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annotate src/luan/lib/Utils.java @ 125:0cd559a16758

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add sockets git-svn-id: https://luan-java.googlecode.com/svn/trunk@126 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Fri, 06 Jun 2014 05:59:11 +0000
parents 1ff1c32417eb
children 0594c132888b
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1 package luan.lib;
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3 import java.io.Reader;
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4 import java.io.IOException;
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5 import java.io.ByteArrayOutputStream;
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6 import java.io.InputStream;
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7 import java.io.OutputStream;
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8 import luan.LuanState;
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9 import luan.LuanException;
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12 public final class Utils {
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13 private Utils() {} // never
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15 static final int bufSize = 8192;
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17 public static void checkNotNull(LuanState luan,Object v,String expected) throws LuanException {
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18 if( v == null )
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19 throw luan.JAVA.exception("bad argument #1 ("+expected+" expected, got nil)");
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20 }
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22 public static String readAll(Reader in)
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23 throws IOException
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24 {
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25 char[] a = new char[bufSize];
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26 StringBuilder buf = new StringBuilder();
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27 int n;
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28 while( (n=in.read(a)) != -1 ) {
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29 buf.append(a,0,n);
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30 }
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31 return buf.toString();
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32 }
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34 public static void copyAll(InputStream in,OutputStream out)
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35 throws IOException
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36 {
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37 byte[] a = new byte[bufSize];
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38 int n;
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39 while( (n=in.read(a)) != -1 ) {
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40 out.write(a,0,n);
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41 }
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42 }
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44 public static byte[] readAll(InputStream in)
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45 throws IOException
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46 {
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47 ByteArrayOutputStream out = new ByteArrayOutputStream();
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48 copyAll(in,out);
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49 return out.toByteArray();
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50 }
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52 }