def ExtendedRegexEscape(s):
# type: (str) -> str
"""
Quoted parts need to be regex-escaped when quoted, e.g. [[ $a =~ "{" ]]. I
don't think libc has a function to do this. Escape these characters:
https://www.gnu.org/software/sed/manual/html_node/ERE-syntax.html
"""
return pyutil.BackslashEscape(s, ERE_META_CHARS)
def EreCharClassEscape(s):
# type: (str) -> str
# \ is escaping
# ^ would invert it at the front,
# - is range
#
# ] would close it -- but there is a weird posix rule where it has to be put
# FIRST. Like []abc].
return pyutil.BackslashEscape(s, r'\^-')
def ShellQuoteB(s):
# type: (str) -> str
"""Quote by adding backslashes.
Used for autocompletion, so it's friendlier for display on the command line.
We use the strategy above for other use cases.
"""
# There's no way to escape a newline! Bash prints ^J for some reason, but
# we're more explicit. This will happen if there's a newline on a file
# system or a completion plugin returns a newline.
# NOTE: tabs CAN be escaped with \.
s = s.replace('\r', '<INVALID CR>').replace('\n', '<INVALID NEWLINE>')
# ~ for home dir
# ! for history
# * [] ? for glob
# {} for brace expansion
# space because it separates words
return pyutil.BackslashEscape(s, ' `~!$&*()[]{}\\|;\'"<>?')
def Escape(self, s):
# type: (str) -> str
# Note the characters here are DYNAMIC, unlike other usages of
# BackslashEscape().
return pyutil.BackslashEscape(s, self.escape_chars)
def GlobEscape(s):
# type: (str) -> str
"""
For SingleQuoted, DoubleQuoted, and EscapedLiteral
"""
return pyutil.BackslashEscape(s, GLOB_META_CHARS)