def collect_font_face_rules(self, container, processed, spine_name, sheet, sheet_name):
if sheet_name in processed:
sheet_rules = processed[sheet_name]
else:
sheet_rules = []
if sheet_name != spine_name:
processed[sheet_name] = sheet_rules
for rule, base_name, rule_index in iterrules(container, sheet_name, rules=sheet, rule_type='FONT_FACE_RULE'):
cssdict = {}
for prop in iterdeclaration(rule.style):
if prop.name == 'font-family':
cssdict['font-family'] = [icu_lower(x) for x in parse_font_family(prop.propertyValue.cssText)]
elif prop.name.startswith('font-'):
cssdict[prop.name] = prop.propertyValue[0].value
elif prop.name == 'src':
for val in prop.propertyValue:
x = val.value
fname = container.href_to_name(x, sheet_name)
if container.has_name(fname):
cssdict['src'] = fname
break
else:
container.log.warn('The @font-face rule refers to a font file that does not exist in the book: %s' % prop.propertyValue.cssText)
if 'src' not in cssdict:
continue
ff = cssdict.get('font-family')
if not ff or ff[0] in bad_fonts:
continue
normalize_font_properties(cssdict)
prepare_font_rule(cssdict)
sheet_rules.append(cssdict)
self.font_rule_map[spine_name].extend(sheet_rules)
def change_font_in_declaration(style, old_name, new_name=None):
changed = False
ff = style.getProperty('font-family')
if ff is not None:
fams = parse_font_family(ff.propertyValue.cssText)
nfams = filter(None, [new_name if x == old_name else x for x in fams])
if fams != nfams:
if nfams:
ff.propertyValue.cssText = serialize_font_family(nfams)
else:
style.removeProperty(ff.name)
changed = True
ff = style.getProperty('font')
if ff is not None:
props = parse_font(ff.propertyValue.cssText)
fams = props.get('font-family') or []
nfams = filter(None, [new_name if x == old_name else x for x in fams])
if fams != nfams:
props['font-family'] = nfams
if nfams:
ff.propertyValue.cssText = serialize_font(props)
else:
style.removeProperty(ff.name)
changed = True
return changed
def change_font_in_declaration(style, old_name, new_name=None):
changed = False
ff = style.getProperty('font-family')
if ff is not None:
fams = parse_font_family(css_text(ff.propertyValue))
nfams = list(
filter(None, [new_name if x == old_name else x for x in fams]))
if fams != nfams:
if nfams:
ff.propertyValue.cssText = serialize_font_family(nfams)
else:
style.removeProperty(ff.name)
changed = True
ff = style.getProperty('font')
if ff is not None:
props = parse_font(css_text(ff.propertyValue))
fams = props.get('font-family') or []
nfams = list(
filter(None, [new_name if x == old_name else x for x in fams]))
if fams != nfams:
props['font-family'] = nfams
if nfams:
ff.propertyValue.cssText = serialize_font(props)
else:
style.removeProperty(ff.name)
changed = True
return changed
def collect_font_face_rules(self, container, processed, spine_name, sheet, sheet_name):
if sheet_name in processed:
sheet_rules = processed[sheet_name]
else:
sheet_rules = []
if sheet_name != spine_name:
processed[sheet_name] = sheet_rules
for rule, base_name, rule_index in iterrules(container, sheet_name, rules=sheet, rule_type='FONT_FACE_RULE'):
cssdict = {}
for prop in iterdeclaration(rule.style):
if prop.name == 'font-family':
cssdict['font-family'] = [icu_lower(x) for x in parse_font_family(prop.propertyValue.cssText)]
elif prop.name.startswith('font-'):
cssdict[prop.name] = prop.propertyValue[0].value
elif prop.name == 'src':
for val in prop.propertyValue:
x = val.value
fname = container.href_to_name(x, sheet_name)
if container.has_name(fname):
cssdict['src'] = fname
break
else:
container.log.warn('The @font-face rule refers to a font file that does not exist in the book: %s' % prop.propertyValue.cssText)
if 'src' not in cssdict:
continue
ff = cssdict.get('font-family')
if not ff or ff[0] in bad_fonts:
continue
normalize_font_properties(cssdict)
prepare_font_rule(cssdict)
sheet_rules.append(cssdict)
self.font_rule_map[spine_name].extend(sheet_rules)
def normalize_style_declaration(decl, sheet_name):
ans = {}
for prop in iterdeclaration(decl):
if prop.name == 'font-family':
