#!/bin/sh
-# Thanks to Thomas Rast
-# http://thread.gmane.org/gmane.comp.version-control.git/124807
+# Copyright 2010 - 2012, Tim Henigan <tim.henigan@gmail.com>
+#
+# Perform a directory diff between commits in the repository using
+# the external diff or merge tool specified in the user's config.
+
+USAGE='[--cached] [--copy-back] [-x|--extcmd=<command>] <commit>{0,2} [-- <path>*]
+
+ --cached Compare to the index rather than the working tree.
+
+ --copy-back Copy files back to the working tree when the diff
+ tool exits (in case they were modified by the
+ user). This option is only valid if the diff
+ compared with the working tree.
+
+ -x=<command>
+ --extcmd=<command> Specify a custom command for viewing diffs.
+ git-diffall ignores the configured defaults and
+ runs $command $LOCAL $REMOTE when this option is
+ specified. Additionally, $BASE is set in the
+ environment.
+'
SUBDIRECTORY_OK=1
. "$(git --exec-path)/git-sh-setup"
-cd_to_toplevel # for the tar below
-pre="${1-HEAD}"
-post="$2"
+TOOL_MODE=diff
+. "$(git --exec-path)/git-mergetool--lib"
+
+merge_tool="$(get_merge_tool)"
+if test -z "$merge_tool"
+then
+ echo "Error: Either the 'diff.tool' or 'merge.tool' option must be set."
+ usage
+fi
-tmp="$(mktemp -d)"
+start_dir=$(pwd)
-cleanup () {
- rm -rf $tmp
+# All the file paths returned by the diff command are relative to the root
+# of the working copy. So if the script is called from a subdirectory, it
+# must switch to the root of working copy before trying to use those paths.
+cdup=$(git rev-parse --show-cdup) &&
+cd "$cdup" || {
+ echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
+ exit 1
}
-trap cleanup EXIT
+# set up temp dir
+tmp=$(perl -e 'use File::Temp qw(tempdir);
+ $t=tempdir("/tmp/git-diffall.XXXXX") or exit(1);
+ print $t') || exit 1
+trap 'rm -rf "$tmp"' EXIT
+
+left=
+right=
+paths=
+dashdash_seen=
+compare_staged=
+merge_base=
+left_dir=
+right_dir=
+diff_tool=
+copy_back=
+
+while test $# != 0
+do
+ case "$1" in
+ -h|--h|--he|--hel|--help)
+ usage
+ ;;
+ --cached)
+ compare_staged=1
+ ;;
+ --copy-back)
+ copy_back=1
+ ;;
+ -x|--e|--ex|--ext|--extc|--extcm|--extcmd)
+ if test $# = 1
+ then
+ echo You must specify the tool for use with --extcmd
+ usage
+ else
+ diff_tool=$2
+ shift
+ fi
+ ;;
+ --)
+ dashdash_seen=1
+ ;;
+ -*)
+ echo Invalid option: "$1"
+ usage
+ ;;
+ *)
+ # could be commit, commit range or path limiter
+ case "$1" in
+ *...*)
+ left=${1%...*}
+ right=${1#*...}
+ merge_base=1
+ ;;
+ *..*)
+ left=${1%..*}
+ right=${1#*..}
+ ;;
+ *)
+ if test -n "$dashdash_seen"
+ then
+ paths="$paths$1 "
+ elif test -z "$left"
+ then
+ left=$1
+ elif test -z "$right"
+ then
+ right=$1
+ else
+ paths="$paths$1 "
+ fi
+ ;;
+ esac
+ ;;
+ esac
+ shift
+done
-mkdir "$tmp"/a "$tmp"/b
+# Determine the set of files which changed
+if test -n "$left" && test -n "$right"
+then
+ left_dir="cmt-$(git rev-parse --short $left)"
+ right_dir="cmt-$(git rev-parse --short $right)"
-if [ -n "$post" ]; then
- git diff --name-only "$pre" "$post" > "$tmp"/filelist
- while read name; do
- mkdir -p "$tmp"/b/"$(dirname "$name")"
- git show "$post":"$name" > "$tmp"/b/"$name"
- done < "$tmp"/filelist
+ if test -n "$compare_staged"
+ then
+ usage
+ elif test -n "$merge_base"
+ then
+ git diff --name-only "$left"..."$right" -- $paths >"$tmp/filelist"
+ else
+ git diff --name-only "$left" "$right" -- $paths >"$tmp/filelist"
+ fi
+elif test -n "$left"
+then
+ left_dir="cmt-$(git rev-parse --short $left)"
+
+ if test -n "$compare_staged"
+ then
+ right_dir="staged"
+ git diff --name-only --cached "$left" -- $paths >"$tmp/filelist"
+ else
+ right_dir="working_tree"
+ git diff --name-only "$left" -- $paths >"$tmp/filelist"
+ fi
else
- git diff --name-only "$pre" > "$tmp"/filelist
- tar -c -T "$tmp"/filelist | (cd "$tmp"/b && tar -x)
+ left_dir="HEAD"
+
+ if test -n "$compare_staged"
+ then
+ right_dir="staged"
+ git diff --name-only --cached -- $paths >"$tmp/filelist"
+ else
+ right_dir="working_tree"
+ git diff --name-only -- $paths >"$tmp/filelist"
+ fi
fi
-while read name; do
- mkdir -p "$tmp"/a/"$(dirname "$name")"
- git show "$pre":"$name" > "$tmp"/a/"$name"
-done < "$tmp"/filelist
-
-cd "$tmp"
-#meld a b
-#diff -ur a b
-tool="$(git-config diff.tool)"
-if [ -n "$tool" ]; then
- "$tool" a b
+# Exit immediately if there are no diffs
+if test ! -s "$tmp/filelist"
+then
+ exit 0
+fi
+
+if test -n "$copy_back" && test "$right_dir" != "working_tree"
+then
+ echo "--copy-back is only valid when diff includes the working tree."
