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Edit File : freeze.py \| Size : 9.60 KB
# The following comment should be removed at some point in the future. # mypy: strict-optional=False # mypy: disallow-untyped-defs=False from __future__ import absolute_import import collections import logging import os import re from pip._vendor import six from pip._vendor.packaging.utils import canonicalize_name from pip._vendor.pkg_resources import RequirementParseError from pip._internal.exceptions import BadCommand, InstallationError from pip._internal.req.constructors import ( install_req_from_editable, install_req_from_line, ) from pip._internal.req.req_file import COMMENT_RE from pip._internal.utils.misc import ( dist_is_editable, get_installed_distributions, ) from pip._internal.utils.typing import MYPY_CHECK_RUNNING if MYPY_CHECK_RUNNING: from typing import ( Iterator, Optional, List, Container, Set, Dict, Tuple, Iterable, Union ) from pip._internal.cache import WheelCache from pip._vendor.pkg_resources import ( Distribution, Requirement ) RequirementInfo = Tuple[Optional[Union[str, Requirement]], bool, List[str]] logger = logging.getLogger(__name__) def freeze( requirement=None, # type: Optional[List[str]] find_links=None, # type: Optional[List[str]] local_only=None, # type: Optional[bool] user_only=None, # type: Optional[bool] paths=None, # type: Optional[List[str]] skip_regex=None, # type: Optional[str] isolated=False, # type: bool wheel_cache=None, # type: Optional[WheelCache] exclude_editable=False, # type: bool skip=() # type: Container[str] ): # type: (...) -> Iterator[str] find_links = find_links or [] skip_match = None if skip_regex: skip_match = re.compile(skip_regex).search for link in find_links: yield '-f %s' % link installations = {} # type: Dict[str, FrozenRequirement] for dist in get_installed_distributions(local_only=local_only, skip=(), user_only=user_only, paths=paths): try: req = FrozenRequirement.from_dist(dist) except RequirementParseError as exc: # We include dist rather than dist.project_name because the # dist string includes more information, like the version and # location. We also include the exception message to aid # troubleshooting. logger.warning( 'Could not generate requirement for distribution %r: %s', dist, exc ) continue if exclude_editable and req.editable: continue installations[req.name] = req if requirement: # the options that don't get turned into an InstallRequirement # should only be emitted once, even if the same option is in multiple # requirements files, so we need to keep track of what has been emitted # so that we don't emit it again if it's seen again emitted_options = set() # type: Set[str] # keep track of which files a requirement is in so that we can # give an accurate warning if a requirement appears multiple times. req_files = collections.defaultdict(list) # type: Dict[str, List[str]] for req_file_path in requirement: with open(req_file_path) as req_file: for line in req_file: if (not line.strip() or line.strip().startswith('#') or (skip_match and skip_match(line)) or line.startswith(( '-r', '--requirement', '-Z', '--always-unzip', '-f', '--find-links', '-i', '--index-url', '--pre', '--trusted-host', '--process-dependency-links', '--extra-index-url'))): line = line.rstrip() if line not in emitted_options: emitted_options.add(line) yield line continue if line.startswith('-e') or line.startswith('--editable'): if line.startswith('-e'): line = line[2:].strip() else: line = line[len('--editable'):].strip().lstrip('=') line_req = install_req_from_editable( line, isolated=isolated, wheel_cache=wheel_cache, ) else: line_req = install_req_from_line( COMMENT_RE.sub('', line).strip(), isolated=isolated, wheel_cache=wheel_cache, ) if not line_req.name: logger.info( "Skipping line in requirement file [%s] because " "it's not clear what it would install: %s", req_file_path, line.strip(), ) logger.info( " (add #egg=PackageName to the URL to avoid" " this warning)" ) elif line_req.name not in installations: # either it's not installed, or it is installed # but has been processed already if not req_files[line_req.name]: logger.warning( "Requirement file [%s] contains %s, but " "package %r is not installed", req_file_path, COMMENT_RE.sub('', line).strip(), line_req.name ) else: req_files[line_req.name].append(req_file_path) else: yield str(installations[line_req.name]).rstrip() del installations[line_req.name] req_files[line_req.name].append(req_file_path) # Warn about requirements that were included multiple times (in a # single requirements file or in different requirements files). for name, files in six.iteritems(req_files): if len(files) > 1: logger.warning("Requirement %s included multiple times [%s]", name, ', '.join(sorted(set(files)))) yield( '## The following requirements were added by ' 'pip freeze:' ) for installation in sorted( installations.values(), key=lambda x: x.name.lower()): if canonicalize_name(installation.name) not in skip: yield str(installation).rstrip() def get_requirement_info(dist): # type: (Distribution) -> RequirementInfo """ Compute and return values (req, editable, comments) for use in FrozenRequirement.from_dist(). """ if not dist_is_editable(dist): return (None, False, []) location = os.path.normcase(os.path.abspath(dist.location)) from pip._internal.vcs import vcs, RemoteNotFoundError vcs_backend = vcs.get_backend_for_dir(location) if vcs_backend is None: req = dist.as_requirement() logger.debug( 'No VCS found for editable requirement "%s" in: %r', req, location, ) comments = [ '# Editable install with no version control ({})'.format(req) ] return (location, True, comments) try: req = vcs_backend.get_src_requirement(location, dist.project_name) except RemoteNotFoundError: req = dist.as_requirement() comments = [ '# Editable {} install with no remote ({})'.format( type(vcs_backend).__name__, req, ) ] return (location, True, comments) except BadCommand: logger.warning( 'cannot determine version of editable source in %s ' '(%s command not found in path)', location, vcs_backend.name, ) return (None, True, []) except InstallationError as exc: logger.warning( "Error when trying to get requirement for VCS system %s, " "falling back to uneditable format", exc ) else: if req is not None: return (req, True, []) logger.warning( 'Could not determine repository location of %s', location ) comments = ['## !! Could not determine repository location'] return (None, False, comments) class FrozenRequirement(object): def __init__(self, name, req, editable, comments=()): # type: (str, Union[str, Requirement], bool, Iterable[str]) -> None self.name = name self.req = req self.editable = editable self.comments = comments @classmethod def from_dist(cls, dist): # type: (Distribution) -> FrozenRequirement req, editable, comments = get_requirement_info(dist) if req is None: req = dist.as_requirement() return cls(dist.project_name, req, editable, comments=comments) def __str__(self): req = self.req if self.editable: req = '-e %s' % req return '\n'.join(list(self.comments) + [str(req)]) + '\n' Back