# Needed because of https://bitbucket.org/cthedot/cssutils/issues/66/incorrect-handling-of-spaces-in-font
prop.propertyValue.cssText = serialize_font_family(parse_font_family(css_text(prop.propertyValue)))
ans[prop.name] = Values(prop.propertyValue, sheet_name, prop.priority)
return ans
def normalize_style_declaration(decl, sheet_name):
ans = {}
for prop in iterdeclaration(decl):
if prop.name == 'font-family':
# Needed because of https://bitbucket.org/cthedot/cssutils/issues/66/incorrect-handling-of-spaces-in-font
prop.propertyValue.cssText = serialize_font_family(parse_font_family(css_text(prop.propertyValue)))
ans[prop.name] = Values(prop.propertyValue, sheet_name, prop.priority)
return ans
def font_family_data_from_sheet(sheet, families):
for rule in sheet.cssRules:
if rule.type == rule.STYLE_RULE:
font_family_data_from_declaration(rule.style, families)
elif rule.type == rule.FONT_FACE_RULE:
ff = rule.style.getProperty('font-family')
if ff is not None:
for f in parse_font_family(css_text(ff.propertyValue)):
families[f] = True
def font_family_data_from_sheet(sheet, families):
for rule in sheet.cssRules:
if rule.type == rule.STYLE_RULE:
font_family_data_from_declaration(rule.style, families)
elif rule.type == rule.FONT_FACE_RULE:
ff = rule.style.getProperty('font-family')
if ff is not None:
for f in parse_font_family(ff.propertyValue.cssText):
families[f] = True
def test_parse_font_family(self):
' Test parsing of font-family values '
for raw, q in iteritems({
'"1as"': ['1as'],
'A B C, serif': ['A B C', 'serif'],
r'Red\/Black': ['Red/Black'],
'A B': ['A B'],
r'Ahem\!': ['Ahem!'],
r'"Ahem!"': ['Ahem!'],
'€42': ['€42'],
r'Hawaii\ 5-0': ['Hawaii 5-0'],
r'"X \"Y"': ['X "Y'],
'A B, C D, "E", serif': ['A B', 'C D', 'E', 'serif'],
'': [],
'"", a': ['a'],
}):
self.ae(q, parse_font_family(raw))
for single in ('serif', 'sans-serif', 'A B C'):
self.ae([single], parse_font_family(single))
def test_parse_font_family(self):
' Test parsing of font-family values '
for raw, q in iteritems({
'"1as"': ['1as'],
'A B C, serif': ['A B C', 'serif'],
r'Red\/Black': ['Red/Black'],
'A B': ['A B'],
r'Ahem\!': ['Ahem!'],
r'"Ahem!"': ['Ahem!'],
'€42': ['€42'],
r'Hawaii\ 5-0': ['Hawaii 5-0'],
r'"X \"Y"': ['X "Y'],
'A B, C D, "E", serif': ['A B', 'C D', 'E', 'serif'],
'': [],
'"", a': ['a'],
}):
self.ae(q, parse_font_family(raw))
for single in ('serif', 'sans-serif', 'A B C'):
self.ae([single], parse_font_family(single))
def check_fonts(container):
font_map = {}
errors = []
for name, mt in container.mime_map.iteritems():
if mt in OEB_FONTS:
raw = container.raw_data(name)
try:
name_map = get_all_font_names(raw)
except Exception as e:
errors.append(InvalidFont(_('Not a valid font: %s') % e, name))
continue
font_map[name] = name_map.get('family_name', None) or name_map.get(
'preferred_family_name', None) or name_map.get(
'wws_family_name', None)
try:
embeddable, fs_type = is_font_embeddable(raw)
except UnsupportedFont:
embeddable = True
if not embeddable:
errors.append(NotEmbeddable(name, fs_type))
sheets = []
for name, mt in container.mime_map.iteritems():
if mt in OEB_STYLES:
try:
sheets.append((name, container.parsed(name), None))
except Exception:
pass # Could not parse, ignore
elif mt in OEB_DOCS:
for style in container.parsed(name).xpath(
'//*[local-name()="style"]'):
if style.get('type', 'text/css') == 'text/css' and style.text:
sheets.append((name, container.parse_css(style.text),
style.sourceline))
for name, sheet, line_offset in sheets:
for rule in sheet.cssRules.rulesOfType(CSSRule.FONT_FACE_RULE):
src = rule.style.getPropertyCSSValue('src')
if src is not None and src.length > 0:
href = getattr(src.item(0), 'uri', None)
if href is not None:
fname = container.href_to_name(href, name)
font_name = font_map.get(fname, None)
if font_name is None:
continue
families = parse_font_family(
rule.style.getPropertyValue('font-family'))
if families:
if families[0] != font_name:
errors.append(
FontAliasing(font_name, families[0], name,
line_offset))
return errors
def font_family_data_from_declaration(style, families):
font_families = []
f = style.getProperty('font')
if f is not None:
