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/*
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* rowlist.c
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* Copyright (C) 1998-2004 A.J. van Os; Released under GPL
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*
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* Description:
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* Build, read and destroy a list of Word table-row information
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "antiword.h"
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/*
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* Private structure to hide the way the information
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* is stored from the rest of the program
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*/
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typedef struct row_desc_tag {
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row_block_type tInfo;
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struct row_desc_tag *pNext;
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} row_desc_type;
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/* Variables needed to write the Row Information List */
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static row_desc_type *pAnchor = NULL;
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static row_desc_type *pRowLast = NULL;
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/* Variable needed to read the Row Information List */
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static row_desc_type *pRowCurrent = NULL;
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/*
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* vDestroyRowInfoList - destroy the Row Information List
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*/
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void
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vDestroyRowInfoList(void)
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{
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row_desc_type *pCurr, *pNext;
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DBG_MSG("vDestroyRowInfoList");
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/* Free the Row Information List */
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pCurr = pAnchor;
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while (pCurr != NULL) {
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pNext = pCurr->pNext;
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pCurr = xfree(pCurr);
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pCurr = pNext;
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}
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pAnchor = NULL;
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/* Reset all control variables */
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pRowLast = NULL;
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pRowCurrent = NULL;
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} /* end of vDestroyRowInfoList */
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/*
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* vAdd2RowInfoList - Add an element to the Row Information List
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*/
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void
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vAdd2RowInfoList(const row_block_type *pRowBlock)
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{
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row_desc_type *pListMember;
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short *psTmp;
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int iIndex;
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fail(pRowBlock == NULL);
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if (pRowBlock->ulFileOffsetStart == FC_INVALID ||
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pRowBlock->ulFileOffsetEnd == FC_INVALID ||
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pRowBlock->ulFileOffsetStart == pRowBlock->ulFileOffsetEnd) {
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DBG_HEX_C(pRowBlock->ulFileOffsetStart != FC_INVALID,
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pRowBlock->ulFileOffsetStart);
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DBG_HEX_C(pRowBlock->ulFileOffsetEnd != FC_INVALID,
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pRowBlock->ulFileOffsetEnd);
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return;
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}
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NO_DBG_HEX(pRowBlock->ulFileOffsetStart);
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NO_DBG_HEX(pRowBlock->ulFileOffsetEnd);
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NO_DBG_DEC(pRowBlock->ucNumberOfColumns);
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/* Create the new list member */
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pListMember = xmalloc(sizeof(row_desc_type));
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/* Fill the new list member */
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pListMember->tInfo = *pRowBlock;
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pListMember->pNext = NULL;
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/* Correct the values where needed */
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for (iIndex = 0, psTmp = pListMember->tInfo.asColumnWidth;
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iIndex < (int)pListMember->tInfo.ucNumberOfColumns;
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iIndex++, psTmp++) {
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if (*psTmp < 0) {
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*psTmp = 0;
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DBG_MSG("The column width was negative");
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}
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}
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/* Add the new member to the list */
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if (pAnchor == NULL) {
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pAnchor = pListMember;
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pRowCurrent = pListMember;
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} else {
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fail(pRowLast == NULL);
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pRowLast->pNext = pListMember;
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}
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pRowLast = pListMember;
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} /* end of vAdd2RowInfoList */
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/*
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* Get the next item in the Row Information List
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*/
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const row_block_type *
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pGetNextRowInfoListItem(void)
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{
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const row_block_type *pItem;
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if (pRowCurrent == NULL) {
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return NULL;
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}
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pItem = &pRowCurrent->tInfo;
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pRowCurrent = pRowCurrent->pNext;
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return pItem;
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} /* end of pGetNextRowInfoListItem */
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