hgmerge
author mason@suse.com
Tue, 04 Apr 2006 16:38:43 -0400
changeset 2073 1e6745f78989
parent 1885 c4d577262d00
child 2051 6a03cff2b0f5
permissions -rwxr-xr-x
Implement data inlined with the index file This patch allows you to optionally inline data bytes with the revlog index file. It saves considerable space and checkout time by reducing the number of inodes, wasted partial blocks and system calls. To use the inline data add this to your .hgrc [revlog] # inline data only works with revlogng format=1 # inline is the only valid flag right now. flags=inline
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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#!/bin/sh
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#
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# hgmerge - default merge helper for Mercurial
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#
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# This tries to find a way to do three-way merge on the current system.
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# The result ought to end up in $1.  Script is run in root directory of
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# repository.
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#
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# Environment variables set by Mercurial:
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# HG_FILE            name of file within repo
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# HG_MY_NODE         revision being merged
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# HG_OTHER_NODE      revision being merged
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set -e # bail out quickly on failure
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LOCAL="$1"
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BASE="$2"
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OTHER="$3"
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if [ -z "$EDITOR" ]; then
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    EDITOR="vi"
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fi
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# find decent versions of our utilities, insisting on the GNU versions where we
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# need to
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MERGE="merge"
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DIFF3="gdiff3"
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DIFF="gdiff"
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PATCH="gpatch"
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type "$MERGE" >/dev/null 2>&1 || MERGE=
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type "$DIFF3" >/dev/null 2>&1 || DIFF3="diff3"
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$DIFF3 --version >/dev/null 2>&1 || DIFF3=
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type "$DIFF"  >/dev/null 2>&1 || DIFF="diff"
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type "$DIFF"  >/dev/null 2>&1 || DIFF=
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type "$PATCH" >/dev/null 2>&1 || PATCH="patch"
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type "$PATCH" >/dev/null 2>&1 || PATCH=
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# find optional visual utilities
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FILEMERGE="/Developer/Applications/Utilities/FileMerge.app/Contents/MacOS/FileMerge"
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KDIFF3="kdiff3"
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TKDIFF="tkdiff"
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MELD="meld"
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type "$FILEMERGE" >/dev/null 2>&1 || FILEMERGE=
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type "$KDIFF3"    >/dev/null 2>&1 || KDIFF3=
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type "$TKDIFF"    >/dev/null 2>&1 || TKDIFF=
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type "$MELD"      >/dev/null 2>&1 || MELD=
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# random part of names
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RAND="$RANDOM$RANDOM"
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# temporary directory for diff+patch merge
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HGTMP="${TMPDIR-/tmp}/hgmerge.$RAND"
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# backup file
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BACKUP="$LOCAL.orig.$RAND"
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# file used to test for file change
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CHGTEST="$LOCAL.chg.$RAND"
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# put all your required cleanup here
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cleanup() {
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    rm -f "$BACKUP" "$CHGTEST"
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    rm -rf "$HGTMP"
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}
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# functions concerning program exit
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success() {
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    cleanup
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    exit 0
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}
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failure() {
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    echo "merge failed" 1>&2
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    mv "$BACKUP" "$LOCAL"
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    cleanup
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    exit 1
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}
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# Ask if the merge was successful
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ask_if_merged() {
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    while true; do
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        echo "$LOCAL seems unchanged."
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        echo "Was the merge successful? [y/n]"
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        read answer
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        case "$answer" in
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            y*|Y*) success;;
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            n*|N*) failure;;
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        esac
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    done
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}
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# Clean up when interrupted
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trap "failure" 1 2 3 6 15 # HUP INT QUIT ABRT TERM
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# Back up our file (and try hard to keep the mtime unchanged)
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mv "$LOCAL" "$BACKUP"
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cp "$BACKUP" "$LOCAL"
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# Attempt to do a non-interactive merge
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if [ -n "$MERGE" -o -n "$DIFF3" ]; then
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    if [ -n "$MERGE" ]; then
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        $MERGE "$LOCAL" "$BASE" "$OTHER" 2> /dev/null && success
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    elif [ -n "$DIFF3" ]; then
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        $DIFF3 -m "$BACKUP" "$BASE" "$OTHER" > "$LOCAL" && success
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    fi
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    if [ $? -gt 1 ]; then
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        echo "automatic merge failed! Exiting." 1>&2
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        failure
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    fi
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fi
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# on MacOS X try FileMerge.app, shipped with Apple's developer tools
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if [ -n "$FILEMERGE" ]; then
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    cp "$BACKUP" "$LOCAL"
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    cp "$BACKUP" "$CHGTEST"
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    # filemerge prefers the right by default
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    $FILEMERGE -left "$OTHER" -right "$LOCAL" -ancestor "$BASE" -merge "$LOCAL"
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    [ $? -ne 0 ] && echo "FileMerge failed to launch" && failure
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    test "$LOCAL" -nt "$CHGTEST" && success || ask_if_merged
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fi
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if [ -n "$DISPLAY" ]; then
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    # try using kdiff3, which is fairly nice
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    if [ -n "$KDIFF3" ]; then
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        $KDIFF3 --auto "$BASE" "$BACKUP" "$OTHER" -o "$LOCAL" || failure
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        success
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    fi
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    # try using tkdiff, which is a bit less sophisticated
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    if [ -n "$TKDIFF" ]; then
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        $TKDIFF "$BACKUP" "$OTHER" -a "$BASE" -o "$LOCAL" || failure
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        success
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    fi
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    if [ -n "$MELD" ]; then
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        cp "$BACKUP" "$CHGTEST"
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        # protect our feet - meld allows us to save to the left file
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        cp "$BACKUP" "$LOCAL.tmp.$RAND"
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        # Meld doesn't have automatic merging, so to reduce intervention
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        # use the file with conflicts
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        $MELD "$LOCAL.tmp.$RAND" "$LOCAL" "$OTHER" || failure
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        # Also it doesn't return good error code
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        test "$LOCAL" -nt "$CHGTEST" && success || ask_if_merged
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    fi
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fi
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# Attempt to do a merge with $EDITOR
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if [ -n "$MERGE" -o -n "$DIFF3" ]; then
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    echo "conflicts detected in $LOCAL"
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    cp "$BACKUP" "$CHGTEST"
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    $EDITOR "$LOCAL" || failure
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    # Some editors do not return meaningful error codes
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    # Do not take any chances
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    test "$LOCAL" -nt "$CHGTEST" && success || ask_if_merged
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fi
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# attempt to manually merge with diff and patch
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if [ -n "$DIFF" -a -n "$PATCH" ]; then
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   161
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    (umask 077 && mkdir "$HGTMP") || {
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        echo "Could not create temporary directory $HGTMP" 1>&2
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        failure
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    }
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    $DIFF -u "$BASE" "$OTHER" > "$HGTMP/diff" || :
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    if $PATCH "$LOCAL" < "$HGTMP/diff"; then
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        success
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    else
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        # If rejects are empty after using the editor, merge was ok
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        $EDITOR "$LOCAL" "$LOCAL.rej" || failure
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        test -s "$LOCAL.rej" || success
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    fi
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    failure
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fi
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echo
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echo "hgmerge: unable to find any merge utility!"
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echo "supported programs:"
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echo "merge, FileMerge, tkdiff, kdiff3, meld, diff+patch"
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echo
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failure