add_to_alternates_file: don't add duplicate entries
[gitweb.git] / git-am.sh
index a3b6f988229c6f412fb4309a34a0a22c1c84c27c..3b770281232904132ac10620ded4a36d36a00be5 100755 (executable)
--- a/git-am.sh
+++ b/git-am.sh
@@ -4,7 +4,7 @@
 
 SUBDIRECTORY_OK=Yes
 OPTIONS_KEEPDASHDASH=
-OPTIONS_STUCKLONG=
+OPTIONS_STUCKLONG=t
 OPTIONS_SPEC="\
 git am [options] [(<mbox>|<Maildir>)...]
 git am [options] (--continue | --skip | --abort)
@@ -17,6 +17,7 @@ s,signoff       add a Signed-off-by line to the commit message
 u,utf8          recode into utf8 (default)
 k,keep          pass -k flag to git-mailinfo
 keep-non-patch  pass -b flag to git-mailinfo
+m,message-id    pass -m flag to git-mailinfo
 keep-cr         pass --keep-cr flag to git-mailsplit for mbox format
 no-keep-cr      do not pass --keep-cr flag to git-mailsplit independent of am.keepcr
 c,scissors      strip everything before a scissors line
@@ -38,6 +39,7 @@ abort           restore the original branch and abort the patching operation.
 committer-date-is-author-date    lie about committer date
 ignore-date     use current timestamp for author date
 rerere-autoupdate update the index with reused conflict resolution if possible
+S,gpg-sign?     GPG-sign commits
 rebasing*       (internal use for git-rebase)"
 
 . git-sh-setup
@@ -67,6 +69,8 @@ then
        cmdline="$cmdline -3"
 fi
 
+empty_tree=4b825dc642cb6eb9a060e54bf8d69288fbee4904
+
 sq () {
        git rev-parse --sq-quote "$@"
 }
@@ -83,7 +87,7 @@ safe_to_abort () {
                return 1
        fi
 
-       if ! test -s "$dotest/abort-safety"
+       if ! test -f "$dotest/abort-safety"
        then
                return 0
        fi
@@ -124,7 +128,7 @@ cannot_fallback () {
 }
 
 fall_back_3way () {
-    O_OBJECT=`cd "$GIT_OBJECT_DIRECTORY" && pwd`
+    O_OBJECT=$(cd "$GIT_OBJECT_DIRECTORY" && pwd)
 
