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Versions: 14
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Stored size: 1.45 KB
Contents
module Eco
class CLI
class Config
module Help
def help(*args)
raise "this needs to be reimplemented in the child class and return a string"
end
private
def keys_max_len(keys)
keys.max {|a, b| a.length <=> b.length}.length
end
# Creatas a well aligned line
def help_line(key, desc, keys_max_len = key.length, line_len = 100)
blanks = keys_max_len + 3 - key.length
blanks = blanks < 0 ? 0 : blanks
top_line = " #{key}#{" "*blanks} "
indent = top_line.length
first = true
each_slice_words(desc, line_len - indent).each_with_object([]) do |line, lines|
lines << (first ? "#{top_line}#{line}" : "#{" " * indent}#{line}")
first = false
end.join("\n")
end
def each_slice_words(str, max_len = 100)
liner = ""
str.to_s.scan(/[^\s]+|\s+/).each_with_object([]) do |part, out|
if "#{liner}#{part}".length <= max_len
liner << part
else
yield(liner) if block_given?
out << liner
liner = part.strip
end
end.tap do |out|
if out.empty? || !liner.empty?
yield(liner) if block_given?
out << liner if liner
end
end
end
end
end
end
end
Version data entries
14 entries across 14 versions & 1 rubygems