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1 /* |
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2 * Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Simple v2/v3 ASX-fileparser |
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15 * |
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16 */ |
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17 |
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18 // Version : %version: 10.1.5 % |
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19 |
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20 |
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21 |
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22 // INCLUDE FILES |
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23 #include <e32base.h> |
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24 #include <f32file.h> |
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25 #include <bautils.h> |
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26 #include <utf.h> |
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27 #include <asxparser.h> |
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28 |
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29 #include <xmlengdomimplementation.h> |
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30 #include <xmlengdomparser.h> |
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31 #include <xmlengdocument.h> |
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32 #include <xmlengelement.h> |
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33 #include <xmlengnodelist.h> |
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34 |
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35 #include "AsxParser_debug.h" |
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36 |
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37 // CONSTANTS |
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38 #define KMaxAsxFileSize 5192 |
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39 _LIT8( KNoSkip, "no" ); |
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40 |
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41 // ============================ MEMBER FUNCTIONS =============================== |
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42 |
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43 // ----------------------------------------------------------------------------- |
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44 // CAsxParser::NewL |
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45 // Two-phased constructor. |
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46 // ----------------------------------------------------------------------------- |
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47 EXPORT_C CAsxParser* CAsxParser::NewL( const TDesC& aFileName ) |
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48 { |
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49 ASX_DEBUG(_L("#MP# CAsxParser::NewL(%S)"), &aFileName); |
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50 |
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51 CAsxParser* self = new( ELeave ) CAsxParser(); |
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52 |
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53 CleanupStack::PushL( self ); |
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54 self->ConstructL( aFileName ); |
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55 CleanupStack::Pop( self ); |
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56 return self; |
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57 } |
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58 |
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59 // ----------------------------------------------------------------------------- |
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60 // CAsxParser::NewL |
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61 // Two-phased constructor. |
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62 // ----------------------------------------------------------------------------- |
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63 EXPORT_C CAsxParser* CAsxParser::NewL( RFile& aFile ) |
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64 { |
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65 ASX_DEBUG(_L("#MP# CAsxParser::NewL(aFile)")); |
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66 |
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67 CAsxParser* self = new( ELeave ) CAsxParser(); |
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68 |
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69 CleanupStack::PushL( self ); |
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70 self->ConstructL( aFile ); |
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71 CleanupStack::Pop( self ); |
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72 return self; |
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73 } |
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74 |
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75 // ----------------------------------------------------------------------------- |
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76 // CAsxParser::~CAsxParser() |
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77 // Destructor |
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78 // ----------------------------------------------------------------------------- |
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79 EXPORT_C CAsxParser::~CAsxParser() |
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80 { |
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81 ASX_DEBUG(_L("#MP# CAsxParser::~CAsxParser()")); |
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82 |
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83 for ( TInt i = 0 ; i < iAsxArray.Count() ; i++ ) |
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84 { |
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85 delete iAsxArray[i]->url; |
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86 } |
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87 |
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88 iAsxArray.ResetAndDestroy(); |
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89 } |
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90 |
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91 // ----------------------------------------------------------------------------- |
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92 // CAsxParser::CAsxParser |
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93 // C++ default constructor can NOT contain any code, that might leave. |
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94 // ----------------------------------------------------------------------------- |
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95 CAsxParser::CAsxParser() |
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96 { |
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97 ASX_DEBUG(_L("#MP# CAsxParser::CAsxParser()")); |
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98 } |
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99 |
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100 // ----------------------------------------------------------------------------- |
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101 // CAsxParser::ConstructL |
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102 // Symbian 2nd phase constructor can leave. |
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103 // ----------------------------------------------------------------------------- |
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104 void CAsxParser::ConstructL( const TDesC& aFileName ) |
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105 { |
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106 ASX_DEBUG(_L("#MP# CAsxParser::CAsxParser(%S)"), &aFileName); |
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107 |
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108 RFs rFs; |
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109 RFile asxFile; |
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110 |
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111 User::LeaveIfError( rFs.Connect() ); |
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112 CleanupClosePushL( rFs ); |
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113 |
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114 if ( ! BaflUtils::FileExists( rFs, aFileName ) ) |
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115 { |
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116 ASX_DEBUG(_L("#MP# CAsxParser::ConstructL() file not found")); |
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117 User::Leave( KErrNotFound ); |
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118 } |
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119 |
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120 User::LeaveIfError( asxFile.Open( rFs, aFileName, EFileShareAny ) ); |
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121 CleanupClosePushL( asxFile ); |
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122 HandleFileParsingL( asxFile ); |
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123 CleanupStack::PopAndDestroy( 2 ); // rFs, asxFile |
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124 |
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125 } |
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126 |
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127 |
