#!/bin/sh
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"
TOOL_MODE=diff
. "$(git --exec-path)/git-mergetool--lib"
merge_tool="$(get_merge_tool)"
if test -z "$merge_tool"
then
echo "Error: Either the 'diff.tool' or 'merge.tool' option must be set."
usage
fi
start_dir=$(pwd)
cdup=$(git rev-parse --show-cdup) &&
cd "$cdup" || {
echo >&2 "Cannot chdir to $cdup, the toplevel of the working tree"
exit 1
}
tmp=$(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 $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 $ 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
;;
*)
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$1 "
fi
;;
esac
;;
esac
shift
done
if test -n "$left" && test -n "$right"
then
left_dir="cmt-$(git rev-parse --short $left)"
right_dir="cmt-$(git rev-parse --short $right)"
if test -n "$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
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
if test ! -s "$tmp/filelist"
then
exit 0
fi
if test -n "$copy_back" && test "$right_dir" != "working_tree"
then
echo "--copy-back is only valid when diff includes the working tree."
exit 1
fi
mkdir -p "$tmp/$left_dir" "$tmp/$right_dir"
while read name
do
if test -n "$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"
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"' '"$REMOTE"'
else
run_merge_tool "$merge_tool" false
fi
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