428 lines
14 KiB
Python
428 lines
14 KiB
Python
# -*- coding: utf-8 -*-
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from __future__ import unicode_literals, absolute_import
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from collections import OrderedDict
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import re
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import yaml
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from io import StringIO
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from six.moves.configparser import SafeConfigParser, NoOptionError
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from .regex import URL_REGEX, HASH_REGEX
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from .dependencies import DependencyFile, Dependency
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from packaging.requirements import Requirement as PackagingRequirement, InvalidRequirement
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from . import filetypes
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import toml
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from packaging.specifiers import SpecifierSet
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import json
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# this is a backport from setuptools 26.1
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def setuptools_parse_requirements_backport(strs): # pragma: no cover
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# Copyright (C) 2016 Jason R Coombs <jaraco@jaraco.com>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy of
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# this software and associated documentation files (the "Software"), to deal in
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# the Software without restriction, including without limitation the rights to
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# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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# of the Software, and to permit persons to whom the Software is furnished to do
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# 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 all
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# 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 FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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"""Yield ``Requirement`` objects for each specification in `strs`
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`strs` must be a string, or a (possibly-nested) iterable thereof.
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"""
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# create a steppable iterator, so we can handle \-continuations
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def yield_lines(strs):
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"""Yield non-empty/non-comment lines of a string or sequence"""
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if isinstance(strs, str):
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for s in strs.splitlines():
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s = s.strip()
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# skip blank lines/comments
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if s and not s.startswith('#'):
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yield s
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else:
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for ss in strs:
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for s in yield_lines(ss):
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yield s
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lines = iter(yield_lines(strs))
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for line in lines:
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# Drop comments -- a hash without a space may be in a URL.
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if ' #' in line:
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line = line[:line.find(' #')]
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# If there is a line continuation, drop it, and append the next line.
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if line.endswith('\\'):
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line = line[:-2].strip()
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line += next(lines)
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yield PackagingRequirement(line)
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class RequirementsTXTLineParser(object):
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"""
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"""
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@classmethod
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def parse(cls, line):
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"""
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:param line:
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:return:
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"""
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try:
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# setuptools requires a space before the comment. If this isn't the case, add it.
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if "\t#" in line:
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parsed, = setuptools_parse_requirements_backport(line.replace("\t#", "\t #"))
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else:
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parsed, = setuptools_parse_requirements_backport(line)
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except InvalidRequirement:
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return None
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dep = Dependency(
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name=parsed.name,
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specs=parsed.specifier,
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line=line,
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extras=parsed.extras,
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dependency_type=filetypes.requirements_txt
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)
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return dep
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class Parser(object):
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"""
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"""
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def __init__(self, obj):
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"""
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:param obj:
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"""
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self.obj = obj
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self._lines = None
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def iter_lines(self, lineno=0):
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"""
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:param lineno:
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:return:
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"""
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for line in self.lines[lineno:]:
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yield line
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@property
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def lines(self):
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"""
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:return:
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"""
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if self._lines is None:
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self._lines = self.obj.content.splitlines()
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return self._lines
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@property
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def is_marked_file(self):
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"""
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:return:
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"""
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for n, line in enumerate(self.iter_lines()):
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for marker in self.obj.file_marker:
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if marker in line:
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return True
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if n >= 2:
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break
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return False
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def is_marked_line(self, line):
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"""
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:param line:
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:return:
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"""
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for marker in self.obj.line_marker:
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if marker in line:
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return True
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return False
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@classmethod
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def parse_hashes(cls, line):
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"""
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:param line:
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:return:
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"""
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hashes = []
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for match in re.finditer(HASH_REGEX, line):
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hashes.append(line[match.start():match.end()])
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return re.sub(HASH_REGEX, "", line).strip(), hashes
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@classmethod
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def parse_index_server(cls, line):
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"""
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:param line:
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:return:
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"""
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matches = URL_REGEX.findall(line)
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if matches:
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url = matches[0]
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return url if url.endswith("/") else url + "/"
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return None
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@classmethod
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def resolve_file(cls, file_path, line):
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"""
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:param file_path:
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:param line:
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:return:
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"""
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line = line.replace("-r ", "").replace("--requirement ", "")
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parts = file_path.split("/")
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if " #" in line:
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line = line.split("#")[0].strip()
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if len(parts) == 1:
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return line
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return "/".join(parts[:-1]) + "/" + line
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class RequirementsTXTParser(Parser):
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"""
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"""
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def parse(self):
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"""
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Parses a requirements.txt-like file
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"""
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index_server = None
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for num, line in enumerate(self.iter_lines()):
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line = line.rstrip()
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if not line:
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continue
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if line.startswith('#'):
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# comments are lines that start with # only
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continue
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if line.startswith('-i') or \
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line.startswith('--index-url') or \
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line.startswith('--extra-index-url'):
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# this file is using a private index server, try to parse it
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index_server = self.parse_index_server(line)
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continue
