line of input text. +** +** If in==0 then read from standard input and prompt before each line. +** If isContinuation is true, then a continuation prompt is appropriate. +** If isContinuation is zero, then the main prompt should be used. +** +** If zPrior is not NULL then it is a buffer from a prior call to this +** routine that can be reused. +** +** The result is stored in space obtained from malloc() and must either +** be freed by the caller or else passed back into this routine via the +** zPrior argument for reuse. +*/ +static char *one_input_line(FILE *in, char *zPrior, int isContinuation){ + char *zPrompt; + char *zResult; + if( in!=0 ){ + zResult = local_getline(zPrior, in); + }else{ + zPrompt = isContinuation ? continuePrompt : mainPrompt; +#if SHELL_USE_LOCAL_GETLINE + printf("%s", zPrompt); + fflush(stdout); + zResult = local_getline(zPrior, stdin); +#else + free(zPrior); + zResult = shell_readline(zPrompt); + if( zResult && *zResult ) shell_add_history(zResult); +#endif + } + return zResult; +} + + +/* +** Return the value of a hexadecimal digit. Return -1 if the input +** is not a hex digit. +*/ +static int hexDigitValue(char c){ + if( c>='0' && c<='9' ) return c - '0'; + if( c>='a' && c<='f' ) return c - 'a' + 10; + if( c>='A' && c<='F' ) return c - 'A' + 10; + return -1; +} + +/* +** Interpret zArg as an integer value, possibly with suffixes. +*/ +static sqlite3_int64 integerValue(const char *zArg){ + sqlite3_int64 v = 0; + static const struct { char *zSuffix; int iMult; } aMult[] = { + { "KiB", 1024 }, + { "MiB", 1024*1024 }, + { "GiB", 1024*1024*1024 }, + { "KB", 1000 }, + { "MB", 1000000 }, + { "GB", 1000000000 }, + { "K", 1000 }, + { "M", 1000000 }, + { "G", 1000000000 }, + }; + int i; + int isNeg = 0; + if( zArg[0]=='-' ){ + isNeg = 1; + zArg++; + }else if( zArg[0]=='+' ){ + zArg++; + } + if( zArg[0]=='0' && zArg[1]=='x' ){ + int x; + zArg += 2; + while( (x = hexDigitValue(zArg[0]))>=0 ){ + v = (v<<4) + x; + zArg++; + } + }else{ + while( IsDigit(zArg[0]) ){ + v = v*10 + zArg[0] - '0'; + zArg++; + } + } + for(i=0; iz); + initText(p); +} + +/* zIn is either a pointer to a NULL-terminated string in memory obtained +** from malloc(), or a NULL pointer. The string pointed to by zAppend is +** added to zIn, and the result returned in memory obtained from malloc(). +** zIn, if it was not NULL, is freed. +** +** If the third argument, quote, is not '\0', then it is used as a +** quote character for zAppend. +*/ +static void appendText(ShellText *p, char const *zAppend, char quote){ + int len; + int i; + int nAppend = strlen30(zAppend); + + len = nAppend+p->n+1; + if( quote ){ + len += 2; + for(i=0; iz==0 || p->n+len>=p->nAlloc ){ + p->nAlloc = p->nAlloc*2 + len + 20; + p->z = realloc(p->z, p->nAlloc); + if( p->z==0 ) shell_out_of_memory(); + } + + if( quote ){ + char *zCsr = p->z+p->n; + *zCsr++ = quote; + for(i=0; in = (int)(zCsr - p->z); + *zCsr = '\0'; + }else{ + memcpy(p->z+p->n, zAppend, nAppend); + p->n += nAppend; + p->z[p->n] = '\0'; + } +} + +/* +** Attempt to determine if identifier zName needs to be quoted, either +** because it contains non-alphanumeric characters, or because it is an +** SQLite keyword. Be conservative in this estimate: When in doubt assume +** that quoting is required. +** +** Return '"' if quoting is required. Return 0 if no quoting is required. +*/ +static char quoteChar(const char *zName){ + int i; + if( !isalpha((unsigned char)zName[0]) && zName[0]!='_' ) return '"'; + for(i=0; zName[i]; i++){ + if( !isalnum((unsigned char)zName[i]) && zName[i]!='_' ) return '"'; + } + return sqlite3_keyword_check(zName, i) ? '"' : 0; +} + +/* +** Construct a fake object name and column list to describe the structure +** of the view, virtual table, or table valued function zSchema.zName. +*/ +static char *shellFakeSchema( + sqlite3 *db, /* The database connection containing the vtab */ + const char *zSchema, /* Schema of the database holding the vtab */ + const char *zName /* The name of the virtual table */ +){ + sqlite3_stmt *pStmt = 0; + char *zSql; + ShellText s; + char cQuote; + char *zDiv = "("; + int nRow = 0; + + zSql = sqlite3_mprintf("PRAGMA \"%w\".table_info=%Q;", + zSchema ? zSchema : "main", zName); + sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0); + sqlite3_free(zSql); + initText(&s); + if( zSchema ){ + cQuote = quoteChar(zSchema); + if( cQuote && sqlite3_stricmp(zSchema,"temp")==0 ) cQuote = 0; + appendText(&s, zSchema, cQuote); + appendText(&s, ".", 0); + } + cQuote = quoteChar(zName); + appendText(&s, zName, cQuote); + while( sqlite3_step(pStmt)==SQLITE_ROW ){ + const char *zCol = (const char*)sqlite3_column_text(pStmt, 1); + nRow++; + appendText(&s, zDiv, 0); + zDiv = ","; + cQuote = quoteChar(zCol); + appendText(&s, zCol, cQuote); + } + appendText(&s, ")", 0); + sqlite3_finalize(pStmt); + if( nRow==0 ){ + freeText(&s); + s.z = 0; + } + return s.z; +} + +/* +** SQL function: shell_module_schema(X) +** +** Return a fake schema for the table-valued function or eponymous virtual +** table X. +*/ +static void shellModuleSchema( + sqlite3_context *pCtx, + int nVal, + sqlite3_value **apVal +){ + const char *zName = (const char*)sqlite3_value_text(apVal[0]); + char *zFake = shellFakeSchema(sqlite3_context_db_handle(pCtx), 0, zName); + UNUSED_PARAMETER(nVal); + if( zFake ){ + sqlite3_result_text(pCtx, sqlite3_mprintf("/* %s */", zFake), + -1, sqlite3_free); + free(zFake); + } +} + +/* +** SQL function: shell_add_schema(S,X) +** +** Add the schema name X to the CREATE statement in S and return the result. +** Examples: +** +** CREATE TABLE t1(x) -> CREATE TABLE xyz.t1(x); +** +** Also works on +** +** CREATE INDEX +** CREATE UNIQUE INDEX +** CREATE VIEW +** CREATE TRIGGER +** CREATE VIRTUAL TABLE +** +** This UDF is used by the .schema command to insert the schema name of +** attached databases into the middle of the sqlite_schema.sql field. +*/ +static void shellAddSchemaName( + sqlite3_context *pCtx, + int nVal, + sqlite3_value **apVal +){ + static const char *aPrefix[] = { + "TABLE", + "INDEX", + "UNIQUE INDEX", + "VIEW", + "TRIGGER", + "VIRTUAL TABLE" + }; + int i = 0; + const char *zIn = (const char*)sqlite3_value_text(apVal[0]); + const char *zSchema = (const char*)sqlite3_value_text(apVal[1]); + const char *zName = (const char*)sqlite3_value_text(apVal[2]); + sqlite3 *db = sqlite3_context_db_handle(pCtx); + UNUSED_PARAMETER(nVal); + if( zIn!=0 && strncmp(zIn, "CREATE ", 7)==0 ){ + for(i=0; i +#include +#include +#include +#include +#include +#include + +/* +** We may need several defines that should have been in "sys/stat.h". +*/ + +#ifndef S_ISREG +#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG) +#endif + +#ifndef S_ISDIR +#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR) +#endif + +#ifndef S_ISLNK +#define S_ISLNK(mode) (0) +#endif + +/* +** We may need to provide the "mode_t" type. +*/ + +#ifndef MODE_T_DEFINED + #define MODE_T_DEFINED + typedef unsigned short mode_t; +#endif + +/* +** We may need to provide the "ino_t" type. +*/ + +#ifndef INO_T_DEFINED + #define INO_T_DEFINED + typedef unsigned short ino_t; +#endif + +/* +** We need to define "NAME_MAX" if it was not present in "limits.h". +*/ + +#ifndef NAME_MAX +# ifdef FILENAME_MAX +# define NAME_MAX (FILENAME_MAX) +# else +# define NAME_MAX (260) +# endif +#endif + +/* +** We need to define "NULL_INTPTR_T" and "BAD_INTPTR_T". +*/ + +#ifndef NULL_INTPTR_T +# define NULL_INTPTR_T ((intptr_t)(0)) +#endif + +#ifndef BAD_INTPTR_T +# define BAD_INTPTR_T ((intptr_t)(-1)) +#endif + +/* +** We need to provide the necessary structures and related types. +*/ + +#ifndef DIRENT_DEFINED +#define DIRENT_DEFINED +typedef struct DIRENT DIRENT; +typedef DIRENT *LPDIRENT; +struct DIRENT { + ino_t d_ino; /* Sequence number, do not use. */ + unsigned d_attributes; /* Win32 file attributes. */ + char d_name[NAME_MAX + 1]; /* Name within the directory. */ +}; +#endif + +#ifndef DIR_DEFINED +#define DIR_DEFINED +typedef struct DIR DIR; +typedef DIR *LPDIR; +struct DIR { + intptr_t d_handle; /* Value returned by "_findfirst". */ + DIRENT d_first; /* DIRENT constructed based on "_findfirst". */ + DIRENT d_next; /* DIRENT constructed based on "_findnext". */ +}; +#endif + +/* +** Provide a macro, for use by the implementation, to determine if a +** particular directory entry should be skipped over when searching for +** the next directory entry that should be returned by the readdir() or +** readdir_r() functions. +*/ + +#ifndef is_filtered +# define is_filtered(a) ((((a).attrib)&_A_HIDDEN) || (((a).attrib)&_A_SYSTEM)) +#endif + +/* +** Provide the function prototype for the POSIX compatiable getenv() +** function. This function is not thread-safe. +*/ + +extern const char *windirent_getenv(const char *name); + +/* +** Finally, we can provide the function prototypes for the opendir(), +** readdir(), readdir_r(), and closedir() POSIX functions. +*/ + +extern LPDIR opendir(const char *dirname); +extern LPDIRENT readdir(LPDIR dirp); +extern INT readdir_r(LPDIR dirp, LPDIRENT entry, LPDIRENT *result); +extern INT closedir(LPDIR dirp); + +#endif /* defined(WIN32) && defined(_MSC_VER) */ + +/************************* End test_windirent.h ********************/ +/************************* Begin test_windirent.c ******************/ +/* +** 2015 November 30 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +************************************************************************* +** This file contains code to implement most of the opendir() family of +** POSIX functions on Win32 using the MSVCRT. +*/ + +#if defined(_WIN32) && defined(_MSC_VER) +/* #include "test_windirent.h" */ + +/* +** Implementation of the POSIX getenv() function using the Win32 API. +** This function is not thread-safe. +*/ +const char *windirent_getenv( + const char *name +){ + static char value[32768]; /* Maximum length, per MSDN */ + DWORD dwSize = sizeof(value) / sizeof(char); /* Size in chars */ + DWORD dwRet; /* Value returned by GetEnvironmentVariableA() */ + + memset(value, 0, sizeof(value)); + dwRet = GetEnvironmentVariableA(name, value, dwSize); + if( dwRet==0 || dwRet>dwSize ){ + /* + ** The function call to GetEnvironmentVariableA() failed -OR- + ** the buffer is not large enough. Either way, return NULL. + */ + return 0; + }else{ + /* + ** The function call to GetEnvironmentVariableA() succeeded + ** -AND- the buffer contains the entire value. + */ + return value; + } +} + +/* +** Implementation of the POSIX opendir() function using the MSVCRT. +*/ +LPDIR opendir( + const char *dirname +){ + struct _finddata_t data; + LPDIR dirp = (LPDIR)sqlite3_malloc(sizeof(DIR)); + SIZE_T namesize = sizeof(data.name) / sizeof(data.name[0]); + + if( dirp==NULL ) return NULL; + memset(dirp, 0, sizeof(DIR)); + + /* TODO: Remove this if Unix-style root paths are not used. */ + if( sqlite3_stricmp(dirname, "/")==0 ){ + dirname = windirent_getenv("SystemDrive"); + } + + memset(&data, 0, sizeof(struct _finddata_t)); + _snprintf(data.name, namesize, "%s\\*", dirname); + dirp->d_handle = _findfirst(data.name, &data); + + if( dirp->d_handle==BAD_INTPTR_T ){ + closedir(dirp); + return NULL; + } + + /* TODO: Remove this block to allow hidden and/or system files. */ + if( is_filtered(data) ){ +next: + + memset(&data, 0, sizeof(struct _finddata_t)); + if( _findnext(dirp->d_handle, &data)==-1 ){ + closedir(dirp); + return NULL; + } + + /* TODO: Remove this block to allow hidden and/or system files. */ + if( is_filtered(data) ) goto next; + } + + dirp->d_first.d_attributes = data.attrib; + strncpy(dirp->d_first.d_name, data.name, NAME_MAX); + dirp->d_first.d_name[NAME_MAX] = '\0'; + + return dirp; +} + +/* +** Implementation of the POSIX readdir() function using the MSVCRT. +*/ +LPDIRENT readdir( + LPDIR dirp +){ + struct _finddata_t data; + + if( dirp==NULL ) return NULL; + + if( dirp->d_first.d_ino==0 ){ + dirp->d_first.d_ino++; + dirp->d_next.d_ino++; + + return &dirp->d_first; + } + +next: + + memset(&data, 0, sizeof(struct _finddata_t)); + if( _findnext(dirp->d_handle, &data)==-1 ) return NULL; + + /* TODO: Remove this block to allow hidden and/or system files. */ + if( is_filtered(data) ) goto next; + + dirp->d_next.d_ino++; + dirp->d_next.d_attributes = data.attrib; + strncpy(dirp->d_next.d_name, data.name, NAME_MAX); + dirp->d_next.d_name[NAME_MAX] = '\0'; + + return &dirp->d_next; +} + +/* +** Implementation of the POSIX readdir_r() function using the MSVCRT. +*/ +INT readdir_r( + LPDIR dirp, + LPDIRENT entry, + LPDIRENT *result +){ + struct _finddata_t data; + + if( dirp==NULL ) return EBADF; + + if( dirp->d_first.d_ino==0 ){ + dirp->d_first.d_ino++; + dirp->d_next.d_ino++; + + entry->d_ino = dirp->d_first.d_ino; + entry->d_attributes = dirp->d_first.d_attributes; + strncpy(entry->d_name, dirp->d_first.d_name, NAME_MAX); + entry->d_name[NAME_MAX] = '\0'; + + *result = entry; + return 0; + } + +next: + + memset(&data, 0, sizeof(struct _finddata_t)); + if( _findnext(dirp->d_handle, &data)==-1 ){ + *result = NULL; + return ENOENT; + } + + /* TODO: Remove this block to allow hidden and/or system files. */ + if( is_filtered(data) ) goto next; + + entry->d_ino = (ino_t)-1; /* not available */ + entry->d_attributes = data.attrib; + strncpy(entry->d_name, data.name, NAME_MAX); + entry->d_name[NAME_MAX] = '\0'; + + *result = entry; + return 0; +} + +/* +** Implementation of the POSIX closedir() function using the MSVCRT. +*/ +INT closedir( + LPDIR dirp +){ + INT result = 0; + + if( dirp==NULL ) return EINVAL; + + if( dirp->d_handle!=NULL_INTPTR_T && dirp->d_handle!