mirror of
https://github.com/git/git.git
synced 2024-11-25 02:44:48 +08:00
087b6742fc
Now git-apply can grok binary replacement patches, give --binary flag to git-am. As a safety measure, this is not by default enabled, so that you do not let malicious e-mailed patch to replace an arbitrary path with just a couple of lines (diff index lines, the filename and string "Binary files "...) by accident. Signed-off-by: Junio C Hamano <junkio@cox.net>
408 lines
9.6 KiB
Bash
Executable File
408 lines
9.6 KiB
Bash
Executable File
#!/bin/sh
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#
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#
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. git-sh-setup || die "Not a git archive"
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usage () {
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echo >&2 "usage: $0 [--signoff] [--dotest=<dir>] [--utf8] [--binary] [--3way] <mbox>"
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echo >&2 " or, when resuming"
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echo >&2 " $0 [--skip | --resolved]"
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exit 1;
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}
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stop_here () {
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echo "$1" >"$dotest/next"
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exit 1
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}
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go_next () {
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rm -f "$dotest/$msgnum" "$dotest/msg" "$dotest/msg-clean" \
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"$dotest/patch" "$dotest/info"
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echo "$next" >"$dotest/next"
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this=$next
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}
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fall_back_3way () {
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O_OBJECT=`cd "$GIT_OBJECT_DIRECTORY" && pwd`
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rm -fr "$dotest"/patch-merge-*
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mkdir "$dotest/patch-merge-tmp-dir"
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# First see if the patch records the index info that we can use.
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if git-apply -z --index-info "$dotest/patch" \
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>"$dotest/patch-merge-index-info" 2>/dev/null &&
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GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
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git-update-index -z --index-info <"$dotest/patch-merge-index-info" &&
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GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
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git-write-tree >"$dotest/patch-merge-base+" &&
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# index has the base tree now.
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(
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cd "$dotest/patch-merge-tmp-dir" &&
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GIT_INDEX_FILE="../patch-merge-tmp-index" \
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GIT_OBJECT_DIRECTORY="$O_OBJECT" \
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git-apply $binary --index <../patch
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)
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then
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echo Using index info to reconstruct a base tree...
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mv "$dotest/patch-merge-base+" "$dotest/patch-merge-base"
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mv "$dotest/patch-merge-tmp-index" "$dotest/patch-merge-index"
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else
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# Otherwise, try nearby trees that can be used to apply the
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# patch.
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(
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N=10
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# Hoping the patch is against our recent commits...
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git-rev-list --max-count=$N HEAD
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# or hoping the patch is against known tags...
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git-ls-remote --tags .
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) |
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while read base junk
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do
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# See if we have it as a tree...
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git-cat-file tree "$base" >/dev/null 2>&1 || continue
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rm -fr "$dotest"/patch-merge-* &&
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mkdir "$dotest/patch-merge-tmp-dir" || break
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(
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cd "$dotest/patch-merge-tmp-dir" &&
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GIT_INDEX_FILE=../patch-merge-tmp-index &&
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GIT_OBJECT_DIRECTORY="$O_OBJECT" &&
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export GIT_INDEX_FILE GIT_OBJECT_DIRECTORY &&
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git-read-tree "$base" &&
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git-apply $binary --index &&
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mv ../patch-merge-tmp-index ../patch-merge-index &&
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echo "$base" >../patch-merge-base
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) <"$dotest/patch" 2>/dev/null && break
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done
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fi
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test -f "$dotest/patch-merge-index" &&
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his_tree=$(GIT_INDEX_FILE="$dotest/patch-merge-index" git-write-tree) &&
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orig_tree=$(cat "$dotest/patch-merge-base") &&
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rm -fr "$dotest"/patch-merge-* || exit 1
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echo Falling back to patching base and 3-way merge...
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# This is not so wrong. Depending on which base we picked,
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# orig_tree may be wildly different from ours, but his_tree
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# has the same set of wildly different changes in parts the
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# patch did not touch, so resolve ends up cancelling them,
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# saying that we reverted all those changes.
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git-merge-resolve $orig_tree -- HEAD $his_tree || {
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echo Failed to merge in the changes.
