Add mirroring for visual UTF-8

grub4android · Mar 16, 2010 · 6f5568e · 6f5568e
1 parent 703cbe6
commit 6f5568e
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Showing 4 changed files with 45 additions and 4 deletions.
diff --git a/autogen.sh b/autogen.sh
@@ -13,7 +13,7 @@ echo timestamp > stamp-h.in
 
 python util/import_gcry.py lib/libgcrypt/ .
 
-python util/import_unicode.py util/UnicodeData.txt unidata.c
+python util/import_unicode.py util/UnicodeData.txt util/BidiMirroring.txt unidata.c
 
 for rmk in conf/*.rmk ${GRUB_CONTRIB}/*/conf/*.rmk; do
   if test -e $rmk ; then

diff --git a/include/grub/unicode.h b/include/grub/unicode.h
@@ -23,6 +23,12 @@
 #include <grub/mm.h>
 #include <grub/misc.h>
 
+struct grub_unicode_bidi_pair
+{
+  grub_uint32_t key;
+  grub_uint32_t replace;
+};
+
 struct grub_unicode_compact_range
 {
   grub_uint32_t start:21;
@@ -97,6 +103,7 @@ struct grub_unicode_glyph
 #define GRUB_UNICODE_VARIATION_SELECTOR_256 0xe01ef
 
 extern struct grub_unicode_compact_range grub_unicode_compact[];
+extern struct grub_unicode_bidi_pair grub_unicode_bidi_pairs[];
 
 #define GRUB_UNICODE_MAX_CACHED_CHAR 0x20000
 /*  Unicode mandates an arbitrary limit.  */

diff --git a/normal/charset.c b/normal/charset.c
@@ -1087,6 +1087,16 @@ map_code (grub_uint32_t in, struct grub_term_output *term)
   return in;
 }
 
+static grub_uint32_t
+mirror_code (grub_uint32_t in)
+{
+  int i;
+  for (i = 0; grub_unicode_bidi_pairs[i].key; i++)
+    if (grub_unicode_bidi_pairs[i].key == in)
+      return grub_unicode_bidi_pairs[i].replace;
+  return in;
+}
+
 static void
 putglyph (const struct grub_unicode_glyph *c, struct grub_term_output *term)
 {
@@ -1124,7 +1134,11 @@ putglyph (const struct grub_unicode_glyph *c, struct grub_term_output *term)
 	  grub_uint32_t code;
 
 	  if (i == -1)
-	    code = c->base;
+	    {
+	      code = c->base;
+	      if (c->attributes & GRUB_UNICODE_GLYPH_ATTRIBUTE_MIRROR)
+		code = mirror_code (code);
+	    }
 	  else
 	    code = c->combining[i].code;
 

diff --git a/util/import_unicode.py b/util/import_unicode.py
@@ -25,7 +25,7 @@
     print ("Usage: %s SOURCE DESTINATION" % sys.argv[0])
     exit (0)
 infile = open (sys.argv[1], "r")
-outfile = open (sys.argv[2], "w")
+outfile = open (sys.argv[3], "w")
 outfile.write ("#include <grub/unicode.h>\n")
 outfile.write ("\n")
 outfile.write ("struct grub_unicode_compact_range grub_unicode_compact[] = {\n")
@@ -69,4 +69,24 @@
                                lastmirrortype)))
 outfile.write ("{0, 0, 0, 0, 0},\n")
 
-outfile.write ("};")
+outfile.write ("};\n")
+
+infile.close ()
+
+infile = open (sys.argv[2], "r")
+
+outfile.write ("struct grub_unicode_bidi_pair grub_unicode_bidi_pairs[] = {\n")
+
+for line in infile:
+    line = re.sub ("#.*$", "", line)
+    line = line.replace ("\n", "")
+    line = line.replace (" ", "")
+    if len (line) == 0 or line[0] == '\n':
+        continue
+    sp = line.split (";")
+    code1 = int (sp[0], 16)
+    code2 = int (sp[1], 16)
+    outfile.write ("{0x%x, 0x%x},\n" % (code1, code2))
+outfile.write ("{0, 0},\n")
+outfile.write ("};\n")
+