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pysilfont/src/silfont/scripts/psfbuildcomp.py

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#!/usr/bin/env python3
__doc__ = '''Read Composite Definitions and add glyphs to a UFO font'''
__url__ = 'https://github.com/silnrsi/pysilfont'
__copyright__ = 'Copyright (c) 2015 SIL International (https://www.sil.org)'
__license__ = 'Released under the MIT License (https://opensource.org/licenses/MIT)'
__author__ = 'David Rowe'
try:
xrange
except NameError:
xrange = range
from xml.etree import ElementTree as ET
import re
from silfont.core import execute
import silfont.ufo as ufo
from silfont.comp import CompGlyph
from silfont.etutil import ETWriter
from silfont.util import parsecolors
argspec = [
('ifont',{'help': 'Input UFO'}, {'type': 'infont'}),
('ofont',{'help': 'Output UFO','nargs': '?' }, {'type': 'outfont'}),
('-i','--cdfile',{'help': 'Composite Definitions input file'}, {'type': 'infile', 'def': '_CD.txt'}),
('-l','--log',{'help': 'Log file'}, {'type': 'outfile', 'def': '_CD.log'}),
('-a','--analysis',{'help': 'Analysis only; no output font generated', 'action': 'store_true'},{}),
('-c','--color',{'help': 'Color cells of generated glyphs', 'action': 'store_true'},{}),
('--colors', {'help': 'Color(s) to use when marking generated glyphs'},{}),
('-f','--force',{'help': 'Force overwrite of glyphs having outlines', 'action': 'store_true'},{}),
('-n','--noflatten',{'help': 'Do not flatten component references', 'action': 'store_true'},{}),
('--remove',{'help': 'a regex matching anchor names that should always be removed from composites'},{}),
('--preserve', {'help': 'a regex matching anchor names that, if present in glyphs about to be replace, should not be overwritten'}, {})
]
glyphlist = [] # accessed as global by recursive function addtolist() and main function doit()
def doit(args):
global glyphlist
infont = args.ifont
logger = args.logger
params = infont.outparams
removeRE = re.compile(args.remove) if args.remove else None
preserveRE = re.compile(args.preserve) if args.preserve else None
colors = None
if args.color or args.colors:
colors = args.colors if args.colors else "g_blue,g_purple"
colors = parsecolors(colors, allowspecial=True)
invalid = False
for color in colors:
if color[0] is None:
invalid = True
logger.log(color[2], "E")
if len(colors) > 3:
logger.log("A maximum of three colors can be supplied: " + str(len(colors)) + " supplied", "E")
invalid = True
if invalid: logger.log("Re-run with valid colors", "S")
if len(colors) == 1: colors.append(colors[0])
if len(colors) == 2: colors.append(colors[1])
logstatuses = ("Glyph unchanged", "Glyph changed", "New glyph")
### temp section (these may someday be passed as optional parameters)
RemoveUsedAnchors = True
### end of temp section
cgobj = CompGlyph()
for linenum, rawCDline in enumerate(args.cdfile):
CDline=rawCDline.strip()
if len(CDline) == 0 or CDline[0] == "#": continue
logger.log("Processing line " + str(linenum+1) + ": " + CDline,"I")
cgobj.CDline=CDline
try:
cgobj.parsefromCDline()
except ValueError as mess:
logger.log("Parsing error: " + str(mess), "E")
continue
g = cgobj.CDelement
# Collect target glyph information and construct list of component glyphs
targetglyphname = g.get("PSName")
targetglyphunicode = g.get("UID")
glyphlist = [] # list of component glyphs
lsb = rsb = 0
adv = None
for e in g:
if e.tag == 'note': pass
elif e.tag == 'property': pass # ignore mark info
elif e.tag == 'lsb': lsb = int(e.get('width'))
elif e.tag == 'rsb': rsb = int(e.get('width'))
elif e.tag == 'advance': adv = int(e.get('width'))
elif e.tag == 'base':
addtolist(e,None)
logger.log(str(glyphlist),"V")
# find each component glyph and compute x,y position
xadvance = lsb
componentlist = []
targetglyphanchors = {} # dictionary of {name: (xOffset,yOffset)}
for currglyph, prevglyph, baseAP, diacAP, shiftx, shifty in glyphlist:
# get current glyph and its anchor names from font
if currglyph not in infont.deflayer:
logger.log(currglyph + " not found in font", "E")
continue
cg = infont.deflayer[currglyph]
cganc = [x.element.get('name') for x in cg['anchor']]
diacAPx = diacAPy = 0
baseAPx = baseAPy = 0