+ exit 1
+fi
+
+# Create the named tmp directories that will hold the files to be compared
+mkdir -p "$tmp/$left_dir" "$tmp/$right_dir"
+
+# Populate the tmp/right_dir directory with the files to be compared
+while read name
+do
+ if test -n "$right"
+ then
+ ls_list=$(git ls-tree $right "$name")
+ if test -n "$ls_list"
+ then
+ mkdir -p "$tmp/$right_dir/$(dirname "$name")"
+ git show "$right":"$name" >"$tmp/$right_dir/$name" || true
+ fi
+ elif test -n "$compare_staged"
+ then
+ ls_list=$(git ls-files -- "$name")
+ if test -n "$ls_list"
+ then
+ mkdir -p "$tmp/$right_dir/$(dirname "$name")"
+ git show :"$name" >"$tmp/$right_dir/$name"
+ fi
+ else
+ if test -e "$name"
+ then
+ mkdir -p "$tmp/$right_dir/$(dirname "$name")"
+ cp "$name" "$tmp/$right_dir/$name"
+ fi
+ fi
+done < "$tmp/filelist"
+
+# Populate the tmp/left_dir directory with the files to be compared
+while read name
+do
+ if test -n "$left"
+ then
+ ls_list=$(git ls-tree $left "$name")
+ if test -n "$ls_list"
+ then
+ mkdir -p "$tmp/$left_dir/$(dirname "$name")"
+ git show "$left":"$name" >"$tmp/$left_dir/$name" || true
+ fi
+ else
+ if test -n "$compare_staged"
+ then
+ ls_list=$(git ls-tree HEAD "$name")
+ if test -n "$ls_list"
+ then
+ mkdir -p "$tmp/$left_dir/$(dirname "$name")"
+ git show HEAD:"$name" >"$tmp/$left_dir/$name"
+ fi
+ else
+ mkdir -p "$tmp/$left_dir/$(dirname "$name")"
+ git show :"$name" >"$tmp/$left_dir/$name"
+ fi
+ fi
+done < "$tmp/filelist"
+
+LOCAL="$tmp/$left_dir"
+REMOTE="$tmp/$right_dir"
+
+if test -n "$diff_tool"
+then
+ export BASE
+ eval $diff_tool '"$LOCAL"' '"$REMOTE"'
else
- diff -urN a b
+ run_merge_tool "$merge_tool" false
+fi
+
+# Copy files back to the working dir, if requested
+if test -n "$copy_back" && test "$right_dir" = "working_tree"
+then
+ cd "$start_dir"
+ git_top_dir=$(git rev-parse --show-toplevel)
+ find "$tmp/$right_dir" -type f |
+ while read file
+ do
+ cp "$file" "$git_top_dir/${file#$tmp/$right_dir/}"
+ done
fi
git-diffall \- Use a visual diff tool to show all differences
.SH SYNOPSIS
-\fBgit-diffall\fR [\fIPRE\fR] [\fIPOST\fR]
+\fBgit-diffall\fR [\fI--cached\fR] [\fI--copy-back\fR]
+ [\fI-x|--extcmd=<command>\fR] <commit>{0,2} [\fI-- <path>*\fR]
.SH "DESCRIPTION"
.PP
-\fBgit-diffall\fR performs a visual diff using kdiff3 between PRE and POST
-of the current project. No arguments will show the differences between the
-working directory and HEAD. If in the git config diff.tool is set, this
-program is passed the name of the two temporary directories containing the
-changed files of each revision. If diff.tool is not defined, the fall-back
-is to diff.
+\fBgit-diffall\fR performs a diff using the configured diff.tool or merge.tool.
+
+ --cached Compare to the index rather than the working tree.
+
+ --copy-back Copy files back to the working tree when the diff
+ tool exits (in case they were modified by the
+ user). This option is only valid if the diff
+ compared with the working tree.
+
+ -x=<command>
+ --extcmd=<command>
+ Specify a custom command for viewing diffs.
+ git-diffall ignores the configured defaults and
+ runs $command $LOCAL $REMOTE when this option is
+ specified. Additionally, $BASE is set in the
+ environment.
+
+Thanks to Tim Henigan <tim.henigan@gmail.com> who created a newer version now
+released with git contribs.
Thanks to Thomas Rast for publishing this script online:
http://thread.gmane.org/gmane.comp.version-control.git/124807
projects / git-utils.git / commitdiff