Mercurial > projects > dwt-mac
annotate dwt/dnd/FileTransfer.d @ 0:380af2bdd8e5
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author | Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com> |
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date | Sat, 09 Aug 2008 17:00:02 +0200 |
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children | 1a8b3cb347e0 |
rev | line source |
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0
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1 /******************************************************************************* |
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2 * Copyright (c) 2000, 2006 IBM Corporation and others. |
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3 * All rights reserved. This program and the accompanying materials |
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4 * are made available under the terms of the Eclipse Public License v1.0 |
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5 * which accompanies this distribution, and is available at |
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6 * http://www.eclipse.org/legal/epl-v10.html |
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7 * |
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8 * Contributors: |
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9 * IBM Corporation - initial API and implementation |
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10 * Outhink - support for typeFileURL |
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11 *******************************************************************************/ |
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12 module dwt.dnd; |
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13 |
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14 import java.io.*; |
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15 import dwt.internal.carbon.*; |
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16 |
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17 /** |
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18 * The class <code>FileTransfer</code> provides a platform specific mechanism |
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19 * for converting a list of files represented as a java <code>String[]</code> to a |
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20 * platform specific representation of the data and vice versa. |
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21 * Each <code>String</code> in the array contains the absolute path for a single |
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22 * file or directory. |
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23 * See <code>Transfer</code> for additional information. |
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24 * |
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25 * <p>An example of a java <code>String[]</code> containing a list of files is shown |
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26 * below:</p> |
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27 * |
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28 * <code><pre> |
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29 * File file1 = new File("C:\temp\file1"); |
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30 * File file2 = new File("C:\temp\file2"); |
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31 * String[] fileData = new String[2]; |
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32 * fileData[0] = file1.getAbsolutePath(); |
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33 * fileData[1] = file2.getAbsolutePath(); |
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34 * </code></pre> |
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35 */ |
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36 public class FileTransfer : ByteArrayTransfer { |
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37 |
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38 static FileTransfer _instance = new FileTransfer(); |
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39 static final String HFS = "hfs "; //$NON-NLS-1$ |
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40 static final String FURL = "furl"; //$NON-NLS-1$ |
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41 static final int HFSID = registerType(HFS); |
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42 static final int FURLID = registerType(FURL); |
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43 |
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44 FileTransfer() {} |
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45 |
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46 /** |
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47 * Returns the singleton instance of the FileTransfer class. |
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48 * |
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49 * @return the singleton instance of the FileTransfer class |
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50 */ |
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51 public static FileTransfer getInstance () { |
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52 return _instance; |
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53 } |
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54 |
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55 /** |
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56 * This implementation of <code>javaToNative</code> converts a list of file names |
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57 * represented by a java <code>String[]</code> to a platform specific representation. |
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58 * Each <code>String</code> in the array contains the absolute path for a single |
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59 * file or directory. For additional information see |
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60 * <code>Transfer#javaToNative</code>. |
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61 * |
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62 * @param object a java <code>String[]</code> containing the file names to be |
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63 * converted |
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64 * @param transferData an empty <code>TransferData</code> object; this |
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65 * object will be filled in on return with the platform specific format of the data |
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66 */ |
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67 public void javaToNative(Object object, TransferData transferData) { |
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68 if (!checkFile(object) || !isSupportedType(transferData)) { |
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69 DND.error(DND.ERROR_INVALID_DATA); |
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70 } |
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71 String[] files = (String[])object; |
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72 transferData.result = -1; |
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73 byte[][] data = new byte[files.length][]; |
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74 for (int i = 0; i < data.length; i++) { |
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75 File file = new File(files[i]); |
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76 bool isDirectory = file.isDirectory(); |
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77 String fileName = files[i]; |
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78 char [] chars = new char [fileName.length ()]; |
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79 fileName.getChars (0, chars.length, chars, 0); |
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80 int cfString = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, chars, chars.length); |
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81 if (cfString is 0) return; |
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82 try { |
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83 int url = OS.CFURLCreateWithFileSystemPath(OS.kCFAllocatorDefault, cfString, OS.kCFURLPOSIXPathStyle, isDirectory); |
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84 if (url is 0) return; |
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85 try { |
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86 if (transferData.type is HFSID) { |
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87 byte[] fsRef = new byte[80]; |
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88 if (!OS.CFURLGetFSRef(url, fsRef)) return; |
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89 byte[] fsSpec = new byte[70]; |
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90 if (OS.FSGetCatalogInfo(fsRef, 0, null, null, fsSpec, null) !is OS.noErr) return; |
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91 byte[] hfsflavor = new byte[10 + fsSpec.length]; |
