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1 /* | 1 /* |
2 * Copyright © 2009 Red Hat, Inc. | 2 * Copyright © 2009 Red Hat, Inc. |
3 * | 3 * |
4 * This is part of HarfBuzz, a text shaping library. | 4 * This is part of HarfBuzz, a text shaping library. |
5 * | 5 * |
6 * Permission is hereby granted, without written agreement and without | 6 * Permission is hereby granted, without written agreement and without |
7 * license or royalty fees, to use, copy, modify, and distribute this | 7 * license or royalty fees, to use, copy, modify, and distribute this |
8 * software and its documentation for any purpose, provided that the | 8 * software and its documentation for any purpose, provided that the |
9 * above copyright notice and the following two paragraphs appear in | 9 * above copyright notice and the following two paragraphs appear in |
10 * all copies of this software. | 10 * all copies of this software. |
11 * | 11 * |
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR | 12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES | 13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN | 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 | 15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
16 * DAMAGE. | 16 * DAMAGE. |
17 * | 17 * |
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, | 18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND | 19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS | 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 | 21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. | 22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
23 * | 23 * |
24 * Red Hat Author(s): Behdad Esfahbod | 24 * Red Hat Author(s): Behdad Esfahbod |
25 */ | 25 */ |
26 | 26 |
| 27 /* http://www.oracle.com/technetwork/articles/servers-storage-dev/standardheader
files-453865.html */ |
| 28 #define _POSIX_C_SOURCE 199309L |
| 29 |
27 #include "hb-private.hh" | 30 #include "hb-private.hh" |
28 | 31 |
29 #include "hb-blob.h" | 32 #include "hb-blob.h" |
30 #include "hb-object-private.hh" | 33 #include "hb-object-private.hh" |
31 | 34 |
32 #ifdef HAVE_SYS_MMAN_H | 35 #ifdef HAVE_SYS_MMAN_H |
33 #ifdef HAVE_UNISTD_H | 36 #ifdef HAVE_UNISTD_H |
34 #include <unistd.h> | 37 #include <unistd.h> |
35 #endif /* HAVE_UNISTD_H */ | 38 #endif /* HAVE_UNISTD_H */ |
36 #include <sys/mman.h> | 39 #include <sys/mman.h> |
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113 { | 116 { |
114 hb_blob_t *blob; | 117 hb_blob_t *blob; |
115 | 118 |
116 if (!length || offset >= parent->length) | 119 if (!length || offset >= parent->length) |
117 return hb_blob_get_empty (); | 120 return hb_blob_get_empty (); |
118 | 121 |
119 hb_blob_make_immutable (parent); | 122 hb_blob_make_immutable (parent); |
120 | 123 |
121 blob = hb_blob_create (parent->data + offset, | 124 blob = hb_blob_create (parent->data + offset, |
122 MIN (length, parent->length - offset), | 125 MIN (length, parent->length - offset), |
123 » » » parent->mode, | 126 » » » HB_MEMORY_MODE_READONLY, |
124 hb_blob_reference (parent), | 127 hb_blob_reference (parent), |
125 (hb_destroy_func_t) hb_blob_destroy); | 128 (hb_destroy_func_t) hb_blob_destroy); |
126 | 129 |
127 return blob; | 130 return blob; |
128 } | 131 } |
129 | 132 |
130 hb_blob_t * | 133 hb_blob_t * |
131 hb_blob_get_empty (void) | 134 hb_blob_get_empty (void) |
132 { | 135 { |
133 static const hb_blob_t _hb_blob_nil = { | 136 static const hb_blob_t _hb_blob_nil = { |
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316 _hb_blob_destroy_user_data (blob); | 319 _hb_blob_destroy_user_data (blob); |
317 blob->mode = HB_MEMORY_MODE_WRITABLE; | 320 blob->mode = HB_MEMORY_MODE_WRITABLE; |
318 blob->data = new_data; | 321 blob->data = new_data; |
319 blob->user_data = new_data; | 322 blob->user_data = new_data; |
320 blob->destroy = free; | 323 blob->destroy = free; |
321 | 324 |
322 return true; | 325 return true; |
323 } | 326 } |
324 | 327 |
325 | 328 |
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