new, improved and shiny version, courtesy of Jos Hirth
This commit is contained in:
Brian Matzon
parent
e34ce0f20c
commit
0c539252b4
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@ -1,12 +1,13 @@
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package org.lwjgl.util;
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import java.io.BufferedOutputStream;
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.LineNumberReader;
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import java.util.HashMap;
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import java.util.StringTokenizer;
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@ -15,169 +16,209 @@ import java.util.StringTokenizer;
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* <p>
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* NOTE: This simple XPM reader does not support extensions nor hotspots
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* </p>
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*
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* @author Brian Matzon <brian@matzon.dk>
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* @author Jos Hirth
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* @version $Revision$
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*/
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public class XPMFile {
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/** Array of bytes (RGBA) */
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private byte bytes[] = null;
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private byte bytes[] = null;
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/** Height of image */
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private int height = 0;
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private final static int WIDTH = 0;
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/** Width of image */
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private int width = 0;
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private final static int HEIGHT = 1;
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/*
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* Private constructor, use load(String filename)
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private final static int NUMBER_OF_COLORS = 2;
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private final static int CHARACTERS_PER_PIXEL = 3;
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private static int[] format = new int[4];
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/*
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* Private constructor, use load(String filename)
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*/
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private XPMFile() { }
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private XPMFile() {
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}
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/**
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* Loads the XPM file
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* Loads the XPM file
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*
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* @param file path to file
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* @return XPMFile loaded, or exception
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* @throws IOException If any IO exceptions occurs while reading file
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* @param file
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* path to file
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* @return XPMFile loaded, or exception
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* @throws IOException
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* If any IO exceptions occurs while reading file
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*/
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public static XPMFile load(String file) throws IOException {
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return load(new FileInputStream(new File(file)));
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}
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/**
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* Loads the XPM file
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* Loads the XPM file
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*
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* @param is InputStream to read file from
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* @return XPMFile loaded, or exception
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* @throws IOException If any IO exceptions occurs while reading file
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* @param is
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* InputStream to read file from
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* @return XPMFile loaded, or exception
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* @throws IOException
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* If any IO exceptions occurs while reading file
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*/
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public static XPMFile load(InputStream is) throws IOException {
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XPMFile xFile = new XPMFile();
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xFile.readImage(is);
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return xFile;
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}
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}
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/**
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* @return the height of the image.
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/**
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* @return the height of the image.
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*/
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public int getHeight() {
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return height;
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return format[HEIGHT];
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}
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/**
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* @return the width of the image.
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/**
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* @return the width of the image.
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*/
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public int getWidth() {
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return width;
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return format[WIDTH];
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}
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/**
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* @return The data of the image.
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/**
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* @return The data of the image.
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*/
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public byte[] getBytes() {
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return bytes;
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}
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/**
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* Read the image from the specified file.
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/**
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* Read the image from the specified file.
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*
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* @throws IOException If any IO exceptions occurs while reading file
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* @throws IOException
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* If any IO exceptions occurs while reading file
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*/
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private void readImage(InputStream is) throws IOException {
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try {
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BufferedReader br = new BufferedReader(new InputStreamReader(is));
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LineNumberReader reader = new LineNumberReader(
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new InputStreamReader(is));
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HashMap colors = new HashMap();
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String comment = br.readLine();
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String typedef = br.readLine();
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int[] format = parseFormat(br.readLine());
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format = parseFormat(nextLineOfInterest(reader));
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// setup color mapping
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for (int i = 0; i < format[2]; i++) {
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Object[] colorDefinition = parseColor(br.readLine());
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for (int i = 0; i < format[NUMBER_OF_COLORS]; i++) {
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Object[] colorDefinition = parseColor(nextLineOfInterest(reader));
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colors.put(colorDefinition[0], colorDefinition[1]);
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}
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// read actual image (convert to RGBA)
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bytes = new byte[format[0] * format[1] * 4];
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for (int i = 0; i < format[1]; i++) {
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parseImageLine(br.readLine(), format, colors, i);
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bytes = new byte[format[WIDTH] * format[HEIGHT] * 4];
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for (int i = 0; i < format[HEIGHT]; i++) {
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parseImageLine(nextLineOfInterest(reader), format, colors, i);
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}
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} catch (Exception e) {
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e.printStackTrace();
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throw new IllegalArgumentException("Unable to parse XPM File");
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}
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}
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/**
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* Finds the next interesting line of text.
