On Windows store the default aliases file in a string array. (#492517)

2007-11-02  Tor Lillqvist  <tml@novell.com>

	* pango/pango-utils.c (read_builtin_aliases, pango_load_aliases):
	On Windows store the default aliases file in a string
	array. (#492517)

	Compared to the pango.aliases file as distributed with my most
	recent Windows builds there are some changes: Add the DejaVu fonts
	as the first ones listed for the generic sans, serif and mono font
	names. Use Tahoma instead of Arial for sans, and Georgia instead
	of Times New Roman for serif (to be used if the DejaVu fonts
	aren't present). Add Arial Unicode MS (a font with quite large
	coverage that comes with MS Office and thus is often
	available). Add Sylfaen (the Armenian and Georgian font bundled
	with Windows).

	When using the MS-Windows theme the font used by GTK+ will the
	system UI one. Both fonts typically used as system fonts, Tahoma
	(on XP) and Segoe UI (on Vista), are aliased here.

	* pango/pango-utils.c (read_alias_file): Accept also a quoted
	string for the left-hand side of an aliases file line. This is to
	enable aliasing fonts with spaces in their name, like "Segoe UI"
	which is the default system font on Vista. (#492504) (With the
	above built-in default aliases lists, no actual pango.aliases file
	is longer required on Windows for non-Latin script support,
	though.)


svn path=/trunk/; revision=2489

1 files changed, 118 insertions, 1 deletions

diff --git a/pango/pango-utils.c b/pango/pango-utils.c
index 47b402b7..1d00da17 100644
--- a/pango/pango-utils.c
+++ b/pango/pango-utils.c
@@ -1239,6 +1239,120 @@ alias_free (struct PangoAlias *alias)
   g_slice_free (struct PangoAlias, alias);
 }
 
+#ifdef G_OS_WIN32
+
+static const char *builtin_aliases[] = {
+  "courier = \"courier new\"",
+  "\"segoe ui\" = \"segoe ui,arial unicode ms,browallia new,mingliu,simhei,gulimche,ms gothic,sylfaen,kartika,latha,mangal,raavi\"",
+  "tahoma = \"tahoma,arial unicode ms,browallia new,mingliu,simhei,gulimche,ms gothic,sylfaen,kartika,latha,mangal,raavi\"",
+  /* It sucks to use the same GulimChe, MS Gothic, Sylfaen, Kartika,
+   * Latha, Mangal and Raavi fonts for all three of sans, serif and
+   * mono, but it isn't like there would be much choice. For most
+   * non-Latin scripts that Windows includes any font at all for, it
+   * has ony one. One solution is to install the free DejaVu fonts
+   * that are popular on Linux. They are listed here first.
+   */
+  "sans = \"dejavu sans,tahoma,arial unicode ms,browallia new,mingliu,simhei,gulimche,ms gothic,sylfaen,kartika,latha,mangal,raavi\"",
+  "sans-serif = \"dejavu sans,tahoma,arial unicode ms,browallia new,mingliu,simhei,gulimche,ms gothic,sylfaen,kartika,latha,mangal,raavi\"",
+  "serif = \"dejavu serif,georgia,angsana new,mingliu,simsun,gulimche,ms gothic,sylfaen,kartika,latha,mangal,raavi\"",
+  "mono = \"dejavu sans mono,courier new,courier monothai,mingliu,simsun,gulimche,ms gothic,sylfaen,kartika,latha,mangal,raavi\"",
+  "monospace = \"dejavu sans mono,courier new,courier monothai,mingliu,simsun,gulimche,ms gothic,sylfaen,kartika,latha,mangal,raavi\""
+};
+
+static void
+read_builtin_aliases (void)
+{
+
+  GString *line_buffer;
+  GString *tmp_buffer1;
+  GString *tmp_buffer2;
+  const char *pos;
+  int line;
+  struct PangoAlias alias_key;
+  struct PangoAlias *alias;
+  char **new_families;
+  int n_new;
+  int i;
+
+  line_buffer = g_string_new (NULL);
+  tmp_buffer1 = g_string_new (NULL);
+  tmp_buffer2 = g_string_new (NULL);
+
+#define ASSERT(x) if (!(x)) g_error ("Assertion failed: " #x)
+
+  for (line = 0; line < G_N_ELEMENTS (builtin_aliases); line++)
+    {
+      g_string_assign (line_buffer, builtin_aliases[line]);
+      gboolean append = FALSE;
+
+      pos = line_buffer->str;
+
+      ASSERT (pango_scan_string (&pos, tmp_buffer1) &&
+	      pango_skip_space (&pos));
+
+      if (*pos == '+')
+	{
+	  append = TRUE;
+	  pos++;
+	}
+
+      ASSERT (*(pos++) == '=');
+
+      ASSERT (pango_scan_string (&pos, tmp_buffer2));
+
+      ASSERT (!pango_skip_space (&pos));
+
+      alias_key.alias = g_ascii_strdown (tmp_buffer1->str, -1);
+
+      /* Remove any existing values */
+      alias = g_hash_table_lookup (pango_aliases_ht, &alias_key);
+
+      if (!alias)
+	{
+	  alias = g_slice_new0 (struct PangoAlias);
+	  alias->alias = alias_key.alias;
+
+	  g_hash_table_insert (pango_aliases_ht,
+			       alias, alias);
+	}
+      else
+	g_free (alias_key.alias);
+
+      new_families = g_strsplit (tmp_buffer2->str, ",", -1);
+
+      n_new = 0;
+      while (new_families[n_new])
+	n_new++;
+
+      if (alias->families && append)
+	{
+	  alias->families = g_realloc (alias->families,
+				       sizeof (char *) *(n_new + alias->n_families));
+	  for (i = 0; i < n_new; i++)
+	    alias->families[alias->n_families + i] = new_families[i];
+	  g_free (new_families);
+	  alias->n_families += n_new;
+	}
+      else
+	{
+	  for (i = 0; i < alias->n_families; i++)
+	    g_free (alias->families[i]);
+	  g_free (alias->families);
+
+	  alias->families = new_families;
+	  alias->n_families = n_new;
+	}
+    }
+
+#undef ASSERT
+
+  g_string_free (line_buffer, TRUE);
+  g_string_free (tmp_buffer1, TRUE);
+  g_string_free (tmp_buffer2, TRUE);
+}
+
+#endif
+
 static void
 read_alias_file (const char *filename)
 {
@@ -1273,7 +1387,7 @@ read_alias_file (const char *filename)
       if (!pango_skip_space (&pos))
 	continue;
 
-      if (!pango_scan_word (&pos, tmp_buffer1) ||
+      if (!pango_scan_string (&pos, tmp_buffer1) ||
 	  !pango_skip_space (&pos))
 	{
 	  errstring = g_strdup ("Line is not of the form KEY=VALUE or KEY+=VALUE");
@@ -1374,6 +1488,9 @@ pango_load_aliases (void)
 					    (GDestroyNotify)alias_free,
 					    NULL);
 
+#ifdef G_OS_WIN32
+  read_builtin_aliases ();
+#endif
 
   filename = g_strconcat (pango_get_sysconf_subdirectory (),
 			  G_DIR_SEPARATOR_S "pango.aliases",