Mercurial Hosting > luan
annotate core/src/luan/modules/IoLuan.java @ 701:d0280c7fdc3a
add Io.ip()
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Wed, 04 May 2016 17:49:41 -0600 |
parents | ca169567ce07 |
children | 52ecb629a634 |
rev | line source |
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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.StringReader; |
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9 import java.io.BufferedReader; |
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10 import java.io.BufferedWriter; |
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11 import java.io.BufferedInputStream; |
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12 import java.io.BufferedOutputStream; |
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13 import java.io.File; |
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14 import java.io.FileInputStream; |
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15 import java.io.FileOutputStream; |
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16 import java.io.InputStreamReader; |
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17 import java.io.OutputStreamWriter; |
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18 import java.io.ByteArrayInputStream; |
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19 import java.io.DataInputStream; |
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20 import java.io.DataOutputStream; |
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21 import java.io.StringWriter; |
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22 import java.io.IOException; |
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23 import java.io.FileNotFoundException; |
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24 import java.net.URL; |
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25 import java.net.Socket; |
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26 import java.net.ServerSocket; |
701 | 27 import java.net.InetAddress; |
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28 import java.net.MalformedURLException; |
701 | 29 import java.net.UnknownHostException; |
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30 import java.util.List; |
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31 import java.util.ArrayList; |
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32 import luan.Luan; |
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33 import luan.LuanState; |
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34 import luan.LuanTable; |
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35 import luan.LuanFunction; |
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36 import luan.LuanJavaFunction; |
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37 import luan.LuanException; |
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38 |
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39 |
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40 public final class IoLuan { |
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41 |
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42 private static void add(LuanTable t,String method,Class... parameterTypes) throws NoSuchMethodException { |
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43 t.rawPut( method, new LuanJavaFunction(IoLuan.class.getMethod(method,parameterTypes),null) ); |
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44 } |
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45 |
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46 public static String read_console_line(String prompt) throws IOException { |
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47 if( prompt==null ) |
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48 prompt = "> "; |
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49 return System.console().readLine(prompt); |
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50 } |
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51 |
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52 |
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53 public interface LuanWriter { |
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54 public void write(LuanState luan,Object... args) throws LuanException, IOException; |
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55 public void close() throws IOException; |
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56 } |
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57 |
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58 public static LuanTable textWriter(final PrintStream out) { |
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59 LuanWriter luanWriter = new LuanWriter() { |
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60 |
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61 public void write(LuanState luan,Object... args) throws LuanException { |
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62 for( Object obj : args ) { |
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63 out.print( luan.toString(obj) ); |
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64 } |
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65 } |
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66 |
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67 public void close() { |
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68 out.close(); |
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69 } |
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70 }; |
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71 return writer(luanWriter); |
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72 } |
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73 |
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74 public static LuanTable textWriter(final Writer out) { |
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75 LuanWriter luanWriter = new LuanWriter() { |
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76 |
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77 public void write(LuanState luan,Object... args) throws LuanException, IOException { |
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78 for( Object obj : args ) { |
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79 out.write( luan.toString(obj) ); |
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80 } |
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81 } |
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82 |
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83 public void close() throws IOException { |
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84 out.close(); |
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85 } |
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86 }; |
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87 return writer(luanWriter); |
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88 } |
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89 |
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90 private static LuanTable writer(LuanWriter luanWriter) { |
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91 LuanTable writer = new LuanTable(); |
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92 try { |
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93 writer.rawPut( "write", new LuanJavaFunction( |
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94 LuanWriter.class.getMethod( "write", LuanState.class, new Object[0].getClass() ), luanWriter |
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95 ) ); |
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96 writer.rawPut( "close", new LuanJavaFunction( |
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97 LuanWriter.class.getMethod( "close" ), luanWriter |
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98 ) ); |
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99 } catch(NoSuchMethodException e) { |
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100 throw new RuntimeException(e); |
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101 } |
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102 return writer; |
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103 } |
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104 |
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105 |
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106 public static LuanTable binaryWriter(final OutputStream out) { |
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107 LuanTable writer = new LuanTable(); |
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108 try { |
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109 writer.rawPut( "write", new LuanJavaFunction( |
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110 OutputStream.class.getMethod( "write", new byte[0].getClass() ), out |
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111 ) ); |
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112 writer.rawPut( "close", new LuanJavaFunction( |
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113 OutputStream.class.getMethod( "close" ), out |
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114 ) ); |
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115 } catch(NoSuchMethodException e) { |
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116 throw new RuntimeException(e); |
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117 } |
