| #!/bin/sh |
| # |
| # This program resolves merge conflicts in git |
| # |
| # Copyright (c) 2006 Theodore Y. Ts'o |
| # |
| # This file is licensed under the GPL v2, or a later version |
| # at the discretion of Junio C Hamano. |
| # |
| |
| 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 |
| is_symlink () { |
| test "$1" = 120000 |
| } |
| |
| is_submodule () { |
| test "$1" = 160000 |
| } |
| |
| local_present () { |
| test -n "$local_mode" |
| } |
| |
| remote_present () { |
| test -n "$remote_mode" |
| } |
| |
| base_present () { |
| test -n "$base_mode" |
| } |
| |
| cleanup_temp_files () { |
| if test "$1" = --save-backup ; then |
| rm -rf -- "$MERGED.orig" |
| test -e "$BACKUP" && mv -- "$BACKUP" "$MERGED.orig" |
| rm -f -- "$LOCAL" "$REMOTE" "$BASE" |
| else |
| rm -f -- "$LOCAL" "$REMOTE" "$BASE" "$BACKUP" |
| fi |
| } |
| |
| describe_file () { |
| mode="$1" |
| branch="$2" |
| file="$3" |
| |
| printf " {%s}: " "$branch" |
| if test -z "$mode"; then |
| echo "deleted" |
| elif is_symlink "$mode" ; then |
| echo "a symbolic link -> '$(cat "$file")'" |
| elif is_submodule "$mode" ; then |
| echo "submodule commit $file" |
| else |
| if base_present; then |
| echo "modified file" |
| else |
| echo "created file" |
| fi |
| fi |
| } |
| |
| |
| resolve_symlink_merge () { |
| while true; do |
| printf "Use (l)ocal or (r)emote, or (a)bort? " |
| read ans |
| case "$ans" in |
| [lL]*) |
| git checkout-index -f --stage=2 -- "$MERGED" |
| git add -- "$MERGED" |
| cleanup_temp_files --save-backup |
| return 0 |
| ;; |
| [rR]*) |
| git checkout-index -f --stage=3 -- "$MERGED" |
| git add -- "$MERGED" |
| cleanup_temp_files --save-backup |
| return 0 |
| ;; |
| [aA]*) |
| return 1 |
| ;; |
| esac |
| done |
| } |
| |
| resolve_deleted_merge () { |
| while true; do |
| if base_present; then |
| printf "Use (m)odified or (d)eleted file, or (a)bort? " |
| else |
| printf "Use (c)reated or (d)eleted file, or (a)bort? " |
| fi |
| read ans || return 1 |
| case "$ans" in |
| [mMcC]*) |
| git add -- "$MERGED" |
| cleanup_temp_files --save-backup |
| return 0 |
| ;; |
| [dD]*) |
| git rm -- "$MERGED" > /dev/null |
| cleanup_temp_files |
| return 0 |
| ;; |
| [aA]*) |
| return 1 |
| ;; |
| esac |
| done |
| } |
| |
| resolve_submodule_merge () { |
| while true; do |
| printf "Use (l)ocal or (r)emote, or (a)bort? " |
| read ans || return 1 |
| case "$ans" in |
| [lL]*) |
| if ! local_present; then |
| if test -n "$(git ls-tree HEAD -- "$MERGED")"; then |
| # Local isn't present, but it's a subdirectory |
| git ls-tree --full-name -r HEAD -- "$MERGED" | git update-index --index-info || exit $? |
| else |
| test -e "$MERGED" && mv -- "$MERGED" "$BACKUP" |
| git update-index --force-remove "$MERGED" |
| cleanup_temp_files --save-backup |
| fi |
| elif is_submodule "$local_mode"; then |
| stage_submodule "$MERGED" "$local_sha1" |
| else |
| git checkout-index -f --stage=2 -- "$MERGED" |
| git add -- "$MERGED" |
| fi |
| return 0 |
| ;; |
| [rR]*) |
| if ! remote_present; then |
