559 lines
18 KiB
Python
559 lines
18 KiB
Python
|
# mysql/reflection.py
|
||
|
|
# Copyright (C) 2005-2021 the SQLAlchemy authors and contributors
|
||
|
|
# <see AUTHORS file>
|
||
|
|
#
|
||
|
|
# This module is part of SQLAlchemy and is released under
|
||
|
|
# the MIT License: http://www.opensource.org/licenses/mit-license.php
|
||
|
|
|
||
|
|
import re
|
||
|
|
|
||
|
|
from .enumerated import ENUM
|
||
|
|
from .enumerated import SET
|
||
|
|
from .types import DATETIME
|
||
|
|
from .types import TIME
|
||
|
|
from .types import TIMESTAMP
|
||
|
|
from ... import log
|
||
|
|
from ... import types as sqltypes
|
||
|
|
from ... import util
|
||
|
|
|
||
|
|
|
||
|
|
class ReflectedState(object):
|
||
|
|
"""Stores raw information about a SHOW CREATE TABLE statement."""
|
||
|
|
|
||
|
|
def __init__(self):
|
||
|
|
self.columns = []
|
||
|
|
self.table_options = {}
|
||
|
|
self.table_name = None
|
||
|
|
self.keys = []
|
||
|
|
self.fk_constraints = []
|
||
|
|
self.ck_constraints = []
|
||
|
|
|
||
|
|
|
||
|
|
@log.class_logger
|
||
|
|
class MySQLTableDefinitionParser(object):
|
||
|
|
"""Parses the results of a SHOW CREATE TABLE statement."""
|
||
|
|
|
||
|
|
def __init__(self, dialect, preparer):
|
||
|
|
self.dialect = dialect
|
||
|
|
self.preparer = preparer
|
||
|
|
self._prep_regexes()
|
||
|
|
|
||
|
|
def parse(self, show_create, charset):
|
||
|
|
state = ReflectedState()
|
||
|
|
state.charset = charset
|
||
|
|
for line in re.split(r"\r?\n", show_create):
|
||
|
|
if line.startswith(" " + self.preparer.initial_quote):
|
||
|
|
self._parse_column(line, state)
|
||
|
|
# a regular table options line
|
||
|
|
elif line.startswith(") "):
|
||
|
|
self._parse_table_options(line, state)
|
||
|
|
# an ANSI-mode table options line
|
||
|
|
elif line == ")":
|
||
|
|
pass
|
||
|
|
elif line.startswith("CREATE "):
|
||
|
|
self._parse_table_name(line, state)
|
||
|
|
# Not present in real reflection, but may be if
|
||
|
|
# loading from a file.
|
||
|
|
elif not line:
|
||
|
|
pass
|
||
|
|
else:
|
||
|
|
type_, spec = self._parse_constraints(line)
|
||
|
|
if type_ is None:
|
||
|
|
util.warn("Unknown schema content: %r" % line)
|
||
|
|
elif type_ == "key":
|
||
|
|
state.keys.append(spec)
|
||
|
|
elif type_ == "fk_constraint":
|
||
|
|
state.fk_constraints.append(spec)
|
||
|
|
elif type_ == "ck_constraint":
|
||
|
|
state.ck_constraints.append(spec)
|
||
|
|
else:
|
||
|
|
pass
|
||
|
|
return state
|
||
|
|
|
||
|
|
def _parse_constraints(self, line):
|
||
|
|
"""Parse a KEY or CONSTRAINT line.
