git.m6w6.name Git - awesomized/libmemcached/blob - libmemcached/string.h

   1 /*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
   2  *
   3  *  Libmemcached library
   4  *
   5  *  Copyright (C) 2011 Data Differential, http://datadifferential.com/
   6  *  Copyright (C) 2006-2009 Brian Aker All rights reserved.
   7  *
   8  *  Redistribution and use in source and binary forms, with or without
   9  *  modification, are permitted provided that the following conditions are
  10  *  met:
  11  *
  12  *      * Redistributions of source code must retain the above copyright
  13  *  notice, this list of conditions and the following disclaimer.
  14  *
  15  *      * Redistributions in binary form must reproduce the above
  16  *  copyright notice, this list of conditions and the following disclaimer
  17  *  in the documentation and/or other materials provided with the
  18  *  distribution.
  19  *
  20  *      * The names of its contributors may not be used to endorse or
  21  *  promote products derived from this software without specific prior
  22  *  written permission.
  23  *
  24  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  25  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  26  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  27  *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  28  *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  29  *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  30  *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  31  *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  32  *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  33  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  34  *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  35  *
  36  */
  37
  38 #pragma once
  39
  40 /**
  41   Strings are always under our control so we make some assumptions
  42   about them.
  43
  44   1) is_initialized is always valid.
  45   2) A string once intialized will always be, until free where we
  46      unset this flag.
  47   3) A string always has a root.
  48 */
  49
  50 struct memcached_string_st {
  51   char *end;
  52   char *string;
  53   size_t current_size;
  54   memcached_st *root;
  55   struct {
  56     bool is_allocated:1;
  57     bool is_initialized:1;
  58   } options;
  59 };
  60
  61 struct memcached_string_t {
  62   size_t size;
  63   const char *c_str;
  64 };
  65
  66 #define memcached_size(X) (X).size;
  67 #define memcached_c_str(X) (X).c_str;
  68 #define memcached_string_param(X) (X).c_str, (X).size
  69
  70 #ifdef BUILDING_LIBMEMCACHED
  71
  72 #ifdef __cplusplus
  73 extern "C" {
  74 #endif
  75
  76 LIBMEMCACHED_LOCAL
  77 memcached_string_st *memcached_string_create(const memcached_st *ptr,
  78                                              memcached_string_st *string,
  79                                              size_t initial_size);
  80 LIBMEMCACHED_LOCAL
  81 memcached_return_t memcached_string_check(memcached_string_st *string, size_t need);
  82
  83 LIBMEMCACHED_LOCAL
  84 char *memcached_string_c_copy(memcached_string_st *string);
  85
  86 LIBMEMCACHED_LOCAL
  87 memcached_return_t memcached_string_append_character(memcached_string_st *string,
  88                                                      char character);
  89 LIBMEMCACHED_LOCAL
  90 memcached_return_t memcached_string_append(memcached_string_st *string,
  91                                            const char *value, size_t length);
  92 LIBMEMCACHED_LOCAL
  93 memcached_return_t memcached_string_reset(memcached_string_st *string);
  94
  95 LIBMEMCACHED_LOCAL
  96 void memcached_string_free(memcached_string_st *string);
  97
  98 LIBMEMCACHED_LOCAL
  99 size_t memcached_string_length(const memcached_string_st *self);
 100
 101 LIBMEMCACHED_LOCAL
 102 size_t memcached_string_size(const memcached_string_st *self);
 103
 104 LIBMEMCACHED_LOCAL
 105 const char *memcached_string_value(const memcached_string_st *self);
 106
 107 LIBMEMCACHED_LOCAL
 108 char *memcached_string_value_mutable(const memcached_string_st *self);
 109
 110 LIBMEMCACHED_LOCAL
 111 void memcached_string_set_length(memcached_string_st *self, size_t length);
 112
 113 #ifdef __cplusplus
 114 }
 115 #endif
 116
 117 #ifdef __cplusplus
 118 #define memcached_string_with_size(X) (X), (static_cast<size_t>((sizeof(X) - 1)))
 119 #define memcached_string_make(X) (static_cast<size_t>((sizeof(X) - 1))), (X)
 120 #else
 121 #define memcached_string_with_size(X) (X), ((size_t)((sizeof(X) - 1)))
 122 #define memcached_string_make(X) (((size_t)((sizeof(X) - 1))), (X)
 123 #endif
 124
 125 #define memcached_string_make_from_cstr(X) (X), ((X) ? strlen(X) : 0)
 126
 127 #endif