/usr/lib/python2.7/dist-packages/bashate/bashate.py is in python-bashate 0.3.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 | #!/usr/bin/env python
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import argparse
import fileinput
import re
import sys
def not_continuation(line):
return not re.search('\\\\$', line)
def check_for_do(line, report):
if not_continuation(line):
match = re.match('^\s*(for|while|until)\s', line)
if match:
operator = match.group(1).strip()
if operator == "for":
# "for i in ..." and "for ((" is bash, but
# "for (" is likely from an embedded awk script,
# so skip it
if re.search('for \([^\(]', line):
return
if not re.search(';\s*do(\b|$)', line):
report.print_error(('E010: Do not on same line as %s' %
operator), line)
def check_if_then(line, report):
if not_continuation(line):
if re.search('^\s*(el)?if \[', line):
if not re.search(';\s*then(\b|$)', line):
report.print_error('E011: Then keyword is not on same line '
'as if or elif keyword', line)
def check_no_trailing_whitespace(line, report):
if re.search('[ \t]+$', line):
report.print_error('E001: Trailing Whitespace', line)
def check_indents(line, report):
m = re.search('^(?P<indent>[ \t]+)', line)
if m:
if re.search('\t', m.group('indent')):
report.print_error('E002: Tab indents', line)
if (len(m.group('indent')) % 4) != 0:
report.print_error('E003: Indent not multiple of 4', line)
def check_function_decl(line, report):
failed = False
if line.startswith("function"):
if not re.search('^function [\w-]* \{$', line):
failed = True
else:
# catch the case without "function", e.g.
# things like '^foo() {'
if re.search('^\s*?\(\)\s*?\{', line):
failed = True
if failed:
report.print_error('E020: Function declaration not in format '
'"^function name {$"', line)
def starts_multiline(line):
m = re.search("[^<]<<\s*(?P<token>\w+)", line)
if m:
return m.group('token')
else:
return False
def end_of_multiline(line, token):
if token:
return re.search("^%s\s*$" % token, line) is not None
return False
def check_arithmetic(line, report):
if "$[" in line:
report.print_error('E041: Arithmetic expansion using $[ '
'is deprecated for $((', line)
class BashateRun(object):
def __init__(self):
# TODO(mrodden): rename these to match convention
self.ERRORS = 0
self.IGNORE = None
def register_ignores(self, ignores):
if ignores:
self.IGNORE = '^(' + '|'.join(ignores.split(',')) + ')'
def should_ignore(self, error):
return self.IGNORE and re.search(self.IGNORE, error)
def print_error(self, error, line,
filename=None, filelineno=None):
if self.should_ignore(error):
return
if not filename:
filename = fileinput.filename()
if not filelineno:
filelineno = fileinput.filelineno()
self.ERRORS = self.ERRORS + 1
self.log_error(error, line, filename, filelineno)
def log_error(self, error, line, filename, filelineno):
print("%s: '%s'" % (error, line.rstrip('\n')))
print(" - %s : L%s" % (filename, filelineno))
def check_files(self, files, verbose):
in_multiline = False
multiline_start = 0
multiline_line = ""
logical_line = ""
token = False
prev_file = None
prev_line = ""
prev_lineno = 0
# NOTE(mrodden): magic; replace with proper
# report class when necessary
report = self
for fname in files:
for line in fileinput.input(fname):
if fileinput.isfirstline():
# if in_multiline when the new file starts then we didn't
# find the end of a heredoc in the last file.
if in_multiline:
report.print_error(
'E012: heredoc did not end before EOF',
multiline_line,
filename=prev_file,
filelineno=multiline_start)
in_multiline = False
# last line of a previous file should always end with a
# newline
if prev_file and not prev_line.endswith('\n'):
report.print_error(
'E004: file did not end with a newline',
prev_line,
filename=prev_file,
filelineno=prev_lineno)
prev_file = fileinput.filename()
if verbose:
print("Running bashate on %s" % fileinput.filename())
# NOTE(sdague): multiline processing of heredocs is interesting
if not in_multiline:
logical_line = line
token = starts_multiline(line)
if token:
in_multiline = True
multiline_start = fileinput.filelineno()
multiline_line = line
continue
else:
logical_line = logical_line + line
if not end_of_multiline(line, token):
continue
else:
in_multiline = False
# Don't run any tests on comment lines
if logical_line.lstrip().startswith('#'):
prev_line = logical_line
prev_lineno = fileinput.filelineno()
continue
# Strip trailing comments. From bash:
#
# a word beginning with # causes that word and all
# remaining characters on that line to be ignored.
# ...
# A character that, when unquoted, separates
# words. One of the following: | & ; ( ) < > space
# tab
#
# for simplicity, we strip inline comments by
# matching just '<space>#'.
ll_split = logical_line.split(' #', 1)
if len(ll_split) > 1:
logical_line = ll_split[0].rstrip()
check_no_trailing_whitespace(logical_line, report)
check_indents(logical_line, report)
check_for_do(logical_line, report)
check_if_then(logical_line, report)
check_function_decl(logical_line, report)
check_arithmetic(logical_line, report)
prev_line = logical_line
prev_lineno = fileinput.filelineno()
def main():
parser = argparse.ArgumentParser(
description='A bash script style checker')
parser.add_argument('files', metavar='file', nargs='*',
help='files to scan for errors')
parser.add_argument('-i', '--ignore', help='Rules to ignore')
parser.add_argument('-v', '--verbose', action='store_true', default=False)
opts = parser.parse_args()
files = opts.files
if not files:
parser.print_usage()
return 1
run = BashateRun()
run.register_ignores(opts.ignore)
try:
run.check_files(files, opts.verbose)
except IOError as e:
print("bashate: %s" % e)
return 1
if run.ERRORS > 0:
print("%d bashate error(s) found" % run.ERRORS)
return 1
else:
return 0
if __name__ == "__main__":
sys.exit(main())
|