hgeditor
author Alexis S. L. Carvalho <alexis@cecm.usp.br>
Sat, 19 Jan 2008 18:01:16 -0200
changeset 5909 f45f7390c1c5
parent 4687 b5bbfa18daf7
child 11190 43337076ba92
permissions -rwxr-xr-x
strip: calculate list of extra nodes to save and pass it to changegroupsubset When we remove revision N from the repository, all revisions >= N are affected: either it's a descendant from N and will also be removed, or it's not a descendant of N and will be renumbered. As a consequence, we have to (at least temporarily) remove all filelog and manifest revisions that have a linkrev >= N, readding some of them later. Unfortunately, it's possible to have a revlog with two revisions r1 and r2 such that r1 < r2, but linkrev(r1) > linkrev(r2). If we try to strip revision linkrev(r1) from the repository, we'll also lose revision r2 when we truncate this revlog. We already use changegroupsubset to create a temporary changegroup containing the revisions that have to be restored, but that function is unable to detect that we also wanted to save the r2 in the case above. So we manually calculate these extra nodes and pass it to changegroupsubset. This should fix issue764.
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#!/bin/sh
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#
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# This is an example of using HGEDITOR to create of diff to review the
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# changes while commiting.
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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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    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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cat "$1" > "$HGTMP/msg"
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MD5=$(which md5sum 2>/dev/null) || \
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    MD5=$(which md5 2>/dev/null)
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[ -x "${MD5}" ] && CHECKSUM=`${MD5} "$HGTMP/msg"`
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if [ -s "$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 $?
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fi
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[ -x "${MD5}" ] && (echo "$CHECKSUM" | ${MD5} -c >/dev/null 2>&1 && exit 13)
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mv "$HGTMP/msg" "$1"
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exit $?