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annotate src/luan/lib/IoLib.java @ 136:7e160d2f6d9c

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update HttpLib, untested git-svn-id: https://luan-java.googlecode.com/svn/trunk@137 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Wed, 11 Jun 2014 09:33:02 +0000
parents 3119326260ea
children 05f8c21160ef
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rev   line source
115
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1 package luan.lib;
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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.FileReader;
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9 import java.io.FileWriter;
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10 import java.io.BufferedReader;
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11 import java.io.BufferedWriter;
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12 import java.io.BufferedInputStream;
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13 import java.io.BufferedOutputStream;
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14 import java.io.File;
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15 import java.io.FileInputStream;
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16 import java.io.FileOutputStream;
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17 import java.io.InputStreamReader;
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18 import java.io.OutputStreamWriter;
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19 import java.io.ByteArrayInputStream;
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20 import java.io.DataInputStream;
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21 import java.io.DataOutputStream;
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22 import java.io.IOException;
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23 import java.net.URL;
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24 import java.net.Socket;
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25 import java.net.ServerSocket;
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26 import java.net.MalformedURLException;
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27 import luan.LuanState;
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28 import luan.LuanTable;
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29 import luan.LuanFunction;
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30 import luan.LuanJavaFunction;
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31 import luan.LuanException;
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34 public final class IoLib {
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35
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36 public static final String NAME = "Io";
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38 public static final LuanFunction LOADER = new LuanFunction() {
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39 @Override public Object call(LuanState luan,Object[] args) {
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40 LuanTable module = new LuanTable();
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41 try {
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42 add( module, "file", String.class );
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43 add( module, "java_resource_to_url", String.class );
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44 add( module, "url", String.class );
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45 add( module, "java_resource", String.class );
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46 add( module, "read_console_line", String.class );
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48 LuanTable stdin = new LuanTable();
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49 stdin.put( "read_text", new LuanJavaFunction(
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50 IoLib.class.getMethod( "stdin_read_text" ), null
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51 ) );
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52 stdin.put( "read_binary", new LuanJavaFunction(
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53 IoLib.class.getMethod( "stdin_read_binary" ), null
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54 ) );
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55 stdin.put( "read_lines", new LuanJavaFunction(
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56 IoLib.class.getMethod( "stdin_read_lines" ), null
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57 ) );
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58 stdin.put( "read_blocks", new LuanJavaFunction(
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59 IoLib.class.getMethod( "stdin_read_blocks", Integer.class ), null
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60 ) );
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61 module.put( "stdin", stdin );
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62
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63 add( module, "socket", String.class, Integer.TYPE );
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64 add( module, "socket_server", Integer.TYPE );
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65 } catch(NoSuchMethodException e) {
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66 throw new RuntimeException(e);
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67 }
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68 module.put( "stdout", textWriter(System.out) );
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69 module.put( "stderr", textWriter(System.err) );
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70 return module;
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71 }
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72 };
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74 private static void add(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException {
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75 t.put( method, new LuanJavaFunction(IoLib.class.getMethod(method,parameterTypes),null) );
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76 }
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79 public static String stdin_read_text() throws IOException {
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80 return Utils.readAll(new InputStreamReader(System.in));
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81 }
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83 public static byte[] stdin_read_binary() throws IOException {
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84 return Utils.readAll(System.in);
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85 }
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87 public static LuanFunction stdin_read_lines() throws IOException {
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88 return lines(new BufferedReader(new InputStreamReader(System.in)));
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89 }
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91 public static LuanFunction stdin_read_blocks(Integer blockSize) throws IOException {
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92 int n = blockSize!=null ? blockSize : Utils.bufSize;
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93 return blocks(System.in,n);
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94 }
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95
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96 public static String java_resource_to_url(String path) {
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97 URL url = ClassLoader.getSystemResource(path);
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98 return url==null ? null : url.toString();
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99 }
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100
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101 public static LuanTable java_resource(String path) throws IOException {
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102 return url(java_resource_to_url(path));
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103 }
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104
118
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105 public static String read_console_line(String prompt) throws IOException {
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106 if( prompt==null )
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107 prompt = "> ";
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108 return System.console().readLine(prompt);
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109 }
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110
115
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111
