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annotate src/name/blackcap/exifwasher/exiv2/native.cpp @ 2:efd9fe2d70d7

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Rationalize exceptions, code whitelist, add command-line tool.
author David Barts <n5jrn@me.com>
date Wed, 01 Apr 2020 14:23:54 -0700
parents 42277ce58ace
children a59d84674fb0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #include <jni.h>
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2 #include <exiv2/exiv2.hpp>
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3 #include <exception>
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4 #include <iostream>
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5 #include <iomanip>
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6 #include <cassert>
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7
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8 /* Functions for class name_blackcap_exifwasher_exiv2_Image */
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9
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10 #ifndef _Included_name_blackcap_exifwasher_exiv2_Image
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11 #define _Included_name_blackcap_exifwasher_exiv2_Image
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12 #ifdef __cplusplus
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13 extern "C" {
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14 #endif
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15
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16 /*
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17 * Utility function to get pointer field.
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18 */
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19 jlong getPointer(JNIEnv *jEnv, jobject jThis) {
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20 return jEnv->GetLongField(jThis, jEnv->GetFieldID(jEnv->GetObjectClass(jThis), "pointer", "J"));
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21 }
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22
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23 /*
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24 * Class: name_blackcap_exifwasher_exiv2_Image
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25 * Method: _ctor
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26 * Signature: (Ljava/lang/String;)J
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27 */
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28 JNIEXPORT jlong JNICALL Java_name_blackcap_exifwasher_exiv2_Image__1ctor
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29 (JNIEnv *jEnv, jobject jThis, jstring path) {
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30 const char *cPath = jEnv->GetStringUTFChars(path, NULL);
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31 jlong ret = 0;
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32 try {
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33 ret = reinterpret_cast<jlong> (Exiv2::ImageFactory::open(cPath).release());
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34 } catch (std::exception& e) {
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35 jEnv->ExceptionClear();
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36 jclass ex = jEnv->FindClass("name/blackcap/exifwasher/exiv2/Exiv2Exception");
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37 jEnv->ThrowNew(ex, e.what());
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38 }
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39 jEnv->ReleaseStringUTFChars(path, cPath);
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40 return ret;
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41 }
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42
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43 /*
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44 * Class: name_blackcap_exifwasher_exiv2_Image
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45 * Method: _writeMetadata
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46 * Signature: ()V
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47 */
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48 JNIEXPORT void JNICALL Java_name_blackcap_exifwasher_exiv2_Image__1writeMetadata
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49 (JNIEnv *jEnv, jobject jThis) {
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50 Exiv2::Image *image = reinterpret_cast<Exiv2::Image *> (getPointer(jEnv, jThis));
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51 if (jEnv->ExceptionCheck()) return;
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52 try {
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53 image->writeMetadata();
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54 } catch (std::exception& e) {
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55 jEnv->ExceptionClear();
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56 jclass ex = jEnv->FindClass("name/blackcap/exifwasher/exiv2/Exiv2Exception");
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57 jEnv->ThrowNew(ex, e.what());
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58 }
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59 }
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60
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61 /*
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62 * Class: name_blackcap_exifwasher_exiv2_Image
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63 * Method: _getMetadata
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64 * Signature: ()J
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65 */
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66 JNIEXPORT jlong JNICALL Java_name_blackcap_exifwasher_exiv2_Image__1getMetadata
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67 (JNIEnv *jEnv, jobject jThis) {
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68 Exiv2::Image *image = reinterpret_cast<Exiv2::Image *> (getPointer(jEnv, jThis));
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69 if (jEnv->ExceptionCheck()) return 0;
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70 try {
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71 image->readMetadata();
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72 } catch (std::exception& e) {
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73 jEnv->ExceptionClear();
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74 jclass ex = jEnv->FindClass("name/blackcap/exifwasher/exiv2/Exiv2Exception");
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75 jEnv->ThrowNew(ex, e.what());
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76 return 0;
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77 }
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78 return reinterpret_cast<jlong> (&(image->exifData()));
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79 }
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80
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81 /*
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82 * Class: name_blackcap_exifwasher_exiv2_Image
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83 * Method: _dtor
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84 * Signature: ()V
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85 */
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86 JNIEXPORT void JNICALL Java_name_blackcap_exifwasher_exiv2_Image__1dtor
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87 (JNIEnv *jEnv, jobject jThis) {
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88 Exiv2::Image *image = reinterpret_cast<Exiv2::Image *> (getPointer(jEnv, jThis));
