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1 // Copyright (c) 1996-2009 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 the License "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 // f32\sfsrv\cl_find.cpp |
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15 // |
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16 // |
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17 |
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18 #include "cl_std.h" |
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19 |
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20 #define gPathDelimiter TChar(';') |
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21 enum TMode {EFindByDrives,EFindByDrivesInPath,EFindByPath}; |
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22 |
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23 TInt TFindFile::DoFindInDir() |
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24 // |
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25 // Look for aFileName in aDir |
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26 // |
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27 { |
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28 |
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29 if (iDir==NULL) |
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30 { |
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31 TEntry entry; |
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32 TInt r=iFs->Entry(iFile.FullName(),entry); |
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33 if (r==KErrNone /*|| r==KErrAccessDenied*/) |
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34 return(KErrNone); |
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35 else if (r==KErrNoMemory) |
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36 return r; |
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37 else if (r==KErrPermissionDenied) |
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38 return (KErrPermissionDenied); |
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39 else |
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40 return(KErrNotFound); |
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41 } |
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42 TInt r=iFs->GetDir(iFile.FullName(),KEntryAttMaskSupported|KEntryAttAllowUid,ESortByName,*iDir); |
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43 if (r==KErrNoMemory) |
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44 return r; |
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45 else if (r==KErrPermissionDenied) |
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46 return r; |
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47 else if (r!=KErrNone) |
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48 return(KErrNotFound); |
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49 if ((*iDir)->Count()==0) |
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50 { |
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51 delete (*iDir); |
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52 *iDir=NULL; |
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53 return(KErrNotFound); |
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54 } |
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55 else |
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56 return(KErrNone); |
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57 } |
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58 |
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59 TInt TFindFile::DoFindNextInPath() |
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60 // |
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61 // Look for aFileName along the path and increment aPathPos |
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62 // |
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63 { |
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64 |
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65 if (iMode==EFindByDrivesInPath) |
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66 { |
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67 TInt r=DoFindNextInDriveList(); |
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68 if (r==KErrNone) |
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69 return(KErrNone); |
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70 if (r!=KErrNotFound) |
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71 return(r); |
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72 iMode=EFindByPath; |
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73 } |
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74 FOREVER |
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75 { |
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76 if (iPath->Length()<iPathPos) |
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77 return(KErrNotFound); |
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78 TPtrC path(iPath->Ptr()+iPathPos,iPath->Length()-iPathPos); |
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79 TInt r=path.Locate(gPathDelimiter); |
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80 if (r==KErrNotFound) |
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81 r=path.Length(); |
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82 path.Set(path.Ptr(),r); |
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83 iPathPos+=r+1; |
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84 TFileName fileName=iFile.NameAndExt(); |
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85 iFile.Set(fileName,&path,NULL); |
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86 if (iFile.FullName().Length()>=2 && iFile.FullName()[1]==KDriveDelimiter) |
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87 { |
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88 TInt r=DoFindInDir(); |
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89 if (r==KErrNone) |
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90 return(KErrNone); |
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91 if (r!=KErrNotFound) |
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92 return(r); |
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93 continue; |
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94 } |
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95 iMode=EFindByDrivesInPath; |
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96 |
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97 r=FindByDir(fileName,path); |
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98 if (r==KErrNone) |
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99 return(KErrNone); |
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100 if (r!=KErrNotFound) |
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101 return(r); |
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102 } |
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103 |
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104 } |
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105 |
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106 TInt TFindFile::DoFindNextInDriveList() |
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107 // |
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108 // Look for aFileName in all available drives in order |
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109 // |
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110 { |
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111 |
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112 TInt found; |
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113 TDriveInfo driveInfo; |
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114 const TUint matchedFlags= iMatchMask & KDriveAttMatchedFlags; //KDriveAttMatchedFlags = 0xFFF |
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115 const TUint matchedAtt = iMatchMask & KDriveAttMatchedAtt; //KDriveAttMatchedAtt = 0x0FFF0000 |
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116 |
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117 if (iMatchMask == (KDriveAttExclude | KDriveAttMatchedFlags ) ) //If all drives are excluded. |
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118 return KErrNotFound; |
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119 |
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120 FOREVER |
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121 { |
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122 |
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123 found =0; |
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124 TInt currentDrive=iCurrentDrive; |
