.NET ComponentModel.DataAnnotations issue with RegularExpression attribute - regex

I have to validate a string that's supposed to contain an hour number (e.g. 00 to 23).
I hence set an annotation like:
[RegularExpression("[01]?[0-9]|2[0-3]", ErrorMessage = "Error")]
public string JobStartHour {...}
Unfortunately, this regex doesn't match the inputs from 20 to 23, as it's supposed to do (IMHO).
Doesn't this RegularExpression attribute use the plain old Regex.IsMatch ?
Regex.IsMatch("22", "[01]?[0-9]|2[0-3]")
returns true...
Edit: I know, using a string isn't the best idea so as to store a number, nevertheless, this regex issue is annoying.

This pattern will work. I ran into the same thing. It has to do with using parens to correctly establish the groupings. If the RegExAttribute can't figure it out, it seems to just quit at the pipe symbol.
Here's a unit test.
[TestMethod]
public void CheckHours()
{
var pattern = "([0-1][0-9])|(2[0-3])|([0-9])";
int cnt = 0;
var hours = new string[]
{ "1","2","3","4","5","6","7","8","9",
"01","02","03","04","05","06","07","08","09",
"10","11","12","13","14","15","16","17","18","19",
"20","21","22","23" };
var attribute = new RegularExpressionAttribute(pattern);
bool isMatchOk = false;
bool isAttrOk = false;
foreach (var hour in hours)
{
isMatchOk = System.Text.RegularExpressions.Regex.IsMatch(hour, pattern);
isAttrOk = attribute.IsValid(hour);
if (isMatchOk & isAttrOk)
{ cnt += 1; }
else
{ Debug.WriteLine(hour + " / "
+ isMatchOk.ToString() + " / "
+ isAttrOk.ToString()); }
}
Assert.AreEqual(32, cnt);
}

Try this:
[RegularExpression("2[0-3]|[01]?[0-9]", ErrorMessage = "Error")]
public string JobStartHour {...}

Don't know why this regex isn't correctly interpreted, but a solution is to implement a CustomValidation, which is pretty handy.
[CustomValidation(typeof(MyCustomValidation), "Validate24Hour")]
public string JobStartHour {...}
...
public class MyCustomValidation
{
public static ValidationResult Validate24Hour(string candidate)
{
bool isValid = false;
...
if (isValid)
{
return ValidationResult.Success;
}
else
{
return new ValidationResult("Error");
}
}
}

You have to group the | to work properly.
I successfully tried, which should be exactly your regex but grouped and limited to start & end:
^([01]?[0-9]|2[0-3])$
Your named Regex.IsMatch line returns true on every expression on my machine.

Related

JavaFX - TextField with regex for zipcode

for my programm I want to use a TextField where the user can enter a zipcode (German ones). For that I tried what you can see below. If the user enters more than 5 digits every additional digit shall be deleted immediately. Of course letters are not allowed.
When I use this pattern ^[0-9]{0,5}$ on https://regex101.com/ it does what I intended to, but when I try this in JavaFX it doesn't work. But I couldn't find a solution yet.
Can anyone tell me what I did wrong?
Edit: For people, who didn't work with JavaFX yet: When the user enters just one character, the method check(String text) is called. So the result should also be true, when there are 1 to 5 digits. But not more ;-)
public class NumberTextField extends TextField{
ErrorLabel label;
NumberTextField(String text, ErrorLabel label){
setText(text);
setFont(Font.font("Calibri", 17));
setMinHeight(35);
setMinWidth(200);
setMaxWidth(200);
this.label = label;
}
NumberTextField(){}
#Override
public void replaceText(int start, int end, String text){
if(check(text)) {
super.replaceText(start, end, text);
}
}
#Override
public void replaceSelection(String text){
if(check(text)){
super.replaceSelection(text);
}
}
private boolean check(String text){
if(text.matches("^[0-9]{0,5}$")){
label.setText("Success");
label.setBlack();
return true;
} else{
return false;
}
}
You don't need to extend TextField to do this. In fact I recommend using a TextFormatter, since this is simpler to implement:
It does not require you to overwrite multiple method. You simply need to decide based on the data about the desired input, if you want to allow the change or not.
final Pattern pattern = Pattern.compile("\\d{0,5}");
TextFormatter<?> formatter = new TextFormatter<>(change -> {
if (pattern.matcher(change.getControlNewText()).matches()) {
// todo: remove error message/markup
return change; // allow this change to happen
} else {
// todo: add error message/markup
return null; // prevent change
}
});
TextField textField = new TextField();
textField.setTextFormatter(formatter);
Your original expression should be working fine, if we wish to validate a five-digits zip though, we might want to drop the 0 quantifier:
^[0-9]{5}$
^\d{5}$
For validation purposes, we might want to keep the start and end anchors, however for just testing, we can remove and see:
[0-9]{5}
\d{5}
It is likely that some other chars, would get through our inputs, which we do not wish to have.
Demo
Test
import java.util.regex.Matcher;
import java.util.regex.Pattern;
final String regex = "^[0-9]{5}$";
final String string = "01234\n"
+ "012345\n"
+ "0\n"
+ "1234";
final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE);
final Matcher matcher = pattern.matcher(string);
while (matcher.find()) {
System.out.println("Full match: " + matcher.group(0));
for (int i = 1; i <= matcher.groupCount(); i++) {
System.out.println("Group " + i + ": " + matcher.group(i));
}
}