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elif self.obj.path and (line.startswith('-r') or line.startswith('--requirement')):
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self.obj.resolved_files.append(self.resolve_file(self.obj.path, line))
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elif line.startswith('-f') or line.startswith('--find-links') or \
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line.startswith('--no-index') or line.startswith('--allow-external') or \
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line.startswith('--allow-unverified') or line.startswith('-Z') or \
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line.startswith('--always-unzip'):
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continue
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elif self.is_marked_line(line):
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continue
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else:
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try:
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parseable_line = line
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# multiline requirements are not parseable
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if "\\" in line:
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parseable_line = line.replace("\\", "")
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for next_line in self.iter_lines(num + 1):
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parseable_line += next_line.strip().replace("\\", "")
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line += "\n" + next_line
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if "\\" in next_line:
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continue
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break
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# ignore multiline requirements if they are marked
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if self.is_marked_line(parseable_line):
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continue
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hashes = []
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if "--hash" in parseable_line:
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parseable_line, hashes = Parser.parse_hashes(parseable_line)
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req = RequirementsTXTLineParser.parse(parseable_line)
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if req:
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req.hashes = hashes
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req.index_server = index_server
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# replace the requirements line with the 'real' line
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req.line = line
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self.obj.dependencies.append(req)
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except ValueError:
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continue
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class ToxINIParser(Parser):
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"""
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"""
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def parse(self):
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"""
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:return:
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"""
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parser = SafeConfigParser()
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parser.readfp(StringIO(self.obj.content))
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for section in parser.sections():
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try:
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content = parser.get(section=section, option="deps")
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for n, line in enumerate(content.splitlines()):
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if self.is_marked_line(line):
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continue
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if line:
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req = RequirementsTXTLineParser.parse(line)
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if req:
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req.dependency_type = self.obj.file_type
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self.obj.dependencies.append(req)
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except NoOptionError:
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pass
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class CondaYMLParser(Parser):
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"""
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"""
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def parse(self):
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"""
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:return:
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"""
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try:
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data = yaml.safe_load(self.obj.content)
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if data and 'dependencies' in data and isinstance(data['dependencies'], list):
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for dep in data['dependencies']:
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if isinstance(dep, dict) and 'pip' in dep:
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for n, line in enumerate(dep['pip']):
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if self.is_marked_line(line):
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continue
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req = RequirementsTXTLineParser.parse(line)
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if req:
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req.dependency_type = self.obj.file_type
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self.obj.dependencies.append(req)
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except yaml.YAMLError:
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pass
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class PipfileParser(Parser):
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def parse(self):
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"""
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Parse a Pipfile (as seen in pipenv)
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:return:
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"""
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try:
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data = toml.loads(self.obj.content, _dict=OrderedDict)
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if data:
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for package_type in ['packages', 'dev-packages']:
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if package_type in data:
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for name, specs in data[package_type].items():
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# skip on VCS dependencies
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if not isinstance(specs, str):
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continue
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if specs == '*':
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specs = ''
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self.obj.dependencies.append(
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Dependency(
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name=name, specs=SpecifierSet(specs),
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dependency_type=filetypes.pipfile,
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line=''.join([name, specs]),
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section=package_type
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)
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)
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except (toml.TomlDecodeError, IndexError) as e:
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pass
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class PipfileLockParser(Parser):
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def parse(self):
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"""
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Parse a Pipfile.lock (as seen in pipenv)
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:return:
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"""
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try:
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data = json.loads(self.obj.content, object_pairs_hook=OrderedDict)
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if data:
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for package_type in ['default', 'develop']:
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if package_type in data:
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for name, meta in data[package_type].items():
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# skip VCS dependencies
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if 'version' not in meta:
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continue
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specs = meta['version']
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hashes = meta['hashes']
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self.obj.dependencies.append(
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Dependency(
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name=name, specs=SpecifierSet(specs),
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dependency_type=filetypes.pipfile_lock,
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hashes=hashes,
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line=''.join([name, specs]),
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section=package_type
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)
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)
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except ValueError:
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pass
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class SetupCfgParser(Parser):
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def parse(self):
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parser = SafeConfigParser()
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parser.readfp(StringIO(self.obj.content))
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for section in parser.values():
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if section.name == 'options':
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options = 'install_requires', 'setup_requires', 'test_require'
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for name in options:
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content = section.get(name)
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if not content:
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continue
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self._parse_content(content)
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elif section.name == 'options.extras_require':
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for content in section.values():
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self._parse_content(content)
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def _parse_content(self, content):
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for n, line in enumerate(content.splitlines()):
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if self.is_marked_line(line):
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continue
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if line:
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req = RequirementsTXTLineParser.parse(line)
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if req:
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req.dependency_type = self.obj.file_type
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self.obj.dependencies.append(req)
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def parse(content, file_type=None, path=None, sha=None, marker=((), ()), parser=None):
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"""
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:param content:
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:param file_type:
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:param path:
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:param sha:
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:param marker:
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:param parser:
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:return:
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"""
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dep_file = DependencyFile(
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content=content,
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path=path,
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sha=sha,
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marker=marker,
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file_type=file_type,
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parser=parser
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)
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return dep_file.parse()
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