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Diffstat (limited to 'plugins/MirOTR/ekhtml/testsuite/ek_sgmllib.py')
-rw-r--r-- | plugins/MirOTR/ekhtml/testsuite/ek_sgmllib.py | 489 |
1 files changed, 0 insertions, 489 deletions
diff --git a/plugins/MirOTR/ekhtml/testsuite/ek_sgmllib.py b/plugins/MirOTR/ekhtml/testsuite/ek_sgmllib.py deleted file mode 100644 index f71496d3ce..0000000000 --- a/plugins/MirOTR/ekhtml/testsuite/ek_sgmllib.py +++ /dev/null @@ -1,489 +0,0 @@ -"""A parser for SGML, using the derived class as a static DTD.""" - -# Stolen from the Python 2.0 distribution and tweaked by JMT - -# XXX This only supports those SGML features used by HTML. - -# XXX There should be a way to distinguish between PCDATA (parsed -# character data -- the normal case), RCDATA (replaceable character -# data -- only char and entity references and end tags are special) -# and CDATA (character data -- only end tags are special). - - -import re -import string - - -# Regular expressions used for parsing - -interesting = re.compile('[&<]') -incomplete = re.compile('&([a-zA-Z][a-zA-Z0-9]*|#[0-9]*)?|' - '<([a-zA-Z][^<>]*|' - '/([a-zA-Z][^<>]*)?|' - '![^<>]*)?') - -entityref = re.compile('&([a-zA-Z][-.a-zA-Z0-9]*);') -charref = re.compile('&#([0-9]+)[^0-9];') - -starttagopen = re.compile('<[>a-zA-Z]') -shorttagopen = re.compile('<[a-zA-Z][-.a-zA-Z0-9]*/') -shorttag = re.compile('<([a-zA-Z][-.a-zA-Z0-9]*)/([^/]*)/') -piopen = re.compile('<\?') -piclose = re.compile('>') -endtagopen = re.compile('</[<>a-zA-Z]') -endbracket = re.compile('[<>]') -special = re.compile('<![^<>]*>') -commentopen = re.compile('<!--') -commentclose = re.compile('--[%s]*>' % string.whitespace) -tagfind = re.compile('[a-zA-Z][-.a-zA-Z0-9]*') -attrfind = re.compile( - '[%s]*([a-zA-Z_][-.a-zA-Z_0-9]*)' % string.whitespace - + ('([%s]*=[%s]*' % (string.whitespace, string.whitespace)) - + r'(\'[^\'<>]*[\'<>]|"[^"<>]*["<>]|[-a-zA-Z0-9@./:+*%?!&$\(\)_#=~]*))?') - - -# SGML parser base class -- find tags and call handler functions. -# Usage: p = SGMLParser(); p.feed(data); ...; p.close(). -# The dtd is defined by deriving a class which defines methods -# with special names to handle tags: start_foo and end_foo to handle -# <foo> and </foo>, respectively, or do_foo to handle <foo> by itself. -# (Tags are converted to lower case for this purpose.) The data -# between tags is passed to the parser by calling self.handle_data() -# with some data as argument (the data may be split up in arbitrary -# chunks). Entity references are passed by calling -# self.handle_entityref() with the entity reference as argument. - -class SGMLParser: - - # Interface -- initialize and reset this instance - def __init__(self, verbose=0): - self.verbose = verbose - self.reset() - - # Interface -- reset this instance. Loses all unprocessed data - def reset(self): - self.rawdata = '' - self.stack = [] - self.lasttag = '???' - self.nomoretags = 0 - self.literal = 0 - - # For derived classes only -- enter literal mode (CDATA) till EOF - def setnomoretags(self): - self.nomoretags = self.literal = 1 - - # For derived classes only -- enter literal mode (CDATA) - def setliteral(self, *args): - self.literal = 1 - - # Interface -- feed some data to the parser. Call this as - # often as you want, with as little or as much text as you - # want (may include '\n'). (This just saves the text, all the - # processing is done by goahead().) - def feed(self, data): - self.rawdata = self.rawdata + data - self.goahead(0) - - # Interface -- handle the remaining data - def close(self): - self.goahead(1) - - # Internal -- handle data as far as reasonable. May leave state - # and data to be processed by a subsequent call. If 'end' is - # true, force handling all data as if followed by EOF marker. - def goahead(self, end): - rawdata = self.rawdata - i = 0 - n = len(rawdata) - while i < n: - if self.nomoretags: - self.handle_data(rawdata[i:n]) - i = n - break - match = interesting.search(rawdata, i) - if match: j = match.start(0) - else: j = n - if i < j: self.handle_data(rawdata[i:j]) - i = j - if i == n: break - if rawdata[i] == '<': - if starttagopen.match(rawdata, i): - if self.literal: - self.handle_data(rawdata[i]) - i = i+1 - continue - k = self.parse_starttag(i) - if k < 0: break - i = k - continue - if endtagopen.match(rawdata, i): - k = self.parse_endtag(i) - if k < 0: break - i = k - self.literal = 0 - continue - if commentopen.match(rawdata, i): - if self.literal: - self.handle_data(rawdata[i]) - i = i+1 - continue - k = self.parse_comment(i) - if k < 0: break - i = i+k - continue - if piopen.match(rawdata, i): - if self.literal: - self.handle_data(rawdata[i]) - i = i+1 - continue - k = self.parse_pi(i) - if k < 0: break - i = i+k - continue - match = special.match(rawdata, i) - if match: - if self.literal: - self.handle_data(rawdata[i]) - i = i+1 - continue - start = i - i = match.end(0) - self.handle_data(rawdata[start:i]) - continue - elif rawdata[i] == '&': - match = charref.match(rawdata, i) - if match: - name = match.group(1) - self.handle_charref(name) - i = match.end(0) - if rawdata[i-1] != ';': i = i-1 - continue - match = entityref.match(rawdata, i) - if match: - name = match.group(1) - self.handle_entityref(name) - i = match.end(0) - if rawdata[i-1] != ';': i = i-1 - continue - else: - raise RuntimeError, 'neither < nor & ??' - # We get here only if incomplete matches but - # nothing else - match = incomplete.match(rawdata, i) - if not match: - self.handle_data(rawdata[i]) - i = i+1 - continue - j = match.end(0) - if j == n: - break # Really incomplete - self.handle_data(rawdata[i:j]) - i = j - # end while - if end and i < n: - self.handle_data(rawdata[i:n]) - i = n - self.rawdata = rawdata[i:] - # XXX if end: check for empty stack - - # Internal -- parse comment, return length or -1 if not terminated - def parse_comment(self, i): - rawdata = self.rawdata - if rawdata[i:i+4] <> '<!--': - raise RuntimeError, 'unexpected call to handle_comment' - match = commentclose.search(rawdata, i+4) - if not match: - return -1 - j = match.start(0) - self.handle_comment(rawdata[i+4: j]) - j = match.end(0) - return j-i - - # Internal -- parse processing instr, return length or -1 if not terminated - def parse_pi(self, i): - rawdata = self.rawdata - if rawdata[i:i+2] <> '<?': - raise RuntimeError, 'unexpected call to handle_pi' - match = piclose.search(rawdata, i+2) - if not match: - return -1 - j = match.start(0) - self.handle_pi(rawdata[i+2: j]) - j = match.end(0) - return j-i - - __starttag_text = None - def get_starttag_text(self): - return self.__starttag_text - - # Internal -- handle starttag, return length or -1 if not terminated - def parse_starttag(self, i): - self.__starttag_text = None - start_pos = i - rawdata = self.rawdata - if shorttagopen.match(rawdata, i): - # SGML shorthand: <tag/data/ == <tag>data</tag> - # XXX Can data contain &... (entity or char refs)? - # XXX Can data contain < or > (tag characters)? - # XXX Can there be whitespace before the first /? - match = shorttag.match(rawdata, i) - if not match: - return -1 - tag, data = match.group(1, 2) - self.__starttag_text = '<%s/' % tag - tag = string.lower(tag) - k = match.end(0) - self.finish_shorttag(tag, data) - self.__starttag_text = rawdata[start_pos:match.end(1) + 1] - return k - # XXX The following should skip matching quotes (' or ") - match = endbracket.search(rawdata, i+1) - if not match: - return -1 - j = match.start(0) - # Now parse the data between i+1 and j into a tag and attrs - attrs = [] - if rawdata[i:i+2] == '<>': - # SGML shorthand: <> == <last open tag seen> - k = j - self.handle_data('<>') - return k + 1 - else: - match = tagfind.match(rawdata, i+1) - if not match: - raise RuntimeError, 'unexpected call to parse_starttag' - k = match.end(0) - tag = string.lower(rawdata[i+1:k]) - self.lasttag = tag - while k < j: - match = attrfind.match(rawdata, k) - if not match: break - attrname, rest, attrvalue = match.group(1, 2, 3) - if not rest: - attrvalue = attrname - elif attrvalue[:1] == '\'' or attrvalue[:1] == '"': - attrvalue = attrvalue[1:-1] - attrs.append((string.lower(attrname), attrvalue)) - k = match.end(0) - if rawdata[j] == '>': - j = j+1 - self.