Merge branch 'wip/color-parsing-improvements'

src/highlighting.c

@@ -219,9 +219,7 @@ static gboolean read_named_style(const gchar *named_style, GeanyLexerStyle *styl
 static void parse_color(GKeyFile *kf, const gchar *str, gint *clr)
 {
 	gint c;
-	gchar hex_clr[9] = { 0 };
 	gchar *named_color = NULL;
-	const gchar *start;
 
 	g_return_if_fail(clr != NULL);
 
@@ -232,35 +230,13 @@ static void parse_color(GKeyFile *kf, const gchar *str, gint *clr)
 	if (named_color)
 		str = named_color;
 
-	if (str[0] == '#')
-		start = str + 1;
-	else if (strlen(str) > 1 && str[0] == '0' && (str[1] == 'x' || str[1] == 'X'))
-		start = str + 2;
-	else
-	{
+	c = utils_parse_color(str);
+	if (c == -1)
 		geany_debug("Bad color '%s'", str);
-		g_free(named_color);
-		return;
-	}
-
-	if (strlen(start) == 3)
-	{
-		g_snprintf(hex_clr, 9, "0x%c%c%c%c%c%c", start[0], start[0],
-			start[1], start[1], start[2], start[2]);
-	}
 	else
-		g_snprintf(hex_clr, 9, "0x%s", start);
-
-	g_free(named_color);
-
-	c = utils_strtod(hex_clr, NULL, FALSE);
-
-	if (c > -1)
-	{
 		*clr = c;
-		return;
-	}
-	geany_debug("Bad color '%s'", str);
+
+	g_free(named_color);
 }
 
 

src/sciwrappers.c

@@ -69,7 +69,7 @@ void sci_set_line_numbers(ScintillaObject *sci, gboolean set, gint extra_width)
 
 void sci_set_mark_long_lines(ScintillaObject *sci, gint type, gint column, const gchar *colour)
 {
-	glong colour_val = utils_strtod(colour, NULL, TRUE); /* Scintilla uses a "long" value */
+	glong colour_val = utils_parse_color(colour); /* Scintilla uses a "long" value */
 
 	if (column == 0)
 		type = 2;

src/utils.c

@@ -964,50 +964,55 @@ gchar *utils_make_human_readable_str(guint64 size, gulong block_size,
 }
 
 
- static guint utils_get_value_of_hex(const gchar ch)
+static gboolean read_hex(const gchar *s, guint len, gint *h)
 {
-	if (ch >= '0' && ch <= '9')
-		return ch - '0';
-	else if (ch >= 'A' && ch <= 'F')
-		return ch - 'A' + 10;
-	else if (ch >= 'a' && ch <= 'f')
-		return ch - 'a' + 10;
-	else
-		return 0;
+	guint i;
+	*h = 0;
+	for (i = 0; i < len; i++)
+	{
+		if (! g_ascii_isxdigit(s[i]))
+			return FALSE;
+		*h = (*h << 4) | g_ascii_xdigit_value(s[i]);
+	}
+	return TRUE;
 }
 
 
-/* utils_strtod() converts a string containing a hex colour ("0x00ff00") into an integer.
- * Basically, it is the same as strtod() would do, but it does not understand hex colour values,
- * before ANSI-C99. With with_route set, it takes strings of the format "#00ff00".
- * Returns -1 on failure. */
-gint utils_strtod(const gchar *source, gchar **end, gboolean with_route)
+/* Converts a string containing an hex or HTML RGB color with 1 or 2 digits per
+ * channel (0x00ff11, 0x0f1, #00ff11, #0f1) to an integer.
+ * Returns an integer color in the format BBGGRR or -1 on failure. */
+gint utils_parse_color(const gchar *source)
 {
-	guint red, green, blue, offset = 0;
+	gint r, g, b;
+	guint len;
 
 	g_return_val_if_fail(source != NULL, -1);
 
-	if (with_route && (strlen(source) != 7 || source[0] != '#'))
+	if (source[0] == '#')
+		source++;
+	else if (source[0] == '0' && (source[1] == 'x' || source[1] == 'X'))
+		source += 2;
+	else
 		return -1;
-	else if (! with_route && (strlen(source) != 8 || source[0] != '0' ||
-		(source[1] != 'x' && source[1] != 'X')))
+
+	len = strlen(source);
+	if (len % 3 || len < 3 || len > 6)
+		return -1;
+	len /= 3;
+
+	if (! read_hex(source, len, &r) ||
+		! read_hex(source + len, len, &g) ||
+		! read_hex(source + len * 2, len, &b))
+		return -1;
+
+	if (len < 2)
 	{
-		return -1;
+		r |= r << 4;
+		g |= g << 4;
+		b |= b << 4;
 	}
 
-	/* offset is set to 1 when the string starts with 0x, otherwise it starts with #
-	 * and we don't need to increase the index */
-	if (! with_route)
-		offset = 1;
-
-	red = utils_get_value_of_hex(
-					source[1 + offset]) * 16 + utils_get_value_of_hex(source[2 + offset]);
-	green = utils_get_value_of_hex(
-					source[3 + offset]) * 16 + utils_get_value_of_hex(source[4 + offset]);
-	blue = utils_get_value_of_hex(
-					source[5 + offset]) * 16 + utils_get_value_of_hex(source[6 + offset]);
-
-	return (red | (green << 8) | (blue << 16));
+	return (r | (g << 8) | (b << 16));
 }
 
 

src/utils.h

@@ -220,7 +220,7 @@ void utils_beep(void);
 gchar *utils_make_human_readable_str(guint64 size, gulong block_size,
 									 gulong display_unit);
 
-gint utils_strtod(const gchar *source, gchar **end, gboolean with_route);
+gint utils_parse_color(const gchar *source);
 
 gchar *utils_get_current_time_string(void);
 

src/win32.c

@@ -565,7 +565,7 @@ void win32_show_color_dialog(const gchar *colour)
 	cc.lStructSize = sizeof(cc);
 	cc.hwndOwner = GDK_WINDOW_HWND(gtk_widget_get_window(main_widgets.window));
 	cc.lpCustColors = (LPDWORD) acr_cust_clr;
-	cc.rgbResult = (colour != NULL) ? utils_strtod(colour, NULL, colour[0] == '#') : 0;
+	cc.rgbResult = (colour != NULL) ? utils_parse_color(colour) : 0;
 	cc.Flags = CC_FULLOPEN | CC_RGBINIT;
 
 	if (ChooseColor(&cc))