     rm -fr "$dotest"/patch-merge-*
     mkdir "$dotest/patch-merge-tmp-dir"
@@ -175,7 +179,8 @@ It does not apply to blobs recorded in its index.")"
     then
            GIT_MERGE_VERBOSITY=0 && export GIT_MERGE_VERBOSITY
     fi
-    git-merge-recursive $orig_tree -- HEAD $his_tree || {
+    our_tree=$(git rev-parse --verify -q HEAD || echo $empty_tree)
+    git-merge-recursive $orig_tree -- $our_tree $his_tree || {
            git rerere $allow_rerere_autoupdate
            die "$(gettext "Failed to merge in the changes.")"
     }
@@ -274,7 +279,7 @@ split_patches () {
                then
                        clean_abort "$(gettext "Only one StGIT patch series can be applied at once")"
                fi
-               series_dir=`dirname "$1"`
+               series_dir=$(dirname "$1")
                series_file="$1"
                shift
                {
@@ -295,10 +300,11 @@ split_patches () {
                ;;
        stgit)
                this=0
+               test 0 -eq "$#" && set -- -
                for stgit in "$@"
                do
-                       this=`expr "$this" + 1`
-                       msgnum=`printf "%0${prec}d" $this`
+                       this=$(expr "$this" + 1)
+                       msgnum=$(printf "%0${prec}d" $this)
                        # Perl version of StGIT parse_patch. The first nonemptyline
                        # not starting with Author, From or Date is the
                        # subject, and the body starts with the next nonempty
@@ -316,7 +322,7 @@ split_patches () {
                                        print "Subject: ", $_ ;
                                        $subject = 1;
                                }
-                       ' < "$stgit" > "$dotest/$msgnum" || clean_abort
+                       ' -- "$stgit" >"$dotest/$msgnum" || clean_abort
                done
                echo "$this" > "$dotest/last"
                this=
@@ -324,6 +330,7 @@ split_patches () {
                ;;
        hg)
                this=0
+               test 0 -eq "$#" && set -- -
                for hg in "$@"
                do
                        this=$(( $this + 1 ))
@@ -340,17 +347,17 @@ split_patches () {
                                elsif (/^\# User /) { s/\# User/From:/ ; print ; }
                                elsif (/^\# Date /) {
                                        my ($hashsign, $str, $time, $tz) = split ;
-                                       $tz = sprintf "%+05d", (0-$tz)/36;
+                                       $tz_str = sprintf "%+05d", (0-$tz)/36;
                                        print "Date: " .
                                              strftime("%a, %d %b %Y %H:%M:%S ",
-                                                      localtime($time))
-                                             . "$tz\n";
+                                                      gmtime($time-$tz))
+                                             . "$tz_str\n";
                                } elsif (/^\# /) { next ; }
                                else {
                                        print "\n", $_ ;
                                        $subject = 1;
                                }
-                       ' <"$hg" >"$dotest/$msgnum" || clean_abort
+                       ' -- "$hg" >"$dotest/$msgnum" || clean_abort
                done
                echo "$this" >"$dotest/last"
                this=
@@ -370,11 +377,18 @@ split_patches () {
 prec=4
 dotest="$GIT_DIR/rebase-apply"
 sign= utf8=t keep= keepcr= skip= interactive= resolved= rebasing= abort=
-resolvemsg= resume= scissors= no_inbody_headers=
+messageid= resolvemsg= resume= scissors= no_inbody_headers=
 git_apply_opt=
 committer_date_is_author_date=
 ignore_date=
 allow_rerere_autoupdate=
+gpg_sign_opt=
+threeway=
+
+if test "$(git config --bool --get am.messageid)" = true
+then
+    messageid=t
+fi
 
 if test "$(git config --bool --get am.keepcr)" = true
 then
@@ -398,6 +412,10 @@ it will be removed. Please do not use it anymore."
                utf8=t ;; # this is now default
        --no-utf8)
                utf8= ;;
+       -m|--message-id)
+               messageid=t ;;
+       --no-message-id)
+               messageid=f ;;
        -k|--keep)
                keep=t ;;
        --keep-non-patch)
@@ -414,14 +432,14 @@ it will be removed. Please do not use it anymore."
                abort=t ;;
        --rebasing)
                rebasing=t threeway=t ;;
-       --resolvemsg)
-               shift; resolvemsg=$1 ;;
-       --whitespace|--directory|--exclude|--include)
-               git_apply_opt="$git_apply_opt $(sq "$1=$2")"; shift ;;
-       -C|-p)
-               git_apply_opt="$git_apply_opt $(sq "$1$2")"; shift ;;
-       --patch-format)
-               shift ; patch_format="$1" ;;
+       --resolvemsg=*)
+               resolvemsg="${1#--resolvemsg=}" ;;
+       --whitespace=*|--directory=*|--exclude=*|--include=*)
+               git_apply_opt="$git_apply_opt $(sq "$1")" ;;
+       -C*|-p*)
+               git_apply_opt="$git_apply_opt $(sq "$1")" ;;
+       --patch-format=*)
+               patch_format="${1#--patch-format=}" ;;
        --reject|--ignore-whitespace|--ignore-space-change)
                git_apply_opt="$git_apply_opt $1" ;;
        --committer-date-is-author-date)
@@ -436,6 +454,10 @@ it will be removed. Please do not use it anymore."
                keepcr=t ;;
        --no-keep-cr)
                keepcr=f ;;
+       --gpg-sign)
+               gpg_sign_opt=-S ;;
+       --gpg-sign=*)
+               gpg_sign_opt="-S${1#--gpg-sign=}" ;;
        --)
                shift; break ;;
        *)
@@ -486,10 +508,11 @@ then
                ;;
        t,)
                git rerere clear
-               git read-tree --reset -u HEAD HEAD
-               orig_head=$(cat "$GIT_DIR/ORIG_HEAD")
-               git reset HEAD
-               git update-ref ORIG_HEAD $orig_head
+               head_tree=$(git rev-parse --verify -q HEAD || echo $empty_tree) &&
+               git read-tree --reset -u $head_tree $head_tree &&
+               index_tree=$(git write-tree) &&
+               git read-tree -m -u $index_tree $head_tree
+               git read-tree $head_tree
                ;;
        ,t)
                if test -f "$dotest/rebasing"
@@ -499,8 +522,19 @@ then
                git rerere clear
                if safe_to_abort
                then
-                       git read-tree --reset -u HEAD ORIG_HEAD
-                       git reset ORIG_HEAD
+                       head_tree=$(git rev-parse --verify -q HEAD || echo $empty_tree) &&
+                       git read-tree --reset -u $head_tree $head_tree &&
+                       index_tree=$(git write-tree) &&
+                       orig_head=$(git rev-parse --verify -q ORIG_HEAD || echo $empty_tree) &&
+                       git read-tree -m -u $index_tree $orig_head
+                       if git rev-parse --verify -q ORIG_HEAD >/dev/null 2>&1
+                       then
+                               git reset ORIG_HEAD
+                       else
+                               git read-tree $empty_tree
+                               curr_branch=$(git symbolic-ref HEAD 2>/dev/null) &&
+                               git update-ref -d $curr_branch
+                       fi
                fi
                rm -fr "$dotest"
                exit ;;
@@ -524,7 +558,7 @@ Use \"git am --abort\" to remove it.")"
                esac
        fi
 