Typescript regex exclude whole string if followed by specific string

I'm been running into weird issues with regex and Typescript in which I'm trying to have my expression replace the value of test minus the first instance if followed by test. In other words, replace the first two lines that have test but for the third line below, replace only the second value of test.
[test]
[test].[db]
[test].[test]
Where it should look like:
[newvalue]
[newvalue].[db]
[test].[newvalue]
I've come up with lots of variations but this is the one that I thought was simple enough to solve it and regex101 can confirm this works:
\[(\w+)\](?!\.\[test\])
But when using Typescript (custom task in VSTS build), it actually replaces the values like this:
[newvalue]
[newvalue].[db]
[newvalue].[test]
Update: It looks like a regex like (test)(?!.test) breaks when changing the use cases removing the square brackets, which makes me think this might be somewhere in the code. Could the problem be with the index that the value is replaced at?
Some of the code in Typescript that is calling this:
var filePattern = tl.getInput("filePattern", true);
var tokenRegex = tl.getInput("tokenRegex", true);
for (var i = 0; i < files.length; i++) {
var file = files[i];
console.info(`Starting regex replacement in [${file}]`);
var contents = fs.readFileSync(file).toString();
var reg = new RegExp(tokenRegex, "g");
// loop through each match
var match: RegExpExecArray;
// keep a separate var for the contents so that the regex index doesn't get messed up
// by replacing items underneath it
var newContents = contents;
while((match = reg.exec(contents)) !== null) {
var vName = match[1];
// find the variable value in the environment
var vValue = tl.getVariable(vName);
if (typeof vValue === 'undefined') {
tl.warning(`Token [${vName}] does not have an environment value`);
} else {
newContents = newContents.replace(match[0], vValue);
console.info(`Replaced token [${vName }]`);
}
}
}
Full code is for the task I'm using this with: https://github.com/colindembovsky/cols-agent-tasks/blob/master/Tasks/ReplaceTokens/replaceTokens.ts
For me this regex is working like you are expecting:
\[(test)\](?!\.\[test\])
with a Typescript code like that
myString.replace(/\[(test)\](?!\.\[test\])/g, "[newvalue]");
Instead, the regex you are using should replace also the [db] part.
I've tried with this code:
class Greeter {
myString1: string;
myString2: string;
myString3: string;
greeting: string;
constructor(str1: string, str2: string, str3: string) {
this.myString1 = str1.replace(/\[(test)\](?!\.\[test\])/g, "[newvalue]");
this.myString2 = str2.replace(/\[(test)\](?!\.\[test\])/g, "[newvalue]");
this.myString3 = str3.replace(/\[(test)\](?!\.\[test\])/g, "[newvalue]");
this.greeting = this.myString1 + "\n" + this.myString2 + "\n" + this.myString3;
}
greet() {
return "Hello, these are your replacements:\n" + this.greeting;
}
}
let greeter = new Greeter("[test]", "[test].[db]", "[test].[test]");
let button = document.createElement('button');
button.textContent = "Say Hello";
button.onclick = function() {
alert(greeter.greet());
}
document.body.appendChild(button);
Online playground here.

