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pysilfont/examples/psfgenftml.py

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Adding upstream version 1.8.0. Signed-off-by: Daniel Baumann <daniel@debian.org>
2025-02-10 05:17:32 +01:00
#!/usr/bin/env python3
'''
Example script to generate ftml document from glyph_data.csv and UFO.
To try this with the Harmattan font project:
1) clone and build Harmattan:
clone https://github.com/silnrsi/font-harmattan
cd font-harmattan
smith configure
smith build ftml
2) run psfgenftml as follows:
python3 psfgenftml.py \
-t "AllChars" \
--ap "_?dia[AB]$" \
--xsl ../tools/lib/ftml.xsl \
--scale 200 \
-i source/glyph_data.csv \
-s "url(../references/Harmattan-Regular-v1.ttf)=ver 1" \
-s "url(../results/Harmattan-Regular.ttf)=Reg-GR" \
-s "url(../results/tests/ftml/fonts/Harmattan-Regular_ot_arab.ttf)=Reg-OT" \
source/Harmattan-Regular.ufo tests/AllChars-dev.ftml
3) launch resulting output file, tests/AllChars-dev.ftml, in a browser.
(see https://silnrsi.github.io/FDBP/en-US/Browsers%20as%20a%20font%20test%20platform.html)
NB: Using Firefox will allow simultaneous display of both Graphite and OpenType rendering
4) As above but substitute:
-t "Diac Test" for the -t parameter
tests/DiacTest-dev.ftml for the final parameter
and launch tests/DiacTest-dev.ftml in a browser.
'''
__url__ = 'https://github.com/silnrsi/pysilfont'
__copyright__ = 'Copyright (c) 2018,2021 SIL International (https://www.sil.org)'
__license__ = 'Released under the MIT License (https://opensource.org/licenses/MIT)'
__author__ = 'Bob Hallissy'
import re
from silfont.core import execute
import silfont.ftml_builder as FB
argspec = [
('ifont', {'help': 'Input UFO'}, {'type': 'infont'}),
('output', {'help': 'Output file ftml in XML format', 'nargs': '?'}, {'type': 'outfile', 'def': '_out.ftml'}),
('-i','--input', {'help': 'Glyph info csv file'}, {'type': 'incsv', 'def': 'glyph_data.csv'}),
('-f','--fontcode', {'help': 'letter to filter for glyph_data'},{}),
('-l','--log', {'help': 'Set log file name'}, {'type': 'outfile', 'def': '_ftml.log'}),
('--langs', {'help':'List of bcp47 language tags', 'default': None}, {}),
('--rtl', {'help': 'enable right-to-left features', 'action': 'store_true'}, {}),
('--norendercheck', {'help': 'do not include the RenderingUnknown check', 'action': 'store_true'}, {}),
('-t', '--test', {'help': 'name of the test to generate', 'default': None}, {}),
('-s','--fontsrc', {'help': 'font source: "url()" or "local()" optionally followed by "=label"', 'action': 'append'}, {}),
('--scale', {'help': 'percentage to scale rendered text (default 100)'}, {}),
('--ap', {'help': 'regular expression describing APs to examine', 'default': '.'}, {}),
('-w', '--width', {'help': 'total width of all <string> column (default automatic)'}, {}),
('--xsl', {'help': 'XSL stylesheet to use'}, {}),
]
def doit(args):
logger = args.logger
# Read input csv
builder = FB.FTMLBuilder(logger, incsv=args.input, fontcode=args.fontcode, font=args.ifont, ap=args.ap,
rtlenable=True, langs=args.langs)
# Override default base (25CC) for displaying combining marks:
builder.diacBase = 0x0628 # beh
# Initialize FTML document:
# Default name for test: AllChars or something based on the csvdata file:
test = args.test or 'AllChars (NG)'
widths = None
if args.width:
try:
width, units = re.match(r'(\d+)(.*)$', args.width).groups()
if len(args.fontsrc):
width = int(round(int(width)/len(args.fontsrc)))
widths = {'string': f'{width}{units}'}
logger.log(f'width: {args.width} --> {widths["string"]}', 'I')
except:
logger.log(f'Unable to parse width argument "{args.width}"', 'W')
# split labels from fontsource parameter
fontsrc = []
labels = []
for sl in args.fontsrc:
try:
s, l = sl.split('=',1)
fontsrc.append(s)
labels.append(l)
except ValueError:
fontsrc.append(sl)
labels.append(None)
