Current File : //opt/alt/python27/lib/python2.7/site-packages/pip/_internal/req/req_file.pyc
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Requirements file parsing
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c@ sq t | � } t | | | � } xL | j | | � D]8 } t | d | d | d | �} | d k r1 | Vq1 q1 Wd S( s� Parse a requirements file and yield ParsedRequirement instances.
:param filename: Path or url of requirements file.
:param session: PipSession instance.
:param finder: Instance of pip.index.PackageFinder.
:param comes_from: Origin description of requirements.
:param options: cli options.
:param constraint: If true, parsing a constraint file rather than
requirements file.
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:param content: the content of the requirements file
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c C@ sF | j r t | | � } | St | j | j | j | | | � d Sd S( s Handle a single parsed requirements line; This can result in
creating/yielding requirements, or updating the finder.
:param line: The parsed line to be processed.
:param options: CLI options.
:param finder: The finder - updated by non-requirement lines.
:param session: The session - updated by non-requirement lines.
Returns a ParsedRequirement object if the line is a requirement line,
otherwise returns None.
For lines that contain requirements, the only options that have an effect
are from SUPPORTED_OPTIONS_REQ, and they are scoped to the
requirement. Other options from SUPPORTED_OPTIONS may be present, but are
ignored.
For lines that do not contain requirements, the only options that have an
effect are from SUPPORTED_OPTIONS. Options from SUPPORTED_OPTIONS_REQ may
be present, but are ignored. These lines may contain multiple options
(although our docs imply only one is supported), and all our parsed and
affect the finder.
N( R( RG Re R& R$ R% R" ( RC R R, R- R4 ( ( sK /opt/alt/python27/lib/python2.7/site-packages/pip/_internal/req/req_file.pyR0 s R/ c B@ s, e Z d � Z d � Z d � Z d � Z RS( c C@ s | | _ | | _ | | _ d S( N( t _sessiont _line_parsert _comes_from( R R- R1 R ( ( sK /opt/alt/python27/lib/python2.7/site-packages/pip/_internal/req/req_file.pyR C s c c@ s& x | j | | � D] } | Vq Wd S( s3 Parse a given file, yielding parsed lines.
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parse_line� s ( ( R, R� ( ( R, sK /opt/alt/python27/lib/python2.7/site-packages/pip/_internal/req/req_file.pyR. � s c C@ s� | j d � } g } | } xJ | D]B } | j d � sG | j d � rK Pq# | j | � | j d � q# Wd j | � d j | � f S( s� Break up the line into an args and options string. We only want to shlex
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which are corrupted by shlex.
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Return a parser for parsing requirement lines
t add_help_optionc S@ s t | � � d S( N( Ru ( R Rv ( ( sK /opt/alt/python27/lib/python2.7/site-packages/pip/_internal/req/req_file.pyt parser_exit� s ( t optparset OptionParserR) t SUPPORTED_OPTIONSt SUPPORTED_OPTIONS_REQt
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c c@ ss xl | D]d \ } } xJ t j | � D]9 \ } } t j | � } | sJ q# n | j | | � } q# W| | f Vq Wd S( s� Replace all environment variables that can be retrieved via `os.getenv`.
The only allowed format for environment variables defined in the
requirement file is `${MY_VARIABLE_1}` to ensure two things:
1. Strings that contain a `$` aren't accidentally (partially) expanded.
2. Ensure consistency across platforms for requirement files.
These points are the result of a discussion on the `github pull
request #3514 <https://github.com/pypa/pip/pull/3514>`_.
Valid characters in variable names follow the `POSIX standard
<http://pubs.opengroup.org/onlinepubs/9699919799/>`_ and are limited
to uppercase letter, digits and the `_` (underscore).
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ry} t d j | � � � n X| | f S( sZ Gets the content of a file; it may be a filename, file: URL, or
http: URL. Returns (location, content). Content is unicode.
Respects # -*- coding: declarations on the retrieved files.
:param url: File path or url.
:param session: PipSession instance.
:param comes_from: Origin description of requirements.
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