Mercurial Hosting > luan
annotate core/src/luan/modules/IoLuan.java @ 411:23b99a5039b5
remove Luan.newTable()
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Wed, 29 Apr 2015 16:05:02 -0600 |
parents | cd2924a1052c |
children | b31d614343e8 |
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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.IOException; |
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22 import java.io.FileNotFoundException; |
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23 import java.net.URL; |
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24 import java.net.Socket; |
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25 import java.net.ServerSocket; |
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26 import java.net.MalformedURLException; |
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27 import java.util.List; |
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28 import java.util.ArrayList; |
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29 import luan.Luan; |
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30 import luan.LuanState; |
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31 import luan.LuanTable; |
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32 import luan.LuanFunction; |
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33 import luan.LuanJavaFunction; |
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34 import luan.LuanException; |
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35 |
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36 |
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37 public final class IoLuan { |
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38 |
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39 private static void add(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException { |
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40 t.put( method, new LuanJavaFunction(IoLuan.class.getMethod(method,parameterTypes),null) ); |
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41 } |
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42 |
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43 public static String read_console_line(String prompt) throws IOException { |
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44 if( prompt==null ) |
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45 prompt = "> "; |
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46 return System.console().readLine(prompt); |
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47 } |
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48 |
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49 |
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50 public interface LuanWriter { |
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51 public void write(LuanState luan,Object... args) throws LuanException, IOException; |
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52 public void close() throws IOException; |
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53 } |
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54 |
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55 public static LuanTable textWriter(final PrintStream out) { |
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56 LuanWriter luanWriter = new LuanWriter() { |
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57 |
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58 public void write(LuanState luan,Object... args) throws LuanException { |
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59 for( Object obj : args ) { |
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60 out.print( luan.toString(obj) ); |
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61 } |
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62 } |
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63 |
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64 public void close() { |
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65 out.close(); |
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66 } |
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67 }; |
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68 return writer(luanWriter); |
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69 } |
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70 |
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71 public static LuanTable textWriter(final Writer out) { |
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72 LuanWriter luanWriter = new LuanWriter() { |
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73 |
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74 public void write(LuanState luan,Object... args) throws LuanException, IOException { |
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75 for( Object obj : args ) { |
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76 out.write( luan.toString(obj) ); |
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77 } |
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78 } |
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79 |
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80 public void close() throws IOException { |
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81 out.close(); |
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82 } |
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83 }; |
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84 return writer(luanWriter); |
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85 } |
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86 |
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87 private static LuanTable writer(LuanWriter luanWriter) { |
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88 LuanTable writer = new LuanTable(); |
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89 try { |
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90 writer.put( "write", new LuanJavaFunction( |
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91 LuanWriter.class.getMethod( "write", LuanState.class, new Object[0].getClass() ), luanWriter |
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92 ) ); |
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93 writer.put( "close", new LuanJavaFunction( |
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94 LuanWriter.class.getMethod( "close" ), luanWriter |
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95 ) ); |
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96 } catch(NoSuchMethodException e) { |
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97 throw new RuntimeException(e); |
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98 } |
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99 return writer; |
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100 } |
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101 |
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102 |
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103 public static LuanTable binaryWriter(final OutputStream out) { |
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104 LuanTable writer = new LuanTable(); |
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105 try { |
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106 writer.put( "write", new LuanJavaFunction( |
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107 OutputStream.class.getMethod( "write", new byte[0].getClass() ), out |
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108 ) ); |
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109 writer.put( "close", new LuanJavaFunction( |
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110 OutputStream.class.getMethod( "close" ), out |
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111 ) ); |
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112 } catch(NoSuchMethodException e) { |
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113 throw new RuntimeException(e); |
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114 } |
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115 return writer; |
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116 } |
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117 |
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118 static LuanFunction lines(final BufferedReader in) { |
115
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119 return new LuanFunction() { |
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120 @Override public Object call(LuanState luan,Object[] args) throws LuanException { |
115
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121 try { |
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122 if( args.length > 0 ) { |
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123 if( args.length > 1 || !"close".equals(args[0]) ) |
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124 throw luan.exception( "the only argument allowed is 'close'" ); |
115
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125 in.close(); |
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126 return null; |
