git-resolve-script

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2005 Linus Torvalds
   4 #
   5 # Resolve two trees.
   6 #
   7 head=$(git-rev-parse --revs-only "$1")
   8 merge=$(git-rev-parse --revs-only "$2")
   9 merge_repo="$3"
  10
  11 : ${GIT_DIR=.git}
  12 : ${GIT_OBJECT_DIRECTORY="${SHA1_FILE_DIRECTORY-"$GIT_DIR/objects"}"}
  13
  14 dropheads() {
  15         rm -f -- "$GIT_DIR/MERGE_HEAD" \
  16                 "$GIT_DIR/LAST_MERGE" || exit 1
  17 }
  18
  19 #
  20 # The remote name is just used for the message,
  21 # but we do want it.
  22 #
  23 if [ -z "$head" -o -z "$merge" -o -z "$merge_repo" ]; then
  24         echo "git-resolve-script <head> <remote> <merge-repo-name>"
  25         exit 1
  26 fi
  27
  28 dropheads
  29 echo $head > "$GIT_DIR"/ORIG_HEAD
  30 echo $merge > "$GIT_DIR"/LAST_MERGE
  31
  32 common=$(git-merge-base $head $merge)
  33 if [ -z "$common" ]; then
  34         echo "Unable to find common commit between" $merge $head
  35         exit 1
  36 fi
  37
  38 if [ "$common" == "$merge" ]; then
  39         echo "Already up-to-date. Yeeah!"
  40         dropheads
  41         exit 0
  42 fi
  43 if [ "$common" == "$head" ]; then
  44         echo "Updating from $head to $merge."
  45         git-read-tree -u -m $head $merge || exit 1
  46         echo $merge > "$GIT_DIR"/HEAD
  47         git-diff-tree -p $head $merge | git-apply --stat
  48         dropheads
  49         exit 0
  50 fi
  51 echo "Trying to merge $merge into $head"
  52 git-read-tree -u -m $common $head $merge || exit 1
  53 merge_msg="Merge $merge_repo"
  54 result_tree=$(git-write-tree  2> /dev/null)
  55 if [ $? -ne 0 ]; then
  56         echo "Simple merge failed, trying Automatic merge"
  57         git-merge-cache -o git-merge-one-file-script -a
  58         if [ $? -ne 0 ]; then
  59                 echo $merge > "$GIT_DIR"/MERGE_HEAD
  60                 echo "Automatic merge failed, fix up by hand"
  61                 exit 1
  62         fi
  63         result_tree=$(git-write-tree) || exit 1
  64 fi
  65 result_commit=$(echo "$merge_msg" | git-commit-tree $result_tree -p $head -p $merge)
  66 echo "Committed merge $result_commit"
  67 echo $result_commit > "$GIT_DIR"/HEAD
  68 git-diff-tree -p $head $result_commit | git-apply --stat
  69 dropheads