Mercurial Hosting > luan
annotate core/src/luan/modules/IoLuan.java @ 301:a6bf8ff720f8
add java security
git-svn-id: https://luan-java.googlecode.com/svn/trunk@302 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Wed, 17 Dec 2014 12:35:57 +0000 |
parents | a74559240b4f |
children | 9e9bb358b2df |
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1 package luan.modules; |
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2 |
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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.BufferedReader; |
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9 import java.io.BufferedWriter; |
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10 import java.io.BufferedInputStream; |
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11 import java.io.BufferedOutputStream; |
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12 import java.io.File; |
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13 import java.io.FileInputStream; |
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14 import java.io.FileOutputStream; |
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15 import java.io.InputStreamReader; |
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16 import java.io.OutputStreamWriter; |
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17 import java.io.ByteArrayInputStream; |
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18 import java.io.DataInputStream; |
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19 import java.io.DataOutputStream; |
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20 import java.io.IOException; |
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21 import java.io.FileNotFoundException; |
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22 import java.net.URL; |
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23 import java.net.Socket; |
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24 import java.net.ServerSocket; |
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25 import java.net.MalformedURLException; |
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26 import java.util.List; |
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27 import java.util.ArrayList; |
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28 import luan.Luan; |
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29 import luan.LuanState; |
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30 import luan.LuanTable; |
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31 import luan.LuanFunction; |
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32 import luan.LuanJavaFunction; |
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33 import luan.LuanException; |
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34 |
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35 |
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36 public final class IoLuan { |
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37 |
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38 private static void add(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException { |
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39 t.put( method, new LuanJavaFunction(IoLuan.class.getMethod(method,parameterTypes),null) ); |
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40 } |
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41 |
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42 public static String read_console_line(String prompt) throws IOException { |
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43 if( prompt==null ) |
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44 prompt = "> "; |
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45 return System.console().readLine(prompt); |
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46 } |
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47 |
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48 |
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49 public interface LuanWriter { |
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50 public void write(LuanState luan,Object... args) throws LuanException, IOException; |
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51 public void close() throws IOException; |
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52 } |
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53 |
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54 public static LuanTable textWriter(final PrintStream out) { |
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55 LuanWriter luanWriter = new LuanWriter() { |
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56 |
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57 public void write(LuanState luan,Object... args) throws LuanException { |
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58 for( Object obj : args ) { |
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59 out.print( luan.toString(obj) ); |
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60 } |
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61 } |
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62 |
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63 public void close() { |
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64 out.close(); |
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65 } |
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66 }; |
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67 return writer(luanWriter); |
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68 } |
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69 |
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70 public static LuanTable textWriter(final Writer out) { |
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71 LuanWriter luanWriter = new LuanWriter() { |
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72 |
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73 public void write(LuanState luan,Object... args) throws LuanException, IOException { |
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74 for( Object obj : args ) { |
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75 out.write( luan.toString(obj) ); |
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76 } |
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77 } |
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78 |
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79 public void close() throws IOException { |
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80 out.close(); |
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81 } |
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82 }; |
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83 return writer(luanWriter); |
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84 } |
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85 |
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86 private static LuanTable writer(LuanWriter luanWriter) { |
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87 LuanTable writer = Luan.newTable(); |
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88 try { |
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89 writer.put( "write", new LuanJavaFunction( |
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90 LuanWriter.class.getMethod( "write", LuanState.class, new Object[0].getClass() ), luanWriter |
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91 ) ); |
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92 writer.put( "close", new LuanJavaFunction( |
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93 LuanWriter.class.getMethod( "close" ), luanWriter |
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94 ) ); |
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95 } catch(NoSuchMethodException e) { |
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96 throw new RuntimeException(e); |
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97 } |
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98 return writer; |
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99 } |
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100 |
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101 |
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102 public static LuanTable binaryWriter(final OutputStream out) { |
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103 LuanTable writer = Luan.newTable(); |
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104 try { |