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125 |
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126 |
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127 if (iCurrentDrive==-1) |
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128 currentDrive=EDriveZ; |
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129 |
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130 |
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131 if (currentDrive<=-2) |
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132 return(KErrNotFound); |
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133 |
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134 |
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135 iCurrentDrive--; |
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136 |
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137 if (!iDrvList[currentDrive]) |
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138 continue; |
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139 |
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140 TInt err = iFs->Drive(driveInfo,currentDrive); |
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141 |
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142 if(iMatchMask == 0) |
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143 { |
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144 if (iDrvList[currentDrive] & KDriveAttRemote) |
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145 continue; // NOT allowed on REMOTE DRIVE |
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146 if ((iDrvList[currentDrive] & (KDriveAttLocal|KDriveAttRom))==0) |
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147 continue; |
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148 } |
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149 else |
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150 { |
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151 |
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152 if(matchedFlags != 0 ) |
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153 { |
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154 |
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155 switch(matchedAtt) |
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156 { //found ==0 means that this drive attributes didn't match the flags |
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157 |
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158 case KDriveAttExclude : |
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159 found = (driveInfo.iDriveAtt & matchedFlags ) ? 0:iDrvList[currentDrive] ; |
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160 break; |
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161 |
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162 case 0: |
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163 found = (driveInfo.iDriveAtt & matchedFlags) ? iDrvList[currentDrive]:0 ; |
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164 break; |
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165 |
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166 |
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167 case KDriveAttExclusive : |
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168 if(matchedFlags != KDriveAttLogicallyRemovable) |
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169 { |
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170 |
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171 found = ((TUint8)(driveInfo.iDriveAtt) == matchedFlags) ?iDrvList[currentDrive]:0; |
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172 |
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173 } |
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174 else |
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175 { |
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176 found = (driveInfo.iDriveAtt == (matchedFlags | KDriveAttRemovable) ) ?iDrvList[currentDrive]:0; |
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177 } |
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178 |
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179 break; |
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180 |
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181 case KDriveAttExclude | KDriveAttExclusive: |
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182 if(matchedFlags != KDriveAttLogicallyRemovable) |
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183 { |
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184 |
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185 found = ((TUint8)(driveInfo.iDriveAtt) == matchedFlags) ?0:iDrvList[currentDrive]; |
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186 |
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187 } |
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188 else |
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189 { |
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190 found = (driveInfo.iDriveAtt == (matchedFlags | KDriveAttRemovable)) ?0:iDrvList[currentDrive]; |
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191 } |
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192 |
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193 break; |
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194 |
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195 default: |
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196 Panic(EFindFileIllegalAttribute); |
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197 |
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198 } |
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199 } |
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200 |
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201 else //matchedFlags == 0. |
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202 { |
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203 |
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204 if (matchedAtt== KDriveAttAll) |
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205 found= iDrvList[currentDrive]; |
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206 else |
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207 Panic(EFindFileIllegalAttribute); |
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208 |
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209 } |
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210 |
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211 |
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212 |
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213 if( found == 0) |
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214 continue; |
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215 |
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216 } |
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217 |
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218 // Don't scan a locked drive |
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219 |
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220 if( err == KErrNone) |
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221 { |
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222 if(driveInfo.iMediaAtt & KMediaAttLocked) |
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223 continue; |
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224 } |
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225 |
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226 |
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227 TParse fileName; |
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228 TChar driveLetter; |
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229 RFs::DriveToChar(currentDrive,driveLetter); |
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230 TBuf<4> drive; |
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231 drive.SetLength(2); |
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232 drive[0]=(TText)driveLetter; |
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233 drive[1]=':'; |
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234 TPtrC nameAndExt(iFile.NameAndExt()); |
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235 TPtrC path(iFile.Path()); |
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236 fileName.Set(nameAndExt,&path,&drive); |
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237 iFile=fileName; |
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238 TInt r=DoFindInDir(); |
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239 if (r==KErrNone) |
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240 return(KErrNone); |
