Added script for generating cell layouts from GDS and tech files

Signed-off-by: Grzegorz Latosinski <glatosinski@antmicro.com>

scripts/python-skywater-pdk/skywater_pdk/gds_to_svg/generate-gds-svgs.py

@@ -0,0 +1,109 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#
+# Copyright 2020 SkyWater PDK Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+import argparse
+from pathlib import Path
+import sys
+import contextlib
+import traceback
+import errno
+
+from gds_to_svg import convert_to_svg
+
+
+def main(argv):
+    parser = argparse.ArgumentParser(prog=argv[0])
+    parser.add_argument(
+        'libraries_dir',
+        help='Path to the libraries directory of skywater-pdk',
+        type=Path
+    )
+    parser.add_argument(
+        'tech_file',
+        help='Path to the .tech file',
+        type=Path
+    )
+    parser.add_argument(
+        'output_dir',
+        help='Path to the output directory',
+        type=Path
+    )
+    parser.add_argument(
+        '--libname',
+        help='Library name to generate cell layouts for from GDS files',
+        type=str
+    )
+    parser.add_argument(
+        '--version',
+        help='Version to generate cell layouts for from GDS files',
+        type=str
+    )
+    parser.add_argument(
+        '--create-dirs',
+        help='Create directories for output when not present',
+        action='store_true'
+    )
+    parser.add_argument(
+        '--failed-inputs',
+        help='Path to GDS files for which Magic failed to generate SVG files',
+        type=Path
+    )
+
+    args = parser.parse_args(argv[1:])
+
+    gdsfiles = list(args.libraries_dir.rglob('*.gds'))
+
+    nc = contextlib.nullcontext()
+
+    with open(args.failed_inputs, 'w') if args.failed_inputs else nc as err:
+        for gdsfile in gdsfiles:
+            outdir = (args.output_dir /
+                      gdsfile.parent.resolve()
+                      .relative_to(args.libraries_dir.resolve()))
+            library = outdir.relative_to(args.output_dir).parts[0]
+            ver = outdir.relative_to(args.output_dir).parts[1]
+            if args.libname and args.libname != library:
+                continue
+            if args.version and args.version != ver:
+                continue
+            print(f'===> {str(gdsfile)}')
+            try:
+                if not outdir.exists():
+                    if args.create_dirs:
+                        outdir.mkdir(parents=True)
+                    else:
+                        print(f'The output directory {str(outdir)} is missing')
+                        print('Run the script with --create-dirs')
+                        return errno.ENOENT
+                outfile = outdir / gdsfile.with_suffix('.svg').name
+                convert_to_svg(gdsfile, args.tech_file, outfile)
+            except Exception:
+                print(
+                    f'Failed to generate cell layout for {str(gdsfile)}',
+                    file=sys.stderr
+                )
+                traceback.print_exc()
+                err.write(f'{gdsfile}\n')
+
+    print('Finished generating cell layouts')
+    return 0
+
+
+if __name__ == '__main__':
+    sys.exit(main(sys.argv))