/*
 * SVG coloring
 *
 * Copyright (C) 2017  Patrick McDermott
 *
 * This file is part of Marquee.
 *
 * Marquee is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Marquee is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Marquee.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "svg.h"

#include <string.h>

#include <glib.h>

gboolean
mq_svg_is_color_valid(const gchar *color)
{
	gsize i;

	if (!color || color[0] != '#') {
		return FALSE;
	}
	for (i = 1; i <= 6; ++i) {
		if (!g_ascii_isxdigit(color[i])) {
			return FALSE;
		}
	}
	if (color[7] != '\0') {
		return FALSE;
	}
	return TRUE;
}

gchar *
mq_svg_set_color(const gchar *svg, const gchar *color)
{
	gchar *colored_svg;
	gchar *occurrence;
	gsize  i;

	colored_svg = g_strdup(svg);

	occurrence = colored_svg;
	while ((occurrence = strstr(occurrence, "@COLOR@"))) {
		for (i = 0; i < 7; ++i) {
			occurrence[i] = color[i];
		}
		occurrence += i;
	}

	return colored_svg;
}