573 lines
15 KiB
Python
573 lines
15 KiB
Python
|
_accessstrings = {0: "", 1: "readonly", 2: "executeonly", 3: "noaccess"}
|
||
|
|
|
||
|
|
|
||
|
|
class ps_object(object):
|
||
|
|
literal = 1
|
||
|
|
access = 0
|
||
|
|
value = None
|
||
|
|
|
||
|
|
def __init__(self, value):
|
||
|
|
self.value = value
|
||
|
|
self.type = self.__class__.__name__[3:] + "type"
|
||
|
|
|
||
|
|
def __repr__(self):
|
||
|
|
return "<%s %s>" % (self.__class__.__name__[3:], repr(self.value))
|
||
|
|
|
||
|
|
|
||
|
|
class ps_operator(ps_object):
|
||
|
|
literal = 0
|
||
|
|
|
||
|
|
def __init__(self, name, function):
|
||
|
|
self.name = name
|
||
|
|
self.function = function
|
||
|
|
self.type = self.__class__.__name__[3:] + "type"
|
||
|
|
|
||
|
|
def __repr__(self):
|
||
|
|
return "<operator %s>" % self.name
|
||
|
|
|
||
|
|
|
||
|
|
class ps_procedure(ps_object):
|
||
|
|
literal = 0
|
||
|
|
|
||
|
|
def __repr__(self):
|
||
|
|
return "<procedure>"
|
||
|
|
|
||
|
|
def __str__(self):
|
||
|
|
psstring = "{"
|
||
|
|
for i in range(len(self.value)):
|
||
|
|
if i:
|
||
|
|
psstring = psstring + " " + str(self.value[i])
|
||
|
|
else:
|
||
|
|
psstring = psstring + str(self.value[i])
|
||
|
|
return psstring + "}"
|
||
|
|
|
||
|
|
|
||
|
|
class ps_name(ps_object):
|
||
|
|
literal = 0
|
||
|
|
|
||
|
|
def __str__(self):
|
||
|
|
if self.literal:
|
||
|
|
return "/" + self.value
|
||
|
|
else:
|
||
|
|
return self.value
|
||
|
|
|
||
|
|
|
||
|
|
class ps_literal(ps_object):
|
||
|
|
def __str__(self):
|
||
|
|
return "/" + self.value
|
||
|
|
|
||
|
|
|
||
|
|
class ps_array(ps_object):
|
||
|
|
def __str__(self):
|
||
|
|
psstring = "["
|
||
|
|
for i in range(len(self.value)):
|
||
|
|
item = self.value[i]
|
||
|
|
access = _accessstrings[item.access]
|
||
|
|
if access:
|
||
|
|
access = " " + access
|
||
|
|
if i:
|
||
|
|
psstring = psstring + " " + str(item) + access
|
||
|
|
else:
|
||
|
|
psstring = psstring + str(item) + access
|
||
|
|
return psstring + "]"
|
||
|
|
|
||
|
|
def __repr__(self):
|
||
|
|
return "<array>"
|
||
|
|
|
||
|
|
|
||
|
|
_type1_pre_eexec_order = [
|
||
|
|
"FontInfo",
|
||
|
|
"FontName",
|
||
|
|
"Encoding",
|
||
|
|
"PaintType",
|
||
|
|
"FontType",
|
||
|
|
"FontMatrix",
|
||
|
|
"FontBBox",
|
||
|
|
"UniqueID",
|
||
|
|
"Metrics",
|
||
|
|
"StrokeWidth",
|
||
|
|
]
|
||
|
|
|
||
|
|
_type1_fontinfo_order = [
|
||
|
|
"version",
|
||
|
|
"Notice",
|
||
|
|
"FullName",
|
||
|
|
"FamilyName",
|
||
|
|
"Weight",
|
||
|
|
"ItalicAngle",
|
||
|
|
"isFixedPitch",
|
||
|
|
"UnderlinePosition",
|
||
|
|
"UnderlineThickness",
|
||
|
|
]
|
||
|
|
|
||
|
|
_type1_post_eexec_order = ["Private", "CharStrings", "FID"]
|
||
|
|
|
||
|
|
|
||
|
|
def _type1_item_repr(key, value):
|
||
|
|
psstring = ""
|
||
|
|
access = _accessstrings[value.access]
|
||
|
|