=BAD_INTPTR_T ){ + result = _findclose(dirp->d_handle); + } + + sqlite3_free(dirp); + return result; +} + +#endif /* defined(WIN32) && defined(_MSC_VER) */ + +/************************* End test_windirent.c ********************/ +#define dirent DIRENT +#endif +/************************* Begin ../ext/misc/shathree.c ******************/ +/* +** 2017-03-08 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This SQLite extension implements functions that compute SHA3 hashes. +** Two SQL functions are implemented: +** +** sha3(X,SIZE) +** sha3_query(Y,SIZE) +** +** The sha3(X) function computes the SHA3 hash of the input X, or NULL if +** X is NULL. +** +** The sha3_query(Y) function evalutes all queries in the SQL statements of Y +** and returns a hash of their results. +** +** The SIZE argument is optional. If omitted, the SHA3-256 hash algorithm +** is used. If SIZE is included it must be one of the integers 224, 256, +** 384, or 512, to determine SHA3 hash variant that is computed. +*/ +/* #include "sqlite3ext.h" */ +SQLITE_EXTENSION_INIT1 +#include +#include +#include + +#ifndef SQLITE_AMALGAMATION +/* typedef sqlite3_uint64 u64; */ +#endif /* SQLITE_AMALGAMATION */ + +/****************************************************************************** +** The Hash Engine +*/ +/* +** Macros to determine whether the machine is big or little endian, +** and whether or not that determination is run-time or compile-time. +** +** For best performance, an attempt is made to guess at the byte-order +** using C-preprocessor macros. If that is unsuccessful, or if +** -DSHA3_BYTEORDER=0 is set, then byte-order is determined +** at run-time. +*/ +#ifndef SHA3_BYTEORDER +# if defined(i386) || defined(__i386__) || defined(_M_IX86) || \ + defined(__x86_64) || defined(__x86_64__) || defined(_M_X64) || \ + defined(_M_AMD64) || defined(_M_ARM) || defined(__x86) || \ + defined(__arm__) +# define SHA3_BYTEORDER 1234 +# elif defined(sparc) || defined(__ppc__) +# define SHA3_BYTEORDER 4321 +# else +# define SHA3_BYTEORDER 0 +# endif +#endif + + +/* +** State structure for a SHA3 hash in progress +*/ +typedef struct SHA3Context SHA3Context; +struct SHA3Context { + union { + u64 s[25]; /* Keccak state. 5x5 lines of 64 bits each */ + unsigned char x[1600]; /* ... or 1600 bytes */ + } u; + unsigned nRate; /* Bytes of input accepted per Keccak iteration */ + unsigned nLoaded; /* Input bytes loaded into u.x[] so far this cycle */ + unsigned ixMask; /* Insert next input into u.x[nLoaded^ixMask]. */ +}; + +/* +** A single step of the Keccak mixing function for a 1600-bit state +*/ +static void KeccakF1600Step(SHA3Context *p){ + int i; + u64 b0, b1, b2, b3, b4; + u64 c0, c1, c2, c3, c4; + u64 d0, d1, d2, d3, d4; + static const u64 RC[] = { + 0x0000000000000001ULL, 0x0000000000008082ULL, + 0x800000000000808aULL, 0x8000000080008000ULL, + 0x000000000000808bULL, 0x0000000080000001ULL, + 0x8000000080008081ULL, 0x8000000000008009ULL, + 0x000000000000008aULL, 0x0000000000000088ULL, + 0x0000000080008009ULL, 0x000000008000000aULL, + 0x000000008000808bULL, 0x800000000000008bULL, + 0x8000000000008089ULL, 0x8000000000008003ULL, + 0x8000000000008002ULL, 0x8000000000000080ULL, + 0x000000000000800aULL, 0x800000008000000aULL, + 0x8000000080008081ULL, 0x8000000000008080ULL, + 0x0000000080000001ULL, 0x8000000080008008ULL + }; +# define a00 (p->u.s[0]) +# define a01 (p->u.s[1]) +# define a02 (p->u.s[2]) +# define a03 (p->u.s[3]) +# define a04 (p->u.s[4]) +# define a10 (p->u.s[5]) +# define a11 (p->u.s[6]) +# define a12 (p->u.s[7]) +# define a13 (p->u.s[8]) +# define a14 (p->u.s[9]) +# define a20 (p->u.s[10]) +# define a21 (p->u.s[11]) +# define a22 (p->u.s[12]) +# define a23 (p->u.s[13]) +# define a24 (p->u.s[14]) +# define a30 (p->u.s[15]) +# define a31 (p->u.s[16]) +# define a32 (p->u.s[17]) +# define a33 (p->u.s[18]) +# define a34 (p->u.s[19]) +# define a40 (p->u.s[20]) +# define a41 (p->u.s[21]) +# define a42 (p->u.s[22]) +# define a43 (p->u.s[23]) +# define a44 (p->u.s[24]) +# define ROL64(a,x) ((a<>(64-x))) + + for(i=0; i<24; i+=4){ + c0 = a00^a10^a20^a30^a40; + c1 = a01^a11^a21^a31^a41; + c2 = a02^a12^a22^a32^a42; + c3 = a03^a13^a23^a33^a43; + c4 = a04^a14^a24^a34^a44; + d0 = c4^ROL64(c1, 1); + d1 = c0^ROL64(c2, 1); + d2 = c1^ROL64(c3, 1); + d3 = c2^ROL64(c4, 1); + d4 = c3^ROL64(c0, 1); + + b0 = (a00^d0); + b1 = ROL64((a11^d1), 44); + b2 = ROL64((a22^d2), 43); + b3 = ROL64((a33^d3), 21); + b4 = ROL64((a44^d4), 14); + a00 = b0 ^((~b1)& b2 ); + a00 ^= RC[i]; + a11 = b1 ^((~b2)& b3 ); + a22 = b2 ^((~b3)& b4 ); + a33 = b3 ^((~b4)& b0 ); + a44 = b4 ^((~b0)& b1 ); + + b2 = ROL64((a20^d0), 3); + b3 = ROL64((a31^d1), 45); + b4 = ROL64((a42^d2), 61); + b0 = ROL64((a03^d3), 28); + b1 = ROL64((a14^d4), 20); + a20 = b0 ^((~b1)& b2 ); + a31 = b1 ^((~b2)& b3 ); + a42 = b2 ^((~b3)& b4 ); + a03 = b3 ^((~b4)& b0 ); + a14 = b4 ^((~b0)& b1 ); + + b4 = ROL64((a40^d0), 18); + b0 = ROL64((a01^d1), 1); + b1 = ROL64((a12^d2), 6); + b2 = ROL64((a23^d3), 25); + b3 = ROL64((a34^d4), 8); + a40 = b0 ^((~b1)& b2 ); + a01 = b1 ^((~b2)& b3 ); + a12 = b2 ^((~b3)& b4 ); + a23 = b3 ^((~b4)& b0 ); + a34 = b4 ^((~b0)& b1 ); + + b1 = ROL64((a10^d0), 36); + b2 = ROL64((a21^d1), 10); + b3 = ROL64((a32^d2), 15); + b4 = ROL64((a43^d3), 56); + b0 = ROL64((a04^d4), 27); + a10 = b0 ^((~b1)& b2 ); + a21 = b1 ^((~b2)& b3 ); + a32 = b2 ^((~b3)& b4 ); + a43 = b3 ^((~b4)& b0 ); + a04 = b4 ^((~b0)& b1 ); + + b3 = ROL64((a30^d0), 41); + b4 = ROL64((a41^d1), 2); + b0 = ROL64((a02^d2), 62); + b1 = ROL64((a13^d3), 55); + b2 = ROL64((a24^d4), 39); + a30 = b0 ^((~b1)& b2 ); + a41 = b1 ^((~b2)& b3 ); + a02 = b2 ^((~b3)& b4 ); + a13 = b3 ^((~b4)& b0 ); + a24 = b4 ^((~b0)& b1 ); + + c0 = a00^a20^a40^a10^a30; + c1 = a11^a31^a01^a21^a41; + c2 = a22^a42^a12^a32^a02; + c3 = a33^a03^a23^a43^a13; + c4 = a44^a14^a34^a04^a24; + d0 = c4^ROL64(c1, 1); + d1 = c0^ROL64(c2, 1); + d2 = c1^ROL64(c3, 1); + d3 = c2^ROL64(c4, 1); + d4 = c3^ROL64(c0, 1); + + b0 = (a00^d0); + b1 = ROL64((a31^d1), 44); + b2 = ROL64((a12^d2), 43); + b3 = ROL64((a43^d3), 21); + b4 = ROL64((a24^d4), 14); + a00 = b0 ^((~b1)& b2 ); + a00 ^= RC[i+1]; + a31 = b1 ^((~b2)& b3 ); + a12 = b2 ^((~b3)& b4 ); + a43 = b3 ^((~b4)& b0 ); + a24 = b4 ^((~b0)& b1 ); + + b2 = ROL64((a40^d0), 3); + b3 = ROL64((a21^d1), 45); + b4 = ROL64((a02^d2), 61); + b0 = ROL64((a33^d3), 28); + b1 = ROL64((a14^d4), 20); + a40 = b0 ^((~b1)& b2 ); + a21 = b1 ^((~b2)& b3 ); + a02 = b2 ^((~b3)& b4 ); + a33 = b3 ^((~b4)& b0 ); + a14 = b4 ^((~b0)& b1 ); + + b4 = ROL64((a30^d0), 18); + b0 = ROL64((a11^d1), 1); + b1 = ROL64((a42^d2), 6); + b2 = ROL64((a23^d3), 25); + b3 = ROL64((a04^d4), 8); + a30 = b0 ^((~b1)& b2 ); + a11 = b1 ^((~b2)& b3 ); + a42 = b2 ^((~b3)& b4 ); + a23 = b3 ^((~b4)& b0 ); + a04 = b4 ^((~b0)& b1 ); + + b1 = ROL64((a20^d0), 36); + b2 = ROL64((a01^d1), 10); + b3 = ROL64((a32^d2), 15); + b4 = ROL64((a13^d3), 56); + b0 = ROL64((a44^d4), 27); + a20 = b0 ^((~b1)& b2 ); + a01 = b1 ^((~b2)& b3 ); + a32 = b2 ^((~b3)& b4 ); + a13 = b3 ^((~b4)& b0 ); + a44 = b4 ^((~b0)& b1 ); + + b3 = ROL64((a10^d0), 41); + b4 = ROL64((a41^d1), 2); + b0 = ROL64((a22^d2), 62); + b1 = ROL64((a03^d3), 55); + b2 = ROL64((a34^d4), 39); + a10 = b0 ^((~b1)& b2 ); + a41 = b1 ^((~b2)& b3 ); + a22 = b2 ^((~b3)& b4 ); + a03 = b3 ^((~b4)& b0 ); + a34 = b4 ^((~b0)& b1 ); + + c0 = a00^a40^a30^a20^a10; + c1 = a31^a21^a11^a01^a41; + c2 = a12^a02^a42^a32^a22; + c3 = a43^a33^a23^a13^a03; + c4 = a24^a14^a04^a44^a34; + d0 = c4^ROL64(c1, 1); + d1 = c0^ROL64(c2, 1); + d2 = c1^ROL64(c3, 1); + d3 = c2^ROL64(c4, 1); + d4 = c3^ROL64(c0, 1); + + b0 = (a00^d0); + b1 = ROL64((a21^d1), 44); + b2 = ROL64((a42^d2), 43); + b3 = ROL64((a13^d3), 21); + b4 = ROL64((a34^d4), 14); + a00 = b0 ^((~b1)& b2 ); + a00 ^= RC[i+2]; + a21 = b1 ^((~b2)& b3 ); + a42 = b2 ^((~b3)& b4 ); + a13 = b3 ^((~b4)& b0 ); + a34 = b4 ^((~b0)& b1 ); + + b2 = ROL64((a30^d0), 3); + b3 = ROL64((a01^d1), 45); + b4 = ROL64((a22^d2), 61); + b0 = ROL64((a43^d3), 28); + b1 = ROL64((a14^d4), 20); + a30 = b0 ^((~b1)& b2 ); + a01 = b1 ^((~b2)& b3 ); + a22 = b2 ^((~b3)& b4 ); + a43 = b3 ^((~b4)& b0 ); + a14 = b4 ^((~b0)& b1 ); + + b4 = ROL64((a10^d0), 18); + b0 = ROL64((a31^d1), 1); + b1 = ROL64((a02^d2), 6); + b2 = ROL64((a23^d3), 25); + b3 = ROL64((a44^d4), 8); + a10 = b0 ^((~b1)& b2 ); + a31 = b1 ^((~b2)& b3 ); + a02 = b2 ^((~b3)& b4 ); + a23 = b3 ^((~b4)& b0 ); + a44 = b4 ^((~b0)& b1 ); + + b1 = ROL64((a40^d0), 36); + b2 = ROL64((a11^d1), 10); + b3 = ROL64((a32^d2), 15); + b4 = ROL64((a03^d3), 56); + b0 = ROL64((a24^d4), 27); + a40 = b0 ^((~b1)& b2 ); + a11 = b1 ^((~b2)& b3 ); + a32 = b2 ^((~b3)& b4 ); + a03 = b3 ^((~b4)& b0 ); + a24 = b4 ^((~b0)& b1 ); + + b3 = ROL64((a20^d0), 41); + b4 = ROL64((a41^d1), 2); + b0 = ROL64((a12^d2), 62); + b1 = ROL64((a33^d3), 55); + b2 = ROL64((a04^d4), 39); + a20 = b0 ^((~b1)& b2 ); + a41 = b1 ^((~b2)& b3 ); + a12 = b2 ^((~b3)& b4 ); + a33 = b3 ^((~b4)& b0 ); + a04 = b4 ^((~b0)& b1 ); + + c0 = a00^a30^a10^a40^a20; + c1 = a21^a01^a31^a11^a41; + c2 = a42^a22^a02^a32^a12; + c3 = a13^a43^a23^a03^a33; + c4 = a34^a14^a44^a24^a04; + d0 = c4^ROL64(c1, 1); + d1 = c0^ROL64(c2, 1); + d2 = c1^ROL64(c3, 1); + d3 = c2^ROL64(c4, 1); + d4 = c3^ROL64(c0, 1); + + b0 = (a00^d0); + b1 = ROL64((a01^d1), 44); + b2 = ROL64((a02^d2), 43); + b3 = ROL64((a03^d3), 21); + b4 = ROL64((a04^d4), 14); + a00 = b0 ^((~b1)& b2 ); + a00 ^= RC[i+3]; + a01 = b1 ^((~b2)& b3 ); + a02 = b2 ^((~b3)& b4 ); + a03 = b3 ^((~b4)& b0 ); + a04 = b4 ^((~b0)& b1 ); + + b2 = ROL64((a10^d0), 3); + b3 = ROL64((a11^d1), 45); + b4 = ROL64((a12^d2), 61); + b0 = ROL64((a13^d3), 28); + b1 = ROL64((a14^d4), 20); + a10 = b0 ^((~b1)& b2 ); + a11 = b1 ^((~b2)& b3 ); + a12 = b2 ^((~b3)& b4 ); + a13 = b3 ^((~b4)& b0 ); + a14 = b4 ^((~b0)& b1 ); + + b4 = ROL64((a20^d0), 18); + b0 = ROL64((a21^d1), 1); + b1 = ROL64((a22^d2), 6); + b2 = ROL64((a23^d3), 25); + b3 = ROL64((a24^d4), 8); + a20 = b0 ^((~b1)& b2 ); + a21 = b1 ^((~b2)& b3 ); + a22 = b2 ^((~b3)& b4 ); + a23 = b3 ^((~b4)& b0 ); + a24 = b4 ^((~b0)& b1 ); + + b1 = ROL64((a30^d0), 36); + b2 = ROL64((a31^d1), 10); + b3 = ROL64((a32^d2), 15); + b4 = ROL64((a33^d3), 56); + b0 = ROL64((a34^d4), 27); + a30 = b0 ^((~b1)& b2 ); + a31 = b1 ^((~b2)& b3 ); + a32 = b2 ^((~b3)& b4 ); + a33 = b3 ^((~b4)& b0 ); + a34 = b4 ^((~b0)& b1 ); + + b3 = ROL64((a40^d0), 41); + b4 = ROL64((a41^d1), 2); + b0 = ROL64((a42^d2), 62); + b1 = ROL64((a43^d3), 55); + b2 = ROL64((a44^d4), 39); + a40 = b0 ^((~b1)& b2 ); + a41 = b1 ^((~b2)& b3 ); + a42 = b2 ^((~b3)& b4 ); + a43 = b3 ^((~b4)& b0 ); + a44 = b4 ^((~b0)& b1 ); + } +} + +/* +** Initialize a new hash. iSize determines the size of the hash +** in bits and should be one of 224, 256, 384, or 512. Or iSize +** can be zero to use the default hash size of 256 bits. +*/ +static void SHA3Init(SHA3Context *p, int iSize){ + memset(p, 0, sizeof(*p)); + if( iSize>=128 && iSize<=512 ){ + p->nRate = (1600 - ((iSize + 31)&~31)*2)/8; + }else{ + p->nRate = (1600 - 2*256)/8; + } +#if SHA3_BYTEORDER==1234 + /* Known to be little-endian at compile-time. No-op */ +#elif SHA3_BYTEORDER==4321 + p->ixMask = 7; /* Big-endian */ +#else + { + static unsigned int one = 1; + if( 1==*(unsigned char*)&one ){ + /* Little endian. No byte swapping. */ + p->ixMask = 0; + }else{ + /* Big endian. Byte swap. */ + p->ixMask = 7; + } + } +#endif +} + +/* +** Make consecutive calls to the SHA3Update function to add new content +** to the hash +*/ +static void SHA3Update( + SHA3Context *p, + const unsigned char *aData, + unsigned int nData +){ + unsigned int i = 0; +#if SHA3_BYTEORDER==1234 + if( (p->nLoaded % 8)==0 && ((aData - (const unsigned char*)0)&7)==0 ){ + for(; i+7u.s[p->nLoaded/8] ^= *(u64*)&aData[i]; + p->nLoaded += 8; + if( p->nLoaded>=p->nRate ){ + KeccakF1600Step(p); + p->nLoaded = 0; + } + } + } +#endif + for(; iu.x[p->nLoaded] ^= aData[i]; +#elif SHA3_BYTEORDER==4321 + p->u.x[p->nLoaded^0x07] ^= aData[i]; +#else + p->u.x[p->nLoaded^p->ixMask] ^= aData[i]; +#endif + p->nLoaded++; + if( p->nLoaded==p->nRate ){ + KeccakF1600Step(p); + p->nLoaded = 0; + } + } +} + +/* +** After all content has been added, invoke SHA3Final() to compute +** the final hash. The function returns a pointer to the binary +** hash value. +*/ +static unsigned char *SHA3Final(SHA3Context *p){ + unsigned int i; + if( p->nLoaded==p->nRate-1 ){ + const unsigned char c1 = 0x86; + SHA3Update(p, &c1, 1); + }else{ + const unsigned char c2 = 0x06; + const unsigned char c3 = 0x80; + SHA3Update(p, &c2, 1); + p->nLoaded = p->nRate - 1; + SHA3Update(p, &c3, 1); + } + for(i=0; inRate; i++){ + p->u.x[i+p->nRate] = p->u.x[i^p->ixMask]; + } + return &p->u.x[p->nRate]; +} +/* End of the hashing logic +*****************************************************************************/ + +/* +** Implementation of the sha3(X,SIZE) function. +** +** Return a BLOB which is the SIZE-bit SHA3 hash of X. The default +** size is 256. If X is a BLOB, it is hashed as is. +** For all other non-NULL types of input, X is converted into a UTF-8 string +** and the string is hashed without the trailing 0x00 terminator. The hash +** of a NULL value is NULL. +*/ +static void sha3Func( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + SHA3Context cx; + int eType = sqlite3_value_type(argv[0]); + int nByte = sqlite3_value_bytes(argv[0]); + int iSize; + if( argc==1 ){ + iSize = 256; + }else{ + iSize = sqlite3_value_int(argv[1]); + if( iSize!=224 && iSize!=256 && iSize!=384 && iSize!=512 ){ + sqlite3_result_error(context, "SHA3 size should be one of: 224 256 " + "384 512", -1); + return; + } + } + if( eType==SQLITE_NULL ) return; + SHA3Init(&cx, iSize); + if( eType==SQLITE_BLOB ){ + SHA3Update(&cx, sqlite3_value_blob(argv[0]), nByte); + }else{ + SHA3Update(&cx, sqlite3_value_text(argv[0]), nByte); + } + sqlite3_result_blob(context, SHA3Final(&cx), iSize/8, SQLITE_TRANSIENT); +} + +/* Compute a string using sqlite3_vsnprintf() with a maximum length +** of 50 bytes and add it to the hash. +*/ +static void hash_step_vformat( + SHA3Context *p, /* Add content to this context */ + const char *zFormat, + ... +){ + va_list ap; + int n; + char zBuf[50]; + va_start(ap, zFormat); + sqlite3_vsnprintf(sizeof(zBuf),zBuf,zFormat,ap); + va_end(ap); + n = (int)strlen(zBuf); + SHA3Update(p, (unsigned char*)zBuf, n); +} + +/* +** Implementation of the sha3_query(SQL,SIZE) function. +** +** This function compiles and runs the SQL statement(s) given in the +** argument. The results are hashed using a SIZE-bit SHA3. The default +** size is 256. +** +** The format of the byte stream that is hashed is summarized as follows: +** +** S: +** R +** N +** I +** F +** B: +** T: +** +** is the original SQL text for each statement run and is +** the size of that text. The SQL text is UTF-8. A single R character +** occurs before the start of each row. N means a NULL value. +** I mean an 8-byte little-endian integer . F is a floating point +** number with an 8-byte little-endian IEEE floating point value . +** B means blobs of bytes. T means text rendered as +** bytes of UTF-8. The and values are expressed as an ASCII +** text integers. +** +** For each SQL statement in the X input, there is one S segment. Each +** S segment is followed by zero or more R segments, one for each row in the +** result set. After each R, there are one or more N, I, F, B, or T segments, +** one for each column in the result set. Segments are concatentated directly +** with no delimiters of any kind. +*/ +static void sha3QueryFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + sqlite3 *db = sqlite3_context_db_handle(context); + const char *zSql = (const char*)sqlite3_value_text(argv[0]); + sqlite3_stmt *pStmt = 0; + int nCol; /* Number of columns in the result set */ + int i; /* Loop counter */ + int rc; + int n; + const char *z; + SHA3Context cx; + int iSize; + + if( argc==1 ){ + iSize = 256; + }else{ + iSize = sqlite3_value_int(argv[1]); + if( iSize!