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92 byte[] finfo = new byte[16]; |
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93 OS.FSpGetFInfo(fsSpec, finfo); |
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94 System.arraycopy(finfo, 0, hfsflavor, 0, 10); |
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95 System.arraycopy(fsSpec, 0, hfsflavor, 10, fsSpec.length); |
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96 data[i] = hfsflavor; |
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97 } |
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98 if (transferData.type is FURLID) { |
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99 int encoding = OS.CFStringGetSystemEncoding(); |
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100 int theData = OS.CFURLCreateData(OS.kCFAllocatorDefault, url, encoding, true); |
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101 if (theData is 0) return; |
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102 try { |
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103 int length = OS.CFDataGetLength(theData); |
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104 byte[] buffer = new byte[length]; |
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105 CFRange range = new CFRange(); |
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106 range.length = length; |
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107 OS.CFDataGetBytes(theData, range, buffer); |
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108 data[i] = buffer; |
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109 } finally { |
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110 OS.CFRelease(theData); |
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111 } |
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112 } |
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113 } finally { |
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114 OS.CFRelease(url); |
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115 } |
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116 } finally { |
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117 OS.CFRelease(cfString); |
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118 } |
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119 } |
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120 transferData.data = data; |
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121 transferData.result = 0; |
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122 } |
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123 /** |
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124 * This implementation of <code>nativeToJava</code> converts a platform specific |
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125 * representation of a list of file names to a java <code>String[]</code>. |
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126 * Each String in the array contains the absolute path for a single file or directory. |
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127 * For additional information see <code>Transfer#nativeToJava</code>. |
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128 * |
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129 * @param transferData the platform specific representation of the data to be |
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130 * been converted |
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131 * @return a java <code>String[]</code> containing a list of file names if the |
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132 * conversion was successful; otherwise null |
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133 */ |
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134 public Object nativeToJava(TransferData transferData) { |
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135 if (!isSupportedType(transferData) || transferData.data is null) return null; |
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136 if (transferData.data.length is 0) return null; |
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137 int count = transferData.data.length; |
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138 String[] fileNames = new String[count]; |
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139 for (int i=0; i<count; i++) { |
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140 byte[] data = transferData.data[i]; |
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141 int url = 0; |
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142 if (transferData.type is HFSID) { |
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143 byte[] fsspec = new byte[data.length - 10]; |
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144 System.arraycopy(data, 10, fsspec, 0, fsspec.length); |
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145 byte[] fsRef = new byte[80]; |
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146 if (OS.FSpMakeFSRef(fsspec, fsRef) !is OS.noErr) return null; |
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147 url = OS.CFURLCreateFromFSRef(OS.kCFAllocatorDefault, fsRef); |
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148 if (url is 0) return null; |
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149 } |
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150 if (transferData.type is FURLID) { |
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151 int encoding = OS.kCFStringEncodingUTF8; |
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152 url = OS.CFURLCreateWithBytes(OS.kCFAllocatorDefault, data, data.length, encoding, 0); |
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153 if (url is 0) return null; |
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154 } |
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155 try { |
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156 int path = OS.CFURLCopyFileSystemPath(url, OS.kCFURLPOSIXPathStyle); |
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157 if (path is 0) return null; |
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158 try { |
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159 int length = OS.CFStringGetLength(path); |
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160 if (length is 0) return null; |
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161 char[] buffer= new char[length]; |
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162 CFRange range = new CFRange(); |
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163 range.length = length; |
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164 OS.CFStringGetCharacters(path, range, buffer); |
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165 fileNames[i] = new String(buffer); |
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166 } finally { |
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167 OS.CFRelease(path); |
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168 } |
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169 } finally { |
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170 OS.CFRelease(url); |
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171 } |
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172 } |
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173 return fileNames; |
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174 } |
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175 |
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176 protected int[] getTypeIds(){ |
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177 return new int[] {FURLID, HFSID}; |
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178 } |
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179 |
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180 protected String[] getTypeNames(){ |
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181 return new String[] {FURL, HFS}; |
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182 } |
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183 |
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184 bool checkFile(Object object) { |
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185 if (object is null || !(object instanceof String[]) || ((String[])object).length is 0) return false; |
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186 String[] Strings = (String[])object; |
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187 for (int i = 0; i < Strings.length; i++) { |
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188 if (Strings[i] is null || Strings[i].length() is 0) return false; |
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189 } |
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190 return true; |
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191 } |
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192 |
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193 protected bool validate(Object object) { |
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194 return checkFile(object); |
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195 } |
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196 } |