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Bug 508229 Clean up whitespace in nsBinHexDecoder

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r=biesi
This commit is contained in:
timeless@mozdev.org 2009-08-05 14:41:45 -04:00
parent ff45688575
commit 4cd5ae33cc
2 changed files with 314 additions and 309 deletions
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545
netwerk/streamconv/converters/nsBinHexDecoder.cpp
View File

@ -52,7 +52,7 @@
#include "nsMimeTypes.h"
#define DATA_BUFFER_SIZE (4096*2)
#define DATA_BUFFER_SIZE (4096*2)
#define NS_STREAM_CONVERTER_SEGMENT_SIZE (4*1024)
#define NS_STREAM_CONVERTER_BUFFER_SIZE (32*1024)
@ -62,14 +62,14 @@
#define LF '\012'
nsBinHexDecoder::nsBinHexDecoder() :
mState(0), mCRC(0), mFileCRC(0), mOctetin(26),
mDonePos(3), mInCRC(0), mCount(0), mMarker(0), mPosInbuff(0),
mState(0), mCRC(0), mFileCRC(0), mOctetin(26),
mDonePos(3), mInCRC(0), mCount(0), mMarker(0), mPosInbuff(0),
mPosOutputBuff(0)
{
mDataBuffer = nsnull;
mOutgoingBuffer = nsnull;
mOctetBuf.val = 0;
mOctetBuf.val = 0;
mHeader.type = 0;
mHeader.creator = 0;
mHeader.flags = 0;
@ -89,33 +89,33 @@ NS_IMPL_ADDREF(nsBinHexDecoder)
NS_IMPL_RELEASE(nsBinHexDecoder)
NS_INTERFACE_MAP_BEGIN(nsBinHexDecoder)
NS_INTERFACE_MAP_ENTRY(nsIStreamConverter)
NS_INTERFACE_MAP_ENTRY(nsIStreamListener)
NS_INTERFACE_MAP_ENTRY(nsIRequestObserver)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_ENTRY(nsIStreamConverter)
NS_INTERFACE_MAP_ENTRY(nsIStreamListener)
NS_INTERFACE_MAP_ENTRY(nsIRequestObserver)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
// The binhex 4.0 decoder table....
static char binhex_decode[256] =
static char binhex_decode[256] =
{
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, -1, -1,
13, 14, 15, 16, 17, 18, 19, -1, 20, 21, -1, -1, -1, -1, -1, -1,
22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, -1,
37, 38, 39, 40, 41, 42, 43, -1, 44, 45, 46, 47, -1, -1, -1, -1,
48, 49, 50, 51, 52, 53, 54, -1, 55, 56, 57, 58, 59, 60, -1, -1,
61, 62, 63, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, -1, -1,
13, 14, 15, 16, 17, 18, 19, -1, 20, 21, -1, -1, -1, -1, -1, -1,
22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, -1,
37, 38, 39, 40, 41, 42, 43, -1, 44, 45, 46, 47, -1, -1, -1, -1,
48, 49, 50, 51, 52, 53, 54, -1, 55, 56, 57, 58, 59, 60, -1, -1,
61, 62, 63, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
};
#define BHEXVAL(c) (binhex_decode[(unsigned char) c])
@ -128,19 +128,19 @@ NS_IMETHODIMP
nsBinHexDecoder::Convert(nsIInputStream *aFromStream,
const char *aFromType,
const char *aToType,
nsISupports *aCtxt,
nsIInputStream **aResultStream)
nsISupports *aCtxt,
nsIInputStream **aResultStream)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsBinHexDecoder::AsyncConvertData(const char *aFromType,
nsBinHexDecoder::AsyncConvertData(const char *aFromType,
const char *aToType,
nsIStreamListener *aListener,
nsIStreamListener *aListener,
nsISupports *aCtxt)
{
NS_ASSERTION(aListener && aFromType && aToType,
NS_ASSERTION(aListener && aFromType && aToType,
"null pointer passed into bin hex converter");
// hook up our final listener. this guy gets the various On*() calls we want to throw
@ -154,17 +154,17 @@ nsBinHexDecoder::AsyncConvertData(const char *aFromType,
// nsIStreamListener methods...