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118 return writer; |
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119 } |
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120 |
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121 static LuanFunction lines(final BufferedReader in) { |
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122 return new LuanFunction() { |
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123 @Override public Object call(LuanState luan,Object[] args) throws LuanException { |
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124 try { |
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125 if( args.length > 0 ) { |
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126 if( args.length > 1 || !"close".equals(args[0]) ) |
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127 throw new LuanException( "the only argument allowed is 'close'" ); |
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128 in.close(); |
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129 return null; |
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130 } |
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131 String rtn = in.readLine(); |
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132 if( rtn==null ) |
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133 in.close(); |
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134 return rtn; |
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135 } catch(IOException e) { |
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136 throw new LuanException(e); |
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137 } |
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138 } |
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139 }; |
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140 } |
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141 |
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142 static LuanFunction blocks(final InputStream in,final int blockSize) { |
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143 return new LuanFunction() { |
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144 final byte[] a = new byte[blockSize]; |
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145 |
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146 @Override public Object call(LuanState luan,Object[] args) throws LuanException { |
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147 try { |
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148 if( args.length > 0 ) { |
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149 if( args.length > 1 || !"close".equals(args[0]) ) |
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150 throw new LuanException( "the only argument allowed is 'close'" ); |
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151 in.close(); |
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152 return null; |
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153 } |
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154 if( in.read(a) == -1 ) { |
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155 in.close(); |
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156 return null; |
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157 } |
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158 return a; |
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159 } catch(IOException e) { |
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160 throw new LuanException(e); |
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161 } |
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162 } |
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163 }; |
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164 } |
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165 |
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166 |
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167 |
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168 public static abstract class LuanIn { |
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169 abstract InputStream inputStream() throws IOException; |
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170 public abstract String to_string(); |
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171 |
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172 public Reader reader() throws IOException { |
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173 return new InputStreamReader(inputStream()); |
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174 } |
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175 |
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176 public String read_text() throws IOException { |
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177 Reader in = reader(); |
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178 String s = Utils.readAll(in); |
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179 in.close(); |
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180 return s; |
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181 } |
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182 |
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183 public byte[] read_binary() throws IOException { |
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184 InputStream in = inputStream(); |
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185 byte[] a = Utils.readAll(in); |
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186 in.close(); |
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187 return a; |
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188 } |
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189 |
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190 public LuanFunction read_lines() throws IOException { |
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191 return lines(new BufferedReader(reader())); |
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192 } |
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193 |
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194 public LuanFunction read_blocks(Integer blockSize) throws IOException { |
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195 int n = blockSize!=null ? blockSize : Utils.bufSize; |
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196 return blocks(inputStream(),n); |
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197 } |
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198 |
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199 public boolean exists() throws IOException { |
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200 try { |
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201 inputStream().close(); |
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202 return true; |
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203 } catch(FileNotFoundException e) { |
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204 return false; |
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205 } |
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206 } |
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207 |
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208 public LuanTable table() { |
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209 LuanTable tbl = new LuanTable(); |
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210 try { |
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211 tbl.rawPut( "java", this ); |
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212 tbl.rawPut( "to_string", new LuanJavaFunction( |
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213 LuanIn.class.getMethod( "to_string" ), this |
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214 ) ); |
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215 tbl.rawPut( "read_text", new LuanJavaFunction( |
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216 LuanIn.class.getMethod( "read_text" ), this |
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217 ) ); |
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218 tbl.rawPut( "read_binary", new LuanJavaFunction( |
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219 LuanIn.class.getMethod( "read_binary" ), this |
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220 ) ); |
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221 tbl.rawPut( "read_lines", new LuanJavaFunction( |
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222 LuanIn.class.getMethod( "read_lines" ), this |
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223 ) ); |
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224 tbl.rawPut( "read_blocks", new LuanJavaFunction( |
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225 LuanIn.class.getMethod( "read_blocks", Integer.class ), this |
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226 ) ); |
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227 tbl.rawPut( "exists", new LuanJavaFunction( |
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228 LuanIn.class.getMethod( "exists" ), this |
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229 ) ); |
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230 } catch(NoSuchMethodException e) { |
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231 throw new RuntimeException(e); |
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232 } |
