Add scripts gitshow and gitshowview

Makefile.am

@@ -16,6 +16,8 @@ bin_SCRIPTS = \
 dist_bin_SCRIPTS = \
 	patchview/gitdiff \
 	patchview/gitdiffview \
+	patchview/gitshow \
+	patchview/gitshowview \
 	patchview/svndiff \
 	patchview/svndiffview
 

README.md

@@ -48,6 +48,8 @@ Patchutils is a small collection of programs that operate on patch files. It pro
 
 - **gitdiff** / **gitdiffview** - Git-specific diff viewing tools.
 
+- **gitshow** / **gitshowview** - Git-specific show viewing tools.
+
 - **svndiff** / **svndiffview** - Subversion-specific diff viewing tools.
 
 ## Installation

patchview/README.patchview

@@ -1,38 +1,34 @@
 So what is patchview? It is a wrapper of filterdiff for use with numbered files.
 
     $ patchview
-    (without args)
 
-is equivalent to: lsdiff --number
+Without args is equivalent to: lsdiff --number
 
     $ patchview -F2-
-    (or with any other args)
+
 
-is equivalent to: filterdiff -F2- (or whatever arguments are supplied)
+With one or more args is equivalent to: filterdiff args
+
+There are 4 scripts for working with git repos (gitdiff, gitdiffview, gitshow and gitshowview) and 2 for svn (svndiff and svndiffview).
+Also these scripts have option -v which shows the full command that is which is being executed.
 
-There are two scripts for working with git (gitdiff and gitdiffview) and two for svn (svndiff and svndiffview).
 
     $ svndiff
-    $ gitdiff
-    (without args)
-
-will give the list of files modified
+    $ gitdiff 
 
-    $ svndiff -F1
-    $ gitdiff -F1
-
-will show the patch of file #1
+Without args, will give the list of files modified
+With args will show the patches according the args, for example, `gitdiff -F1` will show the patch for first file
 
     $ svndiffview
     $ gitdiffview
 
-pipe all patches through filterdiff to `vim - -R` (in read-only mode, easy to quit), showing complete patch with color.
+Without args will pipe all patches through filterdiff to `vim - -R` (in read-only mode, easy to quit), showing complete patch with colors.
+With args will pipe the patches according the args, for example, `gitsvnview -F2` will pipe the patch for second file to `vim - -R`.
 
-    $ svndiffview -F2
-    $ gitdiffview -F2
-    (or any other args)
+    $ gitshow
+    $ gitshowview
 
-will pipe patch of file #2 to `vim - -R`
+Is the same of gitdiff but use `git show` instead of `git diff`. 
 
 Example:
 We can make the following one-line script with the name difftotrunk.sh, to view the differences of two directories or svn repos (trunk and .)

patchview/gitshow

@@ -0,0 +1,47 @@
+#!/usr/bin/python3
+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2015-2020 Sérgio Basto <sergio@serjux.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+
+import os
+import sys
+import argparse
+from subprocess import Popen, PIPE
+
+enviro = os.environ
+workdir = '.'
+
+parser = argparse.ArgumentParser()
+parser.add_argument('-v', '--debug',
+                    help='writes the commands that will be executed',
+                    action='store_true')
+parser.add_argument('git_args', nargs='*', default=[])
+parser.add_argument('patchview_args', nargs=argparse.REMAINDER)
+args, unknown = parser.parse_known_args()
+largs = vars(args).get("git_args")
+rargs = vars(args).get("patchview_args")
+
+if args.debug:
+    print("%s | %s" % (" ".join(['git', 'diff'] + largs),
+          " ".join(['patchview'] + rargs + unknown)))
+
+p1 = Popen(['git', 'show'] + largs, stdout=PIPE, env=enviro, cwd=workdir)
+p2 = Popen(['patchview'] + rargs + unknown, stdin=p1.stdout, stdout=PIPE,
+           env=enviro, cwd=workdir)
+p1.stdout.close()  # Allow p1 to receive a SIGPIPE if p2 exits.
+sys.stdout.buffer.write(p2.communicate()[0])

patchview/gitshowview

@@ -0,0 +1,20 @@
+#!/bin/sh
+#
+# Copyright (C) 2014-2020 Sérgio Basto <sergio@serjux.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+
+gitshow --filter "$@" | vim -R -