//////////////////////////////////////////////////////
NS_IMETHODIMP
nsBinHexDecoder::OnDataAvailable(nsIRequest* request,
nsISupports *aCtxt,
nsIInputStream *aStream,
PRUint32 aSourceOffset,
PRUint32 aCount)
nsBinHexDecoder::OnDataAvailable(nsIRequest* request,
nsISupports *aCtxt,
nsIInputStream *aStream,
PRUint32 aSourceOffset,
PRUint32 aCount)
{
nsresult rv = NS_OK;
if (mOutputStream && mDataBuffer && aCount > 0)
{
PRUint32 numBytesRead = 0;
PRUint32 numBytesRead = 0;
while (aCount > 0) // while we still have bytes to copy...
{
aStream->Read(mDataBuffer, PR_MIN(aCount, DATA_BUFFER_SIZE - 1), &numBytesRead);
@ -183,285 +183,290 @@ nsBinHexDecoder::OnDataAvailable(nsIRequest* request,
nsresult nsBinHexDecoder::ProcessNextState(nsIRequest * aRequest, nsISupports * aContext)
{
nsresult status = NS_OK;
PRUint16 tmpcrc, cval;
unsigned char ctmp, c = mRlebuf;
/* do CRC */
ctmp = mInCRC ? c : 0;
cval = mCRC & 0xf000;
tmpcrc = ((PRUint16) (mCRC << 4) | (ctmp >> 4)) ^ (cval | (cval >> 7) | (cval >> 12));
cval = tmpcrc & 0xf000;
mCRC = ((PRUint16) (tmpcrc << 4) | (ctmp & 0x0f)) ^ (cval | (cval >> 7) | (cval >> 12));
nsresult status = NS_OK;
PRUint16 tmpcrc, cval;
unsigned char ctmp, c = mRlebuf;
/* handle state */
switch (mState)
{
case BINHEX_STATE_START:
mState = BINHEX_STATE_FNAME;
mCount = 1;
/* do CRC */
ctmp = mInCRC ? c : 0;
cval = mCRC & 0xf000;
tmpcrc = ((PRUint16) (mCRC << 4) | (ctmp >> 4)) ^ (cval | (cval >> 7) | (cval >> 12));
cval = tmpcrc & 0xf000;
mCRC = ((PRUint16) (tmpcrc << 4) | (ctmp & 0x0f)) ^ (cval | (cval >> 7) | (cval >> 12));
/* handle state */
switch (mState)
{
case BINHEX_STATE_START:
mState = BINHEX_STATE_FNAME;
mCount = 1;
// c & 63 returns the length of mName. So if we need the length, that's how
// you can figure it out...for now we are storing it in the first byte of mName
*(mName) = (c & 63);
break;
case BINHEX_STATE_FNAME:
mName[mCount] = c;
if (mCount++ > *(mName)) // the first byte of mName is the length...
{
*(mName) = (c & 63);
break;
case BINHEX_STATE_FNAME:
mName[mCount] = c;
if (mCount++ > *(mName)) // the first byte of mName is the length...
{
// okay we've figured out the file name....set the content type on the channel
// based on the file name AND issue our delayed on start request....
// be sure to skip the first byte of mName which is the size of the file name
SetContentType(aRequest, &mName[1]);
// now propagate the on start request
mNextListener->OnStartRequest(aRequest, aContext);
mState = BINHEX_STATE_HEADER;
mCount = 0;
}
break;
case BINHEX_STATE_HEADER:
((char *) &mHeader)[mCount] = c;
if (++mCount == 18)
{
if (sizeof(binhex_header) != 18) /* fix an alignment problem in some OSes */
{
char *p = (char *)&mHeader;
p += 19;
for (c = 0; c < 8; c++)
mState = BINHEX_STATE_HEADER;
mCount = 0;
}
break;
case BINHEX_STATE_HEADER:
((char *) &mHeader)[mCount] = c;
if (++mCount == 18)
{
if (sizeof(binhex_header) != 18) /* fix an alignment problem in some OSes */
{
char *p = (char *)&mHeader;
p += 19;
for (c = 0; c < 8; c++)
{
*p = *(p-2); p--;
*p = *(p-2);
--p;
}
}
}
mState = BINHEX_STATE_HCRC;
mInCRC = 1;
mCount = 0;
}
break;
case BINHEX_STATE_DFORK:
case BINHEX_STATE_RFORK:
mOutgoingBuffer[mPosOutputBuff++] = c;
