TB9.2 Example Applications: examples/PIPS/antiword/src/sectlist.c Source File

00001 /*
-00002  * sectlist.c
-00003  * Copyright (C) 2001-2004 A.J. van Os; Released under GNU GPL
-00004  *
-00005  * Description:
-00006  * Build, read and destroy list(s) of Word section information
-00007  */
-00008 
-00009 #include <stddef.h>
-00010 #include <string.h>
-00011 #include "antiword.h"
-00012 
-00013 
-00014 /*
-00015  * Private structure to hide the way the information
-00016  * is stored from the rest of the program
-00017  */
-00018 typedef struct section_mem_tag {
-00019         section_block_type      tInfo;
-00020         ULONG                   ulCharPos;
-00021         struct section_mem_tag  *pNext;
-00022 } section_mem_type;
-00023 
-00024 /* Variables needed to write the Section Information List */
-00025 static section_mem_type *pAnchor = NULL;
-00026 static section_mem_type *pSectionLast = NULL;
-00027 
-00028 
-00029 /*
-00030  * vDestroySectionInfoList - destroy the Section Information List
-00031  */
-00032 void
-00033 vDestroySectionInfoList(void)
-00034 {
-00035         section_mem_type        *pCurr, *pNext;
-00036 
-00037         DBG_MSG("vDestroySectionInfoList");
-00038 
-00039         /* Free the Section Information List */
-00040         pCurr = pAnchor;
-00041         while (pCurr != NULL) {
-00042                 pNext = pCurr->pNext;
-00043                 pCurr = xfree(pCurr);
-00044                 pCurr = pNext;
-00045         }
-00046         pAnchor = NULL;
-00047         /* Reset all control variables */
-00048         pSectionLast = NULL;
-00049 } /* end of vDestroySectionInfoList */
-00050 
-00051 /*
-00052  * vAdd2SectionInfoList - Add an element to the Section Information List
-00053  */
-00054 void
-00055 vAdd2SectionInfoList(const section_block_type *pSection, ULONG ulCharPos)
-00056 {
-00057         section_mem_type        *pListMember;
-00058 
-00059         fail(pSection == NULL);
-00060 
-00061         /* Create list member */
-00062         pListMember = xmalloc(sizeof(section_mem_type));
-00063         /* Fill the list member */
-00064         pListMember->tInfo = *pSection;
-00065         pListMember->ulCharPos = ulCharPos;
-00066         pListMember->pNext = NULL;
-00067         /* Add the new member to the list */
-00068         if (pAnchor == NULL) {
-00069                 pAnchor = pListMember;
-00070         } else {
-00071                 fail(pSectionLast == NULL);
-00072                 pSectionLast->pNext = pListMember;
-00073         }
-00074         pSectionLast = pListMember;
-00075 } /* vAdd2SectionInfoList */
-00076 
-00077 /*
-00078  * vGetDefaultSection - fill the section struct with default values
-00079  */
-00080 void
-00081 vGetDefaultSection(section_block_type *pSection)
-00082 {
-00083         (void)memset(pSection, 0, sizeof(*pSection));
-00084         pSection->bNewPage = TRUE;
-00085 } /* end of vGetDefaultSection */
-00086 
-00087 /*
-00088  * vDefault2SectionInfoList - Add a default to the Section Information List
-00089  */
-00090 void
-00091 vDefault2SectionInfoList(ULONG ulCharPos)
-00092 {
-00093         section_block_type      tSection;
-00094 
-00095         vGetDefaultSection(&tSection);
-00096         vAdd2SectionInfoList(&tSection, ulCharPos);
-00097 } /* end of vDefault2SectionInfoList */
-00098 
-00099 /*
-00100  * pGetSectionInfo - get the section information
-00101  */
-00102 const section_block_type *
-00103 pGetSectionInfo(const section_block_type *pOld, ULONG ulCharPos)
-00104 {
-00105         const section_mem_type  *pCurr;
-00106 
-00107         if (pOld == NULL || ulCharPos == 0) {
-00108                 if (pAnchor == NULL) {
-00109                         /* There are no records, make one */
-00110                         vDefault2SectionInfoList(0);
-00111                         fail(pAnchor == NULL);
-00112                 }
-00113                 /* The first record */
-00114                 NO_DBG_MSG("First record");
-00115                 return &pAnchor->tInfo;
-00116         }
-00117 
-00118         NO_DBG_HEX(ulCharPos);
-00119         for (pCurr = pAnchor; pCurr != NULL; pCurr = pCurr->pNext) {
-00120                 NO_DBG_HEX(pCurr->ulCharPos);
-00121                 if (ulCharPos == pCurr->ulCharPos ||
-00122                     ulCharPos + 1 == pCurr->ulCharPos) {
-00123                         NO_DBG_HEX(pCurr->ulCharPos);
-00124                         return &pCurr->tInfo;
-00125                 }
-00126         }
-00127         return pOld;
-00128 } /* end of pGetSectionInfo */
-00129 
-00130 /*
-00131  * tGetNumberOfSections - get the number of sections
-00132  */
-00133 size_t
-00134 tGetNumberOfSections(void)
-00135 {
-00136         const section_mem_type  *pCurr;
-00137         size_t  tCounter;
-00138 
-00139         for (tCounter = 0, pCurr = pAnchor;
-00140              pCurr != NULL;
-00141              tCounter++, pCurr = pCurr->pNext)
-00142                 ;       /* Empty */
-00143         return tCounter;
-00144 } /* end of tGetNumberOfSections */
-00145 
-00146 /*
-00147  * ucGetSepHdrFtrSpecification - get the Heder/footer specification
-00148  */
-00149 UCHAR
-00150 ucGetSepHdrFtrSpecification(size_t tSectionNumber)
-00151 {
-00152         const section_mem_type  *pCurr;
-00153         size_t  tIndex;
-00154 
-00155         for (tIndex = 0, pCurr = pAnchor;
-00156              tIndex < tSectionNumber && pCurr != NULL;
-00157              tIndex++, pCurr = pCurr->pNext)
-00158                 ;       /* Empty */
-00159         if (pCurr == NULL) {
-00160                 DBG_DEC(tSectionNumber);
-00161                 DBG_FIXME();
-00162                 return 0x00;
-00163         }
-00164         return pCurr->tInfo.ucHdrFtrSpecification;
-00165 } /* end of ucGetSepHdrFtrSpecification */
-