author | Pat Downey <patd@symbian.org> |
Wed, 01 Sep 2010 12:32:13 +0100 | |
branch | RCL_3 |
changeset 33 | 04b7640f6fb5 |
parent 0 | 05da4621cfb2 |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: This class is used for converting media files |
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* |
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*/ |
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|
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package com.nokia.tools.themeinstaller.mediaconverter; |
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|
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import java.io.BufferedReader; |
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import java.io.File; |
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import java.io.IOException; |
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import java.io.InputStream; |
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import java.io.InputStreamReader; |
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import java.net.URL; |
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import java.util.ArrayList; |
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import java.util.Iterator; |
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import java.util.List; |
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|
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import javax.imageio.IIOImage; |
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import javax.imageio.ImageIO; |
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import javax.imageio.ImageReader; |
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import javax.imageio.ImageWriter; |
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import javax.imageio.stream.ImageInputStream; |
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import javax.imageio.stream.ImageOutputStream; |
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|
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import com.nokia.tools.themeinstaller.odtconverter.ConverterProperties; |
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|
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/** |
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* Base class for different MediaConverters |
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* Media converters are used for e.g. converting jpg to mbm |
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* @author jutarhon |
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* |
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*/ |
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public class MediaConverter |
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{ |
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protected static final String MEDIA_CONVERTER_APPLICATION= "media_converter"; |
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private static final String WINDOWS_EXCUTABLE_EXTENSION = "exe"; |
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private static final String LINUX_OS_NAME = "linux"; |
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private static final String OPERATING_SYSTEM_PROPERTY = "os.name"; |
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protected static final char SPACE = ' '; |
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protected static final char DOT = '.'; |
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private static final String BMP = "bmp"; |
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private static final String COLOR_SETTING = "color_setting"; |
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protected static String DEFAULT_SUCCESS_LINE = "Success."; |
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protected ConverterProperties iProperties; |
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private Process iProcess; |
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protected String iExtraParameters = null; |
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/** |
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* Default constructor. |
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* @throws IOException If loading properties fails |
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*/ |
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public MediaConverter() throws IOException |
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{ |
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iProperties = new ConverterProperties(); |
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} |
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/** |
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* Returns possible set extra parameters for running converter application |
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* or null if not set |
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* @return the iExtraParameters |
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*/ |
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public String getExtraParameters() |
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{ |
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return iExtraParameters; |
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} |
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/** |
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* Sets extra parameters for running converter application |
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* Set null for unsetting |
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* @param aExtraParameters Extra parameters to set |
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*/ |
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public void setExtraParameters( String aExtraParameters ) |
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{ |
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iExtraParameters = aExtraParameters; |
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} |
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/** |
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* Returns command line parameters for specified filenames |
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* including the actual executable |
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* example: bmconv.exe target.mbm source.jpg |
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* @param aFilenames List of filenames to added to command line |
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* @param aTargetFile Filename for target bitmap |
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* @return Executable parameters |
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*/ |
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protected String getExecParameters( List aFilenames, String aTargetFile ) |
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{ |
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StringBuffer sb = new StringBuffer(); |
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// Get the execution location |
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URL resource = |
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getClass().getProtectionDomain().getCodeSource().getLocation(); |
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File bin = new File( resource.getPath() ); |
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107 |
|
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// Find the bmconv from the installation directory |
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sb.append( bin.getParent() + File.separatorChar ); |
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110 |
|
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// Windows uses bmconv.exe and Linux bmconv |
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if ( System.getProperty( OPERATING_SYSTEM_PROPERTY ).equalsIgnoreCase( |
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LINUX_OS_NAME ) ) |
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114 |
{ |
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sb.append( iProperties.getProperty( MEDIA_CONVERTER_APPLICATION ) ); |
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} |
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117 |
else |
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118 |
{ |
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sb.append( iProperties.getProperty( MEDIA_CONVERTER_APPLICATION ) |
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+ DOT + WINDOWS_EXCUTABLE_EXTENSION ); |
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121 |
} |
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122 |
|
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sb.append( SPACE ); |
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if( iExtraParameters != null ) |
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125 |
{ |
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sb.append( iExtraParameters ); |
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sb.append( SPACE ); |
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} |
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sb.append( aTargetFile ); |
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sb.append( SPACE ); |
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for ( Iterator iterator = aFilenames.iterator(); iterator.hasNext(); ) |
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132 |
{ |
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sb.append( iProperties.getProperty( COLOR_SETTING ) ); |
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sb.append( iterator.next() ); |
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if( iterator.hasNext() ) |
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136 |
{ |
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sb.append( SPACE ); |
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138 |
} |
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139 |
} |