ftml = FB.FTML(test, logger, rendercheck=not args.norendercheck, fontscale=args.scale,
widths=widths, xslfn=args.xsl, fontsrc=fontsrc, fontlabel=labels, defaultrtl=args.rtl)
if test.lower().startswith("allchars"):
# all chars that should be in the font:
ftml.startTestGroup('Encoded characters')
for uid in sorted(builder.uids()):
if uid < 32: continue
c = builder.char(uid)
# iterate over all permutations of feature settings that might affect this character:
for featlist in builder.permuteFeatures(uids = (uid,)):
ftml.setFeatures(featlist)
builder.render((uid,), ftml)
# Don't close test -- collect consecutive encoded chars in a single row
ftml.clearFeatures()
for langID in sorted(c.langs):
ftml.setLang(langID)
builder.render((uid,), ftml)
ftml.clearLang()
# Add unencoded specials and ligatures -- i.e., things with a sequence of USVs in the glyph_data:
ftml.startTestGroup('Specials & ligatures from glyph_data')
for basename in sorted(builder.specials()):
special = builder.special(basename)
# iterate over all permutations of feature settings that might affect this special
for featlist in builder.permuteFeatures(uids = special.uids):
ftml.setFeatures(featlist)
builder.render(special.uids, ftml)
# close test so each special is on its own row:
ftml.closeTest()
ftml.clearFeatures()
if len(special.langs):
for langID in sorted(special.langs):
ftml.setLang(langID)
builder.render(special.uids, ftml)
ftml.closeTest()
ftml.clearLang()
# Add Lam-Alef data manually
ftml.startTestGroup('Lam-Alef')
# generate list of lam and alef characters that should be in the font:
lamlist = list(filter(lambda x: x in builder.uids(), (0x0644, 0x06B5, 0x06B6, 0x06B7, 0x06B8, 0x076A, 0x08A6)))
aleflist = list(filter(lambda x: x in builder.uids(), (0x0627, 0x0622, 0x0623, 0x0625, 0x0671, 0x0672, 0x0673, 0x0675, 0x0773, 0x0774)))
# iterate over all combinations:
for lam in lamlist:
for alef in aleflist:
for featlist in builder.permuteFeatures(uids = (lam, alef)):
ftml.setFeatures(featlist)
builder.render((lam,alef), ftml)
# close test so each combination is on its own row:
ftml.closeTest()
ftml.clearFeatures()
if test.lower().startswith("diac"):
# Diac attachment:
# Representative base and diac chars:
repDiac = list(filter(lambda x: x in builder.uids(), (0x064E, 0x0650, 0x065E, 0x0670, 0x0616, 0x06E3, 0x08F0, 0x08F2)))
repBase = list(filter(lambda x: x in builder.uids(), (0x0627, 0x0628, 0x062B, 0x0647, 0x064A, 0x77F, 0x08AC)))
ftml.startTestGroup('Representative diacritics on all bases that take diacritics')
for uid in sorted(builder.uids()):
# ignore some I don't care about:
if uid < 32 or uid in (0xAA, 0xBA): continue
c = builder.char(uid)
# Always process Lo, but others only if that take marks:
if c.general == 'Lo' or c.isBase:
for diac in repDiac:
for featlist in builder.permuteFeatures(uids = (uid,diac)):
ftml.setFeatures(featlist)
# Don't automatically separate connecting or mirrored forms into separate lines:
builder.render((uid,diac), ftml, addBreaks = False)
ftml.clearFeatures()
ftml.closeTest()
ftml.startTestGroup('All diacritics on representative bases')
for uid in sorted(builder.uids()):
# ignore non-ABS marks
if uid < 0x600 or uid in range(0xFE00, 0xFE10): continue
c = builder.char(uid)
if c.general == 'Mn':
for base in repBase:
for featlist in builder.permuteFeatures(uids = (uid,base)):
ftml.setFeatures(featlist)
builder.render((base,uid), ftml, keyUID = uid, addBreaks = False)
ftml.clearFeatures()
ftml.closeTest()
ftml.startTestGroup('Special cases')
builder.render((0x064A, 0x065E), ftml, comment="Yeh + Fatha should keep dots")
builder.render((0x064A, 0x0654), ftml, comment="Yeh + Hamza should loose dots")
ftml.closeTest()
# Write the output ftml file
ftml.writeFile(args.output)
def cmd() : execute("UFO",doit,argspec)
if __name__ == "__main__": cmd()
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