Merge branch 'lt/diffgen' into next
[gitweb.git] / git-am.sh
index 115ebaddf595f49059208ac890308b6ebe01aa42..eab4aa891e522539bb145c9702200d3a788e650c 100755 (executable)
--- a/git-am.sh
+++ b/git-am.sh
@@ -1,20 +1,13 @@
 #!/bin/sh
 #
-#
-. git-sh-setup || die "Not a git archive"
+# Copyright (c) 2005, 2006 Junio C Hamano
 
-files=$(git-diff-index --cached --name-only HEAD) || exit
-if [ "$files" ]; then
-   echo "Dirty index: cannot apply patches (dirty: $files)" >&2
-   exit 1
-fi
+USAGE='[--signoff] [--dotest=<dir>] [--utf8] [--binary] [--3way]
+  [--interactive] [--whitespace=<option>] <mbox>...
+  or, when resuming [--skip | --resolved]'
+. git-sh-setup
 
-usage () {
-    echo >&2 "usage: $0 [--signoff] [--dotest=<dir>] [--utf8] [--3way] <mbox>"
-    echo >&2 " or, when resuming"
-    echo >&2 " $0 [--skip]"
-    exit 1;
-}
+git var GIT_COMMITTER_IDENT >/dev/null || exit
 
 stop_here () {
     echo "$1" >"$dotest/next"
@@ -46,7 +39,7 @@ fall_back_3way () {
            cd "$dotest/patch-merge-tmp-dir" &&
            GIT_INDEX_FILE="../patch-merge-tmp-index" \
            GIT_OBJECT_DIRECTORY="$O_OBJECT" \
-           git-apply --index <../patch
+           git-apply $binary --index <../patch
         )
     then
        echo Using index info to reconstruct a base tree...
@@ -77,7 +70,7 @@ fall_back_3way () {
                GIT_OBJECT_DIRECTORY="$O_OBJECT" &&
                export GIT_INDEX_FILE GIT_OBJECT_DIRECTORY &&
                git-read-tree "$base" &&
-               git-apply --index &&
+               git-apply $binary --index &&
                mv ../patch-merge-tmp-index ../patch-merge-index &&
                echo "$base" >../patch-merge-base
            ) <"$dotest/patch"  2>/dev/null && break
@@ -98,13 +91,17 @@ fall_back_3way () {
     # saying that we reverted all those changes.
 
     git-merge-resolve $orig_tree -- HEAD $his_tree || {
+           if test -d "$GIT_DIR/rr-cache"
+           then
+               git-rerere
+           fi
            echo Failed to merge in the changes.
            exit 1
     }
 }
 
 prec=4
-dotest=.dotest sign= utf8= keep= skip= interactive=
+dotest=.dotest sign= utf8= keep= skip= interactive= resolved= binary= ws=
 
 while case "$#" in 0) break;; esac
 do
@@ -119,6 +116,9 @@ do
        --interacti|--interactiv|--interactive)
        interactive=t; shift ;;
 
+       -b|--b|--bi|--bin|--bina|--binar|--binary)
+       binary=t; shift ;;
+
        -3|--3|--3w|--3wa|--3way)
        threeway=t; shift ;;
        -s|--s|--si|--sig|--sign|--signo|--signof|--signoff)
@@ -128,9 +128,15 @@ do
        -k|--k|--ke|--kee|--keep)
        keep=t; shift ;;
 
+       -r|--r|--re|--res|--reso|--resol|--resolv|--resolve|--resolved)
+       resolved=t; shift ;;
+
        --sk|--ski|--skip)
        skip=t; shift ;;
 
+       --whitespace=*)
+       ws=$1; shift ;;
+
        --)
        shift; break ;;
        -*)
@@ -140,6 +146,8 @@ do
        esac
 done
 
+# If the dotest directory exists, but we have finished applying all the
+# patches in them, clear it out.
 if test -d "$dotest" &&
    last=$(cat "$dotest/last") &&
    next=$(cat "$dotest/next") &&
@@ -155,27 +163,42 @@ then
        die "previous dotest directory $dotest still exists but mbox given."
        resume=yes
 else
-       # Make sure we are not given --skip
-       test ",$skip," = ,, ||
-       die "we are not resuming."
+       # Make sure we are not given --skip nor --resolved
+       test ",$skip,$resolved," = ,,, ||
+               die "we are not resuming."
 
        # Start afresh.
        mkdir -p "$dotest" || exit
 
-       # cat does the right thing for us, including '-' to mean
-       # standard input.
-       cat "$@" |
-       git-mailsplit -d$prec "$dotest/" >"$dotest/last" || {
+       git-mailsplit -d"$prec" -o"$dotest" -b -- "$@" > "$dotest/last" ||  {
                rm -fr "$dotest"
                exit 1
        }
 
+       # -b, -s, -u, -k and --whitespace flags are kept for the
+       # resuming session after a patch failure.
+       # -3 and -i can and must be given when resuming.
+       echo "$binary" >"$dotest/binary"
+       echo " $ws" >"$dotest/whitespace"
        echo "$sign" >"$dotest/sign"
        echo "$utf8" >"$dotest/utf8"
        echo "$keep" >"$dotest/keep"
        echo 1 >"$dotest/next"
 fi
 
