view hgeditor @ 39849:d3d4b4b5f725

localrepo: support writing shared file (API)

Now that we can create a shared repository via creation options, we
can handle other special actions related to share at repo creation time
as well.

One of the things we do after creating a shared repository is write
out a .hg/shared file containing the list of additional things to
share. Of which only "bookmarks" is supported.

We add a creation option to hold the set of additional items to
share. If items are defined, we write out the .hg/shared file at
repo creation time.

As part of this, we no longer hold the repo lock when writing the
file. I'm pretty sure we don't care about the tiny race condition
window. I'm also pretty sure the reason we used the lock was because
the vfs auditor on the repo instance complained otherwise. Since the
repo creation code doesn't have an audited vfs, we don't need to
appease it.

Because we no longer need to tell the post share hook what items
are shared, the "bookmarks" argument to that function has been
dropped, incurring an API change.

Differential Revision: https://phab.mercurial-scm.org/D4708

#!/bin/sh
#
# This is an example of using HGEDITOR to create of diff to review the
# changes while committing.

# 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"
}

# Remove temporary files even if we get interrupted
trap "cleanup_exit" 0 # normal exit
trap "exit 255" HUP INT QUIT ABRT TERM

HGTMP=$(mktemp -d ${TMPDIR-/tmp}/hgeditor.XXXXXX)
[ x$HGTMP != x -a -d $HGTMP ] || {
  echo "Could not create temporary directory! Exiting." 1>&2
  exit 1
}

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

cat "$1" > "$HGTMP/msg"

MD5=$(which md5sum 2>/dev/null) || \
    MD5=$(which md5 2>/dev/null)
[ -x "${MD5}" ] && CHECKSUM=`${MD5} "$HGTMP/msg"`
if [ -s "$HGTMP/diff" ]; then
    $EDITOR "$HGTMP/msg" "$HGTMP/diff" || exit $?
else
    $EDITOR "$HGTMP/msg" || exit $?
fi
[ -x "${MD5}" ] && (echo "$CHECKSUM" | ${MD5} -c >/dev/null 2>&1 && exit 13)

mv "$HGTMP/msg" "$1"

exit $?