diff options
Diffstat (limited to 'src/java/com/sun/gluegen/opengl/BuildStaticGLInfo.java')
| -rw-r--r-- | src/java/com/sun/gluegen/opengl/BuildStaticGLInfo.java | 346 |
1 files changed, 346 insertions, 0 deletions
diff --git a/src/java/com/sun/gluegen/opengl/BuildStaticGLInfo.java b/src/java/com/sun/gluegen/opengl/BuildStaticGLInfo.java new file mode 100644 index 000000000..2be5519fe --- /dev/null +++ b/src/java/com/sun/gluegen/opengl/BuildStaticGLInfo.java @@ -0,0 +1,346 @@ +/* + * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * - Redistribution of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * - Redistribution 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. + * + * Neither the name of Sun Microsystems, Inc. or the names of + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * This software is provided "AS IS," without a warranty of any kind. ALL + * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, + * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A + * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN + * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR + * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR + * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR + * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR + * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE + * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, + * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF + * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. + * + * You acknowledge that this software is not designed or intended for use + * in the design, construction, operation or maintenance of any nuclear + * facility. + * + * Sun gratefully acknowledges that this software was originally authored + * and developed by Kenneth Bradley Russell and Christopher John Kline. + */ + +package com.sun.gluegen.opengl; + +import java.io.*; +import java.util.*; +import java.util.regex.*; + + /** + * Builds the StaticGLInfo class from the OpenGL header files (i.e., gl.h + * and glext.h) whose paths were passed as arguments to {@link + * #main(String[])}. + * + * It relies upon the assumption that a function's membership is scoped by + * preprocessor blocks in the header files that match the following pattern: + * <br> + * + * <pre> + * + * #ifndef GL_XXXX + * GLAPI <returnType> <APIENTRY|GLAPIENTRY> glFuncName(<params>) + * #endif GL_XXXX + * + * </pre> + * + * For example, if it parses the following data: + * + * <pre> + * + * #ifndef GL_VERSION_1_3 + * GLAPI void APIENTRY glActiveTexture (GLenum); + * GLAPI void APIENTRY glMultiTexCoord1dv (GLenum, const GLdouble *); + * GLAPI void <APIENTRY|GLAPIENTRY> glFuncName(<params>) + * #endif GL_VERSION_1_3 + * + * #ifndef GL_ARB_texture_compression + * GLAPI void APIENTRY glCompressedTexImage3DARB (GLenum, GLint, GLenum, GLsizei, GLsizei, GLsizei, GLint, GLsizei, const GLvoid *); + * GLAPI void APIENTRY glCompressedTexImage2DARB (GLenum, GLint, GLenum, GLsizei, GLsizei, GLint, GLsizei, const GLvoid *); + * #endif + * + * </pre> + * + * It will associate + * <code> glActiveTexture </code> and + * <code> glMultiTexCoord1dv </code> + * with the symbol + * <code> GL_VERSION_1_3 </code>, + * and associate + * <code> glCompressedTexImage2DARB </code> and + * <code> glCompressedTexImage3DARB </code> + * with the symbol + * <code> GL_ARB_texture_compression </code>. + * */ +public class BuildStaticGLInfo { + + // Handles function pointer + protected static int funcIdentifierGroup = 10; + protected static Pattern funcPattern = + Pattern.compile("^(GLAPI|GL_API|GL_APICALL|EGLAPI|extern)?(\\s*)((unsigned|const)\\s+)?(\\w+)(\\s*\\*)?(\\s+)(GLAPIENTRY|GL_APIENTRY|APIENTRY|EGLAPIENTRY|WINAPI)?(\\s*)([ew]?gl\\w+)\\s?(\\(.*)"); + + protected static Pattern associationPattern = + Pattern.compile("\\#ifndef ([CEW]?GL[XU]?_[A-Za-z0-9_]+)(.*)"); + + protected static int defineIdentifierGroup = 1; + protected static Pattern definePattern = + Pattern.compile("\\#define ([CEW]?GL[XU]?_[A-Za-z0-9_]+)\\s*([A-Za-z0-9_]+)(.