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233 return tbl; |
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234 } |
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235 } |
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236 |
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237 public static final LuanIn defaultStdin = new LuanIn() { |
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238 |
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239 @Override InputStream inputStream() { |
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240 return System.in; |
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241 } |
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242 |
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243 @Override public String to_string() { |
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244 return "<stdin>"; |
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245 } |
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246 |
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247 @Override public String read_text() throws IOException { |
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248 return Utils.readAll(new InputStreamReader(System.in)); |
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249 } |
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250 |
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251 @Override public byte[] read_binary() throws IOException { |
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252 return Utils.readAll(System.in); |
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253 } |
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254 |
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255 @Override public boolean exists() { |
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256 return true; |
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257 } |
261
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258 }; |
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259 |
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260 public static abstract class LuanIO extends LuanIn { |
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261 abstract OutputStream outputStream() throws IOException; |
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262 |
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263 public void write(Object obj) throws LuanException, IOException { |
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264 if( obj instanceof String ) { |
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265 String s = (String)obj; |
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266 Writer out = new OutputStreamWriter(outputStream()); |
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267 out.write(s); |
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268 out.close(); |
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269 return; |
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270 } |
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271 if( obj instanceof byte[] ) { |
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272 byte[] a = (byte[])obj; |
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273 OutputStream out = outputStream(); |
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274 Utils.copyAll(new ByteArrayInputStream(a),out); |
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275 out.close(); |
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276 return; |
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277 } |
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278 throw new LuanException( "bad argument #1 to 'write' (string or binary expected)" ); |
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279 } |
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280 |
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281 public LuanTable text_writer() throws IOException { |
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282 return textWriter(new BufferedWriter(new OutputStreamWriter(outputStream()))); |
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283 } |
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284 |
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285 public LuanTable binary_writer() throws IOException { |
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286 return binaryWriter(new BufferedOutputStream(outputStream())); |
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287 } |
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288 |
297
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289 @Override public LuanTable table() { |
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290 LuanTable tbl = super.table(); |
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291 try { |
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292 tbl.rawPut( "write", new LuanJavaFunction( |
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293 LuanIO.class.getMethod( "write", Object.class ), this |
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294 ) ); |
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295 tbl.rawPut( "text_writer", new LuanJavaFunction( |
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296 LuanIO.class.getMethod( "text_writer" ), this |
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297 ) ); |
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298 tbl.rawPut( "binary_writer", new LuanJavaFunction( |
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299 LuanIO.class.getMethod( "binary_writer" ), this |
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300 ) ); |
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301 } catch(NoSuchMethodException e) { |
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302 throw new RuntimeException(e); |
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303 } |
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304 return tbl; |
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305 } |
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306 } |
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307 |
590 | 308 private static final LuanIO nullIO = new LuanIO() { |
309 private final InputStream in = new InputStream() { | |
310 @Override public int read() { | |
311 return -1; | |
312 } | |
313 }; | |
314 private final OutputStream out = new OutputStream() { | |
315 @Override public void write(int b) {} | |
316 }; | |
317 | |
318 @Override InputStream inputStream() { | |
319 return in; | |
320 } | |
321 | |
322 @Override OutputStream outputStream() { | |
323 return out; | |
324 } | |
325 | |
326 @Override public String to_string() { | |
327 return "<null>"; | |
328 } | |
329 | |
330 }; | |
331 | |
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332 public static final class LuanString extends LuanIO { |
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333 private String s; |
314
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334 |
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335 private LuanString(String s) { |
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336 this.s = s; |
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337 } |
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338 |
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339 @Override InputStream inputStream() { |
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340 throw new UnsupportedOperationException(); |
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341 } |
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342 |
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343 @Override OutputStream outputStream() { |
314
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344 throw new UnsupportedOperationException(); |
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345 } |
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346 |
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347 @Override public String to_string() { |
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348 return "<string>"; |
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349 } |
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350 |
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351 @Override public Reader reader() { |
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352 return new StringReader(s); |
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353 } |
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354 |
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355 @Override public String read_text() { |
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356 return s; |
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357 } |
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358 |
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359 @Override public boolean exists() { |
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360 return true; |
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361 } |
421
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362 |
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363 @Override public LuanTable text_writer() throws IOException { |
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364 LuanWriter luanWriter = new LuanWriter() { |
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365 private final Writer out = new StringWriter(); |
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366 |
