def export_mtext(self, tagwriter: 'TagWriter') -> None:
txt = escape_dxf_line_endings(self.text)
str_chunks = split_mtext_string(txt, size=250)
if len(str_chunks) == 0:
str_chunks.append("")
while len(str_chunks) > 1:
tagwriter.write_tag2(3, str_chunks.pop(0))
tagwriter.write_tag2(1, str_chunks[0])
def export_coordinate_system_definition(self, tagwriter: 'TagWriter'):
text = self.coordinate_system_definition.replace('\n', '^J')
chunks = split_mtext_string(text, size=255)
if len(chunks) == 0:
chunks.append("")
while len(chunks) > 1:
tagwriter.write_tag2(303, chunks.pop(0))
tagwriter.write_tag2(301, chunks[0])
def test_split_longer_string(self):
chunks = split_mtext_string(self.MTEXT_SHORT_STR * 4, 20)
assert len(chunks) == 2
assert chunks[0] == self.MTEXT_SHORT_STR * 2
assert chunks[1] == self.MTEXT_SHORT_STR * 2
def test_split_long_string(self):
chunks = split_mtext_string(self.MTEXT_SHORT_STR * 3, 20)
assert len(chunks) == 2
assert self.MTEXT_SHORT_STR * 2 == chunks[0]
assert self.MTEXT_SHORT_STR == chunks[1]
def test_split_short_string(self):
chunks = split_mtext_string(self.MTEXT_SHORT_STR, 20)
assert len(chunks) == 1
assert self.MTEXT_SHORT_STR == chunks[0]
def test_split_empty_string(self):
chunks = split_mtext_string('', 20)
assert len(chunks) == 0
def test_do_not_split_at_caret(self):
# do not split at '^'
chunks = split_mtext_string('a' * 19 + '^Ixxx^', 20)
assert len(chunks) == 2
assert chunks[0] == 'a' * 19
assert chunks[1] == '^Ixxx^'
def test_do_not_split_at_caret(self):
# do not split at '^'
chunks = split_mtext_string("a" * 19 + "^Ixxx^", 20)
assert len(chunks) == 2
assert chunks[0] == "a" * 19
assert chunks[1] == "^Ixxx^"
