1 | /* |
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2 | * Licensed to the Apache Software Foundation (ASF) under one or more |
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3 | * contributor license agreements. See the NOTICE file distributed with |
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4 | * this work for additional information regarding copyright ownership. |
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5 | * The ASF licenses this file to You under the Apache License, Version 2.0 |
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6 | * (the "License"); you may not use this file except in compliance with |
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7 | * the License. You may obtain a copy of the License at |
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8 | * |
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9 | * http://www.apache.org/licenses/LICENSE-2.0 |
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10 | * |
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11 | * Unless required by applicable law or agreed to in writing, software |
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12 | * distributed under the License is distributed on an "AS IS" BASIS, |
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13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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14 | * See the License for the specific language governing permissions and |
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15 | * limitations under the License. |
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16 | */ |
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17 | |
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18 | /* |
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19 | * $Id: XSerializeEngine.cpp 834826 2009-11-11 10:03:53Z borisk $ |
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20 | */ |
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21 | |
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22 | |
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23 | // --------------------------------------------------------------------------- |
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24 | // Includes |
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25 | // --------------------------------------------------------------------------- |
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26 | #include <xercesc/internal/XSerializeEngine.hpp> |
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27 | #include <xercesc/internal/XSerializable.hpp> |
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28 | #include <xercesc/internal/XProtoType.hpp> |
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29 | |
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30 | #include <icxercesc/framework/XMLGrammarPool.hpp> |
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31 | #include <xercesc/framework/BinOutputStream.hpp> |
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32 | #include <xercesc/util/BinInputStream.hpp> |
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33 | |
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34 | #include <stdio.h> |
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35 | #include <assert.h> |
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36 | |
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37 | XERCES_CPP_NAMESPACE_BEGIN |
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38 | |
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39 | const bool XSerializeEngine::toWriteBufferLen = true; |
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40 | const bool XSerializeEngine::toReadBufferLen = true; |
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41 | |
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42 | static const unsigned long noDataFollowed = (unsigned long)-1; |
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43 | |
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44 | static const XSerializeEngine::XSerializedObjectId_t fgNullObjectTag = 0; // indicating null ptrs |
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45 | static const XSerializeEngine::XSerializedObjectId_t fgNewClassTag = 0xFFFFFFFF; // indicating new class |
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46 | static const XSerializeEngine::XSerializedObjectId_t fgTemplateObjTag = 0xFFFFFFFE; // indicating template object |
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47 | static const XSerializeEngine::XSerializedObjectId_t fgClassMask = 0x80000000; // indicates class tag |
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48 | static const XSerializeEngine::XSerializedObjectId_t fgMaxObjectCount = 0x3FFFFFFD; |
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49 | |
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50 | #define TEST_THROW_ARG1(condition, data, err_msg) \ |
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51 | if (condition) \ |
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52 | { \ |
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53 | XMLCh value1[64]; \ |
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54 | XMLString::sizeToText(data, value1, 65, 10, getMemoryManager()); \ |
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55 | ThrowXMLwithMemMgr1(XSerializationException \ |
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56 | , err_msg \ |
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57 | , value1 \ |
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58 | , getMemoryManager()); \ |
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59 | } |
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60 | |
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61 | #define TEST_THROW_ARG2(condition, data1, data2, err_msg) \ |
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62 | if (condition) \ |
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63 | { \ |
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64 | XMLCh value1[64]; \ |
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65 | XMLCh value2[64]; \ |
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66 | XMLString::sizeToText(data1, value1, 65, 10, getMemoryManager()); \ |
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67 | XMLString::sizeToText(data2, value2, 65, 10, getMemoryManager()); \ |
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68 | ThrowXMLwithMemMgr2(XSerializationException \ |
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69 | , err_msg \ |
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70 | , value1 \ |
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71 | , value2 \ |
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72 | , getMemoryManager()); \ |
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73 | } |
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74 | |
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75 | // --------------------------------------------------------------------------- |
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76 | // Constructor and Destructor |
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77 | // --------------------------------------------------------------------------- |
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78 | XSerializeEngine::~XSerializeEngine() |
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79 | { |
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80 | if (isStoring()) |
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81 | { |
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82 | flush(); |
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83 | delete fStorePool; |
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84 | } |
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85 | else |
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86 | { |
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87 | delete fLoadPool; |
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88 | } |
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89 | |
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90 | getMemoryManager()->deallocate(fBufStart); |
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91 | |
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92 | } |