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exit 1
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}
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}
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prec=4
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dotest=.dotest sign= utf8= keep= skip= interactive= resolved= binary=
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while case "$#" in 0) break;; esac
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do
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case "$1" in
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-d=*|--d=*|--do=*|--dot=*|--dote=*|--dotes=*|--dotest=*)
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dotest=`expr "$1" : '-[^=]*=\(.*\)'`; shift ;;
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-d|--d|--do|--dot|--dote|--dotes|--dotest)
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case "$#" in 1) usage ;; esac; shift
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dotest="$1"; shift;;
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-i|--i|--in|--int|--inte|--inter|--intera|--interac|--interact|\
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--interacti|--interactiv|--interactive)
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interactive=t; shift ;;
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-b|--b|--bi|--bin|--bina|--binar|--binary)
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binary=t; shift ;;
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-3|--3|--3w|--3wa|--3way)
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threeway=t; shift ;;
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-s|--s|--si|--sig|--sign|--signo|--signof|--signoff)
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sign=t; shift ;;
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-u|--u|--ut|--utf|--utf8)
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utf8=t; shift ;;
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-k|--k|--ke|--kee|--keep)
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keep=t; shift ;;
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-r|--r|--re|--res|--reso|--resol|--resolv|--resolve|--resolved)
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resolved=t; shift ;;
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--sk|--ski|--skip)
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skip=t; shift ;;
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--)
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shift; break ;;
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-*)
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usage ;;
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*)
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break ;;
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esac
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done
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# If the dotest directory exists, but we have finished applying all the
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# patches in them, clear it out.
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if test -d "$dotest" &&
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last=$(cat "$dotest/last") &&
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next=$(cat "$dotest/next") &&
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test $# != 0 &&
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test "$next" -gt "$last"
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then
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rm -fr "$dotest"
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fi
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if test -d "$dotest"
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then
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test ",$#," = ",0," ||
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die "previous dotest directory $dotest still exists but mbox given."
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resume=yes
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else
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# Make sure we are not given --skip nor --resolved
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test ",$skip,$resolved," = ,,, ||
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die "we are not resuming."
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# Start afresh.
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mkdir -p "$dotest" || exit
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# cat does the right thing for us, including '-' to mean
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# standard input.
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cat "$@" |
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git-mailsplit -d$prec "$dotest/" >"$dotest/last" || {
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rm -fr "$dotest"
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exit 1
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}
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# -b, -s, -u and -k flags are kept for the resuming session after
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# a patch failure.
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# -3 and -i can and must be given when resuming.
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echo "$binary" >"$dotest/binary"
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echo "$sign" >"$dotest/sign"
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echo "$utf8" >"$dotest/utf8"
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echo "$keep" >"$dotest/keep"
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echo 1 >"$dotest/next"
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fi
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case "$resolved" in
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'')
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files=$(git-diff-index --cached --name-only HEAD) || exit
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if [ "$files" ]; then
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echo "Dirty index: cannot apply patches (dirty: $files)" >&2
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exit 1
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fi
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esac
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if test "$(cat "$dotest/binary")" = t
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then
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binary=--allow-binary-replacement
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fi
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if test "$(cat "$dotest/utf8")" = t
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then
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utf8=-u
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fi
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if test "$(cat "$dotest/keep")" = t
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then
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keep=-k
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fi
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if test "$(cat "$dotest/sign")" = t
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then
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SIGNOFF=`git-var GIT_COMMITTER_IDENT | sed -e '
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s/>.*/>/
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s/^/Signed-off-by: /'
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`
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else
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SIGNOFF=
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fi
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last=`cat "$dotest/last"`
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this=`cat "$dotest/next"`
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if test "$skip" = t
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then
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this=`expr "$this" + 1`
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fi
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if test "$this" -gt "$last"
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then
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echo Nothing to do.
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rm -fr "$dotest"
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exit
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fi
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while test "$this" -le "$last"
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do
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msgnum=`printf "%0${prec}d" $this`
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next=`expr "$this" + 1`
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test -f "$dotest/$msgnum" || {
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go_next
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continue
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}
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# If we are not resuming, parse and extract the patch information
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# into separate files:
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# - info records the authorship and title
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# - msg is the rest of commit log message
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# - patch is the patch body.
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#
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# When we are resuming, these files are either already prepared
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# by the user, or the user can tell us to do so by --resolved flag.
