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further cleanup to chapter markup

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This commit is contained in:
ldolse 2010-11-21 17:37:56 +08:00
parent c378a90a92
commit fae3252d50
1 changed files with 11 additions and 7 deletions
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16
src/calibre/ebooks/conversion/utils.py
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@ -168,29 +168,30 @@ class PreProcessor(object):
#print "blanks between paragraphs is marked True"
else:
blanks_between_paragraphs = False
#self.dump(html, 'before_chapter_markup')
self.dump(html, 'before_chapter_markup')
# detect chapters/sections to match xpath or splitting logic
#
# Build the Regular Expressions in pieces
init_lookahead = "(?=<(p|div))"
chapter_line_open = "<(?P<outer>p|div)[^>]*>\s*(<(?P<inner1>font|span|[ibu])[^>]*>)?\s*(<(?P<inner2>font|span|[ibu])[^>]*>)?\s*(<(?P<inner3>font|span|[ibu])[^>]*>)?\s*"
title_line_open = "<(?P<outer2>p|div)[^>]*>\s*(<(?P<inner4>font|span|[ibu])[^>]*>)?\s*(<(?P<inner5>font|span|[ibu])[^>]*>)?\s*(<(?P<inner6>font|span|[ibu])[^>]*>)?\s*"
chapter_header_open = r"(?P<chap>"
title_header_open = r"(?P<title>"
chapter_header_close = ")\s*"
title_header_close = ")"
chapter_line_close = "(</(?P=inner3)>)?\s*(</(?P=inner2)>)?\s*(</(?P=inner1)>)?\s*</(?P=outer)>"
title_line_close = "(</(?P=inner6)>)?\s*(</(?P=inner5)>)?\s*(</(?P=inner4)>)?\s*</(?P=outer2)>"
if blanks_between_paragraphs:
blank_lines = "(\s*<p[^>]*>\s*</p>){0,2}\s*"
else:
blank_lines = ""
opt_title_open = "("
title_line_open = "<(?P<outer2>p|div)[^>]*>\s*(<(?P<inner4>font|span|[ibu])[^>]*>)?\s*(<(?P<inner5>font|span|[ibu])[^>]*>)?\s*(<(?P<inner6>font|span|[ibu])[^>]*>)?\s*"
title_header_open = "(?P<title>"
title_header_close = ")\s*"
title_line_close = "(</(?P=inner6)>)?\s*(</(?P=inner5)>)?\s*(</(?P=inner4)\s[^>]*>)?\s*</(?P=outer2)>"
opt_title_close = ")?"
n_lookahead_open = "\s+(?!"
n_lookahead_close = ")"
default_title = r"(\s*[\w\'\"-]+){1,5}?(?=<)"
default_title = r"\s{0,3}([\w\'\"-]+\s{0,3}){1,5}?(?=<)"
min_chapters = 10
heading = re.compile('<h[1-3][^>]*>', re.IGNORECASE)
@ -205,6 +206,7 @@ class PreProcessor(object):
[r"\s*[^'\"]?([A-Z#]+(\s|-){0,3}){1,5}\s*", False, "Searching for chapters with Uppercase Characters" ] # Uppercase Chapters
]
# Start with most typical chapter headings, get more aggressive until one works
for [chapter_type, lookahead_ignorecase, log_message] in chapter_types:
if self.html_preprocess_sections >= min_chapters:
break
@ -215,7 +217,9 @@ class PreProcessor(object):
chapter_marker = init_lookahead+full_chapter_line+blank_lines+n_lookahead_open+n_lookahead+n_lookahead_close+opt_title_open+title_line_open+title_header_open+default_title+title_header_close+title_line_close+opt_title_close
chapdetect = re.compile(r'%s' % chapter_marker, re.IGNORECASE)
else:
print "Chapter line is:\n"+full_chapter_line
chapter_marker = init_lookahead+full_chapter_line+blank_lines+opt_title_open+title_line_open+title_header_open+default_title+title_header_close+title_line_close+opt_title_close+n_lookahead_open+n_lookahead+n_lookahead_close
print "\nFull regex is:\n"+chapter_marker
chapdetect = re.compile(r'%s' % chapter_marker, re.UNICODE)
html = chapdetect.sub(self.chapter_head, html)