Mercurial Hosting > luan
annotate src/luan/lib/IoLib.java @ 164:78ba371ea1e9
merge Os.File into Io.File and remove Os
git-svn-id: https://luan-java.googlecode.com/svn/trunk@165 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Fri, 20 Jun 2014 23:23:16 +0000 |
parents | cc3a0578edac |
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1 package luan.lib; |
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3 import java.io.InputStream; |
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4 import java.io.OutputStream; |
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5 import java.io.PrintStream; |
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6 import java.io.Reader; |
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7 import java.io.Writer; |
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8 import java.io.FileReader; |
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9 import java.io.FileWriter; |
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10 import java.io.BufferedReader; |
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11 import java.io.BufferedWriter; |
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12 import java.io.BufferedInputStream; |
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13 import java.io.BufferedOutputStream; |
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14 import java.io.File; |
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15 import java.io.FileInputStream; |
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16 import java.io.FileOutputStream; |
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17 import java.io.InputStreamReader; |
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18 import java.io.OutputStreamWriter; |
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19 import java.io.ByteArrayInputStream; |
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20 import java.io.DataInputStream; |
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21 import java.io.DataOutputStream; |
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22 import java.io.IOException; |
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23 import java.net.URL; |
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24 import java.net.Socket; |
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25 import java.net.ServerSocket; |
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26 import java.net.MalformedURLException; |
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27 import luan.LuanState; |
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28 import luan.LuanTable; |
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29 import luan.LuanFunction; |
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30 import luan.LuanJavaFunction; |
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31 import luan.LuanException; |
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32 |
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33 |
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34 public final class IoLib { |
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35 |
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36 public static final LuanFunction LOADER = new LuanFunction() { |
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37 @Override public Object call(LuanState luan,Object[] args) { |
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38 LuanTable module = new LuanTable(); |
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39 try { |
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40 add( module, "File", LuanState.class, String.class ); |
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41 add( module, "read_console_line", String.class ); |
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42 |
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43 LuanTable stdin = new LuanTable(); |
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44 stdin.put( "read_text", new LuanJavaFunction( |
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45 IoLib.class.getMethod( "stdin_read_text" ), null |
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46 ) ); |
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47 stdin.put( "read_binary", new LuanJavaFunction( |
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48 IoLib.class.getMethod( "stdin_read_binary" ), null |
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49 ) ); |
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50 stdin.put( "read_lines", new LuanJavaFunction( |
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51 IoLib.class.getMethod( "stdin_read_lines" ), null |
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52 ) ); |
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53 stdin.put( "read_blocks", new LuanJavaFunction( |
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54 IoLib.class.getMethod( "stdin_read_blocks", Integer.class ), null |
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55 ) ); |
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56 module.put( "stdin", stdin ); |
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57 |
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58 add( module, "Socket", String.class, Integer.TYPE ); |
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59 add( module, "socket_server", Integer.TYPE ); |
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60 } catch(NoSuchMethodException e) { |
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61 throw new RuntimeException(e); |
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62 } |
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63 module.put( "stdout", textWriter(System.out) ); |
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64 module.put( "stderr", textWriter(System.err) ); |
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65 return module; |
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66 } |
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67 }; |
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68 |
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69 private static void add(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException { |
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70 t.put( method, new LuanJavaFunction(IoLib.class.getMethod(method,parameterTypes),null) ); |
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71 } |
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72 |
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73 |
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74 public static String stdin_read_text() throws IOException { |
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75 return Utils.readAll(new InputStreamReader(System.in)); |
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76 } |
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77 |
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78 public static byte[] stdin_read_binary() throws IOException { |
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79 return Utils.readAll(System.in); |
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80 } |
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81 |
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82 public static LuanFunction stdin_read_lines() throws IOException { |
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83 return lines(new BufferedReader(new InputStreamReader(System.in))); |
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84 } |
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85 |
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86 public static LuanFunction stdin_read_blocks(Integer blockSize) throws IOException { |
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87 int n = blockSize!=null ? blockSize : Utils.bufSize; |
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88 return blocks(System.in,n); |
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89 } |
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90 |
118
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91 public static String read_console_line(String prompt) throws IOException { |
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92 if( prompt==null ) |
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93 prompt = "> "; |
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94 return System.console().readLine(prompt); |
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95 } |