-       # Make sure we are not given --skip, --continue, nor --abort
+       # Make sure we are not given --skip, --continue, or --abort
        test "$skip$resolved$abort" = "" ||
                die "$(gettext "Resolve operation not in progress, we are not resuming.")"
 
@@ -561,6 +595,7 @@ Use \"git am --abort\" to remove it.")"
        echo "$sign" >"$dotest/sign"
        echo "$utf8" >"$dotest/utf8"
        echo "$keep" >"$dotest/keep"
+       echo "$messageid" >"$dotest/messageid"
        echo "$scissors" >"$dotest/scissors"
        echo "$no_inbody_headers" >"$dotest/no_inbody_headers"
        echo "$GIT_QUIET" >"$dotest/quiet"
@@ -615,6 +650,12 @@ b)
 *)
        keep= ;;
 esac
+case "$(cat "$dotest/messageid")" in
+t)
+       messageid=-m ;;
+f)
+       messageid= ;;
+esac
 case "$(cat "$dotest/scissors")" in
 t)
        scissors=--scissors ;;
@@ -638,26 +679,26 @@ fi
 git_apply_opt=$(cat "$dotest/apply-opt")
 if test "$(cat "$dotest/sign")" = t
 then
-       SIGNOFF=`git var GIT_COMMITTER_IDENT | sed -e '
+       SIGNOFF=$(git var GIT_COMMITTER_IDENT | sed -e '
                        s/>.*/>/
                        s/^/Signed-off-by: /'
-               `
+               )
 else
        SIGNOFF=
 fi
 