__starttag_text = rawdata[start_pos:j] - self.finish_starttag(tag, attrs) - return j - - # Internal -- parse endtag - def parse_endtag(self, i): - rawdata = self.rawdata - match = endbracket.search(rawdata, i+1) - if not match: - return -1 - j = match.start(0) - tag = string.lower(string.strip(rawdata[i+2:j])) - if rawdata[j] == '>': - j = j+1 - self.finish_endtag(tag) - return j - - # Internal -- finish parsing of <tag/data/ (same as <tag>data</tag>) - def finish_shorttag(self, tag, data): - self.finish_starttag(tag, []) - self.handle_data(data) - self.finish_endtag(tag) - - # Internal -- finish processing of start tag - # Return -1 for unknown tag, 0 for open-only tag, 1 for balanced tag - def finish_starttag(self, tag, attrs): - try: - method = getattr(self, 'start_' + tag) - except AttributeError: - try: - method = getattr(self, 'do_' + tag) - except AttributeError: - self.unknown_starttag(tag, attrs) - return -1 - else: - self.handle_starttag(tag, method, attrs) - return 0 - else: - self.stack.append(tag) - self.handle_starttag(tag, method, attrs) - return 1 - - # Internal -- finish processing of end tag - def finish_endtag(self, tag): - if not tag: - found = len(self.stack) - 1 - if found < 0: - self.unknown_endtag(tag) - return - else: - if tag not in self.stack: - try: - method = getattr(self, 'end_' + tag) - except AttributeError: - self.unknown_endtag(tag) - else: - self.report_unbalanced(tag) - return - found = len(self.stack) - for i in range(found): - if self.stack[i] == tag: found = i - while len(self.stack) > found: - tag = self.stack[-1] - try: - method = getattr(self, 'end_' + tag) - except AttributeError: - method = None - if method: - self.handle_endtag(tag, method) - else: - self.unknown_endtag(tag) - del self.stack[-1] - - # Overridable -- handle start tag - def handle_starttag(self, tag, method, attrs): - method(attrs) - - # Overridable -- handle end tag - def handle_endtag(self, tag, method): - method() - - # Example -- report an unbalanced </...> tag. - def report_unbalanced(self, tag): - if self.verbose: - print '*** Unbalanced </' + tag + '>' - print '*** Stack:', self.stack - - # Example -- handle character reference, no need to override - def handle_charref(self, name): - try: - n = string.atoi(name) - except string.atoi_error: - self.unknown_charref(name) - return - if not 0 <= n <= 255: - self.unknown_charref(name) - return - self.handle_data(chr(n)) - - # Definition of entities -- derived classes may override - entitydefs = \ - {'lt': '<', 'gt': '>', 'amp': '&', 'quot': '"', 'apos': '\''} - - # Example -- handle entity reference, no need to override - def handle_entityref(self, name): - table = self.entitydefs - if table.has_key(name): - self.handle_data(table[name]) - else: - self.unknown_entityref(name) - return - - # 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 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(`self.testdata`) >= 70: - self.flush() - - def flush(self): - data = self.testdata - if data: - self.testdata = "" - print 'data:', `data` - - def handle_comment(self, data): - self.flush() - r = `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, - for name, value in attrs: - print name + '=' + '"' + value + '"', - 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 close(self): - SGMLParser.close(self) - self.flush() - - -def test(args = None): - import sys - - if not args: - 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, 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() |