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822f7c7349
A lot of shell scripts contained stuff starting with while case "$#" in 0) break ;; esac and similar. I consider breaking out of the condition instead of the body od the loop ugly, and the implied "true" value of the non-matching case is not really obvious to humans at first glance. It happens not to be obvious to some BSD shells, either, but that's because they are not POSIX-compliant. In most cases, this has been replaced by a straight condition using "test". "case" has the advantage of being faster than "test" on vintage shells where "test" is not a builtin. Since none of them is likely to run the git scripts, anyway, the added readability should be worth the change. A few loops have had their termination condition expressed differently. Signed-off-by: David Kastrup <dak@gnu.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
124 lines
3.1 KiB
Bash
Executable File
124 lines
3.1 KiB
Bash
Executable File
#!/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 :
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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 $strategy "
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;;
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-h|--h|--he|--hel|--help)
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usage
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;;
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*)
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# Pass thru anything that may be meant for fetch.
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break
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;;
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esac
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shift
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done
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orig_head=$(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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