Mercurial > hg > mercurial-crew-with-dirclash

annotate hgmerge @ 862:d70c1c31fd45

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Fix 3-way-merge of original parent, workdir and new parent. The dirstate has to match what is in the repository (what would be checked out with 'hg update -C'), because the resulting file may be identical to the new parent, or it may be completely different. Previously the dirstate wasn't updated, so if you changed the file to look like the original parent, it might be considered unmodified relative to the new parent.
author Thomas Arendsen Hein <thomas@intevation.de>
date Wed, 10 Aug 2005 06:47:46 +0100
parents 9c918287d10b
children 696851b1bba9
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1 #!/bin/sh
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2 #
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3 # hgmerge - default merge helper for Mercurial
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4 #
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5 # This tries to find a way to do three-way merge on the current system.
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6 # The result ought to end up in $1.
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7
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8 set -e # bail out quickly on failure
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9
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10 LOCAL="$1"
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11 BASE="$2"
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12 OTHER="$3"
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13
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14 if [ -z "$EDITOR" ]; then
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15 EDITOR="vi"
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16 fi
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17
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18 # Back up our file
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19 cp "$LOCAL" "$LOCAL.orig"
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20
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21 # Attempt to do a non-interactive merge
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22 if type merge > /dev/null 2>&1; then
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23 merge "$LOCAL" "$BASE" "$OTHER" 2> /dev/null && exit 0
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24 cp "$LOCAL.orig" "$LOCAL"
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25 elif type diff3 > /dev/null 2>&1; then
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26 diff3 -m "$LOCAL.orig" "$BASE" "$OTHER" > "$LOCAL" && exit 0
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27 cp "$LOCAL.orig" "$LOCAL"
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28 fi
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29
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30 if [ -n "$DISPLAY" ]; then
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31 # try using kdiff3, which is fairly nice
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32 if type kdiff3 > /dev/null 2>&1; then
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33 kdiff3 --auto "$BASE" "$LOCAL" "$OTHER" -o "$LOCAL" || exit 1
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34 exit 0
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35 fi
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36
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37 # try using tkdiff, which is a bit less sophisticated
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38 if type tkdiff > /dev/null 2>&1; then
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39 tkdiff "$LOCAL" "$OTHER" -a "$BASE" -o "$LOCAL" || exit 1
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40 exit 0
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41 fi
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42 fi
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43
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44 # Attempt to do a merge with $EDITOR
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45 if type merge > /dev/null 2>&1; then
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46 echo "conflicts detected in $LOCAL"
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47 merge "$LOCAL" "$BASE" "$OTHER" 2>/dev/null || $EDITOR "$LOCAL"
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48 exit 0
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49 fi
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50
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51 if type diff3 > /dev/null 2>&1; then
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52 echo "conflicts detected in $LOCAL"
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53 diff3 -m "$LOCAL.orig" "$BASE" "$OTHER" > "$LOCAL" || $EDITOR "$LOCAL"
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54 exit 0
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55 fi
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56
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57 HGTMP=""
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58 cleanup_exit() {
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59 rm -rf "$HGTMP"
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60 }
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61
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62 # attempt to manually merge with diff and patch
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63 if type diff > /dev/null 2>&1 && type patch > /dev/null 2>&1; then
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64 # Remove temporary files even if we get interrupted
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65 trap "cleanup_exit" 0 # normal exit
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66 trap "exit 1" 1 2 3 6 15 # HUP INT QUIT ABRT TERM
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67
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68 HGTMP="${TMPDIR-/tmp}/hgmerge.$RANDOM.$RANDOM.$RANDOM.$$"
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69 (umask 077 && mkdir "$HGTMP") || {
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70 echo "Could not create temporary directory! Exiting." 1>&2
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71 exit 1
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72 }
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73
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74 diff -u "$BASE" "$OTHER" > "$HGTMP/diff"
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75 if patch "$LOCAL" < "$HGTMP/diff"; then
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76 exit 0
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77 else
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78 # If rejects are empty after using the editor, merge was ok
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79 $EDITOR "$LOCAL" "$LOCAL.rej" && test -s "$LOCAL.rej" || exit 0
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80 fi
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81 exit 1
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82 fi
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83
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84 echo "hgmerge: unable to find merge, tkdiff, kdiff3, or diff+patch!"
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85 exit 1