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105 writer.put( "write", new LuanJavaFunction( |
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106 OutputStream.class.getMethod( "write", new byte[0].getClass() ), out |
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107 ) ); |
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108 writer.put( "close", new LuanJavaFunction( |
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109 OutputStream.class.getMethod( "close" ), out |
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110 ) ); |
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111 } catch(NoSuchMethodException e) { |
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112 throw new RuntimeException(e); |
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113 } |
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114 return writer; |
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115 } |
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116 |
116
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117 static LuanFunction lines(final BufferedReader in) { |
115
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118 return new LuanFunction() { |
116
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119 @Override public Object call(LuanState luan,Object[] args) throws LuanException { |
115
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120 try { |
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121 if( args.length > 0 ) { |
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122 if( args.length > 1 || !"close".equals(args[0]) ) |
130
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123 throw luan.exception( "the only argument allowed is 'close'" ); |
115
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124 in.close(); |
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125 return null; |
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126 } |
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127 String rtn = in.readLine(); |
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128 if( rtn==null ) |
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129 in.close(); |
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130 return rtn; |
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131 } catch(IOException e) { |
130
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132 throw luan.exception(e); |
115
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133 } |
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134 } |
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135 }; |
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136 } |
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137 |
116
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138 static LuanFunction blocks(final InputStream in,final int blockSize) { |
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139 return new LuanFunction() { |
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140 final byte[] a = new byte[blockSize]; |
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141 |
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142 @Override public Object call(LuanState luan,Object[] args) throws LuanException { |
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143 try { |
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144 if( args.length > 0 ) { |
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145 if( args.length > 1 || !"close".equals(args[0]) ) |
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146 throw luan.exception( "the only argument allowed is 'close'" ); |
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147 in.close(); |
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148 return null; |
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149 } |
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150 if( in.read(a) == -1 ) { |
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151 in.close(); |
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152 return null; |
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153 } |
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154 return a; |
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155 } catch(IOException e) { |
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156 throw luan.exception(e); |
116
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157 } |
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158 } |
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159 }; |
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160 } |
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161 |
125
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162 |
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163 |
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164 public static abstract class LuanIn { |
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165 abstract InputStream inputStream() throws IOException; |
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166 public abstract String to_string(); |
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167 |
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168 public String read_text() throws IOException { |
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169 Reader in = new InputStreamReader(inputStream()); |
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170 String s = Utils.readAll(in); |
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171 in.close(); |
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172 return s; |
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173 } |
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174 |
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175 public byte[] read_binary() throws IOException { |
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176 InputStream in = inputStream(); |
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177 byte[] a = Utils.readAll(in); |
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178 in.close(); |
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179 return a; |
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180 } |
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181 |
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182 public LuanFunction read_lines() throws IOException { |
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183 return lines(new BufferedReader(new InputStreamReader(inputStream()))); |
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184 } |
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185 |
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186 public LuanFunction read_blocks(Integer blockSize) throws IOException { |
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187 int n = blockSize!=null ? blockSize : Utils.bufSize; |
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188 return blocks(inputStream(),n); |
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189 } |
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190 |
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191 public boolean exists() throws IOException { |
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192 try { |
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193 inputStream().close(); |
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194 return true; |
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195 } catch(FileNotFoundException e) { |
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196 return false; |
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197 } |
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198 } |
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199 |
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200 public LuanTable table() { |
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201 LuanTable tbl = Luan.newTable(); |
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202 try { |
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203 tbl.put( "to_string", new LuanJavaFunction( |
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204 LuanIn.class.getMethod( "to_string" ), this |
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205 ) ); |
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206 tbl.put( "read_text", new LuanJavaFunction( |
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207 LuanIn.class.getMethod( "read_text" ), this |
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208 ) ); |
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209 tbl.put( "read_binary", new LuanJavaFunction( |
