1 /* |
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2 * Copyright (c) 2010 Oracle and/or its affiliates. All rights reserved. |
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3 * |
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4 * Redistribution and use in source and binary forms, with or without |
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5 * modification, are permitted provided that the following conditions |
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6 * are met: |
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7 * |
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8 * - Redistributions of source code must retain the above copyright |
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9 * notice, this list of conditions and the following disclaimer. |
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10 * |
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11 * - Redistributions in binary form must reproduce the above copyright |
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12 * notice, this list of conditions and the following disclaimer in the |
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13 * documentation and/or other materials provided with the distribution. |
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14 * |
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15 * - Neither the name of Oracle nor the names of its |
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16 * contributors may be used to endorse or promote products derived |
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17 * from this software without specific prior written permission. |
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18 * |
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19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
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20 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
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21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
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23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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30 */ |
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31 |
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32 /* |
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33 * This source code is provided to illustrate the usage of a given feature |
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34 * or technique and has been deliberately simplified. Additional steps |
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35 * required for a production-quality application, such as security checks, |
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36 * input validation and proper error handling, might not be present in |
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37 * this sample code. |
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38 */ |
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39 |
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40 |
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41 import java.io.*; |
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42 import java.nio.*; |
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43 import java.nio.channels.*; |
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44 import java.nio.file.*; |
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45 import java.nio.file.spi.*; |
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46 import java.nio.file.attribute.*; |
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47 import java.net.*; |
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48 import java.text.DateFormat; |
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49 import java.text.SimpleDateFormat; |
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50 import java.util.*; |
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51 |
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52 import static java.nio.file.StandardOpenOption.*; |
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53 import static java.nio.file.StandardCopyOption.*; |
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54 /* |
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55 * ZipFileSystem usage demo |
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56 * |
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57 * java Demo action ZipfileName [...] |
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58 * |
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59 * @author Xueming Shen |
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60 */ |
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61 |
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62 public class Demo { |
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63 |
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64 static enum Action { |
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65 rename, // <java Demo rename zipfile src dst> |
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66 // rename entry src to dst inside zipfile |
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67 |
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68 movein, // <java Demo movein zipfile src dst> |
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69 // move an external src file into zipfile |
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70 // as entry dst |
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71 |
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72 moveout, // <java Demo moveout zipfile src dst> |
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73 // move a zipfile entry src out to dst |
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74 |
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75 copy, // <java Demo copy zipfile src dst> |
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76 // copy entry src to dst inside zipfile |
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77 |
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78 copyin, // <java Demo copyin zipfile src dst> |
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79 // copy an external src file into zipfile |
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80 // as entry dst |
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81 |
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82 copyin_attrs, // <java Demo copyin_attrs zipfile src dst> |
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83 // copy an external src file into zipfile |
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84 // as entry dst, with attributes (timestamp) |
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85 |
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86 copyout, // <java Demo copyout zipfile src dst> |
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87 // copy zipfile entry src" out to file dst |
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88 |
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89 copyout_attrs, // <java Demo copyout_attrs zipfile src dst> |
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90 |
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91 zzmove, // <java Demo zzmove zfsrc zfdst path> |
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92 // move entry path/dir from zfsrc to zfdst |
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93 |
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94 zzcopy, // <java Demo zzcopy zfsrc zfdst path> |
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95 // copy path from zipfile zfsrc to zipfile |
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96 // zfdst |
