| /* |
| * Copyright © 2009 Red Hat, Inc. |
| * Copyright © 2018 Google, Inc. |
| * |
| * This is part of HarfBuzz, a text shaping 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 |
| * Google Author(s): Behdad Esfahbod |
| */ |
| |
| #ifndef HB_BLOB_HH |
| #define HB_BLOB_HH |
| |
| #include "hb.hh" |
| |
| |
| /* |
| * hb_blob_t |
| */ |
| |
| struct hb_blob_t |
| { |
| void fini_shallow () { destroy_user_data (); } |
| |
| void destroy_user_data () |
| { |
| if (destroy) |
| { |
| destroy (user_data); |
| user_data = nullptr; |
| destroy = nullptr; |
| } |
| } |
| |
| HB_INTERNAL bool try_make_writable (); |
| HB_INTERNAL bool try_make_writable_inplace (); |
| HB_INTERNAL bool try_make_writable_inplace_unix (); |
| |
| hb_bytes_t as_bytes () const { return hb_bytes_t (data, length); } |
| template <typename Type> |
| const Type* as () const { return as_bytes ().as<Type> (); } |
| |
| public: |
| hb_object_header_t header; |
| |
| const char *data; |
| unsigned int length; |
| hb_memory_mode_t mode; |
| |
| void *user_data; |
| hb_destroy_func_t destroy; |
| }; |
| |
| |
| /* |
| * hb_blob_ptr_t |
| */ |
| |
| template <typename P> |
| struct hb_blob_ptr_t |
| { |
| typedef hb_remove_pointer<P> T; |
| |
| hb_blob_ptr_t (hb_blob_t *b_ = nullptr) : b (b_) {} |
| hb_blob_t * operator = (hb_blob_t *b_) { return b = b_; } |
| const T * operator -> () const { return get (); } |
| const T & operator * () const { return *get (); } |
| template <typename C> operator const C * () const { return get (); } |
| operator const char * () const { return (const char *) get (); } |
| const T * get () const { return b->as<T> (); } |
| hb_blob_t * get_blob () const { return b.get_raw (); } |
| unsigned int get_length () const { return b.get ()->length; } |
| void destroy () { hb_blob_destroy (b.get_raw ()); b = nullptr; } |
| |
| private: |
| hb_nonnull_ptr_t<hb_blob_t> b; |
| }; |
| |
| |
| #endif /* HB_BLOB_HH */ |