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158 lines
4.1 KiB
Bash
Executable File
158 lines
4.1 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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USAGE='[--onto <newbase>] <upstream> [<branch>]'
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LONG_USAGE='git-rebase replaces <branch> with a new branch of the
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same name. When the --onto option is provided the new branch starts
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out with a HEAD equal to <newbase>, otherwise it is equal to <upstream>
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It then attempts to create a new commit for each commit from the original
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<branch> that does not exist in the <upstream> branch.
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It is possible that a merge failure will prevent this process from being
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completely automatic. You will have to resolve any such merge failure
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and run git rebase --continue. Another option is to bypass the commit
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that caused the merge failure with git rebase --skip. To restore the
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original <branch> and remove the .dotest working files, use the command
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git rebase --abort instead.
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Note that if <branch> is not specified on the command line, the
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currently checked out branch is used. You must be in the top
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directory of your project to start (or continue) a rebase.
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Example: git-rebase master~1 topic
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A---B---C topic A'\''--B'\''--C'\'' topic
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/ --> /
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D---E---F---G master D---E---F---G master
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'
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. git-sh-setup
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RESOLVEMSG="
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When you have resolved this problem run \"git rebase --continue\".
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If you would prefer to skip this patch, instead run \"git rebase --skip\".
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To restore the original branch and stop rebasing run \"git rebase --abort\".
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"
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unset newbase
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while case "$#" in 0) break ;; esac
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do
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case "$1" in
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--continue)
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diff=$(git-diff-files)
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case "$diff" in
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?*) echo "You must edit all merge conflicts and then"
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echo "mark them as resolved using git update-index"
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exit 1
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;;
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esac
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git am --resolved --3way --resolvemsg="$RESOLVEMSG"
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exit
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;;
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--skip)
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git am -3 --skip --resolvemsg="$RESOLVEMSG"
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exit
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;;
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--abort)
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[ -d .dotest ] || die "No rebase in progress?"
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git reset --hard ORIG_HEAD
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rm -r .dotest
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exit
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;;
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--onto)
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test 2 -le "$#" || usage
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newbase="$2"
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shift
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;;
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-*)
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usage
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;;
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*)
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break
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;;
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esac
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shift
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done
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# Make sure we do not have .dotest
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if mkdir .dotest
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then
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rmdir .dotest
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else
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echo >&2 '
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It seems that I cannot create a .dotest directory, and I wonder if you
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are in the middle of patch application or another rebase. If that is not
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the case, please rm -fr .dotest and run me again. I am stopping in case
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you still have something valuable there.'
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exit 1
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fi
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# The tree must be really really clean.
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git-update-index --refresh || exit
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diff=$(git-diff-index --cached --name-status -r HEAD)
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case "$diff" in
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?*) echo "$diff"
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exit 1
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;;
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esac
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# The upstream head must be given. Make sure it is valid.
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upstream_name="$1"
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upstream=`git rev-parse --verify "${upstream_name}^0"` ||
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die "invalid upstream $upstream_name"
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# If a hook exists, give it a chance to interrupt
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if test -x "$GIT_DIR/hooks/pre-rebase"
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then
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"$GIT_DIR/hooks/pre-rebase" ${1+"$@"} || {
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echo >&2 "The pre-rebase hook refused to rebase."
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exit 1
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}
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fi
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# If the branch to rebase is given, first switch to it.
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case "$#" in
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2)
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branch_name="$2"
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git-checkout "$2" || usage
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;;
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*)
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branch_name=`git symbolic-ref HEAD` || die "No current branch"
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branch_name=`expr "z$branch_name" : 'zrefs/heads/\(.*\)'`
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;;
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esac
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branch=$(git-rev-parse --verify "${branch_name}^0") || exit
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# Make sure the branch to rebase onto is valid.
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onto_name=${newbase-"$upstream_name"}
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onto=$(git-rev-parse --verify "${onto_name}^0") || exit
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# Now we are rebasing commits $upstream..$branch on top of $onto
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# Check if we are already based on $onto, but this should be
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# done only when upstream and onto are the same.
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if test "$upstream" = "$onto"
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then
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mb=$(git-merge-base "$onto" "$branch")
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if test "$mb" = "$onto"
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then
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echo >&2 "Current branch $branch_name is up to date."
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exit 0
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fi
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fi
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# Rewind the head to "$onto"; this saves our current head in ORIG_HEAD.
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git-reset --hard "$onto"
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# If the $onto is a proper descendant of the tip of the branch, then
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# we just fast forwarded.
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if test "$mb" = "$onto"
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then
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echo >&2 "Fast-forwarded $branch to $newbase."
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exit 0
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fi
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git-format-patch -k --stdout --full-index "$upstream"..ORIG_HEAD |
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git am --binary -3 -k --resolvemsg="$RESOLVEMSG"
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