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97 |
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98 attrs, // <java Demo attrs zipfile path> |
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99 // printout the attributes of entry path |
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100 |
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101 attrsspace, // <java Demo attrsspace zipfile path> |
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102 // printout the storespace attrs of entry path |
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103 |
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104 setmtime, // <java Demo setmtime zipfile "MM/dd/yy-HH:mm:ss" path...> |
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105 // set the lastModifiedTime of entry path |
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106 |
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107 setatime, // <java Demo setatime zipfile "MM/dd/yy-HH:mm:ss" path...> |
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108 setctime, // <java Demo setctime zipfile "MM/dd/yy-HH:mm:ss" path...> |
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109 |
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110 lsdir, // <java Demo lsdir zipfile dir> |
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111 // list dir's direct child files/dirs |
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112 |
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113 mkdir, // <java Demo mkdir zipfile dir> |
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114 |
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115 mkdirs, // <java Demo mkdirs zipfile dir> |
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116 |
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117 rmdirs, // <java Demo rmdirs zipfile dir> |
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118 |
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119 list, // <java Demo list zipfile [dir]> |
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120 // recursively list all entries of dir |
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121 // via DirectoryStream |
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122 |
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123 tlist, // <java Demo tlist zipfile [dir]> |
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124 // list with buildDirTree=true |
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125 |
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126 vlist, // <java Demo vlist zipfile [dir]> |
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127 // recursively verbose list all entries of |
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128 // dir via DirectoryStream |
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129 |
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130 walk, // <java Demo walk zipfile [dir]> |
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131 // recursively walk all entries of dir |
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132 // via Files.walkFileTree |
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133 |
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134 twalk, // <java Demo twalk zipfile [dir]> |
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135 // walk with buildDirTree=true |
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136 |
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137 extract, // <java Demo extract zipfile file [...]> |
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138 |
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139 update, // <java Demo extract zipfile file [...]> |
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140 |
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141 delete, // <java Demo delete zipfile file [...]> |
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142 |
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143 add, // <java Demo add zipfile file [...]> |
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144 |
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145 create, // <java Demo create zipfile file [...]> |
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146 // create a new zipfile if it doesn't exit |
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147 // and then add the file(s) into it. |
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148 |
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149 attrs2, // <java Demo attrs2 zipfile file [...]> |
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150 // test different ways to print attrs |
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151 |
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152 prof, |
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153 } |
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154 |
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155 public static void main(String[] args) throws Throwable { |
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156 FileSystemProvider provider = getZipFSProvider(); |
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157 if (provider == null) { |
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158 System.err.println("ZIP filesystem provider is not installed"); |
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159 System.exit(1); |
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160 } |
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161 |
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162 Action action = Action.valueOf(args[0]); |
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163 Map<String, Object> env = env = new HashMap<>(); |
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164 if (action == Action.create) |
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165 env.put("create", "true"); |
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166 try (FileSystem fs = provider.newFileSystem(Paths.get(args[1]), env)) { |
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167 Path path, src, dst; |
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168 switch (action) { |
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169 case rename: |
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170 src = fs.getPath(args[2]); |
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171 dst = fs.getPath(args[3]); |
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172 Files.move(src, dst); |
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173 break; |
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174 case moveout: |
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175 src = fs.getPath(args[2]); |
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176 dst = Paths.get(args[3]); |
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177 Files.move(src, dst); |
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178 break; |
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179 case movein: |
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180 src = Paths.get(args[2]); |
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181 dst = fs.getPath(args[3]); |
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182 Files.move(src, dst); |
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183 break; |
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184 case copy: |
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185 src = fs.getPath(args[2]); |
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186 dst = fs.getPath(args[3]); |
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187 Files.copy(src, dst); |
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188 break; |
