#include #include #include "config.h" #include "wv.h" void internal_wvReleasePAPX_FKP(PAPX_FKP *fkp) { int i; wvFree(fkp->rgfc); fkp->rgfc=NULL; wvFree(fkp->rgbx); fkp->rgbx=NULL; for (i=0;icrun;i++) wvReleasePAPX(&(fkp->grppapx[i])); fkp->crun=0; wvFree(fkp->grppapx); fkp->grppapx=NULL; } /* At offset 511 is a 1-byte count named crun, which is a count of paragraphs in PAPX FKPs. Beginning at offset 0 of the FKP is an array of crun+1 FCs, named rgfc, which records the beginning and limit FCs of crun paragraphs. immediately following the fkp.rgfc is an array of 13 byte entries called BXs. This array called the rgbx is in 1-to-1 correspondence with the rgfc. The first byte of the ith BX entry contains a single byte field which gives the word offset of the PAPX that belongs to the paragraph whose beginning in FC space is rgfc[i] and whose limit is rgfc[i+1] in FC space. The last 12 bytes of the ith BX entry contain a PHE structure that stores the current paragraph height of the paragraph whose beginning in FC space is rgfc[i] and whose limit is rgfc[i+1] in FC space. */ /* The first byte of each BX is the word offset of the PAPX recorded for the paragraph corresponding to this BX. .. If the byte stored is 0, this represents a 1 line paragraph 15 pixels high with Normal style (stc == 0) whose column width is 7980 dxas. The last 12 bytes of the BX is a PHE structure which stores the current paragraph height for the paragraph corresponding to the BX. If a plcfphe has an entry that maps to the FC for this paragraph, that entry's PHE overrides the PHE stored in the FKP.11*fkp.crun+4 unused space. As new runs/paragraphs are recorded in the FKP, unused space is reduced by 17 if CHPX/PAPX is already recorded and is reduced by 17+sizeof(PAPX) if property is not already recorded. */ PAPX_FKP wvPAPX_FKP_previous; U32 wvPAPX_pn_previous=0; void wvGetPAPX_FKP(version ver,PAPX_FKP *fkp,U32 pn,FILE *fd) { int i; U8 page[WV_PAGESIZE]; U16 pos=0; size_t bytes_read; /* brian.ewins@bt.com */ /* there seem to be a lot of repeat calls... */ /* pn=0 is safe because thats the index block, not a PAPX_FKP */ if (pn!=0 && pn==wvPAPX_pn_previous) { memcpy(fkp,&wvPAPX_FKP_previous,sizeof(PAPX_FKP)); return; } wvTrace(("seeking to %x to get crun\n",pn*WV_PAGESIZE+(WV_PAGESIZE-1))); fseek(fd,pn*WV_PAGESIZE,SEEK_SET); bytes_read=fread(page,WV_PAGESIZE,1,fd); fkp->crun = (U8)page[WV_PAGESIZE-1]; fkp->rgfc = (U32 *)malloc(sizeof(U32) * (fkp->crun+1)); fkp->rgbx = (BX *)malloc(sizeof(BX) * (fkp->crun)); fkp->grppapx = (PAPX *)malloc(sizeof(PAPX) * (fkp->crun)); for (i=0;icrun+1;i++) { fkp->rgfc[i] = bread_32ubit(&(page[pos]),&pos); wvTrace(("rgfc is %x\n",fkp->rgfc[i])); } for (i=0;icrun;i++) { if (ver == WORD8) wvGetBX(&fkp->rgbx[i],page,&pos); else wvGetBX6(&fkp->rgbx[i],page,&pos); } for (i=0;icrun;i++) { if (fkp->rgbx[i].offset == 0) { wvTrace(("i is %d, using clear papx\n",i)); wvInitPAPX(&(fkp->grppapx[i])); } else { wvTrace(("papx index i is %d, offset is %x\n",i,pn*WV_PAGESIZE+fkp->rgbx[i].offset*2)); pos=fkp->rgbx[i].offset*2; wvGetPAPX(ver,&(fkp->grppapx[i]),page,&pos); } } if (wvPAPX_pn_previous!=0) internal_wvReleasePAPX_FKP(&wvPAPX_FKP_previous); memcpy(&wvPAPX_FKP_previous,fkp,sizeof(PAPX_FKP)); wvPAPX_pn_previous=pn; } /* Using the FC, search the FCs FKP for the largest FC less than the character's FC, call it fcTest. */ U32 wvSearchNextLargestFCPAPX_FKP(PAPX_FKP *fkp,U32 currentfc) { U32 i=0; U8 until=fkp->crun+1; U32 fcTest=0; while (irgfc[i])); if ( (wvNormFC(fkp->rgfc[i],NULL) < currentfc) && (wvNormFC(fkp->rgfc[i],NULL) > fcTest) ) fcTest = wvNormFC(fkp->rgfc[i],NULL); else if (wvNormFC(fkp->rgfc[i],NULL) == currentfc) fcTest = currentfc+1; i++; } /*for the first paragraph return the current pos as the beginning*/ /* if (fcTest == 0) fcTest = currentfc+1; */ return(fcTest); } U32 wvSearchNextLargestFCCHPX_FKP(CHPX_FKP *fkp,U32 currentfc) { U32 i=0; U8 until=fkp->crun+1; U32 fcTest=0; while (irgfc[i])); if ( (wvNormFC(fkp->rgfc[i],NULL) <= currentfc) && (wvNormFC(fkp->rgfc[i],NULL) > fcTest) ) fcTest = wvNormFC(fkp->rgfc[i],NULL); i++; } /*for the first paragraph return the current pos as the beginning*/ /* if (fcTest == 0) fcTest = currentfc+1; */ return(fcTest); } /* Using the FC of the character, first search the FKP that describes the character to find the smallest FC in the rgfc that is larger than the character FC. */ U32 wvSearchNextSmallestFCPAPX_FKP(PAPX_FKP *fkp,U32 currentfc) { U32 i=0; U32 fcTest=0xffffffffL; U8 until=fkp->crun+1; while (irgfc[i],NULL),wvNormFC(fkp->rgfc[i],NULL))); if ( (wvNormFC(fkp->rgfc[i],NULL) > currentfc) && (wvNormFC(fkp->rgfc[i],NULL) < fcTest) ) fcTest = wvNormFC(fkp->rgfc[i],NULL); i++; } return(fcTest); } void wvReleasePAPX_FKP(PAPX_FKP *fkp) { return; } void wvInitPAPX_FKP(PAPX_FKP *fkp) { fkp->rgfc=NULL; fkp->rgbx=NULL; fkp->crun=0; fkp->grppapx=NULL; } int wvGetIndexFCInFKP_PAPX(PAPX_FKP *fkp,U32 currentfc) { U32 i=1; /*was 0, there is something slightly out of sync in the system*/ U8 until=fkp->crun+1; while (irgfc[i],NULL),fkp->rgfc[i])); if (wvNormFC(fkp->rgfc[i],NULL) == currentfc) return(i); i++; } /* basically read Algorithm to determine paragraph properties for a paragraph & Formatted Disk Page for PAPXs, somehow the currentfc sent in was wrong or my understanding is ! */ wvTrace(("Shite, fix me %x %x\n",currentfc,fkp->rgfc[0])); /*return 1 to make things continue on their merry way*/ return(1); } void internal_wvReleaseCHPX_FKP(CHPX_FKP *fkp) { int i; wvTrace(("chpx fkp b freeed\n")); wvFree(fkp->rgfc); fkp->rgfc=NULL; wvFree(fkp->rgb); fkp->rgb=NULL; for (i=0;icrun;i++) wvReleaseCHPX(&(fkp->grpchpx[i])); fkp->crun=0; wvFree(fkp->grpchpx); fkp->grpchpx=NULL; wvTrace(("chpx fkp e freeed\n")); } /* Character properties * -basically just like PAPX FKPs above * however, rather than an array of BX structs in rgbx, * there is an array of bytes (giving the word offset to the CHPX) in rgb * -JB */ CHPX_FKP wvCHPX_FKP_previous; U32 wvCHPX_pn_previous=0; void wvGetCHPX_FKP(version ver, CHPX_FKP *fkp, U32 pn, FILE *fd) { int i; U8 page[WV_PAGESIZE]; U16 pos=0; size_t bytes_read; /* brian.ewins@bt.com */ /* there seem to be a lot of repeat calls... */ /* pn=0 is safe because thats the index block, not a CHPX_FKP */ if (pn!=0 && pn==wvCHPX_pn_previous) { memcpy(fkp,&wvCHPX_FKP_previous,sizeof(CHPX_FKP)); return; } fseek(fd,pn*WV_PAGESIZE,SEEK_SET); bytes_read=fread(page,WV_PAGESIZE,1,fd); fkp->crun = (U8)page[WV_PAGESIZE-1]; wvTrace(("chpx fkp gone to %x\n",pn*WV_PAGESIZE+(WV_PAGESIZE-1))); wvTrace(("crun is %d\n",fkp->crun)); fkp->rgfc = (U32 *)malloc(sizeof(U32) * (fkp->crun+1)); fkp->rgb = (U8 *)malloc(sizeof(U8) * (fkp->crun)); fkp->grpchpx = (CHPX *)malloc(sizeof(CHPX) * (fkp->crun)); fseek(fd, pn*WV_PAGESIZE, SEEK_SET); wvTrace(("offset is %x\n",pn*WV_PAGESIZE)); for (i=0;icrun+1;i++) { fkp->rgfc[i] = bread_32ubit(&(page[pos]),&pos); wvTrace(("rgfc is %x\n",fkp->rgfc[i])); } for (i=0;icrun;i++) fkp->rgb[i] = bgetc(&(page[pos]),&pos); for (i=0;icrun;i++) { if (fkp->rgb[i] == 0) { wvTrace(("i is %d, using clear chpx\n",i)); wvInitCHPX(&(fkp->grpchpx[i])); } else { wvTrace(("chpx index i is %d, offset is %x\n", i, (pn * WV_PAGESIZE) + (fkp->rgb[i] * 2))); pos=fkp->rgb[i]*2; wvGetCHPX(ver, &(fkp->grpchpx[i]), page,&pos); } } if (wvCHPX_pn_previous!=0) internal_wvReleaseCHPX_FKP(&wvCHPX_FKP_previous); memcpy(&wvCHPX_FKP_previous,fkp,sizeof(CHPX_FKP)); wvCHPX_pn_previous=pn; } void wvReleaseCHPX_FKP(CHPX_FKP *fkp) { return; } void wvInitCHPX_FKP(CHPX_FKP *fkp) { fkp->rgfc=NULL; fkp->rgb=NULL; fkp->crun=0; fkp->grpchpx=NULL; }