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view src/luan/lib/Utils.java @ 125:0cd559a16758
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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> |
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date | Fri, 06 Jun 2014 05:59:11 +0000 |
parents | 1ff1c32417eb |
children | 0594c132888b |
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package luan.lib; import java.io.Reader; import java.io.IOException; import java.io.ByteArrayOutputStream; import java.io.InputStream; import java.io.OutputStream; import luan.LuanState; import luan.LuanException; public final class Utils { private Utils() {} // never static final int bufSize = 8192; public static void checkNotNull(LuanState luan,Object v,String expected) throws LuanException { if( v == null ) throw luan.JAVA.exception("bad argument #1 ("+expected+" expected, got nil)"); } public static String readAll(Reader in) throws IOException { char[] a = new char[bufSize]; StringBuilder buf = new StringBuilder(); int n; while( (n=in.read(a)) != -1 ) { buf.append(a,0,n); } return buf.toString(); } public static void copyAll(InputStream in,OutputStream out) throws IOException { byte[] a = new byte[bufSize]; int n; while( (n=in.read(a)) != -1 ) { out.write(a,0,n); } } public static byte[] readAll(InputStream in) throws IOException { ByteArrayOutputStream out = new ByteArrayOutputStream(); copyAll(in,out); return out.toByteArray(); } }