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93 | |
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94 | XSerializeEngine::XSerializeEngine(BinInputStream* inStream |
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95 | , XMLGrammarPool* const gramPool |
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96 | , XMLSize_t bufSize) |
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97 | :fStoreLoad(mode_Load) |
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98 | ,fStorerLevel(0) |
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99 | ,fGrammarPool(gramPool) |
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100 | ,fInputStream(inStream) |
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101 | ,fOutputStream(0) |
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102 | ,fBufCount(0) |
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103 | ,fBufSize(bufSize) |
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104 | ,fBufStart( (XMLByte*) gramPool->getMemoryManager()->allocate(bufSize)) |
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105 | ,fBufEnd(0) |
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106 | ,fBufCur(fBufStart) |
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107 | ,fBufLoadMax(fBufStart) |
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108 | ,fStorePool(0) |
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109 | ,fLoadPool( new (gramPool->getMemoryManager()) ValueVectorOf<void*>(29, gramPool->getMemoryManager(), false)) |
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110 | ,fObjectCount(0) |
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111 | { |
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112 | /*** |
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113 | * initialize buffer from the inStream |
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114 | ***/ |
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115 | fillBuffer(); |
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116 | |
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117 | } |
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118 | |
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119 | XSerializeEngine::XSerializeEngine(BinOutputStream* outStream |
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120 | , XMLGrammarPool* const gramPool |
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121 | , XMLSize_t bufSize) |
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122 | :fStoreLoad(mode_Store) |
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123 | ,fStorerLevel(0) |
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124 | ,fGrammarPool(gramPool) |
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125 | ,fInputStream(0) |
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126 | ,fOutputStream(outStream) |
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127 | ,fBufCount(0) |
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128 | ,fBufSize(bufSize) |
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129 | ,fBufStart((XMLByte*) gramPool->getMemoryManager()->allocate(bufSize)) |
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130 | ,fBufEnd(fBufStart+bufSize) |
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131 | ,fBufCur(fBufStart) |
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132 | ,fBufLoadMax(0) |
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133 | ,fStorePool( new (gramPool->getMemoryManager()) RefHashTableOf<XSerializedObjectId, PtrHasher>(29, true, gramPool->getMemoryManager()) ) |
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134 | ,fLoadPool(0) |
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135 | ,fObjectCount(0) |
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136 | { |
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137 | resetBuffer(); |
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138 | |
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139 | //initialize store pool |
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140 | fStorePool->put(0, new (gramPool->getMemoryManager()) XSerializedObjectId(fgNullObjectTag)); |
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141 | |
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142 | } |
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143 | |
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144 | void XSerializeEngine::flush() |
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145 | { |
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146 | if (isStoring()) |
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147 | flushBuffer(); |
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148 | |
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149 | } |
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150 | |
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151 | // --------------------------------------------------------------------------- |
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152 | // Storing |
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153 | // --------------------------------------------------------------------------- |
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154 | void XSerializeEngine::write(XSerializable* const objectToWrite) |
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155 | { |
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156 | ensureStoring(); |
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157 | //don't ensurePointer here !!! |
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158 | |
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159 | XSerializedObjectId_t objIndex = 0; |
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160 | |
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161 | if (!objectToWrite) // null pointer |
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162 | { |
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163 | *this << fgNullObjectTag; |
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164 | } |
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165 | else if (0 != (objIndex = lookupStorePool((void*) objectToWrite))) |
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166 | { |
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167 | // writing an object reference tag |
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168 | *this << objIndex; |
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169 | } |
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170 | else |
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171 | { |
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172 | // write protoType first |
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173 | XProtoType* protoType = objectToWrite->getProtoType(); |
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174 | write(protoType); |
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175 | |
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176 | // put the object into StorePool |
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177 | addStorePool((void*)objectToWrite); |
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178 | |
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179 | // ask the object to serialize itself |
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180 | objectToWrite->serialize(*this); |
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181 | } |
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182 | |
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183 | } |
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184 | |
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185 | void XSerializeEngine::write(XProtoType* const protoType) |
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186 | { |
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187 | ensureStoring(); |
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188 | ensurePointer(protoType); |
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189 | |
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190 | XSerializedObjectId_t objIndex = lookupStorePool((void*)protoType); |
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191 | |
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192 | if (objIndex) |
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193 | { |