if access:
|
||
|
|
access = access + " "
|
||
|
|
if key == "CharStrings":
|
||
|
|
psstring = psstring + "/%s %s def\n" % (
|
||
|
|
key,
|
||
|
|
_type1_CharString_repr(value.value),
|
||
|
|
)
|
||
|
|
elif key == "Encoding":
|
||
|
|
psstring = psstring + _type1_Encoding_repr(value, access)
|
||
|
|
else:
|
||
|
|
psstring = psstring + "/%s %s %sdef\n" % (str(key), str(value), access)
|
||
|
|
return psstring
|
||
|
|
|
||
|
|
|
||
|
|
def _type1_Encoding_repr(encoding, access):
|
||
|
|
encoding = encoding.value
|
||
|
|
psstring = "/Encoding 256 array\n0 1 255 {1 index exch /.notdef put} for\n"
|
||
|
|
for i in range(256):
|
||
|
|
name = encoding[i].value
|
||
|
|
if name != ".notdef":
|
||
|
|
psstring = psstring + "dup %d /%s put\n" % (i, name)
|
||
|
|
return psstring + access + "def\n"
|
||
|
|
|
||
|
|
|
||
|
|
def _type1_CharString_repr(charstrings):
|
||
|
|
items = sorted(charstrings.items())
|
||
|
|
return "xxx"
|
||
|
|
|
||
|
|
|
||
|
|
class ps_font(ps_object):
|
||
|
|
def __str__(self):
|
||
|
|
psstring = "%d dict dup begin\n" % len(self.value)
|
||
|
|
for key in _type1_pre_eexec_order:
|
||
|
|
try:
|
||
|
|
value = self.value[key]
|
||
|
|
except KeyError:
|
||
|
|
pass
|
||
|
|
else:
|
||
|
|
psstring = psstring + _type1_item_repr(key, value)
|
||
|
|
items = sorted(self.value.items())
|
||
|
|
for key, value in items:
|
||
|
|
if key not in _type1_pre_eexec_order + _type1_post_eexec_order:
|
||
|
|
psstring = psstring + _type1_item_repr(key, value)
|
||
|
|
psstring = psstring + "currentdict end\ncurrentfile eexec\ndup "
|
||
|
|
for key in _type1_post_eexec_order:
|
||
|
|
try:
|
||
|
|
value = self.value[key]
|
||
|
|
except KeyError:
|
||
|
|
pass
|
||
|
|
else:
|
||
|
|
psstring = psstring + _type1_item_repr(key, value)
|
||
|
|
return (
|
||
|
|
psstring
|
||
|
|
+ "dup/FontName get exch definefont pop\nmark currentfile closefile\n"
|
||
|
|
+ 8 * (64 * "0" + "\n")
|
||
|
|
+ "cleartomark"
|
||
|
|
+ "\n"
|
||
|
|
)
|
||
|
|
|
||
|
|
def __repr__(self):
|
||
|
|
return "<font>"
|
||
|
|
|
||
|
|
|
||
|
|
class ps_file(ps_object):
|
||
|
|
pass
|
||
|
|
|
||
|
|
|
||
|
|
class ps_dict(ps_object):
|
||
|
|
def __str__(self):
|
||
|
|
psstring = "%d dict dup begin\n" % len(self.value)
|
||
|
|
items = sorted(self.value.items())
|
||
|
|
for key, value in items:
|
||
|
|
access = _accessstrings[value.access]
|
||
|
|
if access:
|
||
|
|
access = access + " "
|
||
|
|
psstring = psstring + "/%s %s %sdef\n" % (str(key), str(value), access)
|
||
|
|
return psstring + "end "
|
||
|
|
|
||
|
|
def __repr__(self):
|
||
|
|
return "<dict>"
|
||
|
|
|
||
|
|
|
||
|
|
class ps_mark(ps_object):
|
||
|
|
def __init__(self):
|
||
|
|
self.value = "mark"
|
||
|
|
self.type = self.__class__.__name__[3:] + "type"
|
||
|
|
|
||
|
|
|
||
|
|
class ps_procmark(ps_object):
|
||
