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Improve handling of anchors

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This commit is contained in:
Kovid Goyal 2007-09-13 18:25:09 +00:00
parent cf09ac8b32
commit b7a9a8cbfd
1 changed files with 48 additions and 54 deletions
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102
src/libprs500/ebooks/lrf/html/convert_from.py
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@ -1073,6 +1073,53 @@ class HTMLConverter(object):
return True return True
return False return False
def process_anchor(self, tag, tag_css, tag_pseudo_css):
key = 'name' if tag.has_key('name') else 'id'
name = tag[key].replace('#', '')
if self.anchor_to_previous:
self.process_children(tag, tag_css, tag_pseudo_css)
for c in self.anchor_to_previous.contents:
if isinstance(c, (TextBlock, ImageBlock)):
self.targets[self.target_prefix+tag[key]] = c
return
tb = self.book.create_text_block()
tb.Paragraph(" ")
self.anchor_to_previous.append(tb)
self.targets[self.target_prefix+name] = tb
return
previous = self.current_block
self.process_children(tag, tag_css, tag_pseudo_css)
target = None
if self.current_block == previous:
self.current_block.must_append = True
target = self.current_block
else:
found = False
for item in self.current_page.contents:
if item == previous:
found = True
continue
if found:
target = item
break
if target and not isinstance(target, (TextBlock, ImageBlock)):
if isinstance(target, RuledLine):
target = self.book.create_text_block(textStyle=self.current_block.textStyle,
blockStyle=self.current_block.blockStyle)
target.Paragraph(' ')
self.current_page.append(target)
else:
target = BlockSpace()
self.current_page.append(target)
if target == None:
if self.current_block.has_text():
target = self.current_block
else:
target = BlockSpace()
self.current_page.append(target)
self.targets[self.target_prefix+name] = target
def parse_tag(self, tag, parent_css): def parse_tag(self, tag, parent_css):
try: try:
tagname = tag.name.lower() tagname = tag.name.lower()
@ -1110,60 +1157,7 @@ class HTMLConverter(object):
key = 'name' if tag.has_key('name') else 'id' key = 'name' if tag.has_key('name') else 'id'
self.targets[self.target_prefix+tag[key]] = self.current_block self.targets[self.target_prefix+tag[key]] = self.current_block
elif tag.has_key('name') or tag.has_key('id'): elif tag.has_key('name') or tag.has_key('id'):
key = 'name' if tag.has_key('name') else 'id' self.process_anchor(tag, tag_css, tag_pseudo_css)
name = tag[key].replace('#', '')
if self.anchor_to_previous:
self.process_children(tag, tag_css, tag_pseudo_css)
for c in self.anchor_to_previous.contents:
if isinstance(c, (TextBlock, ImageBlock)):
self.targets[self.target_prefix+tag[key]] = c
return
tb = self.book.create_text_block()
tb.Paragraph(" ")
self.anchor_to_previous.append(tb)
self.targets[self.target_prefix+name] = tb
return
previous = self.current_block
self.process_children(tag, tag_css, tag_pseudo_css)
target = None
if self.current_block == previous:
if self.current_para.has_text():
self.current_para.append_to(self.current_block)
self.current_para = Paragraph()
target = self.current_block
else: # Empty <a> element
self.current_page.append(self.current_block)
self.current_block = self.book.create_text_block(
textStyle=self.current_block.textStyle,
blockStyle=self.current_block.blockStyle)
target = self.book.create_text_block()
self.current_page.append(target)
else:
found = False
for item in self.current_page.contents:
if item == previous:
found = True
continue
if found:
target = item
break
if target and not isinstance(target, (TextBlock, ImageBlock)):
if isinstance(target, RuledLine):
target = self.book.create_text_block(textStyle=self.current_block.textStyle,
blockStyle=self.current_block.blockStyle)
target.Paragraph(' ')
self.current_page.append(target)
else:
target = BlockSpace()
self.current_page.append(target)
if target == None:
if self.current_block.has_text():
target = self.current_block
else:
target = BlockSpace()
self.current_page.append(target)
self.targets[self.target_prefix+name] = target
elif tagname == 'img': elif tagname == 'img':
if tag.has_key('src') and os.access(unquote(tag['src']), os.R_OK): if tag.has_key('src') and os.access(unquote(tag['src']), os.R_OK):
path = os.path.abspath(unquote(tag['src'])) path = os.path.abspath(unquote(tag['src']))