hgeditor
author Matt Mackall <mpm@selenic.com>
Wed, 05 Oct 2005 19:25:45 -0700
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#!/bin/sh
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#
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# This is an example of using HGEDITOR to automate the signing of
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# commits and so on.
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# change this to one to turn on GPG support
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SIGN=0
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# If you want to pass your favourite editor some other parameters
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# only for Mercurial, modify this:
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case "${EDITOR}" in
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    "")
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        EDITOR="vi"
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        ;;
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    emacs)
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        EDITOR="$EDITOR -nw"
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        ;;
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    gvim|vim)
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        EDITOR="$EDITOR -f -o"
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        ;;
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esac
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HGTMP=""
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cleanup_exit() {
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    rm -rf "$HGTMP"
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}
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# Remove temporary files even if we get interrupted
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trap "cleanup_exit" 0 # normal exit
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trap "exit 255" 1 2 3 6 15 # HUP INT QUIT ABRT TERM
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HGTMP="${TMPDIR-/tmp}/hgeditor.$RANDOM.$RANDOM.$RANDOM.$$"
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(umask 077 && mkdir "$HGTMP") || {
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    echo "Could not create temporary directory! Exiting." 1>&2
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    exit 1
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}
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(
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    cd "`hg root`"
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    grep '^HG: changed' "$1" | cut -b 13- | while read changed; do
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        hg diff "$changed" >> "$HGTMP/diff"
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    done
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)
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echo > "$HGTMP/msg"
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if [ "$SIGN" == "1" ]; then
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    MANIFEST=`grep '^HG: manifest hash' "$1" | cut -b 19-`
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    echo -e "\nmanifest hash: $MANIFEST" >> "$HGTMP/msg"
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fi
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grep -vE '^(HG: manifest hash .*)?$' "$1" >> "$HGTMP/msg"
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CHECKSUM=`md5sum "$HGTMP/msg"`
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if [ -s "$HGTMP/diff" ]; then
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    $EDITOR "$HGTMP/msg" "$HGTMP/diff" || exit $?
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else
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    $EDITOR "$HGTMP/msg" || exit $?
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fi
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echo "$CHECKSUM" | md5sum -c >/dev/null 2>&1 && exit 13
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if [ "$SIGN" == "1" ]; then
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    {
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        head -n 1 "$HGTMP/msg"
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        echo
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        grep -v "^HG:" "$HGTMP/msg" | gpg -t -a -u "${HGUSER}" --clearsign
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    } > "$HGTMP/msg.gpg" && mv "$HGTMP/msg.gpg" "$1"
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else
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    mv "$HGTMP/msg" "$1"
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fi
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exit $?