if prevglyph is None: # this is new 'base'
xOffset = xadvance
yOffset = 0
# Find advance width of currglyph and add to xadvance
if 'advance' in cg:
cgadvance = cg['advance']
if cgadvance is not None and cgadvance.element.get('width') is not None:
xadvance += int(float(cgadvance.element.get('width')))
else: # this is 'attach'
if diacAP is not None: # find diacritic Attachment Point in currglyph
if diacAP not in cganc:
logger.log("The AP '" + diacAP + "' does not exist on diacritic glyph " + currglyph, "E")
else:
i = cganc.index(diacAP)
diacAPx = int(float(cg['anchor'][i].element.get('x')))
diacAPy = int(float(cg['anchor'][i].element.get('y')))
else:
logger.log("No AP specified for diacritic " + currglyph, "E")
if baseAP is not None: # find base character Attachment Point in targetglyph
if baseAP not in targetglyphanchors.keys():
logger.log("The AP '" + baseAP + "' does not exist on base glyph when building " + targetglyphname, "E")
else:
baseAPx = targetglyphanchors[baseAP][0]
baseAPy = targetglyphanchors[baseAP][1]
if RemoveUsedAnchors:
logger.log("Removing used anchor " + baseAP, "V")
del targetglyphanchors[baseAP]
xOffset = baseAPx - diacAPx
yOffset = baseAPy - diacAPy
if shiftx is not None: xOffset += int(shiftx)
if shifty is not None: yOffset += int(shifty)
componentdic = {'base': currglyph}
if xOffset != 0: componentdic['xOffset'] = str(xOffset)
if yOffset != 0: componentdic['yOffset'] = str(yOffset)
componentlist.append( componentdic )
# Move anchor information to targetglyphanchors
for a in cg['anchor']:
dic = a.element.attrib
thisanchorname = dic['name']
if RemoveUsedAnchors and thisanchorname == diacAP:
logger.log("Skipping used anchor " + diacAP, "V")
continue # skip this anchor
# add anchor (adjusted for position in targetglyph)
targetglyphanchors[thisanchorname] = ( int( dic['x'] ) + xOffset, int( dic['y'] ) + yOffset )
logger.log("Adding anchor " + thisanchorname + ": " + str(targetglyphanchors[thisanchorname]), "V")
logger.log(str(targetglyphanchors),"V")
if adv is not None:
xadvance = adv ### if adv specified, then this advance value overrides calculated value
else:
xadvance += rsb ### adjust with rsb
logger.log("Glyph: " + targetglyphname + ", " + str(targetglyphunicode) + ", " + str(xadvance), "V")
for c in componentlist:
logger.log(str(c), "V")
# Flatten components unless -n set
if not args.noflatten:
newcomponentlist = []
for compdic in componentlist:
c = compdic['base']
x = compdic.get('xOffset')
y = compdic.get('yOffset')
# look up component glyph
g=infont.deflayer[c]
# check if it has only components (that is, no contours) in outline
if g['outline'] and g['outline'].components and not g['outline'].contours:
# for each component, get base, x1, y1 and create new entry with base, x+x1, y+y1
for subcomp in g['outline'].components:
componentdic = subcomp.element.attrib.copy()
x1 = componentdic.pop('xOffset', 0)
y1 = componentdic.pop('yOffset', 0)
xOffset = addtwo(x, x1)
yOffset = addtwo(y, y1)
if xOffset != 0: componentdic['xOffset'] = str(xOffset)
if yOffset != 0: componentdic['yOffset'] = str(yOffset)
newcomponentlist.append( componentdic )
else:
newcomponentlist.append( compdic )
if componentlist == newcomponentlist:
logger.log("No changes to flatten components", "V")
else:
componentlist = newcomponentlist
logger.log("Components flattened", "V")
for c in componentlist:
logger.log(str(c), "V")
# Check if this new glyph exists in the font already; if so, decide whether to replace, or issue warning
preservedAPs = set()
if targetglyphname in infont.deflayer.keys():
logger.log("Target glyph, " + targetglyphname + ", already exists in font.", "V")
targetglyph = infont.deflayer[targetglyphname]
if targetglyph['outline'] and targetglyph['outline'].contours and not args.force: # don't replace glyph with contours, unless -f set
logger.log("Not replacing existing glyph, " + targetglyphname + ", because it has contours.", "W")
continue
else:
logger.log("Replacing information in existing glyph, " + targetglyphname, "I")
glyphstatus = "Replace"
# delete information from existing glyph
targetglyph.remove('outline')
targetglyph.remove('advance')
for i in xrange(len(targetglyph['anchor'])-1,-1,-1):