| if test -n "$(git ls-tree MERGE_HEAD -- "$MERGED")"; then |
| # Remote isn't present, but it's a subdirectory |
| git ls-tree --full-name -r MERGE_HEAD -- "$MERGED" | git update-index --index-info || exit $? |
| else |
| test -e "$MERGED" && mv -- "$MERGED" "$BACKUP" |
| git update-index --force-remove "$MERGED" |
| fi |
| elif is_submodule "$remote_mode"; then |
| ! is_submodule "$local_mode" && test -e "$MERGED" && mv -- "$MERGED" "$BACKUP" |
| stage_submodule "$MERGED" "$remote_sha1" |
| else |
| test -e "$MERGED" && mv -- "$MERGED" "$BACKUP" |
| git checkout-index -f --stage=3 -- "$MERGED" |
| git add -- "$MERGED" |
| fi |
| cleanup_temp_files --save-backup |
| return 0 |
| ;; |
| [aA]*) |
| return 1 |
| ;; |
| esac |
| done |
| } |
| |
| stage_submodule () { |
| path="$1" |
| submodule_sha1="$2" |
| mkdir -p "$path" || die "fatal: unable to create directory for module at $path" |
| # Find $path relative to work tree |
| work_tree_root=$(cd_to_toplevel && pwd) |
| work_rel_path=$(cd "$path" && GIT_WORK_TREE="${work_tree_root}" git rev-parse --show-prefix) |
| test -n "$work_rel_path" || die "fatal: unable to get path of module $path relative to work tree" |
| git update-index --add --replace --cacheinfo 160000 "$submodule_sha1" "${work_rel_path%/}" || die |
| } |
| |
| checkout_staged_file () { |
| tmpfile=$(expr "$(git checkout-index --temp --stage="$1" "$2")" : '\([^ ]*\) ') |
| |
| if test $? -eq 0 -a -n "$tmpfile" ; then |
| mv -- "$(git rev-parse --show-cdup)$tmpfile" "$3" |
| fi |
| } |
| |
| merge_file () { |
| MERGED="$1" |
| |
| f=$(git ls-files -u -- "$MERGED") |
| if test -z "$f" ; then |
| if test ! -f "$MERGED" ; then |
| echo "$MERGED: file not found" |
| else |
| echo "$MERGED: file does not need merging" |
| fi |
| return 1 |
| fi |
| |
| ext="$$$(expr "$MERGED" : '.*\(\.[^/]*\)$')" |
| BACKUP="./$MERGED.BACKUP.$ext" |
| LOCAL="./$MERGED.LOCAL.$ext" |
| REMOTE="./$MERGED.REMOTE.$ext" |
| BASE="./$MERGED.BASE.$ext" |
| |
| base_mode=$(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 $1;}') |
| |
| if is_submodule "$local_mode" || is_submodule "$remote_mode"; then |
| echo "Submodule merge conflict for '$MERGED':" |
| local_sha1=$(git ls-files -u -- "$MERGED" | awk '{if ($3==2) print $2;}') |
| remote_sha1=$(git ls-files -u -- "$MERGED" | awk '{if ($3==3) print $2;}') |
| describe_file "$local_mode" "local" "$local_sha1" |
| describe_file "$remote_mode" "remote" "$remote_sha1" |
| resolve_submodule_merge |
| return |
| fi |
| |
| mv -- "$MERGED" "$BACKUP" |
| cp -- "$BACKUP" "$MERGED" |
| |
| base_present && checkout_staged_file 1 "$MERGED" "$BASE" |
| local_present && checkout_staged_file 2 "$MERGED" "$LOCAL" |
| remote_present && checkout_staged_file 3 "$MERGED" "$REMOTE" |
| |
| if test -z "$local_mode" -o -z "$remote_mode"; then |
| echo "Deleted merge conflict for '$MERGED':" |
| describe_file "$local_mode" "local" "$LOCAL" |
| describe_file "$remote_mode" "remote" "$REMOTE" |
| resolve_deleted_merge |
| return |
| fi |
| |
| if is_symlink "$local_mode" || is_symlink "$remote_mode"; then |
