в 15:31, 26 мая 2010

2010-05-26T15:31:19Z

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2010-05-26T11:43:22Z

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==Define multiline patterns==

<source lang="csharp">
using System;
using System.Text.RegularExpressions;
public class EntryPoint
{
static void Main( string[] args ) {
// Create regex to search for IP address pattern.
string pattern = @"
# First part match
([01]?\d\d?
# OR
|2[0-4]\d
# OR
|25[0-5])
\.
# REPEAT
([01]?\d\d?|2[0-4]\d|25[0-5])\.
# REPEAT
([01]?\d\d?|2[0-4]\d|25[0-5])\.
# REPEAT
([01]?\d\d?|2[0-4]\d|25[0-5])
";
Regex regex = new Regex( pattern,
RegexOptions.IgnorePatternWhitespace );
Match match = regex.Match( "192.168.169.1" );
while( match.Success ) {
Console.WriteLine( "IP Address found at {0} with " +
"value of {1}",
match.Index,
match.Value );
match = match.NextMatch();
}

}
}

</source>

==Is Match successful==

<source lang="csharp">
using System;
using System.Text.RegularExpressions;
public class EntryPoint
{
static void Main( string[] args ) {
// Create regex to search for IP address pattern.
string pattern = @"([01]?\d\d?|2[0-4]\d|25[0-5])\." +
@"([01]?\d\d?|2[0-4]\d|25[0-5])\." +
@"([01]?\d\d?|2[0-4]\d|25[0-5])\." +
@"([01]?\d\d?|2[0-4]\d|25[0-5])";
Regex regex = new Regex( pattern );
Match match = regex.Match( "192.168.169.1" );
while( match.Success ) {
Console.WriteLine( "IP Address found at {0} with " +
"value of {1}",
match.Index,
match.Value );
Console.WriteLine( "Groups are:" );
foreach( Group g in match.Groups ) {
Console.WriteLine( "\t{0} at {1}",
g.Value,
g.Index );
}
match = match.NextMatch();
}
}
}

</source>

==MatchEvaluator: Entry Point IP Reverse==

<source lang="csharp">
using System;
using System.Text;
using System.Text.RegularExpressions;
public class EntryPoint
{
static void Main( string[] args ) {
// Create regex to search for IP address pattern.
string pattern = @"(?<part1>[01]?\d\d?|2[0-4]\d|25[0-5])\." +
@"(?<part2>[01]?\d\d?|2[0-4]\d|25[0-5])\." +
@"(?<part3>[01]?\d\d?|2[0-4]\d|25[0-5])\." +
@"(?<part4>[01]?\d\d?|2[0-4]\d|25[0-5])";
Regex regex = new Regex( pattern );
Match match = regex.Match( "192.168.169.1" );
MatchEvaluator eval = new MatchEvaluator(EntryPoint.IPReverse );
Console.WriteLine( regex.Replace("192.168.169.1", eval) );
}
static string IPReverse( Match match ) {
Console.WriteLine( match.Groups["part4"] + "." );
Console.WriteLine( match.Groups["part3"] + "." );
Console.WriteLine( match.Groups["part2"] + "." );
Console.WriteLine( match.Groups["part1"] );
return "";
}
}

</source>

==Match Groups==

<source lang="csharp">
using System;
using System.Text.RegularExpressions;
public class EntryPoint
{
static void Main( string[] args ) {
// Create regex to search for IP address pattern.
string pattern = @"(?<part1>[01]?\d\d?|2[0-4]\d|25[0-5])\." +
@"(?<part2>[01]?\d\d?|2[0-4]\d|25[0-5])\." +
@"(?<part3>[01]?\d\d?|2[0-4]\d|25[0-5])\." +
@"(?<part4>[01]?\d\d?|2[0-4]\d|25[0-5])";
Regex regex = new Regex( pattern );
Match match = regex.Match( "192.168.169.1" );
while( match.Success ) {
Console.WriteLine( "IP Address found at {0} with " +
"value of {1}",
match.Index,
match.Value );
Console.WriteLine( "Groups are:" );
Console.WriteLine( "\tPart 1: {0}",
match.Groups["part1"] );
Console.WriteLine( "\tPart 2: {0}",
match.Groups["part2"] );
Console.WriteLine( "\tPart 3: {0}",
match.Groups["part3"] );
Console.WriteLine( "\tPart 4: {0}",
match.Groups["part4"] );
match = match.NextMatch();
}

}
}

</source>

==Match IP address pattern and print out the index==

<source lang="csharp">
using System;
using System.Text.RegularExpressions;
public class EntryPoint
{
static void Main( string[] args ) {
// Create regex to search for IP address pattern.
string pattern = @"([01]?\d\d?|2[0-4]\d|25[0-5])\." +
@"([01]?\d\d?|2[0-4]\d|25[0-5])\." +
@"([01]?\d\d?|2[0-4]\d|25[0-5])\." +
@"([01]?\d\d?|2[0-4]\d|25[0-5])";
Regex regex = new Regex( pattern );
Match match = regex.Match( "192.169.168.1" );
while( match.Success ) {
Console.WriteLine( "IP Address found at {0} with " +
"value of {1}",
match.Index,
match.Value );
match = match.NextMatch();
}

}
}

</source>

==Use regular to search an IP address==

<source lang="csharp">
using System;
using System.Text.RegularExpressions;
public class EntryPoint
{
static void Main( string[] args ) {
// Create regex to search for IP address pattern.
string pattern = @"\d\d?\d?\.\d\d?\d?\.\d\d?\d?\.\d\d?\d?";
Regex regex = new Regex( pattern );
Match match = regex.Match( "192.168.169.1" );
while( match.Success ) {
Console.WriteLine( "IP Address found at {0} with " +
"value of {1}",
match.Index,
match.Value );
match = match.NextMatch();
}

}
}

</source>

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в 15:31, 26 мая 2010

Admin: 1 версия