#region License Information (GPL v3)
/*
ShareX - A program that allows you to take screenshots and share any file type
Copyright © 2007-2015 ShareX Developers
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Optionally you can also view the license at .
*/
#endregion License Information (GPL v3)
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Web;
namespace ShareX.HelpersLib
{
public static class URLHelpers
{
public static void OpenURL(string url)
{
if (!string.IsNullOrEmpty(url))
{
TaskEx.Run(() =>
{
try
{
if (!string.IsNullOrEmpty(HelpersOptions.BrowserPath))
{
Process.Start(HelpersOptions.BrowserPath, url);
}
else
{
Process.Start(url);
}
DebugHelper.WriteLine("URL opened: " + url);
}
catch (Exception e)
{
DebugHelper.WriteException(e, string.Format("OpenURL({0}) failed", url));
}
});
}
}
private static string Encode(string text, string unreservedCharacters)
{
StringBuilder result = new StringBuilder();
if (!string.IsNullOrEmpty(text))
{
foreach (char c in text)
{
if (unreservedCharacters.Contains(c))
{
result.Append(c);
}
else
{
byte[] bytes = Encoding.UTF8.GetBytes(c.ToString());
foreach (byte b in bytes)
{
result.AppendFormat(CultureInfo.InvariantCulture, "%{0:X2}", b);
}
}
}
}
return result.ToString();
}
public static string URLEncode(string text)
{
return Encode(text, Helpers.URLCharacters);
}
public static string URLPathEncode(string text)
{
return Encode(text, Helpers.URLPathCharacters);
}
public static string HtmlEncode(string text)
{
char[] chars = HttpUtility.HtmlEncode(text).ToCharArray();
StringBuilder result = new StringBuilder(chars.Length + (int)(chars.Length * 0.1));
foreach (char c in chars)
{
int value = Convert.ToInt32(c);
if (value > 127)
{
result.AppendFormat("{0};", value);
}
else
{
result.Append(c);
}
}
return result.ToString();
}
public static string CombineURL(string url1, string url2)
{
bool url1Empty = string.IsNullOrEmpty(url1);
bool url2Empty = string.IsNullOrEmpty(url2);
if (url1Empty && url2Empty)
{
return string.Empty;
}
if (url1Empty)
{
return url2;
}
if (url2Empty)
{
return url1;
}
if (url1.EndsWith("/"))
{
url1 = url1.Substring(0, url1.Length - 1);
}
if (url2.StartsWith("/"))
{
url2 = url2.Remove(0, 1);
}
return url1 + "/" + url2;
}
public static string CombineURL(params string[] urls)
{
return urls.Aggregate(CombineURL);
}
public static bool IsValidURL(string url)
{
if (!string.IsNullOrEmpty(url))
{
url = url.Trim();
return !url.StartsWith("file://") && Uri.IsWellFormedUriString(url, UriKind.RelativeOrAbsolute);
}
return false;
}
public static bool IsValidURLRegex(string url)
{
if (string.IsNullOrEmpty(url)) return false;
// https://gist.github.com/729294
string pattern =
"^" +
// protocol identifier
"(?:(?:https?|ftp)://)" +
// user:pass authentication
"(?:\\S+(?::\\S*)?@)?" +
"(?:" +
// IP address exclusion
// private & local networks
"(?!(?:10|127)(?:\\.\\d{1,3}){3})" +
"(?!(?:169\\.254|192\\.168)(?:\\.\\d{1,3}){2})" +
"(?!172\\.(?:1[6-9]|2\\d|3[0-1])(?:\\.\\d{1,3}){2})" +
// IP address dotted notation octets
// excludes loopback network 0.0.0.0
// excludes reserved space >= 224.0.0.0
// excludes network & broacast addresses
// (first & last IP address of each class)
"(?:[1-9]\\d?|1\\d\\d|2[01]\\d|22[0-3])" +
"(?:\\.(?:1?\\d{1,2}|2[0-4]\\d|25[0-5])){2}" +
"(?:\\.(?:[1-9]\\d?|1\\d\\d|2[0-4]\\d|25[0-4]))" +
"|" +
// host name
"(?:(?:[a-z\\u00a1-\\uffff0-9]-*)*[a-z\\u00a1-\\uffff0-9]+)" +
// domain name
"(?:\\.(?:[a-z\\u00a1-\\uffff0-9]-*)*[a-z\\u00a1-\\uffff0-9]+)*" +
// TLD identifier
"(?:\\.(?:[a-z\\u00a1-\\uffff]{2,}))" +
// TLD may end with dot
"\\.?" +
")" +
// port number
"(?::\\d{2,5})?" +
// resource path
"(?:[/?#]\\S*)?" +
"$";
return Regex.IsMatch(url.Trim(), pattern, RegexOptions.IgnoreCase);
}
public static string AddSlash(string url, SlashType slashType)
{
return AddSlash(url, slashType, 1);
}
public static string AddSlash(string url, SlashType slashType, int count)
{
if (slashType == SlashType.Prefix)
{
if (url.StartsWith("/"))
{
url = url.Remove(0, 1);
}
for (int i = 0; i < count; i++)
{
url = "/" + url;
}
}
else
{
if (url.EndsWith("/"))
{
url = url.Substring(0, url.Length - 1);
}
for (int i = 0; i < count; i++)
{
url += "/";
}
}
return url;
}
public static string GetFileName(string path, bool checkExtension = false, bool urlDecode = false)
{
if (urlDecode)
{
string tempPath = null;
for (int i = 0; i < 10 && path != tempPath; i++)
{
tempPath = path;
path = HttpUtility.UrlDecode(path);
}
}
if (path.Contains("/"))
{
path = path.Remove(0, path.LastIndexOf('/') + 1);
}
if (checkExtension && !Path.HasExtension(path))
{
return null;
}
return path;
}
public static string GetDirectoryPath(string path)
{
if (path.Contains("/"))
{
path = path.Substring(0, path.LastIndexOf('/'));
}
return path;
}
public static List GetPaths(string path)
{
List result = new List();
string temp = string.Empty;
string[] dirs = path.Split('/');
foreach (string dir in dirs)
{
if (!string.IsNullOrEmpty(dir))
{
temp += "/" + dir;
result.Add(temp);
}
}
return result;
}
private static readonly string[] URLPrefixes = new string[] { "http://", "https://", "ftp://", "ftps://", "file://" };
public static bool HasPrefix(string url)
{
return URLPrefixes.Any(x => url.StartsWith(x, StringComparison.InvariantCultureIgnoreCase));
}
public static string FixPrefix(string url)
{
if (!HasPrefix(url))
{
return "http://" + url;
}
return url;
}
public static string ForceHTTPS(string url)
{
if (!string.IsNullOrEmpty(url) && url.StartsWith("http://", StringComparison.InvariantCultureIgnoreCase))
{
return "https://" + url.Substring(7);
}
return url;
}
public static string RemovePrefixes(string url)
{
foreach (string prefix in URLPrefixes)
{
if (url.StartsWith(prefix, StringComparison.InvariantCultureIgnoreCase))
{
url = url.Remove(0, prefix.Length);
break;
}
}
return url;
}
}
}