/// <summary>
/// Reads the text content of a file and determines its Encoding.
/// </summary>
/// <param name="fileName"></param>
/// <param name="ignoreInsignificantWhiteSpace"></param>
/// <param name="progress"></param>
/// <returns></returns>
public static FileContentInfo GetXmlText(string fileName,
bool ignoreInsignificantWhiteSpace,
IDiffProgress progress)
{
var contentInfo = new FileContentInfo();
//// This should be created from in-memory text to save IO and support editing
//// using (StreamReader reader = new StreamReader(fileName, Encoding.Default, true))
//// {
//// contentInfo.Lines = GetXmlTextLines(reader, ignoreInsignificantWhiteSpace, progress);
//// }
// Read the RAW text content
const int DefaultBufferSize = 4096;
const FileOptions DefaultOptions = FileOptions.Asynchronous | FileOptions.SequentialScan;
using (var stream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read, DefaultBufferSize, DefaultOptions))
{
var bom = new byte[4]; // Decode bom (if any) and continue to read text content
stream.Read(bom, 0, 4);
stream.Seek(0, SeekOrigin.Begin);
contentInfo.TextEncoding = FileEx.GetEncoding(bom);
using (StreamReader reader = new StreamReader(stream, contentInfo.TextEncoding))
{
contentInfo.TextContent = reader.ReadToEnd();
}
}
return(contentInfo);
}