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367 public void write(LuanState luan,Object... args) throws LuanException, IOException { |
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368 for( Object obj : args ) { |
575
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369 out.write( luan.toString(obj) ); |
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370 } |
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371 } |
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372 |
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373 public void close() throws IOException { |
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374 s = out.toString(); |
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375 } |
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376 }; |
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377 return writer(luanWriter); |
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378 } |
314
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379 } |
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380 |
125
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381 public static final class LuanUrl extends LuanIn { |
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382 private final URL url; |
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383 |
263
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384 private LuanUrl(URL url) { |
203
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385 this.url = url; |
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386 } |
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387 |
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388 @Override InputStream inputStream() throws IOException { |
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389 return url.openStream(); |
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390 } |
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391 |
147
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392 @Override public String to_string() { |
143
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393 return url.toString(); |
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394 } |
283
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395 |
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396 public String post(String postS) throws IOException { |
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397 return new UrlCall(url).post(postS); |
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398 } |
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399 |
297
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400 @Override public LuanTable table() { |
283
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401 LuanTable tbl = super.table(); |
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402 try { |
427
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403 tbl.rawPut( "post", new LuanJavaFunction( |
283
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404 LuanUrl.class.getMethod( "post", String.class ), this |
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405 ) ); |
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406 } catch(NoSuchMethodException e) { |
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407 throw new RuntimeException(e); |
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408 } |
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409 return tbl; |
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410 } |
125
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411 } |
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412 |
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413 public static final class LuanFile extends LuanIO { |
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414 private final File file; |
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415 |
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416 private LuanFile(LuanState luan,File file) throws LuanException { |
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417 this(file); |
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418 check(luan,"file:"+file.toString()); |
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419 } |
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420 |
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421 private LuanFile(File file) { |
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422 this.file = file; |
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423 } |
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424 |
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425 @Override InputStream inputStream() throws IOException { |
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426 return new FileInputStream(file); |
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427 } |
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428 |
144
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429 @Override OutputStream outputStream() throws IOException { |
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430 return new FileOutputStream(file); |
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431 } |
143
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432 |
147
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433 @Override public String to_string() { |
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434 return file.toString(); |
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435 } |
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436 |
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437 public LuanTable child(LuanState luan,String name) throws LuanException { |
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438 return new LuanFile(luan,new File(file,name)).table(); |
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439 } |
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440 |
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441 public LuanTable children(LuanState luan) throws LuanException { |
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442 File[] files = file.listFiles(); |
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443 if( files==null ) |
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444 return null; |
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445 LuanTable list = new LuanTable(); |
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446 for( File f : files ) { |
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447 list.rawPut(list.rawLength()+1,new LuanFile(luan,f).table()); |
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448 } |
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449 return list; |
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450 } |
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451 |
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452 public LuanTable parent(LuanState luan) throws LuanException, IOException { |
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453 File parent = file.getParentFile(); |
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454 if( parent==null ) |
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455 parent = file.getCanonicalFile().getParentFile(); |
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456 return new LuanFile(luan,parent).table(); |
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457 } |
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458 |
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459 @Override public boolean exists() { |
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460 return file.exists(); |
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461 } |
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462 |
293
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463 public boolean rename_to(String dest) { |
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464 return file.renameTo(new File(dest)); |
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465 } |
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466 |
310
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467 public LuanTable canonical(LuanState luan) throws LuanException, IOException { |
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468 return new LuanFile(luan,file.getCanonicalFile()).table(); |
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469 } |
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470 |
297
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remove PackageLuan.load_lib()
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471 @Override public LuanTable table() { |
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472 LuanTable tbl = super.table(); |
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473 try { |
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474 tbl.rawPut( "name", new LuanJavaFunction( |
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475 File.class.getMethod( "getName" ), file |
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476 ) ); |
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477 tbl.rawPut( "is_directory", new LuanJavaFunction( |
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478 File.class.getMethod( "isDirectory" ), file |
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479 ) ); |
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480 tbl.rawPut( "is_file", new LuanJavaFunction( |
