#define VERSION "1.02/02" #define PANOS /* Unfortunatly we need to make some changes */ #define FONTAREA "$.tex.pixel300" /* * * AUTHOR(s) * Mark Senn wrote the early versions of this program for the * BBN BitGraph. Stephan Bechtolsheim, Bob Brown, Richard * Furuta, James Schaad and Robert Wells improved it. Norm * Hutchinson ported the program to the Sun. Neal Holtz ported * it to the Apollo, and from there to producing PostScript * output. * */ /* Basic method: * Using the local font cacheing machinery that was in the previewer, * we can easily manage to send the bitmap for each chracter only once. * Two passes are made over each page in the DVI file. The first pass * simply outputs the bitmaps for all characters on that page that haven't * been sent before. The second pass outputs all the character setting * and positioning commands. This allows us to bracket the setting portion * with PostScript save's and restore's, thus reclaiming considerable * virtual memory after each page. * * All coordinates are output in the PostScript system (origin at lower * left), and in integer units of "dots" (300/inch) -- except for character * widths, which are sent as floating point numbers. * * About 2 pages of PostScript support code must be sent to the LaserWriter * before this stuff goes. This program does NOT automatically include it. */ /* Change log: * * Early 1985, (nmh) -- ported sun version to Apollo. * A little later (nmh) -- changed to continue on in the event of missing * font files. * 30-Mar-85 (nmh) -- added -a option to specify a different PXL area * 30-Mar-85 (nmh) -- changed default PXL area to /pxl118 * 31-Mar-85 (nmh) -- fixed bug in OpenFontFile() regarding more than MAXOPEN * PXL files -- changed to mark files as closed in font_entry. * 7-Apr-85 (nmh) -- made command line argument decoding case insensitive. * cleaned up handling of DVI file name argument. * 30-May-85 (nmh) -- new version; hacked to output PostScript commands * 6-Jun-85 (nmh) -- added relative positioning (20% smaller PostScript output) * add -m option to specify mag * 11-Jun-85 (nmh) -- fixed bug regarding char spacings in very long "words" * 12-Jun-85 (nmh) -- v1.02 - process DVI pages in reverse order * 13-Jun-85 (nmh) -- fixed bug re PXL files getting opened too often when no PreLoad * 14-Jun-85 (nmh) -- font dict created in PostScript only when 1st char of font downloaded * add -m0 -mh -m1 etc. to specify magsteps */ /**********************************************************************/ /************************ Global Definitions ************************/ /**********************************************************************/ /* This version purports to drive a PostScript device (slowly) */ typedef int BOOLEAN; #define NEW(A) ((A *) malloc(sizeof(A))) #define DEBUG 1 /* for massive printing of input */ /* trace information; select by -d */ /* option after filename: */ /* dviview filename -d */ #ifdef DEBUG int Debug = 0; #endif /* to enable statistics reporting via -s option */ #define STATS #define BINARYOPEN fopen /* byte-oriented host version */ #define ARITHRSHIFT 1 /* define if ">>" operator is a sign-propagating arithmetic right shift */ #define USEGLOBALMAG 1 /* when defined, the dvi global magnification is applied */ /* We leave USEGLOBALMAG undefined because currently we have a limited number font magnifications (at 300dpi) available and if it is defined, any dvi file is as likely as not to fail */ #undef USEGLOBALMAG /* define for "optimal" relative postioning, rather than absolute. Relative can reduce size of postcript output 20% (and reduce print time by almost as much */ #define USERELPOS 1 #define DVIFORMAT 2 #define FALSE 0 #define FIRSTPXLCHAR 0 #ifndef FONTAREA #define FONTAREA "/local/tex/pxl300" #endif #define LASTPXLCHAR 127 #define MAXOPEN 3 /* limit on number of open PXL files */ #define NPXLCHARS 128 #define