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annotate src/luan/lib/IoLib.java @ 129:486a0641bca4

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add pickle client/server; fix parser bugs; git-svn-id: https://luan-java.googlecode.com/svn/trunk@130 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Mon, 09 Jun 2014 09:16:16 +0000
parents 0cd559a16758
children 0594c132888b
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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 void load(LuanState luan) throws LuanException {
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37 luan.load("Io",LOADER);
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38 }
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40 public static final LuanFunction LOADER = new LuanFunction() {
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41 @Override public Object call(LuanState luan,Object[] args) {
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42 LuanTable module = new LuanTable();
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43 try {
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44 add( module, "file", String.class );
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45 add( module, "java_resource_to_url", String.class );
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46 add( module, "url", String.class );
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47 add( module, "java_resource", String.class );
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48 add( module, "read_console_line", String.class );
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49
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50 LuanTable stdin = new LuanTable();
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51 stdin.put( "read_text", new LuanJavaFunction(
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52 IoLib.class.getMethod( "stdin_read_text" ), null
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53 ) );
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54 stdin.put( "read_binary", new LuanJavaFunction(
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55 IoLib.class.getMethod( "stdin_read_binary" ), null
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56 ) );
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57 stdin.put( "read_lines", new LuanJavaFunction(
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58 IoLib.class.getMethod( "stdin_read_lines" ), null
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59 ) );
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60 stdin.put( "read_blocks", new LuanJavaFunction(
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61 IoLib.class.getMethod( "stdin_read_blocks", Integer.class ), null
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62 ) );
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63 module.put( "stdin", stdin );
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64
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65 add( module, "socket", String.class, Integer.TYPE );
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66 add( module, "socket_server", Integer.TYPE );
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67 } catch(NoSuchMethodException e) {
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68 throw new RuntimeException(e);
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69 }
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70 module.put( "stdout", textWriter(System.out) );
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71 module.put( "stderr", textWriter(System.err) );
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72 return module;
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73 }
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74 };
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76 private static void add(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException {
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77 t.put( method, new LuanJavaFunction(IoLib.class.getMethod(method,parameterTypes),null) );
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78 }
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81 public static String stdin_read_text() throws IOException {
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82 return Utils.readAll(new InputStreamReader(System.in));
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83 }
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85 public static byte[] stdin_read_binary() throws IOException {
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86 return Utils.readAll(System.in);
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87 }
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89 public static LuanFunction stdin_read_lines() throws IOException {
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90 return lines(new BufferedReader(new InputStreamReader(System.in)));
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91 }
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93 public static LuanFunction stdin_read_blocks(Integer blockSize) throws IOException {
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94 int n = blockSize!=null ? blockSize : Utils.bufSize;
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95 return blocks(System.in,n);
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96 }
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98 public static String java_resource_to_url(String path) throws IOException {
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99 URL url = ClassLoader.getSystemResource(path);
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100 return url==null ? null : url.toString();
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101 }
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102
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103 public static LuanTable java_resource(String path) throws IOException {
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104 return url(java_resource_to_url(path));
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105 }
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106
118
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107 public static String read_console_line(String prompt) throws IOException {
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108 if( prompt==null )
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109 prompt = "> ";
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110 return System.console().readLine(prompt);
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111 }
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112
115
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113
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114 public interface LuanWriter {
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115 public void write(LuanState luan,Object... args) throws LuanException, IOException;
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116 public void close() throws IOException;
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117 }
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118
122
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119 public static LuanTable textWriter(final PrintStream out) {
115
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120 LuanWriter luanWriter = new LuanWriter() {
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121
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122 public void write(LuanState luan,Object... args) throws LuanException {
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123 for( Object obj : args ) {
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124 out.print( luan.JAVA.toString(obj) );
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125 }
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126 }
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127
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128 public void close() {
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129 out.close();
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130 }
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131 };
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132 return writer(luanWriter);
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133 }
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134
122
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135 public static LuanTable textWriter(final Writer out) {
115
