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Contents
class String
# Returns a new string with all new lines removed from
# adjacent lines of text.
#
# s = "This is\na test.\n\nIt clumps\nlines of text."
# s.fold
#
# _produces_
#
# "This is a test.\n\nIt clumps lines of text. "
#
#--
# One possible flaw with this that might could use a fix:
# if the given string ends in a newline, it is replaced with
# a single space.
#++
def fold(ignore_indented=false)
ns = ''
i = 0
br = self.scan(/(\n\s*\n|\Z)/m) do |m|
b = $~.begin(1)
e = $~.end(1)
nl = $&
tx = slice(i...b)
if ignore_indented and slice(i...b) =~ /^[ ]+/
ns << tx
else
ns << tx.gsub(/[ ]*\n+/,' ')
end
ns << nl
i = e
end
ns
end
end
# _____ _
# |_ _|__ ___| |_
# | |/ _ \/ __| __|
# | | __/\__ \ |_
# |_|\___||___/\__|
#
=begin test
require 'test/unit'
class TCString < Test::Unit::TestCase
def test_fold_1
s = "This is\na test.\n\nIt clumps\nlines of text."
o = "This is a test.\n\nIt clumps lines of text."
assert_equal( o, s.fold )
end
def test_fold_2
s = "This is\na test.\n\n This is pre.\n Leave alone.\n\nIt clumps\nlines of text."
o = "This is a test.\n\n This is pre.\n Leave alone.\n\nIt clumps lines of text."
assert_equal( o, s.fold(true) )
end
end
=end
Version data entries
26 entries across 26 versions & 1 rubygems