annotate hgeditor @ 822:b678e6d4f92d

Attempt to yield names in sorted order when walking.

This is an improvement in behaviour, but the walk and changes code still
has some flaws that make sorted name presentation difficult:

- changes returns tuples of names, instead of a sorted list of (name,
  status) pairs.

- walk yields deleted names after all others.

#!/bin/sh
#
# This is an example of using HGEDITOR to automate the signing of
# commits and so on.

# change this to one to turn on GPG support
SIGN=0

# If you want to pass your favourite editor some other parameters
# only for Mercurial, modify this:
case "${EDITOR}" in
    "")
        EDITOR="vi"
        ;;
    emacs)
        EDITOR="$EDITOR -nw"
        ;;
    gvim|vim)
        EDITOR="$EDITOR -f -o"
        ;;
esac


HGTMP=""
cleanup_exit() {
    rm -rf "$HGTMP"
    exit $1
}

# Remove temporary files even if we get interrupted
trap "cleanup_exit 255" TERM KILL INT QUIT ABRT

HGTMP="${TMPDIR-/tmp}/hgeditor.$RANDOM.$RANDOM.$RANDOM.$$"
(umask 077 && mkdir "$HGTMP") || {
    echo "Could not create temporary directory! Exiting." 1>&2
    exit 1
}

(
    cd "`hg root`"
    grep '^HG: changed' "$1" | cut -b 13- | while read changed; do
        hg diff "$changed" >> "$HGTMP/diff"
    done
)

echo > "$HGTMP/msg"
if [ "$SIGN" == "1" ]; then
    MANIFEST=`grep '^HG: manifest hash' "$1" | cut -b 19-`
    echo -e "\nmanifest hash: $MANIFEST" >> "$HGTMP/msg"
fi
grep -vE '^(HG: manifest hash .*)?$' "$1" >> "$HGTMP/msg"

CHECKSUM=`md5sum "$HGTMP/msg"`
$EDITOR "$HGTMP/msg" "$HGTMP/diff" || cleanup_exit $?
echo "$CHECKSUM" | md5sum -c >/dev/null 2>&1 && cleanup_exit 13

if [ "$SIGN" == "1" ]; then
    {
        head -n 1 "$HGTMP/msg"
        echo
        grep -v "^HG:" "$HGTMP/msg" | gpg -t -a -u "${HGUSER}" --clearsign
    } > "$HGTMP/msg.gpg" && mv "$HGTMP/msg.gpg" "$1"
else
    mv "$HGTMP/msg" "$1"
fi

cleanup_exit $?