=224 && iSize!=256 && iSize!=384 && iSize!=512 ){ + sqlite3_result_error(context, "SHA3 size should be one of: 224 256 " + "384 512", -1); + return; + } + } + if( zSql==0 ) return; + SHA3Init(&cx, iSize); + while( zSql[0] ){ + rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, &zSql); + if( rc ){ + char *zMsg = sqlite3_mprintf("error SQL statement [%s]: %s", + zSql, sqlite3_errmsg(db)); + sqlite3_finalize(pStmt); + sqlite3_result_error(context, zMsg, -1); + sqlite3_free(zMsg); + return; + } + if( !sqlite3_stmt_readonly(pStmt) ){ + char *zMsg = sqlite3_mprintf("non-query: [%s]", sqlite3_sql(pStmt)); + sqlite3_finalize(pStmt); + sqlite3_result_error(context, zMsg, -1); + sqlite3_free(zMsg); + return; + } + nCol = sqlite3_column_count(pStmt); + z = sqlite3_sql(pStmt); + if( z ){ + n = (int)strlen(z); + hash_step_vformat(&cx,"S%d:",n); + SHA3Update(&cx,(unsigned char*)z,n); + } + + /* Compute a hash over the result of the query */ + while( SQLITE_ROW==sqlite3_step(pStmt) ){ + SHA3Update(&cx,(const unsigned char*)"R",1); + for(i=0; i=1; j--){ + x[j] = u & 0xff; + u >>= 8; + } + x[0] = 'I'; + SHA3Update(&cx, x, 9); + break; + } + case SQLITE_FLOAT: { + sqlite3_uint64 u; + int j; + unsigned char x[9]; + double r = sqlite3_column_double(pStmt,i); + memcpy(&u, &r, 8); + for(j=8; j>=1; j--){ + x[j] = u & 0xff; + u >>= 8; + } + x[0] = 'F'; + SHA3Update(&cx,x,9); + break; + } + case SQLITE_TEXT: { + int n2 = sqlite3_column_bytes(pStmt, i); + const unsigned char *z2 = sqlite3_column_text(pStmt, i); + hash_step_vformat(&cx,"T%d:",n2); + SHA3Update(&cx, z2, n2); + break; + } + case SQLITE_BLOB: { + int n2 = sqlite3_column_bytes(pStmt, i); + const unsigned char *z2 = sqlite3_column_blob(pStmt, i); + hash_step_vformat(&cx,"B%d:",n2); + SHA3Update(&cx, z2, n2); + break; + } + } + } + } + sqlite3_finalize(pStmt); + } + sqlite3_result_blob(context, SHA3Final(&cx), iSize/8, SQLITE_TRANSIENT); +} + + +#ifdef _WIN32 + +#endif +int sqlite3_shathree_init( + sqlite3 *db, + char **pzErrMsg, + const sqlite3_api_routines *pApi +){ + int rc = SQLITE_OK; + SQLITE_EXTENSION_INIT2(pApi); + (void)pzErrMsg; /* Unused parameter */ + rc = sqlite3_create_function(db, "sha3", 1, + SQLITE_UTF8 | SQLITE_INNOCUOUS | SQLITE_DETERMINISTIC, + 0, sha3Func, 0, 0); + if( rc==SQLITE_OK ){ + rc = sqlite3_create_function(db, "sha3", 2, + SQLITE_UTF8 | SQLITE_INNOCUOUS | SQLITE_DETERMINISTIC, + 0, sha3Func, 0, 0); + } + if( rc==SQLITE_OK ){ + rc = sqlite3_create_function(db, "sha3_query", 1, + SQLITE_UTF8 | SQLITE_DIRECTONLY, + 0, sha3QueryFunc, 0, 0); + } + if( rc==SQLITE_OK ){ + rc = sqlite3_create_function(db, "sha3_query", 2, + SQLITE_UTF8 | SQLITE_DIRECTONLY, + 0, sha3QueryFunc, 0, 0); + } + return rc; +} + +/************************* End ../ext/misc/shathree.c ********************/ +/************************* Begin ../ext/misc/fileio.c ******************/ +/* +** 2014-06-13 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This SQLite extension implements SQL functions readfile() and +** writefile(), and eponymous virtual type "fsdir". +** +** WRITEFILE(FILE, DATA [, MODE [, MTIME]]): +** +** If neither of the optional arguments is present, then this UDF +** function writes blob DATA to file FILE. If successful, the number +** of bytes written is returned. If an error occurs, NULL is returned. +** +** If the first option argument - MODE - is present, then it must +** be passed an integer value that corresponds to a POSIX mode +** value (file type + permissions, as returned in the stat.st_mode +** field by the stat() system call). Three types of files may +** be written/created: +** +** regular files: (mode & 0170000)==0100000 +** symbolic links: (mode & 0170000)==0120000 +** directories: (mode & 0170000)==0040000 +** +** For a directory, the DATA is ignored. For a symbolic link, it is +** interpreted as text and used as the target of the link. For a +** regular file, it is interpreted as a blob and written into the +** named file. Regardless of the type of file, its permissions are +** set to (mode & 0777) before returning. +** +** If the optional MTIME argument is present, then it is interpreted +** as an integer - the number of seconds since the unix epoch. The +** modification-time of the target file is set to this value before +** returning. +** +** If three or more arguments are passed to this function and an +** error is encountered, an exception is raised. +** +** READFILE(FILE): +** +** Read and return the contents of file FILE (type blob) from disk. +** +** FSDIR: +** +** Used as follows: +** +** SELECT * FROM fsdir($path [, $dir]); +** +** Parameter $path is an absolute or relative pathname. If the file that it +** refers to does not exist, it is an error. If the path refers to a regular +** file or symbolic link, it returns a single row. Or, if the path refers +** to a directory, it returns one row for the directory, and one row for each +** file within the hierarchy rooted at $path. +** +** Each row has the following columns: +** +** name: Path to file or directory (text value). +** mode: Value of stat.st_mode for directory entry (an integer). +** mtime: Value of stat.st_mtime for directory entry (an integer). +** data: For a regular file, a blob containing the file data. For a +** symlink, a text value containing the text of the link. For a +** directory, NULL. +** +** If a non-NULL value is specified for the optional $dir parameter and +** $path is a relative path, then $path is interpreted relative to $dir. +** And the paths returned in the "name" column of the table are also +** relative to directory $dir. +** +** Notes on building this extension for Windows: +** Unless linked statically with the SQLite library, a preprocessor +** symbol, FILEIO_WIN32_DLL, must be #define'd to create a stand-alone +** DLL form of this extension for WIN32. See its use below for details. +*/ +/* #include "sqlite3ext.h" */ +SQLITE_EXTENSION_INIT1 +#include +#include +#include + +#include +#include +#include +#if !defined(_WIN32) && !defined(WIN32) +# include +# include +# include +# include +#else +# include "windows.h" +# include +# include +/* # include "test_windirent.h" */ +# define dirent DIRENT +# ifndef chmod +# define chmod _chmod +# endif +# ifndef stat +# define stat _stat +# endif +# define mkdir(path,mode) _mkdir(path) +# define lstat(path,buf) stat(path,buf) +#endif +#include +#include + + +/* +** Structure of the fsdir() table-valued function +*/ + /* 0 1 2 3 4 5 */ +#define FSDIR_SCHEMA "(name,mode,mtime,data,path HIDDEN,dir HIDDEN)" +#define FSDIR_COLUMN_NAME 0 /* Name of the file */ +#define FSDIR_COLUMN_MODE 1 /* Access mode */ +#define FSDIR_COLUMN_MTIME 2 /* Last modification time */ +#define FSDIR_COLUMN_DATA 3 /* File content */ +#define FSDIR_COLUMN_PATH 4 /* Path to top of search */ +#define FSDIR_COLUMN_DIR 5 /* Path is relative to this directory */ + + +/* +** Set the result stored by context ctx to a blob containing the +** contents of file zName. Or, leave the result unchanged (NULL) +** if the file does not exist or is unreadable. +** +** If the file exceeds the SQLite blob size limit, through an +** SQLITE_TOOBIG error. +** +** Throw an SQLITE_IOERR if there are difficulties pulling the file +** off of disk. +*/ +static void readFileContents(sqlite3_context *ctx, const char *zName){ + FILE *in; + sqlite3_int64 nIn; + void *pBuf; + sqlite3 *db; + int mxBlob; + + in = fopen(zName, "rb"); + if( in==0 ){ + /* File does not exist or is unreadable. Leave the result set to NULL. */ + return; + } + fseek(in, 0, SEEK_END); + nIn = ftell(in); + rewind(in); + db = sqlite3_context_db_handle(ctx); + mxBlob = sqlite3_limit(db, SQLITE_LIMIT_LENGTH, -1); + if( nIn>mxBlob ){ + sqlite3_result_error_code(ctx, SQLITE_TOOBIG); + fclose(in); + return; + } + pBuf = sqlite3_malloc64( nIn ? nIn : 1 ); + if( pBuf==0 ){ + sqlite3_result_error_nomem(ctx); + fclose(in); + return; + } + if( nIn==(sqlite3_int64)fread(pBuf, 1, (size_t)nIn, in) ){ + sqlite3_result_blob64(ctx, pBuf, nIn, sqlite3_free); + }else{ + sqlite3_result_error_code(ctx, SQLITE_IOERR); + sqlite3_free(pBuf); + } + fclose(in); +} + +/* +** Implementation of the "readfile(X)" SQL function. The entire content +** of the file named X is read and returned as a BLOB. NULL is returned +** if the file does not exist or is unreadable. +*/ +static void readfileFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + const char *zName; + (void)(argc); /* Unused parameter */ + zName = (const char*)sqlite3_value_text(argv[0]); + if( zName==0 ) return; + readFileContents(context, zName); +} + +/* +** Set the error message contained in context ctx to the results of +** vprintf(zFmt, ...). +*/ +static void ctxErrorMsg(sqlite3_context *ctx, const char *zFmt, ...){ + char *zMsg = 0; + va_list ap; + va_start(ap, zFmt); + zMsg = sqlite3_vmprintf(zFmt, ap); + sqlite3_result_error(ctx, zMsg, -1); + sqlite3_free(zMsg); + va_end(ap); +} + +#if defined(_WIN32) +/* +** This function is designed to convert a Win32 FILETIME structure into the +** number of seconds since the Unix Epoch (1970-01-01 00:00:00 UTC). +*/ +static sqlite3_uint64 fileTimeToUnixTime( + LPFILETIME pFileTime +){ + SYSTEMTIME epochSystemTime; + ULARGE_INTEGER epochIntervals; + FILETIME epochFileTime; + ULARGE_INTEGER fileIntervals; + + memset(&epochSystemTime, 0, sizeof(SYSTEMTIME)); + epochSystemTime.wYear = 1970; + epochSystemTime.wMonth = 1; + epochSystemTime.wDay = 1; + SystemTimeToFileTime(&epochSystemTime, &epochFileTime); + epochIntervals.LowPart = epochFileTime.dwLowDateTime; + epochIntervals.HighPart = epochFileTime.dwHighDateTime; + + fileIntervals.LowPart = pFileTime->dwLowDateTime; + fileIntervals.HighPart = pFileTime->dwHighDateTime; + + return (fileIntervals.QuadPart - epochIntervals.QuadPart) / 10000000; +} + + +#if defined(FILEIO_WIN32_DLL) && (defined(_WIN32) || defined(WIN32)) +# /* To allow a standalone DLL, use this next replacement function: */ +# undef sqlite3_win32_utf8_to_unicode +# define sqlite3_win32_utf8_to_unicode utf8_to_utf16 +# +LPWSTR utf8_to_utf16(const char *z){ + int nAllot = MultiByteToWideChar(CP_UTF8, 0, z, -1, NULL, 0); + LPWSTR rv = sqlite3_malloc(nAllot * sizeof(WCHAR)); + if( rv!=0 && 0 < MultiByteToWideChar(CP_UTF8, 0, z, -1, rv, nAllot) ) + return rv; + sqlite3_free(rv); + return 0; +} +#endif + +/* +** This function attempts to normalize the time values found in the stat() +** buffer to UTC. This is necessary on Win32, where the runtime library +** appears to return these values as local times. +*/ +static void statTimesToUtc( + const char *zPath, + struct stat *pStatBuf +){ + HANDLE hFindFile; + WIN32_FIND_DATAW fd; + LPWSTR zUnicodeName; + extern LPWSTR sqlite3_win32_utf8_to_unicode(const char*); + zUnicodeName = sqlite3_win32_utf8_to_unicode(zPath); + if( zUnicodeName ){ + memset(&fd, 0, sizeof(WIN32_FIND_DATAW)); + hFindFile = FindFirstFileW(zUnicodeName, &fd); + if( hFindFile!=NULL ){ + pStatBuf->st_ctime = (time_t)fileTimeToUnixTime(&fd.ftCreationTime); + pStatBuf->st_atime = (time_t)fileTimeToUnixTime(&fd.ftLastAccessTime); + pStatBuf->st_mtime = (time_t)fileTimeToUnixTime(&fd.ftLastWriteTime); + FindClose(hFindFile); + } + sqlite3_free(zUnicodeName); + } +} +#endif + +/* +** This function is used in place of stat(). On Windows, special handling +** is required in order for the included time to be returned as UTC. On all +** other systems, this function simply calls stat(). +*/ +static int fileStat( + const char *zPath, + struct stat *pStatBuf +){ +#if defined(_WIN32) + int rc = stat(zPath, pStatBuf); + if( rc==0 ) statTimesToUtc(zPath, pStatBuf); + return rc; +#else + return stat(zPath, pStatBuf); +#endif +} + +/* +** This function is used in place of lstat(). On Windows, special handling +** is required in order for the included time to be returned as UTC. On all +** other systems, this function simply calls lstat(). +*/ +static int fileLinkStat( + const char *zPath, + struct stat *pStatBuf +){ +#if defined(_WIN32) + int rc = lstat(zPath, pStatBuf); + if( rc==0 ) statTimesToUtc(zPath, pStatBuf); + return rc; +#else + return lstat(zPath, pStatBuf); +#endif +} + +/* +** Argument zFile is the name of a file that will be created and/or written +** by SQL function writefile(). This function ensures that the directory +** zFile will be written to exists, creating it if required. The permissions +** for any path components created by this function are set in accordance +** with the current umask. +** +** If an OOM condition is encountered, SQLITE_NOMEM is returned. Otherwise, +** SQLITE_OK is returned if the directory is successfully created, or +** SQLITE_ERROR otherwise. +*/ +static int makeDirectory( + const char *zFile +){ + char *zCopy = sqlite3_mprintf("%s", zFile); + int rc = SQLITE_OK; + + if( zCopy==0 ){ + rc = SQLITE_NOMEM; + }else{ + int nCopy = (int)strlen(zCopy); + int i = 1; + + while( rc==SQLITE_OK ){ + struct stat sStat; + int rc2; + + for(; zCopy[i]!='/' && i=0 ){ +#if defined(_WIN32) +#if !SQLITE_OS_WINRT + /* Windows */ + FILETIME lastAccess; + FILETIME lastWrite; + SYSTEMTIME currentTime; + LONGLONG intervals; + HANDLE hFile; + LPWSTR zUnicodeName; + extern LPWSTR sqlite3_win32_utf8_to_unicode(const char*); + + GetSystemTime(¤tTime); + SystemTimeToFileTime(¤tTime, &lastAccess); + intervals = Int32x32To64(mtime, 10000000) + 116444736000000000; + lastWrite.dwLowDateTime = (DWORD)intervals; + lastWrite.dwHighDateTime = intervals >> 32; + zUnicodeName = sqlite3_win32_utf8_to_unicode(zFile); + if( zUnicodeName==0 ){ + return 1; + } + hFile = CreateFileW( + zUnicodeName, FILE_WRITE_ATTRIBUTES, 0, NULL, OPEN_EXISTING, + FILE_FLAG_BACKUP_SEMANTICS, NULL + ); + sqlite3_free(zUnicodeName); + if( hFile!