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189 case copyout: |
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190 src = fs.getPath(args[2]); |
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191 dst = Paths.get(args[3]); |
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192 Files.copy(src, dst); |
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193 break; |
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194 case copyin: |
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195 src = Paths.get(args[2]); |
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196 dst = fs.getPath(args[3]); |
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197 Files.copy(src, dst); |
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198 break; |
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199 case copyin_attrs: |
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200 src = Paths.get(args[2]); |
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201 dst = fs.getPath(args[3]); |
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202 Files.copy(src, dst, COPY_ATTRIBUTES); |
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203 break; |
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204 case copyout_attrs: |
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205 src = fs.getPath(args[2]); |
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206 dst = Paths.get(args[3]); |
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207 Files.copy(src, dst, COPY_ATTRIBUTES); |
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208 break; |
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209 case zzmove: |
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210 try (FileSystem fs2 = provider.newFileSystem(Paths.get(args[2]), env)) { |
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211 z2zmove(fs, fs2, args[3]); |
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212 } |
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213 break; |
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214 case zzcopy: |
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215 try (FileSystem fs2 = provider.newFileSystem(Paths.get(args[2]), env)) { |
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216 z2zcopy(fs, fs2, args[3]); |
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217 } |
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218 break; |
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219 case attrs: |
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220 for (int i = 2; i < args.length; i++) { |
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221 path = fs.getPath(args[i]); |
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222 System.out.println(path); |
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223 System.out.println( |
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224 Files.readAttributes(path, BasicFileAttributes.class).toString()); |
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225 } |
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226 break; |
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227 case setmtime: |
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228 DateFormat df = new SimpleDateFormat("MM/dd/yyyy-HH:mm:ss"); |
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229 Date newDatetime = df.parse(args[2]); |
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230 for (int i = 3; i < args.length; i++) { |
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231 path = fs.getPath(args[i]); |
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232 Files.setAttribute(path, "lastModifiedTime", |
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233 FileTime.fromMillis(newDatetime.getTime())); |
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234 System.out.println( |
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235 Files.readAttributes(path, BasicFileAttributes.class).toString()); |
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236 } |
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237 break; |
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238 case setctime: |
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239 df = new SimpleDateFormat("MM/dd/yyyy-HH:mm:ss"); |
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240 newDatetime = df.parse(args[2]); |
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241 for (int i = 3; i < args.length; i++) { |
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242 path = fs.getPath(args[i]); |
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243 Files.setAttribute(path, "creationTime", |
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244 FileTime.fromMillis(newDatetime.getTime())); |
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245 System.out.println( |
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246 Files.readAttributes(path, BasicFileAttributes.class).toString()); |
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247 } |
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248 break; |
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249 case setatime: |
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250 df = new SimpleDateFormat("MM/dd/yyyy-HH:mm:ss"); |
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251 newDatetime = df.parse(args[2]); |
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252 for (int i = 3; i < args.length; i++) { |
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253 path = fs.getPath(args[i]); |
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254 Files.setAttribute(path, "lastAccessTime", |
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255 FileTime.fromMillis(newDatetime.getTime())); |
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256 System.out.println( |
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257 Files.readAttributes(path, BasicFileAttributes.class).toString()); |
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258 } |
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259 break; |
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260 case attrsspace: |
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261 path = fs.getPath("/"); |
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262 FileStore fstore = Files.getFileStore(path); |
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263 System.out.printf("filestore[%s]%n", fstore.name()); |
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264 System.out.printf(" totalSpace: %d%n", |
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265 (Long)fstore.getAttribute("totalSpace")); |
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266 System.out.printf(" usableSpace: %d%n", |
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267 (Long)fstore.getAttribute("usableSpace")); |
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268 System.out.printf(" unallocSpace: %d%n", |
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269 (Long)fstore.getAttribute("unallocatedSpace")); |
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270 break; |
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271 case list: |
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272 case tlist: |
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273 if (args.length < 3) |
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274 list(fs.getPath("/"), false); |
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275 else |
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276 list(fs.getPath(args[2]), false); |
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277 break; |
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278 case vlist: |
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279 if (args.length < 3) |