f = normalize_font(f.propertyValue, font_family_as_list=True).get('font-family', None)
if f is not None:
font_families = [unquote(x) for x in f]
f = style.getProperty('font-family')
if f is not None:
font_families = parse_font_family(f.propertyValue.cssText)
for f in font_families:
families[f] = families.get(f, False)
def process_fonts(self):
''' Make sure all fonts are embeddable. Also remove some fonts that cause problems. '''
from calibre.ebooks.oeb.base import urlnormalize
from calibre.utils.fonts.utils import remove_embed_restriction
processed = set()
for item in list(self.oeb.manifest):
if not hasattr(item.data, 'cssRules'):
continue
for i, rule in enumerate(item.data.cssRules):
if rule.type == rule.FONT_FACE_RULE:
try:
s = rule.style
src = s.getProperty('src').propertyValue[0].uri
except:
continue
path = item.abshref(src)
ff = self.oeb.manifest.hrefs.get(urlnormalize(path), None)
if ff is None:
continue
raw = nraw = ff.data
if path not in processed:
processed.add(path)
try:
nraw = remove_embed_restriction(raw)
except:
continue
if nraw != raw:
ff.data = nraw
self.oeb.container.write(path, nraw)
elif iswindows and rule.type == rule.STYLE_RULE:
from tinycss.fonts3 import parse_font_family, serialize_font_family
s = rule.style
f = s.getProperty(u'font-family')
if f is not None:
font_families = parse_font_family(
f.propertyValue.cssText)
ff = [
x for x in font_families if x.lower() != u'courier'
]
if len(ff) != len(font_families):
if 'courier' not in self.filtered_font_warnings:
# See https://bugs.launchpad.net/bugs/1665835
self.filtered_font_warnings.add(u'courier')
self.log.warn(
u'Removing courier font family as it does not render on windows'
)
f.propertyValue.cssText = serialize_font_family(
ff or [u'monospace'])
def change_font_in_sheet(container, sheet, old_name, new_name, sheet_name):
changed = False
removals = []
for rule in sheet.cssRules:
if rule.type == rule.STYLE_RULE:
changed |= change_font_in_declaration(rule.style, old_name, new_name)
elif rule.type == rule.FONT_FACE_RULE:
ff = rule.style.getProperty('font-family')
if ff is not None:
families = {x for x in parse_font_family(ff.propertyValue.cssText)}
if old_name in families:
changed = True
removals.append(rule)
for rule in reversed(removals):
remove_embedded_font(container, sheet, rule, sheet_name)
return changed
def check_fonts(container):
font_map = {}
errors = []
for name, mt in iteritems(container.mime_map):
if mt in OEB_FONTS:
raw = container.raw_data(name)
try:
name_map = get_all_font_names(raw)
except Exception as e:
errors.append(InvalidFont(_('Not a valid font: %s') % e, name))
continue
font_map[name] = name_map.get('family_name', None) or name_map.get('preferred_family_name', None) or name_map.get('wws_family_name', None)
try:
embeddable, fs_type = is_font_embeddable(raw)
except UnsupportedFont:
embeddable = True
if not embeddable:
errors.append(NotEmbeddable(name, fs_type))
sheets = []
for name, mt in iteritems(container.mime_map):
if mt in OEB_STYLES:
try:
sheets.append((name, container.parsed(name), None))
except Exception:
pass # Could not parse, ignore
elif mt in OEB_DOCS:
for style in container.parsed(name).xpath('//*[local-name()="style"]'):
if style.get('type', 'text/css') == 'text/css' and style.text:
sheets.append((name, container.parse_css(style.text), style.sourceline))
for name, sheet, line_offset in sheets:
for rule in sheet.cssRules.rulesOfType(CSSRule.FONT_FACE_RULE):
src = rule.style.getPropertyCSSValue('src')
if src is not None and src.length > 0:
href = getattr(src.item(0), 'uri', None)
if href is not None:
fname = container.href_to_name(href, name)
font_name = font_map.get(fname, None)
if font_name is None:
continue
families = parse_font_family(rule.style.getPropertyValue('font-family'))
if families:
if families[0] != font_name:
errors.append(FontAliasing(font_name, families[0], name, line_offset))
return errors
def get_font_properties(rule, default=None):
'''
Given a CSS rule, extract normalized font properties from
it. Note that shorthand font property should already have been expanded
by the CSS flattening code.