|
|
def __init__(self):
|
||
|
|
self.value = "procmark"
|
||
|
|
self.type = self.__class__.__name__[3:] + "type"
|
||
|
|
|
||
|
|
|
||
|
|
class ps_null(ps_object):
|
||
|
|
def __init__(self):
|
||
|
|
self.type = self.__class__.__name__[3:] + "type"
|
||
|
|
|
||
|
|
|
||
|
|
class ps_boolean(ps_object):
|
||
|
|
def __str__(self):
|
||
|
|
if self.value:
|
||
|
|
return "true"
|
||
|
|
else:
|
||
|
|
return "false"
|
||
|
|
|
||
|
|
|
||
|
|
class ps_string(ps_object):
|
||
|
|
def __str__(self):
|
||
|
|
return "(%s)" % repr(self.value)[1:-1]
|
||
|
|
|
||
|
|
|
||
|
|
class ps_integer(ps_object):
|
||
|
|
def __str__(self):
|
||
|
|
return repr(self.value)
|
||
|
|
|
||
|
|
|
||
|
|
class ps_real(ps_object):
|
||
|
|
def __str__(self):
|
||
|
|
return repr(self.value)
|
||
|
|
|
||
|
|
|
||
|
|
class PSOperators(object):
|
||
|
|
def ps_def(self):
|
||
|
|
obj = self.pop()
|
||
|
|
name = self.pop()
|
||
|
|
self.dictstack[-1][name.value] = obj
|
||
|
|
|
||
|
|
def ps_bind(self):
|
||
|
|
proc = self.pop("proceduretype")
|
||
|
|
self.proc_bind(proc)
|
||
|
|
self.push(proc)
|
||
|
|
|
||
|
|
def proc_bind(self, proc):
|
||
|
|
for i in range(len(proc.value)):
|
||
|
|
item = proc.value[i]
|
||
|
|
if item.type == "proceduretype":
|
||
|
|
self.proc_bind(item)
|
||
|
|
else:
|
||
|
|
if not item.literal:
|
||
|
|
try:
|
||
|
|
obj = self.resolve_name(item.value)
|
||
|
|
except:
|
||
|
|
pass
|
||
|
|
else:
|
||
|
|
if obj.type == "operatortype":
|
||
|
|
proc.value[i] = obj
|
||
|
|
|
||
|
|
def ps_exch(self):
|
||
|
|
if len(self.stack) < 2:
|
||
|
|
raise RuntimeError("stack underflow")
|
||
|
|
obj1 = self.pop()
|
||
|
|
obj2 = self.pop()
|
||
|
|
self.push(obj1)
|
||
|
|
self.push(obj2)
|
||
|
|
|
||
|
|
def ps_dup(self):
|
||
|
|
if not self.stack:
|
||
|
|
raise RuntimeError("stack underflow")
|
||
|
|
self.push(self.stack[-1])
|
||
|
|
|
||
|
|
def ps_exec(self):
|
||
|
|
obj = self.pop()
|
||
|
|
if obj.type == "proceduretype":
|
||
|
|
self.call_procedure(obj)
|
||
|
|
else:
|
||
|
|
self.handle_object(obj)
|
||
|
|
|
||
|
|
def ps_count(self):
|
||
|
|
self.push(ps_integer(len(self.stack)))
|
||
|
|
|
||
|
|
def ps_eq(self):
|
||
|
|
any1 = self.pop()
|
||
|
|
any2 = self.pop()
|
||
|
|
self.push(ps_boolean(any1.value == any2.value))
|
||
|
|
|
||
|
|
def ps_ne(self):
|
||
|
|
any1 = self.pop()
|
||
|
|
any2 = self.pop()
|
||
|
|
self.push(ps_boolean(any1.value != any2.value))
|
||
|
|
|
||
|
|
def ps_cvx(self):
|
||
|
|
obj = self.pop()
|
||
|
|
obj.literal = 0
|
||
|
|
self.push(obj)
|
||
|
|
|
||
|
|
def ps_matrix(self):
|
||
|
|
matrix = [
|
||
|
|
ps_real(1.0),
|
||
|
|
ps_integer(0),
|
||
|
|
ps_integer(0),
|
||
|
|
ps_real(1.0),
|
||
|
|
ps_integer(0),
|
||
|
|
ps_integer(0),
|
||
|
|
]
|
||
|
|
self.push(ps_array(matrix))
|
||
|
|
|
||
|
|
def ps_string(self):