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481 File.class.getMethod( "isFile" ), file |
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482 ) ); |
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483 tbl.rawPut( "delete", new LuanJavaFunction( |
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484 File.class.getMethod( "delete" ), file |
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485 ) ); |
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486 tbl.rawPut( "mkdir", new LuanJavaFunction( |
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487 File.class.getMethod( "mkdir" ), file |
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488 ) ); |
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489 tbl.rawPut( "mkdirs", new LuanJavaFunction( |
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490 File.class.getMethod( "mkdirs" ), file |
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491 ) ); |
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492 tbl.rawPut( "last_modified", new LuanJavaFunction( |
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493 File.class.getMethod( "lastModified" ), file |
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494 ) ); |
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495 tbl.rawPut( "child", new LuanJavaFunction( |
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496 LuanFile.class.getMethod( "child", LuanState.class, String.class ), this |
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497 ) ); |
427
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498 tbl.rawPut( "children", new LuanJavaFunction( |
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499 LuanFile.class.getMethod( "children", LuanState.class ), this |
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500 ) ); |
427
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501 tbl.rawPut( "parent", new LuanJavaFunction( |
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502 LuanFile.class.getMethod( "parent", LuanState.class ), this |
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503 ) ); |
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504 tbl.rawPut( "rename_to", new LuanJavaFunction( |
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505 LuanFile.class.getMethod( "rename_to", String.class ), this |
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506 ) ); |
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507 tbl.rawPut( "canonical", new LuanJavaFunction( |
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508 LuanFile.class.getMethod( "canonical", LuanState.class ), this |
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509 ) ); |
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510 } catch(NoSuchMethodException e) { |
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511 throw new RuntimeException(e); |
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512 } |
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513 return tbl; |
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514 } |
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515 } |
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516 |
590 | 517 public static LuanTable null_() { |
518 return nullIO.table(); | |
519 } | |
520 | |
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521 public static LuanTable string(String s) throws LuanException { |
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522 Utils.checkNotNull(s); |
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523 return new LuanString(s).table(); |
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524 } |
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525 |
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526 public static LuanTable file(LuanState luan,String name) throws LuanException { |
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527 File file = new File(name); |
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528 return new LuanFile(file).table(); |
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529 } |
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530 |
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531 public static LuanTable classpath(LuanState luan,String name) throws LuanException { |
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532 if( name.contains("//") ) |
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533 return null; |
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534 String path = name; |
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535 check(luan,"classpath:"+path); |
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536 URL url; |
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537 if( !path.contains("#") ) { |
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538 url = ClassLoader.getSystemResource(path); |
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539 } else { |
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540 String[] a = path.split("#"); |
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541 url = ClassLoader.getSystemResource(a[0]); |
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542 if( url==null ) { |
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543 for( int i=1; i<a.length; i++ ) { |
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544 url = ClassLoader.getSystemResource(a[0]+"/"+a[i]); |
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545 if( url != null ) { |
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546 try { |
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547 url = new URL(url,"."); |
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548 } catch(MalformedURLException e) { |
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549 throw new RuntimeException(e); |
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550 } |
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551 break; |
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552 } |
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553 } |
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554 } |
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555 } |
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556 if( url != null ) |
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557 return new LuanUrl(url).table(); |
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558 |
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559 return null; |
260
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560 } |
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561 |
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562 private static LuanTable url(String url) throws IOException { |
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563 return new LuanUrl(new URL(url)).table(); |
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564 } |
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565 |
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566 public static LuanTable http(String path) throws IOException { |
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567 return url("http:"+path); |
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568 } |
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569 |
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570 public static LuanTable https(String path) throws IOException { |
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571 return url("https:"+path); |
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572 } |
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573 |
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574 public static LuanTable luan(LuanState luan,String path) throws LuanException { |
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575 return classpath( luan, "luan/modules/" + path ); |
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576 } |
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577 |
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578 public static LuanTable stdin(LuanState luan) throws LuanException { |
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579 LuanTable io = (LuanTable)PackageLuan.require(luan,"luan:Io.luan"); |
575
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580 return (LuanTable)io.get(luan,"stdin"); |
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581 } |
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582 |
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583 public static LuanTable newSchemes() { |
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584 LuanTable schemes = new LuanTable(); |
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585 try { |
590 | 586 schemes.rawPut( "null", new LuanJavaFunction(IoLuan.class.getMethod("null_"),null) ); |
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587 add( schemes, "string", String.class ); |
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588 add( schemes, "file", LuanState.class, String.class ); |
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589 add( schemes, "classpath", LuanState.class, String.class ); |
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590 add( schemes, "socket", String.class ); |
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591 add( schemes, "http", String.class ); |
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592 add( schemes, "https", String.class ); |
