mirror of
https://github.com/psycopg/psycopg2.git
synced 2024-11-10 19:16:34 +03:00
140 lines
4.2 KiB
Python
Executable File
140 lines
4.2 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Generate the errors module from PostgreSQL source code.
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The script can be run at a new PostgreSQL release to refresh the module.
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"""
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# Copyright (C) 2018-2019 Daniele Varrazzo <daniele.varrazzo@gmail.com>
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# Copyright (C) 2020 The Psycopg Team
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#
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# psycopg2 is free software: you can redistribute it and/or modify it
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# under the terms of the GNU Lesser General Public License as published
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# by the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# psycopg2 is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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# License for more details.
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import os
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import re
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import sys
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from urllib.request import urlopen
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from collections import defaultdict
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def main():
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filename = os.path.join(
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os.path.dirname(__file__), "../psycopg/sqlstate_errors.h")
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# If you add a version to the list fix the docs (in errors.rst)
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classes, errors = fetch_errors(
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['9.1', '9.2', '9.3', '9.4', '9.5', '9.6', '10', '11', '12', '13'])
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f = open(filename, "w")
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print("/*\n * Autogenerated by 'scripts/make_errors.py'.\n */\n", file=f)
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for line in generate_module_data(classes, errors):
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print(line, file=f)
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def parse_errors_txt(url):
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classes = {}
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errors = defaultdict(dict)
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page = urlopen(url)
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for line in page:
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# Strip comments and skip blanks
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line = line.decode('ascii').split('#')[0].strip()
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if not line:
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continue
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# Parse a section
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m = re.match(r"Section: (Class (..) - .+)", line)
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if m:
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label, class_ = m.groups()
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classes[class_] = label
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continue
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# Parse an error
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m = re.match(r"(.....)\s+(?:E|W|S)\s+ERRCODE_(\S+)(?:\s+(\S+))?$", line)
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if m:
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errcode, macro, spec = m.groups()
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# skip errcodes without specs as they are not publically visible
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if not spec:
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continue
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errlabel = spec.upper()
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errors[class_][errcode] = errlabel
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continue
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# We don't expect anything else
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raise ValueError("unexpected line:\n%s" % line)
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return classes, errors
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errors_txt_url = \
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"http://git.postgresql.org/gitweb/?p=postgresql.git;a=blob_plain;" \
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"f=src/backend/utils/errcodes.txt;hb=%s"
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def fetch_errors(versions):
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classes = {}
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errors = defaultdict(dict)
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for version in versions:
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print(version, file=sys.stderr)
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tver = tuple(map(int, version.split()[0].split('.')))
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tag = '{}{}_STABLE'.format(
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(tver[0] >= 10 and 'REL_' or 'REL'),
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version.replace('.', '_'))
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c1, e1 = parse_errors_txt(errors_txt_url % tag)
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classes.update(c1)
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for c, cerrs in e1.items():
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errors[c].update(cerrs)
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return classes, errors
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def generate_module_data(classes, errors):
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tmpl = '{"%(errcode)s", "%(cls)s"},'
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specific = {
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'38002': 'ModifyingSqlDataNotPermittedExt',
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'38003': 'ProhibitedSqlStatementAttemptedExt',
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'38004': 'ReadingSqlDataNotPermittedExt',
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'39004': 'NullValueNotAllowedExt',
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'XX000': 'InternalError_',
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}
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seen = set("""
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Error Warning InterfaceError DataError DatabaseError ProgrammingError
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IntegrityError InternalError NotSupportedError OperationalError
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QueryCanceledError TransactionRollbackError
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""".split())
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for clscode, clslabel in sorted(classes.items()):
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if clscode in ('00', '01'):
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# success and warning - never raised
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continue
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yield "\n/* %s */" % clslabel
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for errcode, errlabel in sorted(errors[clscode].items()):
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if errcode in specific:
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clsname = specific[errcode]
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else:
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clsname = errlabel.title().replace('_', '')
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if clsname in seen:
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raise Exception("class already existing: %s" % clsname)
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seen.add(clsname)
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yield tmpl % {
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'cls': clsname,
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'errcode': errcode
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}
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if __name__ == '__main__':
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sys.exit(main())
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