scripts/codeconverter/converter.py

   1 #!/usr/bin/env python3
   2 # QEMU library
   3 #
   4 # Copyright (C) 2020 Red Hat Inc.
   5 #
   6 # Authors:
   7 #  Eduardo Habkost <ehabkost@redhat.com>
   8 #
   9 # This work is licensed under the terms of the GNU GPL, version 2.  See
  10 # the COPYING file in the top-level directory.
  11 #
  12 import sys
  13 import argparse
  14 import os
  15 import os.path
  16 import re
  17 from typing import *
  18
  19 from codeconverter.patching import FileInfo, match_class_dict, FileList
  20 import codeconverter.qom_macros
  21 from codeconverter.qom_type_info import TI_FIELDS, type_infos, TypeInfoVar
  22
  23 import logging
  24 logger = logging.getLogger(__name__)
  25 DBG = logger.debug
  26 INFO = logger.info
  27 WARN = logger.warning
  28
  29 def process_all_files(parser: argparse.ArgumentParser, args: argparse.Namespace) -> None:
  30     DBG("filenames: %r", args.filenames)
  31
  32     files = FileList()
  33     files.extend(FileInfo(files, fn, args.force) for fn in args.filenames)
  34     for f in files:
  35         DBG('opening %s', f.filename)
  36         f.load()
  37
  38     if args.table:
  39         fields = ['filename', 'variable_name'] + TI_FIELDS
  40         print('\t'.join(fields))
  41         for f in files:
  42             for t in f.matches_of_type(TypeInfoVar):
  43                 assert isinstance(t, TypeInfoVar)
  44                 values = [f.filename, t.name] + \
  45                          [t.get_raw_initializer_value(f)
  46                           for f in TI_FIELDS]
  47                 DBG('values: %r', values)
  48                 assert all('\t' not in v for v in values)
  49                 values = [v.replace('\n', ' ').replace('"', '') for v in values]
  50                 print('\t'.join(values))
  51         return
  52
  53     match_classes = match_class_dict()
  54     if not args.patterns:
  55         parser.error("--pattern is required")
  56
  57     classes = [p for arg in args.patterns
  58                for p in re.split(r'[\s,]', arg)
  59                if p.strip()]
  60     for c in classes:
  61         if c not in match_classes \
  62            or not match_classes[c].regexp:
  63             print("Invalid pattern name: %s" % (c), file=sys.stderr)
  64             print("Valid patterns:", file=sys.stderr)
  65             print(PATTERN_HELP, file=sys.stderr)
  66             sys.exit(1)
  67
  68     DBG("classes: %r", classes)
  69     files.patch_content(max_passes=args.passes, class_names=classes)
  70
  71     for f in files:
  72         #alltypes.extend(f.type_infos)
  73         #full_types.extend(f.full_types())
  74
  75         if not args.dry_run:
  76             if args.inplace:
  77                 f.patch_inplace()
  78             if args.diff:
  79                 f.show_diff()
  80             if not args.diff and not args.inplace:
  81                 f.write_to_file(sys.stdout)
  82                 sys.stdout.flush()
  83
  84
  85 PATTERN_HELP = ('\n'.join("  %s: %s" % (n, str(c.__doc__).strip())
  86                 for (n,c) in sorted(match_class_dict().items())
  87                 if c.has_replacement_rule()))
  88
  89 def main() -> None:
  90     p = argparse.ArgumentParser(formatter_class=argparse.RawDescriptionHelpFormatter)
  91     p.add_argument('filenames', nargs='+')
  92     p.add_argument('--passes', type=int, default=1,
  93                    help="Number of passes (0 means unlimited)")
  94     p.add_argument('--pattern', required=True, action='append',
  95                    default=[], dest='patterns',
  96                    help="Pattern to scan for")
  97     p.add_argument('--inplace', '-i', action='store_true',
  98                    help="Patch file in place")
  99     p.add_argument('--dry-run', action='store_true',
 100                    help="Don't patch files or print patching results")
 101     p.add_argument('--force', '-f', action='store_true',
 102                    help="Perform changes even if not completely safe")
 103     p.add_argument('--diff', action='store_true',
 104                    help="Print diff output on stdout")
 105     p.add_argument('--debug', '-d', action='store_true',
 106                    help="Enable debugging")
 107     p.add_argument('--verbose', '-v', action='store_true',
 108                    help="Verbose logging on stderr")
 109     p.add_argument('--table', action='store_true',
 110                    help="Print CSV table of type information")
 111     p.add_argument_group("Valid pattern names",
 112                          PATTERN_HELP)
 113     args = p.parse_args()
 114
 115     loglevel = (logging.DEBUG if args.debug
 116              else logging.INFO if args.verbose
 117              else logging.WARN)
 118     logging.basicConfig(format='%(levelname)s: %(message)s', level=loglevel)
 119     DBG("args: %r", args)
 120     process_all_files(p, args)
 121
 122 if __name__ == '__main__':
 123     main()