=INVALID_HANDLE_VALUE ){ + BOOL bResult = SetFileTime(hFile, NULL, &lastAccess, &lastWrite); + CloseHandle(hFile); + return !bResult; + }else{ + return 1; + } +#endif +#elif defined(AT_FDCWD) && 0 /* utimensat() is not universally available */ + /* Recent unix */ + struct timespec times[2]; + times[0].tv_nsec = times[1].tv_nsec = 0; + times[0].tv_sec = time(0); + times[1].tv_sec = mtime; + if( utimensat(AT_FDCWD, zFile, times, AT_SYMLINK_NOFOLLOW) ){ + return 1; + } +#else + /* Legacy unix */ + struct timeval times[2]; + times[0].tv_usec = times[1].tv_usec = 0; + times[0].tv_sec = time(0); + times[1].tv_sec = mtime; + if( utimes(zFile, times) ){ + return 1; + } +#endif + } + + return 0; +} + +/* +** Implementation of the "writefile(W,X[,Y[,Z]]])" SQL function. +** Refer to header comments at the top of this file for details. +*/ +static void writefileFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + const char *zFile; + mode_t mode = 0; + int res; + sqlite3_int64 mtime = -1; + + if( argc<2 || argc>4 ){ + sqlite3_result_error(context, + "wrong number of arguments to function writefile()", -1 + ); + return; + } + + zFile = (const char*)sqlite3_value_text(argv[0]); + if( zFile==0 ) return; + if( argc>=3 ){ + mode = (mode_t)sqlite3_value_int(argv[2]); + } + if( argc==4 ){ + mtime = sqlite3_value_int64(argv[3]); + } + + res = writeFile(context, zFile, argv[1], mode, mtime); + if( res==1 && errno==ENOENT ){ + if( makeDirectory(zFile)==SQLITE_OK ){ + res = writeFile(context, zFile, argv[1], mode, mtime); + } + } + + if( argc>2 && res!=0 ){ + if( S_ISLNK(mode) ){ + ctxErrorMsg(context, "failed to create symlink: %s", zFile); + }else if( S_ISDIR(mode) ){ + ctxErrorMsg(context, "failed to create directory: %s", zFile); + }else{ + ctxErrorMsg(context, "failed to write file: %s", zFile); + } + } +} + +/* +** SQL function: lsmode(MODE) +** +** Given a numberic st_mode from stat(), convert it into a human-readable +** text string in the style of "ls -l". +*/ +static void lsModeFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + int i; + int iMode = sqlite3_value_int(argv[0]); + char z[16]; + (void)argc; + if( S_ISLNK(iMode) ){ + z[0] = 'l'; + }else if( S_ISREG(iMode) ){ + z[0] = '-'; + }else if( S_ISDIR(iMode) ){ + z[0] = 'd'; + }else{ + z[0] = '?'; + } + for(i=0; i<3; i++){ + int m = (iMode >> ((2-i)*3)); + char *a = &z[1 + i*3]; + a[0] = (m & 0x4) ? 'r' : '-'; + a[1] = (m & 0x2) ? 'w' : '-'; + a[2] = (m & 0x1) ? 'x' : '-'; + } + z[10] = '\0'; + sqlite3_result_text(context, z, -1, SQLITE_TRANSIENT); +} + +#ifndef SQLITE_OMIT_VIRTUALTABLE + +/* +** Cursor type for recursively iterating through a directory structure. +*/ +typedef struct fsdir_cursor fsdir_cursor; +typedef struct FsdirLevel FsdirLevel; + +struct FsdirLevel { + DIR *pDir; /* From opendir() */ + char *zDir; /* Name of directory (nul-terminated) */ +}; + +struct fsdir_cursor { + sqlite3_vtab_cursor base; /* Base class - must be first */ + + int nLvl; /* Number of entries in aLvl[] array */ + int iLvl; /* Index of current entry */ + FsdirLevel *aLvl; /* Hierarchy of directories being traversed */ + + const char *zBase; + int nBase; + + struct stat sStat; /* Current lstat() results */ + char *zPath; /* Path to current entry */ + sqlite3_int64 iRowid; /* Current rowid */ +}; + +typedef struct fsdir_tab fsdir_tab; +struct fsdir_tab { + sqlite3_vtab base; /* Base class - must be first */ +}; + +/* +** Construct a new fsdir virtual table object. +*/ +static int fsdirConnect( + sqlite3 *db, + void *pAux, + int argc, const char *const*argv, + sqlite3_vtab **ppVtab, + char **pzErr +){ + fsdir_tab *pNew = 0; + int rc; + (void)pAux; + (void)argc; + (void)argv; + (void)pzErr; + rc = sqlite3_declare_vtab(db, "CREATE TABLE x" FSDIR_SCHEMA); + if( rc==SQLITE_OK ){ + pNew = (fsdir_tab*)sqlite3_malloc( sizeof(*pNew) ); + if( pNew==0 ) return SQLITE_NOMEM; + memset(pNew, 0, sizeof(*pNew)); + sqlite3_vtab_config(db, SQLITE_VTAB_DIRECTONLY); + } + *ppVtab = (sqlite3_vtab*)pNew; + return rc; +} + +/* +** This method is the destructor for fsdir vtab objects. +*/ +static int fsdirDisconnect(sqlite3_vtab *pVtab){ + sqlite3_free(pVtab); + return SQLITE_OK; +} + +/* +** Constructor for a new fsdir_cursor object. +*/ +static int fsdirOpen(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCursor){ + fsdir_cursor *pCur; + (void)p; + pCur = sqlite3_malloc( sizeof(*pCur) ); + if( pCur==0 ) return SQLITE_NOMEM; + memset(pCur, 0, sizeof(*pCur)); + pCur->iLvl = -1; + *ppCursor = &pCur->base; + return SQLITE_OK; +} + +/* +** Reset a cursor back to the state it was in when first returned +** by fsdirOpen(). +*/ +static void fsdirResetCursor(fsdir_cursor *pCur){ + int i; + for(i=0; i<=pCur->iLvl; i++){ + FsdirLevel *pLvl = &pCur->aLvl[i]; + if( pLvl->pDir ) closedir(pLvl->pDir); + sqlite3_free(pLvl->zDir); + } + sqlite3_free(pCur->zPath); + sqlite3_free(pCur->aLvl); + pCur->aLvl = 0; + pCur->zPath = 0; + pCur->zBase = 0; + pCur->nBase = 0; + pCur->nLvl = 0; + pCur->iLvl = -1; + pCur->iRowid = 1; +} + +/* +** Destructor for an fsdir_cursor. +*/ +static int fsdirClose(sqlite3_vtab_cursor *cur){ + fsdir_cursor *pCur = (fsdir_cursor*)cur; + + fsdirResetCursor(pCur); + sqlite3_free(pCur); + return SQLITE_OK; +} + +/* +** Set the error message for the virtual table associated with cursor +** pCur to the results of vprintf(zFmt, ...). +*/ +static void fsdirSetErrmsg(fsdir_cursor *pCur, const char *zFmt, ...){ + va_list ap; + va_start(ap, zFmt); + pCur->base.pVtab->zErrMsg = sqlite3_vmprintf(zFmt, ap); + va_end(ap); +} + + +/* +** Advance an fsdir_cursor to its next row of output. +*/ +static int fsdirNext(sqlite3_vtab_cursor *cur){ + fsdir_cursor *pCur = (fsdir_cursor*)cur; + mode_t m = pCur->sStat.st_mode; + + pCur->iRowid++; + if( S_ISDIR(m) ){ + /* Descend into this directory */ + int iNew = pCur->iLvl + 1; + FsdirLevel *pLvl; + if( iNew>=pCur->nLvl ){ + int nNew = iNew+1; + sqlite3_int64 nByte = nNew*sizeof(FsdirLevel); + FsdirLevel *aNew = (FsdirLevel*)sqlite3_realloc64(pCur->aLvl, nByte); + if( aNew==0 ) return SQLITE_NOMEM; + memset(&aNew[pCur->nLvl], 0, sizeof(FsdirLevel)*(nNew-pCur->nLvl)); + pCur->aLvl = aNew; + pCur->nLvl = nNew; + } + pCur->iLvl = iNew; + pLvl = &pCur->aLvl[iNew]; + + pLvl->zDir = pCur->zPath; + pCur->zPath = 0; + pLvl->pDir = opendir(pLvl->zDir); + if( pLvl->pDir==0 ){ + fsdirSetErrmsg(pCur, "cannot read directory: %s", pCur->zPath); + return SQLITE_ERROR; + } + } + + while( pCur->iLvl>=0 ){ + FsdirLevel *pLvl = &pCur->aLvl[pCur->iLvl]; + struct dirent *pEntry = readdir(pLvl->pDir); + if( pEntry ){ + if( pEntry->d_name[0]=='.' ){ + if( pEntry->d_name[1]=='.' && pEntry->d_name[2]=='\0' ) continue; + if( pEntry->d_name[1]=='\0' ) continue; + } + sqlite3_free(pCur->zPath); + pCur->zPath = sqlite3_mprintf("%s/%s", pLvl->zDir, pEntry->d_name); + if( pCur->zPath==0 ) return SQLITE_NOMEM; + if( fileLinkStat(pCur->zPath, &pCur->sStat) ){ + fsdirSetErrmsg(pCur, "cannot stat file: %s", pCur->zPath); + return SQLITE_ERROR; + } + return SQLITE_OK; + } + closedir(pLvl->pDir); + sqlite3_free(pLvl->zDir); + pLvl->pDir = 0; + pLvl->zDir = 0; + pCur->iLvl--; + } + + /* EOF */ + sqlite3_free(pCur->zPath); + pCur->zPath = 0; + return SQLITE_OK; +} + +/* +** Return values of columns for the row at which the series_cursor +** is currently pointing. +*/ +static int fsdirColumn( + sqlite3_vtab_cursor *cur, /* The cursor */ + sqlite3_context *ctx, /* First argument to sqlite3_result_...() */ + int i /* Which column to return */ +){ + fsdir_cursor *pCur = (fsdir_cursor*)cur; + switch( i ){ + case FSDIR_COLUMN_NAME: { + sqlite3_result_text(ctx, &pCur->zPath[pCur->nBase], -1, SQLITE_TRANSIENT); + break; + } + + case FSDIR_COLUMN_MODE: + sqlite3_result_int64(ctx, pCur->sStat.st_mode); + break; + + case FSDIR_COLUMN_MTIME: + sqlite3_result_int64(ctx, pCur->sStat.st_mtime); + break; + + case FSDIR_COLUMN_DATA: { + mode_t m = pCur->sStat.st_mode; + if( S_ISDIR(m) ){ + sqlite3_result_null(ctx); +#if !defined(_WIN32) && !defined(WIN32) + }else if( S_ISLNK(m) ){ + char aStatic[64]; + char *aBuf = aStatic; + sqlite3_int64 nBuf = 64; + int n; + + while( 1 ){ + n = readlink(pCur->zPath, aBuf, nBuf); + if( nzPath); + } + } + case FSDIR_COLUMN_PATH: + default: { + /* The FSDIR_COLUMN_PATH and FSDIR_COLUMN_DIR are input parameters. + ** always return their values as NULL */ + break; + } + } + return SQLITE_OK; +} + +/* +** Return the rowid for the current row. In this implementation, the +** first row returned is assigned rowid value 1, and each subsequent +** row a value 1 more than that of the previous. +*/ +static int fsdirRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){ + fsdir_cursor *pCur = (fsdir_cursor*)cur; + *pRowid = pCur->iRowid; + return SQLITE_OK; +} + +/* +** Return TRUE if the cursor has been moved off of the last +** row of output. +*/ +static int fsdirEof(sqlite3_vtab_cursor *cur){ + fsdir_cursor *pCur = (fsdir_cursor*)cur; + return (pCur->zPath==0); +} + +/* +** xFilter callback. +** +** idxNum==1 PATH parameter only +** idxNum==2 Both PATH and DIR supplied +*/ +static int fsdirFilter( + sqlite3_vtab_cursor *cur, + int idxNum, const char *idxStr, + int argc, sqlite3_value **argv +){ + const char *zDir = 0; + fsdir_cursor *pCur = (fsdir_cursor*)cur; + (void)idxStr; + fsdirResetCursor(pCur); + + if( idxNum==0 ){ + fsdirSetErrmsg(pCur, "table function fsdir requires an argument"); + return SQLITE_ERROR; + } + + assert( argc==idxNum && (argc==1 || argc==2) ); + zDir = (const char*)sqlite3_value_text(argv[0]); + if( zDir==0 ){ + fsdirSetErrmsg(pCur, "table function fsdir requires a non-NULL argument"); + return SQLITE_ERROR; + } + if( argc==2 ){ + pCur->zBase = (const char*)sqlite3_value_text(argv[1]); + } + if( pCur->zBase ){ + pCur->nBase = (int)strlen(pCur->zBase)+1; + pCur->zPath = sqlite3_mprintf("%s/%s", pCur->zBase, zDir); + }else{ + pCur->zPath = sqlite3_mprintf("%s", zDir); + } + + if( pCur->zPath==0 ){ + return SQLITE_NOMEM; + } + if( fileLinkStat(pCur->zPath, &pCur->sStat) ){ + fsdirSetErrmsg(pCur, "cannot stat file: %s", pCur->zPath); + return SQLITE_ERROR; + } + + return SQLITE_OK; +} + +/* +** SQLite will invoke this method one or more times while planning a query +** that uses the generate_series virtual table. This routine needs to create +** a query plan for each invocation and compute an estimated cost for that +** plan. +** +** In this implementation idxNum is used to represent the +** query plan. idxStr is unused. +** +** The query plan is represented by values of idxNum: +** +** (1) The path value is supplied by argv[0] +** (2) Path is in argv[0] and dir is in argv[1] +*/ +static int fsdirBestIndex( + sqlite3_vtab *tab, + sqlite3_index_info *pIdxInfo +){ + int i; /* Loop over constraints */ + int idxPath = -1; /* Index in pIdxInfo->aConstraint of PATH= */ + int idxDir = -1; /* Index in pIdxInfo->aConstraint of DIR= */ + int seenPath = 0; /* True if an unusable PATH= constraint is seen */ + int seenDir = 0; /* True if an unusable DIR= constraint is seen */ + const struct sqlite3_index_constraint *pConstraint; + + (void)tab; + pConstraint = pIdxInfo->aConstraint; + for(i=0; inConstraint; i++, pConstraint++){ + if( pConstraint->op!=SQLITE_INDEX_CONSTRAINT_EQ ) continue; + switch( pConstraint->iColumn ){ + case FSDIR_COLUMN_PATH: { + if( pConstraint->usable ){ + idxPath = i; + seenPath = 0; + }else if( idxPath<0 ){ + seenPath = 1; + } + break; + } + case FSDIR_COLUMN_DIR: { + if( pConstraint->usable ){ + idxDir = i; + seenDir = 0; + }else if( idxDir<0 ){ + seenDir = 1; + } + break; + } + } + } + if( seenPath || seenDir ){ + /* If input parameters are unusable, disallow this plan */ + return SQLITE_CONSTRAINT; + } + + if( idxPath<0 ){ + pIdxInfo->idxNum = 0; + /* The pIdxInfo->estimatedCost should have been initialized to a huge + ** number. Leave it unchanged. */ + pIdxInfo->estimatedRows = 0x7fffffff; + }else{ + pIdxInfo->aConstraintUsage[idxPath].omit = 1; + pIdxInfo->aConstraintUsage[idxPath].argvIndex = 1; + if( idxDir>=0 ){ + pIdxInfo->aConstraintUsage[idxDir].omit = 1; + pIdxInfo->aConstraintUsage[idxDir].argvIndex = 2; + pIdxInfo->idxNum = 2; + pIdxInfo->estimatedCost = 10.0; + }else{ + pIdxInfo->idxNum = 1; + pIdxInfo->estimatedCost = 100.0; + } + } + + return SQLITE_OK; +} + +/* +** Register the "fsdir" virtual table. +*/ +static int fsdirRegister(sqlite3 *db){ + static sqlite3_module fsdirModule = { + 0, /* iVersion */ + 0, /* xCreate */ + fsdirConnect, /* xConnect */ + fsdirBestIndex, /* xBestIndex */ + fsdirDisconnect, /* xDisconnect */ + 0, /* xDestroy */ + fsdirOpen, /* xOpen - open a cursor */ + fsdirClose, /* xClose - close a cursor */ + fsdirFilter, /* xFilter - configure scan constraints */ + fsdirNext, /* xNext - advance a cursor */ + fsdirEof, /* xEof - check for end of scan */ + fsdirColumn, /* xColumn - read data */ + fsdirRowid, /* xRowid - read data */ + 0, /* xUpdate */ + 0, /* xBegin */ + 0, /* xSync */ + 0, /* xCommit */ + 0, /* xRollback */ + 0, /* xFindMethod */ + 0, /* xRename */ + 0, /* xSavepoint */ + 0, /* xRelease */ + 0, /* xRollbackTo */ + 0, /* xShadowName */ + }; + + int rc = sqlite3_create_module(db, "fsdir", &fsdirModule, 0); + return rc; +} +#else /* SQLITE_OMIT_VIRTUALTABLE */ +# define fsdirRegister(x) SQLITE_OK +#endif + +#ifdef _WIN32 + +#endif +int sqlite3_fileio_init( + sqlite3 *db, + char **pzErrMsg, + const sqlite3_api_routines *pApi +){ + int rc = SQLITE_OK; + SQLITE_EXTENSION_INIT2(pApi); + (void)pzErrMsg; /* Unused parameter */ + rc = sqlite3_create_function(db, "readfile", 1, + SQLITE_UTF8|SQLITE_DIRECTONLY, 0, + readfileFunc, 0, 0); + if( rc==SQLITE_OK ){ + rc = sqlite3_create_function(db, "writefile", -1, + SQLITE_UTF8|SQLITE_DIRECTONLY, 0, + writefileFunc, 0, 0); + } + if( rc==SQLITE_OK ){ + rc = sqlite3_create_function(db, "lsmode", 1, SQLITE_UTF8, 0, + lsModeFunc, 0, 0); + } + if( rc==SQLITE_OK ){ + rc = fsdirRegister(db); + } + return rc; +} + +#if defined(FILEIO_WIN32_DLL) && (defined(_WIN32) || defined(WIN32)) +/* To allow a standalone DLL, make test_windirent.c use the same + * redefined SQLite API calls as the above extension code does. + * Just pull in this .c to accomplish this. As a beneficial side + * effect, this extension becomes a single translation unit. */ +# include "test_windirent.c" +#endif + +/************************* End ../ext/misc/fileio.c ********************/ +/************************* Begin ../ext/misc/completion.c ******************/ +/* +** 2017-07-10 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +************************************************************************* +** +** This file implements an eponymous virtual table that returns suggested +** completions for a partial SQL input. +** +** Suggested usage: +** +** SELECT DISTINCT candidate COLLATE nocase +** FROM completion($prefix,$wholeline) +** ORDER BY 1; +** +** The two query parameters are optional. $prefix is the text of the +** current word being typed and that is to be completed. $wholeline