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Contents
# encoding: utf-8
# String
class String
# surround string.
#
# ==== Options
#
# * <tt>:top_bottom</tt> - set top and bottom charactor
# * <tt>:side</tt> - set right and left charactor
#
# ==== Examples
#
# single line, no option case
#
# 'hoge'.surround
#
# result
#
# ------
# |hoge|
# ------
#
# multi line, no option case
#
# "hoge\na".surround
#
# result
#
# ------
# |hoge|
# |a |
# ------
#
# single line, both option case
#
# 'hoge'.surround top_bottom: '=', side: '!'
#
# result
#
# ======
# !hoge!
# ======
#
def surround(options = { top_bottom: '-', side: '|' })
top_bottom = init_top_bottom(options)
side = init_side(options)
inner_width = line_max
top_bottom = top_bottoms(top_bottom, inner_width)
ret = *each_line.reduce(["#{top_bottom}"]) { |ret, line|ret << "#{side}#{line.chomp.ljust(inner_width)}#{side}" }
ret.push("#{top_bottom}").join("\n")
end
private
def init_top_bottom(options)
options[:top_bottom].nil? ? '-' : options[:top_bottom]
end
def init_side(options)
options[:side].nil? ? '|' : options[:side]
end
def top_bottoms(top_bottom, inner_width)
top_bottom * (inner_width + 2)
end
def line_max
return 0 if self.empty?
each_line.max_by { |v|v.size }.chomp.size
end
end
Version data entries
112 entries across 112 versions & 1 rubygems