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case "$resume" in
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'')
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git-mailinfo $keep $utf8 "$dotest/msg" "$dotest/patch" \
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<"$dotest/$msgnum" >"$dotest/info" ||
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stop_here $this
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git-stripspace < "$dotest/msg" > "$dotest/msg-clean"
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;;
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esac
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GIT_AUTHOR_NAME="$(sed -n '/^Author/ s/Author: //p' "$dotest/info")"
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GIT_AUTHOR_EMAIL="$(sed -n '/^Email/ s/Email: //p' "$dotest/info")"
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GIT_AUTHOR_DATE="$(sed -n '/^Date/ s/Date: //p' "$dotest/info")"
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export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
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SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$dotest/info")"
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case "$keep_subject" in -k) SUBJECT="[PATCH] $SUBJECT" ;; esac
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case "$resume" in
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'')
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if test '' != "$SIGNOFF"
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then
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LAST_SIGNED_OFF_BY=`
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sed -ne '/^Signed-off-by: /p' \
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"$dotest/msg-clean" |
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tail -n 1
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`
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ADD_SIGNOFF=`
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test "$LAST_SIGNED_OFF_BY" = "$SIGNOFF" || {
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test '' = "$LAST_SIGNED_OFF_BY" && echo
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echo "$SIGNOFF"
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}`
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else
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ADD_SIGNOFF=
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fi
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{
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echo "$SUBJECT"
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if test -s "$dotest/msg-clean"
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then
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echo
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cat "$dotest/msg-clean"
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fi
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if test '' != "$ADD_SIGNOFF"
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then
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echo "$ADD_SIGNOFF"
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fi
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} >"$dotest/final-commit"
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;;
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*)
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case "$resolved,$interactive" in
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tt)
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# This is used only for interactive view option.
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git-diff-index -p --cached HEAD >"$dotest/patch"
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;;
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esac
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esac
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resume=
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if test "$interactive" = t
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then
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test -t 0 ||
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die "cannot be interactive without stdin connected to a terminal."
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action=again
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while test "$action" = again
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do
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echo "Commit Body is:"
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echo "--------------------------"
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cat "$dotest/final-commit"
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echo "--------------------------"
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echo -n "Apply? [y]es/[n]o/[e]dit/[v]iew patch/[a]ccept all "
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read reply
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case "$reply" in
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[yY]*) action=yes ;;
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[aA]*) action=yes interactive= ;;
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[nN]*) action=skip ;;
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[eE]*) "${VISUAL:-${EDITOR:-vi}}" "$dotest/final-commit"
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action=again ;;
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[vV]*) action=again
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LESS=-S ${PAGER:-less} "$dotest/patch" ;;
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*) action=again ;;
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esac
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done
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else
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action=yes
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fi
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if test $action = skip
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then
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go_next
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continue
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fi
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if test -x "$GIT_DIR"/hooks/applypatch-msg
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then
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"$GIT_DIR"/hooks/applypatch-msg "$dotest/final-commit" ||
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stop_here $this
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fi
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echo
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echo "Applying '$SUBJECT'"
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echo
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case "$resolved" in
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'')
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git-apply $binary --index "$dotest/patch"
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apply_status=$?
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;;
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t)
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# Resolved means the user did all the hard work, and
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# we do not have to do any patch application. Just
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# trust what the user has in the index file and the
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# working tree.
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resolved=
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apply_status=0
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;;
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esac
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if test $apply_status = 1 && test "$threeway" = t
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then
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if (fall_back_3way)
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then
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# Applying the patch to an earlier tree and merging the
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# result may have produced the same tree as ours.
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changed="$(git-diff-index --cached --name-only -z HEAD)"
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if test '' = "$changed"
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then
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echo No changes -- Patch already applied.
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go_next
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continue
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fi
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# clear apply_status -- we have successfully merged.
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apply_status=0
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fi
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fi
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if test $apply_status != 0
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then
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echo Patch failed at $msgnum.
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stop_here $this
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fi
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if test -x "$GIT_DIR"/hooks/pre-applypatch
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then
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"$GIT_DIR"/hooks/pre-applypatch || stop_here $this
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fi
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tree=$(git-write-tree) &&
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echo Wrote tree $tree &&
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parent=$(git-rev-parse --verify HEAD) &&
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commit=$(git-commit-tree $tree -p $parent <"$dotest/final-commit") &&
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echo Committed: $commit &&
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git-update-ref HEAD $commit $parent ||
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stop_here $this
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if test -x "$GIT_DIR"/hooks/post-applypatch
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then
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"$GIT_DIR"/hooks/post-applypatch
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fi
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go_next
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done
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rm -fr "$dotest"
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