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Use fnmatch for filenameish glob parsing.

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This commit is contained in:
Eevee 2010-04-24 15:37:55 -07:00
parent 6106737465
commit 25c81541ae
1 changed files with 18 additions and 40 deletions
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58
pokedex/db/load.py
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@ -1,8 +1,8 @@
"""CSV to database or vice versa.""" """CSV to database or vice versa."""
import csv import csv
import fnmatch
import os.path import os.path
import pkg_resources import pkg_resources
import re
import sys import sys
from sqlalchemy.orm.attributes import instrumentation_registry from sqlalchemy.orm.attributes import instrumentation_registry
@ -13,36 +13,24 @@ from pokedex.db import metadata
import pokedex.db.tables as tables import pokedex.db.tables as tables
def _wildcard_char_to_regex(char): def _get_table_names(metadata, patterns):
"""Converts a single wildcard character to the regex equivalent.""" """Returns a list of table names from the given metadata. If `patterns`
exists, only tables matching one of the patterns will be returned.
if char == '?': """
return '.?' if patterns:
elif char == '*': table_names = set()
return '.*' for pattern in patterns:
else: if '.' in pattern or '/' in pattern:
return re.escape(char) # If it looks like a filename, pull out just the table name
_, filename = os.path.split(pattern)
def _wildcard_glob_to_regex(glob):
"""Converts a single wildcard glob to a regex STRING."""
# If it looks like a filename, make it not one
if '.' in glob or '/' in glob:
_, filename = os.path.split(glob)
table_name, _ = os.path.splitext(filename) table_name, _ = os.path.splitext(filename)
glob = table_name pattern = table_name
return u''.join(map(_wildcard_char_to_regex, glob)) table_names.update(fnmatch.filter(metadata.tables.keys(), pattern))
else:
def _wildcards_to_regex(strings): table_names = metadata.tables.keys()
"""Converts a list of wildcard globs to a single regex object."""
regex_parts = map(_wildcard_glob_to_regex, strings)
regex = '^(?:' + '|'.join(regex_parts) + ')$'
return re.compile(regex)
return list(table_names)
def _get_verbose_prints(verbose): def _get_verbose_prints(verbose):
"""If `verbose` is true, returns three functions: one for printing a """If `verbose` is true, returns three functions: one for printing a
@ -136,12 +124,7 @@ def load(session, tables=[], directory=None, drop_tables=False, verbose=False):
if not directory: if not directory:
directory = pkg_resources.resource_filename('pokedex', 'data/csv') directory = pkg_resources.resource_filename('pokedex', 'data/csv')
if tables: table_names = _get_table_names(metadata, tables)
regex = _wildcards_to_regex(tables)
table_names = filter(regex.match, metadata.tables.keys())
else:
table_names = metadata.tables.keys()
table_objs = [metadata.tables[name] for name in table_names] table_objs = [metadata.tables[name] for name in table_names]
table_objs = sqlalchemy.sql.util.sort_tables(table_objs) table_objs = sqlalchemy.sql.util.sort_tables(table_objs)
@ -295,12 +278,7 @@ def dump(session, tables=[], directory=None, verbose=False):
if not directory: if not directory:
directory = pkg_resources.resource_filename('pokedex', 'data/csv') directory = pkg_resources.resource_filename('pokedex', 'data/csv')
if tables: table_names = _get_table_names(metadata, tables)
regex = _wildcards_to_regex(tables)
table_names = filter(regex.match, metadata.tables.keys())
else:
table_names = metadata.tables.keys()
table_names.sort() table_names.sort()