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#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE
#
# Copyright (c) 2014, Joyent, Inc.
#
'''
Process our ignore/exception_list file format.
The format is broadly similar, if not identical, to .gitignore and .hgignore
files.
'''
import re
import fnmatch
RE_SYNTAX = re.compile(r'^syntax:\s*(.*)\s*$')
#
# It is important that this module not rely on Mercurial
#
def _read_ignore_file(ignorefile):
'''Read an ignore file and return an array of regular expressions
to match ignored paths.'''
syntax = 'regex'
ignore_list = []
lc = 0
with open(ignorefile, 'r') as f:
for l in f:
lc += 1
# Remove comments and blank lines
l = l.split('#', 2)[0].strip()
if l == '':
continue
# Process "syntax:" lines
m = RE_SYNTAX.match(l)
if m:
syntax = m.group(1)
continue
# All other lines are considered patterns
if (syntax == 'glob'):
ignore_list.append(re.compile('.*' + fnmatch.translate(l)))
elif (syntax == 'regex'):
ignore_list.append(re.compile(l))
else:
raise Exception('%s:%d: syntax "%s" is not supported' %
(ignorefile, lc, syntax))
return ignore_list
def ignore(root, ignorefiles):
# If we aren't provided any ignore files, we'll never ignore
# any paths:
if (len(ignorefiles) < 1):
return lambda x: False
ignore_list = []
for ignorefile in ignorefiles:
ignore_list.extend(_read_ignore_file(ignorefile))
# If the ignore files contained no patterns, we'll never ignore
# any paths:
if (len(ignore_list) < 1):
return lambda x: False
def _ignore_func(path):
for regex in ignore_list:
if (regex.match(path)):
return True
return False
return _ignore_func
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