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Contents
# Original source code: https://raw.githubusercontent.com/alexch/rerun/master/lib/rerun/glob.rb
# License here: https://github.com/alexch/rerun/blob/master/LICENSE
#
# based on http://cpan.uwinnipeg.ca/htdocs/Text-Glob/Text/Glob.pm.html#glob_to_regex_string-
#
module Locomotive
module Wagon
class Glob
NO_LEADING_DOT = '(?=[^\.])' # todo
START_OF_FILENAME = '(\A|\/)' # beginning of string or a slash
END_OF_STRING = '\z'
def initialize(glob_string)
@glob_string = glob_string
end
def to_regexp_string
chars = @glob_string.split('')
chars = smoosh(chars)
START_OF_FILENAME + parse(chars) + END_OF_STRING
end
def to_regexp
Regexp.new(to_regexp_string)
end
def smoosh(chars)
[].tap do |out|
until chars.empty?
char = chars.shift
if char == "*" and chars.first == "*"
chars.shift
chars.shift if chars.first == "/"
out.push("**")
else
out.push(char)
end
end
end
end
protected
def parse(chars)
curlies, escaping = 0, false
chars.map do |char|
if escaping
escaping = false
char
else
case char
when '**' then "([^/]+/)*"
when '*' then ".*"
when "?" then "."
when "." then "\\."
when "{"
curlies += 1
"("
when "}"
if curlies > 0
curlies -= 1
")"
else
char
end
when ","
if curlies > 0
"|"
else
char
end
when "\\"
escaping = true
"\\"
else
char
end
end
end.join
end
end
end
end
Version data entries
32 entries across 32 versions & 1 rubygems