verify-tag: migrate to parse-options
[gitweb.git] / git-mergetool.sh
index b4d2432f02097bf9d75557a28b55200a223554f7..b52a7410bcb7b37dce0f4d6213dddedd2c1e42e7 100755 (executable)
@@ -11,7 +11,9 @@
 USAGE='[--tool=tool] [-y|--no-prompt|--prompt] [file to merge] ...'
 SUBDIRECTORY_OK=Yes
 OPTIONS_SPEC=
+TOOL_MODE=merge
 . git-sh-setup
+. git-mergetool--lib
 require_work_tree
 
 # Returns true if the mode reflects a symlink
@@ -110,22 +112,6 @@ resolve_deleted_merge () {
        done
 }
 
-check_unchanged () {
-    if test "$MERGED" -nt "$BACKUP" ; then
-       status=0;
-    else
-       while true; do
-           echo "$MERGED seems unchanged."
-           printf "Was the merge successful? [y/n] "
-           read answer < /dev/tty
-           case "$answer" in
-               y*|Y*) status=0; break ;;
-               n*|N*) status=1; break ;;
-           esac
-       done
-    fi
-}
-
 checkout_staged_file () {
     tmpfile=$(expr "$(git checkout-index --temp --stage="$1" "$2")" : '\([^    ]*\)    ')
 
@@ -137,7 +123,7 @@ checkout_staged_file () {
 merge_file () {
     MERGED="$1"
 
-    f=`git ls-files -u -- "$MERGED"`
+    f=$(git ls-files -u -- "$MERGED")
     if test -z "$f" ; then
        if test ! -f "$MERGED" ; then
            echo "$MERGED: file not found"
@@ -156,9 +142,9 @@ merge_file () {
     mv -- "$MERGED" "$BACKUP"
     cp -- "$BACKUP" "$MERGED"
 
-    base_mode=`git ls-files -u -- "$MERGED" | awk '{if ($3==1) print $1;}'`
-    local_mode=`git ls-files -u -- "$MERGED" | awk '{if ($3==2) print $1;}'`
-    remote_mode=`git ls-files -u -- "$MERGED" | awk '{if ($3==3) print $1;}'`
+    base_mode=$(git ls-files -u -- "$MERGED" | awk '{if ($3==1) print $1;}')
+    local_mode=$(git ls-files -u -- "$MERGED" | awk '{if ($3==2) print $1;}')
+    remote_mode=$(git ls-files -u -- "$MERGED" | awk '{if ($3==3) print $1;}')
 
     base_present   && checkout_staged_file 1 "$MERGED" "$BASE"
     local_present  && checkout_staged_file 2 "$MERGED" "$LOCAL"
@@ -188,107 +174,13 @@ merge_file () {
        read ans
     fi
 
