122 lines
4.4 KiB
Python
Executable File
122 lines
4.4 KiB
Python
Executable File
#!/usr/bin/python3
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# -*- coding: utf-8 -*-
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# Copyright 2012 T.C. Hollingsworth <tchollingsworth@gmail.com>
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# Copyright 2017 Tomas Tomecek <ttomecek@redhat.com>
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# Copyright 2019 Jan Staněk <jstanek@redhat.com>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to
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# deal in the Software without restriction, including without limitation the
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# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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# sell copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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# IN THE SOFTWARE.
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"""Automatic provides generator for Node.js libraries.
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Metadata taken from package.json. See `man npm-json` for details.
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"""
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from __future__ import print_function, with_statement
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import json
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import os
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import sys
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from itertools import chain, groupby
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DEPENDENCY_TEMPLATE = "npm(%(name)s) = %(version)s"
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BUNDLED_TEMPLATE = "bundled(nodejs-%(name)s) = %(version)s"
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NODE_MODULES = {"node_modules", "node_modules_prod"}
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class PrivatePackage(RuntimeError):
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"""Private package metadata that should not be listed."""
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#: Something is wrong with the ``package.json`` file
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_INVALID_METADATA_FILE = (IOError, PrivatePackage, KeyError)
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def format_metadata(metadata, bundled=False):
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"""Format ``package.json``-like metadata into RPM dependency.
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Arguments:
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metadata (dict): Package metadata, presumably read from ``package.json``.
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bundled (bool): Should the bundled dependency format be used?
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Returns:
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str: RPM dependency (i.e. ``npm(example) = 1.0.0``)
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Raises:
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KeyError: Expected key (i.e. ``name``, ``version``) missing in metadata.
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PrivatePackage: The metadata indicate private (unlisted) package.
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"""
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# Skip private packages
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if metadata.get("private", False):
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raise PrivatePackage(metadata)
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template = BUNDLED_TEMPLATE if bundled else DEPENDENCY_TEMPLATE
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return template % metadata
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def generate_dependencies(module_path, module_dir_set=NODE_MODULES):
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"""Generate RPM dependency for a module and all it's dependencies.
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Arguments:
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module_path (str): Path to a module directory or it's ``package.json``
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module_dir_set (set): Base names of directories to look into
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for bundled dependencies.
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Yields:
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str: RPM dependency for the module and each of it's (public) bundled dependencies.
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Raises:
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ValueError: module_path is not valid module or ``package.json`` file
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"""
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# Determine paths to root module directory and package.json
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if os.path.isdir(module_path):
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root_dir = module_path
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elif os.path.basename(module_path) == "package.json":
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root_dir = os.path.dirname(module_path)
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else: # Invalid metadata path
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raise ValueError("Invalid module path '%s'" % module_path)
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for dir_path, subdir_list, file_list in os.walk(root_dir):
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# We are only interested in directories that contain package.json
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if "package.json" not in file_list:
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continue
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# Read and format metadata
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metadata_path = os.path.join(dir_path, "package.json")
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bundled = dir_path != root_dir
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try:
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with open(metadata_path, mode="r") as metadata_file:
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metadata = json.load(metadata_file)
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yield format_metadata(metadata, bundled=bundled)
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except _INVALID_METADATA_FILE:
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pass # Ignore
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# Only visit subdirectories in module_dir_set
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subdir_list[:] = list(module_dir_set & set(subdir_list))
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if __name__ == "__main__":
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module_paths = (path.strip() for path in sys.stdin)
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provides = chain.from_iterable(generate_dependencies(m) for m in module_paths)
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# sort|uniq
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for provide, __ in groupby(sorted(provides)):
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print(provide)
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