How to remove strange characters

ruby-talk
1

Hi all,

I grap some info from a webpage. Sometimes I get some stranges
characters as follows (by p):
To depart in a hurry; abscond: \342\200\234Your horse
has\nabsquatulated!\342\200\235 (Robert M. Bird) To die.

or (by print):
To depart in a hurry; abscond: “Your horse has absquatulated!”
(Robert M. Bird) To die.

Any idea to to get rid of them?

Thanks,

Li

···

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2

Hi,

I grap some info from a webpage. Sometimes I get some stranges
characters as follows (by p):
To depart in a hurry; abscond: \342\200\234Your horse
has\nabsquatulated!\342\200\235 (Robert M. Bird) To die.

or (by print):
To depart in a hurry; abscond: “Your horse has absquatulated!â€
(Robert M. Bird) To die.

Any idea to to get rid of them?

Those are multi-byte characters (curly quotes, in this case). You
probably don't want to get rid of them, but you can use the iconv
library to transliterate them back to their ASCII almost-equivalents:

string = "To depart in a hurry; abscond: \342\200\234Your horse has\nabsquatulated!\342\200\235 (Robert M. Bird) To die."

=> "To depart in a hurry; abscond: \342\200\234Your horse
has\nabsquatulated!\342\200\235 (Robert M. Bird) To die."

require 'iconv'

=> true

puts Iconv.iconv('ascii//translit', 'utf-8', string).to_s

To depart in a hurry; abscond: "Your horse has
absquatulated!" (Robert M. Bird) To die.
=> nil

Stephen

···

On Tue, Oct 7, 2008 at 11:28 AM, Li Chen <chen_li3@yahoo.com> wrote:

3

Li Chen wrote:

Hi all,

I grap some info from a webpage. Sometimes I get some stranges
characters as follows (by p):
To depart in a hurry; abscond: \342\200\234Your horse
has\nabsquatulated!\342\200\235 (Robert M. Bird) To die.

Here's a quick hack I used recently. It was messing my display on
ncurses, and I did not need the characters.

dataitem.gsub!(/[^[:space:][:print:]]/,'')

I got this while googling, iirc, its used somewhere in ROR.

···

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Posted via http://www.ruby-forum.com/\.

4

Stephen Celis wrote:

Those are multi-byte characters (curly quotes, in this case). You
probably don't want to get rid of them, but you can use the iconv
library to transliterate them back to their ASCII almost-equivalents:

string = "To depart in a hurry; abscond: \342\200\234Your horse has\nabsquatulated!\342\200\235 (Robert M. Bird) To die."

=> "To depart in a hurry; abscond: \342\200\234Your horse
has\nabsquatulated!\342\200\235 (Robert M. Bird) To die."

require 'iconv'

=> true

puts Iconv.iconv('ascii//translit', 'utf-8', string).to_s

To depart in a hurry; abscond: "Your horse has
absquatulated!" (Robert M. Bird) To die.
=> nil

Stephen

Thank you,

Li

···

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Posted via http://www.ruby-forum.com/\.

5

Nit Khair wrote:

Here's a quick hack I used recently. It was messing my display on
ncurses, and I did not need the characters.

dataitem.gsub!(/[^[:space:][:print:]]/,'')

I got this while googling, iirc, its used somewhere in ROR.

It works on scenario where iconv doesn't work. Good job!!!

Li

···

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6

Hi Stephen and others,

Iconv only works for some characters. It doesn't work for the following
scripts.

Any idea?

Thanks,

Li

C:\Users\Alex>irb
irb(main):001:0> require 'iconv'
=> true
irb(main):002:0> string1="Fatal injury or ruin:\223Hath some fond lover
tic'd thee to thy bane?\224
\342\200\246"
=> "Fatal injury or ruin:\223Hath some fond lover tic'd thee to thy
bane?\224\342\200\246"
irb(main):003:0> puts
Iconv.iconv('ASCII//TRANSLIT','utf-8',string1).to_s
Iconv::IllegalSequence: "\223Hath some fond "...
        from (irb):3:in `iconv'
        from (irb):3
irb(main):004:0>

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7

There is no one-click installer for 1.9 on Windows as far as I can tell. Downloading and unpacking the ziped binaries didn't get me very far as both ruby and irb complain that something is missing. Does binary distribution require me to install anything else? Like libraries? If this is the case what additional stuff do I need to make 1.9 to work and where can I get it?

Thanks,
Alex

8

what do you think doing something like this?

class String
  def remove_nonascii(replacement)
    n=self.split("")
    self.slice!(0..self.size)
    n.each{|b|
      if (b[0].to_i< 32 || b[0].to_i>124) then
        self.concat(replacement)
      elsif
[34,35,37,42,43,44,45,47,60,61,62,63,91,92,93,94,96,123].include?(b[0].to_i)
        self.concat(replacement)
      else
        self.concat(b)
      end
    }
    self.to_s
  end
end

"Fatal injury or ruin:\223Hath some fond lover tic'd thee to
thybane?\224\342\200\246".remove_nonascii('+')

=> "Fatal injury or ruin:+Hath some fond lover tic'd thee to thybane+++++"

how you can see, it made the replacement with char '+'.

···

2008/10/8 Li Chen <chen_li3@yahoo.com>

Hi Stephen and others,

Iconv only works for some characters. It doesn't work for the following
scripts.

Any idea?

Thanks,

Li

C:\Users\Alex>irb
irb(main):001:0> require 'iconv'
=> true
irb(main):002:0> string1="Fatal injury or ruin:\223Hath some fond lover
tic'd thee to thy bane?\224
\342\200\246"
=> "Fatal injury or ruin:\223Hath some fond lover tic'd thee to thy
bane?\224\342\200\246"
irb(main):003:0> puts
Iconv.iconv('ASCII//TRANSLIT','utf-8',string1).to_s
Iconv::IllegalSequence: "\223Hath some fond "...
       from (irb):3:in `iconv'
       from (irb):3
irb(main):004:0>

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--
Pablo Q.