*)"); + + // Maps function / #define names to the names of the extensions they're declared in + protected Map<String, String> declarationToExtensionMap = new HashMap<String, String>(); + + // Maps extension names to Set of identifiers (both #defines and + // function names) this extension declares + protected Map<String, Set<String>> extensionToDeclarationMap = new HashMap<String, Set<String>>(); + protected boolean debug = false; + + /** + * The first argument is the package to which the StaticGLInfo class + * belongs, the second is the path to the directory in which that package's + * classes reside, and the remaining arguments are paths to the C header + * files that should be parsed + */ + public static void main(String[] args) throws IOException { + if (args.length > 0 && args[0].equals("-test")) { + BuildStaticGLInfo builder = new BuildStaticGLInfo(); + builder.setDebug(true); + String[] newArgs = new String[args.length - 1]; + System.arraycopy(args, 1, newArgs, 0, args.length - 1); + builder.parse(newArgs); + builder.dump(); + System.exit(0); + } + + String packageName = args[0]; + String packageDir = args[1]; + + String[] cHeaderFilePaths = new String[args.length - 2]; + System.arraycopy(args, 2, cHeaderFilePaths, 0, cHeaderFilePaths.length); + + BuildStaticGLInfo builder = new BuildStaticGLInfo(); + try { + builder.parse(cHeaderFilePaths); + + File file = new File(packageDir + File.separatorChar + "StaticGLInfo.java"); + String parentDir = file.getParent(); + if (parentDir != null) { + File pDirFile = new File(parentDir); + pDirFile.mkdirs(); + } + + PrintWriter writer = new PrintWriter(new BufferedWriter(new FileWriter(file))); + builder.emitJavaCode(writer, packageName); + + writer.flush(); + writer.close(); + } catch (Exception e) { + StringBuilder buf = new StringBuilder("{ "); + for (int i = 0; i < cHeaderFilePaths.length; ++i) { + buf.append(cHeaderFilePaths[i]); + buf.append(" "); + } + buf.append('}'); + throw new RuntimeException( + "Error building StaticGLInfo.java from " + buf.toString(), e); + } + } + + public void setDebug(boolean v) { + debug = v; + } + + /** Parses the supplied C header files and adds the function + associations contained therein to the internal map. */ + public void parse(String[] cHeaderFilePaths) throws IOException { + for (int i = 0; i < cHeaderFilePaths.length; i++) { + parse(cHeaderFilePaths[i]); + } + } + + /** Parses the supplied C header file and adds the function + associations contained therein to the internal map. */ + public void parse(String cHeaderFilePath) throws IOException { + BufferedReader reader = new BufferedReader(new FileReader(cHeaderFilePath)); + String line, activeAssociation = null; + Matcher m = null; + while ((line = reader.readLine()) != null) { + int type = 0; // 1-define, 2-function + // see if we're inside a #ifndef GL_XXX block and matching a function + if (activeAssociation != null) { + String identifier = null; + if ((m = funcPattern.matcher(line)).matches()) { + identifier = m.group(funcIdentifierGroup).trim(); + type = 2; + } else if ((m = definePattern.matcher(line)).matches()) { + identifier = m.group(defineIdentifierGroup).trim(); + type = 1; + } else if (line.startsWith("#endif")) { + if (debug) { + System.err.println("END ASSOCIATION BLOCK: <" + activeAssociation + ">"); + } + activeAssociation = null; + } + if ((identifier != null) + && (activeAssociation != null) + && // Handles #ifndef GL_... #define GL_... + !identifier.equals(activeAssociation)) { + addAssociation(identifier, activeAssociation); + if (debug) { + System.err.println(" ADDING ASSOCIATION: <" + identifier + "> <" + activeAssociation + "> ; type " + type); + } + } + } else if ((m = associationPattern.matcher(line)).matches()) { + // found a new #ifndef GL_XXX block + activeAssociation = m.group(1).trim(); + + if (debug) { + System.err.println("BEGIN ASSOCIATION BLOCK: <" + activeAssociation + ">"); + } + } + } + reader.close(); + } + + public void dump() { + for (String name : extensionToDeclarationMap.keySet()) { + Set<String> decls = extensionToDeclarationMap.get(name); + System.out.println("<" + name + "> :"); + List<String> l = new ArrayList<String>(); + l.addAll(decls); + Collections.sort(l); + for (String str : l) { + System.out.println(" <" + str + ">"); + } + } + } + + public String getExtension(String identifier) { + return declarationToExtensionMap.get(identifier); + } + + public Set<String> getDeclarations(String extension) { + return extensionToDeclarationMap.get(extension); + } + + public Set<String> getExtensions() { + return extensionToDeclarationMap.keySet(); + } + + public void emitJavaCode(PrintWriter output, String packageName) { + output.println("package " + packageName + ";"); + output.println(); + output.println("import java.util.