Parsing tags in string

I'm trying to parse a string with custom tags like this
[color value=0x000000]This house is [wave][color value=0xFF0000]haunted[/color][/wave].
I've heard about ghosts [shake]screaming[/shake] here after midnight.[/color]
I've figured out what regexps to use
/\[color value=(.*?)\](.*?)\[\/color\]/gs
/\[wave\](.*?)\[\/wave\]/gs
/\[shake\](.*?)\[\/shake\]/gs
But the thing is - I need to get correct ranges (startIndex, endIndex) of those groups in result string so I could apply them correctly. And that's where I feel completely lost, because everytime I replace tags there's always a chance for indexes to mess up. It gets espesically hard for nested tags.
So input is a string
[color value=0x000000]This house is [wave][color value=0xFF0000]haunted[/color][/wave].
I've heard about ghosts [shake]screaming[/shake] here after midnight.[/color]
And in output I want to get something like
Apply color 0x000000 from 0 to 75
Apply wave from 14 to 20
Apply color 0xFF0000 from 14 to 20
Apply shake from 46 to 51
Notice that's indices match to result string.
How do I parse it?
Unfortunately, I'm not familiar with ActionScript, but this C# code shows one solution using regular expressions. Rather than match specific tags, I used a regular expression that can match any tag. And instead of trying to make a regular expression that matches the whole start and end tag including the text in between (which I think is impossible with nested tags), I made the regular expression just match a start OR end tag, then did some extra processing to match up the start and end tags and remove them from the string keeping the essential information.
using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;
class Program
{
static void Main(string[] args)
{
string data = "[color value=0x000000]This house is [wave][color value=0xFF0000]haunted[/color][/wave]. " +
"I've heard about ghosts [shake]screaming[/shake] here after midnight.[/color]";
ParsedData result = ParseData(data);
foreach (TagInfo t in result.tags)
{
if (string.IsNullOrEmpty(t.attributeName))
{
Console.WriteLine("Apply {0} from {1} to {2}", t.name, t.start, t.start + t.length - 1);
}
else
{
Console.WriteLine("Apply {0} {1}={2} from {3} to {4}", t.name, t.attributeName, t.attributeValue, t.start, t.start + t.length - 1);
}
Console.WriteLine(result.data);
Console.WriteLine("{0}{1}\n", new string(' ', t.start), new string('-', t.length));
}
}
static ParsedData ParseData(string data)
{
List<TagInfo> tagList = new List<TagInfo>();
Regex reTag = new Regex(#"\[(\w+)(\s+(\w+)\s*=\s*([^\]]+))?\]|\[(\/\w+)\]");
Match m = reTag.Match(data);
// Phase 1 - Collect all the start and end tags, noting their position in the original data string
while (m.Success)
{
if (m.Groups[1].Success) // Matched a start tag
{
tagList.Add(new TagInfo()
{
name = m.Groups[1].Value,
attributeName = m.Groups[3].Value,
attributeValue = m.Groups[4].Value,
tagLength = m.Groups[0].Length,
start = m.Groups[0].Index
});
}
else if (m.Groups[5].Success)
{
tagList.Add(new TagInfo()
{
name = m.Groups[5].Value,
tagLength = m.Groups[0].Length,
start = m.Groups[0].Index
});
}
m = m.NextMatch();
}
// Phase 2 - match end tags to start tags
List<TagInfo> unmatched = new List<TagInfo>();
foreach (TagInfo t in tagList)
{
if (t.name.StartsWith("/"))
{
for (int i = unmatched.Count - 1; i >= 0; i--)
{
if (unmatched[i].name == t.name.Substring(1))
{
t.otherEnd = unmatched[i];
unmatched[i].otherEnd = t;
unmatched.Remove(unmatched[i]);
break;
}
}
}
else
{
unmatched.Add(t);
}
}
int subtractLength = 0;
// Phase 3 - Remove tags from the string, updating start positions and calculating length in the process
foreach (TagInfo t in tagList.ToArray())
{
t.start -= subtractLength;
// If this is an end tag, calculate the length for the corresponding start tag,
// and remove the end tag from the tag list.
if (t.otherEnd.start < t.start)
{
t.otherEnd.length = t.start - t.otherEnd.start;
tagList.Remove(t);
}
// Keep track of how many characters in tags have been removed from the string so far
subtractLength += t.tagLength;
}
return new ParsedData()
{
data = reTag.Replace(data, string.Empty),
tags = tagList.ToArray()
};
}
class TagInfo
{
public int start;
public int length;
public int tagLength;
public string name;
public string attributeName;
public string attributeValue;
public TagInfo otherEnd;
}
class ParsedData
{
public string data;
public TagInfo[] tags;
}
}
The output is:
Apply color value=0x000000 from 0 to 76
This house is haunted. I've heard about ghosts screaming here after midnight.
-----------------------------------------------------------------------------
Apply wave from 14 to 20
This house is haunted. I've heard about ghosts screaming here after midnight.
-------
Apply color value=0xFF0000 from 14 to 20
This house is haunted. I've heard about ghosts screaming here after midnight.
-------
Apply shake from 47 to 55
This house is haunted. I've heard about ghosts screaming here after midnight.
---------
Let me show you a parsing method that you can apply not only to the case above, but to every case with a pattern cutting through the case. This method is not limited to the terms - color, wave, shake.
private List<Tuple<string, string>> getVals(string input)
{
List<Tuple<string, string>> finals = new List<Tuple<string,string>>();
// first parser
var mts = Regex.Matches(input, #"\[[^\u005D]+\]");
foreach (var mt in mts)
{
// has no value=
if (!Regex.IsMatch(mt.ToString(), #"(?i)value[\n\r\t\s]*="))
{
// not closing tag
if (!Regex.IsMatch(mt.ToString(), #"^\[[\n\r\t\s]*\/"))
{
try
{
finals.Add(new Tuple<string, string>(Regex.Replace(mt.ToString(), #"^\[|\]$", "").Trim(), ""));
}
catch (Exception es)
{
Console.WriteLine(es.ToString());
}
}
}
// has value=
else
{
try
{
var spls = Regex.Split(mt.ToString(), #"(?i)value[\n\r\t\s]*=");
finals.Add(new Tuple<string, string>(Regex.Replace(spls[0].ToString(), #"^\[", "").Trim(), Regex.Replace(spls[1].ToString(), #"^\]$", "").Trim()));
}
catch (Exception es)
{
Console.WriteLine(es.ToString());
}
}
}
return finals;
}
I also have an experience parsing JSON with a single regular expression. If you wonder what it is, visit my blog www.mysplitter.com .