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112 public interface LuanWriter {
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113 public void write(LuanState luan,Object... args) throws LuanException, IOException;
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114 public void close() throws IOException;
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115 }
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116
122
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117 public static LuanTable textWriter(final PrintStream out) {
115
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118 LuanWriter luanWriter = new LuanWriter() {
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119
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120 public void write(LuanState luan,Object... args) throws LuanException {
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121 for( Object obj : args ) {
130
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122 out.print( luan.toString(obj) );
115
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123 }
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124 }
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125
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126 public void close() {
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127 out.close();
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128 }
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129 };
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130 return writer(luanWriter);
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131 }
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132
122
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133 public static LuanTable textWriter(final Writer out) {
115
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134 LuanWriter luanWriter = new LuanWriter() {
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135
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136 public void write(LuanState luan,Object... args) throws LuanException, IOException {
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137 for( Object obj : args ) {
130
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138 out.write( luan.toString(obj) );
115
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139 }
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140 }
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141
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142 public void close() throws IOException {
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143 out.close();
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144 }
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145 };
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146 return writer(luanWriter);
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147 }
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148
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149 private static LuanTable writer(LuanWriter luanWriter) {
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150 LuanTable writer = new LuanTable();
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151 try {
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152 writer.put( "write", new LuanJavaFunction(
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153 LuanWriter.class.getMethod( "write", LuanState.class, new Object[0].getClass() ), luanWriter
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154 ) );
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155 writer.put( "close", new LuanJavaFunction(
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156 LuanWriter.class.getMethod( "close" ), luanWriter
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157 ) );
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158 } catch(NoSuchMethodException e) {
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159 throw new RuntimeException(e);
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160 }
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161 return writer;
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162 }
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163
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164
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165 public static LuanTable binaryWriter(final OutputStream out) {
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166 LuanTable writer = new LuanTable();
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167 try {
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168 writer.put( "write", new LuanJavaFunction(
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169 OutputStream.class.getMethod( "write", new byte[0].getClass() ), out
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170 ) );
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171 writer.put( "close", new LuanJavaFunction(
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172 OutputStream.class.getMethod( "close" ), out
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173 ) );
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174 } catch(NoSuchMethodException e) {
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175 throw new RuntimeException(e);
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176 }
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177 return writer;
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178 }
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179
116
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180 static LuanFunction lines(final BufferedReader in) {
115
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181 return new LuanFunction() {
116
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182 @Override public Object call(LuanState luan,Object[] args) throws LuanException {
115
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183 try {
116
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184 if( args.length > 0 ) {
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185 if( args.length > 1 || !"close".equals(args[0]) )
130
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186 throw luan.exception( "the only argument allowed is 'close'" );
115
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187 in.close();
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188 return null;
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189 }
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190 String rtn = in.readLine();
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191 if( rtn==null )
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192 in.close();
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193 return rtn;
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194 } catch(IOException e) {
130
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195 throw luan.exception(e);
115
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196 }
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197 }
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198 };
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199 }
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200
116
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201 static LuanFunction blocks(final InputStream in,final int blockSize) {
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202 return new LuanFunction() {
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203 final byte[] a = new byte[blockSize];
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204
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205 @Override public Object call(LuanState luan,Object[] args) throws LuanException {
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206 try {
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207 if( args.length > 0 ) {
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208 if( args.length > 1 || !"close".equals(args[0]) )
130
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209 throw luan.exception( "the only argument allowed is 'close'" );
116
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210 in.close();
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211 return null;
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212 }
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213 if( in.read(a) == -1 ) {
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214 in.close();
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215 return null;
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216 }
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217 return a;
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218 } catch(IOException e) {
130
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219 throw luan.exception(e);
116
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220 }
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221 }
