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Prowlarr/NzbDrone.Common/EnsureThat/EnsureStringExtensions.cs

137 lines
5.5 KiB

using System;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;
using NzbDrone.Common.EnsureThat.Resources;
using NzbDrone.Common.EnvironmentInfo;
namespace NzbDrone.Common.EnsureThat
{
[DebuggerStepThrough]
public static class EnsureStringExtensions
{
[DebuggerStepThrough]
public static Param<string> IsNotNullOrWhiteSpace(this Param<string> param)
{
if (string.IsNullOrWhiteSpace(param.Value))
throw ExceptionFactory.CreateForParamValidation(param.Name, ExceptionMessages.EnsureExtensions_IsNotNullOrWhiteSpace);
return param;
}
[DebuggerStepThrough]
public static Param<string> IsNotNullOrEmpty(this Param<string> param)
{
if (string.IsNullOrEmpty(param.Value))
throw ExceptionFactory.CreateForParamValidation(param.Name, ExceptionMessages.EnsureExtensions_IsNotNullOrEmpty);
return param;
}
[DebuggerStepThrough]
public static Param<string> HasLengthBetween(this Param<string> param, int minLength, int maxLength)
{
if (string.IsNullOrEmpty(param.Value))
throw ExceptionFactory.CreateForParamValidation(param.Name, ExceptionMessages.EnsureExtensions_IsNotNullOrEmpty);
var length = param.Value.Length;
if (length < minLength)
throw ExceptionFactory.CreateForParamValidation(param.Name, ExceptionMessages.EnsureExtensions_IsNotInRange_ToShort.Inject(minLength, maxLength, length));
if (length > maxLength)
throw ExceptionFactory.CreateForParamValidation(param.Name, ExceptionMessages.EnsureExtensions_IsNotInRange_ToLong.Inject(minLength, maxLength, length));
return param;
}
[DebuggerStepThrough]
public static Param<string> IsLongerThan(this Param<string> param, int minLength)
{
if (string.IsNullOrEmpty(param.Value))
throw ExceptionFactory.CreateForParamValidation(param.Name, ExceptionMessages.EnsureExtensions_IsNotNullOrEmpty);
var length = param.Value.Length;
if (length < minLength)
throw ExceptionFactory.CreateForParamValidation(param.Name, "The string is not long enough. Must be at least '{0}' but was '{1}' characters long.".Inject(minLength, length));
return param;
}
[DebuggerStepThrough]
public static Param<string> Matches(this Param<string> param, string match)
{
return Matches(param, new Regex(match));
}
[DebuggerStepThrough]
public static Param<string> Matches(this Param<string> param, Regex match)
{
if (!match.IsMatch(param.Value))
{
throw ExceptionFactory.CreateForParamValidation(param.Name, ExceptionMessages.EnsureExtensions_NoMatch.Inject(param.Value, match));
}
return param;
}
[DebuggerStepThrough]
public static Param<string> IsRelativePath(this Param<string> param)
{
if (string.IsNullOrWhiteSpace(param.Value))
throw ExceptionFactory.CreateForParamValidation(param.Name, ExceptionMessages.EnsureExtensions_IsNotNullOrWhiteSpace);
if (!param.Value.EndsWith("\\"))
{
throw ExceptionFactory.CreateForParamValidation(param.Name, string.Format("value [{0}] is not a valid relative path. relative paths must end with \\", param.Value));
}
if (param.Value.Length > 1 && param.Value.StartsWith("\\"))
{
throw ExceptionFactory.CreateForParamValidation(param.Name, string.Format("value [{0}] is not a valid relative path. relative paths can not start with \\", param.Value));
}
return param;
}
private static readonly Regex windowsInvalidPathRegex = new Regex(@"[/*<>""|]", RegexOptions.Compiled | RegexOptions.IgnoreCase);
private static readonly Regex windowsPathRegex = new Regex(@"^[a-z]:\\", RegexOptions.Compiled | RegexOptions.IgnoreCase);
[DebuggerStepThrough]
public static Param<string> IsValidPath(this Param<string> param)
{
if (string.IsNullOrWhiteSpace(param.Value))
throw ExceptionFactory.CreateForParamValidation(param.Name, ExceptionMessages.EnsureExtensions_IsNotNullOrWhiteSpace);
if (OsInfo.IsLinux)
{
if (!param.Value.StartsWith(Path.DirectorySeparatorChar.ToString()))
{
throw ExceptionFactory.CreateForParamValidation(param.Name, string.Format("value [{0}] is not a valid *nix path. paths must start with /", param.Value));
}
}
else
{
if (windowsInvalidPathRegex.IsMatch(param.Value))
{
throw ExceptionFactory.CreateForParamValidation(param.Name, string.Format("value [{0}] is not a valid Windows path. It contains invalid characters", param.Value));
}
//Network path
if (param.Value.StartsWith(Path.DirectorySeparatorChar.ToString())) return param;
if (!windowsPathRegex.IsMatch(param.Value))
{
throw ExceptionFactory.CreateForParamValidation(param.Name, string.Format("value [{0}] is not a valid Windows path. paths must be a full path eg. C:\\Windows", param.Value));
}
}
return param;
}
}
}