kc3-lang/harfbuzz/src/hb-blob.h

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• Hash : 388ad037
  Author :
  Date : 2009-08-19T16:45:41
  

  [HB] Remove HB_MEMORY_MODE_READONLY_NEVER_DUPLICATE
  
  Unlike the rest of the memory-mode enum, this one didn't only
  describe the access mode of the input memory region.  Remove it.
  
  If someone wants to inhibit duplicating, they can lock the blob
  and throw away the key.
  
  Based on mailing list discussion with Carl Worth.
  

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• src/hb-blob.h

• /*
   * Copyright (C) 2009  Red Hat, Inc.
   *
   *  This is part of HarfBuzz, an OpenType Layout engine library.
   *
   * Permission is hereby granted, without written agreement and without
   * license or royalty fees, to use, copy, modify, and distribute this
   * software and its documentation for any purpose, provided that the
   * above copyright notice and the following two paragraphs appear in
   * all copies of this software.
   *
   * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
   * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
   * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
   * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
   * DAMAGE.
   *
   * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
   * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
   * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
   * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
   * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
   *
   * Red Hat Author(s): Behdad Esfahbod
   */
  
  #ifndef HB_BLOB_H
  #define HB_BLOB_H
  
  #include "hb-common.h"
  
  HB_BEGIN_DECLS
  
  typedef enum {
    HB_MEMORY_MODE_DUPLICATE,
    HB_MEMORY_MODE_READONLY,
    HB_MEMORY_MODE_WRITABLE,
    HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE
  } hb_memory_mode_t;
  
  typedef struct _hb_blob_t hb_blob_t;
  
  hb_blob_t *
  hb_blob_create (const char        *data,
  		unsigned int       length,
  		hb_memory_mode_t   mode,
  		hb_destroy_func_t  destroy,
  		void              *user_data);
  
  hb_blob_t *
  hb_blob_create_sub_blob (hb_blob_t    *parent,
  			 unsigned int  offset,
  			 unsigned int  length);
  
  hb_blob_t *
  hb_blob_create_empty (void);
  
  hb_blob_t *
  hb_blob_reference (hb_blob_t *blob);
  
  unsigned int
  hb_blob_get_reference_count (hb_blob_t *blob);
  
  void
  hb_blob_destroy (hb_blob_t *blob);
  
  unsigned int
  hb_blob_get_length (hb_blob_t *blob);
  
  const char *
  hb_blob_lock (hb_blob_t *blob);
  
  void
  hb_blob_unlock (hb_blob_t *blob);
  
  hb_bool_t
  hb_blob_is_writable (hb_blob_t *blob);
  
  hb_bool_t
  hb_blob_try_writable_inplace (hb_blob_t *blob);
  
  hb_bool_t
  hb_blob_try_writable (hb_blob_t *blob);
  
  HB_END_DECLS
  
  #endif /* HB_BLOB_H */
  

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