Regex to search when a text is found and other text is missing

I have the following text:
application ONE {
protocol tcp;
destination-port 50;
}
application TWO {
protocol udp;
destination-port 51;
inactivity-timeout 800;
}
application THREE {
protocol udp;
destination-port 500;
}
I need to search for each application, when protocol is udp, if inactivity-timeout is different from 1800 (app TWO) or protocol is udp and no inactivity is defined (app THREE).
I've solved the first case with a regular expression:
(?s)(?=protocol udp).*(inactivity-timeout (?!1800))
But I've not found way to get the second.
Any suggestions?
You flagged this with Java, so I'm giving you a Java solution although I'm not sure from your post if that's that what you desire.
Personally I would split the problem into two parts. First, extracting the applications, and second, checking if an application meet the requirements. Here is my try.
public class ApplicationReadOut {
public static String EXAMLPLE = "application ONE {\r\n"
+" protocol tcp;\r\n"
+" destination-port 50;\r\n"
+"}\r\n"
+"application TWO {\r\n"
+" protocol udp;\r\n"
+" destination-port 51;\r\n"
+" inactivity-timeout 800;\r\n"
+"}\r\n"
+"application THREE {\r\n"
+" protocol udp;\r\n"
+" destination-port 500;\r\n"
+"}\r\n";
public boolean checkApplication(String app) {
String[] lines = app.split("\r\n");
boolean udp = false;
boolean timeoutDiffers = true;
boolean timeoutMentioned = false;
for (String line : lines) {
if (line.trim().equals("protocol udp;"))
udp = true;
if (line.trim().equals("inactivity-timeout 1800;"))
timeoutDiffers = false;
if (line.trim().startsWith("inactivity-timeout "))
timeoutMentioned = true;
}
return udp & (timeoutDiffers | !timeoutMentioned);
}
public String[] extractApplications(String text) {
String[] applications = text.split("}(\r*\n*)*");
// the \r\n thing is to ignore blank lines in between applications
ArrayList<String> goodApps = new ArrayList<String>(applications.length);
for (int i = 0; i < applications.length; i++) {
applications[i] += "}"; // this was removed by split
if (checkApplication(applications[i]))
goodApps.add(applications[i]);
}
return goodApps.toArray(new String[0]);
}
public static void main(String[] args) {
ApplicationReadOut aro = new ApplicationReadOut();
System.out.println(Arrays.toString(aro.extractApplications(EXAMLPLE)));
}
}
I hope this is useful and you can modify this to fit your needs :-)
This should do the work:
application\s*([a-z]*)\s*{(?=(?=\s*protocol udp*)(?!inactivity-timeout.*))|(?=(?=\s*protocol udp*)(?!inactivity-timeout\s1800))(?=})
You need to use /img for multiline, case-insensitive and global search.
Explanation and your example here.

