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git/git-external-diff-script
Linus Torvalds 40d8cfe411 Trivial git script fixups
Fix permissions, and add trivial "reset" and "add" scripts.

The "reset" script just resets the index back to head, while the "add"
script is just a crutch for people used to do "cvs add".
2005-06-14 18:56:05 -07:00

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#!/bin/sh
# Copyright (C) 2005 Junio C Hamano
#
# This script is designed to emulate what the built-in diff driver
# does when set as GIT_EXTERNAL_SCRIPT.
case "$#" in
1)
echo "* Unmerged path $1"
exit 0 ;;
*)
name1="$1" tmp1="$2" hex1="$3" mode1="$4" tmp2="$5" hex2="$6" mode2="$7"
case "$#" in
7)
name2="$name1" ;;
9)
name2="$8" xfrm_msg="$9" ;;
esac ;;
esac
show_create () {
name_="$1" tmp_="$2" hex_="$3" mode_="$4"
echo "diff --git a/$name_ b/$name_"
echo "new file mode $mode_"
diff ${GIT_DIFF_OPTS-'-pu'} -L /dev/null -L "b/$name_" /dev/null "$tmp_"
}
show_delete () {
name_="$1" tmp_="$2" hex_="$3" mode_="$4"
echo "diff --git a/$name_ b/$name_"
echo "deleted file mode $mode_"
diff ${GIT_DIFF_OPTS-'-pu'} -L "a/$name_" -L /dev/null "$tmp_" /dev/null
}
case "$mode1" in
120*) type1=l ;;
100*) type1=f ;;
.) show_create "$name2" "$tmp2" "$hex2" "$mode2"
exit 0 ;;
esac
case "$mode2" in
120*) type2=l ;;
100*) type2=f ;;
.) show_delete "$name1" "$tmp1" "$hex1" "$mode1"
exit 0 ;;
esac
if test "$type1" != "$type2"
then
show_delete "$name1" "$tmp1" "$hex1" "$mode1"
show_create "$name2" "$tmp2" "$hex2" "$mode2"
exit 0
fi
echo diff --git "a/$name1" "b/$name2"
if test "$mode1" != "$mode2"
then
echo "old mode $mode1"
echo "new mode $mode2"
if test "$xfrm_msg" != ""
then
echo "$xfrm_msg"
fi
fi
diff ${GIT_DIFF_OPTS-'-pu'} -L "a/$name1" -L "b/$name2" "$tmp1" "$tmp2"
exit 0