|
||
|
|
|
||
|
|
:param line: A line of SHOW CREATE TABLE output
|
||
|
|
"""
|
||
|
|
|
||
|
|
# KEY
|
||
|
|
m = self._re_key.match(line)
|
||
|
|
if m:
|
||
|
|
spec = m.groupdict()
|
||
|
|
# convert columns into name, length pairs
|
||
|
|
# NOTE: we may want to consider SHOW INDEX as the
|
||
|
|
# format of indexes in MySQL becomes more complex
|
||
|
|
spec["columns"] = self._parse_keyexprs(spec["columns"])
|
||
|
|
if spec["version_sql"]:
|
||
|
|
m2 = self._re_key_version_sql.match(spec["version_sql"])
|
||
|
|
if m2 and m2.groupdict()["parser"]:
|
||
|
|
spec["parser"] = m2.groupdict()["parser"]
|
||
|
|
if spec["parser"]:
|
||
|
|
spec["parser"] = self.preparer.unformat_identifiers(
|
||
|
|
spec["parser"]
|
||
|
|
)[0]
|
||
|
|
return "key", spec
|
||
|
|
|
||
|
|
# FOREIGN KEY CONSTRAINT
|
||
|
|
m = self._re_fk_constraint.match(line)
|
||
|
|
if m:
|
||
|
|
spec = m.groupdict()
|
||
|
|
spec["table"] = self.preparer.unformat_identifiers(spec["table"])
|
||
|
|
spec["local"] = [c[0] for c in self._parse_keyexprs(spec["local"])]
|
||
|
|
spec["foreign"] = [
|
||
|
|
c[0] for c in self._parse_keyexprs(spec["foreign"])
|
||
|
|
]
|
||
|
|
return "fk_constraint", spec
|
||
|
|
|
||
|
|
# CHECK constraint
|
||
|
|
m = self._re_ck_constraint.match(line)
|
||
|
|
if m:
|
||
|
|
spec = m.groupdict()
|
||
|
|
return "ck_constraint", spec
|
||
|
|
|
||
|
|
# PARTITION and SUBPARTITION
|
||
|
|
m = self._re_partition.match(line)
|
||
|
|
if m:
|
||
|
|
# Punt!
|
||
|
|
return "partition", line
|
||
|
|
|
||
|
|
# No match.
|
||
|
|
return (None, line)
|
||
|
|
|
||
|
|
def _parse_table_name(self, line, state):
|
||
|
|
"""Extract the table name.
|
||
|
|
|
||
|
|
:param line: The first line of SHOW CREATE TABLE
|
||
|
|
"""
|
||
|
|
|
||
|
|
regex, cleanup = self._pr_name
|
||
|
|
m = regex.match(line)
|
||
|
|
if m:
|
||
|
|
state.table_name = cleanup(m.group("name"))
|
||
|
|
|
||
|
|
def _parse_table_options(self, line, state):
|
||
|
|
"""Build a dictionary of all reflected table-level options.
|
||
|
|
|
||
|
|
:param line: The final line of SHOW CREATE TABLE output.
|
||
|
|
"""
|
||
|
|
|
||
|
|
options = {}
|
||
|
|
|
||
|
|
if not line or line == ")":
|
||
|
|
pass
|
||
|
|
|
||
|
|
else:
|
||
|
|
rest_of_line = line[:]
|
||
|
|
for regex, cleanup in self._pr_options:
|
||
|
|
m = regex.search(rest_of_line)
|
||
|
|
if not m:
|
||
|
|
continue
|
||
|
|
directive, value = m.group("directive"), m.group("val")
|
||
|
|
if cleanup:
|
||
|
|
value = cleanup(value)
|
||
|
|
options[directive.lower()] = value
|
||
|
|
rest_of_line = regex.sub("", rest_of_line)
|
||
|
|
|
||
|
|
for nope in ("auto_increment", "data directory", "index directory"):
|
||
|
|
options.pop(nope, None)
|
||
|
|
|
||
|
|
for opt, val in options.items():
|
||
|
|
state.table_options["%s_%s" % (self.dialect.name, opt)] = val
|
||
|
|
|
||
|
|
def _parse_column(self, line, state):
|
||
|
|
"""Extract column details.
|
||
|
|
|
||
|
|
Falls back to a 'minimal support' variant if full parse fails.
