#!/usr/bin/python # # Parses debian_config.json and generates appropriate templates # Where optional defaults exist, they are defined in the template_dict # of the appropriate generation function import os import sys import json import datetime FILE_CHANGELOG = 'changelog' FILE_CONTROL = 'control' FILE_COPYRIGHT = 'copyright' FILE_SYMLINK_FORMAT = '{package_name}.links' PACKAGE_ROOT_FORMAT = "usr/share/{package_name}" CHANGELOG_DATE_FORMAT = "%a, %d %b %Y %H:%M:%S %z" # UTC Timezone for Changelog date class UTC(datetime.tzinfo): def utcoffset(self, dt): return datetime.timedelta(0) def tzname(self, dt): return "UTC" def dst(self, dt): return datetime.timedelta(0) # Generation Functions def generate_and_write_all(config_data, template_dir, output_dir, package_version=None): try: changelog_contents = generate_changelog(config_data, template_dir, package_version=package_version) control_contents = generate_control(config_data, template_dir) copyright_contents = generate_copyright(config_data, template_dir) symlink_contents = generate_symlinks(config_data) except Exception as exc: print exc help_and_exit("Error: Generation Failed, check your config file.") write_file(changelog_contents, output_dir, FILE_CHANGELOG) write_file(control_contents, output_dir, FILE_CONTROL) write_file(copyright_contents, output_dir, FILE_COPYRIGHT) # Symlink File is optional if symlink_contents: symlink_filename = get_symlink_filename(config_data) write_file(symlink_contents, output_dir, symlink_filename) return def generate_changelog(config_data, template_dir, package_version=None): template = get_template(template_dir, FILE_CHANGELOG) release_data = config_data["release"] # Allow for Version Override config_package_version = release_data["package_version"] if package_version is None: package_version = config_package_version template_dict = dict(\ PACKAGE_VERSION=package_version, PACKAGE_REVISION=release_data["package_revision"], CHANGELOG_MESSAGE=release_data["changelog_message"], URGENCY=release_data.get("urgency", "low"), PACKAGE_NAME=config_data["package_name"], MAINTAINER_NAME=config_data["maintainer_name"], MAINTAINER_EMAIL=config_data["maintainer_email"], DATE=datetime.datetime.now(UTC()).strftime(CHANGELOG_DATE_FORMAT) ) contents = template.format(**template_dict) return contents def generate_control(config_data, template_dir): template = get_template(template_dir, FILE_CONTROL) dependency_data = config_data.get("debian_dependencies", None) dependency_str = get_dependendent_packages_string(dependency_data) # Default to empty dict, so we don't explode on nested optional values control_data = config_data.get("control", dict()) template_dict = dict(\ SHORT_DESCRIPTION=config_data["short_description"], LONG_DESCRIPTION=config_data["long_description"], HOMEPAGE=config_data.get("homepage", ""), SECTION=control_data.get("section", "misc"), PRIORITY=control_data.get("priority", "low"), ARCH=control_data.get("architecture", "all"), DEPENDENT_PACKAGES=dependency_str, PACKAGE_NAME=config_data["package_name"], MAINTAINER_NAME=config_data["maintainer_name"], MAINTAINER_EMAIL=config_data["maintainer_email"] ) contents = template.format(**template_dict) return contents def generate_copyright(config_data, template_dir): template = get_template(template_dir, FILE_COPYRIGHT) license_data = config_data["license"] template_dict = dict(\ COPYRIGHT_TEXT=config_data["copyright"], LICENSE_NAME=license_data["type"], LICENSE_TEXT=license_data["full_text"] ) contents = template.format(**template_dict) return contents def generate_symlinks(config_data): symlink_entries = [] package_root_path = get_package_root(config_data) symlink_data = config_data.get("symlinks", dict()) for package_rel_path, symlink_path in symlink_data.iteritems(): package_abs_path = os.path.join(package_root_path, package_rel_path) symlink_entries.append( '%s %s' % (package_abs_path, symlink_path) ) return '\n'.join(symlink_entries) # Helper Functions def get_package_root(config_data): package_name = config_data["package_name"] return PACKAGE_ROOT_FORMAT.format(package_name=package_name) def get_symlink_filename(config_data): package_name = config_data["package_name"] return FILE_SYMLINK_FORMAT.format(package_name=package_name) def get_dependendent_packages_string(debian_dependency_data): if debian_dependency_data is None: return "" dependencies = [] for debian_package_name in debian_dependency_data: dep_str = debian_package_name if debian_dependency_data[debian_package_name].get("package_version", None): debian_package_version = debian_dependency_data[debian_package_name].get("package_version") dep_str += " (>= %s)" % debian_package_version dependencies.append(dep_str) # Leading Comma is important here return ', ' + ', '.join(dependencies) def load_json(json_path): json_data = None with open(json_path, 'r') as json_file: json_data = json.load(json_file) return json_data def get_template(template_dir, name): path = os.path.join(template_dir, name) template_contents = None with open(path, 'r') as template_file: template_contents = template_file.read() return template_contents def write_file(contents, output_dir, name): path = os.path.join(output_dir, name) with open(path, 'w') as out_file: out_file.write(contents) return # Tool Functions def help_and_exit(msg): print msg sys.exit(1) def print_usage(): print "Usage: config_template_generator.py [config file path] [template directory path] [output directory] (package version)" def parse_and_validate_args(): if len(sys.argv) < 4: print_usage() help_and_exit("Error: Invalid Arguments") config_path = sys.argv[1] template_dir = sys.argv[2] output_dir = sys.argv[3] version_override = None if len(sys.argv) >= 5: version_override = sys.argv[4] if not os.path.isfile(config_path): help_and_exit("Error: Invalid config file path") if not os.path.isdir(template_dir): help_and_exit("Error: Invalid template directory path") if not os.path.isdir(output_dir): help_and_exit("Error: Invalid output directory path") return (config_path, template_dir, output_dir, version_override) def execute(): config_path, template_dir, output_dir, version_override = parse_and_validate_args() config_data = load_json(config_path) generate_and_write_all(config_data, template_dir, output_dir, package_version=version_override) if __name__ == "__main__": execute()