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Lidarr/NzbDrone.Core/Fluent.cs

160 lines
4.3 KiB

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
namespace NzbDrone.Core
{
public static class Fluent
{
public static string WithDefault(this string actual, object defaultValue)
{
if (defaultValue == null)
throw new ArgumentNullException("defaultValue");
if (String.IsNullOrWhiteSpace(actual))
{
return defaultValue.ToString();
}
return actual;
}
public static Int64 Megabytes(this int megabytes)
{
return megabytes * 1048576L;
}
public static Int64 Gigabytes(this int gigabytes)
{
return gigabytes * 1073741824L;
}
public static string ToBestDateString(this DateTime dateTime)
{
if (dateTime == DateTime.Today.AddDays(-1))
return "Yesterday";
if (dateTime == DateTime.Today)
return "Today";
if (dateTime == DateTime.Today.AddDays(1))
return "Tomorrow";
if (dateTime > DateTime.Today.AddDays(1) && dateTime < DateTime.Today.AddDays(7))
return dateTime.DayOfWeek.ToString();
return dateTime.ToShortDateString();
}
public static string ParentUriString(this Uri uri)
{
return uri.AbsoluteUri.Remove(uri.AbsoluteUri.Length - String.Join("", uri.Segments).Length - uri.Query.Length);
}
public static int MaxOrDefault(this IEnumerable<int> ints)
{
var intList = ints.ToList();
if (!intList.Any())
return 0;
return intList.Max();
}
public static string Truncate(this string s, int maxLength)
{
if (Encoding.UTF8.GetByteCount(s) <= maxLength)
return s;
var cs = s.ToCharArray();
int length = 0;
int i = 0;
while (i < cs.Length)
{
int charSize = 1;
if (i < (cs.Length - 1) && char.IsSurrogate(cs[i]))
charSize = 2;
int byteSize = Encoding.UTF8.GetByteCount(cs, i, charSize);
if ((byteSize + length) <= maxLength)
{
i = i + charSize;
length += byteSize;
}
else
break;
}
return s.Substring(0, i);
}
public static string AddSpacesToEnum(this Enum enumValue)
{
var text = enumValue.ToString();
if (string.IsNullOrWhiteSpace(text))
return "";
var newText = new StringBuilder(text.Length * 2);
newText.Append(text[0]);
for (int i = 1; i < text.Length; i++)
{
if (char.IsUpper(text[i]) && text[i - 1] != ' ')
newText.Append(' ');
newText.Append(text[i]);
}
return newText.ToString();
}
private const Decimal ONE_KILOBYTE = 1024M;
private const Decimal ONE_MEGABYTE = ONE_KILOBYTE * 1024M;
private const Decimal ONE_GIGABYTE = ONE_MEGABYTE * 1024M;
public static string ToBestFileSize(this long bytes, int precision = 0)
{
if (bytes == 0)
return "0B";
decimal size = Convert.ToDecimal(bytes);
string suffix;
if (size > ONE_GIGABYTE)
{
size /= ONE_GIGABYTE;
suffix = "GB";
}
else if (size > ONE_MEGABYTE)
{
size /= ONE_MEGABYTE;
suffix = "MB";
}
else if (size > ONE_KILOBYTE)
{
size /= ONE_KILOBYTE;
suffix = "KB";
}
else
{
suffix = " B";
}
return String.Format("{0:N" + precision + "} {1}", size, suffix);
}
public static int MinOrDefault(this IEnumerable<int> ints)
{
if (ints == null)
return 0;
var intsList = ints.ToList();
if (!intsList.Any())
return 0;
return intsList.Min();
}
}
}