|
||
|
|
|
||
|
|
:param line: Any column-bearing line from SHOW CREATE TABLE
|
||
|
|
"""
|
||
|
|
|
||
|
|
spec = None
|
||
|
|
m = self._re_column.match(line)
|
||
|
|
if m:
|
||
|
|
spec = m.groupdict()
|
||
|
|
spec["full"] = True
|
||
|
|
else:
|
||
|
|
m = self._re_column_loose.match(line)
|
||
|
|
if m:
|
||
|
|
spec = m.groupdict()
|
||
|
|
spec["full"] = False
|
||
|
|
if not spec:
|
||
|
|
util.warn("Unknown column definition %r" % line)
|
||
|
|
return
|
||
|
|
if not spec["full"]:
|
||
|
|
util.warn("Incomplete reflection of column definition %r" % line)
|
||
|
|
|
||
|
|
name, type_, args = spec["name"], spec["coltype"], spec["arg"]
|
||
|
|
|
||
|
|
try:
|
||
|
|
col_type = self.dialect.ischema_names[type_]
|
||
|
|
except KeyError:
|
||
|
|
util.warn(
|
||
|
|
"Did not recognize type '%s' of column '%s'" % (type_, name)
|
||
|
|
)
|
||
|
|
col_type = sqltypes.NullType
|
||
|
|
|
||
|
|
# Column type positional arguments eg. varchar(32)
|
||
|
|
if args is None or args == "":
|
||
|
|
type_args = []
|
||
|
|
elif args[0] == "'" and args[-1] == "'":
|
||
|
|
type_args = self._re_csv_str.findall(args)
|
||
|
|
else:
|
||
|
|
type_args = [int(v) for v in self._re_csv_int.findall(args)]
|
||
|
|
|
||
|
|
# Column type keyword options
|
||
|
|
type_kw = {}
|
||
|
|
|
||
|
|
if issubclass(col_type, (DATETIME, TIME, TIMESTAMP)):
|
||
|
|
if type_args:
|
||
|
|
type_kw["fsp"] = type_args.pop(0)
|
||
|
|
|
||
|
|
for kw in ("unsigned", "zerofill"):
|
||
|
|
if spec.get(kw, False):
|
||
|
|
type_kw[kw] = True
|
||
|
|
for kw in ("charset", "collate"):
|
||
|
|
if spec.get(kw, False):
|
||
|
|
type_kw[kw] = spec[kw]
|
||
|
|
if issubclass(col_type, (ENUM, SET)):
|
||
|
|
type_args = _strip_values(type_args)
|
||
|
|
|
||
|
|
if issubclass(col_type, SET) and "" in type_args:
|
||
|
|
type_kw["retrieve_as_bitwise"] = True
|
||
|
|
|
||
|
|
type_instance = col_type(*type_args, **type_kw)
|
||
|
|
|
||
|
|
col_kw = {}
|
||
|
|
|
||
|
|
# NOT NULL
|
||
|
|
col_kw["nullable"] = True
|
||
|
|
# this can be "NULL" in the case of TIMESTAMP
|
||
|
|
if spec.get("notnull", False) == "NOT NULL":
|
||
|
|
col_kw["nullable"] = False
|
||
|
|
|
||
|
|
# AUTO_INCREMENT
|
||
|
|
if spec.get("autoincr", False):
|
||
|
|
col_kw["autoincrement"] = True
|
||
|
|
elif issubclass(col_type, sqltypes.Integer):
|
||
|
|
col_kw["autoincrement"] = False
|
||
|
|
|
||
|
|
# DEFAULT
|
||
|
|
default = spec.get("default", None)
|
||
|
|
|
||
|
|
if default == "NULL":
|
||
|
|
# eliminates the need to deal with this later.
|
||
|
|
default = None
|
||
|
|
|
||
|
|
comment = spec.get("comment", None)
|
||
|
|
|
||
|
|
if comment is not None:
|
||
|
|
comment = comment.replace("\\\\", "\\").replace("''", "'")
|
||
|
|
|
||
|
|
sqltext = spec.get("generated")
|
||
|
|
if sqltext is not None:
|
||
|
|
computed = dict(sqltext=sqltext)
|
||
|
|
persisted = spec.get("persistence")
|
||
|
|
if persisted is not None:
|
||
|
|
computed["persisted"] = persisted == "STORED"
|
||
|
|
col_kw["computed"] = computed
|
||
|
|
|
||
|
|
col_d = dict(
|
||
|
|
name=name, type=type_instance, default=default, comment=comment
|
||
|
|
)
|
||
|
|
col_d.update(col_kw)
|
||
|
|
state.columns.append(col_d)
|
||
|
|
|
||
|
|
def _describe_to_create(self, table_name, columns):
|
||
|
|
"""Re-format DESCRIBE output as a SHOW CREATE TABLE string.
