字節<0xC0字節<0x80

Question

有人能幫我理解這個Ruby腳本在做什麼嗎？

def clean_up dirty_text 
    newstr = "" 

    dirty_text.each_byte do |byte| 
    newstr << if byte < 0x80 
     byte.chr 
    elsif byte < 0xC0 
     "\xC2" + byte.chr 
    else 
     "\xC3" + (byte - 64).chr  
    end 
    end 

    newstr 
end 

Answer 1

這是將Latin-1轉碼爲UTF-8的一種十分詭異的方式。

"The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!)"