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128 // ----------------------------------------------------------------------------- |
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129 // CAsxParser::ConstructL |
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130 // Symbian 2nd phase constructor can leave. |
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131 // ----------------------------------------------------------------------------- |
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132 void CAsxParser::ConstructL( RFile& aFile ) |
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133 { |
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134 ASX_DEBUG(_L("#MP# CAsxParser::ConstructL(aFile)")); |
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135 RFile asxFile; |
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136 |
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137 if( ! aFile.SubSessionHandle() ) |
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138 { |
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139 ASX_DEBUG(_L("#MP# CAsxParser::ConstructL(aFile) file handle not found")); |
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140 User::Leave( KErrNotFound ); |
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141 } |
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142 |
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143 User::LeaveIfError( asxFile.Duplicate( aFile ) ); |
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144 CleanupClosePushL( asxFile ); |
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145 HandleFileParsingL( asxFile ); |
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146 asxFile.Close(); |
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147 CleanupStack::PopAndDestroy( ); // asxFile |
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148 } |
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149 |
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150 // ----------------------------------------------------------------------------- |
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151 // CAsxParser::ParseAsxV2HeaderL |
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152 // ----------------------------------------------------------------------------- |
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153 void CAsxParser::ParseAsxV2HeaderL( TPtr8 aPtr ) |
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154 { |
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155 ASX_DEBUG(_L("#MP# CAsxParser::ParseAsxV2HeaderL()")); |
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156 |
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157 iVersion = 2; |
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158 TInt location = 0; |
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159 |
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160 // |
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161 // Find all RefX= string and the URLs |
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162 // |
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163 // v2 ASX file has simple Ref-strings for URLs, one URL per line |
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164 // File starts with [Reference] |
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165 // Example: |
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166 // [Reference] |
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167 // Ref1=http://server.com:8888/wm/file.wmv?MSWMExt=.asf |
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168 // Ref2=http://server2.com:8888/wm/file.wmv?MSWMExt=.asf |
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169 // |
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170 for ( TInt refNumber = 1 ; location >= 0 ; refNumber++ ) |
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171 { |
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172 HBufC8* refString = HBufC8::NewLC(10); |
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173 TPtr8 refPtr = refString->Des(); |
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174 |
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175 refPtr.Append(_L("Ref")); |
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176 refPtr.AppendNum(refNumber); |
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177 refPtr.Append(_L("=")); |
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178 |
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179 location = aPtr.FindF( refPtr ); |
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180 |
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181 if ( location != KErrNotFound ) |
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182 { |
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183 location += refPtr.Length(); |
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184 TPtrC8 mid = aPtr.Mid(location); |
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185 TInt length = mid.Locate(EKeyEnter); |
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186 |
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187 if ( length == KErrNotFound ) |
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188 { |
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189 length = mid.Length(); |
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190 } |
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191 |
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192 AsxStruct* asxItem = new( ELeave ) AsxStruct ; |
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193 CleanupStack::PushL( asxItem ); |
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194 |
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195 // default the seek to true |
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196 asxItem->seek = ETrue; |
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197 TPtrC8 urlStr = mid.Left(length); |
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198 asxItem->url = urlStr.AllocL(); |
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199 iAsxArray.Append(asxItem); |
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200 |
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201 CleanupStack::Pop(); // pop the asxItem |
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202 } |
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203 |
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204 CleanupStack::PopAndDestroy( refString ); |
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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 // CAsxParser::ParseAsxV3HeaderL |
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211 // ----------------------------------------------------------------------------- |
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212 void CAsxParser::ParseAsxV3HeaderL( TPtr8 aPtr ) |
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213 { |
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214 ASX_DEBUG(_L("#MP# CAsxParser::ParseAsxV3HeaderL()")); |
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215 |
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216 RXmlEngDOMImplementation DOM_impl; |
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217 DOM_impl.OpenL(); |
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218 |
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219 RXmlEngDOMParser parser; |
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220 TInt error = parser.Open( DOM_impl ); |
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221 |
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222 if (error == KErrNone) |
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223 { |
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224 RXmlEngDocument doc; |
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225 |
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226 // |
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227 // Parse the xml data stream |
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228 // |
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229 TRAPD( err, doc = parser.ParseL(aPtr) ); |
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230 |
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231 if ( ! err ) |
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232 { |
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233 iVersion = 3; |
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234 TXmlEngElement element; |
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235 TXmlEngNode node; |
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236 RXmlEngNodeList<TXmlEngElement> nodelist1; |
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237 RXmlEngNodeList<TXmlEngElement> nodelist2; |
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238 node = doc.DocumentElement(); |
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239 node.AsElement().GetChildElements(nodelist1); |
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240 |
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241 CleanupClosePushL(nodelist1); |
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242 CleanupClosePushL(nodelist2); |
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243 |
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244 _LIT8(KEntry,"ENTRY"); |
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245 _LIT8(KRef,"REF"); |
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246 _LIT8(KHRef,"HREF"); |
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247 _LIT8(KClientSkip,"CLIENTSKIP"); |
