Import sources from 2011-03-30 iso image

1 files changed, 154 insertions, 0 deletions

diff --git a/sys/src/cmd/aux/antiword/finddata.c b/sys/src/cmd/aux/antiword/finddata.c
new file mode 100755
index 000000000..441030c5a
--- /dev/null
+++ b/sys/src/cmd/aux/antiword/finddata.c
@@ -0,0 +1,154 @@
+/*
+ * finddata.c
+ * Copyright (C) 2000-2002 A.J. van Os; Released under GPL
+ *
+ * Description:
+ * Find the blocks that contain the data of MS Word files
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "antiword.h"
+
+
+/*
+ * bAddDataBlocks - Add the blocks to the data block list
+ *
+ * Returns TRUE when successful, otherwise FALSE
+ */
+BOOL
+bAddDataBlocks(ULONG ulDataPosFirst, ULONG ulTotalLength,
+	ULONG ulStartBlock, const ULONG *aulBBD, size_t tBBDLen)
+{
+	data_block_type	tDataBlock;
+	ULONG	ulDataPos, ulOffset, ulIndex;
+	long	lToGo;
+	BOOL	bSuccess;
+
+	fail(ulTotalLength > (ULONG)LONG_MAX);
+	fail(ulStartBlock > MAX_BLOCKNUMBER && ulStartBlock != END_OF_CHAIN);
+	fail(aulBBD == NULL);
+
+	NO_DBG_HEX(ulDataPosFirst);
+	NO_DBG_DEC(ulTotalLength);
+
+	lToGo = (long)ulTotalLength;
+
+	ulDataPos = ulDataPosFirst;
+	ulOffset = ulDataPosFirst;
+	for (ulIndex = ulStartBlock;
+	     ulIndex != END_OF_CHAIN && lToGo > 0;
+	     ulIndex = aulBBD[ulIndex]) {
+		if (ulIndex == UNUSED_BLOCK || ulIndex >= (ULONG)tBBDLen) {
+			DBG_DEC(ulIndex);
+			DBG_DEC(tBBDLen);
+			return FALSE;
+		}
+		if (ulOffset >= BIG_BLOCK_SIZE) {
+			ulOffset -= BIG_BLOCK_SIZE;
+			continue;
+		}
+		tDataBlock.ulFileOffset =
+			(ulIndex + 1) * BIG_BLOCK_SIZE + ulOffset;
+		tDataBlock.ulDataPos = ulDataPos;
+		tDataBlock.ulLength = min(BIG_BLOCK_SIZE - ulOffset,
+						(ULONG)lToGo);
+		fail(tDataBlock.ulLength > BIG_BLOCK_SIZE);
+		ulOffset = 0;
+		if (!bAdd2DataBlockList(&tDataBlock)) {
+			DBG_HEX(tDataBlock.ulFileOffset);
+			DBG_HEX(tDataBlock.ulDataPos);
+			DBG_DEC(tDataBlock.ulLength);
+			return FALSE;
+		}
+		ulDataPos += tDataBlock.ulLength;
+		lToGo -= (long)tDataBlock.ulLength;
+	}
+	bSuccess = lToGo == 0 ||
+		(ulTotalLength == (ULONG)LONG_MAX && ulIndex == END_OF_CHAIN);
+	DBG_DEC_C(!bSuccess, lToGo);
+	DBG_DEC_C(!bSuccess, ulTotalLength);
+	DBG_DEC_C(!bSuccess, ulIndex);
+	return bSuccess;
+} /* end of bAddDataBlocks */
+
+/*
+ * bGet6DocumentData - make a list of the data blocks of Word 6/7 files
+ *
+ * Code for "fast saved" files.
+ *
+ * Returns TRUE when successful, otherwise FALSE
+ */
+BOOL
+bGet6DocumentData(FILE *pFile, ULONG ulStartBlock,
+	const ULONG *aulBBD, size_t tBBDLen, const UCHAR *aucHeader)
+{
+	UCHAR	*aucBuffer;
+	ULONG	ulBeginTextInfo, ulOffset, ulTotLength;
+	size_t	tTextInfoLen;
+	int	iIndex, iOff, iType, iLen, iPieces;
+
+	DBG_MSG("bGet6DocumentData");
+
+	fail(pFile == NULL);
+	fail(aulBBD == NULL);
+	fail(aucHeader == NULL);
+
+	ulBeginTextInfo = ulGetLong(0x160, aucHeader);
+	DBG_HEX(ulBeginTextInfo);
+	tTextInfoLen = (size_t)ulGetLong(0x164, aucHeader);
+	DBG_DEC(tTextInfoLen);
+
+	aucBuffer = xmalloc(tTextInfoLen);
+	if (!bReadBuffer(pFile, ulStartBlock,
+			aulBBD, tBBDLen, BIG_BLOCK_SIZE,
+			aucBuffer, ulBeginTextInfo, tTextInfoLen)) {
+		aucBuffer = xfree(aucBuffer);
+		return FALSE;
+	}
+	NO_DBG_PRINT_BLOCK(aucBuffer, tTextInfoLen);
+
+	iOff = 0;
+	while (iOff < (int)tTextInfoLen) {
+		iType = (int)ucGetByte(iOff, aucBuffer);
+		iOff++;
+		if (iType == 0) {
+			iOff++;
+			continue;
+		}
+		iLen = (int)usGetWord(iOff, aucBuffer);
+		iOff += 2;
+		if (iType == 1) {
+			iOff += iLen;
+			continue;
+		}
+		if (iType != 2) {
+			werr(0, "Unknown type of 'fastsaved' format");
+			aucBuffer = xfree(aucBuffer);
+			return FALSE;
+		}
+		/* Type 2 */
+		NO_DBG_DEC(iLen);
+		iOff += 2;
+		iPieces = (iLen - 4) / 12;
+		DBG_DEC(iPieces);
+		for (iIndex = 0; iIndex < iPieces; iIndex++) {
+			ulOffset = ulGetLong(
+				iOff + (iPieces + 1) * 4 + iIndex * 8 + 2,
+				aucBuffer);
+			ulTotLength = ulGetLong(iOff + (iIndex + 1) * 4,
+						aucBuffer) -
+					ulGetLong(iOff + iIndex * 4,
+						aucBuffer);
+			if (!bAddDataBlocks(ulOffset, ulTotLength,
+					ulStartBlock,
+					aulBBD, tBBDLen)) {
+				aucBuffer = xfree(aucBuffer);
+				return FALSE;
+			}
+		}
+		break;
+	}
+	aucBuffer = xfree(aucBuffer);
+	return TRUE;
+} /* end of bGet6DocumentData */