PXLID 1001 #ifdef PANOS #define READ 1 /* for access() */ #else #define READ 4 /* for access() */ #endif #define RESOLUTION 300 #define hconvRESOLUTION 300 #define vconvRESOLUTION 300 #define PTOP 3300 #define STACKSIZE 100 #define STRSIZE 257 #define TRUE 1 #define NONEXISTANT -1 /* offset for PXL files not found */ #define NOFILE (FILE *)-1 /**********************************************************************/ /*********************** external definitions ***********************/ /**********************************************************************/ #include "commands.h" #include #include extern int errno; char *getenv(); char *index(); char *malloc(); int free(); char *rindex(); char *sprintf(); char *strcpy(); #ifdef PANOS int strlen(); # /* output a formatted string */ #define EMIT printf /* output a simple string */ #define EMITS(s) fputs(s,stdout) /* output an escaped octal number */ #define EMITO(c) PutOct(c) /* output a decimal integer */ #define EMITN(n) PutInt(n) /* output a byte value in Hex */ #define EMITH(h) putchar(*(digit+((h>>4)&0xF))),\ putchar(*(digit+(h&0xF))) /* output a single character */ #define EMITC(c) putchar(c) /* output a scaled X dimension */ #define EMITX(x) PutInt(PixRound(x,hconv)) /* output a scaled Y dimension */ #define EMITY(y) PutInt(PixRound(y,vconv)) /* formatted i/o was killing us, so build some tables */ char *digit = "0123456789ABCDEF"; int dummyInt; short dummyShort; char dummyChar; #ifdef PANOS /**********************************************************************/ /************************ Panos stuff *********************************/ /**********************************************************************/ char *index(s,c) /* return a pointer to first char c in s or NULL */ char *s, c; { while (*s != '\0' && *s != c) s++; if (*s == '\0') return (NULL); return (s); } char *rindex(s,c) /* return a pointer to last char c in s or NULL */ char *s, c; { char *p = s + strlen(s); while (*p != c && p != s) p--; if (*p == c) return (p); return (NULL); } access(name, mask) char *name; int mask; { int GetFileInformation() asm; struct { int load,exec,length,attributes; } info; struct { int low,high; } time; int res; res = GetFileInformation( & info, & time, name, strlen(name) ); if (res < 0) return (res); return (info.attributes & mask); } #endif /**********************************************************************/ /************************* Global Procedures ************************/ /**********************************************************************/ /* Note: Global procedures are declared here in alphabetical order, with those which do not return values typed "void". Their bodies occur in alphabetical order following the main() procedure. The names are kept unique in the first 6 characters for portability. */ void AbortRun(); float ActualFactor(); void AllDone(); FILE* BINARYOPEN(); void DecodeArgs(); void DoSpecial(); void EmitChar(); void Fatal(); void FindPostAmblePtr(); void GetBytes(); void GetFontDef(); int HasBeenRead(); void LoadRast(); void MoveDown(); void MoveOver(); int NoSignExtend(); /* see cautionary note in code, re arithmetic vs logical shifts */ void OpenFontFile(); int PixRound(); void PutInt(); int ReadFontDef(); void ReadPostAmble(); void SetChar(); void SetFntNum(); void SetPosn(); void SetRule(); void SetString(); int SignExtend(); /* see cautionary note in code, re arithmetic vs logical shifts */ void SkipFontDef(); void Warning(); /**********************************************************************/ /*********************** Font Data Structures ***********************/ /**********************************************************************/ struct char_entry { /* character entry */ unsigned short width, height;/* width and height in pixels */ short xOffset, yOffset; /* x offset and y offset in pixels */ struct { int isloaded; union { int