Mercurial > trustbridge > nss-cmake-static

annotate nss/lib/base/item.c @ 4:b513267f632f tip

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Build DBM module
author Andre Heinecke <andre.heinecke@intevation.de>
date Tue, 05 Aug 2014 18:58:03 +0200
parents 1e5118fa0cb1
children
rev   line source
0
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1 /* This Source Code Form is subject to the terms of the Mozilla Public
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2 * License, v. 2.0. If a copy of the MPL was not distributed with this
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3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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4
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5 /*
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6 * item.c
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7 *
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8 * This contains some item-manipulation code.
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9 */
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10
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11 #ifndef BASE_H
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12 #include "base.h"
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13 #endif /* BASE_H */
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14
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15 /*
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16 * nssItem_Create
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17 *
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18 * -- fgmr comments --
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19 *
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20 * The error may be one of the following values:
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21 * NSS_ERROR_INVALID_ARENA
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22 * NSS_ERROR_NO_MEMORY
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23 * NSS_ERROR_ARENA_MARKED_BY_ANOTHER_THREAD
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24 * NSS_ERROR_INVALID_POINTER
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25 *
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26 * Return value:
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27 * A pointer to an NSSItem upon success
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28 * NULL upon failure
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29 */
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30
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31 NSS_IMPLEMENT NSSItem *
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32 nssItem_Create
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33 (
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34 NSSArena *arenaOpt,
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35 NSSItem *rvOpt,
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36 PRUint32 length,
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37 const void *data
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38 )
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39 {
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40 NSSItem *rv = (NSSItem *)NULL;
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41
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42 #ifdef DEBUG
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43 if( (NSSArena *)NULL != arenaOpt ) {
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44 if( PR_SUCCESS != nssArena_verifyPointer(arenaOpt) ) {
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45 return (NSSItem *)NULL;
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46 }
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47 }
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48
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49 if( (const void *)NULL == data ) {
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50 if( length > 0 ) {
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51 nss_SetError(NSS_ERROR_INVALID_POINTER);
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52 return (NSSItem *)NULL;
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53 }
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54 }
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55 #endif /* DEBUG */
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56
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57 if( (NSSItem *)NULL == rvOpt ) {
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58 rv = (NSSItem *)nss_ZNEW(arenaOpt, NSSItem);
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59 if( (NSSItem *)NULL == rv ) {
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60 goto loser;
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61 }
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62 } else {
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63 rv = rvOpt;
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64 }
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65
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66 rv->size = length;
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67 rv->data = nss_ZAlloc(arenaOpt, length);
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68 if( (void *)NULL == rv->data ) {
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69 goto loser;
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70 }
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71
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72 if( length > 0 ) {
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73 (void)nsslibc_memcpy(rv->data, data, length);
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74 }
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75
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76 return rv;
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77
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78 loser:
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79 if( rv != rvOpt ) {
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80 nss_ZFreeIf(rv);
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81 }
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82
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83 return (NSSItem *)NULL;
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84 }
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85
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86 NSS_IMPLEMENT void
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87 nssItem_Destroy
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88 (
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89 NSSItem *item
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90 )
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91 {
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92 nss_ClearErrorStack();
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93
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94 nss_ZFreeIf(item->data);
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95 nss_ZFreeIf(item);
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96
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97 }
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98
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99 /*
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100 * nssItem_Duplicate
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101 *
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102 * -- fgmr comments --
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103 *
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104 * The error may be one of the following values:
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105 * NSS_ERROR_INVALID_ARENA
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106 * NSS_ERROR_NO_MEMORY
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107 * NSS_ERROR_ARENA_MARKED_BY_ANOTHER_THREAD
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108 * NSS_ERROR_INVALID_ITEM
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109 *
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110 * Return value:
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111 * A pointer to an NSSItem upon success
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112 * NULL upon failure
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113 */
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114
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115 NSS_IMPLEMENT NSSItem *
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116 nssItem_Duplicate
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117 (
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118 NSSItem *obj,
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119 NSSArena *arenaOpt,
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120 NSSItem *rvOpt
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121 )
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122 {
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123 #ifdef DEBUG
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124 if( (NSSArena *)NULL != arenaOpt ) {
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125 if( PR_SUCCESS != nssArena_verifyPointer(arenaOpt) ) {
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126 return (NSSItem *)NULL;
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127 }
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128 }
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129
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130 if( (NSSItem *)NULL == obj ) {
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131 nss_SetError(NSS_ERROR_INVALID_ITEM);
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132 return (NSSItem *)NULL;
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133 }
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134 #endif /* DEBUG */
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135
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136 return nssItem_Create(arenaOpt, rvOpt, obj->size, obj->data);
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137 }
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138
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139 #ifdef DEBUG
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140 /*
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141 * nssItem_verifyPointer
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142 *
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143 * -- fgmr comments --
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144 *
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145 * The error may be one of the following values:
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146 * NSS_ERROR_INVALID_ITEM
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147 *
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148 * Return value:
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149 * PR_SUCCESS upon success
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150 * PR_FAILURE upon failure
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151 */
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152
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153 NSS_IMPLEMENT PRStatus
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154 nssItem_verifyPointer
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155 (
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156 const NSSItem *item
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157 )
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158 {
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159 if( ((const NSSItem *)NULL == item) ||
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160 (((void *)NULL == item->data) && (item->size > 0)) ) {
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161 nss_SetError(NSS_ERROR_INVALID_ITEM);
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162 return PR_FAILURE;
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163 }
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164
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165 return PR_SUCCESS;
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166 }
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167 #endif /* DEBUG */
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168
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169 /*
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170 * nssItem_Equal
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171 *
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172 * -- fgmr comments --
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173 *
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174 * The error may be one of the following values:
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175 * NSS_ERROR_INVALID_ITEM
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176 *
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177 * Return value:
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178 * PR_TRUE if the items are identical
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179 * PR_FALSE if they aren't
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180 * PR_FALSE upon error
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181 */
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182
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183 NSS_IMPLEMENT PRBool
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184 nssItem_Equal
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185 (
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186 const NSSItem *one,
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187 const NSSItem *two,
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188 PRStatus *statusOpt
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189 )
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190 {
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191 if( (PRStatus *)NULL != statusOpt ) {
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192 *statusOpt = PR_SUCCESS;
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193 }
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194
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195 if( ((const NSSItem *)NULL == one) && ((const NSSItem *)NULL == two) ) {
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196 return PR_TRUE;
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197 }
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198
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199 if( ((const NSSItem *)NULL == one) || ((const NSSItem *)NULL == two) ) {
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200 return PR_FALSE;
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201 }
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202
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203 if( one->size != two->size ) {
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204 return PR_FALSE;
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205 }
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206
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207 return nsslibc_memequal(one->data, two->data, one->size, statusOpt);
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208 }
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