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Make inline style transformation its own re-useable function

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Kovid Goyal 2019-10-15 18:01:50 +05:30
parent be58929e95
commit 07bd906363
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GPG Key ID: 06BC317B515ACE7C
1 changed files with 25 additions and 22 deletions
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47
src/calibre/ebooks/oeb/polish/css.py
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@ -221,6 +221,29 @@ def filter_sheet(sheet, properties=()):
return changed
def transform_inline_styles(container, name, transform_sheet, transform_style):
root = container.parsed(name)
changed = False
for style in root.xpath('//*[local-name()="style"]'):
if style.text and (style.get('type') or 'text/css').lower() == 'text/css':
sheet = container.parse_css(style.text)
if transform_sheet(sheet):
changed = True
style.text = force_unicode(sheet.cssText, 'utf-8')
pretty_script_or_style(container, style)
for elem in root.xpath('//*[@style]'):
text = elem.get('style', None)
if text:
style = container.parse_css(text, is_declaration=True)
if transform_style(style):
changed = True
if style.length == 0:
del elem.attrib['style']
else:
elem.set('style', force_unicode(style.getCssText(separator=' '), 'utf-8'))
return changed
def transform_css(container, transform_sheet=None, transform_style=None, names=()):
if not names:
types = OEB_STYLES | OEB_DOCS
@ -235,31 +258,11 @@ def transform_css(container, transform_sheet=None, transform_style=None, names=(
mt = container.mime_map[name]
if mt in OEB_STYLES:
sheet = container.parsed(name)
filtered = transform_sheet(sheet)
if filtered:
if transform_sheet(sheet):
container.dirty(name)
doc_changed = True
elif mt in OEB_DOCS:
root = container.parsed(name)
changed = False
for style in root.xpath('//*[local-name()="style"]'):
if style.text and (style.get('type') or 'text/css').lower() == 'text/css':
sheet = container.parse_css(style.text)
if transform_sheet(sheet):
changed = True
style.text = force_unicode(sheet.cssText, 'utf-8')
pretty_script_or_style(container, style)
for elem in root.xpath('//*[@style]'):
text = elem.get('style', None)
if text:
style = container.parse_css(text, is_declaration=True)
if transform_style(style):
changed = True
if style.length == 0:
del elem.attrib['style']
else:
elem.set('style', force_unicode(style.getCssText(separator=' '), 'utf-8'))
if changed:
if transform_inline_styles(container, name, transform_sheet, transform_style):
container.dirty(name)
doc_changed = True