-    case "$merge_tool" in
-       kdiff3)
-           if base_present ; then
-               ("$merge_tool_path" --auto --L1 "$MERGED (Base)" --L2 "$MERGED (Local)" --L3 "$MERGED (Remote)" \
-                   -o "$MERGED" "$BASE" "$LOCAL" "$REMOTE" > /dev/null 2>&1)
-           else
-               ("$merge_tool_path" --auto --L1 "$MERGED (Local)" --L2 "$MERGED (Remote)" \
-                   -o "$MERGED" "$LOCAL" "$REMOTE" > /dev/null 2>&1)
-           fi
-           status=$?
-           ;;
-       tkdiff)
-           if base_present ; then
-               "$merge_tool_path" -a "$BASE" -o "$MERGED" "$LOCAL" "$REMOTE"
-           else
-               "$merge_tool_path" -o "$MERGED" "$LOCAL" "$REMOTE"
-           fi
-           status=$?
-           ;;
-       meld)
-           touch "$BACKUP"
-           "$merge_tool_path" "$LOCAL" "$MERGED" "$REMOTE"
-           check_unchanged
-           ;;
-       vimdiff)
-           touch "$BACKUP"
-           "$merge_tool_path" -d -c "wincmd l" "$LOCAL" "$MERGED" "$REMOTE"
-           check_unchanged
-           ;;
-       gvimdiff)
-           touch "$BACKUP"
-           "$merge_tool_path" -d -c "wincmd l" -f "$LOCAL" "$MERGED" "$REMOTE"
-           check_unchanged
-           ;;
-       xxdiff)
-           touch "$BACKUP"
-           if base_present ; then
-               "$merge_tool_path" -X --show-merged-pane \
-                   -R 'Accel.SaveAsMerged: "Ctrl-S"' \
-                   -R 'Accel.Search: "Ctrl+F"' \
-                   -R 'Accel.SearchForward: "Ctrl-G"' \
-                   --merged-file "$MERGED" "$LOCAL" "$BASE" "$REMOTE"
-           else
-               "$merge_tool_path" -X --show-merged-pane \
-                   -R 'Accel.SaveAsMerged: "Ctrl-S"' \
-                   -R 'Accel.Search: "Ctrl+F"' \
-                   -R 'Accel.SearchForward: "Ctrl-G"' \
-                   --merged-file "$MERGED" "$LOCAL" "$REMOTE"
-           fi
-           check_unchanged
-           ;;
-       opendiff)
-           touch "$BACKUP"
-           if base_present; then
-               "$merge_tool_path" "$LOCAL" "$REMOTE" -ancestor "$BASE" -merge "$MERGED" | cat
-           else
-               "$merge_tool_path" "$LOCAL" "$REMOTE" -merge "$MERGED" | cat
-           fi
-           check_unchanged
-           ;;
-       ecmerge)
-           touch "$BACKUP"
-           if base_present; then
-               "$merge_tool_path" "$BASE" "$LOCAL" "$REMOTE" --default --mode=merge3 --to="$MERGED"
-           else
-               "$merge_tool_path" "$LOCAL" "$REMOTE" --default --mode=merge2 --to="$MERGED"
-           fi
-           check_unchanged
-           ;;
-       emerge)
-           if base_present ; then
-               "$merge_tool_path" -f emerge-files-with-ancestor-command "$LOCAL" "$REMOTE" "$BASE" "$(basename "$MERGED")"
-           else
-               "$merge_tool_path" -f emerge-files-command "$LOCAL" "$REMOTE" "$(basename "$MERGED")"
-           fi
-           status=$?
-           ;;
-       tortoisemerge)
-           if base_present ; then
-               touch "$BACKUP"
-               "$merge_tool_path" -base:"$BASE" -mine:"$LOCAL" -theirs:"$REMOTE" -merged:"$MERGED"
-               check_unchanged
-           else
-               echo "TortoiseMerge cannot be used without a base" 1>&2
-               status=1
-           fi
-           ;;
-       *)
-           if test -n "$merge_tool_cmd"; then
-               if test "$merge_tool_trust_exit_code" = "false"; then
-                   touch "$BACKUP"
-                   ( eval $merge_tool_cmd )
-                   check_unchanged
-               else
-                   ( eval $merge_tool_cmd )
-                   status=$?
-               fi
-           fi
-           ;;
-    esac
-    if test "$status" -ne 0; then
+    if base_present; then
+           present=true
+    else
+           present=false
+    fi
+
+    if ! run_merge_tool "$merge_tool" "$present"; then
        echo "merge of $MERGED failed" 1>&2
        mv -- "$BACKUP" "$MERGED"
 
@@ -318,7 +210,7 @@ do
        -t|--tool*)
            case "$#,$1" in
                *,*=*)
-                   merge_tool=`expr "z$1" : 'z-[^=]*=\(.*\)'`
+                   merge_tool=$(expr "z$1" : 'z-[^=]*=\(.*\)')
                    ;;
                1,*)
                    usage ;;
@@ -347,44 +239,6 @@ do
     shift
 done
 