How do I check if a filename matches a wildcard pattern

I've got a wildcard pattern, perhaps "*.txt" or "POS??.dat".
I also have list of filenames in memory that I need to compare to that pattern.
How would I do that, keeping in mind I need exactly the same semantics that IO.DirectoryInfo.GetFiles(pattern) uses.
EDIT: Blindly translating this into a regex will NOT work.
I have a complete answer in code for you that's 95% like FindFiles(string).
The 5% that isn't there is the short names/long names behavior in the second note on the MSDN documentation for this function.
If you would still like to get that behavior, you'll have to complete a computation of the short name of each string you have in the input array, and then add the long name to the collection of matches if either the long or short name matches the pattern.
Here is the code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
namespace FindFilesRegEx
{
class Program
{
static void Main(string[] args)
{
string[] names = { "hello.t", "HelLo.tx", "HeLLo.txt", "HeLLo.txtsjfhs", "HeLLo.tx.sdj", "hAlLo20984.txt" };
string[] matches;
matches = FindFilesEmulator("hello.tx", names);
matches = FindFilesEmulator("H*o*.???", names);
matches = FindFilesEmulator("hello.txt", names);
matches = FindFilesEmulator("lskfjd30", names);
}
public string[] FindFilesEmulator(string pattern, string[] names)
{
List<string> matches = new List<string>();
Regex regex = FindFilesPatternToRegex.Convert(pattern);
foreach (string s in names)
{
if (regex.IsMatch(s))
{
matches.Add(s);
}
}
return matches.ToArray();
}
internal static class FindFilesPatternToRegex
{
private static Regex HasQuestionMarkRegEx = new Regex(#"\?", RegexOptions.Compiled);
private static Regex IllegalCharactersRegex = new Regex("[" + #"\/:<>|" + "\"]", RegexOptions.Compiled);
private static Regex CatchExtentionRegex = new Regex(#"^\s*.+\.([^\.]+)\s*$", RegexOptions.Compiled);
private static string NonDotCharacters = #"[^.]*";
public static Regex Convert(string pattern)
{
if (pattern == null)
{
throw new ArgumentNullException();
}
pattern = pattern.Trim();
if (pattern.Length == 0)
{
throw new ArgumentException("Pattern is empty.");
}
if(IllegalCharactersRegex.IsMatch(pattern))
{
throw new ArgumentException("Pattern contains illegal characters.");
}
bool hasExtension = CatchExtentionRegex.IsMatch(pattern);
bool matchExact = false;
if (HasQuestionMarkRegEx.IsMatch(pattern))
{
matchExact = true;
}
else if(hasExtension)
{
matchExact = CatchExtentionRegex.Match(pattern).Groups[1].Length != 3;
}
string regexString = Regex.Escape(pattern);
regexString = "^" + Regex.Replace(regexString, #"\\\*", ".*");
regexString = Regex.Replace(regexString, #"\\\?", ".");
if(!matchExact && hasExtension)
{
regexString += NonDotCharacters;
}
regexString += "$";
Regex regex = new Regex(regexString, RegexOptions.Compiled | RegexOptions.IgnoreCase);
return regex;
}
}
}
}
You can simply do this. You do not need regular expressions.
using Microsoft.VisualBasic.CompilerServices;
if (Operators.LikeString("pos123.txt", "pos?23.*", CompareMethod.Text))
{
Console.WriteLine("Filename matches pattern");
}
Or, in VB.Net,
If "pos123.txt" Like "pos?23.*" Then
Console.WriteLine("Filename matches pattern")
End If
In c# you could simulate this with an extension method. It wouldn't be exactly like VB Like, but it would be like...very cool.
You could translate the wildcards into a regular expression:
*.txt -> ^.+\.txt$
POS??.dat _> ^POS..\.dat$
Use the Regex.Escape method to escape the characters that are not wildcars into literal strings for the pattern (e.g. converting ".txt" to "\.txt").
The wildcard * translates into .+, and ? translates into .
Put ^ at the beginning of the pattern to match the beginning of the string, and $ at the end to match the end of the string.
Now you can use the Regex.IsMatch method to check if a file name matches the pattern.
Just call the Windows API function PathMatchSpecExW().
[Flags]
public enum MatchPatternFlags : uint
{
Normal = 0x00000000, // PMSF_NORMAL
