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The backends to be compiled are now automatically selected.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,159 @@ | ||
| #!/usr/bin/env python3 | ||
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| import argparse | ||
| import re | ||
| import os | ||
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| dir = os.path.realpath(os.path.dirname(__file__)) | ||
| dir_desc = os.path.join( | ||
| dir, 'deps', 'backends', 'doc', 'descriptions') | ||
| dir_desc_external = os.path.join( | ||
| dir, 'deps', 'backends', 'doc', 'descriptions-external') | ||
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| def read_desc(file): | ||
| # TODO: we shall improve this .desc parser later to properly handle nested | ||
| # devices and manufacturers, see deps/backends/tools/sane-desc.c, | ||
| # right now it's enough to get the information we want | ||
|
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| l = 1 | ||
| spec = { | ||
| ':backend': 's1', | ||
| ':version': 's1', | ||
| ':new': 'k', | ||
| ':manpage': 's1', | ||
| ':url': 's1', | ||
| ':devicetype': 'k', | ||
| ':desc': 's1', | ||
| ':mfg': 's1', | ||
| ':url': 's1', | ||
| ':model': 's1', | ||
| ':interface': 's1', | ||
| ':usbid': 's+', | ||
| ':scsi': 's+', | ||
| ':comment': 's+', | ||
| ':status': 'k', | ||
| } | ||
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| def ex(msg): | ||
| return Exception("%s, in file %s:%d" % (msg, os.path.basename(file), l)) | ||
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| def read_keyword(txt: str): | ||
| m = re.match(r'^(:[a-z]+)(.*)$', txt) | ||
| if not m: | ||
| raise ex("invalid keyword") | ||
| return m[1], m[2] | ||
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| def read_string(txt: str): | ||
| if txt[0] != '"': | ||
| # raise ex("invalid string") | ||
| # weird? unquoted string, read up to space | ||
| if txt[0] == ':' or txt[0].isspace(): | ||
| raise ex("invalid string") | ||
| i = 0 | ||
| while i < len(txt) and not txt[i].isspace(): | ||
| i += 1 | ||
| return txt[:i], txt[i:] | ||
| i = 1 | ||
| while i < len(txt) and (txt[i] != '"' or txt[i-1] == '\\'): | ||
| i += 1 | ||
| if i == len(txt): | ||
| raise ex("unterminated string") | ||
| return txt[1:i].replace('\\"', '"'), txt[i+1:] | ||
|
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| def consume_spaces(txt: str): | ||
| i = 0 | ||
| while i < len(txt) and txt[i].isspace(): | ||
| i += 1 | ||
| if i == len(txt) or txt[i] == ';': | ||
| return None | ||
| # XXX: out of spec, some strings end with extra '"', ignore | ||
| if i == len(txt) - 1 and txt[i] == '"': | ||
| return None | ||
| # XXX: out of spec, some strings start with double '"', remove | ||
| if len(txt) - i > 2 and txt[i:i+2] == '""' and not txt[i+3].isspace(): | ||
| i += 2 | ||
| if i == 0: | ||
| raise ex("expected space") | ||
| return txt[i:] | ||
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| def expect_empty(txt: str): | ||
| if consume_spaces(txt): | ||
| raise ex("unexpected extra data") | ||
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| result = [] | ||
| with open(file.path, 'r') as fp: | ||
| for line in fp: | ||
| line = line.strip() | ||
| if line and line[0] != ';': | ||
| k, rest = read_keyword(line) | ||
| if k not in spec: | ||
| raise ex("unknown keyword") | ||
| if not (rest := consume_spaces(rest)): | ||
| ex("unexpected end of line") | ||
| if spec[k][0] == 'k': | ||
| val, rest = read_keyword(rest) | ||
| expect_empty(rest) | ||
| elif spec[k][0] == 's': | ||
| val, rest = read_string(rest) | ||
| if spec[k][1] == '+': | ||
| val = [val] | ||
| while rest := consume_spaces(rest): | ||
| s, rest = read_string(rest) | ||
| val.append(s) | ||
| else: | ||
| expect_empty(rest) | ||
| # XXX: out of spec, some comments have multiple strings, read as array and join | ||
| if k == ':comment': | ||
| val = ' '.join(val) | ||
| result.append((k, val)) | ||
| l += 1 | ||
| return result | ||
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| def command_dump_desc(args): | ||
| for f in os.scandir(dir_desc): | ||
| print(read_desc(f)) | ||
| for f in os.scandir(dir_desc_external): | ||
| print(read_desc(f)) | ||
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| def usb_backends(args): | ||
| include = args.include.split(',') if args.include else [] | ||
| exclude = args.exclude.split(',') if args.exclude else [] | ||
| lst = [] | ||
| for f in os.scandir(dir_desc): | ||
| backend = os.path.splitext(f.name)[0] | ||
| if backend in exclude: | ||
| continue | ||
| elif backend in include: | ||
| lst.append(backend) | ||
| continue | ||
| desc = read_desc(f) | ||
| yes = False | ||
| for k, v in desc: | ||
| if k == ':interface' and v.find('USB') != -1: | ||
| yes = True | ||
| break | ||
| if yes: | ||
| lst.append(backend) | ||
| lst.sort() | ||
| print(' '.join(lst)) | ||
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| if __name__ == '__main__': | ||
| parser = argparse.ArgumentParser(prog='util') | ||
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| subparsers = parser.add_subparsers( | ||
| title='commands', dest='command', required=True) | ||
| parser_dump_desc = subparsers.add_parser('dump-desc', description='') | ||
| parser_dump_desc.set_defaults(fn=command_dump_desc) | ||
| parser_usb_backends = subparsers.add_parser('usb-backends', description='') | ||
| parser_usb_backends.add_argument( | ||
| '-i', '--include', help='backends to include (extra)') | ||
| parser_usb_backends.add_argument( | ||
| '-e', '--exclude', help='backends to exclude') | ||
| parser_usb_backends.set_defaults(fn=usb_backends) | ||
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| args = parser.parse_args() | ||
| args.fn(args) |