aname = targetglyph['anchor'][i].element.attrib['name']
if preserveRE is not None and preserveRE.match(aname):
preservedAPs.add(aname)
logger.log("Preserving anchor " + aname, "V")
else:
targetglyph.remove('anchor',index=i)
else:
logger.log("Adding new glyph, " + targetglyphname, "I")
glyphstatus = "New"
# create glyph, using targetglyphname, targetglyphunicode
targetglyph = ufo.Uglif(layer=infont.deflayer, name=targetglyphname)
# actually add the glyph to the font
infont.deflayer.addGlyph(targetglyph)
if xadvance != 0: targetglyph.add('advance',{'width': str(xadvance)} )
if targetglyphunicode: # remove any existing unicode value(s) before adding unicode value
for i in xrange(len(targetglyph['unicode'])-1,-1,-1):
targetglyph.remove('unicode',index=i)
targetglyph.add('unicode',{'hex': targetglyphunicode} )
targetglyph.add('outline')
# to the outline element, add a component element for every entry in componentlist
for compdic in componentlist:
comp = ufo.Ucomponent(targetglyph['outline'],ET.Element('component',compdic))
targetglyph['outline'].appendobject(comp,'component')
# copy anchors to new glyph from targetglyphanchors which has format {'U': (500,1000), 'L': (500,0)}
for a in sorted(targetglyphanchors):
if removeRE is not None and removeRE.match(a):
logger.log("Skipping unwanted anchor " + a, "V")
continue # skip this anchor
if a not in preservedAPs:
targetglyph.add('anchor', {'name': a, 'x': str(targetglyphanchors[a][0]), 'y': str(targetglyphanchors[a][1])} )
# mark glyphs as being generated by setting cell mark color if -c or --colors set
if colors:
# Need to see if the target glyph has changed.
if glyphstatus == "Replace":
# Need to recreate the xml element then normalize it for comparison with original
targetglyph["anchor"].sort(key=lambda anchor: anchor.element.get("name"))
targetglyph.rebuildET()
attribOrder = params['attribOrders']['glif'] if 'glif' in params['attribOrders'] else {}
if params["sortDicts"] or params["precision"] is not None: ufo.normETdata(targetglyph.etree, params, 'glif')
etw = ETWriter(targetglyph.etree, attributeOrder=attribOrder, indentIncr=params["indentIncr"],
indentFirst=params["indentFirst"], indentML=params["indentML"], precision=params["precision"],
floatAttribs=params["floatAttribs"], intAttribs=params["intAttribs"])
newxml = etw.serialize_xml()
if newxml == targetglyph.inxmlstr: glyphstatus = 'Unchanged'
x = 0 if glyphstatus == "Unchanged" else 1 if glyphstatus == "Replace" else 2
color = colors[x]
lib = targetglyph["lib"]
if color[0]: # Need to set actual color
if lib is None: targetglyph.add("lib")
targetglyph["lib"].setval("public.markColor", "string", color[0])
logger.log(logstatuses[x] + " - setting markColor to " + color[2], "I")
elif x < 2: # No need to log for new glyphs
if color[1] == "none": # Remove existing color
if lib is not None and "public.markColor" in lib: lib.remove("public.markColor")
logger.log(logstatuses[x] + " - Removing existing markColor", "I")
else:
logger.log(logstatuses[x] + " - Leaving existing markColor (if any)", "I")
# If analysis only, return without writing output font
if args.analysis: return
# Return changed font and let execute() write it out
return infont
def addtolist(e, prevglyph):
"""Given an element ('base' or 'attach') and the name of previous glyph,
add a tuple to the list of glyphs in this composite, including
"at" and "with" attachment point information, and x and y shift values
"""
global glyphlist
subelementlist = []
thisglyphname = e.get('PSName')
atvalue = e.get("at")
withvalue = e.get("with")
shiftx = shifty = None
for se in e:
if se.tag == 'property': pass
elif se.tag == 'shift':
shiftx = se.get('x')
shifty = se.get('y')
elif se.tag == 'attach':
subelementlist.append( se )
glyphlist.append( ( thisglyphname, prevglyph, atvalue, withvalue, shiftx, shifty ) )
for se in subelementlist:
addtolist(se, thisglyphname)
def addtwo(a1, a2):
"""Take two items (string, number or None), convert to integer and return sum"""
b1 = int(a1) if a1 is not None else 0
b2 = int(a2) if a2 is not None else 0
return b1 + b2
def cmd() : execute("UFO",doit,argspec)
if __name__ == "__main__": cmd()