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import fontTools.ttLib as ttLib
from fontTools.ttLib.ttVisitor import TTVisitor
from fontTools.misc.textTools import Tag
from array import array
class JsonVisitor(TTVisitor):
def _open(self, s):
print(s, file=self.file)
self._indent += self.indent
self.comma = False
def _close(self, s):
self._indent = self._indent[: -len(self.indent)]
print("\n%s%s" % (self._indent, s), end="", file=self.file)
self.comma = True
def __init__(self, file, indent=" "):
self.file = file
self.indent = indent
self._indent = ""
def visitObject(self, obj):
self._open("{")
super().visitObject(obj)
if self.comma:
print(",", end="", file=self.file)
print(
'\n%s"type": "%s"' % (self._indent, obj.__class__.__name__),
end="",
file=self.file,
)
self._close("}")
def visitAttr(self, obj, attr, value):
if self.comma:
print(",", file=self.file)
print('%s"%s": ' % (self._indent, attr), end="", file=self.file)
self.visit(value)
self.comma = True
def visitList(self, obj, *args, **kwargs):
self._open("[")
comma = False
for value in obj:
if comma:
print(",", end="", file=self.file)
print(file=self.file)
print(self._indent, end="", file=self.file)
self.visit(value, *args, **kwargs)
comma = True
self._close("]")
def visitDict(self, obj, *args, **kwargs):
self._open("{")
comma = False
for key, value in obj.items():
if comma:
print(",", end="", file=self.file)
print(file=self.file)
print('%s"%s": ' % (self._indent, key), end="", file=self.file)
self.visit(value, *args, **kwargs)
comma = True
self._close("}")
def visitLeaf(self, obj):
if isinstance(obj, tuple):
obj = list(obj)
elif isinstance(obj, bytes):
obj = list(obj)
if obj is None:
s = "null"
elif obj is True:
s = "true"
elif obj is False:
s = "false"
else:
s = repr(obj)
if s[0] == "'":
s = '"' + s[1:-1] + '"'
print("%s" % s, end="", file=self.file)
@JsonVisitor.register(ttLib.TTFont)
def visit(self, font):
if hasattr(visitor, "font"):
print("{}", end="", file=self.file)
return False
visitor.font = font
self._open("{")
for tag in font.keys():
if self.comma:
print(",", file=self.file)
print('\n%s"%s": ' % (self._indent, tag), end="", file=self.file)
visitor.visit(font[tag])
self._close("}")
del visitor.font
return False
@JsonVisitor.register(ttLib.GlyphOrder)
def visit(self, obj):
self.visitList(self.font.getGlyphOrder())
return False
@JsonVisitor.register_attr(ttLib.getTableClass("glyf"), "glyphOrder")
def visit(visitor, obj, attr, value):
return False
@JsonVisitor.register(ttLib.getTableModule("glyf").GlyphCoordinates)
def visit(self, obj):
self.visitList(obj)
return False
@JsonVisitor.register(Tag)
def visit(self, obj):
print('"%s"' % str(obj), end="", file=self.file)
return False
@JsonVisitor.register(array)
def visit(self, obj):
self.visitList(obj)
return False
@JsonVisitor.register(bytearray)
def visit(self, obj):
self.visitList(obj)
return False
if __name__ == "__main__":
from fontTools.ttLib import TTFont
import sys
if len(sys.argv) != 2:
print("usage: print-json.py font")
sys.exit()
font = TTFont(sys.argv[1])
visitor = JsonVisitor(sys.stdout)
visitor.visit(font)
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