commit 1853ee508a59ddba850679262f271c208738f207
from: Omar Polo <op@omarpolo.com>
date: Thu Jul 15 14:35:39 2021 UTC

add -C/--colors: dumps all available colors

commit - dc7619245dfed3a4b315225e08e20016fa51919b
commit + 1853ee508a59ddba850679262f271c208738f207
blob - 8d35fc4661b3de028d157dd30c33f1d6c924a3cb
blob + 11c9d552b44915fbbf3dea7bd236a14ef65d4c89
--- telescope.c
+++ telescope.c
@@ -16,12 +16,13 @@
 #include "ui.h"
 
 static struct option longopts[] = {
+	{"colors",	no_argument,	NULL,	'c'},
 	{"help",	no_argument,	NULL,	'h'},
 	{"version",	no_argument,	NULL,	'v'},
 	{NULL,		0,		NULL,	0},
 };
 
-static const char *opts = "c:hnT:v";
+static const char *opts = "Cc:hnT:v";
 
 static struct imsgev	*iev_fs, *iev_net;
 
@@ -770,6 +771,8 @@ main(int argc, char * const *argv)
 
 	while ((ch = getopt_long(argc, argv, opts, longopts, NULL)) != -1) {
 		switch (ch) {
+		case 'C':
+			exit(ui_print_colors());
 		case 'c':
 			fail = 1;
 			strlcpy(path, optarg, sizeof(path));
blob - a8967f141b318cb77d7a1810d4f9997d5b4faac8
blob + 7ed662f1b4a235e66747c32619e0312ac9c0b31e
--- ui.c
+++ ui.c
@@ -1121,6 +1121,48 @@ new_tab(const char *url)
 
 	load_url_in_tab(tab, url);
 	return tab;
+}
+
+int
+ui_print_colors(void)
+{
+	int colors = 0, pairs = 0, can_change = 0;
+	int columns = 16, lines, color, i, j;
+
+	initscr();
+	if (has_colors()) {
+		start_color();
+		use_default_colors();
+
+		colors = COLORS;
+		pairs = COLOR_PAIRS;
+		can_change = can_change_color();
+	}
+	endwin();
+
+	printf("Term info:\n");
+	printf("TERM=%s COLORS=%d COLOR_PAIRS=%d can_change_colors=%d\n",
+	    getenv("TERM"), colors, pairs, can_change);
+	printf("\n");
+
+	if (colors == 0) {
+		printf("No color support\n");
+		return 0;
+	}
+
+	printf("Available colors:\n\n");
+	lines = (colors - 1) / columns + 1;
+	color = 0;
+	for (i = 0; i < lines; ++i) {
+		for (j = 0; j < columns; ++j, ++color) {
+			printf("\033[0;38;5;%dm %03d", color, color);
+		}
+		printf("\n");
+	}
+
+	printf("\033[0m");
+	fflush(stdout);
+	return 0;
 }
 
 int
blob - bc8d51aa7eee03614320e152d9bd2637e11e7b3f
blob + 27a5a9566994a2bb2d1242a03d79a4df03d1dcd3
--- ui.h
+++ ui.h
@@ -110,6 +110,7 @@ struct tab	*current_tab(void);
 struct buffer	*current_buffer(void);
 struct tab	*new_tab(const char *);
 unsigned int	 tab_new_id(void);
+int		 ui_print_colors(void);
 int		 ui_init(void);
 void		 ui_on_tab_loaded(struct tab *);
 void		 ui_on_tab_refresh(struct tab *);