Return specific error codes from command execution.

DiscImageChef.CommonTypes/DiscImageChef.CommonTypes.csproj

@@ -50,6 +50,7 @@
       <Link>Metadata/cicm.cs</Link>
     </Compile>
     <Compile Include="Enums\DeviceType.cs" />
+    <Compile Include="Enums\ErrorNumber.cs" />
     <Compile Include="Enums\Images.cs" />
     <Compile Include="Exceptions\Images.cs" />
     <Compile Include="Extents\ExtentsByte.cs" />

DiscImageChef.CommonTypes/Enums/ErrorNumber.cs

@@ -0,0 +1,115 @@
+// /***************************************************************************
+// The Disc Image Chef
+// ----------------------------------------------------------------------------
+//
+// Filename       : ErrorNumber.cs
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// Component      : Common types.
+//
+// --[ Description ] ----------------------------------------------------------
+//
+//     Defines enumerations of error numbers.
+//
+// --[ License ] --------------------------------------------------------------
+//
+//     Permission is hereby granted, free of charge, to any person obtaining a
+//     copy of this software and associated documentation files (the
+//     "Software"), to deal in the Software without restriction, including
+//     without limitation the rights to use, copy, modify, merge, publish,
+//     distribute, sublicense, and/or sell copies of the Software, and to
+//     permit persons to whom the Software is furnished to do so, subject to
+//     the following conditions:
+//
+//     The above copyright notice and this permission notice shall be included
+//     in all copies or substantial portions of the Software.
+//
+//     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+//     OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+//     MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+//     CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+//     TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+//     SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+// ----------------------------------------------------------------------------
+// Copyright © 2011-2019 Natalia Portillo
+// ****************************************************************************/
+
+namespace DiscImageChef.CommonTypes.Enums
+{
+    /// <summary>
+    ///     Enumerates error codes. Positive for warnings or informative codes, negative for errors.
+    /// </summary>
+    public enum ErrorNumber
+    {
+        /// <summary>No error</summary>
+        NoError = 0,
+        /// <summary>User requested help to be shown</summary>
+        HelpRequested = 1,
+        /// <summary>Command found nothing</summary>
+        NothingFound = 2,
+        /// <summary>Media has been already dumped completely</summary>
+        AlreadyDumped = 3,
+        /// <summary>Image and its sectors cannot be verified</summary>
+        NotVerificable = 4,
+        /// <summary>There are bad sectors and image cannot be verified</summary>
+        BadSectorsImageNotVerified = 5,
+        /// <summary>All sectors are good and image cannot be verified</summary>
+        CorrectSectorsImageNotVerified = 6,
+        /// <summary>Image is bad and sectors cannot be verified</summary>
+        BadImageSectorsNotVerified = 7,
+        /// <summary>Image is bad and there are bad sectors</summary>
+        BadImageBadSectors = 8,
+        /// <summary>All sectors are good and image is bad</summary>
+        CorrectSectorsBadImage = 9,
+        /// <summary>Image is good and sectors cannot be verified</summary>
+        CorrectImageSectorsNotVerified = 10,
+        /// <summary>Image is good and there are bad sectors</summary>
+        CorrectImageBadSectors = 11,
+        /// <summary>Exception has been raised</summary>
+        UnexpectedException = -1,
+        /// <summary>The number of arguments is not as expected</summary>
+        UnexpectedArgumentCount = -2,
+        /// <summary>A required argument is not present</summary>
+        MissingArgument = -3,
+        /// <summary>A specified argument contains an invalid value</summary>
+        InvalidArgument = -4,
+        /// <summary>The specified file cannot be found</summary>
+        FileNotFound = -5,
+        /// <summary>The specified file cannot be opened</summary>
+        CannotOpenFile = -6,
+        /// <summary>The specified encoding cannot be found</summary>
+        EncodingUnknown = -7,
+        /// <summary>The image format has not been recognized</summary>
+        UnrecognizedFormat = -8,
+        /// <summary>The image format failed to open</summary>
+        CannotOpenFormat = -9,
+        /// <summary>The specified metadata sidecar does not have the correct format</summary>
+        InvalidSidecar = -10,
+        /// <summary>The specified resume map does not have the correct format</summary>
+        InvalidResume = -11,
+        /// <summary>The specified destination file/folder already exists</summary>
+        DestinationExists = -12,
+        /// <summary>The specified image format cannot be found</summary>
+        FormatNotFound = -13,
+        /// <summary>More than one format found for the specified search criteria</summary>
+        TooManyFormats = -14,
+        /// <summary>The specified format does not support the specified media</summary>
+        UnsupportedMedia = -15,
+        /// <summary>Data will be lost writing the specified format</summary>
+        DataWillBeLost = -16,
+        /// <summary>Cannot create destination format</summary>
+        CannotCreateFormat = -17,
+        /// <summary>Error writing data</summary>
+        WriteError = -18,
+        /// <summary>Argument expected a directory, but found a file</summary>
+        ExpectedDirectory = -19,
+        /// <summary>Argument expected a file, but found a directory</summary>
+        ExpectedFile = -20,
+        /// <summary>Cannot open device</summary>
+        CannotOpenDevice = -21,
+        /// <summary>The specified operation requires administrative privileges</summary>
+        NotEnoughPermissions = -22
+    }
+}