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194 | //protoType seen in the store pool |
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195 | *this << (fgClassMask | objIndex); |
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196 | } |
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197 | else |
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198 | { |
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199 | // store protoType |
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200 | *this << fgNewClassTag; |
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201 | protoType->store(*this); |
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202 | addStorePool((void*)protoType); |
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203 | } |
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204 | |
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205 | } |
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206 | |
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207 | /*** |
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208 | * |
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209 | ***/ |
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210 | void XSerializeEngine::write(const XMLCh* const toWrite |
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211 | , XMLSize_t writeLen) |
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212 | { |
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213 | write((XMLByte*)toWrite, (sizeof(XMLCh)/sizeof(XMLByte)) * writeLen); |
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214 | } |
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215 | |
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216 | |
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217 | void XSerializeEngine::write(const XMLByte* const toWrite |
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218 | , XMLSize_t writeLen) |
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219 | { |
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220 | ensureStoring(); |
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221 | ensurePointer((void*)toWrite); |
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222 | ensureStoreBuffer(); |
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223 | |
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224 | if (writeLen == 0) |
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225 | return; |
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226 | |
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227 | /*** |
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228 | * If the available space is sufficient, write it up |
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229 | ***/ |
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230 | XMLSize_t bufAvail = fBufEnd - fBufCur; |
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231 | |
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232 | if (writeLen <= bufAvail) |
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233 | { |
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234 | memcpy(fBufCur, toWrite, writeLen); |
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235 | fBufCur += writeLen; |
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236 | return; |
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237 | } |
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238 | |
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239 | const XMLByte* tempWrite = (const XMLByte*) toWrite; |
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240 | XMLSize_t writeRemain = writeLen; |
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241 | |
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242 | // fill up the avaiable space and flush |
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243 | memcpy(fBufCur, tempWrite, bufAvail); |
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244 | tempWrite += bufAvail; |
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245 | writeRemain -= bufAvail; |
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246 | flushBuffer(); |
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247 | |
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248 | // write chunks of fBufSize |
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249 | while (writeRemain >= fBufSize) |
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250 | { |
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251 | memcpy(fBufCur, tempWrite, fBufSize); |
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252 | tempWrite += fBufSize; |
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253 | writeRemain -= fBufSize; |
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254 | flushBuffer(); |
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255 | } |
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256 | |
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257 | // write the remaining if any |
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258 | if (writeRemain) |
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259 | { |
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260 | memcpy(fBufCur, tempWrite, writeRemain); |
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261 | fBufCur += writeRemain; |
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262 | } |
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263 | |
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264 | } |
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265 | |
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266 | /*** |
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267 | * |
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268 | * Storage scheme (normal): |
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269 | * |
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270 | * < |
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271 | * 1st integer: bufferLen (optional) |
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272 | * 2nd integer: dataLen |
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273 | * bytes following: |
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274 | * > |
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275 | * |
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276 | * Storage scheme (special): |
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277 | * < |
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278 | * only integer: noDataFollowed |
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279 | * > |
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280 | */ |
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281 | |
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282 | void XSerializeEngine::writeString(const XMLCh* const toWrite |
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283 | , const XMLSize_t bufferLen |
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284 | , bool toWriteBufLen) |
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285 | { |
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286 | if (toWrite) |
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287 | { |
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288 | if (toWriteBufLen) |
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289 | *this<<(unsigned long)bufferLen; |
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290 | |
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291 | XMLSize_t strLen = XMLString::stringLen(toWrite); |
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292 | *this<<(unsigned long)strLen; |
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293 | |
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294 | write(toWrite, strLen); |
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295 | } |
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296 | else |
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297 | { |
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298 | *this<<noDataFollowed; |
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299 | } |
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300 | |
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301 | } |
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302 | |
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303 | void XSerializeEngine::writeString(const XMLByte* const toWrite |