|
||
|
|
|
||
|
|
DESCRIBE is a much simpler reflection and is sufficient for
|
||
|
|
reflecting views for runtime use. This method formats DDL
|
||
|
|
for columns only- keys are omitted.
|
||
|
|
|
||
|
|
:param columns: A sequence of DESCRIBE or SHOW COLUMNS 6-tuples.
|
||
|
|
SHOW FULL COLUMNS FROM rows must be rearranged for use with
|
||
|
|
this function.
|
||
|
|
"""
|
||
|
|
|
||
|
|
buffer = []
|
||
|
|
for row in columns:
|
||
|
|
(name, col_type, nullable, default, extra) = [
|
||
|
|
row[i] for i in (0, 1, 2, 4, 5)
|
||
|
|
]
|
||
|
|
|
||
|
|
line = [" "]
|
||
|
|
line.append(self.preparer.quote_identifier(name))
|
||
|
|
line.append(col_type)
|
||
|
|
if not nullable:
|
||
|
|
line.append("NOT NULL")
|
||
|
|
if default:
|
||
|
|
if "auto_increment" in default:
|
||
|
|
pass
|
||
|
|
elif col_type.startswith("timestamp") and default.startswith(
|
||
|
|
"C"
|
||
|
|
):
|
||
|
|
line.append("DEFAULT")
|
||
|
|
line.append(default)
|
||
|
|
elif default == "NULL":
|
||
|
|
line.append("DEFAULT")
|
||
|
|
line.append(default)
|
||
|
|
else:
|
||
|
|
line.append("DEFAULT")
|
||
|
|
line.append("'%s'" % default.replace("'", "''"))
|
||
|
|
if extra:
|
||
|
|
line.append(extra)
|
||
|
|
|
||
|
|
buffer.append(" ".join(line))
|
||
|
|
|
||
|
|
return "".join(
|
||
|
|
[
|
||
|
|
(
|
||
|
|
"CREATE TABLE %s (\n"
|
||
|
|
% self.preparer.quote_identifier(table_name)
|
||
|
|
),
|
||
|
|
",\n".join(buffer),
|
||
|
|
"\n) ",
|
||
|
|
]
|
||
|
|
)
|
||
|
|
|
||
|
|
def _parse_keyexprs(self, identifiers):
|
||
|
|
"""Unpack '"col"(2),"col" ASC'-ish strings into components."""
|
||
|
|
|
||
|
|
return self._re_keyexprs.findall(identifiers)
|
||
|
|
|
||
|
|
def _prep_regexes(self):
|
||
|
|
"""Pre-compile regular expressions."""
|
||
|
|
|
||
|
|
self._re_columns = []
|
||
|
|
self._pr_options = []
|
||
|
|
|
||
|
|
_final = self.preparer.final_quote
|
||
|
|
|
||
|
|
quotes = dict(
|
||
|
|
zip(
|
||
|
|
("iq", "fq", "esc_fq"),
|
||
|
|
[
|
||
|
|
re.escape(s)
|
||
|
|
for s in (
|
||
|
|
self.preparer.initial_quote,
|
||
|
|
_final,
|
||
|
|
self.preparer._escape_identifier(_final),
|
||
|
|
)
|
||
|
|
],
|
||
|
|
)
|
||
|
|
)
|
||
|
|
|
||
|
|
self._pr_name = _pr_compile(
|
||
|
|
r"^CREATE (?:\w+ +)?TABLE +"
|
||
|
|
r"%(iq)s(?P<name>(?:%(esc_fq)s|[^%(fq)s])+)%(fq)s +\($" % quotes,
|
||
|
|
self.preparer._unescape_identifier,
|
||
|
|
)
|
||
|
|
|
||
|
|
# `col`,`col2`(32),`col3`(15) DESC
|
||
|
|
#
|
||
|
|
self._re_keyexprs = _re_compile(
|
||
|
|
r"(?:"
|
||
|
|
r"(?:%(iq)s((?:%(esc_fq)s|[^%(fq)s])+)%(fq)s)"
|
||
|
|
r"(?:\((\d+)\))?(?: +(ASC|DESC))?(?=\,|$))+" % quotes
|
||
|
|
)
|
||
|
|
|
||
|
|
# 'foo' or 'foo','bar' or 'fo,o','ba''a''r'
|
||
|
|
self._re_csv_str = _re_compile(r"\x27(?:\x27\x27|[^\x27])*\x27")
|
||
|
|
|
||
|
|
# 123 or 123,456
|
||
|
|
self._re_csv_int = _re_compile(r"\d+")
