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https://github.com/git/git.git
synced 2024-11-06 01:03:02 +01:00
6b38a402e9
We codify the following different heads (in addition to the main "HEAD", which points to the current branch, of course): - FETCH_HEAD Populated by "git fetch" - ORIG_HEAD The old HEAD before a "git pull/resolve" (successful or not) - LAST_MERGE The HEAD we're currently merging in "git pull/resolve" - MERGE_HEAD The previous head of a unresolved "git pull", which gets committed by a "git commit" after manually resolving the result We used to have "MERGE_HEAD" be populated directly by the fetch, and we removed ORIG_HEAD and LAST_MERGE too aggressively.
69 lines
1.7 KiB
Bash
Executable file
69 lines
1.7 KiB
Bash
Executable file
#!/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.
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#
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head=$(git-rev-parse --revs-only "$1")
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merge=$(git-rev-parse --revs-only "$2")
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merge_repo="$3"
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: ${GIT_DIR=.git}
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: ${GIT_OBJECT_DIRECTORY="${SHA1_FILE_DIRECTORY-"$GIT_DIR/objects"}"}
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dropheads() {
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rm -f -- "$GIT_DIR/MERGE_HEAD" \
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"$GIT_DIR/LAST_MERGE" || exit 1
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}
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#
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# The remote name is just used for the message,
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# but we do want it.
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#
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if [ -z "$head" -o -z "$merge" -o -z "$merge_repo" ]; then
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echo "git-resolve-script <head> <remote> <merge-repo-name>"
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exit 1
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fi
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dropheads
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echo $head > "$GIT_DIR"/ORIG_HEAD
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echo $merge > "$GIT_DIR"/LAST_MERGE
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common=$(git-merge-base $head $merge)
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if [ -z "$common" ]; then
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echo "Unable to find common commit between" $merge $head
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exit 1
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fi
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if [ "$common" == "$merge" ]; then
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echo "Already up-to-date. Yeeah!"
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dropheads
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exit 0
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fi
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if [ "$common" == "$head" ]; then
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echo "Updating from $head to $merge."
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git-read-tree -u -m $head $merge || exit 1
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echo $merge > "$GIT_DIR"/HEAD
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git-diff-tree -p $head $merge | git-apply --stat
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dropheads
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exit 0
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fi
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echo "Trying to merge $merge into $head"
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git-read-tree -u -m $common $head $merge || exit 1
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merge_msg="Merge $merge_repo"
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result_tree=$(git-write-tree 2> /dev/null)
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if [ $? -ne 0 ]; then
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echo "Simple merge failed, trying Automatic merge"
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git-merge-cache -o git-merge-one-file-script -a
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if [ $? -ne 0 ]; then
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echo $merge > "$GIT_DIR"/MERGE_HEAD
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echo "Automatic merge failed, fix up by hand"
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exit 1
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fi
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result_tree=$(git-write-tree) || exit 1
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fi
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result_commit=$(echo "$merge_msg" | git-commit-tree $result_tree -p $head -p $merge)
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echo "Committed merge $result_commit"
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echo $result_commit > "$GIT_DIR"/HEAD
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git-diff-tree -p $head $result_commit | git-apply --stat
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dropheads
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