| from __future__ import print_function, division, absolute_import |
| from __future__ import unicode_literals |
| from fontTools.misc.py23 import * |
| from fontTools.feaLib.error import FeatureLibError |
| from fontTools.misc.encodingTools import getEncoding |
| from collections import OrderedDict |
| import itertools |
| |
| SHIFT = " " * 4 |
| |
| |
| def deviceToString(device): |
| if device is None: |
| return "<device NULL>" |
| else: |
| return "<device %s>" % ", ".join("%d %d" % t for t in device) |
| |
| |
| fea_keywords = set([ |
| "anchor", "anchordef", "anon", "anonymous", |
| "by", |
| "contour", "cursive", |
| "device", |
| "enum", "enumerate", "excludedflt", "exclude_dflt", |
| "feature", "from", |
| "ignore", "ignorebaseglyphs", "ignoreligatures", "ignoremarks", |
| "include", "includedflt", "include_dflt", |
| "language", "languagesystem", "lookup", "lookupflag", |
| "mark", "markattachmenttype", "markclass", |
| "nameid", "null", |
| "parameters", "pos", "position", |
| "required", "righttoleft", "reversesub", "rsub", |
| "script", "sub", "substitute", "subtable", |
| "table", |
| "usemarkfilteringset", "useextension", "valuerecorddef"] |
| ) |
| |
| |
| def asFea(g): |
| if hasattr(g, 'asFea'): |
| return g.asFea() |
| elif isinstance(g, tuple) and len(g) == 2: |
| return asFea(g[0]) + "-" + asFea(g[1]) # a range |
| elif g.lower() in fea_keywords: |
| return "\\" + g |
| else: |
| return g |
| |
| |
| class Element(object): |
| |
| def __init__(self, location): |
| self.location = location |
| |
| def build(self, builder): |
| pass |
| |
| def asFea(self, indent=""): |
| raise NotImplementedError |
| |
| def __str__(self): |
| return self.asFea() |
| |
| |
| class Statement(Element): |
| pass |
| |
| |
| class Expression(Element): |
| pass |
| |
| |
| class Comment(Element): |
| def __init__(self, location, text): |
| super(Comment, self).__init__(location) |
| self.text = text |
| |
| def asFea(self, indent=""): |
| return self.text |
| |
| |
| class GlyphName(Expression): |
| """A single glyph name, such as cedilla.""" |
| def __init__(self, location, glyph): |
| Expression.__init__(self, location) |
| self.glyph = glyph |
| |
| def glyphSet(self): |
| return (self.glyph,) |
| |
| def asFea(self, indent=""): |
| return str(self.glyph) |
| |
| |
| class GlyphClass(Expression): |
| """A glyph class, such as [acute cedilla grave].""" |
| def __init__(self, location, glyphs=None): |
| Expression.__init__(self, location) |
| self.glyphs = glyphs if glyphs is not None else [] |
| self.original = [] |
| self.curr = 0 |
| |
| def glyphSet(self): |
| return tuple(self.glyphs) |
| |
| def asFea(self, indent=""): |
| if len(self.original): |
| if self.curr < len(self.glyphs): |
| self.original.extend(self.glyphs[self.curr:]) |
| self.curr = len(self.glyphs) |
| return "[" + " ".join(map(asFea, self.original)) + "]" |
| else: |
| return "[" + " ".join(map(asFea, self.glyphs)) + "]" |
| |
| def extend(self, glyphs): |
| self.glyphs.extend(glyphs) |
| |
| def append(self, glyph): |
| self.glyphs.append(glyph) |
| |
| def add_range(self, start, end, glyphs): |
| if self.curr < len(self.glyphs): |
| self.original.extend(self.glyphs[self.curr:]) |
| self.original.append((start, end)) |
| self.glyphs.extend(glyphs) |
| self.curr = len(self.glyphs) |
| |
| def add_cid_range(self, start, end, glyphs): |
| if self.curr < len(self.glyphs): |
| self.original.extend(self.glyphs[self.curr:]) |
| self.original.append(("cid{:05d}".format(start), "cid{:05d}".format(end))) |
| self.glyphs.extend(glyphs) |
| self.curr = len(self.glyphs) |
| |
| def add_class(self, gc): |
| if self.curr < len(self.glyphs): |
| self.original.extend(self.glyphs[self.curr:]) |
| self.original.append(gc) |
| self.glyphs.extend(gc.glyphSet()) |
| self.curr = len(self.glyphs) |
| |
| |
| class GlyphClassName(Expression): |
| """A glyph class name, such as @FRENCH_MARKS.""" |
| def __init__(self, location, glyphclass): |
| Expression.__init__(self, location) |
| assert isinstance(glyphclass, GlyphClassDefinition) |
| self.glyphclass = glyphclass |
| |
| def glyphSet(self): |
| return tuple(self.glyphclass.glyphSet()) |
| |
| def asFea(self, indent=""): |
| return "@" + self.glyphclass.name |
| |
| |
| class MarkClassName(Expression): |
| """A mark class name, such as @FRENCH_MARKS defined with markClass.""" |
| def __init__(self, location, markClass): |
| Expression.__init__(self, location) |
| assert isinstance(markClass, MarkClass) |
| self.markClass = markClass |
| |
| def glyphSet(self): |
| return self.markClass.glyphSet() |
| |
| def asFea(self, indent=""): |
| return "@" + self.markClass.name |
| |
| |
| class AnonymousBlock(Statement): |
| def __init__(self, tag, content, location): |
| Statement.__init__(self, location) |
| self.tag, self.content = tag, content |
| |
| def asFea(self, indent=""): |
| res = "anon {} {{\n".format(self.tag) |
| res += self.content |