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304 | , const XMLSize_t bufferLen |
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305 | , bool toWriteBufLen) |
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306 | { |
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307 | |
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308 | if (toWrite) |
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309 | { |
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310 | if (toWriteBufLen) |
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311 | *this<<(unsigned long)bufferLen; |
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312 | |
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313 | XMLSize_t strLen = XMLString::stringLen((char*)toWrite); |
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314 | *this<<(unsigned long)strLen; |
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315 | write(toWrite, strLen); |
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316 | } |
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317 | else |
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318 | { |
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319 | *this<<noDataFollowed; |
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320 | } |
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321 | |
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322 | } |
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323 | |
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324 | // --------------------------------------------------------------------------- |
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325 | // Loading |
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326 | // --------------------------------------------------------------------------- |
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327 | XSerializable* XSerializeEngine::read(XProtoType* const protoType) |
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328 | { |
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329 | ensureLoading(); |
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330 | ensurePointer(protoType); |
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331 | |
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332 | XSerializedObjectId_t objectTag; |
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333 | XSerializable* objRet; |
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334 | |
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335 | if (! read(protoType, &objectTag)) |
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336 | { |
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337 | /*** |
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338 | * We hava a reference to an existing object in |
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339 | * load pool, get it. |
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340 | */ |
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341 | objRet = lookupLoadPool(objectTag); |
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342 | } |
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343 | else |
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344 | { |
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345 | // create the object from the prototype |
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346 | objRet = protoType->fCreateObject(getMemoryManager()); |
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347 | Assert((objRet != 0), XMLExcepts::XSer_CreateObject_Fail); |
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348 | |
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349 | // put it into load pool |
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350 | addLoadPool(objRet); |
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351 | |
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352 | // de-serialize it |
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353 | objRet->serialize(*this); |
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354 | |
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355 | } |
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356 | |
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357 | return objRet; |
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358 | } |
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359 | |
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360 | bool XSerializeEngine::read(XProtoType* const protoType |
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361 | , XSerializedObjectId_t* objectTagRet) |
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362 | { |
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363 | ensureLoading(); |
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364 | ensurePointer(protoType); |
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365 | |
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366 | XSerializedObjectId_t obTag; |
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367 | |
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368 | *this >> obTag; |
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369 | |
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370 | // object reference tag found |
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371 | if (!(obTag & fgClassMask)) |
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372 | { |
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373 | *objectTagRet = obTag; |
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374 | return false; |
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375 | } |
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376 | |
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377 | if (obTag == fgNewClassTag) |
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378 | { |
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379 | // what follows fgNewClassTag is the prototype object info |
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380 | // for the object anticipated, go and verify the info |
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381 | XProtoType::load(*this, protoType->fClassName, getMemoryManager()); |
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382 | |
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383 | addLoadPool((void*)protoType); |
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384 | } |
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385 | else |
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386 | { |
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387 | // what follows class tag is an XSerializable object |
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388 | XSerializedObjectId_t classIndex = (obTag & ~fgClassMask); |
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389 | XSerializedObjectId_t loadPoolSize = (XSerializedObjectId_t)fLoadPool->size(); |
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390 | |
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391 | if ((classIndex == 0 ) || (classIndex > loadPoolSize)) |
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392 | { |
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393 | XMLCh value1[64]; |
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394 | XMLCh value2[64]; |
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395 | XMLString::binToText(classIndex, value1, 65, 10, getMemoryManager()); |
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396 | XMLString::binToText(loadPoolSize, value2, 65, 10, getMemoryManager()); |
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397 | ThrowXMLwithMemMgr2(XSerializationException |
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398 | , XMLExcepts::XSer_Inv_ClassIndex |
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399 | , value1 |
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400 | , value2 |
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401 | , getMemoryManager()); |
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402 | } |
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403 | |
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404 | ensurePointer(lookupLoadPool(classIndex)); |
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405 | } |
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406 | |