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89 if (jEnv->ExceptionCheck()) return;
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90 delete image;
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91 }
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92
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93 #ifdef __cplusplus
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94 }
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95 #endif
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96 #endif
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97 /* Header for class name_blackcap_exifwasher_exiv2_ExifData */
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98
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99 #ifndef _Included_name_blackcap_exifwasher_exiv2_ExifData
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100 #define _Included_name_blackcap_exifwasher_exiv2_ExifData
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101 #ifdef __cplusplus
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102 extern "C" {
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103 #endif
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104 /*
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105 * Class: name_blackcap_exifwasher_exiv2_ExifData
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106 * Method: _erase
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107 * Signature: (Ljava/lang/String;)V
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108 */
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109 JNIEXPORT void JNICALL Java_name_blackcap_exifwasher_exiv2_ExifData__1erase
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110 (JNIEnv *jEnv, jobject jThis, jstring key) {
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111 Exiv2::ExifData *data = reinterpret_cast<Exiv2::ExifData *> (getPointer(jEnv, jThis));
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112 if (jEnv->ExceptionCheck()) return;
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113 const char *cKey = jEnv->GetStringUTFChars(key, NULL);
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114 Exiv2::ExifData::iterator found = data->findKey(Exiv2::ExifKey(std::string(cKey)));
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115 try {
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116 data->erase(found);
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117 } catch (std::exception& e) {
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118 jEnv->ExceptionClear();
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119 jclass ex = jEnv->FindClass("name/blackcap/exifwasher/exiv2/Exiv2Exception");
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120 jEnv->ThrowNew(ex, e.what());
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121 }
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122 jEnv->ReleaseStringUTFChars(key, cKey);
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123 }
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124
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125 /*
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126 * Class: name_blackcap_exifwasher_exiv2_ExifData
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127 * Method: _value
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128 * Signature: (Ljava/lang/String;)Lname/blackcap/exifwasher/exiv2/ExifData/Value;
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129 */
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130 JNIEXPORT jobject JNICALL Java_name_blackcap_exifwasher_exiv2_ExifData__1value
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131 (JNIEnv *jEnv, jobject jThis, jstring key) {
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132 Exiv2::ExifData *data = reinterpret_cast<Exiv2::ExifData *> (getPointer(jEnv, jThis));
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133 if (jEnv->ExceptionCheck()) return NULL;
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134 const char *cKey = jEnv->GetStringUTFChars(key, NULL);
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135 Exiv2::ExifData::const_iterator found = data->findKey(Exiv2::ExifKey(std::string(cKey)));
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136 jEnv->ReleaseStringUTFChars(key, cKey);
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137 if (found == data->end()) {
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138 return NULL;
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139 }
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140 jclass klass = jEnv->FindClass("name/blackcap/exifwasher/exiv2/ExifData$Value");
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141 if (jEnv->ExceptionCheck()) return NULL;
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142 jstring type = jEnv->NewStringUTF(found->typeName());
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143 jstring value = jEnv->NewStringUTF(found->toString().c_str());
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144 jmethodID method = jEnv->GetMethodID(klass, "<init>", "(Ljava/lang/String;Ljava/lang/String;)V");
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145 if (jEnv->ExceptionCheck()) return NULL;
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146 return jEnv->NewObject(klass, method, type, value);
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147 }
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148
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149 /*
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150 * Class: name_blackcap_exifwasher_exiv2_ExifData
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151 * Method: _keys
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152 * Signature: ()[Ljava/lang/String;
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153 */
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154 JNIEXPORT jobjectArray JNICALL Java_name_blackcap_exifwasher_exiv2_ExifData__1keys
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155 (JNIEnv *jEnv, jobject jThis) {
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156 Exiv2::ExifData *data = reinterpret_cast<Exiv2::ExifData *> (getPointer(jEnv, jThis));
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157 if (jEnv->ExceptionCheck()) return NULL;
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158 jclass klass = jEnv->FindClass("java/lang/String");
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159 if (jEnv->ExceptionCheck()) return NULL;
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160 jobjectArray ret = jEnv->NewObjectArray(data->count(), klass, NULL);
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161 if (jEnv->ExceptionCheck()) return NULL;
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162 Exiv2::ExifData::const_iterator end = data->end();
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163 jsize j = 0;
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164 for (Exiv2::ExifData::const_iterator i = data->begin(); i != end; ++i) {
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165 jEnv->SetObjectArrayElement(ret, j++, jEnv->NewStringUTF(i->key().c_str()));
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166 if (jEnv->ExceptionCheck()) break;
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167 }
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168 return ret;
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169 }
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170
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171 #ifdef __cplusplus
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172 }
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173 #endif
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174 #endif