| res += "}} {};\n\n".format(self.tag) |
| return res |
| |
| |
| class Block(Statement): |
| def __init__(self, location): |
| Statement.__init__(self, location) |
| self.statements = [] |
| |
| def build(self, builder): |
| for s in self.statements: |
| s.build(builder) |
| |
| def asFea(self, indent=""): |
| indent += SHIFT |
| return indent + ("\n" + indent).join( |
| [s.asFea(indent=indent) for s in self.statements]) + "\n" |
| |
| |
| class FeatureFile(Block): |
| def __init__(self): |
| Block.__init__(self, location=None) |
| self.markClasses = {} # name --> ast.MarkClass |
| |
| def asFea(self, indent=""): |
| return "\n".join(s.asFea(indent=indent) for s in self.statements) |
| |
| |
| class FeatureBlock(Block): |
| def __init__(self, location, name, use_extension): |
| Block.__init__(self, location) |
| self.name, self.use_extension = name, use_extension |
| |
| def build(self, builder): |
| # TODO(sascha): Handle use_extension. |
| builder.start_feature(self.location, self.name) |
| # language exclude_dflt statements modify builder.features_ |
| # limit them to this block with temporary builder.features_ |
| features = builder.features_ |
| builder.features_ = {} |
| Block.build(self, builder) |
| for key, value in builder.features_.items(): |
| features.setdefault(key, []).extend(value) |
| builder.features_ = features |
| builder.end_feature() |
| |
| def asFea(self, indent=""): |
| res = indent + "feature %s {\n" % self.name.strip() |
| res += Block.asFea(self, indent=indent) |
| res += indent + "} %s;\n" % self.name.strip() |
| return res |
| |
| |
| class FeatureNamesBlock(Block): |
| def __init__(self, location): |
| Block.__init__(self, location) |
| |
| def asFea(self, indent=""): |
| res = indent + "featureNames {\n" |
| res += Block.asFea(self, indent=indent) |
| res += indent + "};\n" |
| return res |
| |
| |
| class LookupBlock(Block): |
| def __init__(self, location, name, use_extension): |
| Block.__init__(self, location) |
| self.name, self.use_extension = name, use_extension |
| |
| def build(self, builder): |
| # TODO(sascha): Handle use_extension. |
| builder.start_lookup_block(self.location, self.name) |
| Block.build(self, builder) |
| builder.end_lookup_block() |
| |
| def asFea(self, indent=""): |
| res = "lookup {} {{\n".format(self.name) |
| res += Block.asFea(self, indent=indent) |
| res += "{}}} {};\n".format(indent, self.name) |
| return res |
| |
| |
| class TableBlock(Block): |
| def __init__(self, location, name): |
| Block.__init__(self, location) |
| self.name = name |
| |
| def asFea(self, indent=""): |
| res = "table {} {{\n".format(self.name.strip()) |
| res += super(TableBlock, self).asFea(indent=indent) |
| res += "}} {};\n".format(self.name.strip()) |
| return res |
| |
| |
| class GlyphClassDefinition(Statement): |
| """Example: @UPPERCASE = [A-Z];""" |
| def __init__(self, location, name, glyphs): |
| Statement.__init__(self, location) |
| self.name = name |
| self.glyphs = glyphs |
| |
| def glyphSet(self): |
| return tuple(self.glyphs.glyphSet()) |
| |
| def asFea(self, indent=""): |
| return "@" + self.name + " = " + self.glyphs.asFea() + ";" |
| |
| |
| class GlyphClassDefStatement(Statement): |
| """Example: GlyphClassDef @UPPERCASE, [B], [C], [D];""" |
| def __init__(self, location, baseGlyphs, markGlyphs, |
| ligatureGlyphs, componentGlyphs): |
| Statement.__init__(self, location) |
| self.baseGlyphs, self.markGlyphs = (baseGlyphs, markGlyphs) |
| self.ligatureGlyphs = ligatureGlyphs |
| self.componentGlyphs = componentGlyphs |
| |
| def build(self, builder): |
| base = self.baseGlyphs.glyphSet() if self.baseGlyphs else tuple() |
| liga = self.ligatureGlyphs.glyphSet() \ |
| if self.ligatureGlyphs else tuple() |
| mark = self.markGlyphs.glyphSet() if self.markGlyphs else tuple() |
| comp = (self.componentGlyphs.glyphSet() |
| if self.componentGlyphs else tuple()) |
| builder.add_glyphClassDef(self.location, base, liga, mark, comp) |
| |
| def asFea(self, indent=""): |
| return "GlyphClassDef {}, {}, {}, {};".format( |
| self.baseGlyphs.asFea() if self.baseGlyphs else "", |
| self.ligatureGlyphs.asFea() if self.ligatureGlyphs else "", |
| self.markGlyphs.asFea() if self.markGlyphs else "", |
| self.componentGlyphs.asFea() if self.componentGlyphs else "") |
| |
| |
| # While glyph classes can be defined only once, the feature file format |
| # allows expanding mark classes with multiple definitions, each using |
| # different glyphs and anchors. The following are two MarkClassDefinitions |
| # for the same MarkClass: |
| # markClass [acute grave] <anchor 350 800> @FRENCH_ACCENTS; |
| # markClass [cedilla] <anchor 350 -200> @FRENCH_ACCENTS; |
| class MarkClass(object): |
| def __init__(self, name): |
| self.name = name |
| self.definitions = [] |
| self.glyphs = OrderedDict() # glyph --> ast.MarkClassDefinitions |
| |
| def addDefinition(self, definition): |
| assert isinstance(definition, MarkClassDefinition) |