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407 | return true; |
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408 | } |
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409 | |
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410 | void XSerializeEngine::read(XMLCh* const toRead |
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411 | , XMLSize_t readLen) |
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412 | { |
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413 | read((XMLByte*)toRead, (sizeof(XMLCh)/sizeof(XMLByte))*readLen); |
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414 | } |
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415 | |
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416 | void XSerializeEngine::read(XMLByte* const toRead |
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417 | , XMLSize_t readLen) |
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418 | { |
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419 | ensureLoading(); |
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420 | ensurePointer(toRead); |
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421 | ensureLoadBuffer(); |
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422 | |
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423 | if (readLen == 0) |
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424 | return; |
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425 | |
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426 | /*** |
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427 | * If unread is sufficient, read it up |
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428 | ***/ |
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429 | XMLSize_t dataAvail = fBufLoadMax - fBufCur; |
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430 | |
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431 | if (readLen <= dataAvail) |
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432 | { |
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433 | memcpy(toRead, fBufCur, readLen); |
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434 | fBufCur += readLen; |
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435 | return; |
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436 | } |
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437 | |
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438 | /*** |
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439 | * |
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440 | * fillBuffer will discard anything left in the buffer |
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441 | * before it asks the inputStream to fill in the buffer, |
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442 | * so we need to readup everything in the buffer before |
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443 | * calling fillBuffer |
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444 | * |
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445 | ***/ |
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446 | XMLByte* tempRead = (XMLByte*) toRead; |
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447 | XMLSize_t readRemain = readLen; |
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448 | |
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449 | // read the unread |
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450 | memcpy(tempRead, fBufCur, dataAvail); |
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451 | tempRead += dataAvail; |
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452 | readRemain -= dataAvail; |
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453 | |
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454 | // read chunks of fBufSize |
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455 | while (readRemain >= fBufSize) |
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456 | { |
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457 | fillBuffer(); |
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458 | memcpy(tempRead, fBufCur, fBufSize); |
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459 | tempRead += fBufSize; |
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460 | readRemain -= fBufSize; |
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461 | } |
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462 | |
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463 | // read the remaining if any |
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464 | if (readRemain) |
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465 | { |
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466 | fillBuffer(); |
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467 | memcpy(tempRead, fBufCur, readRemain); |
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468 | fBufCur += readRemain; |
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469 | } |
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470 | |
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471 | } |
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472 | |
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473 | /*** |
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474 | * |
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475 | * Storage scheme (normal): |
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476 | * |
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477 | * < |
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478 | * 1st integer: bufferLen (optional) |
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479 | * 2nd integer: dataLen |
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480 | * bytes following: |
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481 | * > |
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482 | * |
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483 | * Storage scheme (special): |
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484 | * < |
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485 | * only integer: noDataFollowed |
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486 | * > |
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487 | */ |
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488 | void XSerializeEngine::readString(XMLCh*& toRead |
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489 | , XMLSize_t& bufferLen |
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490 | , XMLSize_t& dataLen |
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491 | , bool toReadBufLen) |
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492 | { |
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493 | /*** |
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494 | * Check if any data written |
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495 | ***/ |
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496 | unsigned long tmp; |
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497 | *this>>tmp; |
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498 | bufferLen=tmp; |
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499 | |
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500 | if (bufferLen == noDataFollowed) |
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501 | { |
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502 | toRead = 0; |
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503 | bufferLen = 0; |
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504 | dataLen = 0; |
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505 | return; |
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506 | } |
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507 | |
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508 | if (toReadBufLen) |
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509 | { |
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510 | *this>>tmp; |
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511 | dataLen=tmp; |
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512 | } |
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513 | else |
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514 | { |
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515 | dataLen = bufferLen++; |
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516 | } |
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517 | |