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127 } |
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128 String rtn = in.readLine(); |
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129 if( rtn==null ) |
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130 in.close(); |
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131 return rtn; |
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132 } catch(IOException e) { |
130
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133 throw luan.exception(e); |
115
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134 } |
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135 } |
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136 }; |
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137 } |
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138 |
116
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139 static LuanFunction blocks(final InputStream in,final int blockSize) { |
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140 return new LuanFunction() { |
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141 final byte[] a = new byte[blockSize]; |
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142 |
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143 @Override public Object call(LuanState luan,Object[] args) throws LuanException { |
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144 try { |
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145 if( args.length > 0 ) { |
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146 if( args.length > 1 || !"close".equals(args[0]) ) |
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147 throw luan.exception( "the only argument allowed is 'close'" ); |
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148 in.close(); |
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149 return null; |
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150 } |
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151 if( in.read(a) == -1 ) { |
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152 in.close(); |
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153 return null; |
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154 } |
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155 return a; |
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156 } catch(IOException e) { |
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157 throw luan.exception(e); |
116
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158 } |
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159 } |
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160 }; |
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161 } |
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162 |
125
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163 |
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164 |
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165 public static abstract class LuanIn { |
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166 abstract InputStream inputStream() throws IOException; |
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167 public abstract String to_string(); |
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168 |
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169 public Reader reader() throws IOException { |
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170 return new InputStreamReader(inputStream()); |
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171 } |
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172 |
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173 public String read_text() throws IOException { |
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174 Reader in = reader(); |
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175 String s = Utils.readAll(in); |
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176 in.close(); |
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177 return s; |
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178 } |
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179 |
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180 public byte[] read_binary() throws IOException { |
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181 InputStream in = inputStream(); |
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182 byte[] a = Utils.readAll(in); |
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183 in.close(); |
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184 return a; |
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185 } |
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186 |
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187 public LuanFunction read_lines() throws IOException { |
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188 return lines(new BufferedReader(reader())); |
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189 } |
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190 |
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191 public LuanFunction read_blocks(Integer blockSize) throws IOException { |
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192 int n = blockSize!=null ? blockSize : Utils.bufSize; |
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193 return blocks(inputStream(),n); |
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194 } |
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195 |
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196 public boolean exists() throws IOException { |
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197 try { |
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198 inputStream().close(); |
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199 return true; |
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200 } catch(FileNotFoundException e) { |
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201 return false; |
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202 } |
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203 } |
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204 |
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205 public LuanTable table() { |
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206 LuanTable tbl = new LuanTable(); |
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207 try { |
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208 tbl.put( "to_string", new LuanJavaFunction( |
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209 LuanIn.class.getMethod( "to_string" ), this |
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210 ) ); |
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211 tbl.put( "read_text", new LuanJavaFunction( |
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212 LuanIn.class.getMethod( "read_text" ), this |
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213 ) ); |
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214 tbl.put( "read_binary", new LuanJavaFunction( |
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215 LuanIn.class.getMethod( "read_binary" ), this |
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216 ) ); |
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217 tbl.put( "read_lines", new LuanJavaFunction( |
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218 LuanIn.class.getMethod( "read_lines" ), this |
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219 ) ); |
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220 tbl.put( "read_blocks", new LuanJavaFunction( |
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221 LuanIn.class.getMethod( "read_blocks", Integer.class ), this |
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222 ) ); |
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223 tbl.put( "exists", new LuanJavaFunction( |
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224 LuanIn.class.getMethod( "exists" ), this |
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225 ) ); |
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226 } catch(NoSuchMethodException e) { |
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227 throw new RuntimeException(e); |
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228 } |
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229 return tbl; |
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230 } |
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231 } |
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232 |
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233 public static final LuanIn defaultStdin = new LuanIn() { |
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234 |
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235 @Override InputStream inputStream() { |
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236 return System.in; |
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237 } |
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238 |
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239 @Override public String to_string() { |