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140 |
return sb.toString(); |
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141 |
} |
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142 |
/** |
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143 |
* Getter for environment variables in form "key=value" |
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* To be overwritten in derived class if environment variables are needed |
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* @return String array of "key=value" pairs. |
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146 |
*/ |
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protected String[] getEnvironmentVariables() |
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148 |
{ |
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149 |
return null; |
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150 |
} |
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151 |
|
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152 |
/** |
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153 |
* Returns success line that is excepted in output |
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* @return Success line |
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155 |
*/ |
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156 |
protected String getSuccesIndicationLine() |
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157 |
{ |
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158 |
return DEFAULT_SUCCESS_LINE; |
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159 |
} |
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160 |
|
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161 |
/** |
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162 |
* Cancels the executing conversion operation |
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163 |
*/ |
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164 |
public void cancelConversion() |
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165 |
{ |
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166 |
if( iProcess != null ) |
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167 |
{ |
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168 |
iProcess.destroy(); |
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169 |
} |
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170 |
} |
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171 |
|
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172 |
/** |
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173 |
* Converts one ore more files to target file |
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* @param aFilenames Files to be converted |
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175 |
* @param aTargetFile Target file |
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* @throws IOException If IO error occurs or tool fails conversion |
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177 |
*/ |
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178 |
public void convertMedia( List aFilenames, |
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179 |
String aTargetFile ) throws IOException |
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180 |
{ |
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181 |
ArrayList newFiles = new ArrayList(); |
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182 |
|
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183 |
checkMedias( aFilenames, newFiles ); |
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184 |
Runtime rt = Runtime.getRuntime(); |
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185 |
iProcess = rt.exec( getExecParameters( aFilenames, aTargetFile ), |
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186 |
getEnvironmentVariables() ); |
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187 |
try |
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188 |
{ |
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189 |
iProcess.waitFor(); |
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190 |
} |
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191 |
catch ( InterruptedException e ) |
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192 |
{ |
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193 |
throw new IOException( "Conversion interrupted" ); |
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194 |
} |
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195 |
|
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196 |
if( iProcess.exitValue() != 0 ) |
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197 |
{ |
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198 |
InputStream input = null; |
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199 |
BufferedReader in = null; |
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200 |
StringBuffer sb = null; |
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201 |
try |
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202 |
{ |
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203 |
// reading the error logs |
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input = iProcess.getErrorStream(); |
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205 |
in = new BufferedReader( new InputStreamReader( input ) ); |
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sb = new StringBuffer(); |
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207 |
String line = null; |
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while ( ( line = in.readLine() ) != null ) |
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209 |
{ |
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210 |
sb.append( line ); |
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211 |
sb.append( '\n' ); |
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212 |
} |
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213 |
} |
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214 |
finally |
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215 |
{ |
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216 |
if( input != null ) |
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217 |
{ |
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input.close(); |
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219 |
} |
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220 |
if( in != null ) |
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221 |
{ |
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in.close(); |
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} |
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} |
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225 |
|
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deleteTemporaryFiles( newFiles ); |
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|
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throw new IOException( "Conversion failed with error code: " + |
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iProcess.exitValue() + |
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"\nError log: " + sb.toString() ); |
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230 |
} |
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// read the output logs, and check that there is success indication (in case that tool does not |
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// support sending error code) |
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boolean success = false; |
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String line = null; |
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String lastLine = null; |
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InputStream input = null; |
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BufferedReader in = null; |
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try |
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239 |
{ |
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input = iProcess.getInputStream(); |
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in = new BufferedReader( new InputStreamReader( input ) ); |
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while ( ( line = in.readLine() ) != null ) |
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243 |
{ |
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if( line.equals( getSuccesIndicationLine() ) ) |
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245 |
{ |
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success = true; |
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247 |
break; |
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248 |
} |
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lastLine = line; |
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250 |
} |
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251 |
} |
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252 |
finally |
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253 |
{ |
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254 |
if( input != null ) |
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|
255 |
{ |
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256 |
input.close(); |
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257 |
} |
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258 |
if( in != null ) |
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|
259 |
{ |
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260 |
in.close(); |
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|
261 |
} |
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262 |
} |
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263 |
iProcess = null; |
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264 |
// Delete temporary files |
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265 |
deleteTemporaryFiles( newFiles ); |
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266 |
// did not found success line |
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267 |
if( !success ) |
