Add script for Symbolator diagrams generation

requirements.txt

@@ -3,6 +3,7 @@ flake8
 # rst_include tool as GitHub doesn't support `.. include::` when rendering
 # previews.
 rst_include
+git+git://github.com/SymbiFlow/symbolator.git@master#egg=symbolator
 
 # The Python API for the SkyWater PDK.
 -e scripts/python-skywater-pdk

scripts/python-skywater-pdk/skywater_pdk/cell/generate/symbol.py

@@ -0,0 +1,125 @@
+#!/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 sys
+import argparse
+from pathlib import Path
+import errno
+import contextlib
+import subprocess
+
+
+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(
+        'output_dir',
+        help='Path to the output directory',
+        type=Path
+    )
+    parser.add_argument(
+        '--libname',
+        help='Library name to generate the Symbolator diagrams for',
+        type=str
+    )
+    parser.add_argument(
+        '--version',
+        help='Version for which the Symbolator diagrams should be generated',
+        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 an output file that will store list of files for ' +
+              'which the symbolator failed to create symbols'
+              ),
+        type=Path
+    )
+    parser.add_argument(
+        '--overwrite-existing',
+        help='If present, the script will overwrite existing symbol.svg files',
+        action='store_true'
+    )
+
+    args = parser.parse_args(argv[1:])
+
+    libraries_dir = args.libraries_dir
+
+    symbol_v_files = libraries_dir.rglob('*.symbol.v')
+
+    nc = contextlib.nullcontext()
+
+    with open(args.failed_inputs, 'w') if args.failed_inputs else nc as err:
+        for symbol_v_file in symbol_v_files:
+            if args.libname and args.libname != symbol_v_file.parts[1]:
+                continue
+            if args.version and args.version != symbol_v_file.parts[2]:
+                continue
+
+            print(f'===> {str(symbol_v_file)}')
+            libname = symbol_v_file.parts[1]
+            out_filename = (args.output_dir /
+                            symbol_v_file.resolve()
+                            .relative_to(libraries_dir.resolve()))
+            out_filename = out_filename.with_suffix('.svg')
+            out_dir = out_filename.parent
+
+            if not out_dir.exists():
+                if args.create_dirs:
+                    out_dir.mkdir(parents=True)
+                else:
+                    print(f'The output directory {str(out_dir)} is missing')
+                    print('Run the script with --create-dirs')
+                    return errno.ENOENT
+
+            if out_filename.exists() and not args.overwrite_existing:
+                print(f'The {out_filename} already exists')
+                return errno.EEXIST
+
+            program = ('symbolator' +
+                       f' --libname {libname} --title -t -o {out_filename}' +
+                       f' --output-as-filename -i {str(symbol_v_file)}' +
+                       ' --format svg')
+            res = subprocess.run(
+                program.split(' '),
+                stdout=subprocess.PIPE,
+                stderr=subprocess.STDOUT
+            )
+            if res.returncode != 0:
+                print(
+                    f'Failed to run: {program}',
+                    file=sys.stderr
+                )
+                print('STDOUT:\n', file=sys.stderr)
+                print(res.stdout.decode())
+                err.write(f'{symbol_v_file}\n')
+    return 0
+
+
+if __name__ == '__main__':
+    sys.exit(main(sys.argv))