static hb_blob_t *
_hb_rename_font (hb_blob_t *blob, wchar_t *new_name)
{
+ /* Create a copy of the font data, with the 'name' table replaced by a
+ * table that names the font with our private F_* name created above.
+ * For simplicity, we just append a new 'name' table and update the
+ * sfnt directory; the original table is left in place, but unused.
+ *
+ * The new table will contain just 5 name IDs: family, style, unique,
+ * full, PS. All of them point to the same name data with our unique name.
+ */
+
unsigned int length, new_length, name_str_len;
const char *orig_sfnt_data = hb_blob_get_data (blob, &length);
_hb_generate_unique_face_name (new_name, &name_str_len);
- /* Create a copy of the font data, with the 'name' table replaced by a table
- * that names the font with our private F_* name created above.
- * For simplicity, we just append a new 'name' table and update the sfnt directory;
- * the original table is left in place, but unused. */
-
- /* The new table will contain just 5 name IDs: family, style, unique, full, PS.
- * All of them point to the same name data with our unique F_* name. */
-
static const uint16_t name_IDs[] = { 1, 2, 3, 4, 6 };
- const unsigned int name_header_size = 3 * 2; /* NameTableHeader: USHORT x 3 */
- const unsigned int name_record_size = 6 * 2; /* NameRecord: USHORT x 6 */
- const unsigned int name_count = sizeof (name_IDs) / sizeof (name_IDs[0]);
- unsigned int name_table_length = name_header_size +
- name_count * name_record_size +
+ unsigned int name_table_length = OT::name::min_size +
+ ARRAY_LENGTH (name_IDs) * OT::NameRecord::static_size +
name_str_len * 2; /* for name data in UTF16BE form */
-
unsigned int name_table_offset = (length + 3) & ~3;
- new_length = name_table_offset + (name_table_length + 3) & ~3;
- char *new_sfnt_data = (char *) calloc (1, new_length);
+ new_length = name_table_offset + ((name_table_length + 3) & ~3);
+ void *new_sfnt_data = calloc (1, new_length);
if (!new_sfnt_data)
+ {
+ hb_blob_destroy (blob);
return NULL;
+ }
memcpy(new_sfnt_data, orig_sfnt_data, length);
- unsigned char *name_table_data = (unsigned char *) (new_sfnt_data + name_table_offset);
-
- unsigned char *p = name_table_data;
- *p++ = 0x00; *p++ = 0x00; /* format = 0 */
- *p++ = 0x00; *p++ = name_count; /* number of name records */
- *p++ = 0x00; *p++ = name_header_size + name_count * name_record_size; /* offset to string data */
-
- for (unsigned int i = 0; i < name_count; i++) {
- *p++ = 0x00; *p++ = 0x03; /* platformID */
- *p++ = 0x00; *p++ = 0x01; /* encodingID */
- *p++ = 0x04; *p++ = 0x09; /* languageID = 0x0409 */
- *p++ = 0x00; *p++ = name_IDs[i]; /* nameID */
- *p++ = 0x00; *p++ = name_str_len * 2; /* string length (bytes) */
- *p++ = 0x00; *p++ = 0x00; /* string offset */
+ OT::name &name = OT::StructAtOffset<OT::name> (new_sfnt_data, name_table_offset);
+ name.format.set (0);
+ name.count.set (ARRAY_LENGTH (name_IDs));
+ name.stringOffset.set (name.get_size ());
+ for (unsigned int i = 0; i < ARRAY_LENGTH (name_IDs); i++)
+ {
+ OT::NameRecord &record = name.nameRecord[i];
+ record.platformID.set (3);
+ record.encodingID.set (1);
+ record.languageID.set (0x0409); /* English */
+ record.nameID.set (name_IDs[i]);
+ record.length.set (name_str_len * 2);
+ record.offset.set (0);
}
- for (unsigned int i = 0; i < name_str_len; i++) {
- /* copy string data from face_name, converting wchar_t to UTF16BE */
+ /* Copy string data from new_name, converting wchar_t to UTF16BE. */
+ unsigned char *p = &OT::StructAfter<unsigned char> (name);
+ for (unsigned int i = 0; i < name_str_len; i++)
+ {
*p++ = new_name[i] >> 8;
*p++ = new_name[i] & 0xff;
}
- /* calculate new name table checksum */
- uint32_t checksum = 0;
- while (name_table_data < p) {
- checksum += (name_table_data[0] << 24) +
- (name_table_data[1] << 16) +
- (name_table_data[2] << 8) +
- name_table_data[3];
- name_table_data += 4;
- }
-
- /* adjust name table entry to point to new name table */
+ /* Adjust name table entry to point to new name table */
OT::OpenTypeFontFace *face = (OT::OpenTypeFontFace *) (new_sfnt_data);
unsigned int index;
if (face->find_table_index (HB_OT_TAG_name, &index))
{
- const OT::TableRecord& record = face->get_table (index);
- OT::TableRecord *rp = const_cast<OT::TableRecord *> (&record);
- rp->checkSum.set(checksum);
- rp->offset.set(name_table_offset);
- rp->length.set(name_table_length);
+ OT::TableRecord &record = const_cast<OT::TableRecord &> (face->get_table (index));
+ record.checkSum.set_for_data (&name, name_table_length);
+ record.offset.set (name_table_offset);
+ record.length.set (name_table_length);
+ }
+ else
+ {
+ free (new_sfnt_data);
+ hb_blob_destroy (blob);
+ return NULL;
}
/* The checkSumAdjustment field in the 'head' table is now wrong,
- but AFAIK that doesn't actually cause any problems so I haven't
- bothered to fix it. */
+ * but that doesn't actually seem to cause any problems so we don't
+ * bother. */
hb_blob_destroy (blob);
- return hb_blob_create (new_sfnt_data, new_length, HB_MEMORY_MODE_WRITABLE, NULL, free);
+ return hb_blob_create ((const char *) new_sfnt_data, new_length,
+ HB_MEMORY_MODE_WRITABLE, NULL, free);
}
hb_uniscribe_shaper_face_data_t *
DEBUG_MSG (UNISCRIBE, face, "Face has empty blob");
blob = _hb_rename_font (blob, data->face_name);
+ if (unlikely (!blob))
+ {
+ free (data);
+ return NULL;
+ }
DWORD num_fonts_installed;
data->fh = AddFontMemResourceEx ((void *) hb_blob_get_data (blob, NULL),
hb_blob_get_length (blob),
0, &num_fonts_installed);
- if (unlikely (!data->fh)) {
+ if (unlikely (!data->fh))
+ {
DEBUG_MSG (UNISCRIBE, face, "Face AddFontMemResourceEx() failed");
free (data);
return NULL;
projects / platform / upstream / libHarfBuzzSharp.git / commitdiff