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248 |
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249 while ( nodelist1.HasNext() ) |
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250 { |
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251 element = nodelist1.Next(); |
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252 element.GetChildElements(nodelist2); |
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253 |
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254 // |
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255 // In v3 ASX file the streaming URLs are REF tags under |
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256 // ENTRY-element |
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257 // |
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258 // Search for all ENTRYs and REFs under them |
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259 // Example |
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260 // <ENTRY> |
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261 // <REF HREF = "rtsp://ServerName/Path/FileName.wmv" /> |
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262 // <BANNER HREF="http://ServerName/Path/Banner1.gif"> |
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263 // <MOREINFO HREF ="http://www.microsoft.com/windows/windowsmedia" /> |
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264 // <ABSTRACT>This is the description for this clip.</ABSTRACT> |
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265 // </BANNER> |
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266 // </ENTRY> |
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267 // |
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268 TPtrC8 name = element.Name(); |
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269 |
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270 if ( ! element.Name().CompareF(KEntry) ) |
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271 { |
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272 AsxStruct* asxItem = new( ELeave ) AsxStruct; |
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273 CleanupStack::PushL( asxItem ); |
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274 |
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275 // init to True |
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276 asxItem->seek = ETrue; |
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277 |
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278 TBool entryHasAttributes = element.HasAttributes(); |
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279 if ( entryHasAttributes ) |
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280 { |
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281 RXmlEngNodeList<TXmlEngAttr> attributeList; |
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282 element.GetAttributes(attributeList); |
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283 CleanupClosePushL(attributeList); |
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284 |
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285 while ( attributeList.HasNext() ) |
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286 { |
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287 TXmlEngAttr attr = attributeList.Next(); |
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288 |
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289 if ( ! attr.Name().CompareF(KClientSkip) ) |
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290 { |
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291 TPtrC8 attrData = attr.Value(); |
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292 |
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293 if ( ! attrData.CompareF(KNoSkip) ) |
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294 { |
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295 asxItem->seek = EFalse; |
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296 } |
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297 } |
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298 } |
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299 CleanupStack::PopAndDestroy(); //attributeList |
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300 } |
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301 |
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302 while( nodelist2.HasNext() ) |
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303 { |
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304 element = nodelist2.Next(); |
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305 |
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306 if ( ! element.IsNull() ) |
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307 { |
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308 TPtrC8 name = element.Name(); |
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309 |
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310 if ( ! element.Name().CompareF(KRef) ) |
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311 { |
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312 TBool hasAttributes = element.HasAttributes(); |
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313 |
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314 RXmlEngNodeList<TXmlEngAttr> attributeList; |
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315 |
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316 element.GetAttributes(attributeList); |
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317 |
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318 CleanupClosePushL(attributeList); |
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319 |
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320 while ( attributeList.HasNext() ) |
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321 { |
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322 TXmlEngAttr attr = attributeList.Next(); |
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323 |
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324 if ( ! attr.Name().CompareF(KHRef) ) |
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325 { |
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326 TPtrC8 attrData = attr.Value(); |
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327 asxItem->url = attrData.AllocL(); |
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328 iAsxArray.Append(asxItem); |
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329 } |
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330 } |
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331 |
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332 CleanupStack::PopAndDestroy(); //attributeList |
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333 } |
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334 } |
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335 } |
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336 CleanupStack::Pop(); // pop the asxItem |
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337 } |
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338 } |
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339 |
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340 CleanupStack::PopAndDestroy(); //nodelist2 |
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341 CleanupStack::PopAndDestroy(); //nodelist1 |
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342 } |
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343 |
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344 doc.Close(); |
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345 parser.Close(); |
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346 DOM_impl.Close(); |
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347 |
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348 } |
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349 } |
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350 |
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351 // ----------------------------------------------------------------------------- |
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352 // CAsxParser::GetUrl |
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353 // First URL at position 1 |
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354 // ----------------------------------------------------------------------------- |
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355 EXPORT_C TInt CAsxParser::GetUrl( const TUint aUrlIndex, TPtrC8& aUrl ) |
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356 { |
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357 ASX_DEBUG(_L("#MP# CAsxParser::GetUrl(%d)"), aUrlIndex); |
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358 |
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359 TInt retVal = KErrNone; |
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360 |
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361 if ( aUrlIndex - 1 > iAsxArray.Count() || iAsxArray.Count() == 0 ) |
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362 { |
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363 ASX_DEBUG(_L("#MP# CAsxParser::GetUrl() Bad index")); |
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364 retVal = KErrArgument; |
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365 } |
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366 else |
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367 { |
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368 aUrl.Set( (iAsxArray[aUrlIndex - 1]->url)->Des() ); |
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369 } |
