Skip to content
This repository

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
tag: v1.6.2.5
Fetching contributors…

Cannot retrieve contributors at this time

executable file 202 lines (186 sloc) 5.754 kb
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202
#!/bin/sh
#
# Copyright (c) 2005 Junio C Hamano
#
# Fetch one or more remote refs and merge it/them into the current HEAD.

USAGE='[-n | --no-stat] [--[no-]commit] [--[no-]squash] [--[no-]ff] [-s strategy]... [<fetch-options>] <repo> <head>...'
LONG_USAGE='Fetch one or more remote refs and merge it/them into the current HEAD.'
SUBDIRECTORY_OK=Yes
OPTIONS_SPEC=
. git-sh-setup
set_reflog_action "pull $*"
require_work_tree
cd_to_toplevel

test -z "$(git ls-files -u)" ||
die "You are in the middle of a conflicted merge."

strategy_args= no_stat= no_commit= squash= no_ff= log_arg= verbosity=
curr_branch=$(git symbolic-ref -q HEAD)
curr_branch_short=$(echo "$curr_branch" | sed "s|refs/heads/||")
rebase=$(git config --bool branch.$curr_branch_short.rebase)
while :
do
case "$1" in
-q|--quiet)
verbosity="$verbosity -q" ;;
-v|--verbose)
verbosity="$verbosity -v" ;;
-n|--no-stat|--no-summary)
no_stat=-n ;;
--stat|--summary)
no_stat=$1 ;;
--log|--no-log)
log_arg=$1 ;;
--no-c|--no-co|--no-com|--no-comm|--no-commi|--no-commit)
no_commit=--no-commit ;;
--c|--co|--com|--comm|--commi|--commit)
no_commit=--commit ;;
--sq|--squ|--squa|--squas|--squash)
squash=--squash ;;
--no-sq|--no-squ|--no-squa|--no-squas|--no-squash)
squash=--no-squash ;;
--ff)
no_ff=--ff ;;
--no-ff)
no_ff=--no-ff ;;
-s=*|--s=*|--st=*|--str=*|--stra=*|--strat=*|--strate=*|\
--strateg=*|--strategy=*|\
-s|--s|--st|--str|--stra|--strat|--strate|--strateg|--strategy)
case "$#,$1" in
*,*=*)
strategy=`expr "z$1" : 'z-[^=]*=\(.*\)'` ;;
1,*)
usage ;;
*)
strategy="$2"
shift ;;
esac
strategy_args="${strategy_args}-s $strategy "
;;
-r|--r|--re|--reb|--reba|--rebas|--rebase)
rebase=true
;;
--no-r|--no-re|--no-reb|--no-reba|--no-rebas|--no-rebase)
rebase=false
;;
-h|--h|--he|--hel|--help)
usage
;;
*)
# Pass thru anything that may be meant for fetch.
break
;;
esac
shift
done

error_on_no_merge_candidates () {
exec >&2
for opt
do
case "$opt" in
-t|--t|--ta|--tag|--tags)
echo "Fetching tags only, you probably meant:"
echo " git fetch --tags"
exit 1
esac
done

curr_branch=${curr_branch#refs/heads/}

if [ -z "$curr_branch" ]; then
echo "You are not currently on a branch, so I cannot use any"
echo "'branch.<branchname>.merge' in your configuration file."
echo "Please specify which branch you want to merge on the command"
echo "line and try again (e.g. 'git pull <repository> <refspec>')."
echo "See git-pull(1) for details."
else
echo "You asked me to pull without telling me which branch you"
echo "want to merge with, and 'branch.${curr_branch}.merge' in"
echo "your configuration file does not tell me either. Please"
echo "specify which branch you want to merge on the command line and"
echo "try again (e.g. 'git pull <repository> <refspec>')."
echo "See git-pull(1) for details."
echo
echo "If you often merge with the same branch, you may want to"
echo "configure the following variables in your configuration"
echo "file:"
echo
echo " branch.${curr_branch}.remote = <nickname>"
echo " branch.${curr_branch}.merge = <remote-ref>"
echo " remote.<nickname>.url = <url>"
echo " remote.<nickname>.fetch = <refspec>"
echo
echo "See git-config(1) for details."
fi
exit 1
}

test true = "$rebase" && {
git update-index --ignore-submodules --refresh &&
git diff-files --ignore-submodules --quiet &&
git diff-index --ignore-submodules --cached --quiet HEAD -- ||
die "refusing to pull with rebase: your working tree is not up-to-date"

. git-parse-remote &&
origin="$1"
test -z "$origin" && origin=$(get_default_remote)
reflist="$(get_remote_refs_for_fetch "$@" 2>/dev/null |
sed "s|refs/heads/\(.*\):|\1|")" &&
oldremoteref="$(git rev-parse -q --verify \
"refs/remotes/$origin/$reflist")"
}
orig_head=$(git rev-parse -q --verify HEAD)
git fetch $verbosity --update-head-ok "$@" || exit 1

curr_head=$(git rev-parse -q --verify HEAD)
if test -n "$orig_head" && test "$curr_head" != "$orig_head"
then
# The fetch involved updating the current branch.

# The working tree and the index file is still based on the
# $orig_head commit, but we are merging into $curr_head.
# First update the working tree to match $curr_head.

echo >&2 "Warning: fetch updated the current branch head."
echo >&2 "Warning: fast forwarding your working tree from"
echo >&2 "Warning: commit $orig_head."
git update-index --refresh 2>/dev/null
git read-tree -u -m "$orig_head" "$curr_head" ||
die 'Cannot fast-forward your working tree.
After making sure that you saved anything precious from
$ git diff '$orig_head'
output, run
$ git reset --hard
to recover.'

fi

merge_head=$(sed -e '/ not-for-merge /d' \
-e 's/ .*//' "$GIT_DIR"/FETCH_HEAD | \
tr '\012' ' ')

case "$merge_head" in
'')
case $? in
0) error_on_no_merge_candidates "$@";;
1) echo >&2 "You are not currently on a branch; you must explicitly"
echo >&2 "specify which branch you wish to merge:"
echo >&2 " git pull <remote> <branch>"
exit 1;;
*) exit $?;;
esac
;;
?*' '?*)
if test -z "$orig_head"
then
echo >&2 "Cannot merge multiple branches into empty head"
exit 1
fi
if test true = "$rebase"
then
echo >&2 "Cannot rebase onto multiple branches"
exit 1
fi
;;
esac

if test -z "$orig_head"
then
git update-ref -m "initial pull" HEAD $merge_head "$curr_head" &&
git read-tree --reset -u HEAD || exit 1
exit
fi

merge_name=$(git fmt-merge-msg $log_arg <"$GIT_DIR/FETCH_HEAD") || exit
test true = "$rebase" &&
exec git-rebase $strategy_args --onto $merge_head \
${oldremoteref:-$merge_head}
exec git-merge $no_stat $no_commit $squash $no_ff $log_arg $strategy_args \
"$merge_name" HEAD $merge_head $verbosity
Something went wrong with that request. Please try again.