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Diffstat (limited to 'runtime/Java/src/main/java/org/antlr/runtime/ANTLRInputStream.java')
-rw-r--r-- | runtime/Java/src/main/java/org/antlr/runtime/ANTLRInputStream.java | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/runtime/Java/src/main/java/org/antlr/runtime/ANTLRInputStream.java b/runtime/Java/src/main/java/org/antlr/runtime/ANTLRInputStream.java new file mode 100644 index 0000000..e544aae --- /dev/null +++ b/runtime/Java/src/main/java/org/antlr/runtime/ANTLRInputStream.java @@ -0,0 +1,70 @@ +/* + [The "BSD license"] + Copyright (c) 2005-2009 Terence Parr + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions + are met: + 1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + 3. The name of the author may not be used to endorse or promote products + derived from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +package org.antlr.runtime; + +import java.io.*; + +/** A kind of ReaderStream that pulls from an InputStream. + * Useful for reading from stdin and specifying file encodings etc... + */ +public class ANTLRInputStream extends ANTLRReaderStream { + public ANTLRInputStream() { + } + + public ANTLRInputStream(InputStream input) throws IOException { + this(input, null); + } + + public ANTLRInputStream(InputStream input, int size) throws IOException { + this(input, size, null); + } + + public ANTLRInputStream(InputStream input, String encoding) throws IOException { + this(input, INITIAL_BUFFER_SIZE, encoding); + } + + public ANTLRInputStream(InputStream input, int size, String encoding) throws IOException { + this(input, size, READ_BUFFER_SIZE, encoding); + } + + public ANTLRInputStream(InputStream input, + int size, + int readBufferSize, + String encoding) + throws IOException + { + InputStreamReader isr; + if ( encoding!=null ) { + isr = new InputStreamReader(input, encoding); + } + else { + isr = new InputStreamReader(input); + } + load(isr, size, readBufferSize); + } +} |