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222 };
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223 }
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224
125
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225
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226
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227 public static abstract class LuanIn {
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228 abstract InputStream inputStream() throws IOException;
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229
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230 public String read_text() throws IOException {
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231 Reader in = new InputStreamReader(inputStream());
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232 String s = Utils.readAll(in);
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233 in.close();
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234 return s;
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235 }
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236
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237 public byte[] read_binary() throws IOException {
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238 InputStream in = inputStream();
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239 byte[] a = Utils.readAll(in);
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240 in.close();
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241 return a;
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242 }
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243
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244 public LuanFunction read_lines() throws IOException {
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245 return lines(new BufferedReader(new InputStreamReader(inputStream())));
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246 }
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247
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248 public LuanFunction read_blocks(Integer blockSize) throws IOException {
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249 int n = blockSize!=null ? blockSize : Utils.bufSize;
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250 return blocks(inputStream(),n);
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251 }
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252
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253 LuanTable table() {
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254 LuanTable tbl = new LuanTable();
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255 try {
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256 tbl.put( "read_text", new LuanJavaFunction(
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257 LuanIn.class.getMethod( "read_text" ), this
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258 ) );
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259 tbl.put( "read_binary", new LuanJavaFunction(
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260 LuanIn.class.getMethod( "read_binary" ), this
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261 ) );
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262 tbl.put( "read_lines", new LuanJavaFunction(
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263 LuanIn.class.getMethod( "read_lines" ), this
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264 ) );
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265 tbl.put( "read_blocks", new LuanJavaFunction(
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266 LuanIn.class.getMethod( "read_blocks", Integer.class ), this
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267 ) );
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diff changeset
268 } catch(NoSuchMethodException e) {
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269 throw new RuntimeException(e);
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270 }
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271 return tbl;
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272 }
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273 }
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274
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275 public static abstract class LuanIO extends LuanIn {
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276 abstract OutputStream outputStream() throws IOException;
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277
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278 public void write(LuanState luan,Object obj) throws LuanException, IOException {
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279 if( obj instanceof String ) {
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280 String s = (String)obj;
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281 Writer out = new OutputStreamWriter(outputStream());
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282 out.write(s);
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283 out.close();
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284 return;
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285 }
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diff changeset
286 if( obj instanceof byte[] ) {
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287 byte[] a = (byte[])obj;
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diff changeset
288 OutputStream out = outputStream();
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diff changeset
289 Utils.copyAll(new ByteArrayInputStream(a),out);
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diff changeset
290 out.close();
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diff changeset
291 return;
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diff changeset
292 }
130
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diff changeset
293 throw luan.exception( "bad argument #1 to 'write' (string or binary expected)" );
125
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diff changeset
294 }
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295
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296 public LuanTable text_writer() throws IOException {
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297 return textWriter(new BufferedWriter(new OutputStreamWriter(outputStream())));
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298 }
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299
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diff changeset
300 public LuanTable binary_writer() throws IOException {
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301 return binaryWriter(new BufferedOutputStream(outputStream()));
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302 }
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303
129
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diff changeset
304 @Override LuanTable table() {
125
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305 LuanTable tbl = super.table();
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306 try {
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307 tbl.put( "write", new LuanJavaFunction(
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308 LuanIO.class.getMethod( "write", LuanState.class, Object.class ), this
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diff changeset
309 ) );
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diff changeset
310 tbl.put( "text_writer", new LuanJavaFunction(
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diff changeset
311 LuanIO.class.getMethod( "text_writer" ), this
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312 ) );
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313 tbl.put( "binary_writer", new LuanJavaFunction(
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314 LuanIO.class.getMethod( "binary_writer" ), this
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315 ) );
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316 } catch(NoSuchMethodException e) {
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317 throw new RuntimeException(e);
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318 }
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319 return tbl;
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320 }
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321 }
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322
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323 public static final class LuanUrl extends LuanIn {
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324 private final URL url;
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325
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326 public LuanUrl(String s) throws MalformedURLException {
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327 this.url = new URL(s);