| self.definitions.append(definition) |
| for glyph in definition.glyphSet(): |
| if glyph in self.glyphs: |
| otherLoc = self.glyphs[glyph].location |
| raise FeatureLibError( |
| "Glyph %s already defined at %s:%d:%d" % ( |
| glyph, otherLoc[0], otherLoc[1], otherLoc[2]), |
| definition.location) |
| self.glyphs[glyph] = definition |
| |
| def glyphSet(self): |
| return tuple(self.glyphs.keys()) |
| |
| def asFea(self, indent=""): |
| res = "\n".join(d.asFea(indent=indent) for d in self.definitions) |
| return res |
| |
| |
| class MarkClassDefinition(Statement): |
| def __init__(self, location, markClass, anchor, glyphs): |
| Statement.__init__(self, location) |
| assert isinstance(markClass, MarkClass) |
| assert isinstance(anchor, Anchor) and isinstance(glyphs, Expression) |
| self.markClass, self.anchor, self.glyphs = markClass, anchor, glyphs |
| |
| def glyphSet(self): |
| return self.glyphs.glyphSet() |
| |
| def asFea(self, indent=""): |
| return "{}markClass {} {} @{};".format( |
| indent, self.glyphs.asFea(), self.anchor.asFea(), |
| self.markClass.name) |
| |
| |
| class AlternateSubstStatement(Statement): |
| def __init__(self, location, prefix, glyph, suffix, replacement): |
| Statement.__init__(self, location) |
| self.prefix, self.glyph, self.suffix = (prefix, glyph, suffix) |
| self.replacement = replacement |
| |
| def build(self, builder): |
| glyph = self.glyph.glyphSet() |
| assert len(glyph) == 1, glyph |
| glyph = list(glyph)[0] |
| prefix = [p.glyphSet() for p in self.prefix] |
| suffix = [s.glyphSet() for s in self.suffix] |
| replacement = self.replacement.glyphSet() |
| builder.add_alternate_subst(self.location, prefix, glyph, suffix, |
| replacement) |
| |
| def asFea(self, indent=""): |
| res = "sub " |
| if len(self.prefix) or len(self.suffix): |
| if len(self.prefix): |
| res += " ".join(map(asFea, self.prefix)) + " " |
| res += asFea(self.glyph) + "'" # even though we really only use 1 |
| if len(self.suffix): |
| res += " " + " ".join(map(asFea, self.suffix)) |
| else: |
| res += asFea(self.glyph) |
| res += " from " |
| res += asFea(self.replacement) |
| res += ";" |
| return res |
| |
| |
| class Anchor(Expression): |
| def __init__(self, location, name, x, y, contourpoint, |
| xDeviceTable, yDeviceTable): |
| Expression.__init__(self, location) |
| self.name = name |
| self.x, self.y, self.contourpoint = x, y, contourpoint |
| self.xDeviceTable, self.yDeviceTable = xDeviceTable, yDeviceTable |
| |
| def asFea(self, indent=""): |
| if self.name is not None: |
| return "<anchor {}>".format(self.name) |
| res = "<anchor {} {}".format(self.x, self.y) |
| if self.contourpoint: |
| res += " contourpoint {}".format(self.contourpoint) |
| if self.xDeviceTable or self.yDeviceTable: |
| res += " " |
| res += deviceToString(self.xDeviceTable) |
| res += " " |
| res += deviceToString(self.yDeviceTable) |
| res += ">" |
| return res |
| |
| |
| class AnchorDefinition(Statement): |
| def __init__(self, location, name, x, y, contourpoint): |
| Statement.__init__(self, location) |
| self.name, self.x, self.y, self.contourpoint = name, x, y, contourpoint |
| |
| def asFea(self, indent=""): |
| res = "anchorDef {} {}".format(self.x, self.y) |
| if self.contourpoint: |
| res += " contourpoint {}".format(self.contourpoint) |
| res += " {};".format(self.name) |
| return res |
| |
| |
| class AttachStatement(Statement): |
| def __init__(self, location, glyphs, contourPoints): |
| Statement.__init__(self, location) |
| self.glyphs, self.contourPoints = (glyphs, contourPoints) |
| |
| def build(self, builder): |
| glyphs = self.glyphs.glyphSet() |
| builder.add_attach_points(self.location, glyphs, self.contourPoints) |
| |
| def asFea(self, indent=""): |
| return "Attach {} {};".format( |
| self.glyphs.asFea(), " ".join(str(c) for c in self.contourPoints)) |
| |
| |
| class ChainContextPosStatement(Statement): |
| def __init__(self, location, prefix, glyphs, suffix, lookups): |
| Statement.__init__(self, location) |
| self.prefix, self.glyphs, self.suffix = prefix, glyphs, suffix |
| self.lookups = lookups |
| |
| def build(self, builder): |
| prefix = [p.glyphSet() for p in self.prefix] |
| glyphs = [g.glyphSet() for g in self.glyphs] |
| suffix = [s.glyphSet() for s in self.suffix] |
| builder.add_chain_context_pos( |
| self.location, prefix, glyphs, suffix, self.lookups) |
| |
| def asFea(self, indent=""): |
| res = "pos " |
| if len(self.prefix) or len(self.suffix) or any([x is not None for x in self.lookups]): |
| if len(self.prefix): |
| res += " ".join(g.asFea() for g in self.prefix) + " " |
| for i, g in enumerate(self.glyphs): |
| res += g.asFea() + "'" |
| if self.lookups[i] is not None: |
| res += " lookup " + self.lookups[i].name |
| if i < len(self.glyphs) - 1: |
| res += " " |
| if len(self.suffix): |
| res += " " + " ".join(map(asFea, self.suffix)) |
| else: |
| res += " ".join(map(asFea, self.glyph)) |
| res += ";" |
| return res |
| |
| |
