问在rails中选择字符串的多个部分

EN

# escape double quotes
longstring = %q(bunchofotherstringstuffandcharacters"hisquote":"The most important aspect of the painting was the treatment of lighting.","lp":andthenalotmorestringandcharacters)

# split on double quotes
substrings = longstring.split("\"").to_enum

# somewhere to sure the strings you want
save = []

# use a rescue clause to detect that the enumerator 'substrings' as reached an end
begin
    while true do
        remember = substrings.next
        case substrings.peek # lets see if that next element is our deliminator
        when ":" # Once the semicolon is spotted ahead, grab the three strings we want.
            save << remember
            substrings.next # skip the ":"
            save << substrings.next
            substrings.next # skip the ","
            save << substrings.next
        end
    end
rescue StopIteration => e
    puts "End of Substring Enumeration was reached."
ensure
    puts save.inspect   #=>  ["hisquote", "The most important aspect of the painting was the treatment of lighting.", "lp"]
end