+case "$resolved" in
+'')
+       files=$(git-diff-index --cached --name-only HEAD) || exit
+       if [ "$files" ]; then
+          echo "Dirty index: cannot apply patches (dirty: $files)" >&2
+          exit 1
+       fi
+esac
+
+if test "$(cat "$dotest/binary")" = t
+then
+       binary=--allow-binary-replacement
+fi
 if test "$(cat "$dotest/utf8")" = t
 then
        utf8=-u
@@ -184,6 +207,7 @@ if test "$(cat "$dotest/keep")" = t
 then
        keep=-k
 fi
+ws=`cat "$dotest/whitespace"`
 if test "$(cat "$dotest/sign")" = t
 then
        SIGNOFF=`git-var GIT_COMMITTER_IDENT | sed -e '
@@ -199,6 +223,7 @@ this=`cat "$dotest/next"`
 if test "$skip" = t
 then
        this=`expr "$this" + 1`
+       resume=
 fi
 
 if test "$this" -gt "$last"
@@ -213,9 +238,19 @@ do
        msgnum=`printf "%0${prec}d" $this`
        next=`expr "$this" + 1`
        test -f "$dotest/$msgnum" || {
+               resume=
                go_next
                continue
        }
+
+       # If we are not resuming, parse and extract the patch information
+       # into separate files:
+       #  - info records the authorship and title
+       #  - msg is the rest of commit log message
+       #  - patch is the patch body.
+       #
+       # When we are resuming, these files are either already prepared
+       # by the user, or the user can tell us to do so by --resolved flag.
        case "$resume" in
        '')
                git-mailinfo $keep $utf8 "$dotest/msg" "$dotest/patch" \
@@ -224,29 +259,40 @@ do
                git-stripspace < "$dotest/msg" > "$dotest/msg-clean"
                ;;
        esac
-       resume=
 
        GIT_AUTHOR_NAME="$(sed -n '/^Author/ s/Author: //p' "$dotest/info")"
        GIT_AUTHOR_EMAIL="$(sed -n '/^Email/ s/Email: //p' "$dotest/info")"
        GIT_AUTHOR_DATE="$(sed -n '/^Date/ s/Date: //p' "$dotest/info")"
-       SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$dotest/info")"
+
+       if test -z "$GIT_AUTHOR_EMAIL"
+       then
+               echo "Patch does not have a valid e-mail address."
+               stop_here $this
+       fi
+
        export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
 
+       SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$dotest/info")"
        case "$keep_subject" in -k)  SUBJECT="[PATCH] $SUBJECT" ;; esac
-       if test '' != "$SIGNOFF"
-       then
+
+       case "$resume" in
+       '')
+           if test '' != "$SIGNOFF"
+           then
                LAST_SIGNED_OFF_BY=`
-                       sed -ne '/^Signed-off-by: /p' "$dotest/msg-clean" |
-                       tail -n 1
+                   sed -ne '/^Signed-off-by: /p' \
+                   "$dotest/msg-clean" |
+                   tail -n 1
                `
-               ADD_SIGNOFF=$(test "$LAST_SIGNED_OFF_BY" = "$SIGNOFF" || {
+               ADD_SIGNOFF=`
+                   test "$LAST_SIGNED_OFF_BY" = "$SIGNOFF" || {
                    test '' = "$LAST_SIGNED_OFF_BY" && echo
                    echo "$SIGNOFF"
-               })
-       else
+               }`
+           else
                ADD_SIGNOFF=
-       fi
-       {
+           fi
+           {
                echo "$SUBJECT"
                if test -s "$dotest/msg-clean"
                then
@@ -257,8 +303,18 @@ do
                then
                        echo "$ADD_SIGNOFF"
                fi
-       } >"$dotest/final-commit"
+           } >"$dotest/final-commit"
+           ;;
+       *)
+               case "$resolved$interactive" in
+               tt)
+                       # This is used only for interactive view option.
+                       git-diff-index -p --cached HEAD >"$dotest/patch"
+                       ;;
+               esac
+       esac
 
+       resume=
        if test "$interactive" = t
        then
            test -t 0 ||
@@ -270,7 +326,7 @@ do
                echo "--------------------------"
                cat "$dotest/final-commit"
                echo "--------------------------"
-               echo -n "Apply? [y]es/[n]o/[e]dit/[v]iew patch/[a]ccept all "
+               printf "Apply? [y]es/[n]o/[e]dit/[v]iew patch/[a]ccept all "
                read reply
                case "$reply" in
                [yY]*) action=yes ;;
@@ -303,14 +359,34 @@ do
        echo "Applying '$SUBJECT'"
        echo
 
-       git-apply --index "$dotest/patch"; apply_status=$?
+       case "$resolved" in
+       '')
+               git-apply $binary --index $ws "$dotest/patch"
+               apply_status=$?
+               ;;
+       t)
+               # Resolved means the user did all the hard work, and
+               # we do not have to do any patch application.  Just
+               # trust what the user has in the index file and the
+               # working tree.
+               resolved=
+               changed="$(git-diff-index --cached --name-only HEAD)"
+               if test '' = "$changed"
+               then
+                       echo "No changes - did you forget update-index?"
+                       stop_here $this
+               fi
+               apply_status=0
+               ;;
+       esac
+
        if test $apply_status = 1 && test "$threeway" = t
        then
                if (fall_back_3way)
                then
                    # Applying the patch to an earlier tree and merging the
                    # result may have produced the same tree as ours.
-                   changed="$(git-diff-index --cached --name-only -z HEAD)"
+                   changed="$(git-diff-index --cached --name-only HEAD)"
                    if test '' = "$changed"
                    then
                            echo No changes -- Patch already applied.