|
||
|
|
num = self.pop("integertype").value
|
||
|
|
self.push(ps_string("\0" * num))
|
||
|
|
|
||
|
|
def ps_type(self):
|
||
|
|
obj = self.pop()
|
||
|
|
self.push(ps_string(obj.type))
|
||
|
|
|
||
|
|
def ps_store(self):
|
||
|
|
value = self.pop()
|
||
|
|
key = self.pop()
|
||
|
|
name = key.value
|
||
|
|
for i in range(len(self.dictstack) - 1, -1, -1):
|
||
|
|
if name in self.dictstack[i]:
|
||
|
|
self.dictstack[i][name] = value
|
||
|
|
break
|
||
|
|
self.dictstack[-1][name] = value
|
||
|
|
|
||
|
|
def ps_where(self):
|
||
|
|
name = self.pop()
|
||
|
|
# XXX
|
||
|
|
self.push(ps_boolean(0))
|
||
|
|
|
||
|
|
def ps_systemdict(self):
|
||
|
|
self.push(ps_dict(self.dictstack[0]))
|
||
|
|
|
||
|
|
def ps_userdict(self):
|
||
|
|
self.push(ps_dict(self.dictstack[1]))
|
||
|
|
|
||
|
|
def ps_currentdict(self):
|
||
|
|
self.push(ps_dict(self.dictstack[-1]))
|
||
|
|
|
||
|
|
def ps_currentfile(self):
|
||
|
|
self.push(ps_file(self.tokenizer))
|
||
|
|
|
||
|
|
def ps_eexec(self):
|
||
|
|
f = self.pop("filetype").value
|
||
|
|
f.starteexec()
|
||
|
|
|
||
|
|
def ps_closefile(self):
|
||
|
|
f = self.pop("filetype").value
|
||
|
|
f.skipwhite()
|
||
|
|
f.stopeexec()
|
||
|
|
|
||
|
|
def ps_cleartomark(self):
|
||
|
|
obj = self.pop()
|
||
|
|
while obj != self.mark:
|
||
|
|
obj = self.pop()
|
||
|
|
|
||
|
|
def ps_readstring(self, ps_boolean=ps_boolean, len=len):
|
||
|
|
s = self.pop("stringtype")
|
||
|
|
oldstr = s.value
|
||
|
|
f = self.pop("filetype")
|
||
|
|
# pad = file.value.read(1)
|
||
|
|
# for StringIO, this is faster
|
||
|
|
f.value.pos = f.value.pos + 1
|
||
|
|
newstr = f.value.read(len(oldstr))
|
||
|
|
s.value = newstr
|
||
|
|
self.push(s)
|
||
|
|
self.push(ps_boolean(len(oldstr) == len(newstr)))
|
||
|
|
|
||
|
|
def ps_known(self):
|
||
|
|
key = self.pop()
|
||
|
|
d = self.pop("dicttype", "fonttype")
|
||
|
|
self.push(ps_boolean(key.value in d.value))
|
||
|
|
|
||
|
|
def ps_if(self):
|
||
|
|
proc = self.pop("proceduretype")
|
||
|
|
if self.pop("booleantype").value:
|
||
|
|
self.call_procedure(proc)
|
||
|
|
|
||
|
|
def ps_ifelse(self):
|
||
|
|
proc2 = self.pop("proceduretype")
|
||
|
|
proc1 = self.pop("proceduretype")
|
||
|
|
if self.pop("booleantype").value:
|
||
|
|
self.call_procedure(proc1)
|
||
|
|
else:
|
||
|
|
self.call_procedure(proc2)
|
||
|
|
|
||
|
|
def ps_readonly(self):
|
||
|
|
obj = self.pop()
|
||
|
|
if obj.access < 1:
|
||
|
|
obj.access = 1
|
||
|
|
self.push(obj)
|
||
|
|
|
||
|
|
def ps_executeonly(self):
|
||
|
|
obj = self.pop()
|
||
|
|
if obj.access < 2:
|
||
|
|
obj.access = 2
|
||
|
|
self.push(obj)
|
||
|
|
|
||
|
|
def ps_noaccess(self):
|
||
|
|
obj = self.pop()
|
||
|
|
if obj.access < 3:
|
||
|
|
obj.access = 3
|
||
|
|
self.push(obj)
|
||
|
|
|
||
|
|
def ps_not(self):
|
||
|
|