| class ChainContextSubstStatement(Statement): |
| def __init__(self, location, prefix, glyphs, suffix, lookups): |
| Statement.__init__(self, location) |
| self.prefix, self.glyphs, self.suffix = prefix, glyphs, suffix |
| self.lookups = lookups |
| |
| def build(self, builder): |
| prefix = [p.glyphSet() for p in self.prefix] |
| glyphs = [g.glyphSet() for g in self.glyphs] |
| suffix = [s.glyphSet() for s in self.suffix] |
| builder.add_chain_context_subst( |
| self.location, prefix, glyphs, suffix, self.lookups) |
| |
| def asFea(self, indent=""): |
| res = "sub " |
| if len(self.prefix) or len(self.suffix) or any([x is not None for x in self.lookups]): |
| if len(self.prefix): |
| res += " ".join(g.asFea() for g in self.prefix) + " " |
| for i, g in enumerate(self.glyphs): |
| res += g.asFea() + "'" |
| if self.lookups[i] is not None: |
| res += " lookup " + self.lookups[i].name |
| if i < len(self.glyphs) - 1: |
| res += " " |
| if len(self.suffix): |
| res += " " + " ".join(map(asFea, self.suffix)) |
| else: |
| res += " ".join(map(asFea, self.glyph)) |
| res += ";" |
| return res |
| |
| |
| class CursivePosStatement(Statement): |
| def __init__(self, location, glyphclass, entryAnchor, exitAnchor): |
| Statement.__init__(self, location) |
| self.glyphclass = glyphclass |
| self.entryAnchor, self.exitAnchor = entryAnchor, exitAnchor |
| |
| def build(self, builder): |
| builder.add_cursive_pos( |
| self.location, self.glyphclass.glyphSet(), self.entryAnchor, self.exitAnchor) |
| |
| def asFea(self, indent=""): |
| entry = self.entryAnchor.asFea() if self.entryAnchor else "<anchor NULL>" |
| exit = self.exitAnchor.asFea() if self.exitAnchor else "<anchor NULL>" |
| return "pos cursive {} {} {};".format(self.glyphclass.asFea(), entry, exit) |
| |
| |
| class FeatureReferenceStatement(Statement): |
| """Example: feature salt;""" |
| def __init__(self, location, featureName): |
| Statement.__init__(self, location) |
| self.location, self.featureName = (location, featureName) |
| |
| def build(self, builder): |
| builder.add_feature_reference(self.location, self.featureName) |
| |
| def asFea(self, indent=""): |
| return "feature {};".format(self.featureName) |
| |
| |
| class IgnorePosStatement(Statement): |
| def __init__(self, location, chainContexts): |
| Statement.__init__(self, location) |
| self.chainContexts = chainContexts |
| |
| def build(self, builder): |
| for prefix, glyphs, suffix in self.chainContexts: |
| prefix = [p.glyphSet() for p in prefix] |
| glyphs = [g.glyphSet() for g in glyphs] |
| suffix = [s.glyphSet() for s in suffix] |
| builder.add_chain_context_pos( |
| self.location, prefix, glyphs, suffix, []) |
| |
| def asFea(self, indent=""): |
| contexts = [] |
| for prefix, glyphs, suffix in self.chainContexts: |
| res = "" |
| if len(prefix) or len(suffix): |
| if len(prefix): |
| res += " ".join(map(asFea, prefix)) + " " |
| res += " ".join(g.asFea() + "'" for g in glyphs) |
| if len(suffix): |
| res += " " + " ".join(map(asFea, suffix)) |
| else: |
| res += " ".join(map(asFea, glyphs)) |
| contexts.append(res) |
| return "ignore pos " + ", ".join(contexts) + ";" |
| |
| |
| class IgnoreSubstStatement(Statement): |
| def __init__(self, location, chainContexts): |
| Statement.__init__(self, location) |
| self.chainContexts = chainContexts |
| |
| def build(self, builder): |
| for prefix, glyphs, suffix in self.chainContexts: |
| prefix = [p.glyphSet() for p in prefix] |
| glyphs = [g.glyphSet() for g in glyphs] |
| suffix = [s.glyphSet() for s in suffix] |
| builder.add_chain_context_subst( |
| self.location, prefix, glyphs, suffix, []) |
| |
| def asFea(self, indent=""): |
| contexts = [] |
| for prefix, glyphs, suffix in self.chainContexts: |
| res = "" |
| if len(prefix) or len(suffix): |
| if len(prefix): |
| res += " ".join(map(asFea, prefix)) + " " |
| res += " ".join(g.asFea() + "'" for g in glyphs) |
| if len(suffix): |
| res += " " + " ".join(map(asFea, suffix)) |
| else: |
| res += " ".join(map(asFea, glyphs)) |
| contexts.append(res) |
| return "ignore sub " + ", ".join(contexts) + ";" |
| |
| |
| class LanguageStatement(Statement): |
| def __init__(self, location, language, include_default, required): |
| Statement.__init__(self, location) |
| assert(len(language) == 4) |
| self.language = language |
| self.include_default = include_default |
| self.required = required |
| |
| def build(self, builder): |
| builder.set_language(location=self.location, language=self.language, |
| include_default=self.include_default, |
| required=self.required) |
| |
| def asFea(self, indent=""): |
| res = "language {}".format(self.language.strip()) |
| if not self.include_default: |
| res += " exclude_dflt" |
| if self.required: |
| res += " required" |
| res += ";" |
| return res |
| |
| |
| class LanguageSystemStatement(Statement): |
| def __init__(self, location, script, language): |
| Statement.__init__(self, location) |