-last=`cat "$dotest/last"`
-this=`cat "$dotest/next"`
+last=$(cat "$dotest/last")
+this=$(cat "$dotest/next")
 if test "$skip" = t
 then
-       this=`expr "$this" + 1`
+       this=$(expr "$this" + 1)
        resume=
 fi
 
 while test "$this" -le "$last"
 do
-       msgnum=`printf "%0${prec}d" $this`
-       next=`expr "$this" + 1`
+       msgnum=$(printf "%0${prec}d" $this)
+       next=$(expr "$this" + 1)
        test -f "$dotest/$msgnum" || {
                resume=
                go_next
@@ -686,7 +727,7 @@ do
                        get_author_ident_from_commit "$commit" >"$dotest/author-script"
                        git diff-tree --root --binary --full-index "$commit" >"$dotest/patch"
                else
-                       git mailinfo $keep $no_inbody_headers $scissors $utf8 "$dotest/msg" "$dotest/patch" \
+                       git mailinfo $keep $no_inbody_headers $messageid $scissors $utf8 "$dotest/msg" "$dotest/patch" \
                                <"$dotest/$msgnum" >"$dotest/info" ||
                                stop_here $this
 
@@ -733,16 +774,16 @@ To restore the original branch and stop patching run \"\$cmdline --abort\"."
        '')
            if test '' != "$SIGNOFF"
            then
-               LAST_SIGNED_OFF_BY=`
+               LAST_SIGNED_OFF_BY=$(
                    sed -ne '/^Signed-off-by: /p' \
                    "$dotest/msg-clean" |
                    sed -ne '$p'
-               `
-               ADD_SIGNOFF=`
+               )
+               ADD_SIGNOFF=$(
                    test "$LAST_SIGNED_OFF_BY" = "$SIGNOFF" || {
                    test '' = "$LAST_SIGNED_OFF_BY" && echo
                    echo "$SIGNOFF"
-               }`
+               })
            else
                ADD_SIGNOFF=
            fi
@@ -804,10 +845,10 @@ To restore the original branch and stop patching run \"\$cmdline --abort\"."
                continue
        fi
 
-       if test -x "$GIT_DIR"/hooks/applypatch-msg
+       hook="$(git rev-parse --git-path hooks/applypatch-msg)"
+       if test -x "$hook"
        then
-               "$GIT_DIR"/hooks/applypatch-msg "$dotest/final-commit" ||
-               stop_here $this
+               "$hook" "$dotest/final-commit" || stop_here $this
        fi
 
        if test -f "$dotest/final-commit"
@@ -881,9 +922,10 @@ did you forget to use 'git add'?"
                stop_here_user_resolve $this
        fi
 
-       if test -x "$GIT_DIR"/hooks/pre-applypatch
+       hook="$(git rev-parse --git-path hooks/pre-applypatch)"
+       if test -x "$hook"
        then
-               "$GIT_DIR"/hooks/pre-applypatch || stop_here $this
+               "$hook" || stop_here $this
        fi
 
        tree=$(git write-tree) &&
@@ -900,7 +942,8 @@ did you forget to use 'git add'?"
                        GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"
                        export GIT_COMMITTER_DATE
                fi &&
-               git commit-tree $tree ${parent:+-p} $parent <"$dotest/final-commit"
+               git commit-tree ${parent:+-p} $parent ${gpg_sign_opt:+"$gpg_sign_opt"} $tree  \
+                       <"$dotest/final-commit"
        ) &&
        git update-ref -m "$GIT_REFLOG_ACTION: $FIRSTLINE" HEAD $commit $parent ||
        stop_here $this
@@ -909,18 +952,17 @@ did you forget to use 'git add'?"
                echo "$(cat "$dotest/original-commit") $commit" >> "$dotest/rewritten"
        fi
 
-       if test -x "$GIT_DIR"/hooks/post-applypatch
-       then
-               "$GIT_DIR"/hooks/post-applypatch
-       fi
+       hook="$(git rev-parse --git-path hooks/post-applypatch)"
+       test -x "$hook" && "$hook"
 
        go_next
 done
 
 if test -s "$dotest"/rewritten; then
     git notes copy --for-rewrite=rebase < "$dotest"/rewritten
-    if test -x "$GIT_DIR"/hooks/post-rewrite; then
-       "$GIT_DIR"/hooks/post-rewrite rebase < "$dotest"/rewritten
+    hook="$(git rev-parse --git-path hooks/post-rewrite)"
+    if test -x "$hook"; then
+       "$hook" rebase < "$dotest"/rewritten
     fi
 fi