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280 list(fs.getPath("/"), true); |
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281 else |
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282 list(fs.getPath(args[2]), true); |
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283 break; |
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284 case twalk: |
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285 case walk: |
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286 walk(fs.getPath((args.length > 2)? args[2] : "/")); |
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287 break; |
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288 case extract: |
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289 if (args.length == 2) { |
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290 extract(fs, "/"); |
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291 } else { |
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292 for (int i = 2; i < args.length; i++) { |
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293 extract(fs, args[i]); |
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294 } |
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295 } |
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296 break; |
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297 case delete: |
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298 for (int i = 2; i < args.length; i++) |
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299 Files.delete(fs.getPath(args[i])); |
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300 break; |
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301 case create: |
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302 case add: |
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303 case update: |
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304 for (int i = 2; i < args.length; i++) { |
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305 update(fs, args[i]); |
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306 } |
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307 break; |
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308 case lsdir: |
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309 path = fs.getPath(args[2]); |
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310 final String fStr = (args.length > 3)?args[3]:""; |
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311 try (DirectoryStream<Path> ds = Files.newDirectoryStream(path, |
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312 new DirectoryStream.Filter<Path>() { |
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313 @Override |
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314 public boolean accept(Path path) { |
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315 return path.toString().contains(fStr); |
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316 } |
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317 })) |
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318 { |
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319 for (Path p : ds) |
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320 System.out.println(p); |
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321 } |
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322 break; |
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323 case mkdir: |
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324 Files.createDirectory(fs.getPath(args[2])); |
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325 break; |
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326 case mkdirs: |
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327 mkdirs(fs.getPath(args[2])); |
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328 break; |
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329 case attrs2: |
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330 for (int i = 2; i < args.length; i++) { |
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331 path = fs.getPath(args[i]); |
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332 System.out.printf("%n%s%n", path); |
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333 System.out.println("-------(1)---------"); |
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334 System.out.println( |
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335 Files.readAttributes(path, BasicFileAttributes.class).toString()); |
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336 System.out.println("-------(2)---------"); |
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337 Map<String, Object> map = Files.readAttributes(path, "zip:*"); |
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338 for (Map.Entry<String, Object> e : map.entrySet()) { |
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339 System.out.printf(" %s : %s%n", e.getKey(), e.getValue()); |
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340 } |
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341 System.out.println("-------(3)---------"); |
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342 map = Files.readAttributes(path, "size,lastModifiedTime,isDirectory"); |
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343 for (Map.Entry<String, ?> e : map.entrySet()) { |
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344 System.out.printf(" %s : %s%n", e.getKey(), e.getValue()); |
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345 } |
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346 } |
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347 break; |
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348 case prof: |
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349 list(fs.getPath("/"), false); |
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350 while (true) { |
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351 Thread.sleep(10000); |
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352 //list(fs.getPath("/"), true); |
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353 System.out.println("sleeping..."); |
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354 } |
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355 } |
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356 } catch (Exception x) { |
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357 x.printStackTrace(); |
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358 } |
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359 } |
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360 |
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361 private static FileSystemProvider getZipFSProvider() { |
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362 for (FileSystemProvider provider : FileSystemProvider.installedProviders()) { |
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363 if ("jar".equals(provider.getScheme())) |
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364 return provider; |
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365 } |
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366 return null; |
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367 } |
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368 |
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369 @SuppressWarnings("unused") |
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370 /** |
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371 * Not used in demo, but included for demonstrational purposes. |
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372 */ |
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373 private static byte[] getBytes(String name) { |
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374 return name.getBytes(); |