| self.script, self.language = (script, language) |
| |
| def build(self, builder): |
| builder.add_language_system(self.location, self.script, self.language) |
| |
| def asFea(self, indent=""): |
| return "languagesystem {} {};".format(self.script, self.language.strip()) |
| |
| |
| class FontRevisionStatement(Statement): |
| def __init__(self, location, revision): |
| Statement.__init__(self, location) |
| self.revision = revision |
| |
| def build(self, builder): |
| builder.set_font_revision(self.location, self.revision) |
| |
| def asFea(self, indent=""): |
| return "FontRevision {:.3f};".format(self.revision) |
| |
| |
| class LigatureCaretByIndexStatement(Statement): |
| def __init__(self, location, glyphs, carets): |
| Statement.__init__(self, location) |
| self.glyphs, self.carets = (glyphs, carets) |
| |
| def build(self, builder): |
| glyphs = self.glyphs.glyphSet() |
| builder.add_ligatureCaretByIndex_(self.location, glyphs, set(self.carets)) |
| |
| def asFea(self, indent=""): |
| return "LigatureCaretByIndex {} {};".format( |
| self.glyphs.asFea(), " ".join(str(x) for x in self.carets)) |
| |
| |
| class LigatureCaretByPosStatement(Statement): |
| def __init__(self, location, glyphs, carets): |
| Statement.__init__(self, location) |
| self.glyphs, self.carets = (glyphs, carets) |
| |
| def build(self, builder): |
| glyphs = self.glyphs.glyphSet() |
| builder.add_ligatureCaretByPos_(self.location, glyphs, set(self.carets)) |
| |
| def asFea(self, indent=""): |
| return "LigatureCaretByPos {} {};".format( |
| self.glyphs.asFea(), " ".join(str(x) for x in self.carets)) |
| |
| |
| class LigatureSubstStatement(Statement): |
| def __init__(self, location, prefix, glyphs, suffix, replacement, |
| forceChain): |
| Statement.__init__(self, location) |
| self.prefix, self.glyphs, self.suffix = (prefix, glyphs, suffix) |
| self.replacement, self.forceChain = replacement, forceChain |
| |
| def build(self, builder): |
| prefix = [p.glyphSet() for p in self.prefix] |
| glyphs = [g.glyphSet() for g in self.glyphs] |
| suffix = [s.glyphSet() for s in self.suffix] |
| builder.add_ligature_subst( |
| self.location, prefix, glyphs, suffix, self.replacement, |
| self.forceChain) |
| |
| def asFea(self, indent=""): |
| res = "sub " |
| if len(self.prefix) or len(self.suffix) or self.forceChain: |
| if len(self.prefix): |
| res += " ".join(g.asFea() for g in self.prefix) + " " |
| res += " ".join(g.asFea() + "'" for g in self.glyphs) |
| if len(self.suffix): |
| res += " " + " ".join(g.asFea() for g in self.suffix) |
| else: |
| res += " ".join(g.asFea() for g in self.glyphs) |
| res += " by " |
| res += asFea(self.replacement) |
| res += ";" |
| return res |
| |
| |
| class LookupFlagStatement(Statement): |
| def __init__(self, location, value, markAttachment, markFilteringSet): |
| Statement.__init__(self, location) |
| self.value = value |
| self.markAttachment = markAttachment |
| self.markFilteringSet = markFilteringSet |
| |
| def build(self, builder): |
| markAttach = None |
| if self.markAttachment is not None: |
| markAttach = self.markAttachment.glyphSet() |
| markFilter = None |
| if self.markFilteringSet is not None: |
| markFilter = self.markFilteringSet.glyphSet() |
| builder.set_lookup_flag(self.location, self.value, |
| markAttach, markFilter) |
| |
| def asFea(self, indent=""): |
| res = "lookupflag" |
| flags = ["RightToLeft", "IgnoreBaseGlyphs", "IgnoreLigatures", "IgnoreMarks"] |
| curr = 1 |
| for i in range(len(flags)): |
| if self.value & curr != 0: |
| res += " " + flags[i] |
| curr = curr << 1 |
| if self.markAttachment is not None: |
| res += " MarkAttachmentType {}".format(self.markAttachment.asFea()) |
| if self.markFilteringSet is not None: |
| res += " UseMarkFilteringSet {}".format(self.markFilteringSet.asFea()) |
| res += ";" |
| return res |
| |
| |
| class LookupReferenceStatement(Statement): |
| def __init__(self, location, lookup): |
| Statement.__init__(self, location) |
| self.location, self.lookup = (location, lookup) |
| |
| def build(self, builder): |
| builder.add_lookup_call(self.lookup.name) |
| |
| def asFea(self, indent=""): |
| return "lookup {};".format(self.lookup.name) |
| |
| |
| class MarkBasePosStatement(Statement): |
| def __init__(self, location, base, marks): |
| Statement.__init__(self, location) |
| self.base, self.marks = base, marks |
| |
| def build(self, builder): |
| builder.add_mark_base_pos(self.location, self.base.glyphSet(), self.marks) |
| |
| def asFea(self, indent=""): |
| res = "pos base {}".format(self.base.asFea()) |
| for a, m in self.marks: |
| res += " {} mark @{}".format(a.asFea(), m.name) |
| res += ";" |
| return res |
| |
| |
| class MarkLigPosStatement(Statement): |
| def __init__(self, location, ligatures, marks): |
| Statement.__init__(self, location) |
| self.ligatures, self.marks = ligatures, marks |
| |
| def build(self, builder): |
| builder.add_mark_lig_pos(self.location, self.ligatures.glyphSet(), self.marks) |