if (-- mCount == 0)
{
/* only output data fork in the non-mac system. */
if (mState == BINHEX_STATE_DFORK)
{
PRUint32 numBytesWritten = 0;
mInCRC = 1;
mCount = 0;
}
break;
case BINHEX_STATE_DFORK:
case BINHEX_STATE_RFORK:
mOutgoingBuffer[mPosOutputBuff++] = c;
if (--mCount == 0)
{
/* only output data fork in the non-mac system. */
if (mState == BINHEX_STATE_DFORK)
{
PRUint32 numBytesWritten = 0;
mOutputStream->Write(mOutgoingBuffer, mPosOutputBuff, &numBytesWritten);
if (PRInt32(numBytesWritten) != mPosOutputBuff)
status = NS_ERROR_FAILURE;
// now propagate the data we just wrote
mNextListener->OnDataAvailable(aRequest, aContext, mInputStream, 0, numBytesWritten);
}
else
status = NS_OK; /* do nothing for resource fork. */
}
else
status = NS_OK; /* do nothing for resource fork. */
mPosOutputBuff = 0;
if (status != NS_OK)
mState = BINHEX_STATE_DONE;
else
++mState;
mPosOutputBuff = 0;
if (status != NS_OK)
mState = BINHEX_STATE_DONE;
else
mState ++;
mInCRC = 1;
}
else if (mPosOutputBuff >= DATA_BUFFER_SIZE)
{
if (mState == BINHEX_STATE_DFORK)
{
PRUint32 numBytesWritten = 0;
}
else if (mPosOutputBuff >= DATA_BUFFER_SIZE)
{
if (mState == BINHEX_STATE_DFORK)
{
PRUint32 numBytesWritten = 0;
mOutputStream->Write(mOutgoingBuffer, mPosOutputBuff, &numBytesWritten);
if (PRInt32(numBytesWritten) != mPosOutputBuff)
status = NS_ERROR_FAILURE;
mNextListener->OnDataAvailable(aRequest, aContext, mInputStream, 0, numBytesWritten);
mPosOutputBuff = 0;
}
}
break;
case BINHEX_STATE_HCRC:
case BINHEX_STATE_DCRC:
case BINHEX_STATE_RCRC:
if (!mCount++)
mFileCRC = (unsigned short) c << 8;
else
{
if ((mFileCRC | c) != mCRC)
{
mState = BINHEX_STATE_DONE;
break;
}
/* passed the CRC check!!!*/
mCRC = 0;
if (++ mState == BINHEX_STATE_FINISH)
{
}
}
break;
case BINHEX_STATE_HCRC:
case BINHEX_STATE_DCRC:
case BINHEX_STATE_RCRC:
if (!mCount++)
mFileCRC = (unsigned short) c << 8;
else
{
if ((mFileCRC | c) != mCRC)
{
mState = BINHEX_STATE_DONE;
break;
}
/* passed the CRC check!!!*/
mCRC = 0;
if (++mState == BINHEX_STATE_FINISH)
{
// when we reach the finished state...fire an on stop request on the event listener...
mNextListener->OnStopRequest(aRequest, aContext, NS_OK);
mNextListener = 0;
/* now We are done with everything. */
mState++;
break;
}
if (mState == BINHEX_STATE_DFORK)
mCount = PR_ntohl(mHeader.dlen);
else
{
/* now We are done with everything. */
++mState;
break;
}
if (mState == BINHEX_STATE_DFORK)
mCount = PR_ntohl(mHeader.dlen);
else
{
// we aren't processing the resurce Fork. uncomment this line if we make this converter
// smart enough to do this in the future.
// mCount = PR_ntohl(mHeader.rlen); /* it should in host byte order */
mCount = 0;
}
if (mCount)
mInCRC = 0;
else
/* nothing inside, so skip to the next state. */
mState ++;
}
break;
}
return NS_OK;
// mCount = PR_ntohl(mHeader.rlen); /* it should in host byte order */
mCount = 0;
}
if (mCount) {
mInCRC = 0;
} else {
/* nothing inside, so skip to the next state. */
++mState;
}
}
break;
}
return NS_OK;
}
nsresult nsBinHexDecoder::ProcessNextChunk(nsIRequest * aRequest, nsISupports * aContext, PRUint32 numBytesInBuffer)
{
PRBool foundStart;
PRInt16 octetpos, c = 0;
PRUint32 val;
mPosInDataBuffer = 0; // use member variable.
