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BitBake is licensed under the GNU General Public License version 2.0. See 
LICENSE.GPL-2.0-only for further details.

Individual files contain the following style tags instead of the full license text:

    SPDX-License-Identifier:	GPL-2.0-only

This enables machine processing of license information based on the SPDX
License Identifiers that are here available: http://spdx.org/licenses/


The following external components are distributed with this software:

* The Toaster Simple UI application is based upon the Django project template, the files of which are covered by the BSD license and are copyright (c) Django Software
Foundation and individual contributors.

* Twitter Bootstrap (including Glyphicons), redistributed under the MIT license
* jQuery is redistributed under the MIT license.

* Twitter typeahead.js redistributed under the MIT license. Note that the JS source has one small modification, so the full unminified file is currently included to make it obvious where this is.

* jsrender is redistributed under the MIT license.

* QUnit is redistributed under the MIT license.

* Font Awesome fonts redistributed under the SIL Open Font License 1.1

* simplediff is distributed under the zlib license.
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#!/usr/bin/env python
#
# Determine dependencies of python scripts or available python modules in a search path.
#
# Given the -d argument and a filename/filenames, returns the modules imported by those files.
# Given the -d argument and a directory/directories, recurses to find all
# python packages and modules, returns the modules imported by these.
# Given the -p argument and a path or paths, scans that path for available python modules/packages.

import argparse
import ast
import imp
import logging
import os.path
import sys


logger = logging.getLogger('pythondeps')

suffixes = []
for triple in imp.get_suffixes():
    suffixes.append(triple[0])


class PythonDepError(Exception):
    pass


class DependError(PythonDepError):
    def __init__(self, path, error):
        self.path = path
        self.error = error
        PythonDepError.__init__(self, error)

    def __str__(self):
        return "Failure determining dependencies of {}: {}".format(self.path, self.error)


class ImportVisitor(ast.NodeVisitor):
    def __init__(self):
        self.imports = set()
        self.importsfrom = []

    def visit_Import(self, node):
        for alias in node.names:
            self.imports.add(alias.name)

    def visit_ImportFrom(self, node):
        self.importsfrom.append((node.module, [a.name for a in node.names], node.level))


def walk_up(path):
    while path:
        yield path
        path, _, _ = path.rpartition(os.sep)


def get_provides(path):
    path = os.path.realpath(path)

    def get_fn_name(fn):
        for suffix in suffixes:
            if fn.endswith(suffix):
                return fn[:-len(suffix)]

    isdir = os.path.isdir(path)
    if isdir:
        pkg_path = path
        walk_path = path
    else:
        pkg_path = get_fn_name(path)
        if pkg_path is None:
            return
        walk_path = os.path.dirname(path)

    for curpath in walk_up(walk_path):
        if not os.path.exists(os.path.join(curpath, '__init__.py')):
            libdir = curpath
            break
    else:
        libdir = ''

    package_relpath = pkg_path[len(libdir)+1:]
    package = '.'.join(package_relpath.split(os.sep))
    if not isdir:
        yield package, path
    else:
        if os.path.exists(os.path.join(path, '__init__.py')):
            yield package, path

        for dirpath, dirnames, filenames in os.walk(path):
            relpath = dirpath[len(path)+1:]
            if relpath:
                if '__init__.py' not in filenames:
                    dirnames[:] = []
                    continue
                else:
                    context = '.'.join(relpath.split(os.sep))
                    if package:
                        context = package + '.' + context
                    yield context, dirpath
            else:
                context = package

            for fn in filenames:
                adjusted_fn = get_fn_name(fn)
                if not adjusted_fn or adjusted_fn == '__init__':
                    continue

                fullfn = os.path.join(dirpath, fn)
                if context:
                    yield context + '.' + adjusted_fn, fullfn
                else:
                    yield adjusted_fn, fullfn


def get_code_depends(code_string, path=None, provide=None, ispkg=False):
    try:
        code = ast.parse(code_string, path)
    except TypeError as exc:
        raise DependError(path, exc)
    except SyntaxError as exc:
        raise DependError(path, exc)

    visitor = ImportVisitor()
    visitor.visit(code)
    for builtin_module in sys.builtin_module_names:
        if builtin_module in visitor.imports:
            visitor.imports.remove(builtin_module)

    if provide:
        provide_elements = provide.split('.')
        if ispkg:
            provide_elements.append("__self__")
        context = '.'.join(provide_elements[:-1])
        package_path = os.path.dirname(path)
    else:
        context = None
        package_path = None

    levelzero_importsfrom = (module for module, names, level in visitor.importsfrom
                             if level == 0)
    for module in visitor.imports | set(levelzero_importsfrom):
        if context and path:
            module_basepath = os.path.join(package_path, module.replace('.', '/'))
            if os.path.exists(module_basepath):
                # Implicit relative import
                yield context + '.' + module, path
                continue

            for suffix in suffixes:
                if os.path.exists(module_basepath + suffix):
                    # Implicit relative import
                    yield context + '.' + module, path
                    break
            else:
                yield module, path
        else:
            yield module, path

    for module, names, level in visitor.importsfrom:
        if level == 0:
            continue
        elif not provide:
            raise DependError("Error: ImportFrom non-zero level outside of a package: {0}".format((module, names, level)), path)
        elif level > len(provide_elements):
            raise DependError("Error: ImportFrom level exceeds package depth: {0}".format((module, names, level)), path)
        else:
            context = '.'.join(provide_elements[:-level])
            if module:
                if context:
                    yield context + '.' + module, path
                else:
                    yield module, path


def get_file_depends(path):
    try:
        code_string = open(path, 'r').read()
    except (OSError, IOError) as exc:
        raise DependError(path, exc)

    return get_code_depends(code_string, path)


def get_depends_recursive(directory):
    directory = os.path.realpath(directory)

    provides = dict((v, k) for k, v in get_provides(directory))
    for filename, provide in provides.iteritems():
        if os.path.isdir(filename):
            filename = os.path.join(filename, '__init__.py')
            ispkg = True
        elif not filename.endswith('.py'):
            continue
        else:
            ispkg = False

        with open(filename, 'r') as f:
            source = f.read()

        depends = get_code_depends(source, filename, provide, ispkg)
        for depend, by in depends:
            yield depend, by


def get_depends(path):
    if os.path.isdir(path):
        return get_depends_recursive(path)
    else:
        return get_file_depends(path)


def main():
    logging.basicConfig()

    parser = argparse.ArgumentParser(description='Determine dependencies and provided packages for python scripts/modules')
    parser.add_argument('path', nargs='+', help='full path to content to be processed')
    group = parser.add_mutually_exclusive_group()
    group.add_argument('-p', '--provides', action='store_true',
                       help='given a path, display the provided python modules')
    group.add_argument('-d', '--depends', action='store_true',
                       help='given a filename, display the imported python modules')

    args = parser.parse_args()
    if args.provides:
        modules = set()
        for path in args.path:
            for provide, fn in get_provides(path):
                modules.add(provide)

        for module in sorted(modules):
            print(module)
    elif args.depends:
        for path in args.path:
            try:
                modules = get_depends(path)
            except PythonDepError as exc:
                logger.error(str(exc))
                sys.exit(1)

            for module, imp_by in modules:
                print("{}\t{}".format(module, imp_by))
    else:
        parser.print_help()
        sys.exit(2)


if __name__ == '__main__':
    main()
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-04-25 21:06:31 +0000