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518 | toRead = (XMLCh*) getMemoryManager()->allocate(bufferLen * sizeof(XMLCh)); |
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519 | read(toRead, dataLen); |
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520 | toRead[dataLen] = 0; |
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521 | } |
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522 | |
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523 | void XSerializeEngine::readString(XMLByte*& toRead |
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524 | , XMLSize_t& bufferLen |
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525 | , XMLSize_t& dataLen |
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526 | , bool toReadBufLen) |
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527 | { |
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528 | /*** |
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529 | * Check if any data written |
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530 | ***/ |
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531 | unsigned long tmp; |
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532 | *this>>tmp; |
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533 | bufferLen=tmp; |
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534 | if (bufferLen == noDataFollowed) |
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535 | { |
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536 | toRead = 0; |
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537 | bufferLen = 0; |
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538 | dataLen = 0; |
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539 | return; |
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540 | } |
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541 | |
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542 | if (toReadBufLen) |
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543 | { |
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544 | *this>>tmp; |
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545 | dataLen=tmp; |
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546 | } |
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547 | else |
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548 | { |
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549 | dataLen = bufferLen++; |
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550 | } |
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551 | |
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552 | toRead = (XMLByte*) getMemoryManager()->allocate(bufferLen * sizeof(XMLByte)); |
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553 | read(toRead, dataLen); |
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554 | toRead[dataLen] = 0; |
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555 | |
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556 | } |
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557 | |
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558 | // --------------------------------------------------------------------------- |
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559 | // Insertion & Extraction |
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560 | // --------------------------------------------------------------------------- |
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561 | |
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562 | XSerializeEngine& XSerializeEngine::operator<<(XMLCh xch) |
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563 | { |
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564 | checkAndFlushBuffer(calBytesNeeded(sizeof(XMLCh))); |
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565 | |
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566 | alignBufCur(sizeof(XMLCh)); |
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567 | *(XMLCh*)fBufCur = xch; |
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568 | fBufCur += sizeof(XMLCh); |
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569 | return *this; |
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570 | } |
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571 | |
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572 | XSerializeEngine& XSerializeEngine::operator>>(XMLCh& xch) |
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573 | { |
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574 | checkAndFillBuffer(calBytesNeeded(sizeof(XMLCh))); |
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575 | |
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576 | alignBufCur(sizeof(XMLCh)); |
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577 | xch = *(XMLCh*)fBufCur; |
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578 | fBufCur += sizeof(XMLCh); |
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579 | return *this; |
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580 | } |
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581 | |
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582 | XSerializeEngine& XSerializeEngine::operator<<(XMLByte by) |
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583 | { |
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584 | checkAndFlushBuffer(sizeof(XMLByte)); |
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585 | |
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586 | *(XMLByte*)fBufCur = by; |
---|
587 | fBufCur += sizeof(XMLByte); |
---|
588 | return *this; |
---|
589 | } |
---|
590 | |
---|
591 | XSerializeEngine& XSerializeEngine::operator>>(XMLByte& by) |
---|
592 | { |
---|
593 | checkAndFillBuffer(sizeof(XMLByte)); |
---|
594 | |
---|
595 | by = *(XMLByte*)fBufCur; |
---|
596 | fBufCur += sizeof(XMLByte); |
---|
597 | return *this; |
---|
598 | } |
---|
599 | |
---|
600 | XSerializeEngine& XSerializeEngine::operator<<(bool b) |
---|
601 | { |
---|
602 | checkAndFlushBuffer(sizeof(bool)); |
---|
603 | |
---|
604 | *(bool*)fBufCur = b; |
---|
605 | fBufCur += sizeof(bool); |
---|
606 | return *this; |
---|
607 | } |
---|
608 | |
---|
609 | XSerializeEngine& XSerializeEngine::operator>>(bool& b) |
---|
610 | { |
---|
611 | checkAndFillBuffer(sizeof(bool)); |
---|
612 | |
---|
613 | b = *(bool*)fBufCur; |
---|
614 | fBufCur += sizeof(bool); |
---|
615 | return *this; |
---|
616 | } |
---|
617 | |
---|
618 | void XSerializeEngine::writeSize (XMLSize_t t) |
---|
619 | { |
---|
620 | checkAndFlushBuffer(sizeof(t)); |
---|
621 | |
---|
622 | memcpy(fBufCur, &t, sizeof(t)); |
---|
623 | fBufCur += sizeof(t); |
---|
624 | } |
---|
625 | |
---|
626 | void XSerializeEngine::writeInt64 (XMLInt64 t) |
---|
627 | { |
---|
628 | checkAndFlushBuffer(sizeof(t)); |
---|
629 | |
---|
630 | memcpy(fBufCur, &t, sizeof(t)); |
---|
631 | fBufCur += sizeof(t); |
---|
632 | } |
---|
633 | |
---|
634 | void XSerializeEngine::writeUInt64 (XMLUInt64 t) |
---|
635 | { |
---|
636 | checkAndFlushBuffer(sizeof(t)); |
---|
637 | |
---|
638 | memcpy(fBufCur, &t, sizeof(t)); |
---|
639 | fBufCur += sizeof(t); |
---|
640 | } |
---|
641 | |
---|
642 | void XSerializeEngine::readSize (XMLSize_t& t) |
---|
643 | { |
---|
644 | checkAndFillBuffer(sizeof(t)); |
---|
645 | |
---|
646 | memcpy(&t, fBufCur, sizeof(t)); |
---|
647 | fBufCur += sizeof(t); |
---|
648 | } |
---|
649 | |
---|
650 | void XSerializeEngine::readInt64 (XMLInt64& t) |
---|
651 | { |
---|
652 | checkAndFillBuffer(sizeof(t)); |
---|
653 | |
---|
654 | memcpy(&t, fBufCur, sizeof(t)); |
---|
655 | fBufCur += sizeof(t); |
---|
656 | } |
---|
657 | |
---|
658 | void XSerializeEngine::readUInt64 (XMLUInt64& t) |
---|
659 | { |
---|
660 | checkAndFillBuffer(sizeof(t)); |
---|
661 | |
---|
662 | memcpy(&t, fBufCur, sizeof(t)); |
---|
663 | fBufCur += sizeof(t); |
---|
664 | } |
---|
665 | |
---|
666 | XSerializeEngine& XSerializeEngine::operator<<(char ch) |
---|
667 | { |
---|
668 | return XSerializeEngine::operator<<((XMLByte)ch); |
---|
669 | } |
---|
670 | |
---|
671 | XSerializeEngine& XSerializeEngine::operator>>(char& ch) |
---|
672 | { |
---|
673 | return XSerializeEngine::operator>>((XMLByte&)ch); |
---|
674 | } |
---|
675 | |
---|
676 | XSerializeEngine& XSerializeEngine::operator<<(short sh) |
---|
677 | { |
---|
678 | checkAndFlushBuffer(calBytesNeeded(sizeof(short))); |
---|
679 | |
---|
680 | alignBufCur(sizeof(short)); |
---|