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593 add( schemes, "luan", LuanState.class, String.class ); |
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594 add( schemes, "stdin", LuanState.class ); |
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595 } catch(NoSuchMethodException e) { |
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596 throw new RuntimeException(e); |
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597 } |
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598 return schemes; |
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599 } |
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600 |
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601 private static LuanTable schemes(LuanState luan) throws LuanException { |
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602 LuanTable t = (LuanTable)PackageLuan.loaded(luan).rawGet("luan:Io.luan"); |
260
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603 if( t == null ) |
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604 return newSchemes(); |
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605 t = (LuanTable)t.get(luan,"schemes"); |
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606 if( t == null ) |
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607 return newSchemes(); |
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608 return t; |
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609 } |
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610 |
693
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611 public static LuanTable uri(LuanState luan,String name) throws LuanException { |
260
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612 int i = name.indexOf(':'); |
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613 if( i == -1 ) |
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614 throw new LuanException( "invalid Io.uri name '"+name+"', missing scheme" ); |
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615 String scheme = name.substring(0,i); |
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616 String location = name.substring(i+1); |
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617 LuanTable schemes = schemes(luan); |
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618 LuanFunction opener = (LuanFunction)schemes.get(luan,scheme); |
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619 if( opener == null ) |
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620 throw new LuanException( "invalid scheme '"+scheme+"' in '"+name+"'" ); |
693
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621 return (LuanTable)Luan.first(opener.call(luan,new Object[]{location})); |
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622 } |
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623 |
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624 public static final class LuanSocket extends LuanIO { |
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625 private final Socket socket; |
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626 |
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627 private LuanSocket(String host,int port) throws IOException { |
125
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628 this(new Socket(host,port)); |
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629 } |
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630 |
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631 private LuanSocket(Socket socket) throws IOException { |
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632 this.socket = socket; |
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633 } |
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634 |
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635 @Override InputStream inputStream() throws IOException { |
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636 return socket.getInputStream(); |
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637 } |
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638 |
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639 @Override OutputStream outputStream() throws IOException { |
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640 return socket.getOutputStream(); |
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641 } |
129
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642 |
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643 @Override public String to_string() { |
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644 return socket.toString(); |
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645 } |
125
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646 } |
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647 |
646
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648 public static LuanTable socket(String name) throws LuanException, IOException { |
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649 int i = name.indexOf(':'); |
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650 if( i == -1 ) |
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651 throw new LuanException( "invalid socket '"+name+"', format is: <host>:<port>" ); |
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652 String host = name.substring(0,i); |
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653 String portStr = name.substring(i+1); |
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654 int port = Integer.parseInt(portStr); |
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655 return new LuanSocket(host,port).table(); |
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656 } |
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657 |
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658 public static LuanFunction socket_server(int port) throws IOException { |
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659 final ServerSocket ss = new ServerSocket(port); |
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660 return new LuanFunction() { |
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661 @Override public Object call(LuanState luan,Object[] args) throws LuanException { |
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662 try { |
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663 if( args.length > 0 ) { |
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664 if( args.length > 1 || !"close".equals(args[0]) ) |
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665 throw new LuanException( "the only argument allowed is 'close'" ); |
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666 ss.close(); |
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667 return null; |
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668 } |
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669 return new LuanSocket(ss.accept()).table(); |
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670 } catch(IOException e) { |
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671 throw new LuanException(e); |
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672 } |
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673 } |
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674 }; |
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675 } |
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676 |
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677 |
701 | 678 public static String ip(String domain) { |
679 try { | |
680 return InetAddress.getByName(domain).getHostAddress(); | |
681 } catch(UnknownHostException e) { | |
682 return null; | |
683 } | |
684 } | |
685 | |
686 | |
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687 // security |
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688 |
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689 public interface Security { |
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690 public void check(LuanState luan,String name) throws LuanException; |
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691 } |
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692 |
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693 private static String SECURITY_KEY = "Io.Security"; |
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694 |
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695 private static void check(LuanState luan,String name) throws LuanException { |
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696 Security s = (Security)luan.registry().get(SECURITY_KEY); |
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697 if( s!=null ) |
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698 s.check(luan,name); |
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699 } |
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700 |
204
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701 public static void setSecurity(LuanState luan,Security s) { |
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702 luan.registry().put(SECURITY_KEY,s); |
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703 } |
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704 |
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rename *Lib.java to *Luan.java
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
167
diff
changeset
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705 private void IoLuan() {} // never |
115
eacf6ce1b47d
add IoLib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
706 } |