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96 |
115
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97 |
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98 public interface LuanWriter { |
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99 public void write(LuanState luan,Object... args) throws LuanException, IOException; |
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100 public void close() throws IOException; |
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101 } |
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102 |
122
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103 public static LuanTable textWriter(final PrintStream out) { |
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104 LuanWriter luanWriter = new LuanWriter() { |
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105 |
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106 public void write(LuanState luan,Object... args) throws LuanException { |
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107 for( Object obj : args ) { |
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108 out.print( luan.toString(obj) ); |
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109 } |
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110 } |
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111 |
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112 public void close() { |
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113 out.close(); |
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114 } |
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115 }; |
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116 return writer(luanWriter); |
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117 } |
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118 |
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119 public static LuanTable textWriter(final Writer out) { |
115
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120 LuanWriter luanWriter = new LuanWriter() { |
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121 |
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122 public void write(LuanState luan,Object... args) throws LuanException, IOException { |
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123 for( Object obj : args ) { |
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124 out.write( luan.toString(obj) ); |
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125 } |
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126 } |
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127 |
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128 public void close() throws IOException { |
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129 out.close(); |
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130 } |
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131 }; |
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132 return writer(luanWriter); |
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133 } |
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134 |
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135 private static LuanTable writer(LuanWriter luanWriter) { |
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136 LuanTable writer = new LuanTable(); |
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137 try { |
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138 writer.put( "write", new LuanJavaFunction( |
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139 LuanWriter.class.getMethod( "write", LuanState.class, new Object[0].getClass() ), luanWriter |
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140 ) ); |
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141 writer.put( "close", new LuanJavaFunction( |
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142 LuanWriter.class.getMethod( "close" ), luanWriter |
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143 ) ); |
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144 } catch(NoSuchMethodException e) { |
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145 throw new RuntimeException(e); |
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146 } |
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147 return writer; |
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148 } |
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149 |
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150 |
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151 public static LuanTable binaryWriter(final OutputStream out) { |
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152 LuanTable writer = new LuanTable(); |
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153 try { |
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154 writer.put( "write", new LuanJavaFunction( |
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155 OutputStream.class.getMethod( "write", new byte[0].getClass() ), out |
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156 ) ); |
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157 writer.put( "close", new LuanJavaFunction( |
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158 OutputStream.class.getMethod( "close" ), out |
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159 ) ); |
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160 } catch(NoSuchMethodException e) { |
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161 throw new RuntimeException(e); |
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162 } |
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163 return writer; |
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164 } |
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165 |
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166 static LuanFunction lines(final BufferedReader in) { |
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167 return new LuanFunction() { |
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168 @Override public Object call(LuanState luan,Object[] args) throws LuanException { |
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169 try { |
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170 if( args.length > 0 ) { |
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171 if( args.length > 1 || !"close".equals(args[0]) ) |
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172 throw luan.exception( "the only argument allowed is 'close'" ); |
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173 in.close(); |
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174 return null; |
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175 } |
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176 String rtn = in.readLine(); |
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177 if( rtn==null ) |
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178 in.close(); |
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179 return rtn; |
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180 } catch(IOException e) { |
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181 throw luan.exception(e); |
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182 } |
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183 } |
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184 }; |
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185 } |
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186 |
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187 static LuanFunction blocks(final InputStream in,final int blockSize) { |
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188 return new LuanFunction() { |
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189 final byte[] a = new byte[blockSize]; |
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190 |
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191 @Override public Object call(LuanState luan,Object[] args) throws LuanException { |
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192 try { |
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193 if( args.length > 0 ) { |
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194 if( args.length > 1 || !"close".equals(args[0]) ) |
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195 throw luan.exception( "the only argument allowed is 'close'" ); |
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196 in.close(); |
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197 return null; |
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198 } |
