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1 // Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 #if !defined (__E32STD_H__) |
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17 #include <e32std.h> |
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18 #endif |
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19 |
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20 #if !defined (__MIUTATCH_H__) |
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21 #include "MIUTATCH.H" |
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22 #endif |
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23 |
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24 void TImAttachmentFile::Reset() |
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25 { |
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26 iWritingToFile = EFalse; |
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27 iSpaceOnCache = 0; |
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28 iPositionInCache = 0; |
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29 iDataLine.SetLength(0); |
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30 } |
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31 |
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32 EXPORT_C TImAttachmentFile::TImAttachmentFile(RFs& aFileSession) |
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33 : iFileSession(aFileSession) |
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34 { |
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35 Reset(); |
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36 } |
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37 EXPORT_C TImAttachmentFile::~TImAttachmentFile() |
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38 { |
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39 iFile.Close(); |
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40 } |
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41 |
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42 EXPORT_C TInt TImAttachmentFile::MakeDir (const TDesC& aDirPath) |
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43 { |
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44 // Create that directory |
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45 // Nb directory name must be terminated with '\\' character |
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46 return (iFileSession.MkDir(aDirPath)); |
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47 } |
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48 |
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49 EXPORT_C TInt TImAttachmentFile::OpenFile (const TDesC& aDirPath, const TDesC& aFileName) |
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50 |
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51 { |
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52 TInt err(AppendValidFile(aDirPath, aFileName, iFullFilePath)); |
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53 if (err!=KErrNone) |
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54 return err; |
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55 Reset(); |
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56 iWritingToFile = EFalse; |
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57 return (iFile.Open(iFileSession, iFullFilePath, EFileShareExclusive|EFileStream)); |
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58 } |
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59 |
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60 EXPORT_C TInt TImAttachmentFile::CreateFile (const TDesC& aDirPath, const TDesC& aFileName) |
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61 { |
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62 // Initialise buffer used to store attachment data, prior to writing to file |
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63 iDataLine.FillZ(); |
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64 Reset(); |
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65 |
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66 // Create a file for the attachment data |
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67 // If the file already exists in this path, generate a new file name |
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68 // with the path: "\aDirPath\aFileName(i)" where "i">0 |
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69 |
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70 TInt error=MakeDir(aDirPath); // make directory for the attachment |
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71 if (error!=KErrAlreadyExists && error!=KErrNone) |
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72 return error; |
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73 |
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74 error=AppendValidFile(aDirPath, aFileName, iFullFilePath); |
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75 if (error!=KErrNone) |
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76 return error; |
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77 |
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78 error=iFile.Create(iFileSession, iFullFilePath, EFileWrite|EFileShareExclusive|EFileStream); |
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79 |
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80 if (error==KErrNone) |
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81 { |
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82 iWritingToFile = ETrue; |
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83 return error; |
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84 } |
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85 if (error!=KErrAlreadyExists) |
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86 return error; |
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87 |
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88 TParsePtr filenamePPtr(iFullFilePath); |
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89 TFileName newFileName; |
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90 |
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91 TInt index=0; |
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92 do |
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93 { |
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94 TPtrC filename=filenamePPtr.Name(); |
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95 TPtrC extension=filenamePPtr.Ext(); |
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96 iFullFilePath.Format(KImcvAttachFormatStr,&filename,++index,&extension); |
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97 error=AppendValidFile(aDirPath, iFullFilePath, newFileName); |
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98 if (error!=KErrNone) |
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99 error=iFile.Create(iFileSession, newFileName, EFileWrite|EFileShareExclusive|EFileStream); |
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100 } |
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101 while (error==KErrAlreadyExists); |
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102 return error; |
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103 } |
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104 |
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105 EXPORT_C TInt TImAttachmentFile::ReadFile (TDes8& rBuffer,TInt aLength) |
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106 { |
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107 // Only read from file once in a while, put into an intermediate buffer. |
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108 // Pass out data from buffer. Copy aLength of data from iDataLine to rBuffer |
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109 |
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110 TInt err = 0; // Error returned by file read. |
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111 TInt bufLength = aLength; // Length yet to be copied. |
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112 |
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113 // Is there anything in the buffer? |
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114 TInt dataLineLength = iDataLine.Length(); |
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115 if (dataLineLength==0) |
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116 { |
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117 // Is length<buffer size? |
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118 if (bufLength<KDataLineBufferLength) |
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119 { |
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120 // Fill buffer |
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121 err = iFile.Read(iDataLine, KDataLineBufferLength); |
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122 dataLineLength = iDataLine.Length(); |
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123 |
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124 // Inititialise |
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125 iPositionInCache = 0; |
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126 iSpaceOnCache = dataLineLength; |
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127 |
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128 // Read 'length' bytes from the data |
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129 rBuffer = SelectFileData(bufLength, iSpaceOnCache); |
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130 bufLength = 0; |
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131 } |
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132 else |
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133 { |
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134 // Don't use intermediate buffer |
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135 // Read 'length' bytes from file to rBuffer |
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136 err = iFile.Read(rBuffer,bufLength); |
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137 bufLength = 0; |
