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https://git.FreeBSD.org/ports.git
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textproc/py-feedparser: use new devel/py-sgmllib3k as run dependency
Do not ship sgmllib via ${FILESDIR} because it breaks the egg
registration of the feedparser module when installed via distutil,
instead add new created port devel/py-sgmllib3k as run dependency. This
seems the right approach of solving this issue.
PR: 250380
This commit is contained in:
Sofian Brabez
parent
34dfcdfc4d
commit
a08dcbae9b
@ -2,17 +2,18 @@
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PORTNAME= feedparser
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PORTVERSION= 6.0.2
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PORTREVISION= 1
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PORTREVISION= 2
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CATEGORIES= textproc python
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PKGNAMEPREFIX= ${PYTHON_PKGNAMEPREFIX}
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MAINTAINER= sbz@FreeBSD.org
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COMMENT= Universal feed parser written in Python
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LICENSE= BSD2CLAUSE PSFL
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LICENSE_COMB= multi
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LICENSE= BSD2CLAUSE
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LICENSE_FILE= ${WRKSRC}/LICENSE
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RUN_DEPENDS= ${PYTHON_PKGNAMEPREFIX}sgmllib3k>=0:devel/py-sgmllib3k@${PY_FLAVOR}
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USES= python:3.6+ tar:bzip2
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USE_PYTHON= autoplist distutils
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USE_GITHUB= yes
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@ -25,18 +26,6 @@ PORTDOCS= NEWS README.rst
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OPTIONS_DEFINE= DOCS
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.include <bsd.port.pre.mk>
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.if ${PYTHON_REL} > 3700
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PLIST_FILES+= ${PYTHON_SITELIBDIR}/sgmllib.py
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post-install:
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${INSTALL_DATA} ${FILESDIR}/sgmllib.py ${STAGEDIR}/${PYTHON_SITELIBDIR}/sgmllib.py
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.endif
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post-patch:
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@${REINPLACE_CMD} '/sgmllib3k/d' ${WRKSRC}/setup.py
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post-install-DOCS-on:
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@${MKDIR} ${STAGEDIR}${DOCSDIR}
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${INSTALL_DATA} ${PORTDOCS:S,^,${WRKSRC}/,} ${STAGEDIR}${DOCSDIR}
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@ -44,4 +33,4 @@ post-install-DOCS-on:
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do-test:
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@(cd ${WRKSRC}; ${PYTHON_CMD} tests/runtests.py)
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.include <bsd.port.post.mk>
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.include <bsd.port.mk>
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@ -1,547 +0,0 @@
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"""A parser for SGML, using the derived class as a static DTD."""
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# XXX This only supports those SGML features used by HTML.
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# XXX There should be a way to distinguish between PCDATA (parsed
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# character data -- the normal case), RCDATA (replaceable character
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# data -- only char and entity references and end tags are special)
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# and CDATA (character data -- only end tags are special). RCDATA is
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# not supported at all.
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import _markupbase
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import re
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__all__ = ["SGMLParser", "SGMLParseError"]
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# Regular expressions used for parsing
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interesting = re.compile('[&<]')
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incomplete = re.compile('&([a-zA-Z][a-zA-Z0-9]*|#[0-9]*)?|'
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'<([a-zA-Z][^<>]*|'
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'/([a-zA-Z][^<>]*)?|'
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'![^<>]*)?')
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entityref = re.compile('&([a-zA-Z][-.a-zA-Z0-9]*)[^a-zA-Z0-9]')
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charref = re.compile('&#([0-9]+)[^0-9]')
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starttagopen = re.compile('<[>a-zA-Z]')
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shorttagopen = re.compile('<[a-zA-Z][-.a-zA-Z0-9]*/')
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shorttag = re.compile('<([a-zA-Z][-.a-zA-Z0-9]*)/([^/]*)/')
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piclose = re.compile('>')
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endbracket = re.compile('[<>]')
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tagfind = re.compile('[a-zA-Z][-_.a-zA-Z0-9]*')
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attrfind = re.compile(
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r'\s*([a-zA-Z_][-:.a-zA-Z_0-9]*)(\s*=\s*'
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r'(\'[^\']*\'|"[^"]*"|[][\-a-zA-Z0-9./,:;+*%?!&$\(\)_#=~\'"@]*))?')