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240 return "<stdin>"; |
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241 } |
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242 |
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243 @Override public String read_text() throws IOException { |
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244 return Utils.readAll(new InputStreamReader(System.in)); |
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245 } |
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246 |
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247 @Override public byte[] read_binary() throws IOException { |
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248 return Utils.readAll(System.in); |
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249 } |
265
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250 |
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251 @Override public boolean exists() { |
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252 return true; |
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253 } |
261
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254 }; |
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255 |
125
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256 public static abstract class LuanIO extends LuanIn { |
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257 abstract OutputStream outputStream() throws IOException; |
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258 |
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259 public void write(LuanState luan,Object obj) throws LuanException, IOException { |
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260 if( obj instanceof String ) { |
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261 String s = (String)obj; |
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262 Writer out = new OutputStreamWriter(outputStream()); |
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263 out.write(s); |
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264 out.close(); |
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265 return; |
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266 } |
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267 if( obj instanceof byte[] ) { |
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268 byte[] a = (byte[])obj; |
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269 OutputStream out = outputStream(); |
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270 Utils.copyAll(new ByteArrayInputStream(a),out); |
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271 out.close(); |
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272 return; |
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273 } |
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274 throw luan.exception( "bad argument #1 to 'write' (string or binary expected)" ); |
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275 } |
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276 |
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277 public LuanTable text_writer() throws IOException { |
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278 return textWriter(new BufferedWriter(new OutputStreamWriter(outputStream()))); |
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279 } |
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280 |
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281 public LuanTable binary_writer() throws IOException { |
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282 return binaryWriter(new BufferedOutputStream(outputStream())); |
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283 } |
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284 |
297
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285 @Override public LuanTable table() { |
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286 LuanTable tbl = super.table(); |
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287 try { |
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288 tbl.put( "write", new LuanJavaFunction( |
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289 LuanIO.class.getMethod( "write", LuanState.class, Object.class ), this |
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290 ) ); |
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291 tbl.put( "text_writer", new LuanJavaFunction( |
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292 LuanIO.class.getMethod( "text_writer" ), this |
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293 ) ); |
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294 tbl.put( "binary_writer", new LuanJavaFunction( |
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295 LuanIO.class.getMethod( "binary_writer" ), this |
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296 ) ); |
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297 } catch(NoSuchMethodException e) { |
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298 throw new RuntimeException(e); |
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299 } |
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300 return tbl; |
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301 } |
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302 } |
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303 |
314
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304 public static final class LuanString extends LuanIn { |
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305 private final String s; |
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306 |
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307 private LuanString(String s) { |
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308 this.s = s; |
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309 } |
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310 |
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311 @Override InputStream inputStream() throws IOException { |
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312 throw new UnsupportedOperationException(); |
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313 } |
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314 |
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315 @Override public String to_string() { |
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316 return "<string>"; |
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317 } |
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318 |
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319 @Override public Reader reader() { |
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320 return new StringReader(s); |
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321 } |
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322 |
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323 @Override public String read_text() { |
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324 return s; |
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325 } |
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326 |
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327 @Override public boolean exists() { |
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328 return true; |
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329 } |
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330 } |
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331 |
125
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332 public static final class LuanUrl extends LuanIn { |
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333 private final URL url; |
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334 |
263
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335 private LuanUrl(URL url) { |
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336 this.url = url; |
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337 } |
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338 |
144
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339 @Override InputStream inputStream() throws IOException { |
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340 return url.openStream(); |
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341 } |
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342 |
147
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343 @Override public String to_string() { |
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344 return url.toString(); |
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345 } |
283
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346 |
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347 public String post(String postS) throws IOException { |
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348 return new UrlCall(url).post(postS); |
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349 } |
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350 |
297
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351 @Override public LuanTable table() { |
283
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352 LuanTable tbl = super.table(); |
