sys/src/cmd/hg/hgeditor

   1 #!/bin/sh
   2 #
   3 # This is an example of using HGEDITOR to create of diff to review the
   4 # changes while commiting.
   5
   6 # If you want to pass your favourite editor some other parameters
   7 # only for Mercurial, modify this:
   8 case "${EDITOR}" in
   9     "")
  10         EDITOR="vi"
  11         ;;
  12     emacs)
  13         EDITOR="$EDITOR -nw"
  14         ;;
  15     gvim|vim)
  16         EDITOR="$EDITOR -f -o"
  17         ;;
  18 esac
  19
  20
  21 HGTMP=""
  22 cleanup_exit() {
  23     rm -rf "$HGTMP"
  24 }
  25
  26 # Remove temporary files even if we get interrupted
  27 trap "cleanup_exit" 0 # normal exit
  28 trap "exit 255" 1 2 3 6 15 # HUP INT QUIT ABRT TERM
  29
  30 HGTMP="${TMPDIR-/tmp}/hgeditor.$RANDOM.$RANDOM.$RANDOM.$$"
  31 (umask 077 && mkdir "$HGTMP") || {
  32     echo "Could not create temporary directory! Exiting." 1>&2
  33     exit 1
  34 }
  35
  36 (
  37     grep '^HG: changed' "$1" | cut -b 13- | while read changed; do
  38         "$HG" diff "$changed" >> "$HGTMP/diff"
  39     done
  40 )
  41
  42 cat "$1" > "$HGTMP/msg"
  43
  44 MD5=$(which md5sum 2>/dev/null) || \
  45     MD5=$(which md5 2>/dev/null)
  46 [ -x "${MD5}" ] && CHECKSUM=`${MD5} "$HGTMP/msg"`
  47 if [ -s "$HGTMP/diff" ]; then
  48     $EDITOR "$HGTMP/msg" "$HGTMP/diff" || exit $?
  49 else
  50     $EDITOR "$HGTMP/msg" || exit $?
  51 fi
  52 [ -x "${MD5}" ] && (echo "$CHECKSUM" | ${MD5} -c >/dev/null 2>&1 && exit 13)
  53
  54 mv "$HGTMP/msg" "$1"
  55
  56 exit $?