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210 LuanIn.class.getMethod( "read_binary" ), this |
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211 ) ); |
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212 tbl.put( "read_lines", new LuanJavaFunction( |
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213 LuanIn.class.getMethod( "read_lines" ), this |
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214 ) ); |
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215 tbl.put( "read_blocks", new LuanJavaFunction( |
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216 LuanIn.class.getMethod( "read_blocks", Integer.class ), this |
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217 ) ); |
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218 tbl.put( "exists", new LuanJavaFunction( |
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219 LuanIn.class.getMethod( "exists" ), this |
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220 ) ); |
125
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221 } catch(NoSuchMethodException e) { |
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222 throw new RuntimeException(e); |
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223 } |
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224 return tbl; |
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225 } |
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226 } |
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227 |
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228 public static final LuanIn defaultStdin = new LuanIn() { |
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229 |
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230 @Override InputStream inputStream() { |
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231 return System.in; |
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232 } |
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233 |
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234 @Override public String to_string() { |
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235 return "<stdin>"; |
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236 } |
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237 |
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238 @Override public String read_text() throws IOException { |
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239 return Utils.readAll(new InputStreamReader(System.in)); |
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240 } |
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241 |
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242 @Override public byte[] read_binary() throws IOException { |
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243 return Utils.readAll(System.in); |
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244 } |
265
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245 |
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246 @Override public boolean exists() { |
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247 return true; |
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248 } |
261
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249 }; |
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250 |
125
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251 public static abstract class LuanIO extends LuanIn { |
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252 abstract OutputStream outputStream() throws IOException; |
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253 |
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254 public void write(LuanState luan,Object obj) throws LuanException, IOException { |
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255 if( obj instanceof String ) { |
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256 String s = (String)obj; |
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257 Writer out = new OutputStreamWriter(outputStream()); |
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258 out.write(s); |
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259 out.close(); |
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260 return; |
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261 } |
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262 if( obj instanceof byte[] ) { |
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263 byte[] a = (byte[])obj; |
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264 OutputStream out = outputStream(); |
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265 Utils.copyAll(new ByteArrayInputStream(a),out); |
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266 out.close(); |
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267 return; |
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268 } |
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269 throw luan.exception( "bad argument #1 to 'write' (string or binary expected)" ); |
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270 } |
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271 |
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272 public LuanTable text_writer() throws IOException { |
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273 return textWriter(new BufferedWriter(new OutputStreamWriter(outputStream()))); |
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274 } |
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275 |
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276 public LuanTable binary_writer() throws IOException { |
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277 return binaryWriter(new BufferedOutputStream(outputStream())); |
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278 } |
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279 |
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280 @Override public LuanTable table() { |
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281 LuanTable tbl = super.table(); |
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282 try { |
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283 tbl.put( "write", new LuanJavaFunction( |
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284 LuanIO.class.getMethod( "write", LuanState.class, Object.class ), this |
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285 ) ); |
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286 tbl.put( "text_writer", new LuanJavaFunction( |
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287 LuanIO.class.getMethod( "text_writer" ), this |
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288 ) ); |
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289 tbl.put( "binary_writer", new LuanJavaFunction( |
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290 LuanIO.class.getMethod( "binary_writer" ), this |
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291 ) ); |
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292 } catch(NoSuchMethodException e) { |
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293 throw new RuntimeException(e); |
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294 } |
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295 return tbl; |
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296 } |
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297 } |
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298 |
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299 public static final class LuanUrl extends LuanIn { |
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300 private final URL url; |
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301 |
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302 private LuanUrl(URL url) { |
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303 this.url = url; |
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304 } |
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305 |
144
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306 @Override InputStream inputStream() throws IOException { |
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307 return url.openStream(); |
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308 } |
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309 |
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310 @Override public String to_string() { |
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311 return url.toString(); |
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312 } |
283