is +** the complete input line, used for context. +** +** The raw completion() table might return the same candidate multiple +** times, for example if the same column name is used to two or more +** tables. And the candidates are returned in an arbitrary order. Hence, +** the DISTINCT and ORDER BY are recommended. +** +** This virtual table operates at the speed of human typing, and so there +** is no attempt to make it fast. Even a slow implementation will be much +** faster than any human can type. +** +*/ +/* #include "sqlite3ext.h" */ +SQLITE_EXTENSION_INIT1 +#include +#include +#include + +#ifndef SQLITE_OMIT_VIRTUALTABLE + +/* completion_vtab is a subclass of sqlite3_vtab which will +** serve as the underlying representation of a completion virtual table +*/ +typedef struct completion_vtab completion_vtab; +struct completion_vtab { + sqlite3_vtab base; /* Base class - must be first */ + sqlite3 *db; /* Database connection for this completion vtab */ +}; + +/* completion_cursor is a subclass of sqlite3_vtab_cursor which will +** serve as the underlying representation of a cursor that scans +** over rows of the result +*/ +typedef struct completion_cursor completion_cursor; +struct completion_cursor { + sqlite3_vtab_cursor base; /* Base class - must be first */ + sqlite3 *db; /* Database connection for this cursor */ + int nPrefix, nLine; /* Number of bytes in zPrefix and zLine */ + char *zPrefix; /* The prefix for the word we want to complete */ + char *zLine; /* The whole that we want to complete */ + const char *zCurrentRow; /* Current output row */ + int szRow; /* Length of the zCurrentRow string */ + sqlite3_stmt *pStmt; /* Current statement */ + sqlite3_int64 iRowid; /* The rowid */ + int ePhase; /* Current phase */ + int j; /* inter-phase counter */ +}; + +/* Values for ePhase: +*/ +#define COMPLETION_FIRST_PHASE 1 +#define COMPLETION_KEYWORDS 1 +#define COMPLETION_PRAGMAS 2 +#define COMPLETION_FUNCTIONS 3 +#define COMPLETION_COLLATIONS 4 +#define COMPLETION_INDEXES 5 +#define COMPLETION_TRIGGERS 6 +#define COMPLETION_DATABASES 7 +#define COMPLETION_TABLES 8 /* Also VIEWs and TRIGGERs */ +#define COMPLETION_COLUMNS 9 +#define COMPLETION_MODULES 10 +#define COMPLETION_EOF 11 + +/* +** The completionConnect() method is invoked to create a new +** completion_vtab that describes the completion virtual table. +** +** Think of this routine as the constructor for completion_vtab objects. +** +** All this routine needs to do is: +** +** (1) Allocate the completion_vtab object and initialize all fields. +** +** (2) Tell SQLite (via the sqlite3_declare_vtab() interface) what the +** result set of queries against completion will look like. +*/ +static int completionConnect( + sqlite3 *db, + void *pAux, + int argc, const char *const*argv, + sqlite3_vtab **ppVtab, + char **pzErr +){ + completion_vtab *pNew; + int rc; + + (void)(pAux); /* Unused parameter */ + (void)(argc); /* Unused parameter */ + (void)(argv); /* Unused parameter */ + (void)(pzErr); /* Unused parameter */ + +/* Column numbers */ +#define COMPLETION_COLUMN_CANDIDATE 0 /* Suggested completion of the input */ +#define COMPLETION_COLUMN_PREFIX 1 /* Prefix of the word to be completed */ +#define COMPLETION_COLUMN_WHOLELINE 2 /* Entire line seen so far */ +#define COMPLETION_COLUMN_PHASE 3 /* ePhase - used for debugging only */ + + sqlite3_vtab_config(db, SQLITE_VTAB_INNOCUOUS); + rc = sqlite3_declare_vtab(db, + "CREATE TABLE x(" + " candidate TEXT," + " prefix TEXT HIDDEN," + " wholeline TEXT HIDDEN," + " phase INT HIDDEN" /* Used for debugging only */ + ")"); + if( rc==SQLITE_OK ){ + pNew = sqlite3_malloc( sizeof(*pNew) ); + *ppVtab = (sqlite3_vtab*)pNew; + if( pNew==0 ) return SQLITE_NOMEM; + memset(pNew, 0, sizeof(*pNew)); + pNew->db = db; + } + return rc; +} + +/* +** This method is the destructor for completion_cursor objects. +*/ +static int completionDisconnect(sqlite3_vtab *pVtab){ + sqlite3_free(pVtab); + return SQLITE_OK; +} + +/* +** Constructor for a new completion_cursor object. +*/ +static int completionOpen(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCursor){ + completion_cursor *pCur; + pCur = sqlite3_malloc( sizeof(*pCur) ); + if( pCur==0 ) return SQLITE_NOMEM; + memset(pCur, 0, sizeof(*pCur)); + pCur->db = ((completion_vtab*)p)->db; + *ppCursor = &pCur->base; + return SQLITE_OK; +} + +/* +** Reset the completion_cursor. +*/ +static void completionCursorReset(completion_cursor *pCur){ + sqlite3_free(pCur->zPrefix); pCur->zPrefix = 0; pCur->nPrefix = 0; + sqlite3_free(pCur->zLine); pCur->zLine = 0; pCur->nLine = 0; + sqlite3_finalize(pCur->pStmt); pCur->pStmt = 0; + pCur->j = 0; +} + +/* +** Destructor for a completion_cursor. +*/ +static int completionClose(sqlite3_vtab_cursor *cur){ + completionCursorReset((completion_cursor*)cur); + sqlite3_free(cur); + return SQLITE_OK; +} + +/* +** Advance a completion_cursor to its next row of output. +** +** The ->ePhase, ->j, and ->pStmt fields of the completion_cursor object +** record the current state of the scan. This routine sets ->zCurrentRow +** to the current row of output and then returns. If no more rows remain, +** then ->ePhase is set to COMPLETION_EOF which will signal the virtual +** table that has reached the end of its scan. +** +** The current implementation just lists potential identifiers and +** keywords and filters them by zPrefix. Future enhancements should +** take zLine into account to try to restrict the set of identifiers and +** keywords based on what would be legal at the current point of input. +*/ +static int completionNext(sqlite3_vtab_cursor *cur){ + completion_cursor *pCur = (completion_cursor*)cur; + int eNextPhase = 0; /* Next phase to try if current phase reaches end */ + int iCol = -1; /* If >=0, step pCur->pStmt and use the i-th column */ + pCur->iRowid++; + while( pCur->ePhase!=COMPLETION_EOF ){ + switch( pCur->ePhase ){ + case COMPLETION_KEYWORDS: { + if( pCur->j >= sqlite3_keyword_count() ){ + pCur->zCurrentRow = 0; + pCur->ePhase = COMPLETION_DATABASES; + }else{ + sqlite3_keyword_name(pCur->j++, &pCur->zCurrentRow, &pCur->szRow); + } + iCol = -1; + break; + } + case COMPLETION_DATABASES: { + if( pCur->pStmt==0 ){ + sqlite3_prepare_v2(pCur->db, "PRAGMA database_list", -1, + &pCur->pStmt, 0); + } + iCol = 1; + eNextPhase = COMPLETION_TABLES; + break; + } + case COMPLETION_TABLES: { + if( pCur->pStmt==0 ){ + sqlite3_stmt *pS2; + char *zSql = 0; + const char *zSep = ""; + sqlite3_prepare_v2(pCur->db, "PRAGMA database_list", -1, &pS2, 0); + while( sqlite3_step(pS2)==SQLITE_ROW ){ + const char *zDb = (const char*)sqlite3_column_text(pS2, 1); + zSql = sqlite3_mprintf( + "%z%s" + "SELECT name FROM \"%w\".sqlite_schema", + zSql, zSep, zDb + ); + if( zSql==0 ) return SQLITE_NOMEM; + zSep = " UNION "; + } + sqlite3_finalize(pS2); + sqlite3_prepare_v2(pCur->db, zSql, -1, &pCur->pStmt, 0); + sqlite3_free(zSql); + } + iCol = 0; + eNextPhase = COMPLETION_COLUMNS; + break; + } + case COMPLETION_COLUMNS: { + if( pCur->pStmt==0 ){ + sqlite3_stmt *pS2; + char *zSql = 0; + const char *zSep = ""; + sqlite3_prepare_v2(pCur->db, "PRAGMA database_list", -1, &pS2, 0); + while( sqlite3_step(pS2)==SQLITE_ROW ){ + const char *zDb = (const char*)sqlite3_column_text(pS2, 1); + zSql = sqlite3_mprintf( + "%z%s" + "SELECT pti.name FROM \"%w\".sqlite_schema AS sm" + " JOIN pragma_table_info(sm.name,%Q) AS pti" + " WHERE sm.type='table'", + zSql, zSep, zDb, zDb + ); + if( zSql==0 ) return SQLITE_NOMEM; + zSep = " UNION "; + } + sqlite3_finalize(pS2); + sqlite3_prepare_v2(pCur->db, zSql, -1, &pCur->pStmt, 0); + sqlite3_free(zSql); + } + iCol = 0; + eNextPhase = COMPLETION_EOF; + break; + } + } + if( iCol<0 ){ + /* This case is when the phase presets zCurrentRow */ + if( pCur->zCurrentRow==0 ) continue; + }else{ + if( sqlite3_step(pCur->pStmt)==SQLITE_ROW ){ + /* Extract the next row of content */ + pCur->zCurrentRow = (const char*)sqlite3_column_text(pCur->pStmt, iCol); + pCur->szRow = sqlite3_column_bytes(pCur->pStmt, iCol); + }else{ + /* When all rows are finished, advance to the next phase */ + sqlite3_finalize(pCur->pStmt); + pCur->pStmt = 0; + pCur->ePhase = eNextPhase; + continue; + } + } + if( pCur->nPrefix==0 ) break; + if( pCur->nPrefix<=pCur->szRow + && sqlite3_strnicmp(pCur->zPrefix, pCur->zCurrentRow, pCur->nPrefix)==0 + ){ + break; + } + } + + return SQLITE_OK; +} + +/* +** Return values of columns for the row at which the completion_cursor +** is currently pointing. +*/ +static int completionColumn( + sqlite3_vtab_cursor *cur, /* The cursor */ + sqlite3_context *ctx, /* First argument to sqlite3_result_...() */ + int i /* Which column to return */ +){ + completion_cursor *pCur = (completion_cursor*)cur; + switch( i ){ + case COMPLETION_COLUMN_CANDIDATE: { + sqlite3_result_text(ctx, pCur->zCurrentRow, pCur->szRow,SQLITE_TRANSIENT); + break; + } + case COMPLETION_COLUMN_PREFIX: { + sqlite3_result_text(ctx, pCur->zPrefix, -1, SQLITE_TRANSIENT); + break; + } + case COMPLETION_COLUMN_WHOLELINE: { + sqlite3_result_text(ctx, pCur->zLine, -1, SQLITE_TRANSIENT); + break; + } + case COMPLETION_COLUMN_PHASE: { + sqlite3_result_int(ctx, pCur->ePhase); + break; + } + } + return SQLITE_OK; +} + +/* +** Return the rowid for the current row. In this implementation, the +** rowid is the same as the output value. +*/ +static int completionRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){ + completion_cursor *pCur = (completion_cursor*)cur; + *pRowid = pCur->iRowid; + return SQLITE_OK; +} + +/* +** Return TRUE if the cursor has been moved off of the last +** row of output. +*/ +static int completionEof(sqlite3_vtab_cursor *cur){ + completion_cursor *pCur = (completion_cursor*)cur; + return pCur->ePhase >= COMPLETION_EOF; +} + +/* +** This method is called to "rewind" the completion_cursor object back +** to the first row of output. This method is always called at least +** once prior to any call to completionColumn() or completionRowid() or +** completionEof(). +*/ +static int completionFilter( + sqlite3_vtab_cursor *pVtabCursor, + int idxNum, const char *idxStr, + int argc, sqlite3_value **argv +){ + completion_cursor *pCur = (completion_cursor *)pVtabCursor; + int iArg = 0; + (void)(idxStr); /* Unused parameter */ + (void)(argc); /* Unused parameter */ + completionCursorReset(pCur); + if( idxNum & 1 ){ + pCur->nPrefix = sqlite3_value_bytes(argv[iArg]); + if( pCur->nPrefix>0 ){ + pCur->zPrefix = sqlite3_mprintf("%s", sqlite3_value_text(argv[iArg])); + if( pCur->zPrefix==0 ) return SQLITE_NOMEM; + } + iArg = 1; + } + if( idxNum & 2 ){ + pCur->nLine = sqlite3_value_bytes(argv[iArg]); + if( pCur->nLine>0 ){ + pCur->zLine = sqlite3_mprintf("%s", sqlite3_value_text(argv[iArg])); + if( pCur->zLine==0 ) return SQLITE_NOMEM; + } + } + if( pCur->zLine!=0 && pCur->zPrefix==0 ){ + int i = pCur->nLine; + while( i>0 && (isalnum(pCur->zLine[i-1]) || pCur->zLine[i-1]=='_') ){ + i--; + } + pCur->nPrefix = pCur->nLine - i; + if( pCur->nPrefix>0 ){ + pCur->zPrefix = sqlite3_mprintf("%.*s", pCur->nPrefix, pCur->zLine + i); + if( pCur->zPrefix==0 ) return SQLITE_NOMEM; + } + } + pCur->iRowid = 0; + pCur->ePhase = COMPLETION_FIRST_PHASE; + return completionNext(pVtabCursor); +} + +/* +** SQLite will invoke this method one or more times while planning a query +** that uses the completion virtual table. This routine needs to create +** a query plan for each invocation and compute an estimated cost for that +** plan. +** +** There are two hidden parameters that act as arguments to the table-valued +** function: "prefix" and "wholeline". Bit 0 of idxNum is set if "prefix" +** is available and bit 1 is set if "wholeline" is available. +*/ +static int completionBestIndex( + sqlite3_vtab *tab, + sqlite3_index_info *pIdxInfo +){ + int i; /* Loop over constraints */ + int idxNum = 0; /* The query plan bitmask */ + int prefixIdx = -1; /* Index of the start= constraint, or -1 if none */ + int wholelineIdx = -1; /* Index of the stop= constraint, or -1 if none */ + int nArg = 0; /* Number of arguments that completeFilter() expects */ + const struct sqlite3_index_constraint *pConstraint; + + (void)(tab); /* Unused parameter */ + pConstraint = pIdxInfo->aConstraint; + for(i=0; inConstraint; i++, pConstraint++){ + if( pConstraint->usable==0 ) continue; + if( pConstraint->op!=SQLITE_INDEX_CONSTRAINT_EQ ) continue; + switch( pConstraint->iColumn ){ + case COMPLETION_COLUMN_PREFIX: + prefixIdx = i; + idxNum |= 1; + break; + case COMPLETION_COLUMN_WHOLELINE: + wholelineIdx = i; + idxNum |= 2; + break; + } + } + if( prefixIdx>=0 ){ + pIdxInfo->aConstraintUsage[prefixIdx].argvIndex = ++nArg; + pIdxInfo->aConstraintUsage[prefixIdx].omit = 1; + } + if( wholelineIdx>=0 ){ + pIdxInfo->aConstraintUsage[wholelineIdx].argvIndex = ++nArg; + pIdxInfo->aConstraintUsage[wholelineIdx].omit = 1; + } + pIdxInfo->idxNum = idxNum; + pIdxInfo->estimatedCost = (double)5000 - 1000*nArg; + pIdxInfo->estimatedRows = 500 - 100*nArg; + return SQLITE_OK; +} + +/* +** This following structure defines all the methods for the +** completion virtual table. +*/ +static sqlite3_module completionModule = { + 0, /* iVersion */ + 0, /* xCreate */ + completionConnect, /* xConnect */ + completionBestIndex, /* xBestIndex */ + completionDisconnect, /* xDisconnect */ + 0, /* xDestroy */ + completionOpen, /* xOpen - open a cursor */ + completionClose, /* xClose - close a cursor */ + completionFilter, /* xFilter - configure scan constraints */ + completionNext, /* xNext - advance a cursor */ + completionEof, /* xEof - check for end of scan */ + completionColumn, /* xColumn - read data */ + completionRowid, /* xRowid - read data */ + 0, /* xUpdate */ + 0, /* xBegin */ + 0, /* xSync */ + 0, /* xCommit */ + 0, /* xRollback */ + 0, /* xFindMethod */ + 0, /* xRename */ + 0, /* xSavepoint */ + 0, /* xRelease */ + 0, /* xRollbackTo */ + 0 /* xShadowName */ +}; + +#endif /* SQLITE_OMIT_VIRTUALTABLE */ + +int sqlite3CompletionVtabInit(sqlite3 *db){ + int rc = SQLITE_OK; +#ifndef SQLITE_OMIT_VIRTUALTABLE + rc = sqlite3_create_module(db, "completion", &completionModule, 0); +#endif + return rc; +} + +#ifdef _WIN32 + +#endif +int sqlite3_completion_init( + sqlite3 *db, + char **pzErrMsg, + const sqlite3_api_routines *pApi +){ + int rc = SQLITE_OK; + SQLITE_EXTENSION_INIT2(pApi); + (void)(pzErrMsg); /* Unused parameter */ +#ifndef SQLITE_OMIT_VIRTUALTABLE + rc = sqlite3CompletionVtabInit(db); +#endif + return rc; +} + +/************************* End ../ext/misc/completion.c ********************/ +/************************* Begin ../ext/misc/appendvfs.c ******************/ +/* +** 2017-10-20 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This file implements a VFS shim that allows an SQLite database to be +** appended onto the end of some other file, such as an executable. +** +** A special record must appear at the end of the file that identifies the +** file as an appended database and provides the offset to the first page +** of the exposed content. (Or, it is the length of the content prefix.) +** For best performance page 1 should be located at a disk page boundary, +** though that is not required. +** +** When opening a database using this VFS, the connection might treat +** the file as an ordinary SQLite database, or it might treat it as a +** database appended onto some other file. The decision is made by +** applying the following rules in order: +** +** (1) An empty file is an ordinary database. +** +** (2) If the file ends with the appendvfs trailer string +** "Start-Of-SQLite3-NNNNNNNN" that file is an appended database. +** +** (3) If the file begins with the standard SQLite prefix string +** "SQLite format 3", that file is an ordinary database. +** +** (4) If none of the above apply and the SQLITE_OPEN_CREATE flag is +** set, then a new database is appended to the already existing file. +** +** (5) Otherwise, SQLITE_CANTOPEN is returned. +** +** To avoid unnecessary complications with the PENDING_BYTE, the size of +** the file containing the database is limited to 1GiB. (1073741824 bytes) +** This VFS will not read or write past the 1GiB mark. This restriction +** might be lifted in future versions. For now, if you need a larger +** database, then keep it in a separate file. +** +** If the file being opened is a plain database (not an appended one), then +** this shim is a pass-through into the default underlying VFS. (rule 3) +**/ +/* #include "sqlite3ext.h" */ +SQLITE_EXTENSION_INIT1 +#include +#include + +/* The append mark at the end of the database is: +** +** Start-Of-SQLite3-NNNNNNNN +** 123456789 123456789 12345 +** +** The NNNNNNNN represents a 64-bit big-endian unsigned integer which is +** the offset to page 1, and also the length of the prefix content. +*/ +#define APND_MARK_PREFIX "Start-Of-SQLite3-" +#define APND_MARK_PREFIX_SZ 17 +#define APND_MARK_FOS_SZ 8 +#define APND_MARK_SIZE (APND_MARK_PREFIX_SZ+APND_MARK_FOS_SZ) + +/* +** Maximum size of the combined prefix + database + append-mark. This +** must be less than 0x40000000 to avoid locking issues on Windows. +*/ +#define APND_MAX_SIZE (0x40000000) + +/* +** Try to align the database to an even multiple of APND_ROUNDUP bytes. +*/ +#ifndef APND_ROUNDUP +#define APND_ROUNDUP 4096 +#endif +#define APND_ALIGN_MASK ((sqlite3_int64)(APND_ROUNDUP-1)) +#define APND_START_ROUNDUP(fsz) (((fsz)+APND_ALIGN_MASK) & ~APND_ALIGN_MASK) + +/* +** Forward declaration of objects used by this utility +*/ +typedef struct sqlite3_vfs ApndVfs; +typedef struct ApndFile ApndFile; + +/* Access to a lower-level VFS that (might) implement dynamic loading, +** access to randomness, etc. +*/ +#define ORIGVFS(p) ((sqlite3_vfs*)((p)->pAppData)) +#define ORIGFILE(p) ((sqlite3_file*)(((ApndFile*)(p))+1)) + +/* An open appendvfs file +** +** An instance of this structure describes the appended database file. +** A separate sqlite3_file object is always appended. The appended +** sqlite3_file object (which can be accessed using ORIGFILE()) describes +** the entire file, including the prefix, the database, and the +** append-mark. +** +** The structure of an AppendVFS database is like this: +** +** +-------------+---------+----------+-------------+ +** | prefix-file | padding | database | append-mark | +** +-------------+---------+----------+-------------+ +** ^ ^ +** | | +** iPgOne iMark +** +** +** "prefix file" - file onto which the database has been appended. +** "padding" - zero or more bytes inserted so that "database" +** starts on an APND_ROUNDUP boundary +** "database" - The SQLite database file +** "append-mark" - The 25-byte "Start-Of-SQLite3-NNNNNNNN" that indicates +** the offset from the start of prefix-file to the start +** of "database". +** +** The size of the database is iMark - iPgOne. +** +** The NNNNNNNN in the "Start-Of-SQLite3-NNNNNNNN" suffix is the value +** of iPgOne stored as a big-ending 64-bit integer. +** +** iMark will be the size of the underlying file minus 25 (APND_MARKSIZE). +** Or, iMark is -1 to indicate that it has not yet been written. +*/ +struct ApndFile { + sqlite3_file base; /* Subclass. MUST BE FIRST! */ + sqlite3_int64 iPgOne; /* Offset to the start of the database */ + sqlite3_int64 iMark; /* Offset of the append mark. -1 if unwritten */ + /* Always followed by another sqlite3_file that describes the whole file */ +}; + +/* +** Methods for ApndFile +*/ +static int apndClose(sqlite3_file*); +static int apndRead(sqlite3_file*, void*, int iAmt, sqlite3_int64 iOfst); +static int apndWrite(sqlite3_file*,const void*,int iAmt, sqlite3_int64 iOfst); +static int apndTruncate(sqlite3_file*, sqlite3_int64 size); +static int apndSync(sqlite3_file*, int flags); +static int apndFileSize(sqlite3_file*, sqlite3_int64 *pSize); +static int apndLock(sqlite3_file*, int); +static int apndUnlock(sqlite3_file*, int); +static int apndCheckReservedLock(sqlite3_file*, int *pResOut); +static int apndFileControl(sqlite3_file*, int op, void *pArg); +static int apndSectorSize(sqlite3_file*); +static int apndDeviceCharacteristics(sqlite3_file*); +static int apndShmMap(sqlite3_file*, int iPg, int pgsz, int, void volatile**); +static int apndShmLock(sqlite3_file*, int offset, int n, int flags); +static void apndShmBarrier(sqlite3_file*); +static int apndShmUnmap(sqlite3_file*, int deleteFlag); +static int apndFetch(sqlite3_file*, sqlite3_int64 iOfst, int iAmt, void **pp); +static int apndUnfetch(sqlite3_file*, sqlite3_int64 iOfst, void *p); + +/* +** Methods for ApndVfs +*/ +static int apndOpen(sqlite3_vfs*, const char *, sqlite3_file*, int , int *); +static int apndDelete(sqlite3_vfs*, const char *zName, int syncDir); +static int apndAccess(sqlite3_vfs*, const char *zName, int flags, int *); +static int apndFullPathname(sqlite3_vfs*, const char *zName, int, char *zOut); +static void *apndDlOpen(sqlite3_vfs*, const char *zFilename); +static void apndDlError(sqlite3_vfs*, int nByte, char *zErrMsg); +static void (*apndDlSym(sqlite3_vfs *pVfs, void *p, const char*zSym))(void); +static void apndDlClose(sqlite3_vfs*, void*); +static int apndRandomness(sqlite3_vfs*, int nByte, char *zOut); +static int apndSleep(sqlite3_vfs*, int microseconds); +static int apndCurrentTime(sqlite3_vfs*, double*); +static int apndGetLastError(sqlite3_vfs*, int, char *); +static int apndCurrentTimeInt64(sqlite3_vfs*, sqlite3_int64*); +static int apndSetSystemCall(sqlite3_vfs*, const char*,sqlite3_syscall_ptr); +static sqlite3_syscall_ptr apndGetSystemCall(sqlite3_vfs*, const char *z); +static const char *apndNextSystemCall(sqlite3_vfs*, const char *zName); + +static sqlite3_vfs apnd_vfs = { + 3, /* iVersion (set when registered) */ + 0, /* szOsFile (set when registered) */ + 1024, /* mxPathname */ + 0, /* pNext */ + "apndvfs", /* zName */ + 0, /* pAppData (set when registered) */ + apndOpen, /* xOpen */ + apndDelete, /* xDelete */ + apndAccess, /* xAccess */ + apndFullPathname, /* xFullPathname */ + apndDlOpen, /* xDlOpen */ + apndDlError, /* xDlError */ + apndDlSym, /* xDlSym */ + apndDlClose, /* xDlClose */ + apndRandomness, /* xRandomness */ + apndSleep, /* xSleep */ + apndCurrentTime, /* xCurrentTime */ + apndGetLastError, /* xGetLastError */ + apndCurrentTimeInt64, /* xCurrentTimeInt64 */ + apndSetSystemCall, /* xSetSystemCall */ + apndGetSystemCall, /* xGetSystemCall */ + apndNextSystemCall /* xNextSystemCall */ +}; + +static const sqlite3_io_methods apnd_io_methods = { + 3, /* iVersion */ + apndClose, /* xClose */ + apndRead, /* xRead */ + apndWrite, /* xWrite */ + apndTruncate, /* xTruncate */ + apndSync, /* xSync */ + apndFileSize, /* xFileSize */ + apndLock, /* xLock */ + apndUnlock, /* xUnlock */ + apndCheckReservedLock, /* xCheckReservedLock */ + apndFileControl, /* xFileControl */ + apndSectorSize, /* xSectorSize */ + apndDeviceCharacteristics, /* xDeviceCharacteristics */ + apndShmMap, /* xShmMap */ + apndShmLock, /* xShmLock */ + apndShmBarrier, /* xShmBarrier */ + apndShmUnmap, /* xShmUnmap */ + apndFetch, /* xFetch */ + apndUnfetch /* xUnfetch */ +}; + +/* +** Close an apnd-file. +*/ +static int apndClose(sqlite3_file *pFile){ + pFile = ORIGFILE(pFile); + return pFile->pMethods->xClose(pFile); +} + +/* +** Read data from an apnd-file. +*/ +static int apndRead( + sqlite3_file *pFile, + void *zBuf, + int iAmt, + sqlite_int64 iOfst +){ + ApndFile *paf = (ApndFile *)pFile; + pFile = ORIGFILE(pFile); + return pFile->pMethods->xRead(pFile, zBuf, iAmt, paf->iPgOne+iOfst); +} + +/* +** Add the append-mark onto what should become the end of the file. +* If and only if this succeeds, internal ApndFile.iMark is updated. +* Parameter iWriteEnd is the appendvfs-relative offset of the new mark. +*/ +static int apndWriteMark( + ApndFile *paf, + sqlite3_file *pFile, + sqlite_int64 iWriteEnd +){ + sqlite_int64 iPgOne = paf->iPgOne; + unsigned char a[APND_MARK_SIZE]; + int i = APND_MARK_FOS_SZ; + int rc; + assert(pFile == ORIGFILE(paf)); + memcpy(a, APND_MARK_PREFIX, APND_MARK_PREFIX_SZ); + while( --i >= 0 ){ + a[APND_MARK_PREFIX_SZ+i] = (unsigned char)(iPgOne & 0xff); + iPgOne >>= 8; + } + iWriteEnd += paf->iPgOne; + if( SQLITE_OK==(rc = pFile->pMethods->xWrite + (pFile, a, APND_MARK_SIZE, iWriteEnd)) ){ + paf->iMark = iWriteEnd; + } + return rc; +} + +/* +** Write data to an apnd-file. +*/ +static int apndWrite( + sqlite3_file *pFile, + const void *zBuf, + int iAmt, + sqlite_int64 iOfst +){ + ApndFile *paf = (ApndFile *)pFile; + sqlite_int64 iWriteEnd = iOfst + iAmt; + if( iWriteEnd>=APND_MAX_SIZE ) return SQLITE_FULL; + pFile = ORIGFILE(pFile); + /* If append-mark is absent or will be overwritten, write it. */ + if( paf->iMark < 0 || paf->iPgOne + iWriteEnd > paf->iMark ){ + int rc = apndWriteMark(paf, pFile, iWriteEnd); + if( SQLITE_OK!=rc ) return rc; + } + return pFile->pMethods->xWrite(pFile, zBuf, iAmt, paf->iPgOne+iOfst); +} + +/* +** Truncate an apnd-file. +*/ +static int apndTruncate(sqlite3_file *pFile, sqlite_int64 size){ + ApndFile *paf = (ApndFile *)pFile; + pFile = ORIGFILE(pFile); + /* The append mark goes out first so truncate failure does not lose it. */ + if( SQLITE_OK!=apndWriteMark(paf, pFile, size) ) return SQLITE_IOERR; + /* Truncate underlying file just past append mark */ + return pFile->pMethods->xTruncate(pFile, paf->iMark+APND_MARK_SIZE); +} + +/* +** Sync an apnd-file. +*/ +static int apndSync(sqlite3_file *pFile, int flags){ + pFile = ORIGFILE(pFile); + return pFile->pMethods->xSync(pFile, flags); +} + +/* +** Return the current file-size of an apnd-file. +** If the append mark is not yet there, the file-size is 0. +*/ +static int apndFileSize(sqlite3_file *pFile, sqlite_int64 *pSize){ + ApndFile *paf = (ApndFile *)pFile; + *pSize = ( paf->iMark >= 0 )? (paf->iMark - paf->iPgOne) : 0; + return SQLITE_OK; +} + +/* +** Lock an apnd-file. +*/ +static int apndLock(sqlite3_file *pFile, int eLock){ + pFile = ORIGFILE(pFile); + return pFile->pMethods->xLock(pFile, eLock); +} + +/* +** Unlock an apnd-file. +*/ +static int apndUnlock(sqlite3_file *pFile, int eLock){ + pFile = ORIGFILE(pFile); + return pFile->pMethods->xUnlock(pFile, eLock); +} + +/* +** Check if another file-handle holds a RESERVED lock on an apnd-file. +*/ +static int apndCheckReservedLock(sqlite3_file *pFile, int *pResOut){ + pFile = ORIGFILE(pFile); + return pFile->pMethods->xCheckReservedLock(pFile, pResOut); +} + +/* +** File control method. For custom operations on an apnd-file. +*/ +static int apndFileControl(sqlite3_file *pFile, int op, void *pArg){ + ApndFile *paf = (ApndFile *)pFile; + int rc; + pFile = ORIGFILE(pFile); + if( op==SQLITE_FCNTL_SIZE_HINT ) *(sqlite3_int64*)pArg += paf->iPgOne; + rc = pFile->pMethods->xFileControl(pFile, op, pArg); + if( rc==SQLITE_OK && op==SQLITE_FCNTL_VFSNAME ){ + *(char**)pArg = sqlite3_mprintf("apnd(%lld)/%z", paf->iPgOne,*(char**)pArg); + } + return rc; +} + +/* +** Return the sector-size in bytes for an apnd-file. +*/ +static int apndSectorSize(sqlite3_file *pFile){ + pFile = ORIGFILE(pFile); + return pFile->pMethods->xSectorSize(pFile); +} + +/* +** Return the device characteristic flags supported by an apnd-file. +*/ +static int apndDeviceCharacteristics(sqlite3_file *pFile){ + pFile = ORIGFILE(pFile); + return pFile->pMethods->xDeviceCharacteristics(pFile); +} + +/* Create a shared memory file mapping */ +static int apndShmMap( + sqlite3_file *pFile, + int iPg, + int pgsz, + int bExtend, + void volatile **pp +){ + pFile = ORIGFILE(pFile); + return pFile->pMethods->xShmMap(pFile,iPg,pgsz,bExtend,pp); +} + +/* Perform locking on a shared-memory segment */ +static int apndShmLock(sqlite3_file *pFile, int offset, int n, int flags){ + pFile = ORIGFILE(pFile); + return pFile->pMethods->xShmLock(pFile,offset,n,flags); +} + +/* Memory barrier operation on shared memory */ +static void apndShmBarrier(sqlite3_file *pFile){ + pFile = ORIGFILE(pFile); + pFile->pMethods->xShmBarrier(pFile); +} + +/* Unmap a shared memory segment */ +static int apndShmUnmap(sqlite3_file *pFile, int deleteFlag){ + pFile = ORIGFILE(pFile); + return pFile->pMethods->xShmUnmap(pFile,deleteFlag); +} + +/* Fetch a page of a memory-mapped file */ +static int apndFetch( + sqlite3_file *pFile, + sqlite3_int64 iOfst, + int iAmt, + void **pp +){ + ApndFile *p = (ApndFile *)pFile; + if( p->iMark < 0 || iOfst+iAmt > p->iMark ){ + return SQLITE_IOERR; /* Cannot read what is not yet there. */ + } + pFile = ORIGFILE(pFile); + return pFile->pMethods->xFetch(pFile, iOfst+p->iPgOne, iAmt, pp); +} + +/* Release a memory-mapped page */ +static int apndUnfetch(sqlite3_file *pFile, sqlite3_int64 iOfst, void *pPage){ + ApndFile *p = (ApndFile *)pFile; + pFile = ORIGFILE(pFile); + return pFile->pMethods->xUnfetch(pFile, iOfst+p->iPgOne, pPage); +} + +/* +** Try to read the append-mark off the end of a file. Return the +** start of the appended database if the append-mark is present. +** If there is no valid append-mark, return -1; +** +** An append-mark is only valid if the NNNNNNNN start-of-database offset +** indicates that the appended database contains at least one page. The +** start-of-database value must be a multiple of 512. +*/ +static sqlite3_int64 apndReadMark(sqlite3_int64 sz, sqlite3_file *pFile){ + int rc, i; + sqlite3_int64 iMark; + int msbs = 8 * (APND_MARK_FOS_SZ-1); + unsigned char a[APND_MARK_SIZE]; + + if( APND_MARK_SIZE!