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199 if( in.read(a) == -1 ) { |
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200 in.close(); |
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201 return null; |
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202 } |
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203 return a; |
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204 } catch(IOException e) { |
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205 throw luan.exception(e); |
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206 } |
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207 } |
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208 }; |
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209 } |
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210 |
125
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211 |
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212 |
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213 public static abstract class LuanIn { |
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214 abstract InputStream inputStream() throws IOException; |
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215 public abstract String to_string(); |
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216 |
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217 public String read_text() throws IOException { |
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218 Reader in = new InputStreamReader(inputStream()); |
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219 String s = Utils.readAll(in); |
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220 in.close(); |
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221 return s; |
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222 } |
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223 |
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224 public byte[] read_binary() throws IOException { |
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225 InputStream in = inputStream(); |
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226 byte[] a = Utils.readAll(in); |
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227 in.close(); |
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228 return a; |
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229 } |
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230 |
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231 public LuanFunction read_lines() throws IOException { |
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232 return lines(new BufferedReader(new InputStreamReader(inputStream()))); |
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233 } |
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234 |
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235 public LuanFunction read_blocks(Integer blockSize) throws IOException { |
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236 int n = blockSize!=null ? blockSize : Utils.bufSize; |
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237 return blocks(inputStream(),n); |
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238 } |
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239 |
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240 LuanTable table() { |
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241 LuanTable tbl = new LuanTable(); |
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242 try { |
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243 tbl.put( "to_string", new LuanJavaFunction( |
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244 LuanIn.class.getMethod( "to_string" ), this |
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245 ) ); |
125
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246 tbl.put( "read_text", new LuanJavaFunction( |
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247 LuanIn.class.getMethod( "read_text" ), this |
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248 ) ); |
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249 tbl.put( "read_binary", new LuanJavaFunction( |
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250 LuanIn.class.getMethod( "read_binary" ), this |
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251 ) ); |
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252 tbl.put( "read_lines", new LuanJavaFunction( |
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253 LuanIn.class.getMethod( "read_lines" ), this |
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254 ) ); |
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255 tbl.put( "read_blocks", new LuanJavaFunction( |
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256 LuanIn.class.getMethod( "read_blocks", Integer.class ), this |
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257 ) ); |
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258 } catch(NoSuchMethodException e) { |
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259 throw new RuntimeException(e); |
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260 } |
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261 return tbl; |
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262 } |
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263 } |
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264 |
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265 public static abstract class LuanIO extends LuanIn { |
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266 abstract OutputStream outputStream() throws IOException; |
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267 |
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268 public void write(LuanState luan,Object obj) throws LuanException, IOException { |
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269 if( obj instanceof String ) { |
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270 String s = (String)obj; |
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271 Writer out = new OutputStreamWriter(outputStream()); |
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272 out.write(s); |
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273 out.close(); |
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274 return; |
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275 } |
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276 if( obj instanceof byte[] ) { |
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277 byte[] a = (byte[])obj; |
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278 OutputStream out = outputStream(); |
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279 Utils.copyAll(new ByteArrayInputStream(a),out); |
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280 out.close(); |
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281 return; |
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282 } |
130
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283 throw luan.exception( "bad argument #1 to 'write' (string or binary expected)" ); |
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284 } |
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285 |
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286 public LuanTable text_writer() throws IOException { |
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287 return textWriter(new BufferedWriter(new OutputStreamWriter(outputStream()))); |
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288 } |
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289 |
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290 public LuanTable binary_writer() throws IOException { |
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291 return binaryWriter(new BufferedOutputStream(outputStream())); |
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292 } |
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293 |
129
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294 @Override LuanTable table() { |
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295 LuanTable tbl = super.table(); |
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296 try { |
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297 tbl.put( "write", new LuanJavaFunction( |
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298 LuanIO.class.getMethod( "write", LuanState.class, Object.class ), this |
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299 ) ); |
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300 tbl.put( "text_writer", new LuanJavaFunction( |