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313 |
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314 public String post(String postS) throws IOException { |
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315 return new UrlCall(url).post(postS); |
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316 } |
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317 |
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318 @Override public LuanTable table() { |
283
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319 LuanTable tbl = super.table(); |
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320 try { |
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321 tbl.put( "post", new LuanJavaFunction( |
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322 LuanUrl.class.getMethod( "post", String.class ), this |
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323 ) ); |
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324 } catch(NoSuchMethodException e) { |
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325 throw new RuntimeException(e); |
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326 } |
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327 return tbl; |
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328 } |
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329 } |
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330 |
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331 public static final class LuanFile extends LuanIO { |
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332 private final File file; |
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333 |
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334 private LuanFile(LuanState luan,File file) throws LuanException { |
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335 this(file); |
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336 check(luan,"file:"+file.toString()); |
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337 } |
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338 |
202
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339 private LuanFile(File file) { |
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340 this.file = file; |
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341 } |
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342 |
144
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343 @Override InputStream inputStream() throws IOException { |
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344 return new FileInputStream(file); |
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345 } |
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346 |
144
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347 @Override OutputStream outputStream() throws IOException { |
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348 return new FileOutputStream(file); |
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349 } |
143
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350 |
147
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351 @Override public String to_string() { |
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352 return file.toString(); |
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353 } |
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354 |
203
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355 public LuanTable child(LuanState luan,String name) throws LuanException { |
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356 return new LuanFile(luan,new File(file,name)).table(); |
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357 } |
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358 |
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359 public LuanTable children(LuanState luan) throws LuanException { |
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360 File[] files = file.listFiles(); |
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361 if( files==null ) |
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362 return null; |
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363 LuanTable list = Luan.newTable(); |
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364 for( File f : files ) { |
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365 list.add(new LuanFile(luan,f).table()); |
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366 } |
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367 return list; |
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368 } |
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369 |
265
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370 @Override public boolean exists() { |
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371 return file.exists(); |
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372 } |
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373 |
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374 public boolean rename_to(String dest) { |
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375 return file.renameTo(new File(dest)); |
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376 } |
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377 |
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378 @Override public LuanTable table() { |
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379 LuanTable tbl = super.table(); |
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380 try { |
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381 tbl.put( "name", new LuanJavaFunction( |
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382 File.class.getMethod( "getName" ), file |
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383 ) ); |
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384 tbl.put( "is_directory", new LuanJavaFunction( |
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385 File.class.getMethod( "isDirectory" ), file |
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386 ) ); |
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387 tbl.put( "is_file", new LuanJavaFunction( |
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388 File.class.getMethod( "isFile" ), file |
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389 ) ); |
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390 tbl.put( "delete", new LuanJavaFunction( |
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391 File.class.getMethod( "delete" ), file |
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392 ) ); |
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393 tbl.put( "mkdir", new LuanJavaFunction( |
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394 File.class.getMethod( "mkdir" ), file |
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395 ) ); |
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396 tbl.put( "mkdirs", new LuanJavaFunction( |
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397 File.class.getMethod( "mkdirs" ), file |
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398 ) ); |
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399 tbl.put( "last_modified", new LuanJavaFunction( |
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400 File.class.getMethod( "lastModified" ), file |
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401 ) ); |
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402 tbl.put( "child", new LuanJavaFunction( |
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403 LuanFile.class.getMethod( "child", LuanState.class, String.class ), this |
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404 ) ); |
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405 tbl.put( "children", new LuanJavaFunction( |
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406 LuanFile.class.getMethod( "children", LuanState.class ), this |
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407 ) ); |
293
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408 tbl.put( "rename_to", new LuanJavaFunction( |
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409 LuanFile.class.getMethod( "rename_to", String.class ), this |
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410 ) ); |
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411 } catch(NoSuchMethodException e) { |
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412 throw new RuntimeException(e); |
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413 } |
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414 return tbl; |
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415 } |
125
