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Diffstat (limited to 'git-mergetool--lib.sh')
-rw-r--r--git-mergetool--lib.sh104
1 files changed, 88 insertions, 16 deletions
diff --git a/git-mergetool--lib.sh b/git-mergetool--lib.sh
index f013a03506..211ffe5d32 100644
--- a/git-mergetool--lib.sh
+++ b/git-mergetool--lib.sh
@@ -1,5 +1,7 @@
#!/bin/sh
# git-mergetool--lib is a library for common merge tool functions
+MERGE_TOOLS_DIR=$(git --exec-path)/mergetools
+
diff_mode() {
test "$TOOL_MODE" = diff
}
@@ -44,34 +46,51 @@ valid_tool () {
}
setup_tool () {
- case "$1" in
- vim*|gvim*)
- tool=vim
- ;;
- *)
- tool="$1"
- ;;
- esac
- mergetools="$(git --exec-path)/mergetools"
+ tool="$1"
+
+ # Fallback definitions, to be overriden by tools.
+ can_merge () {
+ return 0
+ }
+
+ can_diff () {
+ return 0
+ }
+
+ diff_cmd () {
+ status=1
+ return $status
+ }
- # Load the default definitions
- . "$mergetools/defaults"
- if ! test -f "$mergetools/$tool"
+ merge_cmd () {
+ status=1
+ return $status
+ }
+
+ translate_merge_tool_path () {
+ echo "$1"
+ }
+
+ if ! test -f "$MERGE_TOOLS_DIR/$tool"
then
- return 1
+ # Use a special return code for this case since we want to
+ # source "defaults" even when an explicit tool path is
+ # configured since the user can use that to override the
+ # default path in the scriptlet.
+ return 2
fi
# Load the redefined functions
- . "$mergetools/$tool"
+ . "$MERGE_TOOLS_DIR/$tool"
if merge_mode && ! can_merge
then
echo "error: '$tool' can not be used to resolve merges" >&2
- exit 1
+ return 1
elif diff_mode && ! can_diff
then
echo "error: '$tool' can only be used to resolve merges" >&2
- exit 1
+ return 1
fi
return 0
}
@@ -101,6 +120,19 @@ run_merge_tool () {
# Bring tool-specific functions into scope
setup_tool "$1"
+ exitcode=$?
+ case $exitcode in
+ 0)
+ :
+ ;;
+ 2)
+ # The configured tool is not a built-in tool.
+ test -n "$merge_tool_path" || return 1
+ ;;
+ *)
+ return $exitcode
+ ;;
+ esac
if merge_mode
then
@@ -174,6 +206,46 @@ list_merge_tool_candidates () {
esac
}
+show_tool_help () {
+ unavailable= available= LF='
+'
+ for i in "$MERGE_TOOLS_DIR"/*
+ do
+ tool=$(basename "$i")
+ setup_tool "$tool" 2>/dev/null || continue
+
+ merge_tool_path=$(translate_merge_tool_path "$tool")
+ if type "$merge_tool_path" >/dev/null 2>&1
+ then
+ available="$available$tool$LF"
+ else
+ unavailable="$unavailable$tool$LF"
+ fi
+ done
+
+ cmd_name=${TOOL_MODE}tool
+ if test -n "$available"
+ then
+ echo "'git $cmd_name --tool=<tool>' may be set to one of the following:"
+ echo "$available" | sort | sed -e 's/^/ /'
+ else
+ echo "No suitable tool for 'git $cmd_name --tool=<tool>' found."
+ fi
+ if test -n "$unavailable"
+ then
+ echo
+ echo 'The following tools are valid, but not currently available:'
+ echo "$unavailable" | sort | sed -e 's/^/ /'
+ fi
+ if test -n "$unavailable$available"
+ then
+ echo
+ echo "Some of the tools listed above only work in a windowed"
+ echo "environment. If run in a terminal-only session, they will fail."
+ fi
+ exit 0
+}
+
guess_merge_tool () {
list_merge_tool_candidates
echo >&2 "merge tool candidates: $tools"