Edit File : freeze.py | Size : 9.60 KB

# The following comment should be removed at some point in the future.
# mypy: strict-optional=False
# mypy: disallow-untyped-defs=False

from __future__ import absolute_import

import collections
import logging
import os
import re

from pip._vendor import six
from pip._vendor.packaging.utils import canonicalize_name
from pip._vendor.pkg_resources import RequirementParseError

from pip._internal.exceptions import BadCommand, InstallationError
from pip._internal.req.constructors import (
    install_req_from_editable,
    install_req_from_line,
)
from pip._internal.req.req_file import COMMENT_RE
from pip._internal.utils.misc import (
    dist_is_editable,
    get_installed_distributions,
)
from pip._internal.utils.typing import MYPY_CHECK_RUNNING

if MYPY_CHECK_RUNNING:
    from typing import (
        Iterator, Optional, List, Container, Set, Dict, Tuple, Iterable, Union
    )
    from pip._internal.cache import WheelCache
    from pip._vendor.pkg_resources import (
        Distribution, Requirement
    )

RequirementInfo = Tuple[Optional[Union[str, Requirement]], bool, List[str]]

logger = logging.getLogger(__name__)

def freeze(
    requirement=None,  # type: Optional[List[str]]
    find_links=None,  # type: Optional[List[str]]
    local_only=None,  # type: Optional[bool]
    user_only=None,  # type: Optional[bool]
    paths=None,  # type: Optional[List[str]]
    skip_regex=None,  # type: Optional[str]
    isolated=False,  # type: bool
    wheel_cache=None,  # type: Optional[WheelCache]
    exclude_editable=False,  # type: bool
    skip=()  # type: Container[str]
):
    # type: (...) -> Iterator[str]
    find_links = find_links or []
    skip_match = None

if skip_regex:
        skip_match = re.compile(skip_regex).search

for link in find_links:
        yield '-f %s' % link
    installations = {}  # type: Dict[str, FrozenRequirement]
    for dist in get_installed_distributions(local_only=local_only,
                                            skip=(),
                                            user_only=user_only,
                                            paths=paths):
        try:
            req = FrozenRequirement.from_dist(dist)
        except RequirementParseError as exc:
            # We include dist rather than dist.project_name because the
            # dist string includes more information, like the version and
            # location. We also include the exception message to aid
            # troubleshooting.
            logger.warning(
                'Could not generate requirement for distribution %r: %s',
                dist, exc
            )
            continue
        if exclude_editable and req.editable:
            continue
        installations[req.name] = req