| |
| def asFea(self, indent=""): |
| res = "pos ligature {}".format(self.ligatures.asFea()) |
| ligs = [] |
| for l in self.marks: |
| temp = "" |
| if l is None or not len(l): |
| temp = " <anchor NULL>" |
| else: |
| for a, m in l: |
| temp += " {} mark @{}".format(a.asFea(), m.name) |
| ligs.append(temp) |
| res += ("\n" + indent + SHIFT + "ligComponent").join(ligs) |
| res += ";" |
| return res |
| |
| |
| class MarkMarkPosStatement(Statement): |
| def __init__(self, location, baseMarks, marks): |
| Statement.__init__(self, location) |
| self.baseMarks, self.marks = baseMarks, marks |
| |
| def build(self, builder): |
| builder.add_mark_mark_pos(self.location, self.baseMarks.glyphSet(), self.marks) |
| |
| def asFea(self, indent=""): |
| res = "pos mark {}".format(self.baseMarks.asFea()) |
| for a, m in self.marks: |
| res += " {} mark @{}".format(a.asFea(), m.name) |
| res += ";" |
| return res |
| |
| |
| class MultipleSubstStatement(Statement): |
| def __init__(self, location, prefix, glyph, suffix, replacement): |
| Statement.__init__(self, location) |
| self.prefix, self.glyph, self.suffix = prefix, glyph, suffix |
| self.replacement = replacement |
| |
| def build(self, builder): |
| prefix = [p.glyphSet() for p in self.prefix] |
| suffix = [s.glyphSet() for s in self.suffix] |
| builder.add_multiple_subst( |
| self.location, prefix, self.glyph, suffix, self.replacement) |
| |
| def asFea(self, indent=""): |
| res = "sub " |
| if len(self.prefix) or len(self.suffix): |
| if len(self.prefix): |
| res += " ".join(map(asFea, self.prefix)) + " " |
| res += asFea(self.glyph) + "'" |
| if len(self.suffix): |
| res += " " + " ".join(map(asFea, self.suffix)) |
| else: |
| res += asFea(self.glyph) |
| res += " by " |
| res += " ".join(map(asFea, self.replacement)) |
| res += ";" |
| return res |
| |
| |
| class PairPosStatement(Statement): |
| def __init__(self, location, enumerated, |
| glyphs1, valuerecord1, glyphs2, valuerecord2): |
| Statement.__init__(self, location) |
| self.enumerated = enumerated |
| self.glyphs1, self.valuerecord1 = glyphs1, valuerecord1 |
| self.glyphs2, self.valuerecord2 = glyphs2, valuerecord2 |
| |
| def build(self, builder): |
| if self.enumerated: |
| g = [self.glyphs1.glyphSet(), self.glyphs2.glyphSet()] |
| for glyph1, glyph2 in itertools.product(*g): |
| builder.add_specific_pair_pos( |
| self.location, glyph1, self.valuerecord1, |
| glyph2, self.valuerecord2) |
| return |
| |
| is_specific = (isinstance(self.glyphs1, GlyphName) and |
| isinstance(self.glyphs2, GlyphName)) |
| if is_specific: |
| builder.add_specific_pair_pos( |
| self.location, self.glyphs1.glyph, self.valuerecord1, |
| self.glyphs2.glyph, self.valuerecord2) |
| else: |
| builder.add_class_pair_pos( |
| self.location, self.glyphs1.glyphSet(), self.valuerecord1, |
| self.glyphs2.glyphSet(), self.valuerecord2) |
| |
| def asFea(self, indent=""): |
| res = "enum " if self.enumerated else "" |
| if self.valuerecord2: |
| res += "pos {} {} {} {};".format( |
| self.glyphs1.asFea(), self.valuerecord1.makeString(), |
| self.glyphs2.asFea(), self.valuerecord2.makeString()) |
| else: |
| res += "pos {} {} {};".format( |
| self.glyphs1.asFea(), self.glyphs2.asFea(), |
| self.valuerecord1.makeString()) |
| return res |
| |
| |
| class ReverseChainSingleSubstStatement(Statement): |
| def __init__(self, location, old_prefix, old_suffix, glyphs, replacements): |
| Statement.__init__(self, location) |
| self.old_prefix, self.old_suffix = old_prefix, old_suffix |
| self.glyphs = glyphs |
| self.replacements = replacements |
| |
| def build(self, builder): |
| prefix = [p.glyphSet() for p in self.old_prefix] |
| suffix = [s.glyphSet() for s in self.old_suffix] |
| originals = self.glyphs[0].glyphSet() |
| replaces = self.replacements[0].glyphSet() |
| if len(replaces) == 1: |
| replaces = replaces * len(originals) |
| builder.add_reverse_chain_single_subst( |
| self.location, prefix, suffix, dict(zip(originals, replaces))) |
| |
| def asFea(self, indent=""): |
| res = "rsub " |
| if len(self.old_prefix) or len(self.old_suffix): |
| if len(self.old_prefix): |
| res += " ".join(asFea(g) for g in self.old_prefix) + " " |
| res += " ".join(asFea(g) + "'" for g in self.glyphs) |
| if len(self.old_suffix): |
| res += " " + " ".join(asFea(g) for g in self.old_suffix) |
| else: |
| res += " ".join(map(asFea, self.glyphs)) |
| res += " by {};".format(" ".join(asFea(g) for g in self.replacements)) |
| return res |
| |
| |
| class SingleSubstStatement(Statement): |
| def __init__(self, location, glyphs, replace, prefix, suffix, forceChain): |
| Statement.__init__(self, location) |
| self.prefix, self.suffix = prefix, suffix |
| self.forceChain = forceChain |
| self.glyphs = glyphs |
| self.replacements = replace |
| |
| def build(self, builder): |
| prefix = [p.glyphSet() for p in self.prefix] |
| suffix = [s.glyphSet() for s in self.suffix] |
| originals = self.glyphs[0].glyphSet() |