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241 if (r!=KErrNotFound) |
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242 return(r); |
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243 } |
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244 } |
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245 |
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246 |
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247 |
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248 |
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249 EXPORT_C TFindFile::TFindFile(RFs& aFs) |
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250 : iFs(&aFs), iPathPos(0), iCurrentDrive(0), iMode(-1), iMatchMask(0) |
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251 /** |
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252 Constructor taking a file server session. |
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253 |
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254 @param aFs File server session. |
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255 */ |
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256 { |
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257 |
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258 iFile.Set(_L(""),NULL,NULL); |
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259 } |
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260 |
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261 |
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262 |
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263 |
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264 TInt TFindFile::DoFindByPath(const TDesC& aFileName,const TDesC* aPath) |
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265 // |
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266 // Look for a file in each directory in the path |
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267 // Make initial check for aFileName in the current directory |
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268 // |
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269 { |
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270 |
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271 if (aFileName.Length() <= 0) |
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272 return(KErrArgument); |
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273 |
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274 TInt r=iFile.Set(aFileName,NULL,NULL); |
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275 if (r!=KErrNone) |
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276 return(r); |
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277 iPath=aPath; |
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278 iPathPos=0; |
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279 iMode=EFindByPath; |
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280 r=DoFindInDir(); |
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281 |
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282 |
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283 if (r==KErrNone) |
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284 return(KErrNone); |
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285 if (r!=KErrNotFound) |
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286 return(r); |
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287 if ((iPath==NULL) || (iPath->Length()==0)) |
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288 return(KErrNotFound); |
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289 |
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290 |
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291 r=DoFindNextInPath(); |
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292 return(r); |
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293 } |
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294 |
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295 TInt TFindFile::DoFindByDir(const TDesC& aFileName,const TDesC& aDir) |
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296 // |
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297 // Look for aFileName in aDir on each connected drive |
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298 // Make initial check for aFileName in aDir on current drive |
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299 // |
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300 { |
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301 |
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302 if (aFileName.Length() <= 0) |
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303 return(KErrArgument); |
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304 |
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305 TInt r=iFs->Parse(aFileName,aDir,iFile); |
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306 if (r!=KErrNone) |
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307 return(r); |
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308 TInt searchResult=DoFindInDir(); |
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309 if(searchResult==KErrNoMemory) |
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310 return(searchResult); |
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311 |
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312 if(searchResult==KErrPermissionDenied) |
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313 return (KErrPermissionDenied); |
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314 |
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315 r=iFs->DriveList(iDrvList,KDriveAttAll); |
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316 if (r!=KErrNone) |
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317 return(r); |
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318 TInt drive; |
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319 r=RFs::CharToDrive(iFile.Drive()[0],drive); |
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320 if (r!=KErrNone) |
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321 return(r); |
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322 iDrvList[drive]=0; // Drive 'drive' has already been searched |
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323 iCurrentDrive=EDriveY; |
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324 iMode=EFindByDrives; |
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325 if (searchResult==KErrNone) |
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326 return(KErrNone); |
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327 |
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328 |
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329 return(DoFindNextInDriveList()); |
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330 } |
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331 |
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332 |
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333 |
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334 |
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335 EXPORT_C TInt TFindFile::FindByPath(const TDesC& aFileName,const TDesC* aPath) |
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336 /** |
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337 Searches for a file/directory in one or more directories in the path. |
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338 |
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339 The search ends when the file/directory is found, or when every directory |
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340 specified in the path list has been unsuccessfully searched. |
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341 |
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342 Notes: |
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343 |
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344 1. For the equivalent search using wildcards, use FindWildByPath(). |
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345 |
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346 2. After a file has been found, use TFindFile::File() to get the fully qualified path of the file. To |
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347 search for the next occurrence, use TFindFile::Find(). |
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348 |
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349 @param aFileName The filename to search for. If this specifies a directory as well |
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350 as a filename, then that directory is searched first. |
