private int ParseHunks(FileHeader fh, int c, int end)
{
byte[] buf = fh.buf;
while (c < end)
{
// If we see a file header at this point, we have all of the
// hunks for our current file. We should stop and report back
// with this position so it can be parsed again later.
//
if (RawParseUtils.Match(buf, c, DIFF_GIT) >= 0)
{
break;
}
if (RawParseUtils.Match(buf, c, DIFF_CC) >= 0)
{
break;
}
if (RawParseUtils.Match(buf, c, DIFF_COMBINED) >= 0)
{
break;
}
if (RawParseUtils.Match(buf, c, FileHeader.OLD_NAME) >= 0)
{
break;
}
if (RawParseUtils.Match(buf, c, FileHeader.NEW_NAME) >= 0)
{
break;
}
if (FileHeader.IsHunkHdr(buf, c, end) == fh.GetParentCount())
{
HunkHeader h = fh.NewHunkHeader(c);
h.ParseHeader();
c = h.ParseBody(this, end);
h.endOffset = c;
fh.AddHunk(h);
if (c < end)
{
switch (buf[c])
{
case (byte)('@'):
case (byte)('d'):
case (byte)('\n'):
{
break;
}
default:
{
if (RawParseUtils.Match(buf, c, SIG_FOOTER) < 0 && RawParseUtils.Match(buf, c, SIG_FOOTER_WINDOWS) < 0)
{
Warn(buf, c, JGitText.Get().unexpectedHunkTrailer);
}
break;
}
}
}
continue;
}
int eol = RawParseUtils.NextLF(buf, c);
if (fh.GetHunks().IsEmpty() && (RawParseUtils.Match(buf, c, GIT_BINARY) >= 0 || RawParseUtils.Match(buf, c, GIT_BINARY_WINDOWS) >= 0))
{
fh.patchType = FileHeader.PatchType.GIT_BINARY;
return(ParseGitBinary(fh, eol, end));
}
if (fh.GetHunks().IsEmpty() &&
((BIN_TRAILER.Length < eol - c && RawParseUtils.Match(buf, eol - BIN_TRAILER.Length, BIN_TRAILER) >= 0) ||
(BIN_TRAILER_WINDOWS.Length < eol - c && RawParseUtils.Match(buf, eol - BIN_TRAILER_WINDOWS.Length, BIN_TRAILER_WINDOWS) >= 0)) &&
MatchAny(buf, c, BIN_HEADERS
))
{
// The patch is a binary file diff, with no deltas.
//
fh.patchType = FileHeader.PatchType.BINARY;
return(eol);
}
// Skip this line and move to the next. Its probably garbage
// after the last hunk of a file.
//
c = eol;
}
if (fh.GetHunks().IsEmpty() && fh.GetPatchType() == FileHeader.PatchType.UNIFIED &&
!fh.HasMetaDataChanges())
{
// Hmm, an empty patch? If there is no metadata here we
// really have a binary patch that we didn't notice above.
//
fh.patchType = FileHeader.PatchType.BINARY;
}
return(c);
}
private int ParseFile(byte[] buf, int c, int end)
{
while (c < end)
{
if (FileHeader.IsHunkHdr(buf, c, end) >= 1)
{
// If we find a disconnected hunk header we might
// have missed a file header previously. The hunk
// isn't valid without knowing where it comes from.
//
Error(buf, c, JGitText.Get().hunkDisconnectedFromFile);
c = RawParseUtils.NextLF(buf, c);
continue;
}
// Valid git style patch?
//
if (RawParseUtils.Match(buf, c, DIFF_GIT) >= 0)
{
return(ParseDiffGit(buf, c, end));
}
if (RawParseUtils.Match(buf, c, DIFF_CC) >= 0)
{
return(ParseDiffCombined(DIFF_CC, buf, c, end));
}
if (RawParseUtils.Match(buf, c, DIFF_COMBINED) >= 0)
{
return(ParseDiffCombined(DIFF_COMBINED, buf, c, end));
}
// Junk between files? Leading junk? Traditional
// (non-git generated) patch?
//
int n = RawParseUtils.NextLF(buf, c);
if (n >= end)
{
// Patches cannot be only one line long. This must be
// trailing junk that we should ignore.
//
return(end);
}
if (n - c < 6)
{
// A valid header must be at least 6 bytes on the
// first line, e.g. "--- a/b\n".
//
c = n;
continue;
}
if (RawParseUtils.Match(buf, c, FileHeader.OLD_NAME) >= 0 && RawParseUtils.Match(
buf, n, FileHeader.NEW_NAME) >= 0)
{
// Probably a traditional patch. Ensure we have at least
// a "@@ -0,0" smelling line next. We only check the "@@ -".
//
int f = RawParseUtils.NextLF(buf, n);
if (f >= end)
{
return(end);
}
if (FileHeader.IsHunkHdr(buf, f, end) == 1)
{
return(ParseTraditionalPatch(buf, c, end));
}
}
c = n;
}
return(c);
}
