1/*
2 * Copyright 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17import java.io.BufferedReader;
18import java.io.File;
19import java.io.FileOutputStream;
20import java.io.FileReader;
21import java.io.IOException;
22import java.io.PrintStream;
23
24public class GenerateEGL {
25
26    private static void copy(String filename, PrintStream out) throws IOException {
27        BufferedReader br = new BufferedReader(new FileReader(filename));
28        String s;
29        while ((s = br.readLine()) != null) {
30            out.println(s);
31        }
32    }
33
34    private static void emit(EGLCodeEmitter emitter,
35                             BufferedReader specReader,
36                             PrintStream glStream,
37                             PrintStream cStream) throws Exception {
38        String s = null;
39        while ((s = specReader.readLine()) != null) {
40            if (s.trim().startsWith("//")) {
41                continue;
42            }
43
44            CFunc cfunc = CFunc.parseCFunc(s);
45
46            String fname = cfunc.getName();
47            String stubRoot = "stubs/egl/" + fname;
48            String javaPath = stubRoot + ".java";
49            File f = new File(javaPath);
50            if (f.exists()) {
51                System.out.println("Special-casing function " + fname);
52                copy(javaPath, glStream);
53                copy(stubRoot + ".cpp", cStream);
54
55                // Register native function names
56                // This should be improved to require fewer discrete files
57                String filename = stubRoot + ".nativeReg";
58                BufferedReader br =
59                    new BufferedReader(new FileReader(filename));
60                String nfunc;
61                while ((nfunc = br.readLine()) != null) {
62                    emitter.addNativeRegistration(nfunc);
63                }
64            } else {
65                emitter.emitCode(cfunc, s);
66            }
67        }
68    }
69
70    public static void main(String[] args) throws Exception {
71        int aidx = 0;
72        while ((aidx < args.length) && (args[aidx].charAt(0) == '-')) {
73            switch (args[aidx].charAt(1)) {
74            default:
75                System.err.println("Unknown flag: " + args[aidx]);
76                System.exit(1);
77            }
78
79            aidx++;
80        }
81
82        BufferedReader checksReader =
83            new BufferedReader(new FileReader("specs/egl/checks.spec"));
84        ParameterChecker checker = new ParameterChecker(checksReader);
85
86
87        BufferedReader specReader =
88                new BufferedReader(new FileReader("specs/egl/EGL14.spec"));
89
90        String egljFilename = "android/opengl/EGL14.java";
91        String eglcFilename = "android_opengl_EGL14.cpp";
92        PrintStream egljStream =
93            new PrintStream(new FileOutputStream("out/" + egljFilename));
94        PrintStream eglcStream =
95            new PrintStream(new FileOutputStream("out/" + eglcFilename));
96        egljStream.println("/*");
97        eglcStream.println("/*");
98        copy("stubs/egl/EGL14Header.java-if", egljStream);
99        copy("stubs/egl/EGL14cHeader.cpp", eglcStream);
100        EGLCodeEmitter emitter = new EGLCodeEmitter(
101                "android/opengl/EGL14",
102                checker, egljStream, eglcStream);
103        emit(emitter, specReader, egljStream, eglcStream);
104        emitter.emitNativeRegistration("register_android_opengl_jni_EGL14");
105        egljStream.println("}");
106        egljStream.close();
107        eglcStream.close();
108    }
109}
110