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351 @param aPath A list of directories to be searched. Paths in this list must |
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352 be separated by a semicolon character, but a semicolon is not |
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353 required after the final path. The directories are searched in |
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354 the order in which they occur in the list. If a path in |
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355 the list contains a drive letter, that drive alone is searched. |
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356 If a path contains no drive letter, the function searches for |
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357 the file in that directory on every available drive in turn, |
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358 beginning with drive Y:, in descending alphabetical order |
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359 and ending with drive Z:.When path is empty then session path |
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360 will be used for the search. |
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361 |
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362 @return KErrNone, if the filename was found; |
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363 KErrNotFound, if the filename was not found. |
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364 KErrArgument, if the filename is empty. |
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365 |
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366 @see TFindFile::FindWildByPath |
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367 @see TFindFile::File |
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368 @see TFindFile::Find |
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369 */ |
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370 { |
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371 |
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372 iDir=NULL; |
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373 return(DoFindByPath(aFileName,aPath)); |
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374 } |
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375 |
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376 |
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377 |
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378 |
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379 EXPORT_C TInt TFindFile::FindByDir(const TDesC& aFileName,const TDesC& aDir) |
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380 /** |
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381 Searches for a file/directory in a directory on all available drives. |
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382 |
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383 The search ends when the file/directory is found, or when every available |
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384 drive has been unsuccessfully searched. |
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385 |
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386 Notes: |
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387 |
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388 1. A drive letter may be specified in aDirPath. |
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389 If a drive is specified, then that drive is searched first. If no drive is |
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390 specified, then the drive specified in the session path is searched first. |
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391 The remaining available drives are then searched in descending alphabetical |
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392 order, from Y: to A:, and ending with the Z: drive. Using function SetFindMask |
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393 it is possible to specify a combination of attributes that the drives to be |
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394 searched must match. |
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395 |
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396 |
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397 2. For the corresponding search using wildcards, use FindWildByDir(). |
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398 |
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399 3. After a file has been found, use TFindFile::File() to get the fully |
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400 qualified path and filename. To search for the next occurrence, |
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401 use TFindFile::Find(). |
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402 |
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403 @param aFileName The filename to search for. If a path is specified, it |
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404 overrides the path specified in aDir. If no path is specified, |
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405 the path contained in aDir is used. |
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406 @param aDir A single path indicating a directory to be searched on each |
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407 drive.When path is empty then session path will be used for the search. |
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408 |
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409 @return KErrNone, if the file was found, otherwise one of the system-wide error codes, including: |
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410 KErrNotFound, if the file was not found; |
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411 KErrPermissionDenied, if the client does not have appropriate capabilities for the directory to be searched; |
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412 KErrArgument, if the filename is empty. |
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413 |
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414 @see TFindFile::FindWildByDir() |
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415 @see TFindFile::File() |
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416 @see TFindFile::Find() |
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417 @see TFindFile::SetFindMask() |
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418 */ |
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419 { |
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420 |
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421 iDir=NULL; |
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422 return(DoFindByDir(aFileName,aDir)); |
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423 } |
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424 |
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425 |
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426 |
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427 |
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428 EXPORT_C TInt TFindFile::FindWildByPath(const TDesC& aFileName,const TDesC* aPath,CDir*& aDir) |
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429 /** |
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430 Searches for one or more files/directories in the directories contained in a |
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431 path list. |
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432 |
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433 Wildcard characters can be specified. The search ends when one or more |
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434 filenames matching aFileName is found, or when every |
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435 directory in the path list has been unsuccessfully searched. |
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436 To begin searching again after a successful match has been made, |
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437 use FindWild(). |
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438 |
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439 Using function SetFindMask it is possible to specify a combination of |
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440 attributes that the drives to be searched must match. |
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441 |
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442 Notes: |
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443 |
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444 1. The caller of the function is responsible for deleting |