PRBool foundStart;
PRInt16 octetpos, c = 0;
PRUint32 val;
mPosInDataBuffer = 0; // use member variable.
NS_ENSURE_TRUE(numBytesInBuffer > 0, NS_ERROR_FAILURE);
// if it is the first time, seek to the right start place.
if (mState == BINHEX_STATE_START)
{
foundStart = PR_FALSE;
// go through the line, until we get a ':'
while (mPosInDataBuffer < numBytesInBuffer)
{
c = mDataBuffer[mPosInDataBuffer++];
while (c == CR || c == LF)
{
if (mPosInDataBuffer >= numBytesInBuffer)
break;
c = mDataBuffer[mPosInDataBuffer++];
if (c == ':')
{
foundStart = PR_TRUE;
break;
}
}
if (foundStart) break; /* we got the start point. */
}
if (mPosInDataBuffer >= numBytesInBuffer)
return NS_OK; /* we meet buff end before we get the start point, wait till next fills. */
if (c != ':')
return NS_ERROR_FAILURE; /* can't find the start character. */
}
while (mState != BINHEX_STATE_DONE)
{
/* fill in octetbuf */
do
{
if (mPosInDataBuffer >= numBytesInBuffer)
return NS_OK; /* end of buff, go on for the nxet calls. */
c = GetNextChar(numBytesInBuffer);
if (c == 0) return NS_OK;
if ((val = BHEXVAL(c)) == PRUint32(-1))
{
/* we incount an invalid character. */
if (c)
{
/* rolling back. */
mDonePos --;
if (mOctetin >= 14) mDonePos--;
if (mOctetin >= 20) mDonePos--;
}
break;
}
mOctetBuf.val |= val << mOctetin;
}
while ((mOctetin -= 6) > 2);
/* handle decoded characters -- run length encoding (rle) detection */
// We put decoded chars into mOctetBuf.val in order from high to low (via
// bitshifting, above). But we want to byte-address them, so we want the
// first byte to correspond to the high byte. In other words, we want
// these bytes to be in network order.
mOctetBuf.val = PR_htonl(mOctetBuf.val);
// if it is the first time, seek to the right start place.
if (mState == BINHEX_STATE_START)
{
foundStart = PR_FALSE;
// go through the line, until we get a ':'
while (mPosInDataBuffer < numBytesInBuffer)
{
c = mDataBuffer[mPosInDataBuffer++];
while (c == CR || c == LF)
{
if (mPosInDataBuffer >= numBytesInBuffer)
break;
for (octetpos = 0; octetpos < mDonePos; ++octetpos)
{
c = mOctetBuf.c[octetpos];
if (c == 0x90 && !mMarker++)
continue;
if (mMarker)
{
if (c == 0)
{
mRlebuf = 0x90;
ProcessNextState(aRequest, aContext);
}
else
{
while (--c > 0) /* we are in the run lenght mode */
ProcessNextState(aRequest, aContext);
}
mMarker = 0;
}
else
{
mRlebuf = (unsigned char) c;
ProcessNextState(aRequest, aContext);
}
if (mState >= BINHEX_STATE_DONE)
break;
}
/* prepare for next 3 characters. */
if (mDonePos < 3 && mState < BINHEX_STATE_DONE)
mState = BINHEX_STATE_DONE;
mOctetin = 26;
mOctetBuf.val = 0;
}
c = mDataBuffer[mPosInDataBuffer++];
if (c == ':')
{
foundStart = PR_TRUE;
break;
}
}
if (foundStart) break; /* we got the start point. */
}
return NS_OK;
if (mPosInDataBuffer >= numBytesInBuffer)
return NS_OK; /* we meet buff end before we get the start point, wait till next fills. */
if (c != ':')
return NS_ERROR_FAILURE; /* can't find the start character. */
}
while (mState != BINHEX_STATE_DONE)
{
/* fill in octetbuf */
do
{
if (mPosInDataBuffer >= numBytesInBuffer)
return NS_OK; /* end of buff, go on for the nxet calls. */
c = GetNextChar(numBytesInBuffer);
if (c == 0) return NS_OK;
if ((val = BHEXVAL(c)) == PRUint32(-1))
{
/* we incount an invalid character. */
if (c)
{
/* rolling back. */
--mDonePos;
if (mOctetin >= 14)
--mDonePos;
if (mOctetin >= 20)
--mDonePos;
}
break;
}
mOctetBuf.val |= val << mOctetin;
}
while ((mOctetin -= 6) > 2);
/* handle decoded characters -- run length encoding (rle) detection */
// We put decoded chars into mOctetBuf.val in order from high to low (via
// bitshifting, above). But we want to byte-address them, so we want the
// first byte to correspond to the high byte. In other words, we want
// these bytes to be in network order.
