git.m6w6.name Git - m6w6/libmemcached/blob - libmemcached/options.cc

   1 /*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
   2  *
   3  *  Libmemcached library
   4  *
   5  *  Copyright (C) 2011 Data Differential, http://datadifferential.com/
   6  *  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 #include "common.h"
  39
  40 #include <libmemcached/options/parser.h>
  41 #include <libmemcached/options/scanner.h>
  42
  43 int libmemcached_parse(type_st *, yyscan_t *);
  44
  45 memcached_return_t memcached_check_options(const char *option_string, size_t length, const char *error_buffer, size_t error_buffer_size)
  46 {
  47   memcached_st memc;
  48   if (! memcached_create(&memc))
  49     return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
  50
  51   memcached_return_t rc= memcached_parse_options(&memc, option_string, length);
  52   if (rc != MEMCACHED_SUCCESS && error_buffer && error_buffer_size)
  53   {
  54     strncpy(error_buffer, error_buffer_size, memcached_last_error_message(&memc));
  55   }
  56
  57   memcached_free(&memc);
  58
  59   return rc;
  60 }
  61
  62 memcached_return_t memcached_parse_options(memcached_st *self, char const *option_string, size_t length)
  63 {
  64   type_st pp;
  65
  66   memset(&pp, 0, sizeof(type_st));
  67
  68   WATCHPOINT_ASSERT(self);
  69   if (! self)
  70     return MEMCACHED_INVALID_ARGUMENTS;
  71
  72   pp.buf= option_string;
  73   pp.memc= self;
  74   pp.length= length;
  75   libmemcached_lex_init(&pp.yyscanner);
  76   libmemcached_set_extra(&pp, pp.yyscanner);
  77   bool success= libmemcached_parse(&pp, pp.yyscanner)  == 0;
  78   libmemcached_lex_destroy(pp.yyscanner);
  79
  80   if (not success)
  81     return memcached_set_error(self, MEMCACHED_PARSE_ERROR, NULL);
  82
  83   return MEMCACHED_SUCCESS;
  84 }
  85
  86 memcached_return_t memcached_parse_file_options(memcached_st *self, const char *filename)
  87 {
  88   FILE *fp= fopen(filename, "r");
  89
  90   if (! fp)
  91     return memcached_set_errno(self, errno, NULL);
  92
  93   char buffer[BUFSIZ];
  94   memcached_return_t rc= MEMCACHED_INVALID_ARGUMENTS;
  95   while (fgets(buffer, sizeof(buffer), fp))
  96   {
  97     size_t length= strlen(buffer);
  98
  99     if (length == 1 and buffer[0] == '\n')
 100       continue;
 101
 102     rc= memcached_parse_options(self, buffer, length);
 103     if (rc != MEMCACHED_SUCCESS)
 104       break;
 105   }
 106   fclose(fp);
 107
 108   return rc;
 109 }