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class SGMLParseError(RuntimeError):
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"""Exception raised for all parse errors."""
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pass
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# SGML parser base class -- find tags and call handler functions.
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# Usage: p = SGMLParser(); p.feed(data); ...; p.close().
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# The dtd is defined by deriving a class which defines methods
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# with special names to handle tags: start_foo and end_foo to handle
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# <foo> and </foo>, respectively, or do_foo to handle <foo> by itself.
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# (Tags are converted to lower case for this purpose.) The data
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# between tags is passed to the parser by calling self.handle_data()
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# with some data as argument (the data may be split up in arbitrary
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# chunks). Entity references are passed by calling
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# self.handle_entityref() with the entity reference as argument.
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class SGMLParser(_markupbase.ParserBase):
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# Definition of entities -- derived classes may override
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entity_or_charref = re.compile('&(?:'
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'([a-zA-Z][-.a-zA-Z0-9]*)|#([0-9]+)'
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')(;?)')
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def __init__(self, verbose=0):
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"""Initialize and reset this instance."""
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self.verbose = verbose
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self.reset()
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def reset(self):
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"""Reset this instance. Loses all unprocessed data."""
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self.__starttag_text = None
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self.rawdata = ''
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self.stack = []
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self.lasttag = '???'
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self.nomoretags = 0
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self.literal = 0
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_markupbase.ParserBase.reset(self)
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def setnomoretags(self):
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"""Enter literal mode (CDATA) till EOF.
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Intended for derived classes only.
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"""
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self.nomoretags = self.literal = 1
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def setliteral(self, *args):
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"""Enter literal mode (CDATA).
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Intended for derived classes only.
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"""
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self.literal = 1
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def feed(self, data):
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"""Feed some data to the parser.
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Call this as often as you want, with as little or as much text
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as you want (may include '\n'). (This just saves the text,
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all the processing is done by goahead().)
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"""
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self.rawdata = self.rawdata + data
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self.goahead(0)
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def close(self):
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"""Handle the remaining data."""
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self.goahead(1)
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def error(self, message):
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raise SGMLParseError(message)
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# Internal -- handle data as far as reasonable. May leave state
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# and data to be processed by a subsequent call. If 'end' is
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# true, force handling all data as if followed by EOF marker.
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def goahead(self, end):
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rawdata = self.rawdata
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i = 0
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n = len(rawdata)
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while i < n:
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if self.nomoretags:
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self.handle_data(rawdata[i:n])
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i = n
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break
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match = interesting.search(rawdata, i)
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if match: j = match.start()
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else: j = n
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if i < j:
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self.handle_data(rawdata[i:j])
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i = j
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if i == n: break
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if rawdata[i] == '<':
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if starttagopen.match(rawdata, i):
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if self.literal:
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self.handle_data(rawdata[i])
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i = i+1
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continue
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k = self.parse_starttag(i)
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if k < 0: break
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i = k
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continue
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if rawdata.startswith("</", i):
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k = self.parse_endtag(i)
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if k < 0: break
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i = k
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self.literal = 0
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continue
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if self.literal:
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if n > (i + 1):
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self.handle_data("<")
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i = i+1
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else:
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# incomplete
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break
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continue
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if rawdata.startswith("<!--", i):
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# Strictly speaking, a comment is --.*--
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# within a declaration tag <!...>.
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# This should be removed,
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# and comments handled only in parse_declaration.
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k = self.parse_comment(i)
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if k < 0: break
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i = k
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continue
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if rawdata.startswith("<?", i):
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k = self.parse_pi(i)
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if k < 0: break
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i = i+k
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continue
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if rawdata.startswith("<!", i):
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# This is some sort of declaration; in "HTML as
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# deployed," this should only be the document type
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# declaration ("<!DOCTYPE html...>").
