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Handle escaped backslashes in the new sqp

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Kovid Goyal 2013-05-09 12:51:41 +05:30
commit 83c3312223
1 changed files with 16 additions and 3 deletions
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19
src/calibre/utils/search_query_parser.py
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@ -135,7 +135,7 @@ class Parser(object):
(r'[()]', lambda x,t: (1, t)),
(r'@.+?:[^")\s]+', lambda x,t: (2, unicode(t))),
(r'[^"()\s]+', lambda x,t: (2, unicode(t))),
(r'".*?((?<!\\)")', lambda x,t: (3, t[1:-1].replace('\\"', '"'))),
(r'".*?((?<!\\)")', lambda x,t: (3, t[1:-1])),
(r'\s+', None)
], flags=re.DOTALL)
@ -168,7 +168,16 @@ class Parser(object):
def parse(self, expr, locations):
self.locations = locations
# Strip out escaped backslashes and escaped quotes so that the
# lex scanner doesn't get confused. We put them back later.
expr = expr.replace(u'\\\\', u'\x01').replace(u'\\"', u'\x02')
self.tokens = self.lex_scanner.scan(expr)[0]
for (i,tok) in enumerate(self.tokens):
tt, tv = tok
if tt == self.WORD or tt == self.QUOTED_WORD:
self.tokens[i] = (tt, tv.replace(u'\x01', u'\\').replace(u'\x02', u'"'))
self.current_token = 0
prog = self.or_expression()
if not self.is_eof():
@ -658,7 +667,7 @@ class Tester(SearchQueryParser):
u'John Scalzi',
u'Tor Science Fiction',
u'html,lrf'],
343: [u'The Last Colony', u'John Scalzi', u'Tor Books', u'html,lrf'],
343: [u'The Last Colony', u'John S"calzi', u'Tor Books', u'html,lrf'],
344: [u'Gossip Girl', u'Cecily von Ziegesar', u'Warner Books', u'lrf,rtf'],
347: [u'Little Brother', u'Cory Doctorow', u'Tor Teen', u'lrf'],
348: [u'The Reality Dysfunction',
@ -676,7 +685,7 @@ class Tester(SearchQueryParser):
u'lit,lrf'],
356: [u'The Naked God', u'Peter F. Hamilton', u'Aspect', u'lit,lrf'],
421: [u'A Shadow in Summer', u'Daniel Abraham', u'Tor Fantasy', u'lrf,rar'],
427: [u'Lonesome Dove', u'Larry McMurtry', None, u'lit,lrf'],
427: [u'Lonesome Dove', u'Larry M\\cMurtry', None, u'lit,lrf'],
440: [u'Ghost', u'John Ringo', u'Baen', u'lit,lrf'],
441: [u'Kildar', u'John Ringo', u'Baen', u'lit,lrf'],
443: [u'Hidden Empire ', u'Kevin J. Anderson', u'Aspect', u'lrf,rar'],
@ -702,6 +711,10 @@ class Tester(SearchQueryParser):
'publisher:london:thames': set([13]),
'"(1977)"': set([13]),
'jack weatherford orc': set([30]),
'S\\"calzi': {343},
'author:S\\"calzi': {343},
'"S\\"calzi"': {343},
'M\\\\cMurty': {427},
}
fields = {'title':0, 'author':1, 'publisher':2, 'tag':3}