| replaces = self.replacements[0].glyphSet() |
| if len(replaces) == 1: |
| replaces = replaces * len(originals) |
| builder.add_single_subst(self.location, prefix, suffix, |
| OrderedDict(zip(originals, replaces)), |
| self.forceChain) |
| |
| def asFea(self, indent=""): |
| res = "sub " |
| if len(self.prefix) or len(self.suffix) or self.forceChain: |
| if len(self.prefix): |
| res += " ".join(asFea(g) for g in self.prefix) + " " |
| res += " ".join(asFea(g) + "'" for g in self.glyphs) |
| if len(self.suffix): |
| res += " " + " ".join(asFea(g) for g in self.suffix) |
| else: |
| res += " ".join(asFea(g) for g in self.glyphs) |
| res += " by {};".format(" ".join(asFea(g) for g in self.replacements)) |
| return res |
| |
| |
| class ScriptStatement(Statement): |
| def __init__(self, location, script): |
| Statement.__init__(self, location) |
| self.script = script |
| |
| def build(self, builder): |
| builder.set_script(self.location, self.script) |
| |
| def asFea(self, indent=""): |
| return "script {};".format(self.script.strip()) |
| |
| |
| class SinglePosStatement(Statement): |
| def __init__(self, location, pos, prefix, suffix, forceChain): |
| Statement.__init__(self, location) |
| self.pos, self.prefix, self.suffix = pos, prefix, suffix |
| self.forceChain = forceChain |
| |
| def build(self, builder): |
| prefix = [p.glyphSet() for p in self.prefix] |
| suffix = [s.glyphSet() for s in self.suffix] |
| pos = [(g.glyphSet(), value) for g, value in self.pos] |
| builder.add_single_pos(self.location, prefix, suffix, |
| pos, self.forceChain) |
| |
| def asFea(self, indent=""): |
| res = "pos " |
| if len(self.prefix) or len(self.suffix) or self.forceChain: |
| if len(self.prefix): |
| res += " ".join(map(asFea, self.prefix)) + " " |
| res += " ".join([asFea(x[0]) + "'" + ( |
| (" " + x[1].makeString()) if x[1] else "") for x in self.pos]) |
| if len(self.suffix): |
| res += " " + " ".join(map(asFea, self.suffix)) |
| else: |
| res += " ".join([asFea(x[0]) + " " + |
| (x[1].makeString() if x[1] else "") for x in self.pos]) |
| res += ";" |
| return res |
| |
| |
| class SubtableStatement(Statement): |
| def __init__(self, location): |
| Statement.__init__(self, location) |
| |
| |
| class ValueRecord(Expression): |
| def __init__(self, location, vertical, |
| xPlacement, yPlacement, xAdvance, yAdvance, |
| xPlaDevice, yPlaDevice, xAdvDevice, yAdvDevice): |
| Expression.__init__(self, location) |
| self.xPlacement, self.yPlacement = (xPlacement, yPlacement) |
| self.xAdvance, self.yAdvance = (xAdvance, yAdvance) |
| self.xPlaDevice, self.yPlaDevice = (xPlaDevice, yPlaDevice) |
| self.xAdvDevice, self.yAdvDevice = (xAdvDevice, yAdvDevice) |
| self.vertical = vertical |
| |
| def __eq__(self, other): |
| return (self.xPlacement == other.xPlacement and |
| self.yPlacement == other.yPlacement and |
| self.xAdvance == other.xAdvance and |
| self.yAdvance == other.yAdvance and |
| self.xPlaDevice == other.xPlaDevice and |
| self.xAdvDevice == other.xAdvDevice) |
| |
| def __ne__(self, other): |
| return not self.__eq__(other) |
| |
| def __hash__(self): |
| return (hash(self.xPlacement) ^ hash(self.yPlacement) ^ |
| hash(self.xAdvance) ^ hash(self.yAdvance) ^ |
| hash(self.xPlaDevice) ^ hash(self.yPlaDevice) ^ |
| hash(self.xAdvDevice) ^ hash(self.yAdvDevice)) |
| |
| def makeString(self, vertical=None): |
| x, y = self.xPlacement, self.yPlacement |
| xAdvance, yAdvance = self.xAdvance, self.yAdvance |
| xPlaDevice, yPlaDevice = self.xPlaDevice, self.yPlaDevice |
| xAdvDevice, yAdvDevice = self.xAdvDevice, self.yAdvDevice |
| if vertical is None: |
| vertical = self.vertical |
| |
| # Try format A, if possible. |
| if x is None and y is None: |
| if xAdvance is None and vertical: |
| return str(yAdvance) |
| elif yAdvance is None and not vertical: |
| return str(xAdvance) |
| |
| # Try format B, if possible. |
| if (xPlaDevice is None and yPlaDevice is None and |
| xAdvDevice is None and yAdvDevice is None): |
| return "<%s %s %s %s>" % (x, y, xAdvance, yAdvance) |
| |
| # Last resort is format C. |
| return "<%s %s %s %s %s %s %s %s>" % ( |
| x, y, xAdvance, yAdvance, |
| deviceToString(xPlaDevice), deviceToString(yPlaDevice), |
| deviceToString(xAdvDevice), deviceToString(yAdvDevice)) |
| |
| |
| class ValueRecordDefinition(Statement): |
| def __init__(self, location, name, value): |
| Statement.__init__(self, location) |
| self.name = name |
| self.value = value |
| |
| def asFea(self, indent=""): |
| return "valueRecordDef {} {};".format(self.value.asFea(), self.name) |
| |
| |
| def simplify_name_attributes(pid, eid, lid): |
| if pid == 3 and eid == 1 and lid == 1033: |
| return "" |
| elif pid == 1 and eid == 0 and lid == 0: |
| return "1" |
| else: |
| return "{} {} {}".format(pid, eid, lid) |
| |
| |
| class NameRecord(Statement): |
| def __init__(self, location, nameID, platformID, |
| platEncID, langID, string): |
| Statement.__init__(self, location) |
