Regular Expressions

Marco Bertschi wrote:

second key can contain an escaped \=

Kornfeld Eliyahu Peter wrote:

Are you sure - isn't it 'second value'?

Kornfeld Eliyahu Peter wrote:

What the separator between one key-value pair to the other?

Kornfeld Eliyahu Peter wrote:

But space also can be in the value part, but not in the key part - Am I right?

Kornfeld Eliyahu Peter wrote:

.NET only extension

^((\\b[^\\s=]+)=(([^=]|\\\\=)+))*$

^((?<key>\b[^\s=]+)=(?<value>([^=]|\\=)+))+$

(\w+(?=\=))|((?<!\\)(?<=\=)(.+?)((?=(\s\w+\=))|$))

([\x20-\x7e])

set
{
    host = Regex.Replace(value, @"[^\x20-\x7e]", string.Empty);
}

set
{
    if (!string.IsNullOrEmpty(value))
    {
        char[] validChars = new char[value.Length];
        int validCharIndex = 0;
        
        foreach (char c in value)
        {
            if ('\x20' <= c && c <= '\x7e')
            {
                validChars[validCharIndex] = c;
                validCharIndex++;
            }
        }
        
        if (validCharIndex == 0)
        {
            value = string.Empty;
        }
        else if (validCharIndex != value.Length)
        {
            value = new string(validChars, 0, validCharIndex);
        }
    }
    
    host = value;
}