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- /*
- * hdrftrlist.c
- * Copyright (C) 2004,2005 A.J. van Os; Released under GNU GPL
- *
- * Description:
- * Build, read and destroy list(s) of Word Header/footer information
- */
- #include <string.h>
- #include "antiword.h"
- #define HDR_EVEN_PAGES 0
- #define HDR_ODD_PAGES 1
- #define FTR_EVEN_PAGES 2
- #define FTR_ODD_PAGES 3
- #define HDR_FIRST_PAGE 4
- #define FTR_FIRST_PAGE 5
- /*
- * Private structures to hide the way the information
- * is stored from the rest of the program
- */
- typedef struct hdrftr_local_tag {
- hdrftr_block_type tInfo;
- ULONG ulCharPosStart;
- ULONG ulCharPosNext;
- BOOL bUseful;
- BOOL bTextOriginal;
- } hdrftr_local_type;
- typedef struct hdrftr_mem_tag {
- hdrftr_local_type atElement[6];
- } hdrftr_mem_type;
- /* Variables needed to write the Header/footer Information List */
- static hdrftr_mem_type *pHdrFtrList = NULL;
- static size_t tHdrFtrLen = 0;
- /*
- * vDestroyHdrFtrInfoList - destroy the Header/footer Information List
- */
- void
- vDestroyHdrFtrInfoList(void)
- {
- hdrftr_mem_type *pRecord;
- output_type *pCurr, *pNext;
- size_t tHdrFtr, tIndex;
- DBG_MSG("vDestroyHdrFtrInfoList");
- /* Free the Header/footer Information List */
- for (tHdrFtr = 0; tHdrFtr < tHdrFtrLen; tHdrFtr++) {
- pRecord = pHdrFtrList + tHdrFtr;
- for (tIndex = 0;
- tIndex < elementsof(pRecord->atElement);
- tIndex++) {
- if (!pRecord->atElement[tIndex].bTextOriginal) {
- continue;
- }
- pCurr = pRecord->atElement[tIndex].tInfo.pText;
- while (pCurr != NULL) {
- pCurr->szStorage = xfree(pCurr->szStorage);
- pNext = pCurr->pNext;
- pCurr = xfree(pCurr);
- pCurr = pNext;
- }
- }
- }
- pHdrFtrList = xfree(pHdrFtrList);
- /* Reset all control variables */
- tHdrFtrLen = 0;
- } /* end of vDestroyHdrFtrInfoList */
- /*
- * vCreat8HdrFtrInfoList - Create the Header/footer Information List
- */
- void
- vCreat8HdrFtrInfoList(const ULONG *aulCharPos, size_t tLength)
- {
- hdrftr_mem_type *pListMember;
- size_t tHdrFtr, tIndex, tMainIndex;
- fail(aulCharPos == NULL);
- DBG_DEC(tLength);
- if (tLength <= 1) {
- return;
- }
- tHdrFtrLen = tLength / 12;
- if (tLength % 12 != 0 && tLength % 12 != 1) {
- tHdrFtrLen++;
- }
- DBG_DEC(tHdrFtrLen);
- pHdrFtrList = xcalloc(tHdrFtrLen, sizeof(hdrftr_mem_type));
- for (tHdrFtr = 0; tHdrFtr < tHdrFtrLen; tHdrFtr++) {
- pListMember = pHdrFtrList + tHdrFtr;
- for (tIndex = 0, tMainIndex = tHdrFtr * 12;
- tIndex < 6 && tMainIndex < tLength;
- tIndex++, tMainIndex++) {
- pListMember->atElement[tIndex].tInfo.pText = NULL;
- pListMember->atElement[tIndex].ulCharPosStart =
- aulCharPos[tMainIndex];
- if (tMainIndex + 1 < tLength) {
- pListMember->atElement[tIndex].ulCharPosNext =
- aulCharPos[tMainIndex + 1];
- } else {
- pListMember->atElement[tIndex].ulCharPosNext =
- aulCharPos[tMainIndex];
- }
- }
- }
- } /* end of vCreat8HdrFtrInfoList */
- /*
- * vCreat6HdrFtrInfoList - Create the Header/footer Information List
- */
- void
- vCreat6HdrFtrInfoList(const ULONG *aulCharPos, size_t tLength)
- {
- static const size_t atIndex[] =
- { SIZE_T_MAX, SIZE_T_MAX, FTR_FIRST_PAGE, HDR_FIRST_PAGE,