-valid_custom_tool()
-{
-    merge_tool_cmd="$(git config mergetool.$1.cmd)"
-    test -n "$merge_tool_cmd"
-}
-
-valid_tool() {
-       case "$1" in
-               kdiff3 | tkdiff | xxdiff | meld | opendiff | emerge | vimdiff | gvimdiff | ecmerge | tortoisemerge)
-                       ;; # happy
-               *)
-                       if ! valid_custom_tool "$1"; then
-                               return 1
-                       fi
-                       ;;
-       esac
-}
-
-init_merge_tool_path() {
-       merge_tool_path=`git config mergetool.$1.path`
-       if test -z "$merge_tool_path" ; then
-               case "$1" in
-                       vimdiff)
-                               merge_tool_path=vim
-                               ;;
-                       gvimdiff)
-                               merge_tool_path=gvim
-                               ;;
-                       emerge)
-                               merge_tool_path=emacs
-                               ;;
-                       *)
-                               merge_tool_path=$1
-                               ;;
-               esac
-       fi
-}
-
 prompt_after_failed_merge() {
     while true; do
        printf "Continue merging other unresolved paths (y/n) ? "
@@ -403,67 +257,16 @@ prompt_after_failed_merge() {
 }
 
 if test -z "$merge_tool"; then
-    merge_tool=`git config merge.tool`
-    if test -n "$merge_tool" && ! valid_tool "$merge_tool"; then
-           echo >&2 "git config option merge.tool set to unknown tool: $merge_tool"
-           echo >&2 "Resetting to default..."
-           unset merge_tool
-    fi
-fi
-
-if test -z "$merge_tool" ; then
-    if test -n "$DISPLAY"; then
-        if test -n "$GNOME_DESKTOP_SESSION_ID" ; then
-            merge_tool_candidates="meld kdiff3 tkdiff xxdiff tortoisemerge gvimdiff diffuse"
-        else
-            merge_tool_candidates="kdiff3 tkdiff xxdiff meld tortoisemerge gvimdiff diffuse"
-        fi
-    fi
-    if echo "${VISUAL:-$EDITOR}" | grep 'emacs' > /dev/null 2>&1; then
-        merge_tool_candidates="$merge_tool_candidates emerge opendiff vimdiff"
-    elif echo "${VISUAL:-$EDITOR}" | grep 'vim' > /dev/null 2>&1; then
-        merge_tool_candidates="$merge_tool_candidates vimdiff opendiff emerge"
-    else
-        merge_tool_candidates="$merge_tool_candidates opendiff emerge vimdiff"
-    fi
-    echo "merge tool candidates: $merge_tool_candidates"
-    for i in $merge_tool_candidates; do
-        init_merge_tool_path $i
-        if type "$merge_tool_path" > /dev/null 2>&1; then
-            merge_tool=$i
-            break
-        fi
-    done
-    if test -z "$merge_tool" ; then
-       echo "No known merge resolution program available."
-       exit 1
-    fi
-else
-    if ! valid_tool "$merge_tool"; then
-        echo >&2 "Unknown merge_tool $merge_tool"
-        exit 1
-    fi
-
-    init_merge_tool_path "$merge_tool"
-
-    merge_keep_backup="$(git config --bool merge.keepBackup || echo true)"
-    merge_keep_temporaries="$(git config --bool mergetool.keepTemporaries || echo false)"
-
-    if test -z "$merge_tool_cmd" && ! type "$merge_tool_path" > /dev/null 2>&1; then
-        echo "The merge tool $merge_tool is not available as '$merge_tool_path'"
-        exit 1
-    fi
-
-    if ! test -z "$merge_tool_cmd"; then
-        merge_tool_trust_exit_code="$(git config --bool mergetool.$merge_tool.trustExitCode || echo false)"
-    fi
+    merge_tool=$(get_merge_tool "$merge_tool") || exit
 fi
+merge_keep_backup="$(git config --bool mergetool.keepBackup || echo true)"
+merge_keep_temporaries="$(git config --bool mergetool.keepTemporaries || echo false)"
 
 last_status=0
 rollup_status=0
 
 if test $# -eq 0 ; then
-    files=`git ls-files -u | sed -e 's/^[^     ]*      //' | sort -u`
+    files=$(git ls-files -u | sed -e 's/^[^    ]*      //' | sort -u)
     if test -z "$files" ; then
        echo "No files need merging"
        exit 0