mOctetBuf.val = PR_htonl(mOctetBuf.val);
for (octetpos = 0; octetpos < mDonePos; ++octetpos)
{
c = mOctetBuf.c[octetpos];
if (c == 0x90 && !mMarker++)
continue;
if (mMarker)
{
if (c == 0)
{
mRlebuf = 0x90;
ProcessNextState(aRequest, aContext);
}
else
{
/* we are in the run length mode */
while (--c > 0)
ProcessNextState(aRequest, aContext);
}
mMarker = 0;
}
else
{
mRlebuf = (unsigned char) c;
ProcessNextState(aRequest, aContext);
}
if (mState >= BINHEX_STATE_DONE)
break;
}
/* prepare for next 3 characters. */
if (mDonePos < 3 && mState < BINHEX_STATE_DONE)
mState = BINHEX_STATE_DONE;
mOctetin = 26;
mOctetBuf.val = 0;
}
return NS_OK;
}
PRInt16 nsBinHexDecoder::GetNextChar(PRUint32 numBytesInBuffer)
{
char c = 0;
while (mPosInDataBuffer < numBytesInBuffer)
{
c = mDataBuffer[mPosInDataBuffer++];
if (c != LF && c != CR)
break;
}
return (c == LF || c == CR) ? 0 : (int) c;
char c = 0;
while (mPosInDataBuffer < numBytesInBuffer)
{
c = mDataBuffer[mPosInDataBuffer++];
if (c != LF && c != CR)
break;
}
return (c == LF || c == CR) ? 0 : (int) c;
}
//////////////////////////////////////////////////////
@ -469,7 +474,7 @@ PRInt16 nsBinHexDecoder::GetNextChar(PRUint32 numBytesInBuffer)
//////////////////////////////////////////////////////
NS_IMETHODIMP
nsBinHexDecoder::OnStartRequest(nsIRequest* request, nsISupports *aCtxt)
nsBinHexDecoder::OnStartRequest(nsIRequest* request, nsISupports *aCtxt)
{
nsresult rv = NS_OK;
@ -504,7 +509,7 @@ nsresult nsBinHexDecoder::SetContentType(nsIRequest* aRequest,
nsresult rv;
nsCOMPtr<nsIChannel> channel(do_QueryInterface(aRequest, &rv));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIMIMEService> mimeService(do_GetService("@mozilla.org/mime;1", &rv));
NS_ENSURE_SUCCESS(rv, rv);

78
netwerk/streamconv/converters/nsBinHexDecoder.h
View File

@ -38,16 +38,16 @@
// A decoder for Mac Bin Hex 4.0.
// This decoder is currently only intended to be used on NON-Mac platforms. It isn't hooked up to
// This decoder is currently only intended to be used on NON-Mac platforms. It isn't hooked up to
// code which would actually save the file to disk. As a result, we can't leverage the resource fork.
// This makes this decoder most unhelpful for the Mac. Our assumption is that if you save a bin hex file
// on the mac and try to open it, stuffit or some other tool is already going to be on the Mac which knows how
// to handle bin hex. On windows and unix, that's not the case. We need client code to strip out the data fork.
// So this decoder currently just strips out the data fork.
// to handle bin hex. On windows and unix, that's not the case. We need client code to strip out the data fork.
// So this decoder currently just strips out the data fork.
// Note: it's possible that we can eventually turn this decoder into both a decoder and into a file stream (much
// like the apple double decoder) so on the Mac, if we are saving to disk, we can invoke the decoder as a file stream
// and it will process the resource fork and do the right magic.
// and it will process the resource fork and do the right magic.
#ifndef nsBinHexDecoder_h__
#define nsBinHexDecoder_h__
@ -60,36 +60,36 @@
#include "nsCOMPtr.h"
#include "nsString.h"
#define NS_BINHEXDECODER_CID \
#define NS_BINHEXDECODER_CID \
{ /* 301DEA42-6850-4cda-8945-81F7DBC2186B */ \
0x301dea42, 0x6850, 0x4cda, \
{ 0x89, 0x45, 0x81, 0xf7, 0xdb, 0xc2, 0x18, 0x6b } \
0x301dea42, 0x6850, 0x4cda, \
{ 0x89, 0x45, 0x81, 0xf7, 0xdb, 0xc2, 0x18, 0x6b } \
}
typedef struct _binhex_header
{
PRUint32 type, creator;
PRUint16 flags;
PRInt32 dlen, rlen;
PRUint32 type, creator;
PRUint16 flags;
PRInt32 dlen, rlen;
} binhex_header;
typedef union
typedef union
{
unsigned char c[4];
PRUint32 val;
unsigned char c[4];
PRUint32 val;
} longbuf;
#define BINHEX_STATE_START 0
#define BINHEX_STATE_FNAME 1
#define BINHEX_STATE_HEADER 2
#define BINHEX_STATE_HCRC 3
#define BINHEX_STATE_DFORK 4
#define BINHEX_STATE_DCRC 5
#define BINHEX_STATE_RFORK 6
#define BINHEX_STATE_RCRC 7
#define BINHEX_STATE_FINISH 8
#define BINHEX_STATE_DONE 9
/* #define BINHEX_STATE_ERROR 10 */
#define BINHEX_STATE_START 0
#define BINHEX_STATE_FNAME 1
#define BINHEX_STATE_HEADER 2
#define BINHEX_STATE_HCRC 3
#define BINHEX_STATE_DFORK 4
#define BINHEX_STATE_DCRC 5
#define BINHEX_STATE_RFORK 6
#define BINHEX_STATE_RCRC 7
#define BINHEX_STATE_FINISH 8
#define BINHEX_STATE_DONE 9
/* #define BINHEX_STATE_ERROR 10 */
class nsBinHexDecoder : public nsIStreamConverter
{
@ -121,19 +121,19 @@ protected:
// the input and output streams form a pipe...they need to be passed around together..
nsCOMPtr<nsIOutputStream> mOutputStream; // output stream
nsCOMPtr<nsIInputStream> mInputStream;
nsCOMPtr<nsIInputStream> mInputStream;
PRInt16 mState; /* current state */
PRUint16 mCRC; /* cumulative CRC */
PRUint16 mFileCRC; /* CRC value from file */
longbuf mOctetBuf; /* buffer for decoded 6-bit values */
PRInt16 mOctetin; /* current input position in octetbuf */
PRInt16 mDonePos; /* ending position in octetbuf */
PRInt16 mInCRC; /* flag set when reading a CRC */
PRInt16 mState; /* current state */
PRUint16 mCRC; /* cumulative CRC */
PRUint16 mFileCRC; /* CRC value from file */
longbuf mOctetBuf; /* buffer for decoded 6-bit values */
PRInt16 mOctetin; /* current input position in octetbuf */
PRInt16 mDonePos; /* ending position in octetbuf */
PRInt16 mInCRC; /* flag set when reading a CRC */
// Bin Hex Header Information
binhex_header mHeader;
char mName[64]; /* fsspec for the output file */
char mName[64]; /* fsspec for the output file */
// unfortunately we are going to need 2 8K buffers here. One for the data we are currently digesting. Another
// for the outgoing decoded data. I tried getting them to share a buffer but things didn't work out so nicely.
@ -141,13 +141,13 @@ protected:
char * mOutgoingBuffer; // temporary holding pen for the incoming data.
PRUint32 mPosInDataBuffer;
unsigned char mRlebuf; /* buffer for last run length encoding value */
unsigned char mRlebuf; /* buffer for last run length encoding value */
PRInt32 mCount; /* generic counter */
PRInt16 mMarker; /* flag indicating maker */
PRInt32 mPosInbuff; /* the index of the inbuff. */
PRInt32 mPosOutputBuff; /* the position of the out buff. */
PRInt32 mCount; /* generic counter */
PRInt16 mMarker; /* flag indicating maker */
PRInt32 mPosInbuff; /* the index of the inbuff. */
PRInt32 mPosOutputBuff; /* the position of the out buff. */
};
#endif /* nsBinHexDecoder_h__ */