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353 try { |
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354 tbl.put( "post", new LuanJavaFunction( |
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355 LuanUrl.class.getMethod( "post", String.class ), this |
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356 ) ); |
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357 } catch(NoSuchMethodException e) { |
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358 throw new RuntimeException(e); |
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359 } |
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360 return tbl; |
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361 } |
125
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362 } |
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363 |
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364 public static final class LuanFile extends LuanIO { |
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365 private final File file; |
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366 |
203
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367 private LuanFile(LuanState luan,File file) throws LuanException { |
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368 this(file); |
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369 check(luan,"file:"+file.toString()); |
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370 } |
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371 |
202
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372 private LuanFile(File file) { |
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373 this.file = file; |
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374 } |
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375 |
144
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376 @Override InputStream inputStream() throws IOException { |
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377 return new FileInputStream(file); |
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378 } |
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379 |
144
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380 @Override OutputStream outputStream() throws IOException { |
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381 return new FileOutputStream(file); |
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382 } |
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383 |
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384 @Override public String to_string() { |
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385 return file.toString(); |
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386 } |
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387 |
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388 public LuanTable child(LuanState luan,String name) throws LuanException { |
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389 return new LuanFile(luan,new File(file,name)).table(); |
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390 } |
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391 |
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392 public LuanTable children(LuanState luan) throws LuanException { |
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393 File[] files = file.listFiles(); |
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394 if( files==null ) |
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395 return null; |
411
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396 LuanTable list = new LuanTable(); |
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397 for( File f : files ) { |
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398 list.add(new LuanFile(luan,f).table()); |
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399 } |
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400 return list; |
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401 } |
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402 |
323
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403 public LuanTable parent(LuanState luan) throws LuanException, IOException { |
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404 File parent = file.getParentFile(); |
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405 if( parent==null ) |
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406 parent = file.getCanonicalFile().getParentFile(); |
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407 return new LuanFile(luan,parent).table(); |
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408 } |
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409 |
265
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410 @Override public boolean exists() { |
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411 return file.exists(); |
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412 } |
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413 |
293
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414 public boolean rename_to(String dest) { |
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415 return file.renameTo(new File(dest)); |
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416 } |
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417 |
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418 public LuanTable canonical(LuanState luan) throws LuanException, IOException { |
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419 return new LuanFile(luan,file.getCanonicalFile()).table(); |
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420 } |
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421 |
297
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remove PackageLuan.load_lib()
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422 @Override public LuanTable table() { |
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423 LuanTable tbl = super.table(); |
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424 try { |
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425 tbl.put( "name", new LuanJavaFunction( |
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426 File.class.getMethod( "getName" ), file |
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427 ) ); |
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428 tbl.put( "is_directory", new LuanJavaFunction( |
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429 File.class.getMethod( "isDirectory" ), file |
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430 ) ); |
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431 tbl.put( "is_file", new LuanJavaFunction( |
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432 File.class.getMethod( "isFile" ), file |
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433 ) ); |
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434 tbl.put( "delete", new LuanJavaFunction( |
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435 File.class.getMethod( "delete" ), file |
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436 ) ); |
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437 tbl.put( "mkdir", new LuanJavaFunction( |
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438 File.class.getMethod( "mkdir" ), file |
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439 ) ); |
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440 tbl.put( "mkdirs", new LuanJavaFunction( |
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441 File.class.getMethod( "mkdirs" ), file |
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442 ) ); |
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443 tbl.put( "last_modified", new LuanJavaFunction( |
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444 File.class.getMethod( "lastModified" ), file |
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445 ) ); |
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446 tbl.put( "child", new LuanJavaFunction( |
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447 LuanFile.class.getMethod( "child", LuanState.class, String.class ), this |
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448 ) ); |
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449 tbl.put( "children", new LuanJavaFunction( |
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450 LuanFile.class.getMethod( "children", LuanState.class ), this |
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451 ) ); |
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452 tbl.put( "parent", new LuanJavaFunction( |
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453 LuanFile.class.getMethod( "parent", LuanState.class ), this |
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454 ) ); |
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455 tbl.put( "rename_to", new LuanJavaFunction( |
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456 LuanFile.class.getMethod( "rename_to", String.class ), this |
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457 ) ); |
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458 tbl.put( "canonical", new LuanJavaFunction( |