- FTR_ODD_PAGES, FTR_EVEN_PAGES, HDR_ODD_PAGES, HDR_EVEN_PAGES,
- };
- hdrftr_mem_type *pListMember;
- size_t tHdrFtr, tTmp, tIndex, tMainIndex, tBit;
- UCHAR ucDopSpecification, ucSepSpecification;
- fail(aulCharPos == NULL);
- DBG_DEC(tLength);
- if (tLength <= 1) {
- return;
- }
- tHdrFtrLen = tGetNumberOfSections();
- if (tHdrFtrLen == 0) {
- tHdrFtrLen = 1;
- }
- DBG_DEC(tHdrFtrLen);
- pHdrFtrList = xcalloc(tHdrFtrLen, sizeof(hdrftr_mem_type));
- /* Get the start index in aulCharPos */
- ucDopSpecification = ucGetDopHdrFtrSpecification();
- DBG_HEX(ucDopSpecification & 0xe0);
- tMainIndex = 0;
- for (tBit = 7; tBit >= 5; tBit--) {
- if ((ucDopSpecification & BIT(tBit)) != 0) {
- tMainIndex++;
- }
- }
- DBG_DEC(tMainIndex);
- for (tHdrFtr = 0; tHdrFtr < tHdrFtrLen; tHdrFtr++) {
- ucSepSpecification = ucGetSepHdrFtrSpecification(tHdrFtr);
- DBG_HEX(ucSepSpecification & 0xfc);
- pListMember = pHdrFtrList + tHdrFtr;
- for (tTmp = 0;
- tTmp < elementsof(pListMember->atElement);
- tTmp++) {
- pListMember->atElement[tTmp].tInfo.pText = NULL;
- }
- for (tBit = 7; tBit >= 2; tBit--) {
- if (tMainIndex >= tLength) {
- break;
- }
- if ((ucSepSpecification & BIT(tBit)) == 0) {
- continue;
- }
- tIndex = atIndex[tBit];
- fail(tIndex >= 6);
- pListMember->atElement[tIndex].ulCharPosStart =
- aulCharPos[tMainIndex];
- if (tMainIndex + 1 < tLength) {
- pListMember->atElement[tIndex].ulCharPosNext =
- aulCharPos[tMainIndex + 1];
- } else {
- pListMember->atElement[tIndex].ulCharPosNext =
- aulCharPos[tMainIndex];
- }
- tMainIndex++;
- }
- }
- } /* end of vCreat6HdrFtrInfoList */
- /*
- * vCreat2HdrFtrInfoList - Create the Header/footer Information List
- */
- void
- vCreat2HdrFtrInfoList(const ULONG *aulCharPos, size_t tLength)
- {
- vCreat6HdrFtrInfoList(aulCharPos, tLength);
- } /* end of vCreat2HdrFtrInfoList */
- /*
- * pGetHdrFtrInfo - get the Header/footer information
- */
- const hdrftr_block_type *
- pGetHdrFtrInfo(int iSectionIndex,
- BOOL bWantHeader, BOOL bOddPage, BOOL bFirstInSection)
- {
- hdrftr_mem_type *pCurr;
- fail(iSectionIndex < 0);
- fail(pHdrFtrList == NULL && tHdrFtrLen != 0);
- if (pHdrFtrList == NULL || tHdrFtrLen == 0) {
- /* No information */
- return NULL;
- }
- if (iSectionIndex < 0) {
- iSectionIndex = 0;
- } else if (iSectionIndex >= (int)tHdrFtrLen) {
- iSectionIndex = (int)(tHdrFtrLen - 1);
- }
- pCurr = pHdrFtrList + iSectionIndex;
- if (bFirstInSection) {
- if (bWantHeader) {
- return &pCurr->atElement[HDR_FIRST_PAGE].tInfo;
- } else {
- return &pCurr->atElement[FTR_FIRST_PAGE].tInfo;
- }
- } else {
- if (bWantHeader) {
- if (bOddPage) {
- return &pCurr->atElement[HDR_ODD_PAGES].tInfo;
- } else {
- return &pCurr->atElement[HDR_EVEN_PAGES].tInfo;
- }
- } else {
- if (bOddPage) {
- return &pCurr->atElement[FTR_ODD_PAGES].tInfo;
- } else {
- return &pCurr->atElement[FTR_EVEN_PAGES].tInfo;
- }
- }
- }
- } /* end of pGetHdrFtrInfo */
- /*
- * lComputeHdrFtrHeight - compute the height of a header or footer
- *
- * Returns the height in DrawUnits
- */
- static long
- lComputeHdrFtrHeight(const output_type *pAnchor)
- {
- const output_type *pCurr;