obj = self.pop("booleantype", "integertype")
|
||
|
|
if obj.type == "booleantype":
|
||
|
|
self.push(ps_boolean(not obj.value))
|
||
|
|
else:
|
||
|
|
self.push(ps_integer(~obj.value))
|
||
|
|
|
||
|
|
def ps_print(self):
|
||
|
|
str = self.pop("stringtype")
|
||
|
|
print("PS output --->", str.value)
|
||
|
|
|
||
|
|
def ps_anchorsearch(self):
|
||
|
|
seek = self.pop("stringtype")
|
||
|
|
s = self.pop("stringtype")
|
||
|
|
seeklen = len(seek.value)
|
||
|
|
if s.value[:seeklen] == seek.value:
|
||
|
|
self.push(ps_string(s.value[seeklen:]))
|
||
|
|
self.push(seek)
|
||
|
|
self.push(ps_boolean(1))
|
||
|
|
else:
|
||
|
|
self.push(s)
|
||
|
|
self.push(ps_boolean(0))
|
||
|
|
|
||
|
|
def ps_array(self):
|
||
|
|
num = self.pop("integertype")
|
||
|
|
array = ps_array([None] * num.value)
|
||
|
|
self.push(array)
|
||
|
|
|
||
|
|
def ps_astore(self):
|
||
|
|
array = self.pop("arraytype")
|
||
|
|
for i in range(len(array.value) - 1, -1, -1):
|
||
|
|
array.value[i] = self.pop()
|
||
|
|
self.push(array)
|
||
|
|
|
||
|
|
def ps_load(self):
|
||
|
|
name = self.pop()
|
||
|
|
self.push(self.resolve_name(name.value))
|
||
|
|
|
||
|
|
def ps_put(self):
|
||
|
|
obj1 = self.pop()
|
||
|
|
obj2 = self.pop()
|
||
|
|
obj3 = self.pop("arraytype", "dicttype", "stringtype", "proceduretype")
|
||
|
|
tp = obj3.type
|
||
|
|
if tp == "arraytype" or tp == "proceduretype":
|
||
|
|
obj3.value[obj2.value] = obj1
|
||
|
|
elif tp == "dicttype":
|
||
|
|
obj3.value[obj2.value] = obj1
|
||
|
|
elif tp == "stringtype":
|
||
|
|
index = obj2.value
|
||
|
|
obj3.value = obj3.value[:index] + chr(obj1.value) + obj3.value[index + 1 :]
|
||
|
|
|
||
|
|
def ps_get(self):
|
||
|
|
obj1 = self.pop()
|
||
|
|
if obj1.value == "Encoding":
|
||
|
|
pass
|
||
|
|
obj2 = self.pop(
|
||
|
|
"arraytype", "dicttype", "stringtype", "proceduretype", "fonttype"
|
||
|
|
)
|
||
|
|
tp = obj2.type
|
||
|
|
if tp in ("arraytype", "proceduretype"):
|
||
|
|
self.push(obj2.value[obj1.value])
|
||
|
|
elif tp in ("dicttype", "fonttype"):
|
||
|
|
self.push(obj2.value[obj1.value])
|
||
|
|
elif tp == "stringtype":
|
||
|
|
self.push(ps_integer(ord(obj2.value[obj1.value])))
|
||
|
|
else:
|
||
|
|
assert False, "shouldn't get here"
|
||
|
|
|
||
|
|
def ps_getinterval(self):
|
||
|
|
obj1 = self.pop("integertype")
|
||
|
|
obj2 = self.pop("integertype")
|
||
|
|
obj3 = self.pop("arraytype", "stringtype")
|
||
|
|
tp = obj3.type
|
||
|
|
if tp == "arraytype":
|
||
|
|
self.push(ps_array(obj3.value[obj2.value : obj2.value + obj1.value]))
|
||
|
|
elif tp == "stringtype":
|
||
|
|
self.push(ps_string(obj3.value[obj2.value : obj2.value + obj1.value]))
|
||
|
|
|
||
|
|
def ps_putinterval(self):
|
||
|
|
obj1 = self.pop("arraytype", "stringtype")
|
||
|
|
obj2 = self.pop("integertype")
|
||
|
|
obj3 = self.pop("arraytype", "stringtype")
