internal virtual string GetScriptText(Encoding[] charsetGuess)
{
if (GetHunks().IsEmpty())
{
// If we have no hunks then we can safely assume the entire
// patch is a binary style patch, or a meta-data only style
// patch. Either way the encoding of the headers should be
// strictly 7-bit US-ASCII and the body is either 7-bit ASCII
// (due to the base 85 encoding used for a BinaryHunk) or is
// arbitrary noise we have chosen to ignore and not understand
// (e.g. the message "Binary files ... differ").
//
return(RawParseUtils.ExtractBinaryString(buf, startOffset, endOffset));
}
if (charsetGuess != null && charsetGuess.Length != GetParentCount() + 1)
{
throw new ArgumentException(MessageFormat.Format(JGitText.Get().expectedCharacterEncodingGuesses
, Sharpen.Extensions.ValueOf(GetParentCount() + 1)));
}
if (TrySimpleConversion(charsetGuess))
{
Encoding cs = charsetGuess != null ? charsetGuess[0] : null;
if (cs == null)
{
cs = Constants.CHARSET;
}
try
{
return(RawParseUtils.DecodeNoFallback(cs, buf, startOffset, endOffset));
}
catch (CharacterCodingException)
{
}
}
// Try the much slower, more-memory intensive version which
// can handle a character set conversion patch.
StringBuilder r = new StringBuilder(endOffset - startOffset);
// Always treat the headers as US-ASCII; Git file names are encoded
// in a C style escape if any character has the high-bit set.
//
int hdrEnd = GetHunks()[0].GetStartOffset();
for (int ptr = startOffset; ptr < hdrEnd;)
{
int eol = Math.Min(hdrEnd, RawParseUtils.NextLF(buf, ptr));
r.Append(RawParseUtils.ExtractBinaryString(buf, ptr, eol));
ptr = eol;
}
string[] files = ExtractFileLines(charsetGuess);
int[] offsets = new int[files.Length];
foreach (HunkHeader h in GetHunks())
{
h.ExtractFileLines(r, files, offsets);
}
return(r.ToString());
}
