Help in Ruby Programming.

Create a Ruby definition which adds some small methods to the standard String and Array classes which might be of some use in writing a program to generate HTML output. The methods are:

String#hesc

Add the hesc method to the String class. It takes no arguments, and returns a copy of the string with each of the characters and & replaced with their appropriate HTML entities. For instance,

"I like less-than (

returns the string

"I like less-than (

String#tag

Add the tag method to the String class. It takes one argument, which is a string giving an HTML tag. The tag method returns a new string, constructed of the argument surrounded by angle brackets, and followed by the first word of the argument as a closing tag, leading with . Between is the original string after processing through hesc. For instance, "foo".tag("i"); returns the string foo. The purpose of the first word of the argument rule is to produce a correct closing tag when the tag includes attributes. The word is delimited by spaces. For instance,

"The Many Uses Of &".tag("h1 color=\"blue\"")

will return

The Many Uses Of &

Array#tag

This simply returns a copy of the array with tag applied to each member.

Array#nest

This takes a single argument which is a tag under the same rules as String#tag. It returns a copy of the string, with opening and closing tags added to the front and back. (The added tags are strings.)

Place your Ruby code in a file which can be brought in with load.

For instance here how the output should look like I have attached picture also and in I wrote it too both are same.

OUTPUT

--------------------------------------------------------------------------------------------------------------------------------------------------

irb(main):001:0> load "htmlgen.rb"

=> true

irb(main):002:0> "a

=> "a

irb(main):003:0> "a

=> "a

irb(main):004:0> ["a","b","c","d"].tag("i")

=> ["a", "b", "c", "d"]

irb(main):005:0> ["a","b","c","d"].tag("i").nest("tr id=\"foo\"")

=> ["", "a", "b", "c", "d", ""]

irb(main):006:0> ("1".."10").to_a.tag("td").nest("tr").join

=> "12345678910"

irb(main):007:0> ["al","bill","sally","joe"].tag('div color="blue"').nest("div")

=> ["

", "

al

", "

bill

", "

sally

", "

joe

", "

"]

irb(main):008:0> ["a","b","c"].nest("a href=\"nowhere\"")

=> ["", "a", "b", "c", ""]

--------------------------------------------------------------------------------------------------------------

OUTPUT in PICTURE

irb(main):001:0> load "htmlgen.rb" => true irb(main):002:0> "a "a "a "a " irb(main):004:0> ["a", "b","c","d"].tag("i") => ["a", "", "c", "d"] irb(main):005:0> ["a", "b","c","d"].tag("i").nest("tr id=\"foo\"") => ["", "a", "b", "c", "d", ""] irb(main):006:0> ("1".."10").to_a.tag("td").nest("tr").join => "12345678910" irb (main): 007:0> ["al","bill","sally","joe"].tag('div color="blue"').nest("div") => ["

", "

al

", "

bill

", "

sally

", "

joe

", "

" ] |irb(main): 008:0> ["a", "b","c"].nest("a href=\"nowhere."") 1 => ["", "a", "b", "c", ""] irb(main):001:0> load "htmlgen.rb" => true irb(main):002:0> "a "a "a "a " irb(main):004:0> ["a", "b","c","d"].tag("i") => ["a", "", "c", "d"] irb(main):005:0> ["a", "b","c","d"].tag("i").nest("tr id=\"foo\"") => ["", "a", "b", "c", "d", ""] irb(main):006:0> ("1".."10").to_a.tag("td").nest("tr").join => "12345678910" irb (main): 007:0> ["al","bill","sally","joe"].tag('div color="blue"').nest("div") => ["

", "

al

", "

bill

", "

sally

", "

joe

", "

" ] |irb(main): 008:0> ["a", "b","c"].nest("a href=\"nowhere."") 1 => ["", "a", "b", "c", ""]