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Automatically migrate some epub|type selectors

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Kovid Goyal 2019-10-04 05:43:25 +05:30
parent abe30ca2fb
commit 769cf0da51
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1 changed files with 26 additions and 0 deletions
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26
src/calibre/srv/render_book.py
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@ -93,11 +93,37 @@ def transform_declaration(decl):
return changed
def replace_epub_type_selector(m):
which = m.group(2)
roleval = EPUB_TYPE_MAP.get(which)
if roleval is None:
return m.group()
return 'role{}"{}"'.format(m.group(1), roleval)
def epub_type_pat():
ans = getattr(epub_type_pat, 'ans', None)
if ans is None:
ans = epub_type_pat.ans = re.compile(r'epub\|type([$*~]?=)"(\S+)"')
return ans
def transform_selector(rule):
selector = rule.selectorText
if 'epub|type' in selector:
ns, num = epub_type_pat().subn(replace_epub_type_selector, selector)
if num > 0 and ns != selector:
rule.selectorText = ns
return True
def transform_sheet(sheet):
changed = False
for rule in sheet.cssRules.rulesOfType(CSSRule.STYLE_RULE):
if transform_declaration(rule.style):
changed = True
if transform_selector(rule):
changed = True
return changed