2 * Copyright © 2012,2013 Google, Inc.
4 * This is part of HarfBuzz, a text shaping library.
6 * Permission is hereby granted, without written agreement and without
7 * license or royalty fees, to use, copy, modify, and distribute this
8 * software and its documentation for any purpose, provided that the
9 * above copyright notice and the following two paragraphs appear in
10 * all copies of this software.
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
24 * Google Author(s): Behdad Esfahbod
27 #include "hb-buffer-private.hh"
30 static const char *serialize_formats[] = {
37 * hb_buffer_serialize_list_formats:
41 * Return value: (transfer none):
46 hb_buffer_serialize_list_formats (void)
48 return serialize_formats;
52 * hb_buffer_serialize_format_from_string:
62 hb_buffer_serialize_format_t
63 hb_buffer_serialize_format_from_string (const char *str, int len)
66 return (hb_buffer_serialize_format_t) (hb_tag_from_string (str, len) & ~0x20202020u);
70 * hb_buffer_serialize_format_to_string:
80 hb_buffer_serialize_format_to_string (hb_buffer_serialize_format_t format)
84 case HB_BUFFER_SERIALIZE_FORMAT_TEXT: return serialize_formats[0];
85 case HB_BUFFER_SERIALIZE_FORMAT_JSON: return serialize_formats[1];
87 case HB_BUFFER_SERIALIZE_FORMAT_INVALID: return NULL;
92 _hb_buffer_serialize_glyphs_json (hb_buffer_t *buffer,
96 unsigned int buf_size,
97 unsigned int *buf_consumed,
99 hb_buffer_serialize_flags_t flags)
101 hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, NULL);
102 hb_glyph_position_t *pos = hb_buffer_get_glyph_positions (buffer, NULL);
105 for (unsigned int i = start; i < end; i++)
110 /* In the following code, we know b is large enough that no overflow can happen. */
112 #define APPEND(s) HB_STMT_START { strcpy (p, s); p += strlen (s); } HB_STMT_END
120 if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES))
123 hb_font_glyph_to_string (font, info[i].codepoint, g, sizeof (g));
125 for (char *q = g; *q; q++) {
133 p += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "%u", info[i].codepoint));
135 if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS)) {
136 p += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"cl\":%u", info[i].cluster));
139 if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS))
141 p += snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"dx\":%d,\"dy\":%d",
142 pos[i].x_offset, pos[i].y_offset);
143 p += snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"ax\":%d,\"ay\":%d",
144 pos[i].x_advance, pos[i].y_advance);
149 unsigned int l = p - b;
165 _hb_buffer_serialize_glyphs_text (hb_buffer_t *buffer,
169 unsigned int buf_size,
170 unsigned int *buf_consumed,
172 hb_buffer_serialize_flags_t flags)
174 hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, NULL);
175 hb_glyph_position_t *pos = hb_buffer_get_glyph_positions (buffer, NULL);
178 for (unsigned int i = start; i < end; i++)
183 /* In the following code, we know b is large enough that no overflow can happen. */
188 if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES))
190 hb_font_glyph_to_string (font, info[i].codepoint, p, 128);
194 p += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "%u", info[i].codepoint));
196 if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS)) {
197 p += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "=%u", info[i].cluster));
200 if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS))
202 if (pos[i].x_offset || pos[i].y_offset)
203 p += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "@%d,%d", pos[i].x_offset, pos[i].y_offset));
206 p += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "%d", pos[i].x_advance));
207 if (pos[i].y_advance)
208 p += MAX (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",%d", pos[i].y_advance));
211 unsigned int l = p - b;
226 /* Returns number of items, starting at start, that were serialized. */
228 * hb_buffer_serialize_glyphs:
232 * @buf: (array length=buf_size):
234 * @buf_consumed: (out):
246 hb_buffer_serialize_glyphs (hb_buffer_t *buffer,
250 unsigned int buf_size,
251 unsigned int *buf_consumed, /* May be NULL */
252 hb_font_t *font, /* May be NULL */
253 hb_buffer_serialize_format_t format,
254 hb_buffer_serialize_flags_t flags)
256 assert (start <= end && end <= buffer->len);
258 unsigned int sconsumed;
260 buf_consumed = &sconsumed;
263 assert ((!buffer->len && buffer->content_type == HB_BUFFER_CONTENT_TYPE_INVALID) ||
264 buffer->content_type == HB_BUFFER_CONTENT_TYPE_GLYPHS);
266 if (unlikely (start == end))
270 font = hb_font_get_empty ();
274 case HB_BUFFER_SERIALIZE_FORMAT_TEXT:
275 return _hb_buffer_serialize_glyphs_text (buffer, start, end,
276 buf, buf_size, buf_consumed,
279 case HB_BUFFER_SERIALIZE_FORMAT_JSON:
280 return _hb_buffer_serialize_glyphs_json (buffer, start, end,
281 buf, buf_size, buf_consumed,
285 case HB_BUFFER_SERIALIZE_FORMAT_INVALID:
293 parse_uint (const char *pp, const char *end, uint32_t *pv)
296 unsigned int len = MIN (ARRAY_LENGTH (buf) - 1, (unsigned int) (end - pp));
297 strncpy (buf, pp, len);
305 v = strtol (p, &pend, 10);
306 if (errno || p == pend || pend - p != end - pp)
314 parse_int (const char *pp, const char *end, int32_t *pv)
317 unsigned int len = MIN (ARRAY_LENGTH (buf) - 1, (unsigned int) (end - pp));
318 strncpy (buf, pp, len);
326 v = strtol (p, &pend, 10);
327 if (errno || p == pend || pend - p != end - pp)
334 #include "hb-buffer-deserialize-json.hh"
335 #include "hb-buffer-deserialize-text.hh"
338 * hb_buffer_deserialize_glyphs:
340 * @buf: (array length=buf_len):
353 hb_buffer_deserialize_glyphs (hb_buffer_t *buffer,
355 int buf_len, /* -1 means nul-terminated */
356 const char **end_ptr, /* May be NULL */
357 hb_font_t *font, /* May be NULL */
358 hb_buffer_serialize_format_t format)
365 assert ((!buffer->len && buffer->content_type == HB_BUFFER_CONTENT_TYPE_INVALID) ||
366 buffer->content_type == HB_BUFFER_CONTENT_TYPE_GLYPHS);
369 buf_len = strlen (buf);
377 hb_buffer_set_content_type (buffer, HB_BUFFER_CONTENT_TYPE_GLYPHS);
380 font = hb_font_get_empty ();
384 case HB_BUFFER_SERIALIZE_FORMAT_TEXT:
385 return _hb_buffer_deserialize_glyphs_text (buffer,
386 buf, buf_len, end_ptr,
389 case HB_BUFFER_SERIALIZE_FORMAT_JSON:
390 return _hb_buffer_deserialize_glyphs_json (buffer,
391 buf, buf_len, end_ptr,
395 case HB_BUFFER_SERIALIZE_FORMAT_INVALID: