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app: fix a few bug in text markup (de)serialization. 

- g_str_equal() doesn't have the proper signature for g_slist_find_custom() so
  current code was never processing multiple subfonts in a markup layer text.
- Escape the font name parsed from the XCF. For old XCF format, it could contain
  forbidden characters. And even for new XCF files (with fonts names generated
  such as 'font123' so there should be no escapable characters), we should not
  trust that the XCF/parasite contents is correct. It can be wrong for various
  reasons.
- Search for ' font="%s"', otherwise the search-and-replace might catch other
  XML attributes. For instance we don't want the font "ultrabold" to match
  weight="ultrabold".
- The backward compatibility code didn't have code to stop 2 font name
  replacements to chain up, i.e. if a real world font was named "gimpfont123"
  and another "gimpfont321" and if our replacement code were to change
  "gimpfont123" to "gimpfont321" then "gimpfont321" to something else. In the
  end, we'd have only a single font. I am fixing it by replacing " font=" to
  " gimpfont=" then only correcting the attribute name at the end. This
  intermediate attribute name acts as a "done" flag.
This commit is contained in:
Jehan 2023-09-11 21:31:33 +02:00
parent ed4c50ce2e
commit e832b73e55
2 changed files with 58 additions and 47 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
app/text/gimptext-parasite.c
View File

@ -137,7 +137,7 @@ gimp_text_from_parasite (const GimpParasite *parasite,
{
desc = pango_font_description_to_string (attr_font_desc->desc);
if (g_slist_find_custom (fonts, (gconstpointer) desc, g_str_equal) == NULL)
if (g_slist_find_custom (fonts, (gconstpointer) desc, (GCompareFunc) g_strcmp0) == NULL)
{
fonts = g_slist_prepend (fonts, (gpointer) desc);
/*duplicate font name to making parsing easier when deserializing*/

103
app/text/gimptext.c
View File

@ -830,7 +830,7 @@ gimp_text_serialize_property (GimpConfig *config,
gchar *altered_font_name = pango_font_description_to_string (attr_font_desc->desc);
gchar *font_name = g_strdup_printf ("gimp%s", altered_font_name);
if (g_slist_find_custom (fonts, (gconstpointer) font_name, g_str_equal) == NULL)
if (g_slist_find_custom (fonts, (gconstpointer) font_name, (GCompareFunc) g_strcmp0) == NULL)
{
fonts = g_slist_prepend (fonts, (gpointer) font_name);
@ -933,60 +933,71 @@ gimp_text_deserialize_property (GimpConfig *object,
/* This is for backward compatibility with older xcf files.*/
if (g_scanner_peek_next_token (scanner) == G_TOKEN_STRING)
while (g_scanner_peek_next_token (scanner) == G_TOKEN_STRING)
{
gchar *markup_fontname;
gchar *escaped_markup_fontname;
gchar *actual_font_lookupname;
GimpFont *font;
{
while (g_scanner_peek_next_token (scanner) == G_TOKEN_STRING)
{
gchar *markup_fontname;
gchar *replaced_markup;
gchar *new_markup;
GimpFont *font;
gimp_scanner_parse_string (scanner, &markup_fontname);
gimp_scanner_parse_string (scanner, &markup_fontname);
font = GIMP_FONT (GIMP_CONFIG_GET_IFACE (dummy_object)->deserialize_create (GIMP_TYPE_FONT,
scanner,
-1,
NULL));
escaped_markup_fontname = g_strdup_printf ("\"%s\"", markup_fontname);
actual_font_lookupname = g_strdup_printf ("\"%s\"", gimp_font_get_lookup_name (font));
g_string_replace (markup_str, escaped_markup_fontname, actual_font_lookupname, 0);
g_free (markup_fontname);
g_free (escaped_markup_fontname);
g_free (actual_font_lookupname);
g_object_unref (font);
}
font = GIMP_FONT (GIMP_CONFIG_GET_IFACE (dummy_object)->deserialize_create (GIMP_TYPE_FONT,
scanner,
-1,
NULL));
replaced_markup = g_markup_printf_escaped (" font=\"%s\"", markup_fontname);
new_markup = g_strdup_printf (" gimpfont=\"%s\"", gimp_font_get_lookup_name (font));
g_string_replace (markup_str, replaced_markup, new_markup, 0);
g_free (markup_fontname);
g_free (replaced_markup);
g_free (new_markup);
g_object_unref (font);
}
/* We avoid the edge case when actual fonts are called "gimpfont%d"
* and their replacement name chains to each other by marking already
* processed font as "gimpfont=". Then we clean up this fake attribute
* name in the end.
* This is not a problem with the new format as font are stored as
* "font%d" (see comment in gimp_text_serialize_property()).
*/
g_string_replace (markup_str, " gimpfont=\"", " font=\"", 0);
}
else
while (g_scanner_peek_next_token (scanner) == G_TOKEN_LEFT_PAREN)
{
gchar *lookupname;
gchar *escaped_lookupname;
gchar *actual_font_lookupname;
GimpFont *font;
{
while (g_scanner_peek_next_token (scanner) == G_TOKEN_LEFT_PAREN)
{
gchar *lookupname;
gchar *replaced_markup;
gchar *new_markup;
GimpFont *font;
g_scanner_get_next_token (scanner); /* ( */
g_scanner_get_next_token (scanner); /* "lookupname" */
gimp_scanner_parse_string (scanner, &lookupname);
g_scanner_get_next_token (scanner); /* ( */
g_scanner_get_next_token (scanner); /* "lookupname" */
gimp_scanner_parse_string (scanner, &lookupname);
g_scanner_get_next_token (scanner); /* ) */
g_scanner_get_next_token (scanner); /* font */
g_scanner_get_next_token (scanner); /* ) */
g_scanner_get_next_token (scanner); /* font */
font = GIMP_FONT (GIMP_CONFIG_GET_IFACE (dummy_object)->deserialize_create (GIMP_TYPE_FONT,
scanner,
-1,
NULL));
g_scanner_get_next_token (scanner); /* ) */
g_scanner_get_next_token (scanner); /* ) */
font = GIMP_FONT (GIMP_CONFIG_GET_IFACE (dummy_object)->deserialize_create (GIMP_TYPE_FONT,
scanner,
-1,
NULL));
g_scanner_get_next_token (scanner); /* ) */
g_scanner_get_next_token (scanner); /* ) */
escaped_lookupname = g_strdup_printf ("\"%s\"", lookupname);
actual_font_lookupname = g_strdup_printf ("\"%s\"", gimp_font_get_lookup_name (font));
g_string_replace (markup_str, escaped_lookupname, actual_font_lookupname, 0);
replaced_markup = g_markup_printf_escaped (" font=\"%s\"", lookupname);
new_markup = g_strdup_printf (" font=\"%s\"", gimp_font_get_lookup_name (font));
g_string_replace (markup_str, replaced_markup, new_markup, 0);
g_free (lookupname);
g_free (escaped_lookupname);
g_free (actual_font_lookupname);
g_object_unref (font);
}
g_free (lookupname);
g_free (replaced_markup);
g_free (new_markup);
g_object_unref (font);
}
}
g_value_set_string (value, markup_str->str);