meson: Move all code generation scripts to utils/codegen/

We have multiple code generation scripts in utils/, mixed with other
miscellaneous utilities, as well as a larger code base based on mojom in
utils/ipc/. To make code sharing easier between the generator scripts,
without creating a mess in the utils/ directory, move all the code
generation code to utils/codegen/.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>

utils/ipc/extract-docs.py

@@ -1,79 +0,0 @@
-#!/usr/bin/env python3
-# SPDX-License-Identifier: GPL-2.0-or-later
-# Copyright (C) 2021, Google Inc.
-#
-# Author: Paul Elder <paul.elder@ideasonboard.com>
-#
-# Extract doxygen documentation from mojom files
-
-import argparse
-import re
-import sys
-
-regex_block_start = re.compile(r'^/\*\*$')
-regex_block_end = re.compile(r'^ \*/$')
-regex_spdx = re.compile(r'^/\* SPDX-License-Identifier: .* \*/$')
-
-
-def main(argv):
-
-    # Parse command line arguments
-    parser = argparse.ArgumentParser()
-    parser.add_argument('-o', dest='output', metavar='file',
-                        type=argparse.FileType('w', encoding='utf-8'),
-                        default=sys.stdout,
-                        help='Output file name (default: standard output)')
-    parser.add_argument('input', type=str,
-                        help='Input file name.')
-    args = parser.parse_args(argv[1:])
-
-    lines = open(args.input, 'r').readlines()
-    pipeline = args.input.split('/')[-1].replace('.mojom', '')
-
-    if not regex_spdx.match(lines[0]):
-        raise Exception(f'Missing SPDX license header in {args.input}')
-
-    data = lines[0]
-    data += f'''\
-/*
- * Copyright (C) 2021, Google Inc.
- *
- * Docs file for generated {pipeline}.mojom
- *
- * This file is auto-generated. Do not edit.
- */
-
-namespace libcamera {{
-
-'''
-
-    in_block = False
-    comment = ''
-    for lineno, line in enumerate(lines, start=1):
-        if regex_block_start.match(line):
-            if in_block:
-                raise SyntaxError('Expected end of comment',
-                                  (args.input, lineno, 1, line))
-            in_block = True
-            comment = line
-            continue
-
-        if regex_block_end.match(line):
-            if in_block:
-                comment += line
-                data += comment + '\n'
-            in_block = False
-            continue
-
-        if in_block:
-            comment += line
-
-    data += '} /* namespace libcamera */\n'
-
-    args.output.write(data)
-
-    return 0
-
-
-if __name__ == '__main__':
-    sys.exit(main(sys.argv))