VAR/VAR.UrlCompressor
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Url class for url parsing.

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Valeriano A.R.
2017-07-12 23:59:37 +02:00
parent 39b62740c8
commit 675b87e6ee
2 changed files with 137 additions and 0 deletions
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136
VAR.UrlCompressor/Url.cs Normal file
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@@ -0,0 +1,136 @@
using System;
namespace VAR.UrlCompressor
{
class Url
{
public string Protocol { get; set; }
public string Host { get; set; }
public string Port { get; set; }
public string Path { get; set; }
private Url() { }
private enum ParseStatus
{
ParsingProtocol,
ParsingHost,
ParsingPort,
ParsingPath,
};
private ParseStatus _status = ParseStatus.ParsingProtocol;
private int _i0 = 0;
private int _i = 0;
private void ResetParser()
{
_status = ParseStatus.ParsingProtocol;
_i0 = 0;
_i = 0;
}
private void ParseUrl(string url)
{
while (_i < url.Length)
{
switch (_status)
{
case ParseStatus.ParsingProtocol:
if (url[_i] == ':')
{
Protocol = url.Substring(_i0, _i - _i0);
if (_i + 2 >= url.Length)
{
throw new Exception(string.Format("Unexpected end of URL, while parsing protocol. \"{0}\"", url));
}
if (url[_i + 1] != '/' || url[_i + 2] != '/')
{
throw new Exception(string.Format("Unexpected end of URL, while parsing protocol. \"{0}\"", url));
}
_status = ParseStatus.ParsingHost;
_i0 = _i + 3;
_i = _i0;
}
break;
case ParseStatus.ParsingHost:
if (char.IsLetterOrDigit(url[_i]) == false && url[_i] != '.')
{
Host = url.Substring(_i0, _i - _i0);
_i0 = _i;
if (url[_i] == ':')
{
_status = ParseStatus.ParsingPort;
}
else
{
_status = ParseStatus.ParsingPath;
}
}
break;
case ParseStatus.ParsingPort:
if (char.IsDigit(url[_i]) == false)
{
Port = url.Substring(_i0, _i - _i0);
_i0 = _i;
_status = ParseStatus.ParsingPath;
}
break;
case ParseStatus.ParsingPath:
_i = url.Length - 1;
break;
}
_i++;
}
switch (_status)
{
case ParseStatus.ParsingProtocol:
Protocol = url.Substring(_i0, _i - _i0);
break;
case ParseStatus.ParsingHost:
Host = url.Substring(_i0, _i - _i0);
break;
case ParseStatus.ParsingPort:
Port = url.Substring(_i0, _i - _i0);
break;
case ParseStatus.ParsingPath:
Path = url.Substring(_i0, _i - _i0);
break;
}
}
public static Url CreateFromString(string url)
{
var newUrl = new Url();
newUrl.ParseUrl(url);
return newUrl;
}
public static Url CreateFromShortString(string url)
{
var newUrl = new Url()
{
Protocol = url[0].ToString(),
_status = ParseStatus.ParsingHost,
_i = 1,
_i0 = 1,
};
newUrl.ParseUrl(url);
return newUrl;
}
public override string ToString()
{
return string.Format("{0}://{1}{2}{3}", Protocol, Host, Port, Path);
}
public string ToShortString()
{
return string.Format("{0}{1}{2}{3}", Protocol[0], Host, Port, Path);
}
}
}

1
VAR.UrlCompressor/VAR.UrlCompressor.csproj
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@@ -63,6 +63,7 @@
<Compile Include="Huffman.cs" />
<Compile Include="Properties\AssemblyInfo.cs" />
<Compile Include="UrlCompressor.cs" />
<Compile Include="Url.cs" />
</ItemGroup>
<ItemGroup>
<None Include="Build.NuGet.cmd" />