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459 LuanFile.class.getMethod( "canonical", LuanState.class ), this |
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460 ) ); |
145
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461 } catch(NoSuchMethodException e) { |
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462 throw new RuntimeException(e); |
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463 } |
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464 return tbl; |
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465 } |
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466 } |
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467 |
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468 public static LuanTable string(LuanState luan,String s) throws LuanException { |
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469 Utils.checkNotNull(luan,s); |
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470 return new LuanString(s).table(); |
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471 } |
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472 |
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473 public static LuanTable file(LuanState luan,String name) throws LuanException { |
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474 File file = new File(name); |
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475 return new LuanFile(file).table(); |
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476 } |
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477 |
299
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478 public static LuanTable classpath(LuanState luan,String name) throws LuanException { |
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479 if( name.contains("//") ) |
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480 return null; |
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481 String path = name; |
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482 check(luan,"classpath:"+path); |
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483 URL url; |
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484 if( !path.contains("#") ) { |
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485 url = ClassLoader.getSystemResource(path); |
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486 } else { |
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487 String[] a = path.split("#"); |
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488 url = ClassLoader.getSystemResource(a[0]); |
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489 if( url==null ) { |
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490 for( int i=1; i<a.length; i++ ) { |
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491 url = ClassLoader.getSystemResource(a[0]+"/"+a[i]); |
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492 if( url != null ) { |
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493 try { |
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494 url = new URL(url,"."); |
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495 } catch(MalformedURLException e) { |
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496 throw new RuntimeException(e); |
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497 } |
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498 break; |
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499 } |
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500 } |
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501 } |
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502 } |
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503 if( url != null ) |
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504 return new LuanUrl(url).table(); |
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505 |
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506 return null; |
260
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507 } |
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508 |
299
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509 private static LuanTable url(String url) throws IOException { |
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510 return new LuanUrl(new URL(url)).table(); |
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511 } |
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512 |
299
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513 public static LuanTable http(String path) throws IOException { |
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514 return url("http:"+path); |
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515 } |
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516 |
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517 public static LuanTable https(String path) throws IOException { |
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518 return url("https:"+path); |
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519 } |
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520 |
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521 public static LuanTable luan(LuanState luan,String path) throws LuanException { |
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522 return classpath( luan, "luan/modules/" + path ); |
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523 } |
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524 |
265
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525 public static LuanTable stdin(LuanState luan) throws LuanException { |
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526 LuanTable io = (LuanTable)PackageLuan.loaded(luan).get("luan:Io"); |
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527 return (LuanTable)io.get("stdin"); |
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528 } |
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529 |
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530 public static LuanTable newSchemes() { |
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531 LuanTable schemes = new LuanTable(); |
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532 try { |
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533 add( schemes, "string", LuanState.class, String.class ); |
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534 add( schemes, "file", LuanState.class, String.class ); |
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535 add( schemes, "classpath", LuanState.class, String.class ); |
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536 add( schemes, "socket", LuanState.class, String.class ); |
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537 add( schemes, "http", String.class ); |
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538 add( schemes, "https", String.class ); |
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539 add( schemes, "luan", LuanState.class, String.class ); |
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540 add( schemes, "stdin", LuanState.class ); |
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541 } catch(NoSuchMethodException e) { |
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542 throw new RuntimeException(e); |
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543 } |
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544 return schemes; |
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545 } |
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546 |
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547 private static LuanTable schemes(LuanState luan) { |
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548 LuanTable t = (LuanTable)PackageLuan.loaded(luan).get("luan:Io"); |
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549 if( t == null ) |
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550 return newSchemes(); |
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551 t = (LuanTable)t.get("schemes"); |
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552 if( t == null ) |
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553 return newSchemes(); |
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554 return t; |
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555 } |
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556 |
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557 public static LuanTable Uri(LuanState luan,String name) throws LuanException { |
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558 int i = name.indexOf(':'); |
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559 if( i == -1 ) |
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560 throw luan.exception( "invalid Io name '"+name+"', missing scheme" ); |
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561 String scheme = name.substring(0,i); |
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562 String location = name.substring(i+1); |
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563 LuanTable schemes = schemes(luan); |
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564 LuanFunction opener = (LuanFunction)schemes.get(scheme); |
