git.m6w6.name Git - m6w6/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
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  36  */
  37
  38 #pragma once
  39
  40 #include <libmemcached/basic_string.h>
  41
  42 /**
  43   Strings are always under our control so we make some assumptions
  44   about them.
  45
  46   1) is_initialized is always valid.
  47   2) A string once intialized will always be, until free where we
  48      unset this flag.
  49   3) A string always has a root.
  50 */
  51
  52 struct memcached_string_st {
  53   char *end;
  54   char *string;
  55   size_t current_size;
  56   memcached_st *root;
  57   struct {
  58     bool is_allocated:1;
  59     bool is_initialized:1;
  60   } options;
  61 };
  62
  63 #ifdef BUILDING_LIBMEMCACHED
  64
  65 #ifdef __cplusplus
  66 extern "C" {
  67 #endif
  68
  69 LIBMEMCACHED_LOCAL
  70 memcached_string_st *memcached_string_create(memcached_st *ptr,
  71                                              memcached_string_st *string,
  72                                              size_t initial_size);
  73 LIBMEMCACHED_LOCAL
  74 memcached_return_t memcached_string_check(memcached_string_st *string, size_t need);
  75
  76 LIBMEMCACHED_LOCAL
  77 char *memcached_string_c_copy(memcached_string_st *string);
  78
  79 LIBMEMCACHED_LOCAL
  80 memcached_return_t memcached_string_append_character(memcached_string_st *string,
  81                                                      char character);
  82 LIBMEMCACHED_LOCAL
  83 memcached_return_t memcached_string_append(memcached_string_st *string,
  84                                            const char *value, size_t length);
  85 LIBMEMCACHED_LOCAL
  86 memcached_return_t memcached_string_reset(memcached_string_st *string);
  87
  88 LIBMEMCACHED_LOCAL
  89 void memcached_string_free(memcached_string_st *string);
  90
  91 LIBMEMCACHED_LOCAL
  92 size_t memcached_string_length(const memcached_string_st *self);
  93
  94 LIBMEMCACHED_LOCAL
  95 size_t memcached_string_size(const memcached_string_st *self);
  96
  97 LIBMEMCACHED_LOCAL
  98 const char *memcached_string_value(const memcached_string_st *self);
  99
 100 LIBMEMCACHED_LOCAL
 101 char *memcached_string_value_mutable(const memcached_string_st *self);
 102
 103 LIBMEMCACHED_LOCAL
 104 void memcached_string_set_length(memcached_string_st *self, size_t length);
 105
 106 #ifdef __cplusplus
 107 }
 108 #endif
 109
 110 #ifdef __cplusplus
 111 #define memcached_literal_param(X) (X), (static_cast<size_t>((sizeof(X) - 1)))
 112 #else
 113 #define memcached_literal_param(X) (X), ((size_t)((sizeof(X) - 1)))
 114 #endif
 115
 116 #define memcached_string_make_from_cstr(X) (X), ((X) ? strlen(X) : 0)
 117
 118 #endif