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[Style, DatFile] Add better encoding finding

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This commit is contained in:
Matt Nadareski
2016-09-21 12:47:11 -07:00
parent 08437314df
commit 7212949f56
2 changed files with 30 additions and 30 deletions
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25
SabreTools.Helper/Tools/Style.cs
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@@ -576,6 +576,31 @@ namespace SabreTools.Helper
return false;
}
/// <summary>
/// Determines a text file's encoding by analyzing its byte order mark (BOM).
/// Defaults to ASCII when detection of the text file's endianness fails.
/// http://stackoverflow.com/questions/3825390/effective-way-to-find-any-files-encoding
/// </summary>
/// <param name="filename">The text file to analyze.</param>
/// <returns>The detected encoding.</returns>
public static Encoding GetEncoding(string filename)
{
// Read the BOM
var bom = new byte[4];
using (var file = new FileStream(filename, FileMode.Open, FileAccess.Read))
{
file.Read(bom, 0, 4);
}
// Analyze the BOM
if (bom[0] == 0x2b && bom[1] == 0x2f && bom[2] == 0x76) return Encoding.UTF7;
if (bom[0] == 0xef && bom[1] == 0xbb && bom[2] == 0xbf) return Encoding.UTF8;
if (bom[0] == 0xff && bom[1] == 0xfe) return Encoding.Unicode; //UTF-16LE
if (bom[0] == 0xfe && bom[1] == 0xff) return Encoding.BigEndianUnicode; //UTF-16BE
if (bom[0] == 0 && bom[1] == 0 && bom[2] == 0xfe && bom[3] == 0xff) return Encoding.UTF32;
return Encoding.Default;
}
#endregion
}
}