|
||
|
|
tp = obj3.type
|
||
|
|
if tp == "arraytype":
|
||
|
|
obj3.value[obj2.value : obj2.value + len(obj1.value)] = obj1.value
|
||
|
|
elif tp == "stringtype":
|
||
|
|
newstr = obj3.value[: obj2.value]
|
||
|
|
newstr = newstr + obj1.value
|
||
|
|
newstr = newstr + obj3.value[obj2.value + len(obj1.value) :]
|
||
|
|
obj3.value = newstr
|
||
|
|
|
||
|
|
def ps_cvn(self):
|
||
|
|
self.push(ps_name(self.pop("stringtype").value))
|
||
|
|
|
||
|
|
def ps_index(self):
|
||
|
|
n = self.pop("integertype").value
|
||
|
|
if n < 0:
|
||
|
|
raise RuntimeError("index may not be negative")
|
||
|
|
self.push(self.stack[-1 - n])
|
||
|
|
|
||
|
|
def ps_for(self):
|
||
|
|
proc = self.pop("proceduretype")
|
||
|
|
limit = self.pop("integertype", "realtype").value
|
||
|
|
increment = self.pop("integertype", "realtype").value
|
||
|
|
i = self.pop("integertype", "realtype").value
|
||
|
|
while 1:
|
||
|
|
if increment > 0:
|
||
|
|
if i > limit:
|
||
|
|
break
|
||
|
|
else:
|
||
|
|
if i < limit:
|
||
|
|
break
|
||
|
|
if type(i) == type(0.0):
|
||
|
|
self.push(ps_real(i))
|
||
|
|
else:
|
||
|
|
self.push(ps_integer(i))
|
||
|
|
self.call_procedure(proc)
|
||
|
|
i = i + increment
|
||
|
|
|
||
|
|
def ps_forall(self):
|
||
|
|
proc = self.pop("proceduretype")
|
||
|
|
obj = self.pop("arraytype", "stringtype", "dicttype")
|
||
|
|
tp = obj.type
|
||
|
|
if tp == "arraytype":
|
||
|
|
for item in obj.value:
|
||
|
|
self.push(item)
|
||
|
|
self.call_procedure(proc)
|
||
|
|
elif tp == "stringtype":
|
||
|
|
for item in obj.value:
|
||
|
|
self.push(ps_integer(ord(item)))
|
||
|
|
self.call_procedure(proc)
|
||
|
|
elif tp == "dicttype":
|
||
|
|
for key, value in obj.value.items():
|
||
|
|
self.push(ps_name(key))
|
||
|
|
self.push(value)
|
||
|
|
self.call_procedure(proc)
|
||
|
|
|
||
|
|
def ps_definefont(self):
|
||
|
|
font = self.pop("dicttype")
|
||
|
|
name = self.pop()
|
||
|
|
font = ps_font(font.value)
|
||
|
|
self.dictstack[0]["FontDirectory"].value[name.value] = font
|
||
|
|
self.push(font)
|
||
|
|
|
||
|
|
def ps_findfont(self):
|
||
|
|
name = self.pop()
|
||
|
|
font = self.dictstack[0]["FontDirectory"].value[name.value]
|
||
|
|
self.push(font)
|
||
|
|
|
||
|
|
def ps_pop(self):
|
||
|
|
self.pop()
|
||
|
|
|
||
|
|
def ps_dict(self):
|
||
|
|
self.pop("integertype")
|
||
|
|
self.push(ps_dict({}))
|
||
|
|
|
||
|
|
def ps_begin(self):
|
||
|
|
self.dictstack.append(self.pop("dicttype").value)
|
||
|
|
|
||
|
|
def ps_end(self):
|
||
|
|
if len(self.dictstack) > 2:
|
||
|
|
del self.dictstack[-1]
|
||
|
|
else:
|
||
|
|
raise RuntimeError("dictstack underflow")
|
||
|
|
|
||
|
|
|
||
|
|
notdef = ".notdef"
|
||
|
|
from fontTools.encodings.StandardEncoding import StandardEncoding
|
||
|
|
|
||
|
|
ps_StandardEncoding = list(map(ps_name, StandardEncoding))
|