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subtitle, encoding problem
Terro_Girl
post 27 May, 2008 - 09:25 AM
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Joined: 27 May, 2008
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hello everyone .. i'm trying to modify a text in wich i want to replce some special characters with usual ones , but all i get are some other special characters (squares , question marks..)
my code looks like this :
CODE
  

void ApplyToFiles(string target)
        {
            string[] fnames;
            fnames = Directory.GetFiles(".",target);
            foreach (string fname in fnames)
            {
                FileInfo fi = new FileInfo(fname);
              
                StreamReader sr = null;
                StreamWriter sw = null;
                try
                {
                    sr = new StreamReader(new FileStream(fname, FileMode.Open, FileAccess.Read), Encoding.UTF8);
                    sw = new StreamWriter(new FileStream("NEW" + fi.Name, FileMode.Create), Encoding.UTF8);
                    Console.SetOut(sw);
                    
                    String line = "";
                    while ((line = sr.ReadLine()) != null)
                    {
                        string nLine = Regex.Replace(line, "º", "s");
                        nLine = Regex.Replace(line, "ª", "S");

                        Console.Out.WriteLine(nLine);
                    }
                }
                finally
                {
                    sr.Close();
                   Console.Out.Close();

                }



the code works only on normal characters (for example , it replaces "a" with "b") .. i've tryed all the possible encodings but yet no result .. any ideeas ?
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crcapps
post 28 May, 2008 - 12:01 PM
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Posts: 53


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I am guessing that you will need to use the unicode values of the character in question, rather than the character itself.

QUOTE(Terro_Girl @ 27 May, 2008 - 10:25 AM) *

hello everyone .. i'm trying to modify a text in wich i want to replce some special characters with usual ones , but all i get are some other special characters (squares , question marks..)
my code looks like this :
CODE
  

void ApplyToFiles(string target)
        {
            string[] fnames;
            fnames = Directory.GetFiles(".",target);
            foreach (string fname in fnames)
            {
                FileInfo fi = new FileInfo(fname);
              
                StreamReader sr = null;
                StreamWriter sw = null;
                try
                {
                    sr = new StreamReader(new FileStream(fname, FileMode.Open, FileAccess.Read), Encoding.UTF8);
                    sw = new StreamWriter(new FileStream("NEW" + fi.Name, FileMode.Create), Encoding.UTF8);
                    Console.SetOut(sw);
                    
                    String line = "";
                    while ((line = sr.ReadLine()) != null)
                    {
                        string nLine = Regex.Replace(line, "º", "s");
                        nLine = Regex.Replace(line, "ª", "S");

                        Console.Out.WriteLine(nLine);
                    }
                }
                finally
                {
                    sr.Close();
                   Console.Out.Close();

                }



the code works only on normal characters (for example , it replaces "a" with "b") .. i've tryed all the possible encodings but yet no result .. any ideeas ?
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Martyr2
post 28 May, 2008 - 10:20 PM
Post #3


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crcapps is on the right track. You will have to use the unicode value or its class as part of the regular expression pattern like so...

The symbol "¶" which represents a paragraph in formal writing is the value "182" or "00B6" in hexidecimal format. To find these character values you can look in any unicode chart which you can find at a site like Unicode.org. Once you find the hex value, you can specify the value in the regular expression as the format "\u00B6". Here is an example of how this would look for a classic string...

csharp

// Create our regular expression object with the unicode character 00B6 which
// is the value for a paragraph symbol
Regex r = new Regex("\u00B6");

// Using the regular expression replace function, we provide our string and its
// replacement. This results in the location of the paragraph character and replacing
// it with the letter "s"
MessageBox.Show(r.Replace("te¶t","s"));


Our example locates the paragraph character and replaces it with the letter "s". To replace various characters like this you could construct an array of unicode chars, or if the characters belong to a certain set like arabic you can use the "\p" escape sequence to outline the set. Read more about that at the link below...

Regular Expressions Tutorial - Unicode Characters

Hope that helps you solve the problem. If you enjoyed this answer, please be sure to try out our new experimental thumbs up feature located at the bottom of this posting. Thanks! smile.gif
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