log, commands: Add log_colors command

sway/commands.c

@@ -146,6 +146,22 @@ int cmd_set(struct sway_config *config, int argc, char **argv) {
 	return 0;
 }
 
+int cmd_log_colors(struct sway_config *config, int argc, char **argv) {
+	if (argc != 1) {
+		sway_log(L_ERROR, "Invalid log_colors command (expected 1 argument, got %d)", argc);
+		return 1;
+	}
+
+	if (strcasecmp(argv[0], "no") != 0 && strcasecmp(argv[0], "yes") != 0) {
+		sway_log(L_ERROR, "Invalid log_colors command (expected `yes` or `no`, got '%s')", argv[0]);
+		return 1;
+	}
+
+	sway_log_colors(!strcasecmp(argv[0], "yes"));
+	return 0;
+}
+
+
 /* Keep alphabetized */
 struct cmd_handler handlers[] = {
 	{ "bindsym", cmd_bindsym },
@@ -153,6 +169,7 @@ struct cmd_handler handlers[] = {
 	{ "exit", cmd_exit },
 	{ "focus_follows_mouse", cmd_focus_follows_mouse },
 	{ "layout", cmd_layout },
+	{ "log_colors", cmd_log_colors },
 	{ "set", cmd_set },
 };
 

sway/log.c

@@ -17,6 +17,10 @@ void init_log(int verbosity) {
 	v = verbosity;
 }
 
+void sway_log_colors(int mode) {
+    colored = (mode == 1) ? 1 : 0;
+}
+
 void sway_abort(char *format, ...) {
 	fprintf(stderr, "ERROR: ");
 	va_list args;
@@ -33,11 +37,18 @@ void sway_log(int verbosity, char* format, ...) {
 		if (c > sizeof(verbosity_colors) / sizeof(char *)) {
 			c = sizeof(verbosity_colors) / sizeof(char *) - 1;
 		}
-		fprintf(stderr, verbosity_colors[c]);
+
+		if(colored) {
+			fprintf(stderr, verbosity_colors[c]);
+		}
+
 		va_list args;
 		va_start(args, format);
 		vfprintf(stderr, format, args);
 		va_end(args);
-		fprintf(stderr, "\x1B[0m\n");
+
+		if(colored) {
+			fprintf(stderr, "\x1B[0m\n");
+		}
 	}
 }

sway/log.h

@@ -9,6 +9,7 @@ typedef enum {
 } log_importance_t;
 
 void init_log(int verbosity);
+void sway_log_colors(int mode);
 void sway_log(int verbosity, char* format, ...);
 void sway_abort(char* format, ...);