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136 LuanWriter luanWriter = new LuanWriter() {
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137
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138 public void write(LuanState luan,Object... args) throws LuanException, IOException {
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139 for( Object obj : args ) {
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140 out.write( luan.JAVA.toString(obj) );
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141 }
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142 }
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143
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144 public void close() throws IOException {
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145 out.close();
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146 }
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147 };
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148 return writer(luanWriter);
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149 }
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150
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151 private static LuanTable writer(LuanWriter luanWriter) {
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152 LuanTable writer = new LuanTable();
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153 try {
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154 writer.put( "write", new LuanJavaFunction(
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155 LuanWriter.class.getMethod( "write", LuanState.class, new Object[0].getClass() ), luanWriter
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156 ) );
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157 writer.put( "close", new LuanJavaFunction(
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158 LuanWriter.class.getMethod( "close" ), luanWriter
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159 ) );
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160 } catch(NoSuchMethodException e) {
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161 throw new RuntimeException(e);
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162 }
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163 return writer;
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164 }
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165
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166
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167 public static LuanTable binaryWriter(final OutputStream out) {
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168 LuanTable writer = new LuanTable();
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169 try {
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170 writer.put( "write", new LuanJavaFunction(
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171 OutputStream.class.getMethod( "write", new byte[0].getClass() ), out
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172 ) );
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173 writer.put( "close", new LuanJavaFunction(
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174 OutputStream.class.getMethod( "close" ), out
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175 ) );
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176 } catch(NoSuchMethodException e) {
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177 throw new RuntimeException(e);
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178 }
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179 return writer;
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180 }
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181
116
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182 static LuanFunction lines(final BufferedReader in) {
115
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183 return new LuanFunction() {
116
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184 @Override public Object call(LuanState luan,Object[] args) throws LuanException {
115
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185 try {
116
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186 if( args.length > 0 ) {
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187 if( args.length > 1 || !"close".equals(args[0]) )
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188 throw luan.JAVA.exception( "the only argument allowed is 'close'" );
115
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189 in.close();
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190 return null;
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191 }
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192 String rtn = in.readLine();
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193 if( rtn==null )
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194 in.close();
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195 return rtn;
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196 } catch(IOException e) {
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197 throw luan.JAVA.exception(e);
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198 }
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199 }
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200 };
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201 }
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202
116
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203 static LuanFunction blocks(final InputStream in,final int blockSize) {
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204 return new LuanFunction() {
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205 final byte[] a = new byte[blockSize];
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206
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207 @Override public Object call(LuanState luan,Object[] args) throws LuanException {
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208 try {
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209 if( args.length > 0 ) {
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210 if( args.length > 1 || !"close".equals(args[0]) )
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211 throw luan.JAVA.exception( "the only argument allowed is 'close'" );
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212 in.close();
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213 return null;
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214 }
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215 if( in.read(a) == -1 ) {
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216 in.close();
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217 return null;
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218 }
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219 return a;
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220 } catch(IOException e) {
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221 throw luan.JAVA.exception(e);
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222 }
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223 }
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224 };
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225 }
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226
125
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227
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228
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229 public static abstract class LuanIn {
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230 abstract InputStream inputStream() throws IOException;
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231
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232 public String read_text() throws IOException {
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233 Reader in = new InputStreamReader(inputStream());
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234 String s = Utils.readAll(in);
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235 in.close();
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236 return s;
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237 }
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238
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239 public byte[] read_binary() throws IOException {
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240 InputStream in = inputStream();
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241 byte[] a = Utils.readAll(in);
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242 in.close();
