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"""Amalgate json-cpp library sources into a single source and header file.
Requires Python 2.6
Example of invocation (must be invoked from json-cpp top directory):
python amalgate.py
"""
import os
import os.path
import sys
class AmalgamationFile:
def __init__( self, top_dir ):
self.top_dir = top_dir
self.blocks = []
def add_text( self, text ):
if not text.endswith( '\n' ):
text += '\n'
self.blocks.append( text )
def add_file( self, relative_input_path, wrap_in_comment=False ):
def add_marker( prefix ):
self.add_text( '' )
self.add_text( '// ' + '/'*70 )
self.add_text( '// %s of content of file: %s' % (prefix, relative_input_path.replace('\\','/')) )
self.add_text( '// ' + '/'*70 )
self.add_text( '' )
add_marker( 'Beginning' )
f = open( os.path.join( self.top_dir, relative_input_path ), 'rt' )
content = f.read()
if wrap_in_comment:
content = '/*\n' + content + '\n*/'
self.add_text( content )
f.close()
add_marker( 'End' )
self.add_text( '\n\n\n\n' )
def get_value( self ):
return ''.join( self.blocks ).replace('\r\n','\n')
def write_to( self, output_path ):
output_dir = os.path.dirname( output_path )
if output_dir and not os.path.isdir( output_dir ):
os.makedirs( output_dir )
f = open( output_path, 'wb' )
f.write( self.get_value() )
f.close()
def amalgamate_source( source_top_dir=None,
target_source_path=None,
header_include_path=None ):
"""Produces amalgated source.
Parameters:
source_top_dir: top-directory
target_source_path: output .cpp path
header_include_path: generated header path relative to target_source_path.
"""
print 'Amalgating header...'
header = AmalgamationFile( source_top_dir )
header.add_text( '/// Json-cpp amalgated header (http://jsoncpp.sourceforge.net/).' )
header.add_text( '/// It is intented to be used with #include <%s>' % header_include_path )
header.add_file( 'LICENSE', wrap_in_comment=True )
header.add_text( '#ifndef JSON_AMALGATED_H_INCLUDED' )
header.add_text( '# define JSON_AMALGATED_H_INCLUDED' )
header.add_text( '/// If defined, indicates that the source file is amalgated' )
header.add_text( '/// to prevent private header inclusion.' )
header.add_text( '#define JSON_IS_AMALGATED' )
header.add_file( 'include/json/config.h' )
header.add_file( 'include/json/forwards.h' )
header.add_file( 'include/json/features.h' )
header.add_file( 'include/json/value.h' )
header.add_file( 'include/json/reader.h' )
header.add_file( 'include/json/writer.h' )
header.add_text( '#endif //ifndef JSON_AMALGATED_H_INCLUDED' )
target_header_path = os.path.join( os.path.dirname(target_source_path), header_include_path )
print 'Writing amalgated header to %r' % target_header_path
header.write_to( target_header_path )
base, ext = os.path.splitext( header_include_path )
forward_header_include_path = base + '-forwards' + ext
print 'Amalgating forward header...'
header = AmalgamationFile( source_top_dir )
header.add_text( '/// Json-cpp amalgated forward header (http://jsoncpp.sourceforge.net/).' )
header.add_text( '/// It is intented to be used with #include <%s>' % forward_header_include_path )
header.add_text( '/// This header provides forward declaration for all JsonCpp types.' )
header.add_file( 'LICENSE', wrap_in_comment=True )
header.add_text( '#ifndef JSON_FORWARD_AMALGATED_H_INCLUDED' )
header.add_text( '# define JSON_FORWARD_AMALGATED_H_INCLUDED' )
header.add_text( '/// If defined, indicates that the source file is amalgated' )
header.add_text( '/// to prevent private header inclusion.' )
header.add_text( '#define JSON_IS_AMALGATED' )
header.add_file( 'include/json/config.h' )
header.add_file( 'include/json/forwards.h' )
header.add_text( '#endif //ifndef JSON_FORWARD_AMALGATED_H_INCLUDED' )
target_forward_header_path = os.path.join( os.path.dirname(target_source_path),
forward_header_include_path )
print 'Writing amalgated forward header to %r' % target_forward_header_path
header.write_to( target_forward_header_path )
print 'Amalgating source...'
source = AmalgamationFile( source_top_dir )
source.add_text( '/// Json-cpp amalgated source (http://jsoncpp.sourceforge.net/).' )
source.add_text( '/// It is intented to be used with #include <%s>' % header_include_path )
source.add_file( 'LICENSE', wrap_in_comment=True )
source.add_text( '' )
source.add_text( '#include <%s>' % header_include_path )
source.add_text( '' )
source.add_file( 'src/lib_json\json_tool.h' )
source.add_file( 'src/lib_json\json_reader.cpp' )
source.add_file( 'src/lib_json\json_batchallocator.h' )
source.add_file( 'src/lib_json\json_valueiterator.inl' )
source.add_file( 'src/lib_json\json_value.cpp' )
source.add_file( 'src/lib_json\json_writer.cpp' )
print 'Writing amalgated source to %r' % target_source_path
source.write_to( target_source_path )
def main():
usage = """%prog [options]
Generate a single amalgated source and header file from the sources.
"""
from optparse import OptionParser
parser = OptionParser(usage=usage)
parser.allow_interspersed_args = False
parser.add_option('-s', '--source', dest="target_source_path", action='store', default='dist/jsoncpp.cpp',
help="""Output .cpp source path. [Default: %default]""")
parser.add_option('-i', '--include', dest="header_include_path", action='store', default='json/json.h',
help="""Header include path. Used to include the header from the amalgated source file. [Default: %default]""")
parser.add_option('-t', '--top-dir', dest="top_dir", action='store', default=os.getcwd(),
help="""Source top-directory. [Default: %default]""")
parser.enable_interspersed_args()
options, args = parser.parse_args()
msg = amalgamate_source( source_top_dir=options.top_dir,
target_source_path=options.target_source_path,
header_include_path=options.header_include_path )
if msg:
sys.stderr.write( msg + '\n' )
sys.exit( 1 )
else:
print 'Source succesfully amalagated'
if __name__ == '__main__':
main()
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