[PATCH v4 10/11] built-in add -i: use color in the main loop

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From: Slavica Djukic <slawica92@xxxxxxxxxxx>

The error messages as well as the unique prefixes are colored in `git
add -i` by default; We need to do the same in the built-in version.

Signed-off-by: Slavica Djukic <slawica92@xxxxxxxxxxx>
Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
 add-interactive.c | 37 ++++++++++++++++++++++++++++++++-----
 1 file changed, 32 insertions(+), 5 deletions(-)

diff --git a/add-interactive.c b/add-interactive.c
index 710317e599..a343195a67 100644
--- a/add-interactive.c
+++ b/add-interactive.c
@@ -12,6 +12,9 @@ struct add_i_state {
 	int use_color;
 	char header_color[COLOR_MAXLEN];
 	char help_color[COLOR_MAXLEN];
+	char prompt_color[COLOR_MAXLEN];
+	char error_color[COLOR_MAXLEN];
+	char reset_color[COLOR_MAXLEN];
 };
 
 static void init_color(struct repository *r, struct add_i_state *s,
@@ -45,6 +48,9 @@ static int init_add_i_state(struct repository *r, struct add_i_state *s)
 
 	init_color(r, s, "header", s->header_color, GIT_COLOR_BOLD);
 	init_color(r, s, "help", s->help_color, GIT_COLOR_BOLD_RED);
+	init_color(r, s, "prompt", s->prompt_color, GIT_COLOR_BOLD_BLUE);
+	init_color(r, s, "error", s->error_color, GIT_COLOR_BOLD_RED);
+	init_color(r, s, "reset", s->reset_color, GIT_COLOR_RESET);
 
 	return 0;
 }
@@ -134,7 +140,8 @@ static ssize_t list_and_choose(struct prefix_item **items, size_t nr,
 
 		list(items, nr, s, &opts->list_opts);
 
-		printf("%s%s", opts->prompt, "> ");
+		color_fprintf(stdout, s->prompt_color, "%s", opts->prompt);
+		fputs("> ", stdout);
 		fflush(stdout);
 
 		if (strbuf_getline(&input, stdin) == EOF) {
@@ -175,7 +182,8 @@ static ssize_t list_and_choose(struct prefix_item **items, size_t nr,
 				index = find_unique(p, items, nr);
 
 			if (index < 0 || index >= nr)
-				printf(_("Huh (%s)?\n"), p);
+				color_fprintf_ln(stdout, s->error_color,
+						 _("Huh (%s)?"), p);
 			else {
 				res = index;
 				break;
@@ -421,15 +429,21 @@ static int run_status(struct add_i_state *s, const struct pathspec *ps,
 	return 0;
 }
 
+struct print_command_item_data {
+	const char *color, *reset;
+};
+
 static void print_command_item(int i, struct prefix_item *item,
 			       void *print_command_item_data)
 {
+	struct print_command_item_data *d = print_command_item_data;
+
 	if (!item->prefix_length ||
 	    !is_valid_prefix(item->name, item->prefix_length))
 		printf(" %2d: %s", i + 1, item->name);
 	else
-		printf(" %3d: [%.*s]%s", i + 1,
-		       (int)item->prefix_length, item->name,
+		printf(" %2d: %s%.*s%s%s", i + 1,
+		       d->color, (int)item->prefix_length, item->name, d->reset,
 		       item->name + item->prefix_length);
 }
 
@@ -454,8 +468,9 @@ static void command_prompt_help(struct add_i_state *s)
 int run_add_i(struct repository *r, const struct pathspec *ps)
 {
 	struct add_i_state s = { NULL };
+	struct print_command_item_data data;
 	struct list_and_choose_options main_loop_opts = {
-		{ 4, N_("*** Commands ***"), print_command_item, NULL },
+		{ 4, N_("*** Commands ***"), print_command_item, &data },
 		N_("What now"), command_prompt_help
 	};
 	struct command_item
@@ -478,6 +493,18 @@ int run_add_i(struct repository *r, const struct pathspec *ps)
 	if (init_add_i_state(r, &s))
 		return error("could not parse `add -i` config");
 
+	/*
+	 * When color was asked for, use the prompt color for
+	 * highlighting, otherwise use square brackets.
+	 */
+	if (s.use_color) {
+		data.color = s.prompt_color;
+		data.reset = s.reset_color;
+	} else {
+		data.color = "[";
+		data.reset = "]";
+	}
+
 	strbuf_addstr(&header, "      ");
 	strbuf_addf(&header, print_file_item_data.modified_fmt,
 		    _("staged"), _("unstaged"), _("path"));
-- 
gitgitgadget




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