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Requirements file parsing
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c sn t | } t | | | } xI | j | | D]5 } t | d | d | d | } | d k r1 | Vq1 Wd S)a 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.
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requirements file.
r$ findersessionN)get_line_parserRequirementsFileParserr handle_line)
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parsed_reqr r r r s c C s@ t | j d d } t | } t | } t | } | S)zxSplit, filter, and join lines, and return a line iterator
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:param line: The parsed line to be processed.
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: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)r0 rN rl r/ r- r. )rK r$ r3 r4 r; r r r r7 s r7 c @ s@ e Z d Z d d Z d d Z d d Z d d Z d S)
r6 c C s | | _ | | _ | | _ d S)N)_session _line_parser _comes_from)r' r4 r8 r# r r r r( C s z RequirementsFileParser.__init__c c s& x | j | | D] } | Vq Wd S)z3Parse a given file, yielding parsed lines.
N)_parse_and_recurse)r' r- r% rK r r r r N s z RequirementsFileParser.parsec c s x | j | | D] } | j r | j j s; | j j r | j j r` | j j d } d } n | j j d } d } t j | r t j | | } n0 t j | s t j
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parse_line s z#get_line_parser..parse_liner )r3 r r )r3 r r5 s r5 c C s | j d } g } | d d } xJ | D]B } | j d sP | j d rT Pq, | j | | j d q, Wd j | d j | f S)zBreak up the line into an args and options string. We only want to shlex
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add_help_optionFc S s t | d S)N)r| )r' r} r r r parser_exit s z!build_parser..parser_exit)optparse OptionParserSUPPORTED_OPTIONSSUPPORTED_OPTIONS_REQ
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r c c s d } g } x | D] \ } } | j d s> t j | r t j | rW d | } | r | j | | d k s| t | d j | f Vg } q | | f Vq | s | } | j | j d q W| r | d k s t | d j | f Vd S)zJoins a line ending in '' with the previous line (except when following
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rA c c sp xi | D]a \ } } xG t j | D]6 \ } } t j | } | sG q# | j | | } q# W| | f Vq Wd S)a 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 `_.
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to uppercase letter, digits and the `_` (underscore).
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r} z t d j | WYd d } ~ Xn X| | f S)aZ Gets the content of a file; it may be a filename, file: URL, or
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