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https://github.com/git/git
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81 lines
1.4 KiB
Bash
81 lines
1.4 KiB
Bash
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#!/bin/sh
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#
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# Copyright (c) 2005 Linus Torvalds
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#
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# Resolve two trees, 'stupid merge'.
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# The first parameters up to -- are merge bases; the rest are heads.
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bases= head= remotes= sep_seen=
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for arg
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do
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case ",$sep_seen,$head,$arg," in
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*,--,)
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sep_seen=yes
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;;
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,yes,,*)
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head=$arg
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;;
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,yes,*)
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remotes="$remotes$arg "
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;;
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*)
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bases="$bases$arg "
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;;
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esac
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done
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# Give up if we are given more than two remotes -- not handling octopus.
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case "$remotes" in
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?*' '?*)
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exit 2 ;;
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esac
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# Find an optimum merge base if there are more than one candidates.
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case "$bases" in
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?*' '?*)
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echo "Trying to find the optimum merge base."
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G=.tmp-index$$
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best=
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best_cnt=-1
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for c in $bases
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do
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rm -f $G
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GIT_INDEX_FILE=$G git-read-tree -m $c $head $remotes \
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2>/dev/null || continue
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# Count the paths that are unmerged.
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cnt=`GIT_INDEX_FILE=$G git-ls-files --unmerged | wc -l`
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if test $best_cnt -le 0 -o $cnt -le $best_cnt
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then
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best=$c
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best_cnt=$cnt
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if test "$best_cnt" -eq 0
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then
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# Cannot do any better than all trivial merge.
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break
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fi
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fi
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done
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rm -f $G
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common="$best"
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;;
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*)
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common="$bases"
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;;
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esac
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git-update-index --refresh 2>/dev/null
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git-read-tree -u -m $common $head $remotes || exit 2
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echo "Trying simple merge."
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if result_tree=$(git-write-tree 2>/dev/null)
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then
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exit 0
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else
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echo "Simple merge failed, trying Automatic merge."
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if git-merge-index -o git-merge-one-file -a
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then
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exit 0
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else
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exit 1
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fi
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fi
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