681 | *(short*)fBufCur = sh; |
---|
682 | fBufCur += sizeof(short); |
---|
683 | return *this; |
---|
684 | } |
---|
685 | |
---|
686 | XSerializeEngine& XSerializeEngine::operator>>(short& sh) |
---|
687 | { |
---|
688 | checkAndFillBuffer(calBytesNeeded(sizeof(short))); |
---|
689 | |
---|
690 | alignBufCur(sizeof(short)); |
---|
691 | sh = *(short*)fBufCur; |
---|
692 | fBufCur += sizeof(short); |
---|
693 | return *this; |
---|
694 | } |
---|
695 | |
---|
696 | XSerializeEngine& XSerializeEngine::operator<<(int i) |
---|
697 | { |
---|
698 | checkAndFlushBuffer(calBytesNeeded(sizeof(int))); |
---|
699 | |
---|
700 | alignBufCur(sizeof(int)); |
---|
701 | *(int*)fBufCur = i; |
---|
702 | fBufCur += sizeof(int); |
---|
703 | return *this; |
---|
704 | } |
---|
705 | |
---|
706 | XSerializeEngine& XSerializeEngine::operator>>(int& i) |
---|
707 | { |
---|
708 | checkAndFillBuffer(calBytesNeeded(sizeof(int))); |
---|
709 | |
---|
710 | alignBufCur(sizeof(int)); |
---|
711 | i = *(int*)fBufCur; |
---|
712 | fBufCur += sizeof(int); |
---|
713 | return *this; |
---|
714 | } |
---|
715 | |
---|
716 | XSerializeEngine& XSerializeEngine::operator<<(unsigned int ui) |
---|
717 | { |
---|
718 | |
---|
719 | checkAndFlushBuffer(calBytesNeeded(sizeof(unsigned int))); |
---|
720 | |
---|
721 | alignBufCur(sizeof(unsigned int)); |
---|
722 | *(unsigned int*)fBufCur = ui; |
---|
723 | fBufCur += sizeof(unsigned int); |
---|
724 | return *this; |
---|
725 | } |
---|
726 | |
---|
727 | XSerializeEngine& XSerializeEngine::operator>>(unsigned int& ui) |
---|
728 | { |
---|
729 | |
---|
730 | checkAndFillBuffer(calBytesNeeded(sizeof(unsigned int))); |
---|
731 | |
---|
732 | alignBufCur(sizeof(unsigned int)); |
---|
733 | ui = *(unsigned int*)fBufCur; |
---|
734 | fBufCur += sizeof(unsigned int); |
---|
735 | return *this; |
---|
736 | } |
---|
737 | |
---|
738 | XSerializeEngine& XSerializeEngine::operator<<(long l) |
---|
739 | { |
---|
740 | checkAndFlushBuffer(calBytesNeeded(sizeof(long))); |
---|
741 | |
---|
742 | alignBufCur(sizeof(long)); |
---|
743 | *(long*)fBufCur = l; |
---|
744 | fBufCur += sizeof(long); |
---|
745 | return *this; |
---|
746 | } |
---|
747 | |
---|
748 | XSerializeEngine& XSerializeEngine::operator>>(long& l) |
---|
749 | { |
---|
750 | checkAndFillBuffer(calBytesNeeded(sizeof(long))); |
---|
751 | |
---|
752 | alignBufCur(sizeof(long)); |
---|
753 | l = *(long*)fBufCur; |
---|
754 | fBufCur += sizeof(long); |
---|
755 | return *this; |
---|
756 | } |
---|
757 | |
---|
758 | XSerializeEngine& XSerializeEngine::operator<<(unsigned long ul) |
---|
759 | { |
---|
760 | checkAndFlushBuffer(calBytesNeeded(sizeof(unsigned long))); |
---|
761 | |
---|
762 | alignBufCur(sizeof(unsigned long)); |
---|
763 | *(unsigned long*)fBufCur = ul; |
---|
764 | fBufCur += sizeof(unsigned long); |
---|
765 | return *this; |
---|
766 | } |
---|
767 | |
---|
768 | XSerializeEngine& XSerializeEngine::operator>>(unsigned long& ul) |
---|
769 | { |
---|
770 | checkAndFillBuffer(calBytesNeeded(sizeof(unsigned long))); |
---|
771 | |
---|
772 | alignBufCur(sizeof(unsigned long)); |
---|
773 | ul = *(unsigned long*)fBufCur; |
---|
774 | fBufCur += sizeof(unsigned long); |
---|
775 | return *this; |
---|
776 | } |
---|
777 | |
---|
778 | XSerializeEngine& XSerializeEngine::operator<<(float f) |
---|
779 | { |
---|
780 | checkAndFlushBuffer(calBytesNeeded(sizeof(float))); |
---|
781 | |
---|
782 | alignBufCur(sizeof(float)); |
---|
783 | *(float*)fBufCur = *(float*)&f; |
---|
784 | fBufCur += sizeof(float); |
---|
785 | return *this; |
---|
786 | } |
---|
787 | |
---|
788 | XSerializeEngine& XSerializeEngine::operator>>(float& f) |
---|
789 | { |
---|
790 | checkAndFillBuffer(calBytesNeeded(sizeof(float))); |
---|
791 | |
---|
792 | alignBufCur(sizeof(float)); |
---|
793 | *(float*)&f = *(float*)fBufCur; |
---|
794 | fBufCur += sizeof(float); |
---|
795 | return *this; |
---|
796 | } |
---|
797 | |
---|
798 | XSerializeEngine& XSerializeEngine::operator<<(double d) |
---|
799 | { |
---|
800 | checkAndFlushBuffer(calBytesNeeded(sizeof(double))); |
---|
801 | |
---|
802 | alignBufCur(sizeof(double)); |
---|
803 | *(double*)fBufCur = *(double*)&d; |
---|
804 | fBufCur += sizeof(double); |
---|
805 | return *this; |
---|
806 | } |
---|
807 | |
---|
808 | XSerializeEngine& XSerializeEngine::operator>>(double& d) |
---|
809 | { |
---|
810 | checkAndFillBuffer(calBytesNeeded(sizeof(double))); |
---|
811 | |
---|
812 | alignBufCur(sizeof(double)); |
---|
813 | *(double*)&d = *(double*)fBufCur; |
---|
814 | fBufCur += sizeof(double); |
---|
815 | return *this; |
---|
816 | } |
---|
817 | |
---|
818 | // --------------------------------------------------------------------------- |
---|
819 | // StorePool/LoadPool Opertions |
---|
820 | // --------------------------------------------------------------------------- |
---|
821 | XSerializeEngine::XSerializedObjectId_t |
---|
822 | XSerializeEngine::lookupStorePool(void* const objToLookup) const |
---|
823 | { |
---|
824 | //0 indicating object is not in the StorePool |
---|
825 | XSerializedObjectId* data = fStorePool->get(objToLookup); |
---|
826 | return (XSerializeEngine::XSerializedObjectId_t) (data ? data->getValue() : 0); |
---|
827 | |
---|
828 | } |
---|
829 | |
---|
830 | void XSerializeEngine::addStorePool(void* const objToAdd) |
---|
831 | { |
---|
832 | pumpCount(); |
---|
833 | fStorePool->put(objToAdd, new (fGrammarPool->getMemoryManager()) XSerializedObjectId(fObjectCount)); |
---|
834 | } |
---|
835 | |
---|
836 | XSerializable* XSerializeEngine::lookupLoadPool(XSerializedObjectId_t objectTag) const |
---|
837 | { |
---|
838 | |
---|
839 | /*** |
---|
840 | * an object tag read from the binary refering to |
---|
841 | * an object beyond the upper most boundary of the load pool |
---|
842 | ***/ |
---|
843 | |
---|
844 | if (objectTag > fLoadPool->size()) |
---|
845 | { |
---|
846 | XMLCh value1[64]; |
---|
847 | XMLCh value2[64]; |
---|
848 | XMLString::binToText(objectTag, value1, 65, 10, getMemoryManager()); |
---|
849 | XMLString::sizeToText(fLoadPool->size(), value2, 65, 10, getMemoryManager()); |
---|
850 | ThrowXMLwithMemMgr2(XSerializationException |
---|
851 | , XMLExcepts::XSer_LoadPool_UppBnd_Exceed |
---|
852 | , value1 |
---|
853 | , value2 |
---|
854 | , getMemoryManager()); |
---|
855 | } |
---|
856 | |
---|
857 | if (objectTag == 0) |
---|
858 | return 0; |
---|
859 | |
---|
860 | /*** |
---|
861 | * A non-null object tag starts from 1 while fLoadPool starts from 0 |
---|
862 | ***/ |
---|
863 | return (XSerializable*) fLoadPool->elementAt(objectTag - 1); |
---|
864 | } |
---|
865 | |
---|
866 | void XSerializeEngine::addLoadPool(void* const objToAdd) |
---|
867 | { |
---|
868 | |
---|
869 | TEST_THROW_ARG2( (fLoadPool->size() != fObjectCount) |
---|
870 | , fObjectCount |
---|
871 | , fLoadPool->size() |
---|
872 | , XMLExcepts::XSer_LoadPool_NoTally_ObjCnt |
---|
873 | ) |
---|
874 | |
---|
875 | pumpCount(); |
---|
876 | fLoadPool->addElement(objToAdd); |
---|
877 | |
---|
878 | } |
---|
879 | |
---|
880 | void XSerializeEngine::pumpCount() |
---|
881 | { |
---|
882 | if (fObjectCount >= fgMaxObjectCount) |
---|
883 | { |
---|
884 | XMLCh value1[64]; |
---|
885 | XMLCh value2[64]; |
---|
886 | XMLString::sizeToText(fObjectCount, value1, 65, 10, getMemoryManager()); |
---|
887 | XMLString::binToText(fgMaxObjectCount, value2, 65, 10, getMemoryManager()); |
---|
888 | ThrowXMLwithMemMgr2(XSerializationException |
---|
889 | , XMLExcepts::XSer_ObjCount_UppBnd_Exceed |
---|
890 | , value1 |
---|
891 | , value2 |
---|
892 | , getMemoryManager()); |
---|
893 | } |
---|
894 | |
---|
895 | fObjectCount++; |
---|
896 | |
---|
897 | } |
---|
898 | |
---|
899 | // --------------------------------------------------------------------------- |
---|
900 | // Buffer Opertions |
---|
901 | // --------------------------------------------------------------------------- |
---|
902 | /*** |
---|
903 | * |
---|
904 | * Though client may need only miniBytesNeeded, we always request |
---|
905 | * a full size reading from our inputStream. |
---|
906 | * |
---|
907 | * Whatever possibly left in the buffer is abandoned, such as in |
---|
908 | * the case of CheckAndFillBuffer() |
---|
909 | * |
---|
910 | ***/ |
---|
911 | void XSerializeEngine::fillBuffer() |
---|
912 | { |
---|
913 | ensureLoading(); |
---|
914 | ensureLoadBuffer(); |
---|
915 | |
---|
916 | resetBuffer(); |
---|
917 | |
---|