=(sz & 0x1ff) ) return -1; + rc = pFile->pMethods->xRead(pFile, a, APND_MARK_SIZE, sz-APND_MARK_SIZE); + if( rc ) return -1; + if( memcmp(a, APND_MARK_PREFIX, APND_MARK_PREFIX_SZ)!=0 ) return -1; + iMark = ((sqlite3_int64)(a[APND_MARK_PREFIX_SZ] & 0x7f)) << msbs; + for(i=1; i<8; i++){ + msbs -= 8; + iMark |= (sqlite3_int64)a[APND_MARK_PREFIX_SZ+i]< (sz - APND_MARK_SIZE - 512) ) return -1; + if( iMark & 0x1ff ) return -1; + return iMark; +} + +static const char apvfsSqliteHdr[] = "SQLite format 3"; +/* +** Check to see if the file is an appendvfs SQLite database file. +** Return true iff it is such. Parameter sz is the file's size. +*/ +static int apndIsAppendvfsDatabase(sqlite3_int64 sz, sqlite3_file *pFile){ + int rc; + char zHdr[16]; + sqlite3_int64 iMark = apndReadMark(sz, pFile); + if( iMark>=0 ){ + /* If file has the correct end-marker, the expected odd size, and the + ** SQLite DB type marker where the end-marker puts it, then it + ** is an appendvfs database. + */ + rc = pFile->pMethods->xRead(pFile, zHdr, sizeof(zHdr), iMark); + if( SQLITE_OK==rc + && memcmp(zHdr, apvfsSqliteHdr, sizeof(zHdr))==0 + && (sz & 0x1ff) == APND_MARK_SIZE + && sz>=512+APND_MARK_SIZE + ){ + return 1; /* It's an appendvfs database */ + } + } + return 0; +} + +/* +** Check to see if the file is an ordinary SQLite database file. +** Return true iff so. Parameter sz is the file's size. +*/ +static int apndIsOrdinaryDatabaseFile(sqlite3_int64 sz, sqlite3_file *pFile){ + char zHdr[16]; + if( apndIsAppendvfsDatabase(sz, pFile) /* rule 2 */ + || (sz & 0x1ff) != 0 + || SQLITE_OK!=pFile->pMethods->xRead(pFile, zHdr, sizeof(zHdr), 0) + || memcmp(zHdr, apvfsSqliteHdr, sizeof(zHdr))!=0 + ){ + return 0; + }else{ + return 1; + } +} + +/* +** Open an apnd file handle. +*/ +static int apndOpen( + sqlite3_vfs *pApndVfs, + const char *zName, + sqlite3_file *pFile, + int flags, + int *pOutFlags +){ + ApndFile *pApndFile = (ApndFile*)pFile; + sqlite3_file *pBaseFile = ORIGFILE(pFile); + sqlite3_vfs *pBaseVfs = ORIGVFS(pApndVfs); + int rc; + sqlite3_int64 sz = 0; + if( (flags & SQLITE_OPEN_MAIN_DB)==0 ){ + /* The appendvfs is not to be used for transient or temporary databases. + ** Just use the base VFS open to initialize the given file object and + ** open the underlying file. (Appendvfs is then unused for this file.) + */ + return pBaseVfs->xOpen(pBaseVfs, zName, pFile, flags, pOutFlags); + } + memset(pApndFile, 0, sizeof(ApndFile)); + pFile->pMethods = &apnd_io_methods; + pApndFile->iMark = -1; /* Append mark not yet written */ + + rc = pBaseVfs->xOpen(pBaseVfs, zName, pBaseFile, flags, pOutFlags); + if( rc==SQLITE_OK ){ + rc = pBaseFile->pMethods->xFileSize(pBaseFile, &sz); + if( rc ){ + pBaseFile->pMethods->xClose(pBaseFile); + } + } + if( rc ){ + pFile->pMethods = 0; + return rc; + } + if( apndIsOrdinaryDatabaseFile(sz, pBaseFile) ){ + /* The file being opened appears to be just an ordinary DB. Copy + ** the base dispatch-table so this instance mimics the base VFS. + */ + memmove(pApndFile, pBaseFile, pBaseVfs->szOsFile); + return SQLITE_OK; + } + pApndFile->iPgOne = apndReadMark(sz, pFile); + if( pApndFile->iPgOne>=0 ){ + pApndFile->iMark = sz - APND_MARK_SIZE; /* Append mark found */ + return SQLITE_OK; + } + if( (flags & SQLITE_OPEN_CREATE)==0 ){ + pBaseFile->pMethods->xClose(pBaseFile); + rc = SQLITE_CANTOPEN; + pFile->pMethods = 0; + }else{ + /* Round newly added appendvfs location to #define'd page boundary. + ** Note that nothing has yet been written to the underlying file. + ** The append mark will be written along with first content write. + ** Until then, paf->iMark value indicates it is not yet written. + */ + pApndFile->iPgOne = APND_START_ROUNDUP(sz); + } + return rc; +} + +/* +** Delete an apnd file. +** For an appendvfs, this could mean delete the appendvfs portion, +** leaving the appendee as it was before it gained an appendvfs. +** For now, this code deletes the underlying file too. +*/ +static int apndDelete(sqlite3_vfs *pVfs, const char *zPath, int dirSync){ + return ORIGVFS(pVfs)->xDelete(ORIGVFS(pVfs), zPath, dirSync); +} + +/* +** All other VFS methods are pass-thrus. +*/ +static int apndAccess( + sqlite3_vfs *pVfs, + const char *zPath, + int flags, + int *pResOut +){ + return ORIGVFS(pVfs)->xAccess(ORIGVFS(pVfs), zPath, flags, pResOut); +} +static int apndFullPathname( + sqlite3_vfs *pVfs, + const char *zPath, + int nOut, + char *zOut +){ + return ORIGVFS(pVfs)->xFullPathname(ORIGVFS(pVfs),zPath,nOut,zOut); +} +static void *apndDlOpen(sqlite3_vfs *pVfs, const char *zPath){ + return ORIGVFS(pVfs)->xDlOpen(ORIGVFS(pVfs), zPath); +} +static void apndDlError(sqlite3_vfs *pVfs, int nByte, char *zErrMsg){ + ORIGVFS(pVfs)->xDlError(ORIGVFS(pVfs), nByte, zErrMsg); +} +static void (*apndDlSym(sqlite3_vfs *pVfs, void *p, const char *zSym))(void){ + return ORIGVFS(pVfs)->xDlSym(ORIGVFS(pVfs), p, zSym); +} +static void apndDlClose(sqlite3_vfs *pVfs, void *pHandle){ + ORIGVFS(pVfs)->xDlClose(ORIGVFS(pVfs), pHandle); +} +static int apndRandomness(sqlite3_vfs *pVfs, int nByte, char *zBufOut){ + return ORIGVFS(pVfs)->xRandomness(ORIGVFS(pVfs), nByte, zBufOut); +} +static int apndSleep(sqlite3_vfs *pVfs, int nMicro){ + return ORIGVFS(pVfs)->xSleep(ORIGVFS(pVfs), nMicro); +} +static int apndCurrentTime(sqlite3_vfs *pVfs, double *pTimeOut){ + return ORIGVFS(pVfs)->xCurrentTime(ORIGVFS(pVfs), pTimeOut); +} +static int apndGetLastError(sqlite3_vfs *pVfs, int a, char *b){ + return ORIGVFS(pVfs)->xGetLastError(ORIGVFS(pVfs), a, b); +} +static int apndCurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *p){ + return ORIGVFS(pVfs)->xCurrentTimeInt64(ORIGVFS(pVfs), p); +} +static int apndSetSystemCall( + sqlite3_vfs *pVfs, + const char *zName, + sqlite3_syscall_ptr pCall +){ + return ORIGVFS(pVfs)->xSetSystemCall(ORIGVFS(pVfs),zName,pCall); +} +static sqlite3_syscall_ptr apndGetSystemCall( + sqlite3_vfs *pVfs, + const char *zName +){ + return ORIGVFS(pVfs)->xGetSystemCall(ORIGVFS(pVfs),zName); +} +static const char *apndNextSystemCall(sqlite3_vfs *pVfs, const char *zName){ + return ORIGVFS(pVfs)->xNextSystemCall(ORIGVFS(pVfs), zName); +} + + +#ifdef _WIN32 + +#endif +/* +** This routine is called when the extension is loaded. +** Register the new VFS. +*/ +int sqlite3_appendvfs_init( + sqlite3 *db, + char **pzErrMsg, + const sqlite3_api_routines *pApi +){ + int rc = SQLITE_OK; + sqlite3_vfs *pOrig; + SQLITE_EXTENSION_INIT2(pApi); + (void)pzErrMsg; + (void)db; + pOrig = sqlite3_vfs_find(0); + if( pOrig==0 ) return SQLITE_ERROR; + apnd_vfs.iVersion = pOrig->iVersion; + apnd_vfs.pAppData = pOrig; + apnd_vfs.szOsFile = pOrig->szOsFile + sizeof(ApndFile); + rc = sqlite3_vfs_register(&apnd_vfs, 0); +#ifdef APPENDVFS_TEST + if( rc==SQLITE_OK ){ + rc = sqlite3_auto_extension((void(*)(void))apndvfsRegister); + } +#endif + if( rc==SQLITE_OK ) rc = SQLITE_OK_LOAD_PERMANENTLY; + return rc; +} + +/************************* End ../ext/misc/appendvfs.c ********************/ +/************************* Begin ../ext/misc/memtrace.c ******************/ +/* +** 2019-01-21 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +************************************************************************* +** +** This file implements an extension that uses the SQLITE_CONFIG_MALLOC +** mechanism to add a tracing layer on top of SQLite. If this extension +** is registered prior to sqlite3_initialize(), it will cause all memory +** allocation activities to be logged on standard output, or to some other +** FILE specified by the initializer. +** +** This file needs to be compiled into the application that uses it. +** +** This extension is used to implement the --memtrace option of the +** command-line shell. +*/ +#include +#include +#include + +/* The original memory allocation routines */ +static sqlite3_mem_methods memtraceBase; +static FILE *memtraceOut; + +/* Methods that trace memory allocations */ +static void *memtraceMalloc(int n){ + if( memtraceOut ){ + fprintf(memtraceOut, "MEMTRACE: allocate %d bytes\n", + memtraceBase.xRoundup(n)); + } + return memtraceBase.xMalloc(n); +} +static void memtraceFree(void *p){ + if( p==0 ) return; + if( memtraceOut ){ + fprintf(memtraceOut, "MEMTRACE: free %d bytes\n", memtraceBase.xSize(p)); + } + memtraceBase.xFree(p); +} +static void *memtraceRealloc(void *p, int n){ + if( p==0 ) return memtraceMalloc(n); + if( n==0 ){ + memtraceFree(p); + return 0; + } + if( memtraceOut ){ + fprintf(memtraceOut, "MEMTRACE: resize %d -> %d bytes\n", + memtraceBase.xSize(p), memtraceBase.xRoundup(n)); + } + return memtraceBase.xRealloc(p, n); +} +static int memtraceSize(void *p){ + return memtraceBase.xSize(p); +} +static int memtraceRoundup(int n){ + return memtraceBase.xRoundup(n); +} +static int memtraceInit(void *p){ + return memtraceBase.xInit(p); +} +static void memtraceShutdown(void *p){ + memtraceBase.xShutdown(p); +} + +/* The substitute memory allocator */ +static sqlite3_mem_methods ersaztMethods = { + memtraceMalloc, + memtraceFree, + memtraceRealloc, + memtraceSize, + memtraceRoundup, + memtraceInit, + memtraceShutdown, + 0 +}; + +/* Begin tracing memory allocations to out. */ +int sqlite3MemTraceActivate(FILE *out){ + int rc = SQLITE_OK; + if( memtraceBase.xMalloc==0 ){ + rc = sqlite3_config(SQLITE_CONFIG_GETMALLOC, &memtraceBase); + if( rc==SQLITE_OK ){ + rc = sqlite3_config(SQLITE_CONFIG_MALLOC, &ersaztMethods); + } + } + memtraceOut = out; + return rc; +} + +/* Deactivate memory tracing */ +int sqlite3MemTraceDeactivate(void){ + int rc = SQLITE_OK; + if( memtraceBase.xMalloc!=0 ){ + rc = sqlite3_config(SQLITE_CONFIG_MALLOC, &memtraceBase); + if( rc==SQLITE_OK ){ + memset(&memtraceBase, 0, sizeof(memtraceBase)); + } + } + memtraceOut = 0; + return rc; +} + +/************************* End ../ext/misc/memtrace.c ********************/ +/************************* Begin ../ext/misc/uint.c ******************/ +/* +** 2020-04-14 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This SQLite extension implements the UINT collating sequence. +** +** UINT works like BINARY for text, except that embedded strings +** of digits compare in numeric order. +** +** * Leading zeros are handled properly, in the sense that +** they do not mess of the maginitude comparison of embedded +** strings of digits. "x00123y" is equal to "x123y". +** +** * Only unsigned integers are recognized. Plus and minus +** signs are ignored. Decimal points and exponential notation +** are ignored. +** +** * Embedded integers can be of arbitrary length. Comparison +** is *not* limited integers that can be expressed as a +** 64-bit machine integer. +*/ +/* #include "sqlite3ext.h" */ +SQLITE_EXTENSION_INIT1 +#include +#include +#include + +/* +** Compare text in lexicographic order, except strings of digits +** compare in numeric order. +*/ +static int uintCollFunc( + void *notUsed, + int nKey1, const void *pKey1, + int nKey2, const void *pKey2 +){ + const unsigned char *zA = (const unsigned char*)pKey1; + const unsigned char *zB = (const unsigned char*)pKey2; + int i=0, j=0, x; + (void)notUsed; + while( i +#include +#include +#include + +/* Mark a function parameter as unused, to suppress nuisance compiler +** warnings. */ +#ifndef UNUSED_PARAMETER +# define UNUSED_PARAMETER(X) (void)(X) +#endif + + +/* A decimal object */ +typedef struct Decimal Decimal; +struct Decimal { + char sign; /* 0 for positive, 1 for negative */ + char oom; /* True if an OOM is encountered */ + char isNull; /* True if holds a NULL rather than a number */ + char isInit; /* True upon initialization */ + int nDigit; /* Total number of digits */ + int nFrac; /* Number of digits to the right of the decimal point */ + signed char *a; /* Array of digits. Most significant first. */ +}; + +/* +** Release memory held by a Decimal, but do not free the object itself. +*/ +static void decimal_clear(Decimal *p){ + sqlite3_free(p->a); +} + +/* +** Destroy a Decimal object +*/ +static void decimal_free(Decimal *p){ + if( p ){ + decimal_clear(p); + sqlite3_free(p); + } +} + +/* +** Allocate a new Decimal object. Initialize it to the number given +** by the input string. +*/ +static Decimal *decimal_new( + sqlite3_context *pCtx, + sqlite3_value *pIn, + int nAlt, + const unsigned char *zAlt +){ + Decimal *p; + int n, i; + const unsigned char *zIn; + int iExp = 0; + p = sqlite3_malloc( sizeof(*p) ); + if( p==0 ) goto new_no_mem; + p->sign = 0; + p->oom = 0; + p->isInit = 1; + p->isNull = 0; + p->nDigit = 0; + p->nFrac = 0; + if( zAlt ){ + n = nAlt, + zIn = zAlt; + }else{ + if( sqlite3_value_type(pIn)==SQLITE_NULL ){ + p->a = 0; + p->isNull = 1; + return p; + } + n = sqlite3_value_bytes(pIn); + zIn = sqlite3_value_text(pIn); + } + p->a = sqlite3_malloc64( n+1 ); + if( p->a==0 ) goto new_no_mem; + for(i=0; isspace(zIn[i]); i++){} + if( zIn[i]=='-' ){ + p->sign = 1; + i++; + }else if( zIn[i]=='+' ){ + i++; + } + while( i='0' && c<='9' ){ + p->a[p->nDigit++] = c - '0'; + }else if( c=='.' ){ + p->nFrac = p->nDigit + 1; + }else if( c=='e' || c=='E' ){ + int j = i+1; + int neg = 0; + if( j>=n ) break; + if( zIn[j]=='-' ){ + neg = 1; + j++; + }else if( zIn[j]=='+' ){ + j++; + } + while( j='0' && zIn[j]<='9' ){ + iExp = iExp*10 + zIn[j] - '0'; + } + j++; + } + if( neg ) iExp = -iExp; + break; + } + i++; + } + if( p->nFrac ){ + p->nFrac = p->nDigit - (p->nFrac - 1); + } + if( iExp>0 ){ + if( p->nFrac>0 ){ + if( iExp<=p->nFrac ){ + p->nFrac -= iExp; + iExp = 0; + }else{ + iExp -= p->nFrac; + p->nFrac = 0; + } + } + if( iExp>0 ){ + p->a = sqlite3_realloc64(p->a, p->nDigit + iExp + 1 ); + if( p->a==0 ) goto new_no_mem; + memset(p->a+p->nDigit, 0, iExp); + p->nDigit += iExp; + } + }else if( iExp<0 ){ + int nExtra; + iExp = -iExp; + nExtra = p->nDigit - p->nFrac - 1; + if( nExtra ){ + if( nExtra>=iExp ){ + p->nFrac += iExp; + iExp = 0; + }else{ + iExp -= nExtra; + p->nFrac = p->nDigit - 1; + } + } + if( iExp>0 ){ + p->a = sqlite3_realloc64(p->a, p->nDigit + iExp + 1 ); + if( p->a==0 ) goto new_no_mem; + memmove(p->a+iExp, p->a, p->nDigit); + memset(p->a, 0, iExp); + p->nDigit += iExp; + p->nFrac += iExp; + } + } + return p; + +new_no_mem: + if( pCtx ) sqlite3_result_error_nomem(pCtx); + sqlite3_free(p); + return 0; +} + +/* +** Make the given Decimal the result. +*/ +static void decimal_result(sqlite3_context *pCtx, Decimal *p){ + char *z; + int i, j; + int n; + if( p==0 || p->oom ){ + sqlite3_result_error_nomem(pCtx); + return; + } + if( p->isNull ){ + sqlite3_result_null(pCtx); + return; + } + z = sqlite3_malloc( p->nDigit+4 ); + if( z==0 ){ + sqlite3_result_error_nomem(pCtx); + return; + } + i = 0; + if( p->nDigit==0 || (p->nDigit==1 && p->a[0]==0) ){ + p->sign = 0; + } + if( p->sign ){ + z[0] = '-'; + i = 1; + } + n = p->nDigit - p->nFrac; + if( n<=0 ){ + z[i++] = '0'; + } + j = 0; + while( n>1 && p->a[j]==0 ){ + j++; + n--; + } + while( n>0 ){ + z[i++] = p->a[j] + '0'; + j++; + n--; + } + if( p->nFrac ){ + z[i++] = '.'; + do{ + z[i++] = p->a[j] + '0'; + j++; + }while( jnDigit ); + } + z[i] = 0; + sqlite3_result_text(pCtx, z, i, sqlite3_free); +} + +/* +** SQL Function: decimal(X) +** +** Convert input X into decimal and then back into text +*/ +static void decimalFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + Decimal *p = decimal_new(context, argv[0], 0, 0); + UNUSED_PARAMETER(argc); + decimal_result(context, p); + decimal_free(p); +} + +/* +** Compare to Decimal objects. Return negative, 0, or positive if the +** first object is less than, equal to, or greater than the second. +** +** Preconditions for this routine: +** +** pA!