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123 lines
3.2 KiB
123 lines
3.2 KiB
#!/bin/sh |
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# |
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# Copyright (c) 2005 Junio C Hamano |
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# |
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# Fetch one or more remote refs and merge it/them into the current HEAD. |
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USAGE='[-n | --no-summary] [--no-commit] [-s strategy]... [<fetch-options>] <repo> <head>...' |
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LONG_USAGE='Fetch one or more remote refs and merge it/them into the current HEAD.' |
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SUBDIRECTORY_OK=Yes |
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. git-sh-setup |
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set_reflog_action "pull $*" |
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require_work_tree |
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cd_to_toplevel |
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test -z "$(git ls-files -u)" || |
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die "You are in the middle of a conflicted merge." |
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strategy_args= no_summary= no_commit= squash= |
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while case "$#,$1" in 0) break ;; *,-*) ;; *) break ;; esac |
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do |
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case "$1" in |
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-n|--n|--no|--no-|--no-s|--no-su|--no-sum|--no-summ|\ |
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--no-summa|--no-summar|--no-summary) |
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no_summary=-n ;; |
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--summary) |
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no_summary=$1 |
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;; |
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--no-c|--no-co|--no-com|--no-comm|--no-commi|--no-commit) |
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no_commit=--no-commit ;; |
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--sq|--squ|--squa|--squas|--squash) |
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squash=--squash ;; |
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-s=*|--s=*|--st=*|--str=*|--stra=*|--strat=*|--strate=*|\ |
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--strateg=*|--strategy=*|\ |
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-s|--s|--st|--str|--stra|--strat|--strate|--strateg|--strategy) |
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case "$#,$1" in |
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*,*=*) |
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strategy=`expr "z$1" : 'z-[^=]*=\(.*\)'` ;; |
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1,*) |
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usage ;; |
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*) |
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strategy="$2" |
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shift ;; |
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esac |
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strategy_args="${strategy_args}-s $strategy " |
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;; |
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-h|--h|--he|--hel|--help) |
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usage |
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;; |
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-*) |
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# Pass thru anything that is meant for fetch. |
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break |
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;; |
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esac |
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shift |
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done |
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orig_head=$(git rev-parse --verify HEAD 2>/dev/null) |
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git-fetch --update-head-ok "$@" || exit 1 |
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curr_head=$(git rev-parse --verify HEAD 2>/dev/null) |
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if test "$curr_head" != "$orig_head" |
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then |
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# The fetch involved updating the current branch. |
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# The working tree and the index file is still based on the |
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# $orig_head commit, but we are merging into $curr_head. |
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# First update the working tree to match $curr_head. |
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echo >&2 "Warning: fetch updated the current branch head." |
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echo >&2 "Warning: fast forwarding your working tree from" |
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echo >&2 "Warning: commit $orig_head." |
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git update-index --refresh 2>/dev/null |
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git read-tree -u -m "$orig_head" "$curr_head" || |
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die 'Cannot fast-forward your working tree. |
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After making sure that you saved anything precious from |
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$ git diff '$orig_head' |
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output, run |
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$ git reset --hard |
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to recover.' |
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fi |
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merge_head=$(sed -e '/ not-for-merge /d' \ |
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-e 's/ .*//' "$GIT_DIR"/FETCH_HEAD | \ |
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tr '\012' ' ') |
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case "$merge_head" in |
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'') |
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curr_branch=$(git symbolic-ref -q HEAD) |
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case $? in |
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0) ;; |
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1) echo >&2 "You are not currently on a branch; you must explicitly" |
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echo >&2 "specify which branch you wish to merge:" |
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echo >&2 " git pull <remote> <branch>" |
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exit 1;; |
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*) exit $?;; |
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esac |
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curr_branch=${curr_branch#refs/heads/} |
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echo >&2 "Warning: No merge candidate found because value of config option |
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\"branch.${curr_branch}.merge\" does not match any remote branch fetched." |
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echo >&2 "No changes." |
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exit 0 |
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;; |
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?*' '?*) |
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if test -z "$orig_head" |
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then |
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echo >&2 "Cannot merge multiple branches into empty head" |
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exit 1 |
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fi |
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;; |
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esac |
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if test -z "$orig_head" |
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then |
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git update-ref -m "initial pull" HEAD $merge_head "" && |
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git read-tree --reset -u HEAD || exit 1 |
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exit |
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fi |
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merge_name=$(git fmt-merge-msg <"$GIT_DIR/FETCH_HEAD") || exit |
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exec git-merge $no_summary $no_commit $squash $strategy_args \ |
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"$merge_name" HEAD $merge_head
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