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370 |
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371 return retVal; |
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372 } |
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373 |
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374 // ----------------------------------------------------------------------------- |
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375 // CAsxParser::GetUrl |
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376 // First URL at position 1 |
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377 // ----------------------------------------------------------------------------- |
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378 EXPORT_C AsxStruct* CAsxParser::GetUrl( const TUint aUrlIndex ) |
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379 { |
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380 ASX_DEBUG(_L("#MP# CAsxParser::GetUrl(%d)"), aUrlIndex); |
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381 |
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382 AsxStruct* retVal = NULL; |
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383 |
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384 if ( aUrlIndex <= iAsxArray.Count() ) |
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385 { |
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386 retVal = iAsxArray[aUrlIndex - 1]; |
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387 } |
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388 |
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389 return retVal; |
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390 } |
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391 |
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392 |
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393 // ----------------------------------------------------------------------------- |
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394 // CAsxParser::GetUrlCount |
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395 // ----------------------------------------------------------------------------- |
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396 EXPORT_C void CAsxParser::GetUrlCount( TUint &aHowManyUrls ) |
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397 { |
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398 aHowManyUrls = iAsxArray.Count(); |
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399 |
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400 ASX_DEBUG(_L("#MP# CAsxParser::GetUrlCount(%d)"), aHowManyUrls); |
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401 } |
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402 |
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403 // ----------------------------------------------------------------------------- |
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404 // CAsxParser::IsValid |
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405 // ----------------------------------------------------------------------------- |
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406 EXPORT_C TInt CAsxParser::FileVersion() |
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407 { |
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408 ASX_DEBUG(_L("#MP# CAsxParser::FileVersion(%d)"), iVersion); |
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409 |
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410 return iVersion; |
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411 } |
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412 |
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413 // ----------------------------------------------------------------------------- |
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414 // CAsxParser::HandleFileParsingL |
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415 // ----------------------------------------------------------------------------- |
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416 // |
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417 void CAsxParser::HandleFileParsingL( RFile& aFile ) |
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418 { |
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419 iVersion = KErrNotFound; |
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420 |
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421 TInt size; |
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422 User::LeaveIfError( aFile.Size( size ) ); |
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423 |
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424 if ( size > KMaxAsxFileSize ) |
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425 { |
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426 ASX_DEBUG(_L("#MP# CAsxParser::HandleFileParsingL() file size > max size")); |
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427 User::Leave( KErrNotSupported ); |
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428 } |
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429 |
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430 HBufC8* urlBuf = HBufC8::NewLC( size ); |
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431 TPtr8 ptr = urlBuf->Des(); |
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432 |
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433 // |
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434 // Read ASX-file to urlBuf |
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435 // |
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436 User::LeaveIfError( aFile.Read( ptr ) ); |
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437 |
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438 // |
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439 // V2 file will start with [Reference] |
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440 // |
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441 _LIT8(KAsxV2Start,"[Reference]"); |
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442 TInt location = ptr.FindF( KAsxV2Start ); |
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443 |
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444 if ( location == 0 ) |
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445 { |
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446 // |
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447 // Found V2 ASX file header |
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448 // |
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449 ParseAsxV2HeaderL( ptr ); |
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450 } |
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451 else |
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452 { |
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453 // |
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454 // Did not find V2 ASX file, V3 will start with <ASX |
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455 // |
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456 _LIT8(KAsxV3Start,"<ASX"); |
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457 TInt location = ptr.FindF( KAsxV3Start ); |
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458 |
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459 if ( location == 0 ) |
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460 { |
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461 ParseAsxV3HeaderL( ptr ); |
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462 } |
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463 else |
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464 { |
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465 ASX_DEBUG(_L("#MP# CAsxParser::HandleFileParsingL() ASX file not V2 or V3")); |
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466 User::Leave( KErrNotSupported ); |
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467 } |
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468 } |
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469 |
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470 CleanupStack::PopAndDestroy(); // urlBuf |
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471 } |
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472 |
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473 // ----------------------------------------------------------------------------- |
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474 // CAsxParser::PrintUrl |
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475 // First URL at position 1 |
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476 // ----------------------------------------------------------------------------- |
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477 EXPORT_C void CAsxParser::PrintUrl( TPtrC8& aUrl8, TPtr& aUrl ) |
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478 { |
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479 ASX_DEBUG(_L("#MP# CAsxParser::PrintUrl()")); |
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480 |
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481 if ( aUrl8.Length() ) |
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482 { |
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483 CnvUtfConverter::ConvertToUnicodeFromUtf8(aUrl, aUrl8); |
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484 ASX_DEBUG(_L("#MP# CAsxParser::PrintUrl(%S)"), &aUrl); |
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485 } |
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486 } |
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487 // EOF |