build/buildutils/generates60lookup.py
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 27 Apr 2010 16:30:29 +0300
branchRCL_3
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permissions -rw-r--r--
Revision: v2.1.22 Kit: 201017
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#! /usr/bin/python
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#
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# Copyright (c) 2009,2010 Nokia Corporation and/or its subsidiary(-ies).
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# All rights reserved.
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# This component and the accompanying materials are made available
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# under the terms of "Eclipse Public License v1.0"
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# which accompanies this distribution, and is available
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# at the URL "http://www.eclipse.org/legal/epl-v10.html".
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#
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# Initial Contributors:
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# Nokia Corporation - initial contribution.
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#
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# Contributors:
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#
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# Description: 
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#
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import sys, traceback, os, re, os.path
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from optparse import OptionParser
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# JNIEXPORT void JNICALL Java_com_...... (JNIEnv *, ....);
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RE_JNIDECL = re.compile(r"JNIEXPORT\s+\w+\s+JNICALL\s+(\w+)\s+ \([\s\w,\*]+\);")
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def getJniFunctions(javah):
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    ''' Reads all .h files from hDir and returns the header file names and 
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        JNI functions found on the file '''
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    if os.path.isdir(javah):
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        # Find all headers in javah
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        headers = [os.path.join(javah, h) 
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                   for h in os.listdir(javah) if h.endswith(".h")]
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    elif os.path.isfile(javah):
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        headers = [javah]
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    else:
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        raise Exception("Could not find %s" % javah)
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    # Find all JNI functions in header files
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    jniFunctions = []
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    for headerFile in headers:
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        content = open(headerFile).read()
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        jniFunctions.extend(RE_JNIDECL.findall(content))
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    return [os.path.basename(h) for h in headers], jniFunctions
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def writeLookup(lookupFile, headers, jniFunctions, jxeLookup):
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    ''' Writes the lookupfile, generated from given headers and jni functions '''
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    # File header
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    content = r'''/*
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 * Description: Automatically generated JNI lookup file. Do not modify manually.
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 */
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#include "javasymbianoslayer.h"
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typedef void (*TFunc)();
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'''
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    if jxeLookup:
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        # Add the J9GetJXE getter as part of JNI functions
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        jniFunctions.append("J9GetJXE")
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        content = content + r'''
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#include "j9comp.h"
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extern "C" {
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    extern const U_64 j9Jar[];
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    void* J9GetJXE() {
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        return const_cast<void*>(reinterpret_cast<const void*>(j9Jar));
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    }
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}
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'''
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    # Header includes
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    content = content + "\n".join(['#include "%s"' % h for h in headers])
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    # Sorted lookup table
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    content = content + "\nconst FuncTable funcTable[] = {\n"
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    content = content + ",\n".join(['   { "%s", (unsigned int) %s}' % 
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                                    (jni, jni) for jni in sorted(jniFunctions)])
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    content = content + "\n};\n"
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    # Jnilookup method
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    content = content + r'''
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IMPORT_C TFunc jni_lookup(const char* name);
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EXPORT_C TFunc jni_lookup(const char* name) {
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    return (TFunc)findMethod(name, funcTable, sizeof(funcTable)/sizeof(FuncTable));
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}
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'''
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    # Write file
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    open(lookupFile, "w").write(content)
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def main():
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    parser = OptionParser(usage = "%prog [options] javah-file-or-dir lookup-source.cpp")
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    parser.add_option("--nojxe", dest = "jxeLookup",
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                      help = "Do not generate JXE lookup code",
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                      action = "store_false", default = True)
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    (options, args) = parser.parse_args()
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    try:
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        javah, lookupFile = args
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        headers, jniFunctions = getJniFunctions(javah)
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        writeLookup(lookupFile, headers, jniFunctions, options.jxeLookup)
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    except:
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        print "Error during lookup file generation!"
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        traceback.print_exc()
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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        sys.exit(-1)
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if __name__ == "__main__":
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    main()