*;"); + output.println(); + output.println("public final class StaticGLInfo"); + output.println("{"); + + output.println(" // maps function names to the extension string or OpenGL"); + output.println(" // specification version string to which they correspond."); + output.println(" private static HashMap funcToAssocMap;"); + output.println(); + + output.println(" /**"); + output.println(" * Returns the OpenGL extension string or GL_VERSION string with which the"); + output.println(" * given function is associated. <P>"); + output.println(" *"); + output.println(" * If the"); + output.println(" * function is part of the OpenGL core, the returned value will be"); + output.println(" * GL_VERSION_XXX where XXX represents the OpenGL version of which the"); + output.println(" * function is a member (XXX will be of the form \"A\" or \"A_B\" or \"A_B_C\";"); + output.println(" * e.g., GL_VERSION_1_2_1 for OpenGL version 1.2.1)."); + output.println(" *"); + output.println(" * If the function is an extension function, the returned value will the"); + output.println(" * OpenGL extension string for the extension to which the function"); + output.println(" * corresponds. For example, if glLoadTransposeMatrixfARB is the argument,"); + output.println(" * GL_ARB_transpose_matrix will be the value returned."); + output.println(" * Please see http://oss.sgi.com/projects/ogl-sample/registry/index.html for"); + output.println(" * a list of extension names and the functions they expose."); + output.println(" *"); + output.println(" * If the function specified is not part of any known OpenGL core version or"); + output.println(" * extension, then NULL will be returned."); + output.println(" */"); + output.println(" public static String getFunctionAssociation(String glFunctionName)"); + output.println(" {"); + output.println(" String mappedName = null;"); + output.println(" int funcNamePermNum = com.jogamp.gluegen.runtime.opengl.GLExtensionNames.getFuncNamePermutationNumber(glFunctionName);"); + output.println(" for(int i = 0; null==mappedName && i < funcNamePermNum; i++) {"); + output.println(" String tmp = com.jogamp.gluegen.runtime.opengl.GLExtensionNames.getFuncNamePermutation(glFunctionName, i);"); + output.println(" try {"); + output.println(" mappedName = (String)funcToAssocMap.get(tmp);"); + output.println(" } catch (Exception e) { }"); + output.println(" }"); + output.println(" return mappedName;"); + output.println(" }"); + output.println(); + + output.println(" static"); + output.println(" {"); + + // Compute max capacity + int maxCapacity = 0; + for (String name : declarationToExtensionMap.keySet()) { + if (!name.startsWith("GL")) { + ++maxCapacity; + } + } + + output.println(" funcToAssocMap = new HashMap(" + maxCapacity + "); // approximate max capacity"); + output.println(" String group;"); + ArrayList<String> sets = new ArrayList<String>(extensionToDeclarationMap.keySet()); + Collections.sort(sets); + for (String groupName : sets) { + Set<String> funcs = extensionToDeclarationMap.get(groupName); + List<String> l = new ArrayList<String>(); + l.addAll(funcs); + Collections.sort(l); + Iterator<String> funcIter = l.iterator(); + boolean printedHeader = false; + while (funcIter.hasNext()) { + String funcName = funcIter.next(); + if (!funcName.startsWith("GL")) { + if (!printedHeader) { + output.println(); + output.println(" //----------------------------------------------------------------"); + output.println(" // " + groupName); + output.println(" //----------------------------------------------------------------"); + output.println(" group = \"" + groupName + "\";"); + printedHeader = true; + } + + output.println(" funcToAssocMap.put(\"" + funcName + "\", group);"); + } + } + } + output.println(" }"); + output.println("} // end class StaticGLInfo"); + } + + //---------------------------------------------------------------------- + // Internals only below this point + // + protected void addAssociation(String identifier, String association) { + declarationToExtensionMap.put(identifier, association); + Set<String> identifiers = extensionToDeclarationMap.get(association); + if (identifiers == null) { + identifiers = new HashSet<String>(); + extensionToDeclarationMap.put(association, identifiers); + } + identifiers.add(identifier); + } +} |