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amalgamate.py
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amalgamate.py
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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( str.encode(self.get_value(), 'UTF-8') )
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_AMALGAMATION" )
header.add_file( "include/json/version.h" )
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_file( "include/json/assertions.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_AMALGAMATION" )
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( "" )
lib_json = "src/lib_json"
source.add_file( os.path.join(lib_json, "json_tool.h") )
source.add_file( os.path.join(lib_json, "json_reader.cpp") )
source.add_file( os.path.join(lib_json, "json_batchallocator.h") )
source.add_file( os.path.join(lib_json, "json_valueiterator.inl") )
source.add_file( os.path.join(lib_json, "json_value.cpp") )
source.add_file( os.path.join(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()