if requirement:
        # the options that don't get turned into an InstallRequirement
        # should only be emitted once, even if the same option is in multiple
        # requirements files, so we need to keep track of what has been emitted
        # so that we don't emit it again if it's seen again
        emitted_options = set()  # type: Set[str]
        # keep track of which files a requirement is in so that we can
        # give an accurate warning if a requirement appears multiple times.
        req_files = collections.defaultdict(list)  # type: Dict[str, List[str]]
        for req_file_path in requirement:
            with open(req_file_path) as req_file:
                for line in req_file:
                    if (not line.strip() or
                            line.strip().startswith('#') or
                            (skip_match and skip_match(line)) or
                            line.startswith((
                                '-r', '--requirement',
                                '-Z', '--always-unzip',
                                '-f', '--find-links',
                                '-i', '--index-url',
                                '--pre',
                                '--trusted-host',
                                '--process-dependency-links',
                                '--extra-index-url'))):
                        line = line.rstrip()
                        if line not in emitted_options:
                            emitted_options.add(line)
                            yield line
                        continue

if line.startswith('-e') or line.startswith('--editable'):
                        if line.startswith('-e'):
                            line = line[2:].strip()
                        else:
                            line = line[len('--editable'):].strip().lstrip('=')
                        line_req = install_req_from_editable(
                            line,
                            isolated=isolated,
                            wheel_cache=wheel_cache,
                        )
                    else:
                        line_req = install_req_from_line(
                            COMMENT_RE.sub('', line).strip(),
                            isolated=isolated,
                            wheel_cache=wheel_cache,
                        )

if not line_req.name:
                        logger.info(
                            "Skipping line in requirement file [%s] because "
                            "it's not clear what it would install: %s",
                            req_file_path, line.strip(),
                        )
                        logger.info(
                            "  (add #egg=PackageName to the URL to avoid"
                            " this warning)"
                        )
                    elif line_req.name not in installations:
                        # either it's not installed, or it is installed
                        # but has been processed already
                        if not req_files[line_req.name]:
                            logger.warning(
                                "Requirement file [%s] contains %s, but "
                                "package %r is not installed",
                                req_file_path,
                                COMMENT_RE.sub('', line).strip(), line_req.name
                            )
                        else:
                            req_files[line_req.name].append(req_file_path)
                    else:
                        yield str(installations[line_req.name]).rstrip()
                        del installations[line_req.name]
                        req_files[line_req.name].append(req_file_path)

# Warn about requirements that were included multiple times (in a
        # single requirements file or in different requirements files).
        for name, files in six.iteritems(req_files):
            if len(files) > 1:
                logger.warning("Requirement %s included multiple times [%s]",
                               name, ', '.join(sorted(set(files))))

yield(
            '## The following requirements were added by '
            'pip freeze:'
        )
    for installation in sorted(
            installations.values(), key=lambda x: x.name.lower()):
        if canonicalize_name(installation.name) not in skip:
            yield str(installation).rstrip()

def get_requirement_info(dist):
    # type: (Distribution) -> RequirementInfo
    """
    Compute and return values (req, editable, comments) for use in
    FrozenRequirement.from_dist().
    """
    if not dist_is_editable(dist):
        return (None, False, [])

location = os.path.normcase(os.path.abspath(dist.location))

from pip._internal.vcs import vcs, RemoteNotFoundError
    vcs_backend = vcs.get_backend_for_dir(location)

if vcs_backend is None:
        req = dist.as_requirement()
        logger.debug(
            'No VCS found for editable requirement "%s" in: %r', req,
            location,
        )
        comments = [
            '# Editable install with no version control ({})'.format(req)
        ]
        return (location, True, comments)

try:
        req = vcs_backend.get_src_requirement(location, dist.project_name)
    except RemoteNotFoundError:
        req = dist.as_requirement()
        comments = [
            '# Editable {} install with no remote ({})'.format(
                type(vcs_backend).__name__, req,
            )
        ]
        return (location, True, comments)

except BadCommand:
        logger.warning(
            'cannot determine version of editable source in %s '
            '(%s command not found in path)',
            location,
            vcs_backend.name,
        )
        return (None, True, [])

except InstallationError as exc:
        logger.warning(
            "Error when trying to get requirement for VCS system %s, "
            "falling back to uneditable format", exc
        )
    else:
        if req is not None:
            return (req, True, [])

logger.warning(
        'Could not determine repository location of %s', location
    )
    comments = ['## !! Could not determine repository location']

return (None, False, comments)

class FrozenRequirement(object):
    def __init__(self, name, req, editable, comments=()):
        # type: (str, Union[str, Requirement], bool, Iterable[str]) -> None
        self.name = name
        self.req = req
        self.editable = editable
        self.comments = comments

@classmethod
    def from_dist(cls, dist):
        # type: (Distribution) -> FrozenRequirement
        req, editable, comments = get_requirement_info(dist)
        if req is None:
            req = dist.as_requirement()

return cls(dist.project_name, req, editable, comments=comments)

def __str__(self):
        req = self.req
        if self.editable:
            req = '-e %s' % req
        return '\n'.join(list(self.comments) + [str(req)]) + '\n'

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