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|
268 |
{ |
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|
269 |
throw new IOException( "Running media converter failed: " + lastLine ); |
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|
270 |
} |
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|
271 |
} |
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|
272 |
|
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|
273 |
/** |
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|
274 |
* Delete temporary files |
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* @param newFiles List of temporary files |
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276 |
* @throws IOException If file deletion fails |
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277 |
*/ |
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278 |
protected void deleteTemporaryFiles( List aNewFiles ) throws IOException |
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|
279 |
{ |
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|
280 |
for ( Iterator iterator = aNewFiles.iterator(); iterator.hasNext(); ) |
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|
281 |
{ |
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|
282 |
String filename = ( String ) iterator.next(); |
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|
283 |
File file = new File( filename ); |
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|
284 |
if( !file.delete() ) |
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|
285 |
{ |
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|
286 |
throw new IOException( "Temporary file deletion failed: " + filename ); |
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|
287 |
} |
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|
288 |
} |
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|
289 |
} |
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|
290 |
|
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|
291 |
/** |
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|
292 |
* Checks that input medias does not contain illegal files and converts |
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|
293 |
* other image formats to BMP |
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|
294 |
* @param aFilenames List of files to be added in MBM file |
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|
295 |
* @param aNewFiles List of created temporary files |
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|
296 |
* @throws IOException thrown if some of encoders are missing, or some error in image reading/writing |
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|
297 |
*/ |
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|
298 |
protected void checkMedias( List aFilenames, |
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|
299 |
List aNewFiles ) throws IOException |
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|
300 |
{ |
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|
301 |
// load BMP writer |
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|
302 |
Iterator writers = ImageIO.getImageWritersByFormatName( BMP ); |
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|
303 |
if( !writers.hasNext() ) |
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|
304 |
{ |
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diff
changeset
|
305 |
throw new IOException( "BMP encoder not found" ); |
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|
306 |
} |
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|
307 |
ImageWriter bmpWriter = ( ImageWriter ) writers.next(); |
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Revision: 201003
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|
308 |
|
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|
309 |
ArrayList newNames = new ArrayList(); |
05da4621cfb2
Revision: 201003
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|
310 |
// Go through all files and check if there is something else than BMP |
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Revision: 201003
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diff
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|
311 |
for ( Iterator iterator = aFilenames.iterator(); |
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|
312 |
iterator.hasNext(); ) |
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Revision: 201003
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diff
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|
313 |
{ |
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|
314 |
String imageName = ( String ) iterator.next(); |
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|
315 |
ImageInputStream input = ImageIO.createImageInputStream( |
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Revision: 201003
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|
316 |
new File( imageName ) ); |
05da4621cfb2
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diff
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|
317 |
|
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|
318 |
String destinationImage = null; |
05da4621cfb2
Revision: 201003
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diff
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|
319 |
try |
05da4621cfb2
Revision: 201003
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diff
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|
320 |
{ |
05da4621cfb2
Revision: 201003
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parents:
diff
changeset
|
321 |
Iterator readers = ImageIO.getImageReaders( input ); |
05da4621cfb2
Revision: 201003
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parents:
diff
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322 |
if( !readers.hasNext() ) |
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323 |
{ |
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throw new IOException( "Unknown file" ); |
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} |
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ImageReader ir = ( ImageReader ) readers.next(); |
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//Convert file if it is not BMP |
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destinationImage = imageName; |
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if( !ir.getFormatName().equalsIgnoreCase( BMP ) ) |
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330 |
{ |
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331 |
// read original image |
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ir.setInput( input ); |
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IIOImage image = ir.readAll( 0, null ); |
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destinationImage = imageName.substring( |
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0, imageName.lastIndexOf( DOT ) + 1 ) + BMP; |
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File destFile = new File( destinationImage ); |
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int index = 1; |
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// create unique name to not overwrite any existing files |
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while( destFile.exists() ) |
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{ |
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destinationImage = imageName.substring( 0, |
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imageName.lastIndexOf( DOT ) ) |
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+ index++ + DOT + BMP; |
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destFile = new File( destinationImage ); |
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} |
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// Write image back in BMP format |
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ImageOutputStream output = |
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ImageIO.createImageOutputStream( destFile ); |
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try |
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350 |
{ |
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bmpWriter.setOutput( output ); |
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bmpWriter.write( image ); |
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353 |
} |
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354 |
finally |
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355 |
{ |
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if( output != null ) |
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357 |
{ |
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output.close(); |
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359 |
} |
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360 |
} |
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aNewFiles.add( destinationImage ); |
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} |
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363 |
} |
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364 |
finally |
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365 |
{ |
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366 |
if( input != null ) |
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367 |
{ |
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input.close(); |
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369 |
} |
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370 |
} |
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371 |
|
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newNames.add( destinationImage ); |
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373 |
} |
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// change new names to list |
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aFilenames.clear(); |
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376 |
aFilenames.addAll( newNames ); |
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377 |
} |
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378 |
} |