| echo "Symbolic link merge conflict for '$MERGED':" |
| describe_file "$local_mode" "local" "$LOCAL" |
| describe_file "$remote_mode" "remote" "$REMOTE" |
| resolve_symlink_merge |
| return |
| fi |
| |
| echo "Normal merge conflict for '$MERGED':" |
| describe_file "$local_mode" "local" "$LOCAL" |
| describe_file "$remote_mode" "remote" "$REMOTE" |
| if "$prompt" = true; then |
| printf "Hit return to start merge resolution tool (%s): " "$merge_tool" |
| read ans || return 1 |
| fi |
| |
| 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" "$MERGED" |
| |
| if test "$merge_keep_temporaries" = "false"; then |
| cleanup_temp_files |
| fi |
| |
| return 1 |
| fi |
| |
| if test "$merge_keep_backup" = "true"; then |
| mv -- "$BACKUP" "$MERGED.orig" |
| else |
| rm -- "$BACKUP" |
| fi |
| |
| git add -- "$MERGED" |
| cleanup_temp_files |
| return 0 |
| } |
| |
| prompt=$(git config --bool mergetool.prompt || echo true) |
| |
| while test $# != 0 |
| do |
| case "$1" in |
| -t|--tool*) |
| case "$#,$1" in |
| *,*=*) |
| merge_tool=$(expr "z$1" : 'z-[^=]*=\(.*\)') |
| ;; |
| 1,*) |
| usage ;; |
| *) |
| merge_tool="$2" |
| shift ;; |
| esac |
| ;; |
| -y|--no-prompt) |
| prompt=false |
| ;; |
| --prompt) |
| prompt=true |
| ;; |
| --) |
| shift |
| break |
| ;; |
| -*) |
| usage |
| ;; |
| *) |
| break |
| ;; |
| esac |
| shift |
| done |
| |
| prompt_after_failed_merge() { |
| while true; do |
| printf "Continue merging other unresolved paths (y/n) ? " |
| read ans || return 1 |
| case "$ans" in |
| |
| [yY]*) |
| return 0 |
| ;; |
| |
| [nN]*) |
| return 1 |
| ;; |
| esac |
| done |
| } |
| |
| if test -z "$merge_tool"; then |
| merge_tool=$(get_merge_tool "$merge_tool") || exit |
| fi |
| merge_keep_backup="$(git config --bool mergetool.keepBackup || echo true)" |
| merge_keep_temporaries="$(git config --bool mergetool.keepTemporaries || echo false)" |
| |
| last_status=0 |
| rollup_status=0 |
| rerere=false |
| |
| files_to_merge() { |
| if test "$rerere" = true |
| then |
| git rerere remaining |
| else |
| git ls-files -u | sed -e 's/^[^ ]* //' | sort -u |
| fi |
| } |
| |
| |
| if test $# -eq 0 ; then |
| cd_to_toplevel |
| |
| if test -e "$GIT_DIR/MERGE_RR" |
| then |
| rerere=true |
| fi |
| |
| files=$(files_to_merge) |
| if test -z "$files" ; then |
| echo "No files need merging" |
| exit 0 |
| fi |
| |
| # Save original stdin |
| exec 3<&0 |
| |
| printf "Merging:\n" |
| printf "$files\n" |
| |
| files_to_merge | |
| while IFS= read i |
| do |
| if test $last_status -ne 0; then |
| prompt_after_failed_merge <&3 || exit 1 |
| fi |
| printf "\n" |
| merge_file "$i" <&3 |
| last_status=$? |
| if test $last_status -ne 0; then |
| rollup_status=1 |
| fi |
| done |
| else |
| while test $# -gt 0; do |
| if test $last_status -ne 0; then |
| prompt_after_failed_merge || exit 1 |
| fi |
| printf "\n" |
| merge_file "$1" |
| last_status=$? |
| if test $last_status -ne 0; then |
| rollup_status=1 |
| fi |
| shift |
| done |
| fi |
| |
| exit $rollup_status |
