Initial commit

conf2spec.py

@@ -0,0 +1,112 @@
+from pathlib import Path
+
+import click
+import tomli
+
+from jinja2 import Template
+
+
+TEMPLATE_PATH = Path().resolve(__file__) / 'template.spec'
+
+
+def load_configuration(filename):
+    """Load TOML configuration file.
+    Raise exception if file's contents is not a valid TOML."""
+
+    with open(filename, "rb") as configuration_file:
+        try:
+            return tomli.load(configuration_file)
+        except tomli.TOMLDecodeError as err:
+            print("That's not a valid TOML file.")
+            raise err
+
+
+def generate_extra_build_requires(config):
+    """If defined in config file, return extra build requires.
+    If none were defined, return an empty string."""
+
+    # TODO: This doesn't handle doubles like -xr
+    options = {
+        "test": "-t",
+        "runtime": "-r",
+    }
+    return options.get(config["extra_build_requires"], "")
+
+
+def generate_check(config):
+    """    If defined in config file, return the applicable macro invocation.
+    If none was defined, return %py3_check_import with module name."""
+
+    # TODO: This list is far from complete
+    options = {
+        "tox": "%tox",
+        "pytest": "%pytest",
+    }
+    fallback = f"%py3_check_import {config['module_name']}"
+    return options.get(config["test"], fallback)
+
+
+def generate_manual_build_requires(config):
+    """If defined in config file, return manual build requires.
+    If none were defined, return an empty string."""
+
+    return config.get("manual_build_requires", "")
+
+
+def fill_in_template(config):
+    """Return template rendered with data from config file."""
+
+    with open(TEMPLATE_PATH) as template_file:
+        spec_template = Template(template_file.read())
+
+    result = spec_template.render(
+        name=config["name"],
+        python_name=config["python_name"],
+        version=config["version"],
+        release=config["release"],
+        summary=config["summary"],
+        license=config["license"],
+        url=config["url"],
+        source=config["source"],
+        description=config["description"],
+        module_name=config["module_name"],
+        manual_build_requires=generate_manual_build_requires(config),
+        extra_build_requires=generate_extra_build_requires(config),
+        test=generate_check(config),
+        license_files=" ".join(config["files"]["license_files"]),
+        doc_files=" ".join(config["files"]["doc_files"]),
+
+        changelog_head=config["changelog"]["changelog_head"],
+        changelog_msg=config["changelog"]["changelog_msg"],
+    )
+
+    return result
+
+
+def write_spec_file(config):
+    """Save the spec file in the current directory.
+    Return the saved file name"""
+
+    # TODO: make it possible to write the file to a given directory
+    result = fill_in_template(config)
+    spec_file_name = config["python_name"] + ".spec"
+    with open(spec_file_name, "w") as spec_file:
+        spec_file.write(result)
+    print(f"Spec file {spec_file_name} was saved.")
+    return spec_file_name
+
+
+@click.command()
+@click.option(
+    "--filename", "-f",
+    required=True,
+    help="Provide configuration file",
+)
+def main(filename):
+    config = load_configuration(filename)
+    print(f"{filename} loaded successful")
+    write_spec_file(config)
+
+
+if __name__ == "__main__":
+    main()