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328 }
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329
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330 InputStream inputStream() throws IOException {
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331 return url.openStream();
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332 }
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333 }
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334
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335 public static LuanTable url(String s) throws MalformedURLException {
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336 return new LuanUrl(s).table();
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337 }
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338
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339 public static final class LuanFile extends LuanIO {
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340 private final File file;
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341
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342 public LuanFile(String name) {
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343 this.file = new File(name);
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344 }
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345
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346 InputStream inputStream() throws IOException {
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347 return new FileInputStream(file);
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348 }
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349
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350 OutputStream outputStream() throws IOException {
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351 return new FileOutputStream(file);
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352 }
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353 }
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354
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355 public static LuanTable file(String name) {
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356 return new LuanFile(name).table();
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357 }
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358
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359 public static final class LuanSocket extends LuanIO {
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360 private final Socket socket;
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361
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362 public LuanSocket(String host,int port) throws IOException {
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363 this(new Socket(host,port));
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364 }
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365
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366 public LuanSocket(Socket socket) throws IOException {
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367 this.socket = socket;
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368 }
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369
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370 InputStream inputStream() throws IOException {
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371 return socket.getInputStream();
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372 }
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373
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374 OutputStream outputStream() throws IOException {
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375 return socket.getOutputStream();
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376 }
129
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377
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378 public LuanTable pickle_client(LuanState luan) throws IOException {
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379 DataInputStream in = new DataInputStream(new BufferedInputStream(inputStream()));
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380 DataOutputStream out = new DataOutputStream(new BufferedOutputStream(outputStream()));
486a0641bca4 add pickle client/server;
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381 return new PickleClient(luan,in,out).table();
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382 }
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383
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384 public void run_pickle_server(LuanState luan) throws IOException {
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385 DataInputStream in = new DataInputStream(new BufferedInputStream(inputStream()));
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386 DataOutputStream out = new DataOutputStream(new BufferedOutputStream(outputStream()));
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387 new PickleServer(luan,in,out).run();
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388 }
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389
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diff changeset
390 @Override LuanTable table() {
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391 LuanTable tbl = super.table();
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392 try {
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393 tbl.put( "pickle_client", new LuanJavaFunction(
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diff changeset
394 LuanSocket.class.getMethod( "pickle_client", LuanState.class ), this
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diff changeset
395 ) );
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396 tbl.put( "run_pickle_server", new LuanJavaFunction(
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diff changeset
397 LuanSocket.class.getMethod( "run_pickle_server", LuanState.class ), this
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diff changeset
398 ) );
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diff changeset
399 } catch(NoSuchMethodException e) {
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diff changeset
400 throw new RuntimeException(e);
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diff changeset
401 }
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diff changeset
402 return tbl;
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diff changeset
403 }
125
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diff changeset
404 }
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diff changeset
405
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diff changeset
406 public static LuanTable socket(String host,int port) throws IOException {
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diff changeset
407 return new LuanSocket(host,port).table();
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diff changeset
408 }
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diff changeset
409
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diff changeset
410 public static LuanFunction socket_server(int port) throws IOException {
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diff changeset
411 final ServerSocket ss = new ServerSocket(port);
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diff changeset
412 return new LuanFunction() {
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diff changeset
413 @Override public Object call(LuanState luan,Object[] args) throws LuanException {
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diff changeset
414 try {
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diff changeset
415 if( args.length > 0 ) {
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diff changeset
416 if( args.length > 1 || !"close".equals(args[0]) )
130
0594c132888b cleanup
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diff changeset
417 throw luan.exception( "the only argument allowed is 'close'" );
125
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diff changeset
418 ss.close();
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diff changeset
419 return null;
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420 }
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421 return new LuanSocket(ss.accept()).table();
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422 } catch(IOException e) {
130
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423 throw luan.exception(e);
125
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424 }
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425 }
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426 };
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427 }
136
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428
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429 private void IoLib() {} // never
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430 }