lib/ldb/common/ldb_options.c

   1 /*
   2    ldb database library
   3
   4    Copyright (C) Andrew Tridgell  2010
   5
   6      ** NOTE! The following LGPL license applies to the ldb
   7      ** library. This does NOT imply that all of Samba is released
   8      ** under the LGPL
   9
  10    This library is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU Lesser General Public
  12    License as published by the Free Software Foundation; either
  13    version 3 of the License, or (at your option) any later version.
  14
  15    This library is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    Lesser General Public License for more details.
  19
  20    You should have received a copy of the GNU Lesser General Public
  21    License along with this library; if not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24 /*
  25  *  Name: ldb
  26  *
  27  *  Component: ldb options[] handling
  28  *
  29  *  Author: Andrew Tridgell
  30  */
  31
  32 #include "ldb_private.h"
  33
  34 /*
  35   find an option within an options array
  36
  37   accepts the following forms:
  38
  39      NAME
  40      NAME:value
  41      NAME=value
  42
  43   returns a pointer into an element of the options[] array, or NULL is
  44   not found.
  45
  46   For the NAME form, returns a pointer to an empty string (thus
  47   allowing for boolean options).
  48  */
  49 const char *ldb_options_find(struct ldb_context *ldb, const char *options[],
  50                                        const char *option_name)
  51 {
  52         size_t len = strlen(option_name);
  53         int i;
  54
  55         if (options == NULL) {
  56                 return NULL;
  57         }
  58
  59         for (i=0; options[i]; i++) {
  60                 if (strncmp(option_name, options[i], len) != 0) {
  61                         continue;
  62                 }
  63                 if (options[i][len] == ':' || options[i][len] == '=') {
  64                         return &options[i][len+1];
  65                 }
  66                 if (options[i][len] == 0) {
  67                         return &options[i][len];
  68                 }
  69         }
  70
  71         return NULL;
  72 }