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416 } |
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417 |
299
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418 public static LuanTable file(LuanState luan,String name) throws LuanException { |
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419 File file = new File(name); |
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420 return new LuanFile(file).table(); |
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421 } |
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422 |
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423 public static LuanTable classpath(LuanState luan,String name) throws LuanException { |
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424 if( name.contains("//") ) |
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425 return null; |
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426 String path = name; |
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427 check(luan,"classpath:"+path); |
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428 URL url; |
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429 if( !path.contains("#") ) { |
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430 url = ClassLoader.getSystemResource(path); |
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431 } else { |
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432 String[] a = path.split("#"); |
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433 url = ClassLoader.getSystemResource(a[0]); |
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434 if( url==null ) { |
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435 for( int i=1; i<a.length; i++ ) { |
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436 url = ClassLoader.getSystemResource(a[0]+"/"+a[i]); |
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437 if( url != null ) { |
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438 try { |
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439 url = new URL(url,"."); |
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440 } catch(MalformedURLException e) { |
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441 throw new RuntimeException(e); |
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442 } |
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443 break; |
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444 } |
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445 } |
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446 } |
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447 } |
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448 if( url != null ) |
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449 return new LuanUrl(url).table(); |
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450 |
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451 return null; |
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452 } |
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453 |
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454 private static LuanTable url(String url) throws IOException { |
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455 return new LuanUrl(new URL(url)).table(); |
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456 } |
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457 |
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458 public static LuanTable http(String path) throws IOException { |
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459 return url("http:"+path); |
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460 } |
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461 |
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462 public static LuanTable https(String path) throws IOException { |
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463 return url("https:"+path); |
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464 } |
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465 |
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466 public static LuanTable luan(LuanState luan,String path) throws LuanException { |
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467 return classpath( luan, "luan/modules/" + path ); |
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468 } |
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469 |
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470 public static LuanTable stdin(LuanState luan) throws LuanException { |
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471 LuanTable io = (LuanTable)PackageLuan.loaded(luan).get("luan:Io"); |
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472 return (LuanTable)io.get("stdin"); |
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473 } |
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474 |
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475 public static LuanTable newSchemes() { |
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476 LuanTable schemes = Luan.newTable(); |
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477 try { |
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478 add( schemes, "file", LuanState.class, String.class ); |
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479 add( schemes, "classpath", LuanState.class, String.class ); |
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480 add( schemes, "socket", LuanState.class, String.class ); |
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481 add( schemes, "http", String.class ); |
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482 add( schemes, "https", String.class ); |
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483 add( schemes, "luan", LuanState.class, String.class ); |
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484 add( schemes, "stdin", LuanState.class ); |
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485 } catch(NoSuchMethodException e) { |
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486 throw new RuntimeException(e); |
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487 } |
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488 return schemes; |
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489 } |
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490 |
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491 private static LuanTable schemes(LuanState luan) { |
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492 LuanTable t = (LuanTable)PackageLuan.loaded(luan).get("luan:Io"); |
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493 if( t == null ) |
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494 return newSchemes(); |
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495 t = (LuanTable)t.get("schemes"); |
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496 if( t == null ) |
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497 return newSchemes(); |
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498 return t; |
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499 } |
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500 |
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501 public static LuanTable Uri(LuanState luan,String name) throws LuanException { |
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502 int i = name.indexOf(':'); |
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503 if( i == -1 ) |
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504 throw luan.exception( "invalid Io name '"+name+"', missing scheme" ); |
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505 String scheme = name.substring(0,i); |
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506 String location = name.substring(i+1); |
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507 LuanTable schemes = schemes(luan); |
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508 LuanFunction opener = (LuanFunction)schemes.get(scheme); |
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509 if( opener == null ) |
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510 throw luan.exception( "invalid scheme '"+scheme+"' in '"+name+"'" ); |
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511 return (LuanTable)Luan.first(luan.call(opener,"<open \""+name+"\">",new Object[]{location})); |
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512 } |
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513 |
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514 public static final class LuanSocket extends LuanIO { |
