/* * Copyright 1999-2004 The Apache Software Foundation. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /* $Id$ */ package org.apache.fop.util; import java.io.FilterOutputStream; import java.io.OutputStream; import java.io.IOException; /** * This class applies a RunLengthEncode filter to the stream. * * @author Stephen Wolke * @version $Id$ */ public class RunLengthEncodeOutputStream extends FilterOutputStream implements Finalizable { private static final int MAX_SEQUENCE_COUNT = 127; private static final int END_OF_DATA = 128; private static final int BYTE_MAX = 256; private static final int NOT_IDENTIFY_SEQUENCE = 0; private static final int START_SEQUENCE = 1; private static final int IN_SEQUENCE = 2; private static final int NOT_IN_SEQUENCE = 3; private int runCount = 0; private int isSequence = NOT_IDENTIFY_SEQUENCE; private byte[] runBuffer = new byte[MAX_SEQUENCE_COUNT + 1]; /** @see java.io.FilterOutputStream **/ public RunLengthEncodeOutputStream(OutputStream out) { super(out); } /** @see java.io.FilterOutputStream **/ public void write(byte b) throws java.io.IOException { runBuffer[runCount] = b; switch (runCount) { case 0: runCount = 0; isSequence = NOT_IDENTIFY_SEQUENCE; runCount++; break; case 1: if (runBuffer[runCount] != runBuffer[runCount - 1]) { isSequence = NOT_IN_SEQUENCE; } runCount++; break; case 2: if (runBuffer[runCount] != runBuffer[runCount - 1]) { isSequence = NOT_IN_SEQUENCE; } else { if (isSequence == NOT_IN_SEQUENCE) { isSequence = START_SEQUENCE; } else { isSequence = IN_SEQUENCE; } } runCount++; break; case MAX_SEQUENCE_COUNT: if (isSequence == IN_SEQUENCE) { out.write(BYTE_MAX - (MAX_SEQUENCE_COUNT - 1)); out.write(runBuffer[runCount - 1]); runBuffer[0] = runBuffer[runCount]; runCount = 1; } else { out.write(MAX_SEQUENCE_COUNT); out.write(runBuffer, 0, runCount + 1); runCount = 0; } isSequence = NOT_IDENTIFY_SEQUENCE; break; default: switch (isSequence) { case IN_SEQUENCE: if (runBuffer[runCount] != runBuffer[runCount - 1]) { out.write(BYTE_MAX - (runCount - 1)); out.write(runBuffer[runCount - 1]); runBuffer[0] = runBuffer[runCount]; runCount = 1; isSequence = NOT_IDENTIFY_SEQUENCE; break; } runCount++; break; case NOT_IN_SEQUENCE: if (runBuffer[runCount] == runBuffer[runCount - 1]) { isSequence = START_SEQUENCE; } runCount++; break; case START_SEQUENCE: if (runBuffer[runCount] == runBuffer[runCount - 1]) { out.write(runCount - 3); out.write(runBuffer, 0, runCount - 2); runBuffer[0] = runBuffer[runCount]; runBuffer[1] = runBuffer[runCount]; runBuffer[2] = runBuffer[runCount]; runCount = 3; isSequence = IN_SEQUENCE; break; } else { isSequence = NOT_IN_SEQUENCE; runCount++; break; } } } } /** @see java.io.FilterOutputStream **/ public void write(byte[] b) throws IOException { for (int i = 0; i < b.length; i++) { this.write(b[i]); } } /** @see java.io.FilterOutputStream **/ public void write(byte[] b, int off, int len) throws IOException { for (int i = 0; i < len; i++) { this.write(b[off + i]); } } /** @see Finalizable **/ public void finalizeStream() throws IOException { switch (isSequence) { case IN_SEQUENCE: out.write(BYTE_MAX - (runCount - 1)); out.write(runBuffer[runCount - 1]); break; default: out.write(runCount - 1); out.write(runBuffer, 0, runCount); } out.write(END_OF_DATA); flush(); if (out instanceof Finalizable) { ((Finalizable) out).finalizeStream(); } } /** @see java.io.FilterOutputStream **/ public void close() throws IOException { finalizeStream(); super.close(); } } ss */ .highlight .no { color: #003366; font-weight: bold } /* Name.Constant */ .highlight .nd { color: #555555 } /* Name.Decorator */ .highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */ .highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */ .highlight .nl { color: #336699; font-style: italic } /* Name.Label */ .highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */ .highlight .py { color: #336699; font-weight: bold } /* Name.Property */ .highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */ .highlight .nv { color: #336699 } /* Name.Variable */ .highlight .ow { color: #008800 } /* Operator.Word */ .highlight .w { color: #bbbbbb } /* Text.Whitespace */ .highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */ .highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */ .highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */ .highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */ .highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */ .highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */ .highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */ .highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */ .highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */ .highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */ .highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */ .highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */ .highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */ .highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */ .highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */ .highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */ .highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */ .highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */ .highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #336699 } /* Name.Variable.Class */ .highlight .vg { color: #dd7700 } /* Name.Variable.Global */ .highlight .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */

{
  "name": "svg.js",
  "repo": "wout/svg.js",
  "description": "A lightweight library for manipulating and animating SVG",
  "version": "1.0.0-rc.4",
  "keywords": ["svg"],
  "author": "Wout Fierens <wout@impinc.co.uk>",
  "main": "dist/svg.js",
  "scripts": ["dist/svg.js"],
  "license": "MIT"
}