- NAME =
/[a-zA-Z0-9](?:[a-zA-Z0-9\-_\.]*[a-zA-Z0-9])?/
/[a-zA-Z0-9\-_\.]+/
- COMPARISON =
/===|==|>=|<=|<|>|~=|!=/
- VERSION =
/([1-9][0-9]*!)?[0-9]+[a-zA-Z0-9\-_.*]*(\+[0-9a-zA-Z]+(\.[0-9a-zA-Z]+)*)?/
- REQUIREMENT =
/(?<comparison>#{COMPARISON})\s*\\?\s*v?(?<version>#{VERSION})/
- HASH =
/--hash=(?<algorithm>.*?):(?<hash>.*?)(?=\s|\\|$)/
- REQUIREMENTS =
/#{REQUIREMENT}(\s*,\s*\\?\s*#{REQUIREMENT})*/
- HASHES =
/#{HASH}(\s*\\?\s*#{HASH})*/
- MARKER_OP =
/\s*(#{COMPARISON}|(\s*in)|(\s*not\s*in))/
- PYTHON_STR_C =
%r{[a-zA-Z0-9\s\(\)\.\{\}\-_\*#:;/\?\[\]!~`@\$%\^&=\+\|<>]}
- PYTHON_STR =
/('(#{PYTHON_STR_C}|")*'|"(#{PYTHON_STR_C}|')*")/
- ENV_VAR =
/python_version|python_full_version|os_name|sys_platform|
platform_release|platform_system|platform_version|platform_machine|
platform_python_implementation|implementation_name|
implementation_version/
- MARKER_VAR =
/\s*(#{ENV_VAR}|#{PYTHON_STR})/
- MARKER_EXPR_ONE =
/#{MARKER_VAR}#{MARKER_OP}#{MARKER_VAR}/
- MARKER_EXPR =
/(#{MARKER_EXPR_ONE}|\(\s*|\s*\)|\s+and\s+|\s+or\s+)+/
- INSTALL_REQ_WITH_REQUIREMENT =
/\s*\\?\s*(?<name>#{NAME})
\s*\\?\s*(\[\s*(?<extras>#{EXTRA}(\s*,\s*#{EXTRA})*)\s*\])?
\s*\\?\s*\(?(?<requirements>#{REQUIREMENTS})\)?
\s*\\?\s*(;\s*(?<markers>#{MARKER_EXPR}))?
\s*\\?\s*(?<hashes>#{HASHES})?
\s*#*\s*(?<comment>.+)?
/x
- INSTALL_REQ_WITHOUT_REQUIREMENT =
/^\s*\\?\s*(?<name>#{NAME})
\s*\\?\s*(\[\s*(?<extras>#{EXTRA}(\s*,\s*#{EXTRA})*)\s*\])?
\s*\\?\s*(;\s*(?<markers>#{MARKER_EXPR}))?
\s*\\?\s*(?<hashes>#{HASHES})?
\s*#*\s*(?<comment>.+)?$
/x
- VALID_REQ_TXT_REQUIREMENT =
/^\s*\\?\s*(?<name>#{NAME})
\s*\\?\s*(\[\s*(?<extras>#{EXTRA}(\s*,\s*#{EXTRA})*)\s*\])?
\s*\\?\s*\(?(?<requirements>#{REQUIREMENTS})?\)?
\s*\\?\s*(;\s*(?<markers>#{MARKER_EXPR}))?
\s*\\?\s*(?<hashes>#{HASHES})?
\s*(\#+\s*(?<comment>.*))?$
/x
/\s*\\?\s*(?<name>#{NAME})
(\s*\\?\s*\[\s*(?<extras>#{EXTRA}(\s*,\s*#{EXTRA})*)\s*\])?
/x