Sha256: cb93c4407b28289000929e21329980ec3dfd6a5638531d19d3c146cf20520365
Contents?: true
Size: 1.54 KB
Versions: 5
Compression:
Stored size: 1.54 KB
Contents
class String
# Like #index but returns a Range.
#
# "This is a test!".range('test') #=> 10..13
#
# CREDIT: Trans
def range(s, offset=0)
if index(s, offset)
return ($~.begin(0))..($~.end(0)-1)
end
nil
end
# Like #index_all but returns an array of Ranges.
#
# "abc123abc123".range_all('abc') #=> [0..2, 6..8]
#
# TODO: Add offset, perhaps ?
#
# CREDIT: Trans
def range_all(s, reuse=false)
r = []; i = 0
while i < self.length
rng = range(s, i)
if rng
r << rng
i += reuse ? 1 : rng.end + 1
else
break
end
end
r.uniq
end
# Returns an array of ranges mapping
# the characters per line.
#
# "this\nis\na\ntest".range_of_line
# #=> [0..4, 5..7, 8..9, 10..13]
#
# CREDIT: Trans
def range_of_line
offset=0; charmap = []
self.each do |line|
charmap << (offset..(offset + line.length - 1))
offset += line.length
end
charmap
end
# Like index but returns an array of all index locations.
# The reuse flag allows the trailing portion of a match to be
# reused for subsquent matches.
#
# "abcabcabc".index_all('a') #=> [0,3,6]
#
# "bbb".index_all('bb', false) #=> [0]
# "bbb".index_all('bb', true) #=> [0,1]
#
# TODO: Culd probably be defined for Indexable in general too.
def index_all(s, reuse=false)
s = Regexp.new(Regexp.escape(s)) unless Regexp===s
ia = []; i = 0
while (i = index(s,i))
ia << i
i += (reuse ? 1 : $~[0].size)
end
ia
end
end
Version data entries
5 entries across 5 versions & 1 rubygems