- added support for composite info
- write attributes in a decent order git-svn-id: svn://svn.code.sf.net/p/fonttools/code/trunk@132 4cde692c-a291-49d1-8350-778aa11640f8
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@ -8,7 +8,7 @@ import re
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import string
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import types
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__version__ = "$Id: afmLib.py,v 1.1 1999-12-16 21:34:51 Just Exp $"
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__version__ = "$Id: afmLib.py,v 1.2 2001-04-30 14:40:17 Just Exp $"
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# every single line starts with a "word"
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@ -18,7 +18,7 @@ identifierRE = re.compile("^([A-Za-z]+).*")
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charRE = re.compile(
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"(-?\d+)" # charnum
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"\s*;\s*WX\s+" # ; WX
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"(\d+)" # width
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"(\d+)" # width
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"\s*;\s*N\s+" # ; N
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"(\.?[A-Za-z0-9_]+)" # charname
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"\s*;\s*B\s+" # ; B
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@ -42,7 +42,46 @@ kernRE = re.compile(
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"\s*" #
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)
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error = "AFM.error"
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# regular expressions to parse composite info lines of the form:
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# Aacute 2 ; PCC A 0 0 ; PCC acute 182 211 ;
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compositeRE = re.compile(
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"([.A-Za-z0-9_]+)" # char name
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"\s+" #
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"(\d+)" # number of parts
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"\s*;\s*" #
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)
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componentRE = re.compile(
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"PCC\s+" # PPC
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"([.A-Za-z0-9_]+)" # base char name
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"\s+" #
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"(-?\d+)" # x offset
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"\s+" #
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"(-?\d+)" # y offset
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"\s*;\s*" #
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)
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preferredAttributeOrder = [
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"FontName",
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"FullName",
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"FamilyName",
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"Weight",
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"ItalicAngle",
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"IsFixedPitch",
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"FontBBox",
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"UnderlinePosition",
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"UnderlineThickness",
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"Version",
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"Notice",
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"EncodingScheme",
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"CapHeight",
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"XHeight",
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"Ascender",
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"Descender",
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]
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class error(Exception): pass
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class AFM:
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@ -53,14 +92,18 @@ class AFM:
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'StartKernData',
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'StartKernPairs',
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'EndKernPairs',
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'EndKernData', ]
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'EndKernData',
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'StartComposites',
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'EndComposites',
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]
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def __init__(self, path = None):
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def __init__(self, path=None):
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self._attrs = {}
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self._chars = {}
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self._kerning = {}
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self._index = {}
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self._comments = []
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self._composites = {}
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if path is not None:
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self.read(path)
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@ -78,10 +121,12 @@ class AFM:
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rest = string.strip(line[pos:])
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if word in self._keywords:
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continue
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if word == 'C':
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if word == "C":
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self.parsechar(rest)
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elif word == "KPX":
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self.parsekernpair(rest)
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elif word == "CC":
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self.parsecomposite(rest)
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else:
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self.parseattr(word, rest)
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@ -122,6 +167,28 @@ class AFM:
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else:
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self._attrs[word] = value
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def parsecomposite(self, rest):
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m = compositeRE.match(rest)
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if m is None:
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raise error, "syntax error in AFM file: " + `rest`
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charname = m.group(1)
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ncomponents = int(m.group(2))
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rest = rest[m.regs[0][1]:]
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components = []
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while 1:
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m = componentRE.match(rest)
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if m is None:
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raise error, "syntax error in AFM file: " + `rest`
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basechar = m.group(1)
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xoffset = int(m.group(2))
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yoffset = int(m.group(3))
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components.append((basechar, xoffset, yoffset))
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rest = rest[m.regs[0][1]:]
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if not rest:
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break
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assert len(components) == ncomponents
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self._composites[charname] = components
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def write(self, path, sep = '\r'):
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import time
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lines = [ "StartFontMetrics 2.0",
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@ -130,12 +197,27 @@ class AFM:
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time.strftime("%m/%d/%Y %H:%M:%S",
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time.localtime(time.time())))]
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# write attributes
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items = self._attrs.items()
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items.sort() # XXX proper ordering???
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# write comments, assuming (possibly wrongly!) they should
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# all appear at the top
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for comment in self._comments:
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lines.append("Comment " + comment)
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# write attributes, first the ones we know about, in
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# a preferred order
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attrs = self._attrs
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for attr in preferredAttributeOrder:
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if attrs.has_key(attr):
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value = attrs[attr]
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if attr == "FontBBox":
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value = "%s %s %s %s" % value
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lines.append(attr + " " + str(value))
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# then write the attributes we don't know about,
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# in alphabetical order
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items = attrs.items()
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items.sort()
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for attr, value in items:
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if attr == "FontBBox":
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value = string.join(map(str, value), " ")
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if attr in preferredAttributeOrder:
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continue
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lines.append(attr + " " + str(value))
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# write char metrics
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@ -166,9 +248,20 @@ class AFM:
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items.sort() # XXX is order important?
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for (leftchar, rightchar), value in items:
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lines.append("KPX %s %s %d" % (leftchar, rightchar, value))
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lines.append("EndKernPairs")
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lines.append("EndKernData")
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if self._composites:
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composites = self._composites.items()
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composites.sort()
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lines.append("StartComposites %s" % len(self._composites))
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for charname, components in composites:
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line = "CC %s %s ;" % (charname, len(components))
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for basechar, xoffset, yoffset in components:
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line = line + " PCC %s %s %s ;" % (basechar, xoffset, yoffset)
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lines.append(line)
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lines.append("EndComposites")
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lines.append("EndFontMetrics")
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writelines(path, lines, sep)
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@ -234,7 +327,7 @@ def readlines(path):
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sep = sep + '\n' # unix or dos
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return string.split(data, sep)
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def writelines(path, lines, sep = '\r'):
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def writelines(path, lines, sep='\r'):
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f = open(path, 'wb')
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for line in lines:
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f.write(line + sep)
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@ -261,5 +354,5 @@ if __name__ == "__main__":
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#print afm.chars()
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#print afm.kernpairs()
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print afm
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afm.write(path + ".xxx")
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afm.write(path + ".muck")
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