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+/*
+ * 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 Pattern funcPattern =
+ Pattern.compile("^(GLAPI|GL_API|GL_APICALL|EGLAPI|extern)?(\\s*)(\\w+)(\\*)?(\\s+)(GLAPIENTRY|GL_APIENTRY|APIENTRY|EGLAPIENTRY|WINAPI)?(\\s*)([ew]?gl\\w+)\\s?(\\(.*)");
+ protected static Pattern associationPattern =
+ Pattern.compile("\\#ifndef ([EW]?GL[X]?_[A-Za-z0-9_]+)");
+ protected static Pattern definePattern =
+ Pattern.compile("\\#define ([EW]?GL[X]?_[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 declarationToExtensionMap = new HashMap();
+ // Maps extension names to Set of identifiers (both #defines and
+ // function names) this extension declares
+ protected Map/*<String, Set<String>*/ extensionToDeclarationMap = new HashMap();
+
+ /**
+ * 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();
+ 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)
+ {
+ StringBuffer buf = new StringBuffer("{ ");
+ 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);
+ }
+ }
+
+
+ /** 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) {
+ // 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(8);
+ } else if ((m = definePattern.matcher(line)).matches()) {
+ identifier = m.group(1);
+ } else if (line.startsWith("#endif")) {
+ activeAssociation = null;
+ }
+ if ((identifier != null) &&
+ (activeAssociation != null) &&
+ // Handles #ifndef GL_... #define GL_...
+ !identifier.equals(activeAssociation)) {
+ addAssociation(identifier, activeAssociation);
+ // System.err.println(" ADDING ASSOCIATION: " + identifier + " " + activeAssociation);
+ }
+ } else if ((m = associationPattern.matcher(line)).matches()) {
+ // found a new #ifndef GL_XXX block
+ activeAssociation = m.group(1);
+
+ // System.err.println("FOUND NEW ASSOCIATION BLOCK: " + activeAssociation);
+ }
+ }
+ reader.close();
+ }
+
+ public void dump() {
+ for (Iterator i1 = extensionToDeclarationMap.keySet().iterator(); i1.hasNext(); ) {
+ String name = (String) i1.next();
+ Set decls = (Set) extensionToDeclarationMap.get(name);
+ System.out.println(name + ":");
+ List l = new ArrayList();
+ l.addAll(decls);
+ Collections.sort(l);
+ for (Iterator i2 = l.iterator(); i2.hasNext(); ) {
+ System.out.println(" " + (String) i2.next());
+ }
+ }
+ }
+
+ public String getExtension(String identifier) {
+ return (String) declarationToExtensionMap.get(identifier);
+ }
+
+ public Set/*<String>*/ getDeclarations(String extension) {
+ return (Set) 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.sun.gluegen.runtime.opengl.GLExtensionNames.getFuncNamePermutationNumber(glFunctionName);");
+ output.println(" for(int i = 0; null==mappedName && i < funcNamePermNum; i++) {");
+ output.println(" String tmp = com.sun.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 (Iterator iter = declarationToExtensionMap.keySet().iterator(); iter.hasNext(); ) {
+ String name = (String) iter.next();
+ if (!name.startsWith("GL")) {
+ ++maxCapacity;
+ }
+ }
+
+ output.println(" funcToAssocMap = new HashMap(" + maxCapacity + "); // approximate max capacity");
+ output.println(" String group;");
+ ArrayList sets = new ArrayList(extensionToDeclarationMap.keySet());
+ Collections.sort(sets);
+ for (Iterator iter = sets.iterator(); iter.hasNext(); ) {
+ String groupName = (String) iter.next();
+ Set funcs = (Set) extensionToDeclarationMap.get(groupName);
+ List l = new ArrayList();
+ l.addAll(funcs);
+ Collections.sort(l);
+ Iterator funcIter = l.iterator();
+ boolean printedHeader = false;
+ while (funcIter.hasNext()) {
+ String funcName = (String)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 = (Set) extensionToDeclarationMap.get(association);
+ if (identifiers == null) {
+ identifiers = new HashSet/*<String>*/();
+ extensionToDeclarationMap.put(association, identifiers);
+ }
+ identifiers.add(identifier);
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 10:24:05 +0000