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445 aDir after the function has returned. |
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446 |
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447 2. Calling TFindFile::File() after a successful search gets the drive letter |
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448 and directory containing the file(s). The filenames can be retrieved via |
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449 the array of TEntry::iName objects contained in aDir. If you want to |
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450 retrieve the fully qualified path of a file, you need to parse the path and |
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451 the filename. |
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452 |
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453 @param aFileName The filename to search for. May contain wildcards. If |
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454 it specifies a directory as well as a filename, then that |
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455 directory is searched first. |
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456 @param aPath List of directories to search. Paths in this list must be |
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457 separated by a semicolon character, but a semicolon is not |
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458 required after the final path. The directories are searched |
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459 in the order in which they occur in the list. |
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460 Directories must be fully qualified, including |
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461 a drive letter, and the name must end with a backslash. |
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462 @param aDir On return, contains the entries for all files matching |
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463 aFileName in the first directory in which a match occurred. |
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464 |
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465 @return KErrNone, if one or more matching files was found; |
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466 KErrNotFound, if no matching file was found in any of the directories. |
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467 KErrArgument, if the filename is empty. |
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468 |
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469 @see TFindFile::FindWild |
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470 @see TFindFile::File |
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471 @see TEntry::iName |
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472 @see TFindFile::SetFindMask() |
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473 */ |
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474 { |
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475 |
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476 iDir=&aDir; |
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477 return(DoFindByPath(aFileName,aPath)); |
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478 } |
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479 |
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480 |
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481 |
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482 |
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483 EXPORT_C TInt TFindFile::FindWildByDir(const TDesC& aFileName,const TDesC& aDirPath,CDir*& aDir) |
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484 /** |
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485 Searches, using wildcards, for one or more files/directories in a specified |
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486 directory. |
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487 |
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488 If no matching file is found in that directory, all available drives are |
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489 searched in descending alphabetical order, from Y: to A:, and ending |
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490 with the Z: drive.Using function SetFindMask it is possible to specify a |
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491 combination of attributes that the drives to be searched must match. |
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492 |
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493 The search ends when one or more matching filenames are found, or when every |
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494 available drive has been unsuccessfully searched. To begin searching again |
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495 after a successful match has been made, use FindWild(). Wildcards may be |
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496 specified in the filename. |
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497 |
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498 Notes: |
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499 |
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500 1. A drive letter may be specified in aDirPath (or in aFileName). If a drive |
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501 is specified, that drive is searched first, followed by the other available |
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502 drives, in descending alphabetical order. If no drive is specified, the drive |
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503 contained in the session path is searched first. |
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504 |
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505 2. The function sets aDir to NULL, then allocates memory for it before appending |
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506 entries to the list. Therefore, aDir should have no memory allocated to it |
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507 before this function is called, otherwise this memory will become orphaned. |
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508 |
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509 3. The caller of this function is responsible for deleting aDir after the function |
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510 has returned. |
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511 |
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512 4. Calling TFindFile::File() after a successful search returns the drive letter |
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513 and directory containing the file(s). Filenames may be retrieved via the array |
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514 of TEntry::iNames contained in aDir. If you want to retrieve the fully |
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515 qualified path of a file, you will need to parse the path and the filename. |
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516 |
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517 @param aFileName The filename to search for. May contain wildcards. If a path |
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518 is specified, it overrides the path specified in aDirPath. |
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519 If no path is specified, the path contained in aDirPath is |
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520 used in the search. |
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521 @param aDirPath Path indicating a directory to search on each drive. |
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522 @param aDir On return, contains the entries for all files |
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523 matching aFileName. |
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524 |
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525 @return KErrNone if one or more matching files was found; |
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526 KErrNotFound if no matching file was found in the directory on any |
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527 of the drives. |
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528 KErrArgument, if the filename is empty. |
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529 |
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530 @see TFindFile::FindWild |
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531 @see TFindFile::File |
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532 @see TFindFile::SetFindMask() |
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533 */ |