Multiple = 0x00000001, // PMSF_MULTIPLE
DontStripSpaces = 0x00010000 // PMSF_DONT_STRIP_SPACES
}
class FileName
{
[DllImport("Shlwapi.dll", SetLastError = false)]
static extern int PathMatchSpecExW([MarshalAs(UnmanagedType.LPWStr)] string file,
[MarshalAs(UnmanagedType.LPWStr)] string spec,
MatchPatternFlags flags);
/*******************************************************************************
* Function: MatchPattern
*
* Description: Matches a file name against one or more file name patterns.
*
* Arguments: file - File name to check
* spec - Name pattern(s) to search foe
* flags - Flags to modify search condition (MatchPatternFlags)
*
* Return value: Returns true if name matches the pattern.
*******************************************************************************/
public static bool MatchPattern(string file, string spec, MatchPatternFlags flags)
{
if (String.IsNullOrEmpty(file))
return false;
if (String.IsNullOrEmpty(spec))
return true;
int result = PathMatchSpecExW(file, spec, flags);
return (result == 0);
}
}
Some kind of regex/glob is the way to go, but there are some subtleties; your question indicates you want identical semantics to IO.DirectoryInfo.GetFiles. That could be a challenge, because of the special cases involving 8.3 vs. long file names and the like. The whole story is on MSDN.
If you don't need an exact behavioral match, there are a couple of good SO questions:
glob pattern matching in .NET
How to implement glob in C#
For anyone who comes across this question now that it is years later, I found over at the MSDN social boards that the GetFiles() method will accept * and ? wildcard characters in the searchPattern parameter. (At least in .Net 3.5, 4.0, and 4.5)
Directory.GetFiles(string path, string searchPattern)
http://msdn.microsoft.com/en-us/library/wz42302f.aspx
Plz try the below code.
static void Main(string[] args)
{
string _wildCardPattern = "*.txt";
List<string> _fileNames = new List<string>();
_fileNames.Add("text_file.txt");
_fileNames.Add("csv_file.csv");
Console.WriteLine("\nFilenames that matches [{0}] pattern are : ", _wildCardPattern);
foreach (string _fileName in _fileNames)
{
CustomWildCardPattern _patetrn = new CustomWildCardPattern(_wildCardPattern);
if (_patetrn.IsMatch(_fileName))
{
Console.WriteLine("{0}", _fileName);
}
}
}
public class CustomWildCardPattern : Regex
{
public CustomWildCardPattern(string wildCardPattern)
: base(WildcardPatternToRegex(wildCardPattern))
{
}
public CustomWildCardPattern(string wildcardPattern, RegexOptions regexOptions)
: base(WildcardPatternToRegex(wildcardPattern), regexOptions)
{
}
private static string WildcardPatternToRegex(string wildcardPattern)
{
string patternWithWildcards = "^" + Regex.Escape(wildcardPattern).Replace("\\*", ".*");
patternWithWildcards = patternWithWildcards.Replace("\\?", ".") + "$";
return patternWithWildcards;
}
}
For searching against a specific pattern, it might be worth using File Globbing which allows you to use search patterns like you would in a .gitignore file.
See here: https://learn.microsoft.com/en-us/dotnet/core/extensions/file-globbing
This allows you to add both inclusions & exclusions to your search.
Please see below the example code snippet from the Microsoft Source above:
Matcher matcher = new Matcher();
matcher.AddIncludePatterns(new[] { "*.txt" });
IEnumerable<string> matchingFiles = matcher.GetResultsInFullPath(filepath);
The use of RegexOptions.IgnoreCase will fix it.
public class WildcardPattern : Regex {
public WildcardPattern(string wildCardPattern)
: base(ConvertPatternToRegex(wildCardPattern), RegexOptions.IgnoreCase) {
}
public WildcardPattern(string wildcardPattern, RegexOptions regexOptions)
: base(ConvertPatternToRegex(wildcardPattern), regexOptions) {
}
private static string ConvertPatternToRegex(string wildcardPattern) {
string patternWithWildcards = Regex.Escape(wildcardPattern).Replace("\\*", ".*");
patternWithWildcards = string.Concat("^", patternWithWildcards.Replace("\\?", "."), "$");
return patternWithWildcards;
}
}