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k = self.parse_declaration(i)
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if k < 0: break
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i = k
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continue
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elif rawdata[i] == '&':
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if self.literal:
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self.handle_data(rawdata[i])
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i = i+1
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continue
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match = charref.match(rawdata, i)
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if match:
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name = match.group(1)
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self.handle_charref(name)
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i = match.end(0)
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if rawdata[i-1] != ';': i = i-1
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continue
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match = entityref.match(rawdata, i)
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if match:
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name = match.group(1)
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self.handle_entityref(name)
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i = match.end(0)
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if rawdata[i-1] != ';': i = i-1
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continue
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else:
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self.error('neither < nor & ??')
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# We get here only if incomplete matches but
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# nothing else
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match = incomplete.match(rawdata, i)
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if not match:
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self.handle_data(rawdata[i])
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i = i+1
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continue
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j = match.end(0)
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if j == n:
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break # Really incomplete
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self.handle_data(rawdata[i:j])
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i = j
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# end while
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if end and i < n:
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self.handle_data(rawdata[i:n])
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i = n
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self.rawdata = rawdata[i:]
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# XXX if end: check for empty stack
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# Extensions for the DOCTYPE scanner:
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_decl_otherchars = '='
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# Internal -- parse processing instr, return length or -1 if not terminated
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def parse_pi(self, i):
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rawdata = self.rawdata
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if rawdata[i:i+2] != '<?':
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self.error('unexpected call to parse_pi()')
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match = piclose.search(rawdata, i+2)
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if not match:
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return -1
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j = match.start(0)
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self.handle_pi(rawdata[i+2: j])
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j = match.end(0)
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return j-i
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def get_starttag_text(self):
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return self.__starttag_text
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# Internal -- handle starttag, return length or -1 if not terminated
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def parse_starttag(self, i):
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self.__starttag_text = None
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start_pos = i
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rawdata = self.rawdata
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if shorttagopen.match(rawdata, i):
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# SGML shorthand: <tag/data/ == <tag>data</tag>
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# XXX Can data contain &... (entity or char refs)?
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# XXX Can data contain < or > (tag characters)?
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# XXX Can there be whitespace before the first /?
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match = shorttag.match(rawdata, i)
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if not match:
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return -1
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tag, data = match.group(1, 2)
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self.__starttag_text = '<%s/' % tag
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tag = tag.lower()
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k = match.end(0)
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self.finish_shorttag(tag, data)
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self.__starttag_text = rawdata[start_pos:match.end(1) + 1]
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return k
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# XXX The following should skip matching quotes (' or ")
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# As a shortcut way to exit, this isn't so bad, but shouldn't
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# be used to locate the actual end of the start tag since the
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# < or > characters may be embedded in an attribute value.
