def __init__(self, spec):
try:
self.basefont = literal_name(spec['BaseFont'])
except KeyError:
if settings.STRICT:
raise FontError('BaseFont is missing')
self.basefont = 'unknown'
try:
(descriptor, widths) = FontMetricsDB.get_metrics(self.basefont)
except KeyError:
descriptor = dict_value(spec.get('FontDescriptor', {}))
firstchar = int_value(spec.get('FirstChar', 0))
#lastchar = int_value(spec.get('LastChar', 255))
widths = list_value(spec.get('Widths', [0] * 256))
widths = dict((i + firstchar, w) for (i, w) in enumerate(widths))
PDFSimpleFont.__init__(self, descriptor, widths, spec)
if 'Encoding' not in spec and 'FontFile' in descriptor:
# try to recover the missing encoding info from the font file.
self.fontfile = PDFStream.validated_stream(
descriptor.get('FontFile'))
length1 = int_value(self.fontfile['Length1'])
data = self.fontfile.get_data()[:length1]
parser = Type1FontHeaderParser(BytesIO(data))
self.cid2unicode = parser.get_encoding()
return
def __init__(self, spec):
firstchar = int_value(spec.get('FirstChar', 0))
#lastchar = int_value(spec.get('LastChar', 0))
widths = list_value(spec.get('Widths', [0] * 256))
widths = dict((i + firstchar, w) for (i, w) in enumerate(widths))
if 'FontDescriptor' in spec:
descriptor = dict_value(spec['FontDescriptor'])
else:
descriptor = {
'Ascent': 0,
'Descent': 0,
'FontBBox': spec['FontBBox']
}
PDFSimpleFont.__init__(self, descriptor, widths, spec)
self.matrix = tuple(list_value(spec.get('FontMatrix')))
(_, self.descent, _, self.ascent) = self.bbox
(self.hscale, self.vscale) = apply_matrix_norm(self.matrix, (1, 1))
return
def __init__(self, spec, strict=settings.STRICT):
try:
self.basefont = literal_name(spec['BaseFont'])
except KeyError:
if strict:
raise FontError('BaseFont is missing')
self.basefont = 'unknown'
self.cidsysteminfo = dict_value(spec.get('CIDSystemInfo', {}))
self.cidcoding = '%s-%s' % (
resolve1(self.cidsysteminfo.get('Registry',
b'unknown')).decode("latin1"),
resolve1(self.cidsysteminfo.get('Ordering',
b'unknown')).decode("latin1"))
try:
name = literal_name(spec['Encoding'])
except KeyError:
if strict:
raise FontError('Encoding is unspecified')
name = 'unknown'
try:
self.cmap = CMapDB.get_cmap(name)
except CMapNotFound as e:
if strict:
raise FontError(e)
self.cmap = CMap()
try:
descriptor = dict_value(spec['FontDescriptor'])
except KeyError:
if strict:
raise FontError('FontDescriptor is missing')
descriptor = {}
ttf = None
if 'FontFile2' in descriptor:
self.fontfile = PDFStream.validated_stream(
descriptor.get('FontFile2'))
ttf = TrueTypeFont(self.basefont,
BytesIO(self.fontfile.get_data()))
self.unicode_map = None
if 'ToUnicode' in spec:
strm = PDFStream.validated_stream(spec['ToUnicode'])
self.unicode_map = FileUnicodeMap()
CMapParser(self.unicode_map, BytesIO(strm.get_data())).run()
elif self.cidcoding in ('Adobe-Identity', 'Adobe-UCS'):
if ttf:
try:
self.unicode_map = ttf.create_unicode_map()
except CMapNotFound:
pass
else:
try:
self.unicode_map = CMapDB.get_unicode_map(
self.cidcoding, self.cmap.is_vertical())
except CMapNotFound as e:
pass
self.vertical = self.cmap.is_vertical()
if self.vertical:
# writing mode: vertical
widths = get_widths2(list_value(spec.get('W2', [])))
self.disps = dict((cid, (vx, vy))
for (cid, (_, (vx, vy))) in iter(widths.items()))
(vy, w) = spec.get('DW2', [880, -1000])
self.default_disp = (None, vy)
widths = dict((cid, w) for (cid, (w, _)) in iter(widths.items()))
default_width = w
else:
# writing mode: horizontal
self.disps = {}
self.default_disp = 0
widths = get_widths(list_value(spec.get('W', [])))
default_width = spec.get('DW', 1000)
PDFFont.__init__(self, descriptor, widths, default_width=default_width)
return