|
||
|
|
|
||
|
|
# `colname` <type> [type opts]
|
||
|
|
# (NOT NULL | NULL)
|
||
|
|
# DEFAULT ('value' | CURRENT_TIMESTAMP...)
|
||
|
|
# COMMENT 'comment'
|
||
|
|
# COLUMN_FORMAT (FIXED|DYNAMIC|DEFAULT)
|
||
|
|
# STORAGE (DISK|MEMORY)
|
||
|
|
self._re_column = _re_compile(
|
||
|
|
r" "
|
||
|
|
r"%(iq)s(?P<name>(?:%(esc_fq)s|[^%(fq)s])+)%(fq)s +"
|
||
|
|
r"(?P<coltype>\w+)"
|
||
|
|
r"(?:\((?P<arg>(?:\d+|\d+,\d+|"
|
||
|
|
r"(?:'(?:''|[^'])*',?)+))\))?"
|
||
|
|
r"(?: +(?P<unsigned>UNSIGNED))?"
|
||
|
|
r"(?: +(?P<zerofill>ZEROFILL))?"
|
||
|
|
r"(?: +CHARACTER SET +(?P<charset>[\w_]+))?"
|
||
|
|
r"(?: +COLLATE +(?P<collate>[\w_]+))?"
|
||
|
|
r"(?: +(?P<notnull>(?:NOT )?NULL))?"
|
||
|
|
r"(?: +DEFAULT +(?P<default>"
|
||
|
|
r"(?:NULL|'(?:''|[^'])*'|[\-\w\.\(\)]+"
|
||
|
|
r"(?: +ON UPDATE [\-\w\.\(\)]+)?)"
|
||
|
|
r"))?"
|
||
|
|
r"(?: +(?:GENERATED ALWAYS)? ?AS +(?P<generated>\("
|
||
|
|
r".*\))? ?(?P<persistence>VIRTUAL|STORED)?)?"
|
||
|
|
r"(?: +(?P<autoincr>AUTO_INCREMENT))?"
|
||
|
|
r"(?: +COMMENT +'(?P<comment>(?:''|[^'])*)')?"
|
||
|
|
r"(?: +COLUMN_FORMAT +(?P<colfmt>\w+))?"
|
||
|
|
r"(?: +STORAGE +(?P<storage>\w+))?"
|
||
|
|
r"(?: +(?P<extra>.*))?"
|
||
|
|
r",?$" % quotes
|
||
|
|
)
|
||
|
|
|
||
|
|
# Fallback, try to parse as little as possible
|
||
|
|
self._re_column_loose = _re_compile(
|
||
|
|
r" "
|
||
|
|
r"%(iq)s(?P<name>(?:%(esc_fq)s|[^%(fq)s])+)%(fq)s +"
|
||
|
|
r"(?P<coltype>\w+)"
|
||
|
|
r"(?:\((?P<arg>(?:\d+|\d+,\d+|\x27(?:\x27\x27|[^\x27])+\x27))\))?"
|
||
|
|
r".*?(?P<notnull>(?:NOT )NULL)?" % quotes
|
||
|
|
)
|
||
|
|
|
||
|
|
# (PRIMARY|UNIQUE|FULLTEXT|SPATIAL) INDEX `name` (USING (BTREE|HASH))?
|
||
|
|
# (`col` (ASC|DESC)?, `col` (ASC|DESC)?)
|
||
|
|
# KEY_BLOCK_SIZE size | WITH PARSER name /*!50100 WITH PARSER name */
|
||
|
|
self._re_key = _re_compile(
|
||
|
|
r" "
|
||
|
|
r"(?:(?P<type>\S+) )?KEY"
|
||
|
|
r"(?: +%(iq)s(?P<name>(?:%(esc_fq)s|[^%(fq)s])+)%(fq)s)?"