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375 } |
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376 |
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377 @SuppressWarnings("unused") |
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378 /** |
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379 * Not used in demo, but included for demonstrational purposes. |
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380 */ |
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381 private static String getString(byte[] name) { |
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382 return new String(name); |
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383 } |
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384 |
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385 private static void walk(Path path) throws IOException |
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386 { |
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387 Files.walkFileTree( |
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388 path, |
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389 new SimpleFileVisitor<Path>() { |
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390 private int indent = 0; |
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391 private void indent() { |
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392 int n = 0; |
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393 while (n++ < indent) |
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394 System.out.printf(" "); |
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395 } |
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396 |
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397 @Override |
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398 public FileVisitResult visitFile(Path file, |
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399 BasicFileAttributes attrs) |
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400 { |
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401 indent(); |
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402 System.out.printf("%s%n", file.getFileName().toString()); |
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403 return FileVisitResult.CONTINUE; |
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404 } |
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405 |
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406 @Override |
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407 public FileVisitResult preVisitDirectory(Path dir, |
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408 BasicFileAttributes attrs) |
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409 { |
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410 indent(); |
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411 System.out.printf("[%s]%n", dir.toString()); |
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412 indent += 2; |
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413 return FileVisitResult.CONTINUE; |
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414 } |
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415 |
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416 @Override |
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417 public FileVisitResult postVisitDirectory(Path dir, |
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418 IOException ioe) |
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419 { |
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420 indent -= 2; |
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421 return FileVisitResult.CONTINUE; |
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422 } |
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423 }); |
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424 } |
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425 |
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426 private static void update(FileSystem fs, String path) throws Throwable{ |
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427 Path src = FileSystems.getDefault().getPath(path); |
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428 if (Files.isDirectory(src)) { |
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429 try (DirectoryStream<Path> ds = Files.newDirectoryStream(src)) { |
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430 for (Path child : ds) |
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431 update(fs, child.toString()); |
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432 } |
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433 } else { |
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434 Path dst = fs.getPath(path); |
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435 Path parent = dst.getParent(); |
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436 if (parent != null && Files.notExists(parent)) |
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437 mkdirs(parent); |
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438 Files.copy(src, dst, REPLACE_EXISTING); |
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439 } |
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440 } |
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441 |
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442 private static void extract(FileSystem fs, String path) throws Throwable{ |
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443 Path src = fs.getPath(path); |
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444 if (Files.isDirectory(src)) { |
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445 try (DirectoryStream<Path> ds = Files.newDirectoryStream(src)) { |
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446 for (Path child : ds) |
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447 extract(fs, child.toString()); |
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448 } |
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449 } else { |
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450 if (path.startsWith("/")) |
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451 path = path.substring(1); |
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452 Path dst = FileSystems.getDefault().getPath(path); |
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453 Path parent = dst.getParent(); |
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454 if (Files.notExists(parent)) |
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455 mkdirs(parent); |
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456 Files.copy(src, dst, REPLACE_EXISTING); |
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457 } |
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458 } |
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459 |
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460 // use DirectoryStream |
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461 private static void z2zcopy(FileSystem src, FileSystem dst, String path) |
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462 throws IOException |
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463 { |
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464 Path srcPath = src.getPath(path); |
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465 Path dstPath = dst.getPath(path); |
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466 |
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467 if (Files.isDirectory(srcPath)) { |
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468 if (!Files.exists(dstPath)) { |
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469 try { |
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470 mkdirs(dstPath); |