fileOffset; long *pixptr; } address; } where; int tfmw; /* TFM width */ }; struct font_entry { /* font entry */ int k, c, s, d, a, l; char n[STRSIZE]; /* FNT_DEF command parameters */ int font_space; /* computed from FNT_DEF s parameter */ int font_mag; /* computed from FNT_DEF s and d parameters */ char psname[STRSIZE]; /* PostScript name of the font */ char name[STRSIZE]; /* full name of PXL file */ FILE *font_file_id; /* file identifier (NOFILE if none) */ int magnification; /* magnification read from PXL file */ int designsize; /* design size read from PXL file */ struct char_entry ch[NPXLCHARS];/* character information */ struct font_entry *next; int ncdl; /* # of different chars actually downloaded */ #ifdef STATS int nbpxl; /* # of bytes of PXL data downloaded */ int ncts; /* total # of characters typeset */ #endif }; struct pixel_list { FILE *pixel_file_id; /* file identifier */ int use_count; /* count of "opens" */ }; /**********************************************************************/ /************************* Global Variables *************************/ /**********************************************************************/ int FirstPage = -1000000; /* first page to print (uses count0) */ int LastPage = 1000000; /* last page to print */ int G_errenc = FALSE; /* has an error been encountered? */ char G_Logname[STRSIZE]; /* name of log file, if created */ int G_interactive = FALSE; /* is the program running interactively */ /* (i.e., standard output not redirected)? */ int G_logging = 0; /* Are we logging warning messages? */ int G_logfile = FALSE; /* Are these messages going to a log file? */ FILE *G_logfp; /* log file pointer (for errors) */ char G_progname[STRSIZE]; /* program name */ int hconv, vconv; /* converts DVI units to pixels */ int den; /* denominator specified in preamble */ FILE *dvifp = NULL; /* DVI file pointer */ int PreLoad = TRUE; /* preload the font descriptions? */ struct font_entry *prevfont=NULL; /* font_entry pointer, previous character*/ struct font_entry *fontptr; /* font_entry pointer */ struct font_entry *hfontptr=NULL;/* font_entry pointer */ int h; /* current horizontal position */ int hh = 0; /* current h on device */ int v; /* current vertical position */ int vv = 0; /* current v on device */ int mag; /* magnification specified in preamble */ int nopen; /* number of open PXL files */ int num; /* numerator specified in preamble */ struct font_entry *pfontptr = NULL; /* previous font_entry pointer */ struct pixel_list pixel_files[MAXOPEN+1]; /* list of open PXL file identifiers */ long postambleptr; /* Pointer to the postamble */ FILE *pxlfp; /* PXL file pointer */ char *PXLpath; /* PXL path name for search */ long ppagep; /* previous page pointer */ int Reverse = TRUE; /* process DVI pages in reverse order ? */ #ifdef STATS int Stats = FALSE; /* are we reporting stats ? */ int Snbpxl = 0; /* # of bytes of pixel data */ int Sonbpx = 0; /* "optimal" number of bytes of pixel data */ int Sndc = 0; /* # of different characters typeset */ int Stnc = 0; /* total # of chars typeset */ int Snbpx0, Sndc0, Stnc0; /* used for printing incremental changes per dvi page */ #endif STATS int usermag = 0; /* user specified magnification */ /**********************************************************************/ /******************************* main *******************************/ /**********************************************************************/ main(argc, argv) int argc; char *argv[]; { struct stack_entry { /* stack entry */ int h, v, w, x, y, z; /* what's on stack */ }; int command; /* current command */ int count[10]; /* the 10 counters at begining of each page */ long cpagep; /* current page pointer */ int Emitting = FALSE; /* are we outputting typsetting instructions? */ register int i; /* command parameter; loop index */ int k; /* temporary parameter */ char n[STRSIZE]; /* command