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138 } |
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139 } |
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140 else |
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141 // Is 'length'<data available in buffer |
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142 if (bufLength<iSpaceOnCache) |
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143 { |
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144 rBuffer = SelectFileData(bufLength, dataLineLength); |
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145 bufLength = 0; |
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146 } |
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147 else |
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148 { |
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149 // Read length bytes from the buffer to rBuffer |
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150 rBuffer = SelectFileData(iSpaceOnCache, dataLineLength); |
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151 bufLength -= rBuffer.Length(); |
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152 |
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153 if (bufLength>0) |
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154 { |
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155 if (bufLength<KDataLineBufferLength) |
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156 { |
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157 // Fill buffer |
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158 err = iFile.Read(iDataLine, KDataLineBufferLength); |
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159 dataLineLength = iDataLine.Length(); |
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160 |
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161 // Inititialise |
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162 iPositionInCache = 0; |
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163 iSpaceOnCache = dataLineLength; |
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164 |
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165 // Read 'length' bytes from the data |
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166 rBuffer.Append(SelectFileData(bufLength, dataLineLength)); |
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167 } |
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168 else |
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169 { |
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170 // read in remaining data to the rBuffer |
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171 TInt bufiPositionInCache = aLength-bufLength; |
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172 rBuffer.SetLength(bufiPositionInCache+1); // need this because otherwise get a panic! |
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173 TPtr8 ptr(&rBuffer[bufiPositionInCache], bufLength); |
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174 err = iFile.Read(ptr); |
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175 TInt ptrLength = ptr.Length(); |
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176 rBuffer.SetLength(bufiPositionInCache+ptrLength); // set the original length |
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177 bufLength = 0; |
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178 } |
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179 } |
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180 } |
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181 return err; |
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182 } |
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183 |
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184 |
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185 TPtrC8 TImAttachmentFile::SelectFileData(TInt& aBufLen, TInt& aDataLen) |
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186 { |
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187 // Read length bytes from the buffer to rBuffer |
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188 TInt size = aBufLen<aDataLen ? aBufLen : aDataLen; |
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189 |
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190 TPtrC8 rBuf = iDataLine.Mid(iPositionInCache,size); |
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191 iPositionInCache += size; |
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192 iSpaceOnCache -= size; |
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193 return rBuf; |
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194 } |
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195 |
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196 |
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197 TInt TImAttachmentFile::ReadFile () |
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198 { |
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199 return iFile.Read(iDataLine); |
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200 } |
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201 |
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202 EXPORT_C void TImAttachmentFile::SetFileHandle(RFile& aFile,TImFileOpenMode aFileMode) |
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203 { |
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204 if(aFileMode == EImFileRead) |
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205 iWritingToFile = EFalse; |
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206 else if(aFileMode == EImFileWrite) |
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207 iWritingToFile = ETrue; |
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208 |
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209 iFile = aFile; |
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210 } |
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211 |
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212 EXPORT_C TInt TImAttachmentFile::WriteFile (const TDesC8& aBuffer) |
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213 { |
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214 // Write data from aBuffer to file using an intermediate buffer, iDataLine. |
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215 // This is to reduce the number of file writes. 'Large' files can be written |
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216 // directly to the file. |
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217 |
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218 TInt err(KErrNone); |
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219 |
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220 TInt atchDataSize = aBuffer.Length(); |
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221 TInt bufferSize = iDataLine.Length(); |
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222 TInt spaceOnBuffer = 0; |
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223 TInt bufPos = 0; |
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224 // Fill buffer |
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225 spaceOnBuffer = KDataLineBufferLength - bufferSize; |
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226 |
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227 // if incoming data is bigger than buffer |
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228 // we can write it directly to file if packing is not done earier |
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229 if (atchDataSize >= KDataLineBufferLength && spaceOnBuffer == KDataLineBufferLength) |
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230 { |
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231 err=iFile.Write(aBuffer.Mid(bufPos)); |
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232 atchDataSize=0; |
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233 return err; |
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234 } |
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235 |
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236 if (atchDataSize > spaceOnBuffer) |
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237 { |
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238 // The remaining size of the atch is greater than the buffer |
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239 // Append as much data from the atch than will fit in the buffer |
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240 iDataLine.Append(aBuffer.Mid(bufPos,spaceOnBuffer)); |
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241 |
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242 bufPos += spaceOnBuffer; |
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243 atchDataSize -= spaceOnBuffer; |
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244 |
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245 // Flush buffer to file |
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246 err = WriteFile(); |
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247 iDataLine.SetLength(0); |
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248 bufferSize = 0; |
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249 |
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250 // if the size of the attachment is 'large' then write the whole file |
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251 if (atchDataSize >= KDataLineBufferLength) |
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252 { |
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253 err=iFile.Write(aBuffer.Mid(bufPos)); |
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254 atchDataSize=0; |
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255 } |
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256 else |
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257 { |
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258 iDataLine.Append(aBuffer.Mid(bufPos,atchDataSize)); |
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259 bufPos += atchDataSize; |
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260 atchDataSize -= atchDataSize; // atchDataSize should be 0! |