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471 } catch (FileAlreadyExistsException x) {} |
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472 } |
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473 try (DirectoryStream<Path> ds = Files.newDirectoryStream(srcPath)) { |
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474 for (Path child : ds) { |
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475 z2zcopy(src, dst, |
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476 path + (path.endsWith("/")?"":"/") + child.getFileName()); |
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477 } |
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478 } |
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479 } else { |
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480 //System.out.println("copying..." + path); |
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481 Files.copy(srcPath, dstPath); |
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482 } |
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483 } |
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484 |
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485 // use TreeWalk to move |
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486 private static void z2zmove(FileSystem src, FileSystem dst, String path) |
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487 throws IOException |
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488 { |
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489 final Path srcPath = src.getPath(path).toAbsolutePath(); |
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490 final Path dstPath = dst.getPath(path).toAbsolutePath(); |
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491 |
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492 Files.walkFileTree(srcPath, new SimpleFileVisitor<Path>() { |
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493 |
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494 @Override |
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495 public FileVisitResult visitFile(Path file, |
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496 BasicFileAttributes attrs) |
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497 { |
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498 Path dst = srcPath.relativize(file); |
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499 dst = dstPath.resolve(dst); |
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500 try { |
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501 Path parent = dstPath.getParent(); |
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502 if (parent != null && Files.notExists(parent)) |
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503 mkdirs(parent); |
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504 Files.move(file, dst); |
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505 } catch (IOException x) { |
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506 x.printStackTrace(); |
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507 } |
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508 return FileVisitResult.CONTINUE; |
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509 } |
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510 |
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511 @Override |
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512 public FileVisitResult preVisitDirectory(Path dir, |
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513 BasicFileAttributes attrs) |
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514 { |
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515 Path dst = srcPath.relativize(dir); |
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516 dst = dstPath.resolve(dst); |
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517 try { |
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518 |
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519 if (Files.notExists(dst)) |
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520 mkdirs(dst); |
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521 } catch (IOException x) { |
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522 x.printStackTrace(); |
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523 } |
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524 return FileVisitResult.CONTINUE; |
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525 } |
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526 |
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527 @Override |
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528 public FileVisitResult postVisitDirectory(Path dir, |
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529 IOException ioe) |
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530 throws IOException |
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531 { |
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532 try { |
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533 Files.delete(dir); |
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534 } catch (IOException x) { |
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535 //x.printStackTrace(); |
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536 } |
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537 return FileVisitResult.CONTINUE; |
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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 private static void mkdirs(Path path) throws IOException { |
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544 path = path.toAbsolutePath(); |
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545 Path parent = path.getParent(); |
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546 if (parent != null) { |
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547 if (Files.notExists(parent)) |
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548 mkdirs(parent); |
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549 } |
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550 Files.createDirectory(path); |
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551 } |
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552 |
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553 @SuppressWarnings("unused") |
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554 /** |
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555 * Not used in demo, but included for demonstrational purposes. |
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556 */ |
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557 private static void rmdirs(Path path) throws IOException { |
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558 while (path != null && path.getNameCount() != 0) { |
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559 Files.delete(path); |
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560 path = path.getParent(); |
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561 } |
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562 } |
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563 |
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564 private static void list(Path path, boolean verbose ) throws IOException { |
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565 if (!"/".equals(path.toString())) { |
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566 System.out.printf(" %s%n", path.toString()); |
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567 if (verbose) |
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568 System.out.println(Files.readAttributes(path, BasicFileAttributes.class).toString()); |
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569 } |
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570 if (Files.notExists(path)) |
