132 lines
3.7 KiB
Python
132 lines
3.7 KiB
Python
import struct
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from fontTools.misc import etree
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from fontTools.misc.testTools import getXML, parseXML
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from fontTools.ttLib import TTFont
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from fontTools.ttLib.tables.S_V_G_ import table_S_V_G_
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import pytest
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def dump(table, ttFont=None):
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print("\n".join(getXML(table.toXML, ttFont)))
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def strip_xml_whitespace(xml_string):
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def strip_or_none(text):
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text = text.strip() if text else None
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return text if text else None
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tree = etree.fromstring(xml_string)
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for e in tree.iter("*"):
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e.text = strip_or_none(e.text)
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e.tail = strip_or_none(e.tail)
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return etree.tostring(tree, encoding="utf-8")
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SVG_DOCS = [
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strip_xml_whitespace(svg)
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for svg in (
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b"""\
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<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1">
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<defs>
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<rect x="100" y="-200" width="300" height="400" id="p1"/>
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</defs>
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<g id="glyph1">
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<use xlink:href="#p1" fill="#red"/>
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</g>
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<g id="glyph2">
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<use xlink:href="#p1" fill="#blue"/>
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</g>
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<g id="glyph4">
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<use xlink:href="#p1" fill="#green"/>
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</g>
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</svg>""",
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b"""\
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<svg xmlns="http://www.w3.org/2000/svg" version="1.1">
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<g id="glyph3">
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<path d="M0,0 L100,0 L50,100 Z"/>
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</g>
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</svg>""",
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)
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]
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OTSVG_DATA = b"".join(
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[
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# SVG table header
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b"\x00\x00" # version (0)
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b"\x00\x00\x00\x0a" # offset to SVGDocumentList (10)
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b"\x00\x00\x00\x00" # reserved (0)
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# SVGDocumentList
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b"\x00\x03" # number of SVGDocumentRecords (3)
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# SVGDocumentRecord[0]
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b"\x00\x01" # startGlyphID (1)
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b"\x00\x02" # endGlyphID (2)
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b"\x00\x00\x00\x26" # svgDocOffset (2 + 12*3 == 38 == 0x26)
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+ struct.pack(">L", len(SVG_DOCS[0])) # svgDocLength
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# SVGDocumentRecord[1]
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+ b"\x00\x03" # startGlyphID (3)
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b"\x00\x03" # endGlyphID (3)
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+ struct.pack(">L", 0x26 + len(SVG_DOCS[0])) # svgDocOffset
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+ struct.pack(">L", len(SVG_DOCS[1])) # svgDocLength
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# SVGDocumentRecord[2]
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+ b"\x00\x04" # startGlyphID (4)
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b"\x00\x04" # endGlyphID (4)
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b"\x00\x00\x00\x26" # svgDocOffset (38); records 0 and 2 point to same SVG doc
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+ struct.pack(">L", len(SVG_DOCS[0])) # svgDocLength
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]
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+ SVG_DOCS
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)
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OTSVG_TTX = [
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'<svgDoc endGlyphID="2" startGlyphID="1">',
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f" <![CDATA[{SVG_DOCS[0].decode()}]]>",
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"</svgDoc>",
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'<svgDoc endGlyphID="3" startGlyphID="3">',
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f" <![CDATA[{SVG_DOCS[1].decode()}]]>",
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"</svgDoc>",
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'<svgDoc endGlyphID="4" startGlyphID="4">',
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f" <![CDATA[{SVG_DOCS[0].decode()}]]>",
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"</svgDoc>",
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]
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@pytest.fixture
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def font():
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font = TTFont()
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font.setGlyphOrder([".notdef"] + ["glyph%05d" % i for i in range(1, 30)])
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return font
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def test_decompile_and_compile(font):
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table = table_S_V_G_()
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table.decompile(OTSVG_DATA, font)
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assert table.compile(font) == OTSVG_DATA
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def test_decompile_and_dump_ttx(font):
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table = table_S_V_G_()
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table.decompile(OTSVG_DATA, font)
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dump(table, font)
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assert getXML(table.toXML, font) == OTSVG_TTX
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def test_load_from_ttx_and_compile(font):
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table = table_S_V_G_()
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for name, attrs, content in parseXML(OTSVG_TTX):
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table.fromXML(name, attrs, content, font)
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assert table.compile(font) == OTSVG_DATA
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def test_round_trip_ttx(font):
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table = table_S_V_G_()
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for name, attrs, content in parseXML(OTSVG_TTX):
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table.fromXML(name, attrs, content, font)
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compiled = table.compile(font)
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table = table_S_V_G_()
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table.decompile(compiled, font)
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assert getXML(table.toXML, font) == OTSVG_TTX
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