diff options
Diffstat (limited to 'Lib/fontTools/cffLib/specializer.py')
| -rw-r--r-- | Lib/fontTools/cffLib/specializer.py | 37 |
1 files changed, 27 insertions, 10 deletions
diff --git a/Lib/fontTools/cffLib/specializer.py b/Lib/fontTools/cffLib/specializer.py index fbfefa92..677f03b7 100644 --- a/Lib/fontTools/cffLib/specializer.py +++ b/Lib/fontTools/cffLib/specializer.py @@ -304,7 +304,7 @@ def _convertBlendOpToArgs(blendList): deltaArgs = args[numBlends:] numDeltaValues = len(deltaArgs) deltaList = [ deltaArgs[i:i + numRegions] for i in range(0, numDeltaValues, numRegions) ] - blend_args = [ a + b for a, b in zip(defaultArgs,deltaList)] + blend_args = [ a + b + [1] for a, b in zip(defaultArgs,deltaList)] return blend_args def generalizeCommands(commands, ignoreErrors=False): @@ -399,10 +399,10 @@ def _convertToBlendCmds(args): else: prev_stack_use = stack_use # The arg is a tuple of blend values. - # These are each (master 0,delta 1..delta n) + # These are each (master 0,delta 1..delta n, 1) # Combine as many successive tuples as we can, # up to the max stack limit. - num_sources = len(arg) + num_sources = len(arg) - 1 blendlist = [arg] i += 1 stack_use += 1 + num_sources # 1 for the num_blends arg @@ -427,7 +427,8 @@ def _convertToBlendCmds(args): for arg in blendlist: blend_args.append(arg[0]) for arg in blendlist: - blend_args.extend(arg[1:]) + assert arg[-1] == 1 + blend_args.extend(arg[1:-1]) blend_args.append(num_blends) new_args.append(blend_args) stack_use = prev_stack_use + num_blends @@ -437,12 +438,13 @@ def _convertToBlendCmds(args): def _addArgs(a, b): if isinstance(b, list): if isinstance(a, list): - if len(a) != len(b): + if len(a) != len(b) or a[-1] != b[-1]: raise ValueError() - return [_addArgs(va, vb) for va,vb in zip(a, b)] + return [_addArgs(va, vb) for va,vb in zip(a[:-1], b[:-1])] + [a[-1]] else: a, b = b, a if isinstance(a, list): + assert a[-1] == 1 return [_addArgs(a[0], b)] + a[1:] return a + b @@ -739,12 +741,27 @@ if __name__ == '__main__': if len(sys.argv) == 1: import doctest sys.exit(doctest.testmod().failed) - program = stringToProgram(sys.argv[1:]) + + import argparse + + parser = argparse.ArgumentParser( + "fonttools cffLib.specialer", description="CFF CharString generalizer/specializer") + parser.add_argument( + "program", metavar="command", nargs="*", help="Commands.") + parser.add_argument( + "--num-regions", metavar="NumRegions", nargs="*", default=None, + help="Number of variable-font regions for blend opertaions.") + + options = parser.parse_args(sys.argv[1:]) + + getNumRegions = None if options.num_regions is None else lambda vsIndex: int(options.num_regions[0 if vsIndex is None else vsIndex]) + + program = stringToProgram(options.program) print("Program:"); print(programToString(program)) - commands = programToCommands(program) + commands = programToCommands(program, getNumRegions) print("Commands:"); print(commands) program2 = commandsToProgram(commands) print("Program from commands:"); print(programToString(program2)) assert program == program2 - print("Generalized program:"); print(programToString(generalizeProgram(program))) - print("Specialized program:"); print(programToString(specializeProgram(program))) + print("Generalized program:"); print(programToString(generalizeProgram(program, getNumRegions))) + print("Specialized program:"); print(programToString(specializeProgram(program, getNumRegions))) |