David Aguilar <dav...@gmail.com> writes:
> +filter_tools () {
> + filter="$1"
> + prefix="$2"
> + (
> + cd "$MERGE_TOOLS_DIR" &&
> + for i in *
> + do
> + echo "$i"
> + done
> + ) | sort | while read tool
> + do
> + setup_tool "$tool" 2>/dev/null &&
> + (eval "$filter" "$tool") &&
> + printf "$prefix$tool\n"
> + done
> +}
> +
> diff_mode() {
> test "$TOOL_MODE" = diff
> }
> @@ -199,27 +226,13 @@ list_merge_tool_candidates () {
> }
>
> show_tool_help () {
> - unavailable= available= LF='
> -'
> - for i in "$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=${TOOL_MODE}tool
> + available=$(filter_tools 'mode_ok && is_available' '\t\t')
> + unavailable=$(filter_tools 'mode_ok && ! is_available' '\t\t')
> if test -n "$available"
> then
> echo "'git $cmd_name --tool=<tool>' may be set to one of the
> following:"
> - echo "$available" | sort | sed -e 's/^/ /'
> + printf "$available"
This may happen to be safe as available will not have anything with
a per-cent % in it, but is not a good discipline in general.
printf "%s" "$available"
If you are giving filter_tools an optional "prefix-per-line", I do
not think it is too much of a stretch to introduce another optional
"perfix for the whole thing" and let this call site say something
like this:
cmd_name=${TOOL_MODE}tool
show_tool_names 'mode_ok && is_available' '\t\t' \
"'git $cmd_name --tool=<tool>' may be set to one of these:"
show_tool_names 'mode_ok && !is_available' '\t\t' \
"These are valid but not available:"
without any of the above logic (and the same for unav). It may look like this:
show_tool_names () {
condition=${1?condition} per_line_prefix=${2:-} preamble=${3:-}
( cd "$MERGE_TOOLS_DIR && ls -1 * ) |
while read toolname
do
if setup_tool "$toolname" 2>/dev/null && (eval "$condition")
then
if test -n "$preamble"
then
echo "$preamble"
preamble=
fi
printf "%s%s\n" "$prefix" "$toolname"
fi
done
}
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