def buildGlyphHashValue(self,
width,
outlineXML,
glyphName,
useDefaultGlyphDir,
level=0):
"""
glyphData must be the official <outline> XML from a GLIF.
We skip contours with only one point.
"""
dataList = ["w%s" % norm_float(round(width, 9))]
if level > 10:
raise UFOParseError(
"In parsing component, exceeded 10 levels of reference. "
"'%s'. " % (glyphName))
# <outline> tag is optional per spec., e.g. space glyph
# does not necessarily have it.
if outlineXML is not None:
for childContour in outlineXML:
if childContour.tag == "contour":
if len(childContour) < 2:
continue
for child in childContour:
if child.tag == "point":
ptType = child.get("type")
pointType = '' if ptType is None else ptType[0]
x = self._rd_val(child.get("x"))
y = self._rd_val(child.get("y"))
dataList.append("%s%s%s" % (pointType, x, y))
elif childContour.tag == "component":
# append the component hash.
compGlyphName = childContour.get("base")
if compGlyphName is None:
raise UFOParseError(
"'%s' is missing the 'base' attribute in a "
"component." % glyphName)
dataList.append("%s%s" % ("base:", compGlyphName))
if useDefaultGlyphDir:
try:
componentPath = self.getGlyphDefaultPath(
compGlyphName)
except KeyError:
raise UFOParseError(
"'%s' component glyph is missing from "
"contents.plist." % (compGlyphName))
else:
# If we are not necessarily using the default layer
# for the main glyph, then a missing component may not
# have been processed, and may just be in the default
# layer. We need to look for component glyphs in the
# src list first, then in the defualt layer.
try:
componentPath = self.getGlyphSrcPath(compGlyphName)
if not os.path.exists(componentPath):
componentPath = self.getGlyphDefaultPath(
compGlyphName)
except KeyError:
try:
componentPath = self.getGlyphDefaultPath(
compGlyphName)
except KeyError:
raise UFOParseError(
"'%s' component glyph is missing from "
"contents.plist." % (compGlyphName))
if not os.path.exists(componentPath):
raise UFOParseError(
"'%s' component file is missing: '%s'." %
(compGlyphName, componentPath))
etRoot = ET.ElementTree()
# Collect transform values
for trans_key, flbk_val in COMP_TRANSFORM.items():
value = childContour.get(trans_key, flbk_val)
dataList.append(self._rd_val(value))
componentXML = etRoot.parse(componentPath)
componentOutlineXML = componentXML.find("outline")
_, componentDataList = self.buildGlyphHashValue(
width, componentOutlineXML, glyphName,
useDefaultGlyphDir, level + 1)
dataList.extend(componentDataList)
data = "".join(dataList)
if len(data) >= 128:
data = hashlib.sha512(data.encode("ascii")).hexdigest()
return data, dataList
def _rd_val(str_val):
"""Round and normalize a (string) GLIF value"""
return repr(norm_float(round(ast.literal_eval(str_val), 9)))