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534 { |
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535 |
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536 iDir=&aDir; |
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537 return(DoFindByDir(aFileName,aDirPath)); |
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538 } |
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539 |
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540 |
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541 |
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542 |
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543 TInt TFindFile::DoFind() |
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544 // |
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545 // Find the next match |
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546 // |
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547 { |
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548 |
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549 TInt ret=KErrNone; |
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550 switch(iMode) |
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551 { |
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552 case EFindByDrives: |
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553 ret=DoFindNextInDriveList(); |
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554 break; |
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555 case EFindByPath: |
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556 case EFindByDrivesInPath: |
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557 ret=DoFindNextInPath(); |
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558 break; |
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559 default: |
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560 Panic(EFindFileIllegalMode); |
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561 } |
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562 return(ret); |
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563 } |
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564 |
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565 |
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566 |
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567 |
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568 EXPORT_C TInt TFindFile::Find() |
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569 /** |
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570 Searches for the next file/directory. |
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571 |
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572 This should be used after a successful call to FindByPath() or FindByDir(), |
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573 to find the next occurrence of the filename in the path or drive list. |
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574 |
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575 Using function SetFindMask it is possible to specify a combination of |
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576 attributes that the drives to be searched must match. |
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577 |
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578 Note: |
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579 |
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580 1. After a file/directory has been found, use TFindFile::File() to get the |
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581 fully qualified path and filename. |
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582 |
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583 @return KErrNone, if another occurrence of the file was found; |
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584 KErrNotFound, if no more occurrences were found. |
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585 |
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586 @see TFindFile::FindByPath |
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587 @see TFindFile::FindByDir |
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588 @see TFindFile::File |
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589 @see TFindFile::SetFindMask() |
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590 |
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591 */ |
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592 { |
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593 |
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594 // iDir=NULL; |
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595 return(DoFind()); |
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596 } |
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597 |
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598 |
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599 |
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600 |
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601 EXPORT_C TInt TFindFile::FindWild(CDir*& aDir) |
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602 /** |
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603 Searches for the next file/directory. |
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604 |
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605 This should be used after a successful call to FindWildByPath() |
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606 or FindWildByDir(), for the next occurrences of the filename in the |
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607 path or drive list.Using function SetFindMask it is possible to specify a |
|
608 combination of attributes that the drives to be searched must match. |
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609 |
|
610 Notes: |
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611 |
|
612 1. The caller of this function is responsible for deleting aDir after |
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613 the function has returned |
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614 |
|
615 2. Calling TFindFile::File() after a successful search, will return |
|
616 the drive letter and the directory containing the file(s). |
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617 The filenames may be retrieved via the array of TEntry::iName objects |
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618 contained in aDir. If you want to retrieve the fully qualified |
|
619 path of a file, you will need to parse the path and the filename using |
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620 the TParse class or derived classes. |
|
621 |
|
622 @param aDir On return, contains the entries for all matching files found in |
|
623 the next directory. |
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624 |
|
625 @return KErrNone, if further occurrences were found; |
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626 KErrNotFound, if no more matching files were found. |
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627 |
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628 |
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629 @see TParse |
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630 @see TEntry::iName |
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631 @see TFindFile::File |
|
632 @see TFindFile::FindWildByPath |
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633 @see TFindFile::FindWildByDir |
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634 @see TFindFile::SetFindMask() |
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635 */ |
|
636 { |
|
637 |
|
638 iDir=&aDir; |
|
639 return(DoFind()); |
|
640 } |
|
641 |
|
642 |
|
643 |
|
644 EXPORT_C TInt TFindFile::SetFindMask(TUint aMask) |
|
645 /** |
|
646 Can be used in order to specify a combination of drive attributes that the drives |
|
647 to be searched must match. When searching without specifying a mask, all drives, except the |
|
648 remote ones will be returned. |
|
649 |
|
650 @param aMask The combination of drive attributes that we want the drives to match. |
|
651 |
|
652 @return KErrNone, if the mask supplied is correct. |
|
653 KErrArgument, if the mask supplied is invalid. |
|
654 */ |
|
655 |
|
656 { |
|
657 TInt r =ValidateMatchMask(aMask); |
|
658 if(r!=KErrNone) |
|
659 return r; |
|
660 else |
|
661 { |
|
662 if(aMask != 0) |
|
663 iMatchMask = aMask; |
|
664 else |
|
665 iMatchMask = (KDriveAttExclude |KDriveAttMatchedFlags) ; //KDriveAttMatchedFlags ==0xFF so this exclude all drives in DoFindNextInDriveList |
|
666 |
|
667 return KErrNone; |
|
668 |
|
669 } |
|
670 |
|
671 |
|
672 |
|
673 } |
|
674 |