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565 if( opener == null ) |
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566 throw luan.exception( "invalid scheme '"+scheme+"' in '"+name+"'" ); |
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567 return (LuanTable)Luan.first(luan.call(opener,"<open \""+name+"\">",new Object[]{location})); |
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568 } |
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569 |
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570 public static final class LuanSocket extends LuanIO { |
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571 private final Socket socket; |
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572 |
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573 private LuanSocket(String host,int port) throws IOException { |
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574 this(new Socket(host,port)); |
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575 } |
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576 |
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577 private LuanSocket(Socket socket) throws IOException { |
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578 this.socket = socket; |
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579 } |
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580 |
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581 @Override InputStream inputStream() throws IOException { |
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582 return socket.getInputStream(); |
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583 } |
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584 |
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585 @Override OutputStream outputStream() throws IOException { |
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586 return socket.getOutputStream(); |
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587 } |
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588 |
147
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589 @Override public String to_string() { |
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590 return socket.toString(); |
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591 } |
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592 |
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593 public LuanTable Pickle_client(LuanState luan) throws IOException { |
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594 InputStream in = new BufferedInputStream(inputStream()); |
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595 OutputStream out = new BufferedOutputStream(outputStream()); |
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596 return new PickleClient(luan,in,out).table(); |
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597 } |
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598 |
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599 public void run_pickle_server(LuanState luan) throws IOException { |
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600 InputStream in = new BufferedInputStream(inputStream()); |
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601 OutputStream out = new BufferedOutputStream(outputStream()); |
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602 new PickleServer(luan,in,out).run(); |
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603 } |
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604 |
297
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605 @Override public LuanTable table() { |
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606 LuanTable tbl = super.table(); |
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607 try { |
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608 tbl.put( "Pickle_client", new LuanJavaFunction( |
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609 LuanSocket.class.getMethod( "Pickle_client", LuanState.class ), this |
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610 ) ); |
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611 tbl.put( "run_pickle_server", new LuanJavaFunction( |
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612 LuanSocket.class.getMethod( "run_pickle_server", LuanState.class ), this |
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613 ) ); |
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614 } catch(NoSuchMethodException e) { |
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615 throw new RuntimeException(e); |
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616 } |
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617 return tbl; |
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618 } |
125
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619 } |
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620 |
262
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621 public static LuanTable socket(LuanState luan,String name) throws LuanException, IOException { |
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622 int i = name.indexOf(':'); |
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623 if( i == -1 ) |
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624 throw luan.exception( "invalid socket '"+name+"', format is: <host>:<port>" ); |
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625 String host = name.substring(0,i); |
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626 String portStr = name.substring(i+1); |
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627 int port = Integer.parseInt(portStr); |
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628 return new LuanSocket(host,port).table(); |
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629 } |
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630 |
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631 public static LuanFunction socket_server(int port) throws IOException { |
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632 final ServerSocket ss = new ServerSocket(port); |
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633 return new LuanFunction() { |
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634 @Override public Object call(LuanState luan,Object[] args) throws LuanException { |
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635 try { |
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636 if( args.length > 0 ) { |
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637 if( args.length > 1 || !"close".equals(args[0]) ) |
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638 throw luan.exception( "the only argument allowed is 'close'" ); |
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639 ss.close(); |
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640 return null; |
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641 } |
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642 return new LuanSocket(ss.accept()).table(); |
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643 } catch(IOException e) { |
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644 throw luan.exception(e); |
125
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645 } |
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646 } |
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647 }; |
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648 } |
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649 |
203
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650 |
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651 // security |
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652 |
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653 public interface Security { |
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654 public void check(LuanState luan,String name) throws LuanException; |
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655 } |
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656 |
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657 private static String SECURITY_KEY = "Io.Security"; |
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658 |
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659 private static void check(LuanState luan,String name) throws LuanException { |
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660 Security s = (Security)luan.registry().get(SECURITY_KEY); |
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661 if( s!=null ) |
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662 s.check(luan,name); |
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663 } |
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664 |
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665 public static void setSecurity(LuanState luan,Security s) { |
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666 luan.registry().put(SECURITY_KEY,s); |
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667 } |
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668 |
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669 private void IoLuan() {} // never |
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670 } |