| self.nameID = nameID |
| self.platformID = platformID |
| self.platEncID = platEncID |
| self.langID = langID |
| self.string = string |
| |
| def build(self, builder): |
| builder.add_name_record( |
| self.location, self.nameID, self.platformID, |
| self.platEncID, self.langID, self.string) |
| |
| def asFea(self, indent=""): |
| def escape(c, escape_pattern): |
| # Also escape U+0022 QUOTATION MARK and U+005C REVERSE SOLIDUS |
| if c >= 0x20 and c <= 0x7E and c not in (0x22, 0x5C): |
| return unichr(c) |
| else: |
| return escape_pattern % c |
| encoding = getEncoding(self.platformID, self.platEncID, self.langID) |
| if encoding is None: |
| raise FeatureLibError("Unsupported encoding", self.location) |
| s = tobytes(self.string, encoding=encoding) |
| if encoding == "utf_16_be": |
| escaped_string = "".join([ |
| escape(byteord(s[i]) * 256 + byteord(s[i + 1]), r"\%04x") |
| for i in range(0, len(s), 2)]) |
| else: |
| escaped_string = "".join([escape(byteord(b), r"\%02x") for b in s]) |
| plat = simplify_name_attributes( |
| self.platformID, self.platEncID, self.langID) |
| if plat != "": |
| plat += " " |
| return "nameid {} {}\"{}\";".format(self.nameID, plat, escaped_string) |
| |
| |
| class FeatureNameStatement(NameRecord): |
| def build(self, builder): |
| NameRecord.build(self, builder) |
| builder.add_featureName(self.location, self.nameID) |
| |
| def asFea(self, indent=""): |
| if self.nameID == "size": |
| tag = "sizemenuname" |
| else: |
| tag = "name" |
| plat = simplify_name_attributes(self.platformID, self.platEncID, self.langID) |
| if plat != "": |
| plat += " " |
| return "{} {}\"{}\";".format(tag, plat, self.string) |
| |
| |
| class SizeParameters(Statement): |
| def __init__(self, location, DesignSize, SubfamilyID, RangeStart, |
| RangeEnd): |
| Statement.__init__(self, location) |
| self.DesignSize = DesignSize |
| self.SubfamilyID = SubfamilyID |
| self.RangeStart = RangeStart |
| self.RangeEnd = RangeEnd |
| |
| def build(self, builder): |
| builder.set_size_parameters(self.location, self.DesignSize, |
| self.SubfamilyID, self.RangeStart, self.RangeEnd) |
| |
| def asFea(self, indent=""): |
| res = "parameters {:.1f} {}".format(self.DesignSize, self.SubfamilyID) |
| if self.RangeStart != 0 or self.RangeEnd != 0: |
| res += " {} {}".format(int(self.RangeStart * 10), int(self.RangeEnd * 10)) |
| return res + ";" |
| |
| |
| class BaseAxis(Statement): |
| def __init__(self, location, bases, scripts, vertical): |
| Statement.__init__(self, location) |
| self.bases = bases |
| self.scripts = scripts |
| self.vertical = vertical |
| |
| def build(self, builder): |
| builder.set_base_axis(self.bases, self.scripts, self.vertical) |
| |
| def asFea(self, indent=""): |
| direction = "Vert" if self.vertical else "Horiz" |
| scripts = ["{} {} {}".format(a[0], a[1], " ".join(map(str, a[2]))) for a in self.scripts] |
| return "{}Axis.BaseTagList {};\n{}{}Axis.BaseScriptList {};".format( |
| direction, " ".join(self.bases), indent, direction, ", ".join(scripts)) |
| |
| |
| class OS2Field(Statement): |
| def __init__(self, location, key, value): |
| Statement.__init__(self, location) |
| self.key = key |
| self.value = value |
| |
| def build(self, builder): |
| builder.add_os2_field(self.key, self.value) |
| |
| def asFea(self, indent=""): |
| def intarr2str(x): |
| return " ".join(map(str, x)) |
| numbers = ("FSType", "TypoAscender", "TypoDescender", "TypoLineGap", |
| "winAscent", "winDescent", "XHeight", "CapHeight", |
| "WeightClass", "WidthClass", "LowerOpSize", "UpperOpSize") |
| ranges = ("UnicodeRange", "CodePageRange") |
| keywords = dict([(x.lower(), [x, str]) for x in numbers]) |
| keywords.update([(x.lower(), [x, intarr2str]) for x in ranges]) |
| keywords["panose"] = ["Panose", intarr2str] |
| keywords["vendor"] = ["Vendor", lambda y: '"{}"'.format(y)] |
| if self.key in keywords: |
| return "{} {};".format(keywords[self.key][0], keywords[self.key][1](self.value)) |
| return "" # should raise exception |
| |
| |
| class HheaField(Statement): |
| def __init__(self, location, key, value): |
| Statement.__init__(self, location) |
| self.key = key |
| self.value = value |
| |
| def build(self, builder): |
| builder.add_hhea_field(self.key, self.value) |
| |
| def asFea(self, indent=""): |
| fields = ("CaretOffset", "Ascender", "Descender", "LineGap") |
| keywords = dict([(x.lower(), x) for x in fields]) |
| return "{} {};".format(keywords[self.key], self.value) |
| |
| |
| class VheaField(Statement): |
| def __init__(self, location, key, value): |
| Statement.__init__(self, location) |
| self.key = key |
| self.value = value |
| |
| def build(self, builder): |
| builder.add_vhea_field(self.key, self.value) |
| |
| def asFea(self, indent=""): |
| fields = ("VertTypoAscender", "VertTypoDescender", "VertTypoLineGap") |
| keywords = dict([(x.lower(), x) for x in fields]) |
| return "{} {};".format(keywords[self.key], self.value) |