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*
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* @param reader
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* The LineNumberReader to read from
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* @return The next interesting String (with stripped quotes)
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* @throws IOException
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* If any IO exceptions occurs while reading file
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*/
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private String nextLineOfInterest(LineNumberReader reader)
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throws IOException {
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String ret;
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do {
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ret = reader.readLine();
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} while (!ret.startsWith("\""));
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// lacks sanity check
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return ret.substring(1, ret.lastIndexOf('\"'));
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}
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/**
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* Parses the format of the xpm file given a format string
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*
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* @param format String to parse
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*
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* @param format
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* String to parse
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* @return Array specifying width, height, colors, characters per pixel
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*/
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private int[] parseFormat(String format) {
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// format should look like this:
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// "16 16 122 2",
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// nuke first and last " and last ,
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format = format.substring(1, format.length() - 2);
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// 16 16 122 2
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// tokenize it
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StringTokenizer st = new StringTokenizer(format);
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return new int[] {
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Integer.parseInt(st.nextToken()), /* width */
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Integer.parseInt(st.nextToken()), /* height */
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Integer.parseInt(st.nextToken()), /* colors */
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Integer.parseInt(st.nextToken()) /* chars per pixel */
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return new int[] { Integer.parseInt(st.nextToken()), /* width */
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Integer.parseInt(st.nextToken()), /* height */
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Integer.parseInt(st.nextToken()), /* colors */
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Integer.parseInt(st.nextToken()) /* chars per pixel */
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};
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}
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/**
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* Given a line defining a color/pixel, parses this into an array containing
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* a key and a color
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* @param line Line to parse
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*
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* @param line
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* Line to parse
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* @return Array containing a key (String) and a color (Integer)
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*/
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private Object[] parseColor(String line) {
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// line should look like this
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// "# c #0A0A0A",
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// nuke first and last "
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line = line.substring(1, line.length() - 2);
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// line should look like this:
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// # c #0A0A0A
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String key = line.substring(0, 2);
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String type = line.substring(3, 4);
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String color = line.substring(6);
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// NOTE: will break if the color is something like "black" or "gray50"
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// etc (instead of #rrggbb).
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String key = line.substring(0, format[CHARACTERS_PER_PIXEL]);
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// since we always assume color as type we dont need to read it
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// String type = line.substring(format[CHARACTERS_PER_PIXEL] + 1,
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// format[CHARACTERS_PER_PIXEL] + 2);
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String color = line.substring(format[CHARACTERS_PER_PIXEL] + 4);
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// we always assume type is color, and supplied as #<r><g><b>
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return new Object[] { key, new Integer(Integer.parseInt(color, 16))};
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return new Object[] { key, new Integer(Integer.parseInt(color, 16)) };
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}
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/**
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* Parses an Image line into its byte values
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* @param line Line of chars to parse
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* @param format Format to expext it in
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* @param colors Colors to lookup
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* @param index current index into lines, we've reached
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*
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* @param line
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* Line of chars to parse
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* @param format
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* Format to expext it in
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* @param colors
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* Colors to lookup
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* @param index
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* current index into lines, we've reached
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*/
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private void parseImageLine(String line, int[] format, HashMap colors, int index) {
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private void parseImageLine(String line, int[] format, HashMap colors,
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int index) {
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// offset for next line
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int offset = index * 4 * format[0];
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int offset = index * 4 * format[WIDTH];
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// nuke first "
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line = line.substring(1, line.length());
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// read format[3] characters format[0] times, each iteration is one color
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for (int i = 0; i < format[0]; i++) {
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String key = line.substring(i * 2, (i * 2 + 2));
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// read <format[CHARACTERS_PER_PIXEL]> characters <format[WIDTH]> times,
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// each iteration equals one pixel
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for (int i = 0; i < format[WIDTH]; i++) {
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String key = line
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.substring(
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i * format[CHARACTERS_PER_PIXEL],
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(i * format[CHARACTERS_PER_PIXEL] + format[CHARACTERS_PER_PIXEL]));
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Integer color = (Integer) colors.get(key);
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bytes[offset + (i * 4) ] = (byte) ((color.intValue() & 0x00ff0000) >> 16);
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bytes[offset + ((i * 4) + 1)] = (byte) ((color.intValue() & 0x0000ff00) >> 8);
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bytes[offset + ((i * 4) + 2)] = (byte) ((color.intValue() & 0x000000ff) >> 0); // looks better :)
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bytes[offset + ((i * 4) + 3)] = (byte) 0xff; // always 0xff alpha
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bytes[offset + (i * 4)] = (byte) ((color.intValue() & 0x00ff0000) >> 16);
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bytes[offset + ((i * 4) + 1)] = (byte) ((color.intValue() & 0x0000ff00) >> 8);
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bytes[offset + ((i * 4) + 2)] = (byte) ((color.intValue() & 0x000000ff) >> 0); // looks
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// better
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// :)
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bytes[offset + ((i * 4) + 3)] = (byte) 0xff; // always 0xff alpha
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}
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}
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@ -192,16 +233,16 @@ public class XPMFile {
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try {
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String out = args[0].substring(0, args[0].indexOf(".")) + ".raw";
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XPMFile file = XPMFile.load(args[0]);
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BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(new File(out)));
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BufferedOutputStream bos = new BufferedOutputStream(
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new FileOutputStream(new File(out)));
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bos.write(file.getBytes());
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bos.close();
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//showResult(file.getBytes());
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// showResult(file.getBytes());
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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/*
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private static void showResult(byte[] bytes) {
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final BufferedImage i = new BufferedImage(16, 16, BufferedImage.TYPE_INT_ARGB);
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@ -232,4 +273,4 @@ public class XPMFile {
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frame.setSize(100, 100);
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frame.setVisible(true);
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}*/
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}
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}
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