third_party/harfbuzz-ng/src/hb-blob.h

   1 /*
   2  * Copyright © 2009  Red Hat, Inc.
   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  * Red Hat Author(s): Behdad Esfahbod
  25  */
  26
  27 #ifndef HB_H_IN
  28 #error "Include <hb.h> instead."
  29 #endif
  30
  31 #ifndef HB_BLOB_H
  32 #define HB_BLOB_H
  33
  34 #include "hb-common.h"
  35
  36 HB_BEGIN_DECLS
  37
  38
  39 typedef enum {
  40   HB_MEMORY_MODE_DUPLICATE,
  41   HB_MEMORY_MODE_READONLY,
  42   HB_MEMORY_MODE_WRITABLE,
  43   HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE
  44 } hb_memory_mode_t;
  45
  46 typedef struct hb_blob_t hb_blob_t;
  47
  48 hb_blob_t *
  49 hb_blob_create (const char        *data,
  50                 unsigned int       length,
  51                 hb_memory_mode_t   mode,
  52                 void              *user_data,
  53                 hb_destroy_func_t  destroy);
  54
  55 hb_blob_t *
  56 hb_blob_create_sub_blob (hb_blob_t    *parent,
  57                          unsigned int  offset,
  58                          unsigned int  length);
  59
  60 hb_blob_t *
  61 hb_blob_get_empty (void);
  62
  63 hb_blob_t *
  64 hb_blob_reference (hb_blob_t *blob);
  65
  66 void
  67 hb_blob_destroy (hb_blob_t *blob);
  68
  69 hb_bool_t
  70 hb_blob_set_user_data (hb_blob_t          *blob,
  71                        hb_user_data_key_t *key,
  72                        void *              data,
  73                        hb_destroy_func_t   destroy,
  74                        hb_bool_t           replace);
  75
  76
  77 void *
  78 hb_blob_get_user_data (hb_blob_t          *blob,
  79                        hb_user_data_key_t *key);
  80
  81
  82 void
  83 hb_blob_make_immutable (hb_blob_t *blob);
  84
  85 hb_bool_t
  86 hb_blob_is_immutable (hb_blob_t *blob);
  87
  88
  89 unsigned int
  90 hb_blob_get_length (hb_blob_t *blob);
  91
  92 const char *
  93 hb_blob_get_data (hb_blob_t *blob, unsigned int *length);
  94
  95 char *
  96 hb_blob_get_data_writable (hb_blob_t *blob, unsigned int *length);
  97
  98
  99 HB_END_DECLS
 100
 101 #endif /* HB_BLOB_H */