=0 +** pA->isNull==0 +** pB!=0 +** pB->isNull==0 +*/ +static int decimal_cmp(const Decimal *pA, const Decimal *pB){ + int nASig, nBSig, rc, n; + if( pA->sign!=pB->sign ){ + return pA->sign ? -1 : +1; + } + if( pA->sign ){ + const Decimal *pTemp = pA; + pA = pB; + pB = pTemp; + } + nASig = pA->nDigit - pA->nFrac; + nBSig = pB->nDigit - pB->nFrac; + if( nASig!=nBSig ){ + return nASig - nBSig; + } + n = pA->nDigit; + if( n>pB->nDigit ) n = pB->nDigit; + rc = memcmp(pA->a, pB->a, n); + if( rc==0 ){ + rc = pA->nDigit - pB->nDigit; + } + return rc; +} + +/* +** SQL Function: decimal_cmp(X, Y) +** +** Return negative, zero, or positive if X is less then, equal to, or +** greater than Y. +*/ +static void decimalCmpFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + Decimal *pA = 0, *pB = 0; + int rc; + + UNUSED_PARAMETER(argc); + pA = decimal_new(context, argv[0], 0, 0); + if( pA==0 || pA->isNull ) goto cmp_done; + pB = decimal_new(context, argv[1], 0, 0); + if( pB==0 || pB->isNull ) goto cmp_done; + rc = decimal_cmp(pA, pB); + if( rc<0 ) rc = -1; + else if( rc>0 ) rc = +1; + sqlite3_result_int(context, rc); +cmp_done: + decimal_free(pA); + decimal_free(pB); +} + +/* +** Expand the Decimal so that it has a least nDigit digits and nFrac +** digits to the right of the decimal point. +*/ +static void decimal_expand(Decimal *p, int nDigit, int nFrac){ + int nAddSig; + int nAddFrac; + if( p==0 ) return; + nAddFrac = nFrac - p->nFrac; + nAddSig = (nDigit - p->nDigit) - nAddFrac; + if( nAddFrac==0 && nAddSig==0 ) return; + p->a = sqlite3_realloc64(p->a, nDigit+1); + if( p->a==0 ){ + p->oom = 1; + return; + } + if( nAddSig ){ + memmove(p->a+nAddSig, p->a, p->nDigit); + memset(p->a, 0, nAddSig); + p->nDigit += nAddSig; + } + if( nAddFrac ){ + memset(p->a+p->nDigit, 0, nAddFrac); + p->nDigit += nAddFrac; + p->nFrac += nAddFrac; + } +} + +/* +** Add the value pB into pA. +** +** Both pA and pB might become denormalized by this routine. +*/ +static void decimal_add(Decimal *pA, Decimal *pB){ + int nSig, nFrac, nDigit; + int i, rc; + if( pA==0 ){ + return; + } + if( pA->oom || pB==0 || pB->oom ){ + pA->oom = 1; + return; + } + if( pA->isNull || pB->isNull ){ + pA->isNull = 1; + return; + } + nSig = pA->nDigit - pA->nFrac; + if( nSig && pA->a[0]==0 ) nSig--; + if( nSignDigit-pB->nFrac ){ + nSig = pB->nDigit - pB->nFrac; + } + nFrac = pA->nFrac; + if( nFracnFrac ) nFrac = pB->nFrac; + nDigit = nSig + nFrac + 1; + decimal_expand(pA, nDigit, nFrac); + decimal_expand(pB, nDigit, nFrac); + if( pA->oom || pB->oom ){ + pA->oom = 1; + }else{ + if( pA->sign==pB->sign ){ + int carry = 0; + for(i=nDigit-1; i>=0; i--){ + int x = pA->a[i] + pB->a[i] + carry; + if( x>=10 ){ + carry = 1; + pA->a[i] = x - 10; + }else{ + carry = 0; + pA->a[i] = x; + } + } + }else{ + signed char *aA, *aB; + int borrow = 0; + rc = memcmp(pA->a, pB->a, nDigit); + if( rc<0 ){ + aA = pB->a; + aB = pA->a; + pA->sign = !pA->sign; + }else{ + aA = pA->a; + aB = pB->a; + } + for(i=nDigit-1; i>=0; i--){ + int x = aA[i] - aB[i] - borrow; + if( x<0 ){ + pA->a[i] = x+10; + borrow = 1; + }else{ + pA->a[i] = x; + borrow = 0; + } + } + } + } +} + +/* +** Compare text in decimal order. +*/ +static int decimalCollFunc( + void *notUsed, + int nKey1, const void *pKey1, + int nKey2, const void *pKey2 +){ + const unsigned char *zA = (const unsigned char*)pKey1; + const unsigned char *zB = (const unsigned char*)pKey2; + Decimal *pA = decimal_new(0, 0, nKey1, zA); + Decimal *pB = decimal_new(0, 0, nKey2, zB); + int rc; + UNUSED_PARAMETER(notUsed); + if( pA==0 || pB==0 ){ + rc = 0; + }else{ + rc = decimal_cmp(pA, pB); + } + decimal_free(pA); + decimal_free(pB); + return rc; +} + + +/* +** SQL Function: decimal_add(X, Y) +** decimal_sub(X, Y) +** +** Return the sum or difference of X and Y. +*/ +static void decimalAddFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + Decimal *pA = decimal_new(context, argv[0], 0, 0); + Decimal *pB = decimal_new(context, argv[1], 0, 0); + UNUSED_PARAMETER(argc); + decimal_add(pA, pB); + decimal_result(context, pA); + decimal_free(pA); + decimal_free(pB); +} +static void decimalSubFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + Decimal *pA = decimal_new(context, argv[0], 0, 0); + Decimal *pB = decimal_new(context, argv[1], 0, 0); + UNUSED_PARAMETER(argc); + if( pB ){ + pB->sign = !pB->sign; + decimal_add(pA, pB); + decimal_result(context, pA); + } + decimal_free(pA); + decimal_free(pB); +} + +/* Aggregate funcion: decimal_sum(X) +** +** Works like sum() except that it uses decimal arithmetic for unlimited +** precision. +*/ +static void decimalSumStep( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + Decimal *p; + Decimal *pArg; + UNUSED_PARAMETER(argc); + p = sqlite3_aggregate_context(context, sizeof(*p)); + if( p==0 ) return; + if( !p->isInit ){ + p->isInit = 1; + p->a = sqlite3_malloc(2); + if( p->a==0 ){ + p->oom = 1; + }else{ + p->a[0] = 0; + } + p->nDigit = 1; + p->nFrac = 0; + } + if( sqlite3_value_type(argv[0])==SQLITE_NULL ) return; + pArg = decimal_new(context, argv[0], 0, 0); + decimal_add(p, pArg); + decimal_free(pArg); +} +static void decimalSumInverse( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + Decimal *p; + Decimal *pArg; + UNUSED_PARAMETER(argc); + p = sqlite3_aggregate_context(context, sizeof(*p)); + if( p==0 ) return; + if( sqlite3_value_type(argv[0])==SQLITE_NULL ) return; + pArg = decimal_new(context, argv[0], 0, 0); + if( pArg ) pArg->sign = !pArg->sign; + decimal_add(p, pArg); + decimal_free(pArg); +} +static void decimalSumValue(sqlite3_context *context){ + Decimal *p = sqlite3_aggregate_context(context, 0); + if( p==0 ) return; + decimal_result(context, p); +} +static void decimalSumFinalize(sqlite3_context *context){ + Decimal *p = sqlite3_aggregate_context(context, 0); + if( p==0 ) return; + decimal_result(context, p); + decimal_clear(p); +} + +/* +** SQL Function: decimal_mul(X, Y) +** +** Return the product of X and Y. +** +** All significant digits after the decimal point are retained. +** Trailing zeros after the decimal point are omitted as long as +** the number of digits after the decimal point is no less than +** either the number of digits in either input. +*/ +static void decimalMulFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + Decimal *pA = decimal_new(context, argv[0], 0, 0); + Decimal *pB = decimal_new(context, argv[1], 0, 0); + signed char *acc = 0; + int i, j, k; + int minFrac; + UNUSED_PARAMETER(argc); + if( pA==0 || pA->oom || pA->isNull + || pB==0 || pB->oom || pB->isNull + ){ + goto mul_end; + } + acc = sqlite3_malloc64( pA->nDigit + pB->nDigit + 2 ); + if( acc==0 ){ + sqlite3_result_error_nomem(context); + goto mul_end; + } + memset(acc, 0, pA->nDigit + pB->nDigit + 2); + minFrac = pA->nFrac; + if( pB->nFracnFrac; + for(i=pA->nDigit-1; i>=0; i--){ + signed char f = pA->a[i]; + int carry = 0, x; + for(j=pB->nDigit-1, k=i+j+3; j>=0; j--, k--){ + x = acc[k] + f*pB->a[j] + carry; + acc[k] = x%10; + carry = x/10; + } + x = acc[k] + carry; + acc[k] = x%10; + acc[k-1] += x/10; + } + sqlite3_free(pA->a); + pA->a = acc; + acc = 0; + pA->nDigit += pB->nDigit + 2; + pA->nFrac += pB->nFrac; + pA->sign ^= pB->sign; + while( pA->nFrac>minFrac && pA->a[pA->nDigit-1]==0 ){ + pA->nFrac--; + pA->nDigit--; + } + decimal_result(context, pA); + +mul_end: + sqlite3_free(acc); + decimal_free(pA); + decimal_free(pB); +} + +#ifdef _WIN32 + +#endif +int sqlite3_decimal_init( + sqlite3 *db, + char **pzErrMsg, + const sqlite3_api_routines *pApi +){ + int rc = SQLITE_OK; + static const struct { + const char *zFuncName; + int nArg; + void (*xFunc)(sqlite3_context*,int,sqlite3_value**); + } aFunc[] = { + { "decimal", 1, decimalFunc }, + { "decimal_cmp", 2, decimalCmpFunc }, + { "decimal_add", 2, decimalAddFunc }, + { "decimal_sub", 2, decimalSubFunc }, + { "decimal_mul", 2, decimalMulFunc }, + }; + unsigned int i; + (void)pzErrMsg; /* Unused parameter */ + + SQLITE_EXTENSION_INIT2(pApi); + + for(i=0; i 'ieee754(2,0)' +** ieee754(45.25) -> 'ieee754(181,-2)' +** ieee754(2, 0) -> 2.0 +** ieee754(181, -2) -> 45.25 +** +** Two additional functions break apart the one-argument ieee754() +** result into separate integer values: +** +** ieee754_mantissa(45.25) -> 181 +** ieee754_exponent(45.25) -> -2 +** +** These functions convert binary64 numbers into blobs and back again. +** +** ieee754_from_blob(x'3ff0000000000000') -> 1.0 +** ieee754_to_blob(1.0) -> x'3ff0000000000000' +** +** In all single-argument functions, if the argument is an 8-byte blob +** then that blob is interpreted as a big-endian binary64 value. +** +** +** EXACT DECIMAL REPRESENTATION OF BINARY64 VALUES +** ----------------------------------------------- +** +** This extension in combination with the separate 'decimal' extension +** can be used to compute the exact decimal representation of binary64 +** values. To begin, first compute a table of exponent values: +** +** CREATE TABLE pow2(x INTEGER PRIMARY KEY, v TEXT); +** WITH RECURSIVE c(x,v) AS ( +** VALUES(0,'1') +** UNION ALL +** SELECT x+1, decimal_mul(v,'2') FROM c WHERE x+1<=971 +** ) INSERT INTO pow2(x,v) SELECT x, v FROM c; +** WITH RECURSIVE c(x,v) AS ( +** VALUES(-1,'0.5') +** UNION ALL +** SELECT x-1, decimal_mul(v,'0.5') FROM c WHERE x-1>=-1075 +** ) INSERT INTO pow2(x,v) SELECT x, v FROM c; +** +** Then, to compute the exact decimal representation of a floating +** point value (the value 47.49 is used in the example) do: +** +** WITH c(n) AS (VALUES(47.49)) +** ---------------^^^^^---- Replace with whatever you want +** SELECT decimal_mul(ieee754_mantissa(c.n),pow2.v) +** FROM pow2, c WHERE pow2.x=ieee754_exponent(c.n); +** +** Here is a query to show various boundry values for the binary64 +** number format: +** +** WITH c(name,bin) AS (VALUES +** ('minimum positive value', x'0000000000000001'), +** ('maximum subnormal value', x'000fffffffffffff'), +** ('mininum positive nornal value', x'0010000000000000'), +** ('maximum value', x'7fefffffffffffff')) +** SELECT c.name, decimal_mul(ieee754_mantissa(c.bin),pow2.v) +** FROM pow2, c WHERE pow2.x=ieee754_exponent(c.bin); +** +*/ +/* #include "sqlite3ext.h" */ +SQLITE_EXTENSION_INIT1 +#include +#include + +/* Mark a function parameter as unused, to suppress nuisance compiler +** warnings. */ +#ifndef UNUSED_PARAMETER +# define UNUSED_PARAMETER(X) (void)(X) +#endif + +/* +** Implementation of the ieee754() function +*/ +static void ieee754func( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + if( argc==1 ){ + sqlite3_int64 m, a; + double r; + int e; + int isNeg; + char zResult[100]; + assert( sizeof(m)==sizeof(r) ); + if( sqlite3_value_type(argv[0])==SQLITE_BLOB + && sqlite3_value_bytes(argv[0])==sizeof(r) + ){ + const unsigned char *x = sqlite3_value_blob(argv[0]); + unsigned int i; + sqlite3_uint64 v = 0; + for(i=0; i>52; + m = a & ((((sqlite3_int64)1)<<52)-1); + if( e==0 ){ + m <<= 1; + }else{ + m |= ((sqlite3_int64)1)<<52; + } + while( e<1075 && m>0 && (m&1)==0 ){ + m >>= 1; + e++; + } + if( isNeg ) m = -m; + } + switch( *(int*)sqlite3_user_data(context) ){ + case 0: + sqlite3_snprintf(sizeof(zResult), zResult, "ieee754(%lld,%d)", + m, e-1075); + sqlite3_result_text(context, zResult, -1, SQLITE_TRANSIENT); + break; + case 1: + sqlite3_result_int64(context, m); + break; + case 2: + sqlite3_result_int(context, e-1075); + break; + } + }else{ + sqlite3_int64 m, e, a; + double r; + int isNeg = 0; + m = sqlite3_value_int64(argv[0]); + e = sqlite3_value_int64(argv[1]); + + /* Limit the range of e. Ticket 22dea1cfdb9151e4 2021-03-02 */ + if( e>10000 ){ + e = 10000; + }else if( e<-10000 ){ + e = -10000; + } + + if( m<0 ){ + isNeg = 1; + m = -m; + if( m<0 ) return; + }else if( m==0 && e>-1000 && e<1000 ){ + sqlite3_result_double(context, 0.0); + return; + } + while( (m>>32)&0xffe00000 ){ + m >>= 1; + e++; + } + while( m!=0 && ((m>>32)&0xfff00000)==0 ){ + m <<= 1; + e--; + } + e += 1075; + if( e<=0 ){ + /* Subnormal */ + if( 1-e >= 64 ){ + m = 0; + }else{ + m >>= 1-e; + } + e = 0; + }else if( e>0x7ff ){ + e = 0x7ff; + } + a = m & ((((sqlite3_int64)1)<<52)-1); + a |= e<<52; + if( isNeg ) a |= ((sqlite3_uint64)1)<<63; + memcpy(&r, &a, sizeof(r)); + sqlite3_result_double(context, r); + } +} + +/* +** Functions to convert between blobs and floats. +*/ +static void ieee754func_from_blob( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + UNUSED_PARAMETER(argc); + if( sqlite3_value_type(argv[0])==SQLITE_BLOB + && sqlite3_value_bytes(argv[0])==sizeof(double) + ){ + double r; + const unsigned char *x = sqlite3_value_blob(argv[0]); + unsigned int i; + sqlite3_uint64 v = 0; + for(i=0; i>= 8; + } + sqlite3_result_blob(context, a, sizeof(r), SQLITE_TRANSIENT); + } +} + + +#ifdef _WIN32 + +#endif +int sqlite3_ieee_init( + sqlite3 *db, + char **pzErrMsg, + const sqlite3_api_routines *pApi +){ + static const struct { + char *zFName; + int nArg; + int iAux; + void (*xFunc)(sqlite3_context*,int,sqlite3_value**); + } aFunc[] = { + { "ieee754", 1, 0, ieee754func }, + { "ieee754", 2, 0, ieee754func }, + { "ieee754_mantissa", 1, 1, ieee754func }, + { "ieee754_exponent", 1, 2, ieee754func }, + { "ieee754_to_blob", 1, 0, ieee754func_to_blob }, + { "ieee754_from_blob", 1, 0, ieee754func_from_blob }, + + }; + unsigned int i; + int rc = SQLITE_OK; + SQLITE_EXTENSION_INIT2(pApi); + (void)pzErrMsg; /* Unused parameter */ + for(i=0; i