|
||
|
|
r"(?: +USING +(?P<using_pre>\S+))?"
|
||
|
|
r" +\((?P<columns>.+?)\)"
|
||
|
|
r"(?: +USING +(?P<using_post>\S+))?"
|
||
|
|
r"(?: +KEY_BLOCK_SIZE *[ =]? *(?P<keyblock>\S+))?"
|
||
|
|
r"(?: +WITH PARSER +(?P<parser>\S+))?"
|
||
|
|
r"(?: +COMMENT +(?P<comment>(\x27\x27|\x27([^\x27])*?\x27)+))?"
|
||
|
|
r"(?: +/\*(?P<version_sql>.+)\*/ *)?"
|
||
|
|
r",?$" % quotes
|
||
|
|
)
|
||
|
|
|
||
|
|
# https://forums.mysql.com/read.php?20,567102,567111#msg-567111
|
||
|
|
# It means if the MySQL version >= \d+, execute what's in the comment
|
||
|
|
self._re_key_version_sql = _re_compile(
|
||
|
|
r"\!\d+ " r"(?: *WITH PARSER +(?P<parser>\S+) *)?"
|
||
|
|
)
|
||
|
|
|
||
|
|
# CONSTRAINT `name` FOREIGN KEY (`local_col`)
|
||
|
|
# REFERENCES `remote` (`remote_col`)
|
||
|
|
# MATCH FULL | MATCH PARTIAL | MATCH SIMPLE
|
||
|
|
# ON DELETE CASCADE ON UPDATE RESTRICT
|
||
|
|
#
|
||
|
|
# unique constraints come back as KEYs
|
||
|
|
kw = quotes.copy()
|
||
|
|
kw["on"] = "RESTRICT|CASCADE|SET NULL|NO ACTION"
|
||
|
|
self._re_fk_constraint = _re_compile(
|
||
|
|
r" "
|
||
|
|
r"CONSTRAINT +"
|
||
|
|
r"%(iq)s(?P<name>(?:%(esc_fq)s|[^%(fq)s])+)%(fq)s +"
|
||
|
|
r"FOREIGN KEY +"
|
||
|
|
r"\((?P<local>[^\)]+?)\) REFERENCES +"
|
||
|
|
r"(?P<table>%(iq)s[^%(fq)s]+%(fq)s"
|
||
|
|
r"(?:\.%(iq)s[^%(fq)s]+%(fq)s)?) +"
|
||
|
|
r"\((?P<foreign>[^\)]+?)\)"
|
||
|
|
r"(?: +(?P<match>MATCH \w+))?"
|
||
|
|
r"(?: +ON DELETE (?P<ondelete>%(on)s))?"
|
||
|
|
r"(?: +ON UPDATE (?P<onupdate>%(on)s))?" % kw
|
||
|
|
)
|
||
|
|
|
||
|
|
# CONSTRAINT `CONSTRAINT_1` CHECK (`x` > 5)'
|
||
|
|
# testing on MariaDB 10.2 shows that the CHECK constraint
|
||
|
|
# is returned on a line by itself, so to match without worrying
|
||
|
|
# about parenthesis in the expression we go to the end of the line
|
||
|
|
self._re_ck_constraint = _re_compile(
|
||
|
|
r" "
|
||
|
|
r"CONSTRAINT +"
|
||
|
|
r"%(iq)s(?P<name>(?:%(esc_fq)s|[^%(fq)s])+)%(fq)s +"
|
||
|
|
r"CHECK +"
|
||
|
|
r"\((?P<sqltext>.+)\),?" % kw
|
||
|
|
)
|
||
|
|
|
||
|
|
# PARTITION
|
||
|
|
#
|
||
|
|
# punt!
|
||
|
|
self._re_partition = _re_compile(r"(?:.*)(?:SUB)?PARTITION(?:.*)")
