1 /*
2 * Copyright © 2023 Behdad Esfahbod
3 *
4 * This is part of HarfBuzz, a text shaping library.
5 *
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.
11 *
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
16 * DAMAGE.
17 *
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.
23 */
24
25 #ifndef HB_WASM_API_SHAPE_HH
26 #define HB_WASM_API_SHAPE_HH
27
28 #include "hb-wasm-api.hh"
29
30 namespace hb {
31 namespace wasm {
32
33
34 static_assert (sizeof (feature_t) == sizeof (hb_feature_t), "");
35
HB_WASM_INTERFACE(bool_t,shape_with)36 HB_WASM_INTERFACE (bool_t, shape_with) (HB_WASM_EXEC_ENV
37 ptr_d(font_t, font),
38 ptr_d(buffer_t, buffer),
39 ptr_d(const feature_t, features),
40 uint32_t num_features,
41 const char *shaper)
42 {
43 if (unlikely (0 == strcmp (shaper, "wasm")))
44 return false;
45
46 HB_REF2OBJ (font);
47 HB_REF2OBJ (buffer);
48
49 /* Pre-conditions that make hb_shape_full() crash should be checked here. */
50
51 if (unlikely (!buffer->ensure_unicode ()))
52 return false;
53
54 if (unlikely (!HB_DIRECTION_IS_VALID (buffer->props.direction)))
55 return false;
56
57 HB_ARRAY_PARAM (const feature_t, features, num_features);
58 if (unlikely (!features && num_features))
59 return false;
60
61 const char * shaper_list[] = {shaper, nullptr};
62 return hb_shape_full (font, buffer,
63 (hb_feature_t *) features, num_features,
64 shaper_list);
65 }
66
67
68 }}
69
70 #endif /* HB_WASM_API_SHAPE_HH */
71