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match = endbracket.search(rawdata, i+1)
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if not match:
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return -1
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j = match.start(0)
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# Now parse the data between i+1 and j into a tag and attrs
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attrs = []
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if rawdata[i:i+2] == '<>':
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# SGML shorthand: <> == <last open tag seen>
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k = j
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tag = self.lasttag
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else:
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match = tagfind.match(rawdata, i+1)
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if not match:
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self.error('unexpected call to parse_starttag')
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k = match.end(0)
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tag = rawdata[i+1:k].lower()
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self.lasttag = tag
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while k < j:
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match = attrfind.match(rawdata, k)
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if not match: break
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attrname, rest, attrvalue = match.group(1, 2, 3)
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if not rest:
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attrvalue = attrname
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else:
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if (attrvalue[:1] == "'" == attrvalue[-1:] or
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attrvalue[:1] == '"' == attrvalue[-1:]):
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# strip quotes
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attrvalue = attrvalue[1:-1]
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attrvalue = self.entity_or_charref.sub(
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self._convert_ref, attrvalue)
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attrs.append((attrname.lower(), attrvalue))
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k = match.end(0)
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if rawdata[j] == '>':
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j = j+1
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self.__starttag_text = rawdata[start_pos:j]
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self.finish_starttag(tag, attrs)
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return j
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# Internal -- convert entity or character reference
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def _convert_ref(self, match):
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if match.group(2):
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return self.convert_charref(match.group(2)) or \
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'&#%s%s' % match.groups()[1:]
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elif match.group(3):
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return self.convert_entityref(match.group(1)) or \
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'&%s;' % match.group(1)
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else:
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return '&%s' % match.group(1)
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# Internal -- parse endtag
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def parse_endtag(self, i):
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rawdata = self.rawdata
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match = endbracket.search(rawdata, i+1)
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if not match:
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return -1
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j = match.start(0)
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tag = rawdata[i+2:j].strip().lower()
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if rawdata[j] == '>':
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j = j+1
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self.finish_endtag(tag)
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return j
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# Internal -- finish parsing of <tag/data/ (same as <tag>data</tag>)
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def finish_shorttag(self, tag, data):
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self.finish_starttag(tag, [])
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self.handle_data(data)
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self.finish_endtag(tag)
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# Internal -- finish processing of start tag
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# Return -1 for unknown tag, 0 for open-only tag, 1 for balanced tag
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def finish_starttag(self, tag, attrs):
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try:
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method = getattr(self, 'start_' + tag)
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except AttributeError:
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try:
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method = getattr(self, 'do_' + tag)
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except AttributeError:
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self.unknown_starttag(tag, attrs)
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return -1
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else:
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self.handle_starttag(tag, method, attrs)
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return 0
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else:
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self.stack.append(tag)
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self.handle_starttag(tag, method, attrs)
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return 1
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# Internal -- finish processing of end tag
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def finish_endtag(self, tag):
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if not tag:
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found = len(self.stack) - 1
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if found < 0:
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self.unknown_endtag(tag)
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return
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else:
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if tag not in self.stack:
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try:
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method = getattr(self, 'end_' + tag)
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except AttributeError:
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self.unknown_endtag(tag)
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else:
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self.report_unbalanced(tag)
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return
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found = len(self.stack)
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for i in range(found):
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if self.stack[i] == tag: found = i
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while len(self.stack) > found:
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tag = self.stack[-1]
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try:
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method = getattr(self, 'end_' + tag)
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except AttributeError:
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method = None
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if method:
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self.handle_endtag(tag, method)
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else:
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self.unknown_endtag(tag)
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del self.stack[-1]
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# Overridable -- handle start tag
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def handle_starttag(self, tag, method, attrs):
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method(attrs)
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# Overridable -- handle end tag
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def handle_endtag(self, tag, method):
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method()
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# Example -- report an unbalanced </...> tag.
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def report_unbalanced(self, tag):
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if self.verbose:
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print('*** Unbalanced </' + tag + '>')
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print('*** Stack:', self.stack)
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def convert_charref(self, name):
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"""Convert character reference, may be overridden."""
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try:
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n = int(name)
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except ValueError:
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return
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if not 0 <= n <= 127:
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return
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return self.convert_codepoint(n)
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def convert_codepoint(self, codepoint):
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return chr(codepoint)
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def handle_charref(self, name):
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"""Handle character reference, no need to override."""
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replacement = self.convert_charref(name)
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if replacement is None:
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self.unknown_charref(name)
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else:
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self.handle_data(replacement)
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# Definition of entities -- derived classes may override
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entitydefs = \
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{'lt': '<', 'gt': '>', 'amp': '&', 'quot': '"', 'apos': '\''}
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|
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def convert_entityref(self, name):
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"""Convert entity references.
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|
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As an alternative to overriding this method; one can tailor the
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results by setting up the self.entitydefs mapping appropriately.
