sys/libprop/prop_dictionary_util.c

   1 /*      $NetBSD: prop_dictionary_util.c,v 1.3 2008/04/28 20:22:53 martin Exp $  */
   2
   3 /*-
   4  * Copyright (c) 2006 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jason R. Thorpe.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*
  33  * Utility routines to make it more convenient to work with values
  34  * stored in dictionaries.
  35  *
  36  * Note: There is no special magic going on here.  We use the standard
  37  * proplib(3) APIs to do all of this work.  Any application could do
  38  * exactly what we're doing here.
  39  */
  40
  41 #include <libprop/proplib.h>
  42 #include "prop_object_impl.h"   /* only to hide kernel vs. not-kernel */
  43
  44 bool
  45 prop_dictionary_get_dict(prop_dictionary_t dict, const char *key, prop_dictionary_t *dp)
  46 {
  47         prop_object_t o;
  48         o = prop_dictionary_get(dict, key);
  49         if (o == NULL || prop_object_type(o) != PROP_TYPE_DICTIONARY)
  50                 return false;
  51         *dp = o;
  52         return true;
  53
  54 }
  55
  56 bool
  57 prop_dictionary_get_bool(prop_dictionary_t dict,
  58                          const char *key,
  59                          bool *valp)
  60 {
  61         prop_bool_t b;
  62
  63         b = prop_dictionary_get(dict, key);
  64         if (prop_object_type(b) != PROP_TYPE_BOOL)
  65                 return (false);
  66
  67         *valp = prop_bool_true(b);
  68
  69         return (true);
  70 }
  71
  72 bool
  73 prop_dictionary_set_bool(prop_dictionary_t dict,
  74                          const char *key,
  75                          bool val)
  76 {
  77         prop_bool_t b;
  78         int rv;
  79
  80         b = prop_bool_create(val);
  81         if (b == NULL)
  82                 return (false);
  83         rv = prop_dictionary_set(dict, key, b);
  84         prop_object_release(b);
  85
  86         return (rv);
  87 }
  88
  89 #define TEMPLATE(size)                                                  \
  90 bool                                                            \
  91 prop_dictionary_get_int ## size (prop_dictionary_t dict,                \
  92                                  const char *key,                       \
  93                                  int ## size ## _t *valp)               \
  94 {                                                                       \
  95         prop_number_t num;                                              \
  96                                                                         \
  97         num = prop_dictionary_get(dict, key);                           \
  98         if (prop_object_type(num) != PROP_TYPE_NUMBER)                  \
  99                 return (false);                                         \
 100                                                                         \
 101         if (prop_number_unsigned(num) &&                                \
 102             prop_number_unsigned_integer_value(num) >                   \
 103            /*CONSTCOND*/((size) ==  8 ?  INT8_MAX :                     \
 104                          (size) == 16 ? INT16_MAX :                     \
 105                          (size) == 32 ? INT32_MAX : INT64_MAX)) {       \
 106                 return (false);                                         \
 107         }                                                               \
 108                                                                         \
 109         if (prop_number_size(num) > (size))                             \
 110                 return (false);                                         \
 111                                                                         \
 112         *valp = (int ## size ## _t) prop_number_integer_value(num);     \
 113                                                                         \
 114         return (true);                                                  \
 115 }                                                                       \
 116                                                                         \
 117 bool                                                            \
 118 prop_dictionary_get_uint ## size (prop_dictionary_t dict,               \
 119                                   const char *key,                      \
 120                                   uint ## size ## _t *valp)             \
 121 {                                                                       \
 122         prop_number_t num;                                              \
 123                                                                         \
 124         num = prop_dictionary_get(dict, key);                           \
 125         if (prop_object_type(num) != PROP_TYPE_NUMBER)                  \
 126                 return (false);                                         \
 127                                                                         \
 128         if (prop_number_unsigned(num) == false &&                       \
 129             prop_number_integer_value(num) < 0) {                       \
 130                 return (false);                                         \
 131         }                                                               \
 132                                                                         \
 133         if (prop_number_size(num) > (size))                             \
 134                 return (false);                                         \
 135                                                                         \
 136         *valp = (uint ## size ## _t)                                    \
 137             prop_number_unsigned_integer_value(num);                    \
 138                                                                         \
 139         return (true);                                                  \
 140 }                                                                       \
 141                                                                         \
 142 bool                                                            \
 143 prop_dictionary_set_int ## size (prop_dictionary_t dict,                \
 144                                  const char *key,                       \
 145                                  int ## size ## _t val)                 \
 146 {                                                                       \
 147         prop_number_t num;                                              \
 148         int rv;                                                         \
 149                                                                         \
 150         num = prop_number_create_integer((int64_t) val);                \
 151         if (num == NULL)                                                \
 152                 return (false);                                         \
 153         rv = prop_dictionary_set(dict, key, num);                       \
 154         prop_object_release(num);                                       \
 155                                                                         \
 156         return (rv);                                                    \
 157 }                                                                       \
 158                                                                         \
 159 bool                                                            \
 160 prop_dictionary_set_uint ## size (prop_dictionary_t dict,               \
 161                                   const char *key,                      \
 162                                   uint ## size ## _t val)               \
 163 {                                                                       \
 164         prop_number_t num;                                              \
 165         int rv;                                                         \
 166                                                                         \
 167         num = prop_number_create_unsigned_integer((uint64_t) val);      \
 168         if (num == NULL)                                                \
 169                 return (false);                                         \
 170         rv = prop_dictionary_set(dict, key, num);                       \
 171         prop_object_release(num);                                       \
 172                                                                         \
 173         return (rv);                                                    \
 174 }
 175
 176 TEMPLATE(8)
 177 TEMPLATE(16)
 178 TEMPLATE(32)
 179 TEMPLATE(64)
 180
 181 #undef TEMPLATE
 182
 183 #define TEMPLATE(variant, qualifier)                                    \
 184 bool                                                            \
 185 prop_dictionary_get_cstring ## variant (prop_dictionary_t dict,         \
 186                                         const char *key,                \
 187                                         qualifier char **cpp)           \
 188 {                                                                       \
 189         prop_string_t str;                                              \
 190                                                                         \
 191         str = prop_dictionary_get(dict, key);                           \
 192         if (prop_object_type(str) != PROP_TYPE_STRING)                  \
 193                 return (false);                                         \
 194                                                                         \
 195         *cpp = prop_string_cstring ## variant (str);                    \
 196                                                                         \
 197         return (*cpp == NULL ? false : true);                           \
 198 }                                                                       \
 199                                                                         \
 200 bool                                                            \
 201 prop_dictionary_set_cstring ## variant (prop_dictionary_t dict,         \
 202                                         const char *key,                \
 203                                         const char *cp)                 \
 204 {                                                                       \
 205         prop_string_t str;                                              \
 206         int rv;                                                         \
 207                                                                         \
 208         str = prop_string_create_cstring ## variant (cp);               \
 209         if (str == NULL)                                                \
 210                 return (false);                                         \
 211         rv = prop_dictionary_set(dict, key, str);                       \
 212         prop_object_release(str);                                       \
 213                                                                         \
 214         return (rv);                                                    \
 215 }
 216
 217 TEMPLATE(,)
 218 TEMPLATE(_nocopy,const)
 219
 220 #undef TEMPLATE
 221
 222 bool
 223 prop_dictionary_set_and_rel(prop_dictionary_t dict, const char *key,
 224     prop_object_t po)
 225 {
 226         bool ret;
 227         if (po == NULL)
 228                 return false;
 229         ret = prop_dictionary_set(dict, key, po);
 230         prop_object_release(po);
 231         return ret;
 232 }