Andrew's git - gitweb.git/blob - git-merge-stupid.sh

   1#!/bin/sh
   2#
   3# Copyright (c) 2005 Linus Torvalds
   4#
   5# Resolve two trees, 'stupid merge'.
   6
   7# The first parameters up to -- are merge bases; the rest are heads.
   8bases= head= remotes= sep_seen=
   9for arg
  10do
  11        case ",$sep_seen,$head,$arg," in
  12        *,--,)
  13                sep_seen=yes
  14                ;;
  15        ,yes,,*)
  16                head=$arg
  17                ;;
  18        ,yes,*)
  19                remotes="$remotes$arg "
  20                ;;
  21        *)
  22                bases="$bases$arg "
  23                ;;
  24        esac
  25done
  26
  27# Give up if we are given two or more remotes -- not handling octopus.
  28case "$remotes" in
  29?*' '?*)
  30        exit 2 ;;
  31esac
  32
  33# Find an optimum merge base if there are more than one candidates.
  34case "$bases" in
  35?*' '?*)
  36        echo "Trying to find the optimum merge base."
  37        G=.tmp-index$$
  38        best=
  39        best_cnt=-1
  40        for c in $bases
  41        do
  42                rm -f $G
  43                GIT_INDEX_FILE=$G git read-tree -m $c $head $remotes \
  44                         2>/dev/null || continue
  45                # Count the paths that are unmerged.
  46                cnt=`GIT_INDEX_FILE=$G git ls-files --unmerged | wc -l`
  47                if test $best_cnt -le 0 -o $cnt -le $best_cnt
  48                then
  49                        best=$c
  50                        best_cnt=$cnt
  51                        if test "$best_cnt" -eq 0
  52                        then
  53                                # Cannot do any better than all trivial merge.
  54                                break
  55                        fi
  56                fi
  57        done
  58        rm -f $G
  59        common="$best"
  60        ;;
  61*)
  62        common="$bases"
  63        ;;
  64esac
  65
  66git update-index --refresh 2>/dev/null
  67git read-tree -u -m $common $head $remotes || exit 2
  68echo "Trying simple merge."
  69if result_tree=$(git write-tree  2>/dev/null)
  70then
  71        exit 0
  72else
  73        echo "Simple merge failed, trying Automatic merge."
  74        if git-merge-index -o git-merge-one-file -a
  75        then
  76                exit 0
  77        else
  78                exit 1
  79        fi
  80fi