1 #! /usr/bin/python

     2 #

     3 # Copyright (c) 2009,2010 Nokia Corporation and/or its subsidiary(-ies).

     4 # All rights reserved.

     5 # This component and the accompanying materials are made available

     6 # under the terms of "Eclipse Public License v1.0"

     7 # which accompanies this distribution, and is available

     8 # at the URL "http://www.eclipse.org/legal/epl-v10.html".

     9 #

    10 # Initial Contributors:

    11 # Nokia Corporation - initial contribution.

    12 #

    13 # Contributors:

    14 #

    15 # Description: 

    16 #

    17 

    18 import sys, traceback, os, re, os.path

    19 from optparse import OptionParser

    20 

    21 # JNIEXPORT void JNICALL Java_com_...... (JNIEnv *, ....);

    22 RE_JNIDECL = re.compile(r"JNIEXPORT\s+\w+\s+JNICALL\s+(\w+)\s+ \([\s\w,\*]+\);")

    23 

    24 def getJniFunctions(javah):

    25     ''' Reads all .h files from hDir and returns the header file names and 

    26         JNI functions found on the file '''

    27 

    28     if os.path.isdir(javah):

    29         # Find all headers in javah

    30         headers = [os.path.join(javah, h) 

    31                    for h in os.listdir(javah) if h.endswith(".h")]

    32 

    33     elif os.path.isfile(javah):

    34         headers = [javah]

    35 

    36     else:

    37         raise Exception("Could not find %s" % javah)

    38 

    39     # Find all JNI functions in header files

    40     jniFunctions = []

    41     for headerFile in headers:

    42         content = open(headerFile).read()

    43         jniFunctions.extend(RE_JNIDECL.findall(content))

    44 

    45     return [os.path.basename(h) for h in headers], jniFunctions

    46 

    47 def writeLookup(lookupFile, headers, jniFunctions, jxeLookup):

    48     ''' Writes the lookupfile, generated from given headers and jni functions '''

    49 

    50     # File header

    51     content = r'''/*

    52  * Description: Automatically generated JNI lookup file. Do not modify manually.

    53  */

    54 

    55 #include "javasymbianoslayer.h"

    56 typedef void (*TFunc)();

    57 '''

    58 

    59     if jxeLookup:

    60         # Add the J9GetJXE getter as part of JNI functions

    61         jniFunctions.append("J9GetJXE")

    62 

    63         content = content + r'''

    64 #include "j9comp.h"

    65 extern "C" {

    66     extern const U_64 j9Jar[];

    67 

    68     void* J9GetJXE() {

    69         return const_cast<void*>(reinterpret_cast<const void*>(j9Jar));

    70     }

    71 }

    72 '''

    73 

    74     # Header includes

    75     content = content + "\n".join(['#include "%s"' % h for h in headers])

    76 

    77     # Sorted lookup table

    78     content = content + "\nconst FuncTable funcTable[] = {\n"

    79     content = content + ",\n".join(['   { "%s", (unsigned int) %s}' % 

    80                                     (jni, jni) for jni in sorted(jniFunctions)])

    81     content = content + "\n};\n"

    82 

    83     # Jnilookup method

    84     content = content + r'''

    85 IMPORT_C TFunc jni_lookup(const char* name);

    86 EXPORT_C TFunc jni_lookup(const char* name) {

    87     return (TFunc)findMethod(name, funcTable, sizeof(funcTable)/sizeof(FuncTable));

    88 }

    89 '''

    90 

    91     # Write file

    92     open(lookupFile, "w").write(content)

    93 

    94 

    95 def main():

    96     parser = OptionParser(usage = "%prog [options] javah-file-or-dir lookup-source.cpp")

    97     parser.add_option("--nojxe", dest = "jxeLookup",

    98                       help = "Do not generate JXE lookup code",

    99                       action = "store_false", default = True)

   100     (options, args) = parser.parse_args()

   101     try:

   102         javah, lookupFile = args

   103 

   104         headers, jniFunctions = getJniFunctions(javah)

   105         writeLookup(lookupFile, headers, jniFunctions, options.jxeLookup)

   106         

   107     except:

   108         print "Error during lookup file generation!"

   109         traceback.print_exc()

   110         sys.exit(-1)

   111 

   112 if __name__ == "__main__":

   113     main()