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-rwxr-xr-xgit-mergetool.sh425
1 files changed, 425 insertions, 0 deletions
diff --git a/git-mergetool.sh b/git-mergetool.sh
new file mode 100755
index 0000000000..332528ff45
--- /dev/null
+++ b/git-mergetool.sh
@@ -0,0 +1,425 @@
+#!/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] [--tool-help] [-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 $file"
+ elif base_present
+ then
+ echo "modified file"
+ else
+ echo "created file"
+ fi
+}
+
+resolve_symlink_merge () {
+ while true
+ do
+ printf "Use (l)ocal or (r)emote, or (a)bort? "
+ read ans || return 1
+ case "$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" 2>/dev/null)" \
+ : '\([^ ]*\) ')
+
+ if test $? -eq 0 -a -n "$tmpfile"
+ then
+ mv -- "$(git rev-parse --show-cdup)$tmpfile" "$3"
+ else
+ >"$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" "$MERGED"
+
+ checkout_staged_file 1 "$MERGED" "$BASE"
+ checkout_staged_file 2 "$MERGED" "$LOCAL"
+ checkout_staged_file 3 "$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 "$1" in
+ --tool-help)
+ show_tool_help
+ ;;
+ -t|--tool*)
+ case "$#,$1" in
+ *,*=*)
+ merge_tool=$(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
+files=
+
+if test $# -eq 0
+then
+ cd_to_toplevel
+
+ if test -e "$GIT_DIR/MERGE_RR"
+ then
+ files=$(git rerere remaining)
+ else
+ files=$(git ls-files -u | sed -e 's/^[^ ]* //' | sort -u)
+ fi
+else
+ files=$(git ls-files -u -- "$@" | sed -e 's/^[^ ]* //' | sort -u)
+fi
+
+if test -z "$files"
+then
+ echo "No files need merging"
+ exit 0
+fi
+
+printf "Merging:\n"
+printf "%s\n" "$files"
+
+IFS='
+'
+for i in $files
+do
+ if test $last_status -ne 0
+ then
+ prompt_after_failed_merge || exit 1
+ fi
+ printf "\n"
+ merge_file "$i"
+ last_status=$?
+ if test $last_status -ne 0
+ then
+ rollup_status=1
+ fi
+done
+
+exit $rollup_status
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 03:43:30 +0000