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301 LuanIO.class.getMethod( "text_writer" ), this |
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302 ) ); |
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303 tbl.put( "binary_writer", new LuanJavaFunction( |
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304 LuanIO.class.getMethod( "binary_writer" ), this |
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305 ) ); |
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306 } catch(NoSuchMethodException e) { |
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307 throw new RuntimeException(e); |
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308 } |
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309 return tbl; |
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310 } |
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311 } |
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312 |
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313 public static final class LuanUrl extends LuanIn { |
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314 private final URL url; |
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315 |
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316 public LuanUrl(String s) throws MalformedURLException { |
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317 this.url = new URL(s); |
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318 } |
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319 |
144
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320 @Override InputStream inputStream() throws IOException { |
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321 return url.openStream(); |
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322 } |
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323 |
147
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324 @Override public String to_string() { |
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325 return url.toString(); |
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326 } |
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327 } |
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328 |
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329 public static final class LuanFile extends LuanIO { |
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330 private final File file; |
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331 |
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332 public LuanFile(String name) { |
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333 this(new File(name)); |
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334 } |
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335 |
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336 public LuanFile(File file) { |
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337 this.file = file; |
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338 } |
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339 |
144
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340 @Override InputStream inputStream() throws IOException { |
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341 return new FileInputStream(file); |
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342 } |
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343 |
144
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344 @Override OutputStream outputStream() throws IOException { |
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345 return new FileOutputStream(file); |
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346 } |
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347 |
147
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348 @Override public String to_string() { |
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349 return file.toString(); |
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350 } |
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351 |
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352 public LuanTable child(String name) { |
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353 return new LuanFile(new File(file,name)).table(); |
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354 } |
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355 |
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356 public LuanTable children() { |
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357 File[] files = file.listFiles(); |
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358 if( files==null ) |
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359 return null; |
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360 LuanTable list = new LuanTable(); |
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361 for( File f : files ) { |
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362 list.add(new LuanFile(f).table()); |
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363 } |
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364 return list; |
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365 } |
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366 |
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367 public boolean exists() { |
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368 return Utils.exists(file); |
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369 } |
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370 |
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371 @Override LuanTable table() { |
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372 LuanTable tbl = super.table(); |
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373 try { |
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374 tbl.put( "name", new LuanJavaFunction( |
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375 File.class.getMethod( "getName" ), file |
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376 ) ); |
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377 tbl.put( "exists", new LuanJavaFunction( |
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378 LuanFile.class.getMethod( "exists" ), this |
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379 ) ); |
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380 tbl.put( "is_directory", new LuanJavaFunction( |
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381 File.class.getMethod( "isDirectory" ), file |
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382 ) ); |
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383 tbl.put( "is_file", new LuanJavaFunction( |
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384 File.class.getMethod( "isFile" ), file |
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385 ) ); |
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386 tbl.put( "delete", new LuanJavaFunction( |
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387 File.class.getMethod( "delete" ), file |
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388 ) ); |
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389 tbl.put( "mkdir", new LuanJavaFunction( |
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390 File.class.getMethod( "mkdir" ), file |
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391 ) ); |
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392 tbl.put( "mkdirs", new LuanJavaFunction( |
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393 File.class.getMethod( "mkdirs" ), file |
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394 ) ); |
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395 tbl.put( "last_modified", new LuanJavaFunction( |
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396 File.class.getMethod( "lastModified" ), file |
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397 ) ); |
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398 tbl.put( "child", new LuanJavaFunction( |
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399 LuanFile.class.getMethod( "child", String.class ), this |
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400 ) ); |
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401 tbl.put( "children", new LuanJavaFunction( |
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402 LuanFile.class.getMethod( "children" ), this |
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403 ) ); |
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404 } catch(NoSuchMethodException e) { |
