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Merge pull request #1920 from rocallahan/readbytes 

Add a Layout.read_bytes() method that reads a layout from a byte array
This commit is contained in:
Matthias Köfferlein 2024-11-30 17:47:03 +01:00 committed by GitHub
parent 6861b68964 db56b0293e
commit 41383e4642
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2 changed files with 40 additions and 0 deletions
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19
src/db/db/gsiDeclDbReader.cc
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@ -433,6 +433,15 @@ namespace gsi
return reader.read (*layout, options); return reader.read (*layout, options);
} }
static db::LayerMap
load_bytes_with_options (db::Layout *layout, const std::vector<char> &bytes, const db::LoadLayoutOptions &options)
{
tl::InputMemoryStream byte_stream (bytes.data(), bytes.size());
tl::InputStream stream (byte_stream);
db::Reader reader (stream);
return reader.read (*layout, options);
}
// extend the layout class by two reader methods // extend the layout class by two reader methods
static static
gsi::ClassExt<db::Layout> layout_reader_decl ( gsi::ClassExt<db::Layout> layout_reader_decl (
@ -454,6 +463,16 @@ namespace gsi
"@return A layer map that contains the mapping used by the reader including the layers that have been created." "@return A layer map that contains the mapping used by the reader including the layers that have been created."
"\n" "\n"
"This method has been added in version 0.18." "This method has been added in version 0.18."
) +
gsi::method_ext ("read_bytes", &load_bytes_with_options, gsi::arg ("bytes"), gsi::arg ("options"),
"@brief Load the layout from the given bytes array with options\n"
"The format of the file is determined automatically and automatic unzipping is provided. "
"In this version, some reader options can be specified. "
"@param bytes The data to load.\n"
"@param options The options object specifying further options for the reader.\n"
"@return A layer map that contains the mapping used by the reader including the layers that have been created."
"\n"
"This method has been added in version 0.29."
), ),
"" ""
); );

21
testdata/python/dbLayoutTest.py vendored
View File

@ -1200,6 +1200,27 @@ class DBLayoutTest(unittest.TestCase):
self.assertEqual(str(t), "r180 0,0") self.assertEqual(str(t), "r180 0,0")
def test_read_bytes(self):
testtmp = os.getenv("TESTTMP_WITH_NAME", os.getenv("TESTTMP", "."))
file_gds = os.path.join(testtmp, "bytes.gds")
ly = pya.Layout()
top = ly.create_cell("TOP")
l1 = ly.layer(1, 0)
shape = top.shapes(l1).insert(pya.Box(0, 10, 20, 30))
ly.write(file_gds)
with open(file_gds, "rb") as f:
byte_buffer = f.read()
ly2 = pya.Layout()
ly2.read_bytes(byte_buffer, pya.LoadLayoutOptions())
l2 = ly2.layer(1, 0)
self.assertEqual(ly2.top_cell().bbox().to_s(), "(0,10;20,30)")
# run unit tests # run unit tests
if __name__ == '__main__': if __name__ == '__main__':
suite = unittest.TestLoader().loadTestsFromTestCase(DBLayoutTest) suite = unittest.TestLoader().loadTestsFromTestCase(DBLayoutTest)