"""Amalgate json-cpp library sources into a single source and header file. Works with python2.6+ and python3.4+. 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 intended 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/allocator.h") # Not available here. 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 intended 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 intended 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(""" #ifndef JSON_IS_AMALGAMATION #error "Compile with -I PATH_TO_JSON_DIRECTORY" #endif """) 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_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()