- long lTotal;
- USHORT usFontSizeMax;
- lTotal = 0;
- usFontSizeMax = 0;
- for (pCurr = pAnchor; pCurr != NULL; pCurr = pCurr->pNext) {
- if (pCurr->tNextFree == 1) {
- if (pCurr->szStorage[0] == PAR_END) {
- /* End of a paragraph */
- lTotal += lComputeLeading(usFontSizeMax);
- lTotal += lMilliPoints2DrawUnits(
- (long)pCurr->usFontSize * 200);
- usFontSizeMax = 0;
- continue;
- }
- if (pCurr->szStorage[0] == HARD_RETURN) {
- /* End of a line */
- lTotal += lComputeLeading(usFontSizeMax);
- usFontSizeMax = 0;
- continue;
- }
- }
- if (pCurr->usFontSize > usFontSizeMax) {
- usFontSizeMax = pCurr->usFontSize;
- }
- }
- if (usFontSizeMax != 0) {
- /* Height of the last paragraph */
- lTotal += lComputeLeading(usFontSizeMax);
- }
- return lTotal;
- } /* end of lComputeHdrFtrHeight */
- /*
- * vPrepareHdrFtrText - prepare the header/footer text
- */
- void
- vPrepareHdrFtrText(FILE *pFile)
- {
- hdrftr_mem_type *pCurr, *pPrev;
- hdrftr_local_type *pTmp;
- output_type *pText;
- size_t tHdrFtr, tIndex;
- fail(pFile == NULL);
- fail(pHdrFtrList == NULL && tHdrFtrLen != 0);
- if (pHdrFtrList == NULL || tHdrFtrLen == 0) {
- /* No information */
- return;
- }
- /* Fill text, text height and useful-ness */
- for (tHdrFtr = 0; tHdrFtr < tHdrFtrLen; tHdrFtr++) {
- pCurr = pHdrFtrList + tHdrFtr;
- for (tIndex = 0;
- tIndex < elementsof(pHdrFtrList->atElement);
- tIndex++) {
- pTmp = &pCurr->atElement[tIndex];
- pTmp->bUseful =
- pTmp->ulCharPosStart != pTmp->ulCharPosNext;
- if (pTmp->bUseful) {
- pText = pHdrFtrDecryptor(pFile,
- pTmp->ulCharPosStart,
- pTmp->ulCharPosNext);
- pTmp->tInfo.pText = pText;
- pTmp->tInfo.lHeight =
- lComputeHdrFtrHeight(pText);
- pTmp->bTextOriginal = pText != NULL;
- } else {
- pTmp->tInfo.pText = NULL;
- pTmp->tInfo.lHeight = 0;
- pTmp->bTextOriginal = FALSE;
- }
- }
- }
- /* Replace not-useful records by using inheritance */
- if (pHdrFtrList->atElement[HDR_FIRST_PAGE].bUseful) {
- pTmp = &pHdrFtrList->atElement[HDR_ODD_PAGES];
- if (!pTmp->bUseful) {
- *pTmp = pHdrFtrList->atElement[HDR_FIRST_PAGE];
- pTmp->bTextOriginal = FALSE;
- }
- pTmp = &pHdrFtrList->atElement[HDR_EVEN_PAGES];
- if (!pTmp->bUseful) {
- *pTmp = pHdrFtrList->atElement[HDR_FIRST_PAGE];
- pTmp->bTextOriginal = FALSE;
- }
- }
- if (pHdrFtrList->atElement[FTR_FIRST_PAGE].bUseful) {
- pTmp = &pHdrFtrList->atElement[FTR_ODD_PAGES];
- if (!pTmp->bUseful) {
- *pTmp = pHdrFtrList->atElement[FTR_FIRST_PAGE];
- pTmp->bTextOriginal = FALSE;
- }
- pTmp = &pHdrFtrList->atElement[FTR_EVEN_PAGES];
- if (!pTmp->bUseful) {
- *pTmp = pHdrFtrList->atElement[FTR_FIRST_PAGE];
- pTmp->bTextOriginal = FALSE;
- }
- }
- for (tHdrFtr = 1, pCurr = &pHdrFtrList[1];
- tHdrFtr < tHdrFtrLen;
- tHdrFtr++, pCurr++) {
- pPrev = pCurr - 1;
- for (tIndex = 0;
- tIndex < elementsof(pHdrFtrList->atElement);
- tIndex++) {
- if (!pCurr->atElement[tIndex].bUseful &&
- pPrev->atElement[tIndex].bUseful) {
- pCurr->atElement[tIndex] =
- pPrev->atElement[tIndex];
- pCurr->atElement[tIndex].bTextOriginal = FALSE;
- }
- }
- }
- } /* end of vPrepareHdrFtrText */
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