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"""
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table = self.entitydefs
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if name in table:
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return table[name]
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else:
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return
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def handle_entityref(self, name):
|
||||
"""Handle entity references, no need to override."""
|
||||
replacement = self.convert_entityref(name)
|
||||
if replacement is None:
|
||||
self.unknown_entityref(name)
|
||||
else:
|
||||
self.handle_data(replacement)
|
||||
|
||||
# Example -- handle data, should be overridden
|
||||
def handle_data(self, data):
|
||||
pass
|
||||
|
||||
# Example -- handle comment, could be overridden
|
||||
def handle_comment(self, data):
|
||||
pass
|
||||
|
||||
# Example -- handle declaration, could be overridden
|
||||
def handle_decl(self, decl):
|
||||
pass
|
||||
|
||||
# Example -- handle processing instruction, could be overridden
|
||||
def handle_pi(self, data):
|
||||
pass
|
||||
|
||||
# To be overridden -- handlers for unknown objects
|
||||
def unknown_starttag(self, tag, attrs): pass
|
||||
def unknown_endtag(self, tag): pass
|
||||
def unknown_charref(self, ref): pass
|
||||
def unknown_entityref(self, ref): pass
|
||||
|
||||
|
||||
class TestSGMLParser(SGMLParser):
|
||||
|
||||
def __init__(self, verbose=0):
|
||||
self.testdata = ""
|
||||
SGMLParser.__init__(self, verbose)
|
||||
|
||||
def handle_data(self, data):
|
||||
self.testdata = self.testdata + data
|
||||
if len(repr(self.testdata)) >= 70:
|
||||
self.flush()
|
||||
|
||||
def flush(self):
|
||||
data = self.testdata
|
||||
if data:
|
||||
self.testdata = ""
|
||||
print('data:', repr(data))
|
||||
|
||||
def handle_comment(self, data):
|
||||
self.flush()
|
||||
r = repr(data)
|
||||
if len(r) > 68:
|
||||
r = r[:32] + '...' + r[-32:]
|
||||
print('comment:', r)
|
||||
|
||||
def unknown_starttag(self, tag, attrs):
|
||||
self.flush()
|
||||
if not attrs:
|
||||
print('start tag: <' + tag + '>')
|
||||
else:
|
||||
print('start tag: <' + tag, end=' ')
|
||||
for name, value in attrs:
|
||||
print(name + '=' + '"' + value + '"', end=' ')
|
||||
print('>')
|
||||
|
||||
def unknown_endtag(self, tag):
|
||||
self.flush()
|
||||
print('end tag: </' + tag + '>')
|
||||
|
||||
def unknown_entityref(self, ref):
|
||||
self.flush()
|
||||
print('*** unknown entity ref: &' + ref + ';')
|
||||
|
||||
def unknown_charref(self, ref):
|
||||
self.flush()
|
||||
print('*** unknown char ref: &#' + ref + ';')
|
||||
|
||||
def unknown_decl(self, data):
|
||||
self.flush()
|
||||
print('*** unknown decl: [' + data + ']')
|
||||
|
||||
def close(self):
|
||||
SGMLParser.close(self)
|
||||
self.flush()
|
||||
|
||||
|
||||
def test(args = None):
|
||||
import sys
|
||||
|
||||
if args is None:
|
||||
args = sys.argv[1:]
|
||||
|
||||
if args and args[0] == '-s':
|
||||
args = args[1:]
|
||||
klass = SGMLParser
|
||||
else:
|
||||
klass = TestSGMLParser
|
||||
|
||||
if args:
|
||||
file = args[0]
|
||||
else:
|
||||
file = 'test.html'
|
||||
|
||||
if file == '-':
|
||||
f = sys.stdin
|
||||
else:
|
||||
try:
|
||||
f = open(file, 'r')
|
||||
except IOError as msg:
|
||||
print(file, ":", msg)
|
||||
sys.exit(1)
|
||||
|
||||
data = f.read()
|
||||
if f is not sys.stdin:
|
||||
f.close()
|
||||
|
||||
x = klass()
|
||||
for c in data:
|
||||
x.feed(c)
|
||||
x.close()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
test()
|
||||
Loading…
Reference in New Issue
Block a user