|
||
|
|
|
||
|
|
# Table-level options (COLLATE, ENGINE, etc.)
|
||
|
|
# Do the string options first, since they have quoted
|
||
|
|
# strings we need to get rid of.
|
||
|
|
for option in _options_of_type_string:
|
||
|
|
self._add_option_string(option)
|
||
|
|
|
||
|
|
for option in (
|
||
|
|
"ENGINE",
|
||
|
|
"TYPE",
|
||
|
|
"AUTO_INCREMENT",
|
||
|
|
"AVG_ROW_LENGTH",
|
||
|
|
"CHARACTER SET",
|
||
|
|
"DEFAULT CHARSET",
|
||
|
|
"CHECKSUM",
|
||
|
|
"COLLATE",
|
||
|
|
"DELAY_KEY_WRITE",
|
||
|
|
"INSERT_METHOD",
|
||
|
|
"MAX_ROWS",
|
||
|
|
"MIN_ROWS",
|
||
|
|
"PACK_KEYS",
|
||
|
|
"ROW_FORMAT",
|
||
|
|
"KEY_BLOCK_SIZE",
|
||
|
|
):
|
||
|
|
self._add_option_word(option)
|
||
|
|
|
||
|
|
self._add_option_regex("UNION", r"\([^\)]+\)")
|
||
|
|
self._add_option_regex("TABLESPACE", r".*? STORAGE DISK")
|
||
|
|
self._add_option_regex(
|
||
|
|
"RAID_TYPE",
|
||
|
|
r"\w+\s+RAID_CHUNKS\s*\=\s*\w+RAID_CHUNKSIZE\s*=\s*\w+",
|
||
|
|
)
|
||
|
|
|
||
|
|
_optional_equals = r"(?:\s*(?:=\s*)|\s+)"
|
||
|
|
|
||
|
|
def _add_option_string(self, directive):
|
||
|
|
regex = r"(?P<directive>%s)%s" r"'(?P<val>(?:[^']|'')*?)'(?!')" % (
|
||
|
|
re.escape(directive),
|
||
|
|
self._optional_equals,
|
||
|
|
)
|
||
|
|
self._pr_options.append(
|
||
|
|
_pr_compile(
|
||
|
|
regex, lambda v: v.replace("\\\\", "\\").replace("''", "'")
|
||
|
|
)
|
||
|
|
)
|
||
|
|
|
||
|
|
def _add_option_word(self, directive):
|
||
|
|
regex = r"(?P<directive>%s)%s" r"(?P<val>\w+)" % (
|
||
|
|
re.escape(directive),
|
||
|
|
self._optional_equals,
|
||
|
|
)
|
||
|
|
self._pr_options.append(_pr_compile(regex))
|
||
|
|
|
||
|
|
def _add_option_regex(self, directive, regex):
|
||
|
|
regex = r"(?P<directive>%s)%s" r"(?P<val>%s)" % (
|
||
|
|
re.escape(directive),
|
||
|
|
self._optional_equals,
|
||
|
|
regex,
|
||
|
|
)
|
||
|
|
self._pr_options.append(_pr_compile(regex))
|
||
|
|
|
||
|
|
|
||
|
|
_options_of_type_string = (
|
||
|
|
"COMMENT",
|
||
|
|
"DATA DIRECTORY",
|
||
|
|
"INDEX DIRECTORY",
|
||
|
|
"PASSWORD",
|
||
|
|
"CONNECTION",
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
def _pr_compile(regex, cleanup=None):
|
||
|
|
"""Prepare a 2-tuple of compiled regex and callable."""
|
||
|
|
|
||
|
|
return (_re_compile(regex), cleanup)
|
||
|
|
|
||
|
|
|
||
|
|
def _re_compile(regex):
|
||
|
|
"""Compile a string to regex, I and UNICODE."""
|
||
|
|
|
||
|
|
return re.compile(regex, re.I | re.UNICODE)
|
||
|
|
|
||
|
|
|
||
|
|
def _strip_values(values):
|
||
|
|
"Strip reflected values quotes"
|
||
|
|
strip_values = []
|
||
|
|
for a in values:
|
||
|
|
if a[0:1] == '"' or a[0:1] == "'":
|
||
|
|
# strip enclosing quotes and unquote interior
|
||
|
|
a = a[1:-1].replace(a[0] * 2, a[0])
|
||
|
|
strip_values.append(a)
|
||
|
|
return strip_values
|