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243 return a;
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244 }
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245
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246 public LuanFunction read_lines() throws IOException {
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247 return lines(new BufferedReader(new InputStreamReader(inputStream())));
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248 }
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249
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250 public LuanFunction read_blocks(Integer blockSize) throws IOException {
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251 int n = blockSize!=null ? blockSize : Utils.bufSize;
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252 return blocks(inputStream(),n);
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253 }
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254
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255 LuanTable table() {
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256 LuanTable tbl = new LuanTable();
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257 try {
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258 tbl.put( "read_text", new LuanJavaFunction(
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259 LuanIn.class.getMethod( "read_text" ), this
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260 ) );
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261 tbl.put( "read_binary", new LuanJavaFunction(
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262 LuanIn.class.getMethod( "read_binary" ), this
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263 ) );
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264 tbl.put( "read_lines", new LuanJavaFunction(
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265 LuanIn.class.getMethod( "read_lines" ), this
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266 ) );
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267 tbl.put( "read_blocks", new LuanJavaFunction(
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268 LuanIn.class.getMethod( "read_blocks", Integer.class ), this
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269 ) );
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270 } catch(NoSuchMethodException e) {
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271 throw new RuntimeException(e);
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272 }
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273 return tbl;
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274 }
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275 }
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276
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277 public static abstract class LuanIO extends LuanIn {
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278 abstract OutputStream outputStream() throws IOException;
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279
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280 public void write(LuanState luan,Object obj) throws LuanException, IOException {
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281 if( obj instanceof String ) {
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282 String s = (String)obj;
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283 Writer out = new OutputStreamWriter(outputStream());
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284 out.write(s);
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285 out.close();
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286 return;
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287 }
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288 if( obj instanceof byte[] ) {
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289 byte[] a = (byte[])obj;
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290 OutputStream out = outputStream();
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291 Utils.copyAll(new ByteArrayInputStream(a),out);
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292 out.close();
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293 return;
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294 }
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295 throw luan.JAVA.exception( "bad argument #1 to 'write' (string or binary expected)" );
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296 }
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297
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298 public LuanTable text_writer() throws IOException {
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299 return textWriter(new BufferedWriter(new OutputStreamWriter(outputStream())));
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300 }
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301
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302 public LuanTable binary_writer() throws IOException {
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303 return binaryWriter(new BufferedOutputStream(outputStream()));
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304 }
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305
129
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306 @Override LuanTable table() {
125
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307 LuanTable tbl = super.table();
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308 try {
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309 tbl.put( "write", new LuanJavaFunction(
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310 LuanIO.class.getMethod( "write", LuanState.class, Object.class ), this
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311 ) );
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312 tbl.put( "text_writer", new LuanJavaFunction(
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313 LuanIO.class.getMethod( "text_writer" ), this
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314 ) );
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315 tbl.put( "binary_writer", new LuanJavaFunction(
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316 LuanIO.class.getMethod( "binary_writer" ), this
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317 ) );
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318 } catch(NoSuchMethodException e) {
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319 throw new RuntimeException(e);
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320 }
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321 return tbl;
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322 }
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323 }
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324
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325 public static final class LuanUrl extends LuanIn {
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326 private final URL url;
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327
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328 public LuanUrl(String s) throws MalformedURLException {
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329 this.url = new URL(s);
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330 }
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331
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332 InputStream inputStream() throws IOException {
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333 return url.openStream();
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334 }
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335 }
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336
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337 public static LuanTable url(String s) throws MalformedURLException {
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338 return new LuanUrl(s).table();
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339 }
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340
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341 public static final class LuanFile extends LuanIO {
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342 private final File file;
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343
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344 public LuanFile(String name) {
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345 this.file = new File(name);
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346 }
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347