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405 throw new RuntimeException(e); |
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406 } |
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407 return tbl; |
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408 } |
125
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409 } |
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410 |
143
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411 public static LuanIn luanIo(LuanState luan,String name) throws LuanException { |
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412 if( Utils.isFile(name) ) |
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413 return new LuanFile(name); |
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414 String url = Utils.toUrl(name); |
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415 if( url != null ) { |
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416 try { |
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417 return new LuanUrl(url); |
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418 } catch(MalformedURLException e) { |
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419 throw new RuntimeException(e); |
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420 } |
143
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421 } |
164
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422 throw luan.exception( "file '"+name+"' not found" ); |
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423 } |
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424 |
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425 public static LuanTable File(LuanState luan,String name) throws LuanException { |
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426 return luanIo(luan,name).table(); |
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427 } |
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428 |
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429 public static final class LuanSocket extends LuanIO { |
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430 private final Socket socket; |
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431 |
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432 public LuanSocket(String host,int port) throws IOException { |
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433 this(new Socket(host,port)); |
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434 } |
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435 |
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436 public LuanSocket(Socket socket) throws IOException { |
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437 this.socket = socket; |
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438 } |
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439 |
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440 @Override InputStream inputStream() throws IOException { |
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441 return socket.getInputStream(); |
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442 } |
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443 |
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444 @Override OutputStream outputStream() throws IOException { |
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445 return socket.getOutputStream(); |
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446 } |
129
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447 |
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448 @Override public String to_string() { |
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449 return socket.toString(); |
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450 } |
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451 |
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452 public LuanTable Pickle_client(LuanState luan) throws IOException { |
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453 DataInputStream in = new DataInputStream(new BufferedInputStream(inputStream())); |
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454 DataOutputStream out = new DataOutputStream(new BufferedOutputStream(outputStream())); |
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455 return new PickleClient(luan,in,out).table(); |
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456 } |
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457 |
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458 public void run_pickle_server(LuanState luan) throws IOException { |
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459 DataInputStream in = new DataInputStream(new BufferedInputStream(inputStream())); |
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460 DataOutputStream out = new DataOutputStream(new BufferedOutputStream(outputStream())); |
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461 new PickleServer(luan,in,out).run(); |
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462 } |
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463 |
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464 @Override LuanTable table() { |
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465 LuanTable tbl = super.table(); |
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466 try { |
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467 tbl.put( "Pickle_client", new LuanJavaFunction( |
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468 LuanSocket.class.getMethod( "Pickle_client", LuanState.class ), this |
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469 ) ); |
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470 tbl.put( "run_pickle_server", new LuanJavaFunction( |
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471 LuanSocket.class.getMethod( "run_pickle_server", LuanState.class ), this |
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472 ) ); |
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473 } catch(NoSuchMethodException e) { |
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474 throw new RuntimeException(e); |
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475 } |
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476 return tbl; |
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477 } |
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478 } |
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479 |
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480 public static LuanTable Socket(String host,int port) throws IOException { |
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481 return new LuanSocket(host,port).table(); |
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482 } |
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483 |
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484 public static LuanFunction socket_server(int port) throws IOException { |
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485 final ServerSocket ss = new ServerSocket(port); |
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486 return new LuanFunction() { |
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487 @Override public Object call(LuanState luan,Object[] args) throws LuanException { |
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488 try { |
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489 if( args.length > 0 ) { |
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490 if( args.length > 1 || !"close".equals(args[0]) ) |
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491 throw luan.exception( "the only argument allowed is 'close'" ); |
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492 ss.close(); |
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493 return null; |
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494 } |
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495 return new LuanSocket(ss.accept()).table(); |
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496 } catch(IOException e) { |
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497 throw luan.exception(e); |
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498 } |
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499 } |
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500 }; |
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501 } |
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502 |
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503 private void IoLib() {} // never |
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504 } |