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261 } |
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262 } |
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263 else |
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264 { |
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265 iDataLine.Append(aBuffer.Mid(bufPos,atchDataSize)); |
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266 bufPos += atchDataSize; |
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267 atchDataSize -= atchDataSize; // atchDataSize should be 0! |
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268 } |
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269 |
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270 return err; |
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271 } |
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272 |
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273 EXPORT_C TInt TImAttachmentFile::WriteFile (const TDesC16& aBuffer) |
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274 { |
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275 // Write data from aBuffer to file using an intermediate buffer, iDataLine. |
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276 // This is to reduce the number of file writes. 'Large' files can be written |
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277 // directly to the file. |
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278 |
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279 iFileText.Set(iFile); |
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280 TInt err (KErrNone); |
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281 |
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282 TInt atchDataSize = aBuffer.Length(); |
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283 TInt bufferSize = iDataLine.Length(); |
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284 TInt spaceOnBuffer = 0; |
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285 TInt bufPos = 0; |
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286 // Fill buffer |
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287 spaceOnBuffer = KDataLineBufferLength - bufferSize; |
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288 |
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289 // if incoming data is bigger than buffer |
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290 // we can write it directly to file if packing is not done earier |
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291 if (atchDataSize >= KDataLineBufferLength && spaceOnBuffer == KDataLineBufferLength) |
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292 { |
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293 err=iFileText.Write(aBuffer.Mid(bufPos)); |
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294 atchDataSize=0; |
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295 return err; |
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296 } |
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297 |
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298 if (atchDataSize > spaceOnBuffer) |
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299 { |
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300 // The remaining size of the atch is greater than the buffer |
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301 // Append as much data from the atch than will fit in the buffer |
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302 iDataLine.Append(aBuffer.Mid(bufPos,spaceOnBuffer)); |
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303 |
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304 bufPos += spaceOnBuffer; |
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305 atchDataSize -= spaceOnBuffer; |
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306 |
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307 // Flush buffer to file |
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308 err = WriteFile(); |
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309 iDataLine.SetLength(0); |
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310 bufferSize = 0; |
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311 |
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312 // if the size of the attachment is 'large' then write the whole file |
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313 if (atchDataSize >= KDataLineBufferLength) |
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314 { |
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315 err=iFileText.Write(aBuffer.Mid(bufPos)); |
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316 atchDataSize=0; |
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317 } |
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318 else |
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319 { |
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320 iDataLine.Append(aBuffer.Mid(bufPos,atchDataSize)); |
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321 bufPos += atchDataSize; |
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322 atchDataSize -= atchDataSize; // atchDataSize should be 0! |
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323 } |
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324 } |
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325 else |
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326 { |
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327 iDataLine.Append(aBuffer.Mid(bufPos,atchDataSize)); |
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328 bufPos += atchDataSize; |
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329 atchDataSize -= atchDataSize; // atchDataSize should be 0! |
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330 } |
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331 |
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332 return err; |
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333 } |
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334 |
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335 |
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336 TInt TImAttachmentFile::WriteFile () |
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337 { |
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338 return iFile.Write(iDataLine); |
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339 } |
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340 |
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341 EXPORT_C TInt TImAttachmentFile::CloseFile() |
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342 { |
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343 // Check if writing to a file, in which case make sure iDataLine buffer.. |
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344 // has been flushed. |
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345 TInt err = KErrNone; |
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346 if (iWritingToFile) |
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347 err = FlushFile(); |
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348 Reset(); |
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349 iFile.Close(); |
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350 return err; |
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351 } |
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352 |
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353 TInt TImAttachmentFile::FlushFile() |
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354 { |
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355 if (iDataLine.Length() > 0) |
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356 { |
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357 WriteFile(); |
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358 } |
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359 return iFile.Flush(); |
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360 } |
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361 |
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362 EXPORT_C TInt TImAttachmentFile::DeleteAttachment(const TDesC& aDirPath, const TDesC& aFileName) |
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363 { |
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364 TInt err(AppendValidFile(aDirPath, aFileName, iFullFilePath)); |
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365 if (err!=KErrNone) |
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366 return err; |
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367 return (iFileSession.Delete(iFullFilePath)); |
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368 } |
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369 |
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370 TInt TImAttachmentFile::AppendValidFile(const TDesC& aDirPath, const TDesC& aFileName, TFileName& rFullFilePath) |
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371 { |
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372 // if the resultant filename is too long, report it, |
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373 // trimming the filename is not an option, apparently. |
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374 |
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375 rFullFilePath=aDirPath; |
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376 if (aDirPath.Length() + aFileName.Length() > KMaxFileName) |
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377 { |
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378 return KErrBadName; |
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379 } |
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380 else |
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381 { |
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382 rFullFilePath.Append(aFileName); |
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383 } |
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384 return KErrNone; |
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385 } |
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386 |