/usr/lib/ruby/vendor_ruby/indentation/string_mod.rb is in ruby-indentation 0.1.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Return an indented copy of this string
# Arguments:
# * num - How many of the specified indentation to use.
# Default for spaces is 2. Default for other is 1.
# If set to a negative value, removes that many of the specified indentation character,
# tabs, or spaces from the beginning of the string
# * i_char - Character (or string) to use for indentation
def indent(num = nil, i_char = ' ')
_indent(num, i_char)
end
# Indents this string
# Arguments:
# * num - How many of the specified indentation to use.
# Default for spaces is 2. Default for other is 1.
# If set to a negative value, removes that many of the specified indentation character,
# tabs, or spaces from the beginning of the string
# * i_char - Character (or string) to use for indentation
def indent!(num = nil, i_char = ' ')
replace(_indent(num, i_char))
end
# Split across newlines and return the fewest number of indentation characters found on each line
def find_least_indentation(options = {:ignore_blank_lines => true, :ignore_empty_lines => true})
# Cannot ignore empty lines unless we're also ignoring blank lines
options[:ignore_blank_lines] = options[:ignore_empty_lines] ? true : options[:ignore_blank_lines]
empty? ? 0 : split("\n", -1).reject{|line|
if options[:ignore_empty_lines]
line.strip.empty?
elsif options[:ignore_blank_lines]
line.empty?
else
false
end
}.collect{|substr| substr.match(/^[ \t]*/).to_s.length}.min
end
# Find the least indentation of all lines within this string and remove that amount (if any)
# Can pass an optional modifier that changes the indentation amount removed
def reset_indentation(modifier = 0)
indent(-find_least_indentation + modifier)
end
# Replaces the current string with one that has had its indentation reset
# Can pass an optional modifier that changes the indentation amount removed
def reset_indentation!(modifier = 0)
indent!(-find_least_indentation + modifier)
end
private
def _indent(num = nil, i_char = ' ')
# Define number of indentations to use
number = num
# Default number to 2 if spaces or 1 if other
number ||= (i_char == ' ') ? 2 : 1
case
when number >= 0
split("\n", -1).collect{|line| (i_char * number) + line}.join("\n")
else
i_regexp = Regexp.new("^([ \t]|#{i_char})")
split("\n", -1).collect do |line|
ret_str = String.new(line)
number.abs.times do
match = ret_str.sub!(i_regexp, '')
break unless match
end
ret_str
end.join("\n")
end
end
end
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