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348 InputStream inputStream() throws IOException {
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349 return new FileInputStream(file);
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350 }
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351
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352 OutputStream outputStream() throws IOException {
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353 return new FileOutputStream(file);
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354 }
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355 }
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356
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357 public static LuanTable file(String name) {
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358 return new LuanFile(name).table();
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359 }
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360
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361 public static final class LuanSocket extends LuanIO {
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362 private final Socket socket;
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363
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364 public LuanSocket(String host,int port) throws IOException {
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365 this(new Socket(host,port));
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366 }
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parents: 124
diff changeset
367
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368 public LuanSocket(Socket socket) throws IOException {
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369 this.socket = socket;
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370 }
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parents: 124
diff changeset
371
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diff changeset
372 InputStream inputStream() throws IOException {
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diff changeset
373 return socket.getInputStream();
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374 }
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parents: 124
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375
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376 OutputStream outputStream() throws IOException {
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377 return socket.getOutputStream();
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parents: 124
diff changeset
378 }
129
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parents: 125
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379
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diff changeset
380 public LuanTable pickle_client(LuanState luan) throws IOException {
486a0641bca4 add pickle client/server;
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diff changeset
381 DataInputStream in = new DataInputStream(new BufferedInputStream(inputStream()));
486a0641bca4 add pickle client/server;
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382 DataOutputStream out = new DataOutputStream(new BufferedOutputStream(outputStream()));
486a0641bca4 add pickle client/server;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 125
diff changeset
383 return new PickleClient(luan,in,out).table();
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parents: 125
diff changeset
384 }
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parents: 125
diff changeset
385
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diff changeset
386 public void run_pickle_server(LuanState luan) throws IOException {
486a0641bca4 add pickle client/server;
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parents: 125
diff changeset
387 DataInputStream in = new DataInputStream(new BufferedInputStream(inputStream()));
486a0641bca4 add pickle client/server;
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diff changeset
388 DataOutputStream out = new DataOutputStream(new BufferedOutputStream(outputStream()));
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diff changeset
389 new PickleServer(luan,in,out).run();
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parents: 125
diff changeset
390 }
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parents: 125
diff changeset
391
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diff changeset
392 @Override LuanTable table() {
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diff changeset
393 LuanTable tbl = super.table();
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diff changeset
394 try {
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diff changeset
395 tbl.put( "pickle_client", new LuanJavaFunction(
486a0641bca4 add pickle client/server;
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diff changeset
396 LuanSocket.class.getMethod( "pickle_client", LuanState.class ), this
486a0641bca4 add pickle client/server;
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parents: 125
diff changeset
397 ) );
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diff changeset
398 tbl.put( "run_pickle_server", new LuanJavaFunction(
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parents: 125
diff changeset
399 LuanSocket.class.getMethod( "run_pickle_server", LuanState.class ), this
486a0641bca4 add pickle client/server;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 125
diff changeset
400 ) );
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parents: 125
diff changeset
401 } catch(NoSuchMethodException e) {
486a0641bca4 add pickle client/server;
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diff changeset
402 throw new RuntimeException(e);
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parents: 125
diff changeset
403 }
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parents: 125
diff changeset
404 return tbl;
486a0641bca4 add pickle client/server;
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parents: 125
diff changeset
405 }
125
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parents: 124
diff changeset
406 }
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parents: 124
diff changeset
407
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diff changeset
408 public static LuanTable socket(String host,int port) throws IOException {
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diff changeset
409 return new LuanSocket(host,port).table();
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parents: 124
diff changeset
410 }
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parents: 124
diff changeset
411
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diff changeset
412 public static LuanFunction socket_server(int port) throws IOException {
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diff changeset
413 final ServerSocket ss = new ServerSocket(port);
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parents: 124
diff changeset
414 return new LuanFunction() {
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diff changeset
415 @Override public Object call(LuanState luan,Object[] args) throws LuanException {
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diff changeset
416 try {
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diff changeset
417 if( args.length > 0 ) {
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parents: 124
diff changeset
418 if( args.length > 1 || !"close".equals(args[0]) )
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
419 throw luan.JAVA.exception( "the only argument allowed is 'close'" );
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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420 ss.close();
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421 return null;
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422 }
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423 return new LuanSocket(ss.accept()).table();
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424 } catch(IOException e) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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425 throw luan.JAVA.exception(e);
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426 }
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427 }
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428 };
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429 }
115
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430 }