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515 private final Socket socket; |
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516 |
202
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517 private LuanSocket(String host,int port) throws IOException { |
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518 this(new Socket(host,port)); |
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519 } |
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520 |
202
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521 private LuanSocket(Socket socket) throws IOException { |
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522 this.socket = socket; |
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523 } |
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524 |
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525 @Override InputStream inputStream() throws IOException { |
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526 return socket.getInputStream(); |
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527 } |
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528 |
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529 @Override OutputStream outputStream() throws IOException { |
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530 return socket.getOutputStream(); |
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531 } |
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532 |
147
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533 @Override public String to_string() { |
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534 return socket.toString(); |
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535 } |
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536 |
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537 public LuanTable Pickle_client(LuanState luan) throws IOException { |
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538 InputStream in = new BufferedInputStream(inputStream()); |
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539 OutputStream out = new BufferedOutputStream(outputStream()); |
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540 return new PickleClient(luan,in,out).table(); |
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541 } |
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542 |
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543 public void run_pickle_server(LuanState luan) throws IOException { |
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544 InputStream in = new BufferedInputStream(inputStream()); |
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545 OutputStream out = new BufferedOutputStream(outputStream()); |
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546 new PickleServer(luan,in,out).run(); |
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547 } |
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548 |
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549 @Override public LuanTable table() { |
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550 LuanTable tbl = super.table(); |
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551 try { |
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552 tbl.put( "Pickle_client", new LuanJavaFunction( |
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553 LuanSocket.class.getMethod( "Pickle_client", LuanState.class ), this |
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554 ) ); |
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555 tbl.put( "run_pickle_server", new LuanJavaFunction( |
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556 LuanSocket.class.getMethod( "run_pickle_server", LuanState.class ), this |
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557 ) ); |
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558 } catch(NoSuchMethodException e) { |
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559 throw new RuntimeException(e); |
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560 } |
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561 return tbl; |
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562 } |
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563 } |
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564 |
262
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565 public static LuanTable socket(LuanState luan,String name) throws LuanException, IOException { |
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566 int i = name.indexOf(':'); |
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567 if( i == -1 ) |
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568 throw luan.exception( "invalid socket '"+name+"', format is: <host>:<port>" ); |
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569 String host = name.substring(0,i); |
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570 String portStr = name.substring(i+1); |
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571 int port = Integer.parseInt(portStr); |
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572 return new LuanSocket(host,port).table(); |
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573 } |
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574 |
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575 public static LuanFunction socket_server(int port) throws IOException { |
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576 final ServerSocket ss = new ServerSocket(port); |
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577 return new LuanFunction() { |
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578 @Override public Object call(LuanState luan,Object[] args) throws LuanException { |
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579 try { |
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580 if( args.length > 0 ) { |
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581 if( args.length > 1 || !"close".equals(args[0]) ) |
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582 throw luan.exception( "the only argument allowed is 'close'" ); |
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583 ss.close(); |
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584 return null; |
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585 } |
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586 return new LuanSocket(ss.accept()).table(); |
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587 } catch(IOException e) { |
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588 throw luan.exception(e); |
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589 } |
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590 } |
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591 }; |
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592 } |
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593 |
203
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594 |
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595 // security |
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596 |
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597 public interface Security { |
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598 public void check(LuanState luan,String name) throws LuanException; |
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599 } |
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600 |
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601 private static String SECURITY_KEY = "Io.Security"; |
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602 |
301
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603 private static void check(LuanState luan,String name) throws LuanException { |
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604 Security s = (Security)luan.registry().get(SECURITY_KEY); |
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605 if( s!=null ) |
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606 s.check(luan,name); |
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607 } |
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608 |
204
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609 public static void setSecurity(LuanState luan,Security s) { |
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610 luan.registry().put(SECURITY_KEY,s); |
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611 } |
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612 |
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613 private void IoLuan() {} // never |
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614 } |