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571 return; |
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572 if (Files.isDirectory(path)) { |
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573 try (DirectoryStream<Path> ds = Files.newDirectoryStream(path)) { |
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574 for (Path child : ds) |
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575 list(child, verbose); |
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576 } |
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577 } |
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578 } |
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579 |
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580 @SuppressWarnings("unused") |
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581 /** |
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582 * Checks that the content of two paths are equal. |
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583 * Not used in demo, but included for demonstrational purposes. |
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584 */ |
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585 private static void checkEqual(Path src, Path dst) throws IOException |
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586 { |
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587 //System.out.printf("checking <%s> vs <%s>...%n", |
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588 // src.toString(), dst.toString()); |
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589 |
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590 //streams |
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591 byte[] bufSrc = new byte[8192]; |
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592 byte[] bufDst = new byte[8192]; |
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593 try (InputStream isSrc = Files.newInputStream(src); |
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594 InputStream isDst = Files.newInputStream(dst)) |
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595 { |
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596 int nSrc = 0; |
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597 while ((nSrc = isSrc.read(bufSrc)) != -1) { |
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598 int nDst = 0; |
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599 while (nDst < nSrc) { |
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600 int n = isDst.read(bufDst, nDst, nSrc - nDst); |
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601 if (n == -1) { |
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602 System.out.printf("checking <%s> vs <%s>...%n", |
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603 src.toString(), dst.toString()); |
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604 throw new RuntimeException("CHECK FAILED!"); |
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605 } |
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606 nDst += n; |
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607 } |
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608 while (--nSrc >= 0) { |
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609 if (bufSrc[nSrc] != bufDst[nSrc]) { |
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610 System.out.printf("checking <%s> vs <%s>...%n", |
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611 src.toString(), dst.toString()); |
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612 throw new RuntimeException("CHECK FAILED!"); |
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613 } |
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614 nSrc--; |
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615 } |
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616 } |
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617 } |
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618 |
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619 // channels |
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620 |
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621 try (SeekableByteChannel chSrc = Files.newByteChannel(src); |
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622 SeekableByteChannel chDst = Files.newByteChannel(dst)) |
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623 { |
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624 if (chSrc.size() != chDst.size()) { |
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625 System.out.printf("src[%s].size=%d, dst[%s].size=%d%n", |
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626 chSrc.toString(), chSrc.size(), |
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627 chDst.toString(), chDst.size()); |
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628 throw new RuntimeException("CHECK FAILED!"); |
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629 } |
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630 ByteBuffer bbSrc = ByteBuffer.allocate(8192); |
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631 ByteBuffer bbDst = ByteBuffer.allocate(8192); |
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632 |
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633 int nSrc = 0; |
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634 while ((nSrc = chSrc.read(bbSrc)) != -1) { |
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635 int nDst = chDst.read(bbDst); |
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636 if (nSrc != nDst) { |
|
637 System.out.printf("checking <%s> vs <%s>...%n", |
|
638 src.toString(), dst.toString()); |
|
639 throw new RuntimeException("CHECK FAILED!"); |
|
640 } |
|
641 while (--nSrc >= 0) { |
|
642 if (bbSrc.get(nSrc) != bbDst.get(nSrc)) { |
|
643 System.out.printf("checking <%s> vs <%s>...%n", |
|
644 src.toString(), dst.toString()); |
|
645 throw new RuntimeException("CHECK FAILED!"); |
|
646 } |
|
647 nSrc--; |
|
648 } |
|
649 bbSrc.flip(); |
|
650 bbDst.flip(); |
|
651 } |
|
652 } catch (IOException x) { |
|
653 x.printStackTrace(); |
|
654 } |
|
655 } |
|
656 |
|
657 private static void fchCopy(Path src, Path dst) throws IOException |
|
658 { |
|
659 Set<OpenOption> read = new HashSet<>(); |
|
660 read.add(READ); |
|
661 Set<OpenOption> openwrite = new HashSet<>(); |
|
662 openwrite.add(CREATE_NEW); |
|
663 openwrite.add(WRITE); |
|
664 |
|
665 try (FileChannel srcFc = src.getFileSystem().provider().newFileChannel(src, read); |
|
666 FileChannel dstFc = dst.getFileSystem().provider().newFileChannel(dst, openwrite)) |
|
667 { |
|
668 ByteBuffer bb = ByteBuffer.allocate(8192); |
|
669 while (srcFc.read(bb) >= 0) { |
|
670 bb.flip(); |
|
671 dstFc.write(bb); |
|
672 bb.clear(); |
|
673 } |
|
674 } |
|
675 } |
|
676 |
|
677 private static void chCopy(Path src, Path dst) throws IOException |
|
678 { |
|
679 Set<OpenOption> read = new HashSet<>(); |
|
680 read.add(READ); |
|
681 Set<OpenOption> openwrite = new HashSet<>(); |
|
682 openwrite.add(CREATE_NEW); |
|
683 openwrite.add(WRITE); |
|
684 |
|
685 try (SeekableByteChannel srcCh = Files.newByteChannel(src, read); |
|
686 SeekableByteChannel dstCh = Files.newByteChannel(dst, openwrite)) |
|
687 { |
|
688 ByteBuffer bb = ByteBuffer.allocate(8192); |
|
689 while (srcCh.read(bb) >= 0) { |
|
690 bb.flip(); |
|
691 dstCh.write(bb); |
|
692 bb.clear(); |
|
693 } |
|
694 } |
|
695 } |
|
696 |
|
697 private static void streamCopy(Path src, Path dst) throws IOException |
|
698 { |
|
699 byte[] buf = new byte[8192]; |
|
700 try (InputStream isSrc = Files.newInputStream(src); |
|
701 OutputStream osDst = Files.newOutputStream(dst)) |
|
702 { |
|
703 int n = 0; |
|
704 while ((n = isSrc.read(buf)) != -1) { |
|
705 osDst.write(buf, 0, n); |
|
706 } |
|
707 } |
|
708 } |
|
709 } |
|