'''
props = {}
s = rule.style
for q in ('font-family', 'src', 'font-weight', 'font-stretch',
'font-style'):
g = 'uri' if q == 'src' else 'value'
try:
val = s.getProperty(q).propertyValue[0]
val = getattr(val, g)
if q == 'font-family':
val = parse_font_family(
css_text(s.getProperty(q).propertyValue))
if val and val[0] == 'inherit':
val = None
except (IndexError, KeyError, AttributeError, TypeError, ValueError):
val = None if q in {'src', 'font-family'} else default
if q in {'font-weight', 'font-stretch', 'font-style'}:
val = unicode_type(val).lower() if (val or val == 0) else val
if val == 'inherit':
val = default
if q == 'font-weight':
val = {'normal': '400', 'bold': '700'}.get(val, val)
if val not in {
'100', '200', '300', '400', '500', '600', '700', '800',
'900', 'bolder', 'lighter'
}:
val = default
if val == 'normal':
val = '400'
elif q == 'font-style':
if val not in {'normal', 'italic', 'oblique'}:
val = default
elif q == 'font-stretch':
if val not in {
'normal', 'ultra-condensed', 'extra-condensed',
'condensed', 'semi-condensed', 'semi-expanded', 'expanded',
'extra-expanded', 'ultra-expanded'
}:
val = default
props[q] = val
return props
def process_fonts(self):
''' Make sure all fonts are embeddable. Also remove some fonts that causes problems. '''
from calibre.ebooks.oeb.base import urlnormalize
from calibre.utils.fonts.utils import remove_embed_restriction
processed = set()
for item in list(self.oeb.manifest):
if not hasattr(item.data, 'cssRules'):
continue
for i, rule in enumerate(item.data.cssRules):
if rule.type == rule.FONT_FACE_RULE:
try:
s = rule.style
src = s.getProperty('src').propertyValue[0].uri
except:
continue
path = item.abshref(src)
ff = self.oeb.manifest.hrefs.get(urlnormalize(path), None)
if ff is None:
continue
raw = nraw = ff.data
if path not in processed:
processed.add(path)
try:
nraw = remove_embed_restriction(raw)
except:
continue
if nraw != raw:
ff.data = nraw
self.oeb.container.write(path, nraw)
elif iswindows and rule.type == rule.STYLE_RULE:
from tinycss.fonts3 import parse_font_family, serialize_font_family
s = rule.style
f = s.getProperty(u'font-family')
if f is not None:
font_families = parse_font_family(f.propertyValue.cssText)
ff = [x for x in font_families if x.lower() != u'courier']
if len(ff) != len(font_families):
if 'courier' not in self.filtered_font_warnings:
# See https://bugs.launchpad.net/bugs/1665835
self.filtered_font_warnings.add(u'courier')
self.log.warn(u'Removing courier font family as it does not render on windows')
f.propertyValue.cssText = serialize_font_family(ff or [u'monospace'])
def get_font_properties(rule, default=None):
'''
Given a CSS rule, extract normalized font properties from
it. Note that shorthand font property should already have been expanded
by the CSS flattening code.
'''
props = {}
s = rule.style
for q in ('font-family', 'src', 'font-weight', 'font-stretch',
'font-style'):
g = 'uri' if q == 'src' else 'value'
try:
val = s.getProperty(q).propertyValue[0]
val = getattr(val, g)
if q == 'font-family':
val = parse_font_family(s.getProperty(q).propertyValue.cssText)
if val and val[0] == 'inherit':
val = None
except (IndexError, KeyError, AttributeError, TypeError, ValueError):
val = None if q in {'src', 'font-family'} else default
if q in {'font-weight', 'font-stretch', 'font-style'}:
val = unicode(val).lower() if (val or val == 0) else val
if val == 'inherit':
val = default
if q == 'font-weight':
val = {'normal':'400', 'bold':'700'}.get(val, val)
if val not in {'100', '200', '300', '400', '500', '600', '700',
'800', '900', 'bolder', 'lighter'}:
val = default
if val == 'normal':
val = '400'
elif q == 'font-style':
if val not in {'normal', 'italic', 'oblique'}:
val = default
elif q == 'font-stretch':
if val not in {'normal', 'ultra-condensed', 'extra-condensed',
'condensed', 'semi-condensed', 'semi-expanded',
'expanded', 'extra-expanded', 'ultra-expanded'}:
val = default
props[q] = val
return props