918 | XMLSize_t bytesRead = fInputStream->readBytes(fBufStart, fBufSize); |
---|
919 | |
---|
920 | /*** |
---|
921 | * InputStream MUST fill in the exact amount of bytes as requested |
---|
922 | * to do: combine the checking and create a new exception code later |
---|
923 | ***/ |
---|
924 | TEST_THROW_ARG2( (bytesRead < fBufSize) |
---|
925 | , bytesRead |
---|
926 | , fBufSize |
---|
927 | , XMLExcepts::XSer_InStream_Read_LT_Req |
---|
928 | ) |
---|
929 | |
---|
930 | TEST_THROW_ARG2( (bytesRead > fBufSize) |
---|
931 | , bytesRead |
---|
932 | , fBufSize |
---|
933 | , XMLExcepts::XSer_InStream_Read_OverFlow |
---|
934 | ) |
---|
935 | |
---|
936 | fBufLoadMax = fBufStart + fBufSize; |
---|
937 | fBufCur = fBufStart; |
---|
938 | |
---|
939 | ensureLoadBuffer(); |
---|
940 | |
---|
941 | fBufCount++; |
---|
942 | } |
---|
943 | |
---|
944 | /*** |
---|
945 | * |
---|
946 | * Flush out whatever left in the buffer, from |
---|
947 | * fBufStart to fBufEnd. |
---|
948 | * |
---|
949 | ***/ |
---|
950 | void XSerializeEngine::flushBuffer() |
---|
951 | { |
---|
952 | ensureStoring(); |
---|
953 | ensureStoreBuffer(); |
---|
954 | |
---|
955 | fOutputStream->writeBytes(fBufStart, fBufSize); |
---|
956 | fBufCur = fBufStart; |
---|
957 | |
---|
958 | resetBuffer(); |
---|
959 | ensureStoreBuffer(); |
---|
960 | |
---|
961 | fBufCount++; |
---|
962 | } |
---|
963 | |
---|
964 | inline void XSerializeEngine::checkAndFlushBuffer(XMLSize_t bytesNeedToWrite) |
---|
965 | { |
---|
966 | TEST_THROW_ARG1( (bytesNeedToWrite <= 0) |
---|
967 | , bytesNeedToWrite |
---|
968 | , XMLExcepts::XSer_Inv_checkFlushBuffer_Size |
---|
969 | ) |
---|
970 | |
---|
971 | // fBufStart ... fBufCur ...fBufEnd |
---|
972 | if ((fBufCur + bytesNeedToWrite) > fBufEnd) |
---|
973 | flushBuffer(); |
---|
974 | } |
---|
975 | |
---|
976 | inline void XSerializeEngine::checkAndFillBuffer(XMLSize_t bytesNeedToRead) |
---|
977 | { |
---|
978 | |
---|
979 | TEST_THROW_ARG1( (bytesNeedToRead <= 0) |
---|
980 | , bytesNeedToRead |
---|
981 | , XMLExcepts::XSer_Inv_checkFillBuffer_Size |
---|
982 | ) |
---|
983 | |
---|
984 | // fBufStart ... fBufCur ...fBufLoadMax |
---|
985 | if ((fBufCur + bytesNeedToRead) > fBufLoadMax) |
---|
986 | { |
---|
987 | fillBuffer(); |
---|
988 | } |
---|
989 | |
---|
990 | } |
---|
991 | |
---|
992 | inline void XSerializeEngine::ensureStoreBuffer() const |
---|
993 | { |
---|
994 | XMLSize_t a = (XMLSize_t) (fBufCur - fBufStart); |
---|
995 | XMLSize_t b = (XMLSize_t) (fBufEnd - fBufCur); |
---|
996 | |
---|
997 | TEST_THROW_ARG2 ( !((fBufStart <= fBufCur) && (fBufCur <= fBufEnd)) |
---|
998 | , a |
---|
999 | , b |
---|
1000 | , XMLExcepts::XSer_StoreBuffer_Violation |
---|
1001 | ) |
---|
1002 | |
---|
1003 | } |
---|
1004 | |
---|
1005 | inline void XSerializeEngine::ensureLoadBuffer() const |
---|
1006 | { |
---|
1007 | XMLSize_t a = (XMLSize_t) (fBufCur - fBufStart); |
---|
1008 | XMLSize_t b = (XMLSize_t) (fBufLoadMax - fBufCur); |
---|
1009 | |
---|
1010 | TEST_THROW_ARG2 ( !((fBufStart <= fBufCur) && (fBufCur <= fBufLoadMax)) |
---|
1011 | , a |
---|
1012 | , b |
---|
1013 | , XMLExcepts::XSer_LoadBuffer_Violation |
---|
1014 | ) |
---|
1015 | |
---|
1016 | } |
---|
1017 | |
---|
1018 | inline void XSerializeEngine::ensurePointer(void* const ptr) const |
---|
1019 | { |
---|
1020 | |
---|
1021 | TEST_THROW_ARG1( (ptr == 0) |
---|
1022 | , 0 |
---|
1023 | , XMLExcepts::XSer_Inv_Null_Pointer |
---|
1024 | ) |
---|
1025 | |
---|
1026 | } |
---|
1027 | |
---|
1028 | inline void XSerializeEngine::resetBuffer() |
---|
1029 | { |
---|
1030 | memset(fBufStart, 0, fBufSize * sizeof(XMLByte)); |
---|
1031 | } |
---|
1032 | |
---|
1033 | // --------------------------------------------------------------------------- |
---|
1034 | // Template object |
---|
1035 | // --------------------------------------------------------------------------- |
---|
1036 | /*** |
---|
1037 | * |
---|
1038 | * Search the store pool to see if the address has been seen before or not. |
---|
1039 | * |
---|
1040 | * If yes, write the corresponding object Tag to the internal buffer |
---|
1041 | * and return true. |
---|
1042 | * |
---|
1043 | * Otherwise, add the address to the store pool and return false |
---|
1044 | * to notifiy the client application code to store the template object. |
---|
1045 | * |
---|
1046 | ***/ |
---|
1047 | bool XSerializeEngine::needToStoreObject(void* const templateObjectToWrite) |
---|
1048 | { |
---|
1049 | ensureStoring(); //don't ensurePointer here !!! |
---|
1050 | |
---|
1051 | XSerializedObjectId_t objIndex = 0; |
---|
1052 | |
---|
1053 | if (!templateObjectToWrite) |
---|
1054 | { |
---|
1055 | *this << fgNullObjectTag; // null pointer |
---|
1056 | return false; |
---|
1057 | } |
---|
1058 | else if (0 != (objIndex = lookupStorePool(templateObjectToWrite))) |
---|
1059 | { |
---|
1060 | *this << objIndex; // write an object reference tag |
---|
1061 | return false; |
---|
1062 | } |
---|
1063 | else |
---|
1064 | { |
---|
1065 | *this << fgTemplateObjTag; // write fgTemplateObjTag to denote that actual |
---|
1066 | // template object follows |
---|
1067 | addStorePool(templateObjectToWrite); // put the address into StorePool |
---|
1068 | return true; |
---|
1069 | } |
---|
1070 | |
---|
1071 | } |
---|
1072 | |
---|
1073 | bool XSerializeEngine::needToLoadObject(void** templateObjectToRead) |
---|
1074 | { |
---|
1075 | ensureLoading(); |
---|
1076 | |
---|
1077 | XSerializedObjectId_t obTag; |
---|
1078 | |
---|
1079 | *this >> obTag; |
---|
1080 | |
---|
1081 | if (obTag == fgTemplateObjTag) |
---|
1082 | { |
---|
1083 | /*** |
---|
1084 | * what follows fgTemplateObjTag is the actual template object |
---|
1085 | * We need the client application to create a template object |
---|
1086 | * and register it through registerObject(), and deserialize |
---|
1087 | * template object |
---|
1088 | ***/ |
---|
1089 | return true; |
---|
1090 | } |
---|
1091 | else |
---|
1092 | { |
---|
1093 | /*** |
---|
1094 | * We hava a reference to an existing template object, get it. |
---|
1095 | */ |
---|
1096 | *templateObjectToRead = lookupLoadPool(obTag); |
---|
1097 | return false; |
---|
1098 | } |
---|
1099 | |
---|
1100 | } |
---|
1101 | |
---|
1102 | void XSerializeEngine::registerObject(void* const templateObjectToRegister) |
---|
1103 | { |
---|
1104 | ensureLoading(); |
---|
1105 | addLoadPool(templateObjectToRegister); |
---|
1106 | } |
---|
1107 | |
---|
1108 | XMLGrammarPool* XSerializeEngine::getGrammarPool() const |
---|
1109 | { |
---|
1110 | return fGrammarPool; |
---|
1111 | } |
---|
1112 | |
---|
1113 | XMLStringPool* XSerializeEngine::getStringPool() const |
---|
1114 | { |
---|
1115 | return fGrammarPool->getURIStringPool(); |
---|
1116 | } |
---|
1117 | |
---|
1118 | MemoryManager* XSerializeEngine::getMemoryManager() const |
---|
1119 | { |
---|
1120 | //todo: changed to return fGrammarPool->getMemoryManager() |
---|
1121 | return fGrammarPool ? fGrammarPool->getMemoryManager() : XMLPlatformUtils::fgMemoryManager; |
---|
1122 | } |
---|
1123 | |
---|
1124 | // |
---|
1125 | // Based on the current position (fBufCur), calculated the needed size |
---|
1126 | // to read/write |
---|
1127 | // |
---|
1128 | inline XMLSize_t XSerializeEngine::alignAdjust(XMLSize_t size) const |
---|
1129 | { |
---|
1130 | XMLSize_t remainder = (XMLSize_t) fBufCur % size; |
---|
1131 | return (remainder == 0) ? 0 : (size - remainder); |
---|
1132 | } |
---|
1133 | |
---|
1134 | // Adjust the fBufCur |
---|
1135 | inline void XSerializeEngine::alignBufCur(XMLSize_t size) |
---|
1136 | { |
---|
1137 | fBufCur+=alignAdjust(size); |
---|
1138 | assert(((XMLSize_t) fBufCur % size)==0); |
---|
1139 | } |
---|
1140 | |
---|
1141 | inline XMLSize_t XSerializeEngine::calBytesNeeded(XMLSize_t size) const |
---|
1142 | { |
---|
1143 | return (alignAdjust(size) + size); |
---|
1144 | } |
---|
1145 | |
---|
1146 | void XSerializeEngine::trace(char* /*funcName*/) const |
---|
1147 | { |
---|
1148 | return; |
---|
1149 | |
---|
1150 | /* |
---|
1151 | if (isStoring()) |
---|
1152 | printf("\n funcName=<%s>, storing, count=<%lu>, postion=<%lu>\n", funcName, fBufCount, getBufCurAccumulated()); |
---|
1153 | else |
---|
1154 | printf("\n funcName=<%s>, loading, count=<%lu>, postion=<%lu>\n", funcName, fBufCount, getBufCurAccumulated()); |
---|
1155 | */ |
---|
1156 | } |
---|
1157 | |
---|
1158 | XERCES_CPP_NAMESPACE_END |
---|