parameter */ int PassNo = 0; /* which pass over the DVI page are we on? */ int SkipMode = FALSE; /* in skip mode flag */ int sp; /* stack pointer */ struct stack_entry stack[STACKSIZE]; /* stack */ int t; /* temporary */ char SpecialStr[STRSIZE]; /* "\special" strings */ register struct char_entry *tcharptr; /* temporary char_entry ptr*/ int val, val2; /* temporarys to hold command information*/ int w; /* current horizontal spacing */ int x; /* current horizontal spacing */ int y; /* current vertical spacing */ int z; /* current vertical spacing */ nopen = 0; strcpy(G_progname, argv[0]); PXLpath = FONTAREA; /* default font area */ DecodeArgs( argc, argv ); #ifdef apollo set_sbrk_size( 2048*1024 ); #endif if ((i = NoSignExtend(dvifp, 1)) != PRE) { fprintf(stderr,"\n"); Fatal("%s: PRE doesn't occur first--are you sure this is a DVI file?\n\n", G_progname); } i = SignExtend(dvifp, 1); if (i != DVIFORMAT) { fprintf(stderr,"\n"); Fatal("%s: DVI format = %d, can only process DVI format %d files\n\n", G_progname, i, DVIFORMAT); } if (Reverse) { ReadPostAmble(PreLoad); fseek(dvifp, ppagep, 0); } else { if (PreLoad) { ReadPostAmble(TRUE); fseek(dvifp, (long) 14, 0); } else { num = NoSignExtend(dvifp, 4); den = NoSignExtend(dvifp, 4); mag = NoSignExtend(dvifp, 4); if( usermag > 0 ) mag = usermag; #ifndef USEGLOBALMAG if( mag != 1000 ) fprintf(stderr, "Magnification of %d ignored.\n", mag); #endif hconv = DoConv(num, den, hconvRESOLUTION); vconv = DoConv(num, den, vconvRESOLUTION); } k = NoSignExtend(dvifp, 1); GetBytes(dvifp, n, k); } PassNo = 0; while (TRUE) switch (command=NoSignExtend(dvifp, 1)) { case SET1:case SET2:case SET3:case SET4: val = NoSignExtend(dvifp, command-SET1+1); if (!SkipMode) SetChar(val, command, PassNo); break; case SET_RULE: val = NoSignExtend(dvifp, 4); val2 = NoSignExtend(dvifp, 4); if (Emitting) SetRule(val, val2, 1); break; case PUT1:case PUT2:case PUT3:case PUT4: val = NoSignExtend(dvifp,command-PUT1+1); if (!SkipMode) SetChar(val, command, PassNo); break; case PUT_RULE: val = NoSignExtend(dvifp, 4); val2 = NoSignExtend(dvifp, 4); if (Emitting) SetRule(val, val2, 0); break; case NOP: break; case BOP: cpagep = ftell(dvifp) - 1; for (i=0; i<=9; i++) count[i] = NoSignExtend(dvifp, 4); ppagep = NoSignExtend(dvifp, 4); h = v = w = x = y = z = 0; hh = vv = 0; sp = 0; fontptr = NULL; prevfont = NULL; if( count[0] < FirstPage || count[0] > LastPage ) SkipMode = TRUE; else SkipMode = FALSE; Emitting = (PassNo != 0) & !SkipMode; if( !SkipMode ) { if( PassNo == 0) { EMIT("%d @bop0\n", count[0]); #ifdef STATS if( Stats ) { Sndc0 = Sndc; Stnc0 = Stnc; Snbpx0 = Snbpxl; } else #endif if( (count[0] % 10) == 1 ) fprintf(stderr,"\n"); fprintf(stderr, "[%d", count[0] ); } else EMIT("%d @bop1\n", count[0]); } break; case EOP: if( !SkipMode ) { if( PassNo == 0 ) { /* start second pass on current page */ fseek(dvifp,cpagep,0); PassNo = 1; } else { /* end of second pass, and of page processing */ EMIT("@eop\n"); #ifdef STATS if( Stats ) fprintf(stderr," - %d total ch, %d diff ch, %d pxl bytes]\n", Stnc-Stnc0, Sndc-Sndc0, Snbpxl-Snbpx0); else #endif fprintf(stderr,"] "); PassNo = 0; } } else PassNo = 0; if( PassNo == 0 && Reverse ) { if( ppagep > 0 ) fseek(dvifp, ppagep, 0); else AllDone(); } break; case PUSH: if (sp >= STACKSIZE) Fatal("stack overflow"); stack[sp].h = h; stack[sp].v = v; stack[sp].w = w; stack[sp].x = x; stack[sp].y = y; stack[sp].z = z; sp++; break; case POP: --sp; if (sp < 0) Fatal("stack underflow"); h = stack[sp].h; v = stack[sp].v; w = stack[sp].w; x = stack[sp].x; y = stack[sp].y; z = stack[sp].z; break; case RIGHT1:case RIGHT2:case RIGHT3:case RIGHT4: val = SignExtend(dvifp,command-RIGHT1+1); if (Emitting) MoveOver(val); break; case W0: if (Emitting) MoveOver(w); break; case W1:case W2:case W3:case W4: w = SignExtend(dvifp,command-W1+1); if (Emitting) MoveOver(w); break; case X0: if (Emitting) MoveOver(x); break; case X1:case X2:case X3:case X4: x = SignExtend(dvifp,command-X1+1); if (Emitting) MoveOver(x); break; case DOWN1:case DOWN2:case DOWN3:case DOWN4: val = SignExtend(dvifp,command-DOWN1+1); if (Emitting) MoveDown(val); break; case Y0: if (Emitting) MoveDown(y); break; case Y1:case Y2:case Y3:case Y4: y = SignExtend(dvifp,command-Y1+1); if (Emitting) MoveDown(y); break; case Z0: if (Emitting) MoveDown(z); break; case Z1:case Z2:case Z3:case Z4: z = SignExtend(dvifp,command-Z1+1); if (Emitting) MoveDown(z); break; case FNT1:case FNT2:case FNT3:case FNT4: if (!SkipMode) { SetFntNum(NoSignExtend(dvifp,command-FNT1+1), Emitting); } break; case XXX1:case XXX2:case XXX3:case XXX4: k = NoSignExtend(dvifp,command-XXX1+1); GetBytes(dvifp, SpecialStr, k); if(Emitting) DoSpecial(SpecialStr, k); break; case FNT_DEF1:case FNT_DEF2:case FNT_DEF3:case FNT_DEF4: k = NoSignExtend(dvifp, command-FNT_DEF1+1); if (PreLoad || HasBeenRead(k) ) { SkipFontDef (k); } else { ReadFontDef (k); } break; case PRE: Fatal("PRE occurs within file"); break; case POST: AllDone(); break; case POST_POST: Fatal("POST_POST with no preceding POST"); break; default: if (command >= FONT_00 && command <= FONT_63) {if (!SkipMode) SetFntNum(command - FONT_00, Emitting);} else if (command >= SETC_000 && command <= SETC_127) {if (!SkipMode) SetString(command, PassNo);} else Fatal("%d is an undefined command", command); break; } } /*-->AbortRun*/ /**********************************************************************/ /*************************** AbortRun *******************************/ /**********************************************************************/ void AbortRun(code) int code; { exit(code); } /*-->ActualFactor*/ /**********************************************************************/ /************************** ActualFactor ****************************/ /**********************************************************************/ float /* compute the actual size factor given the approximation */ ActualFactor(unmodsize) int unmodsize; /* actually factor * 1000 */ { float realsize; /* the actual magnification factor */ realsize = (float)unmodsize / 1000.0; /* a real hack to correct for rounding in some cases--rkf */ if(unmodsize==1095) realsize = 1.095445; /*stephalf*/ else if(unmodsize==1315) realsize=1.314534; /*stepihalf*/ else if(unmodsize==2074) realsize=2.0736; /*stepiv*/ else if(unmodsize==2488) realsize=2.48832; /*stepv*/ else if(unmodsize==2986) realsize=2.985984; /*stepiv*/ /* the remaining magnification steps are represented with sufficient accuracy already */ return(realsize); } /*-->AllDone*/ /**********************************************************************/ /****************************** AllDone ******************************/ /**********************************************************************/ void AllDone() { char t; struct font_entry *p; EMIT("@end\n"); fprintf(stderr,"\n"); if (G_errenc && G_logging == 1 && G_logfile) { fseek(G_logfp, 0, 0); while ((t=getc(G_logfp)) != EOF) putchar(t); } if (G_logging == 1 && G_logfile) printf("Log file created\n"); #ifdef STATS if (Stats) { for( p=hfontptr; p!=NULL; p=p->next ) fprintf(stderr, "%s - %d total ch, %d diff ch, %d pxl bytes\n", p->psname, p->ncts, p->ncdl, p->nbpxl ); fprintf(stderr, "\nTotal number of characters typeset: %d\n", Stnc); fprintf(stderr, "Number of different characters downloaded: %d\n", Sndc); fprintf(stderr, "Number of bytes of pxl data downloaded: %d\n", Snbpxl); fprintf(stderr, "Optimal # of bytes of pxl data: %d\n", Sonbpx); } #endif AbortRun(G_errenc); } /*-->DecodeArgs*/ /*********************************************************************/ /***************************** DecodeArgs ****************************/ /*********************************************************************/ void DecodeArgs( argc, argv ) int argc; char *argv[]; { int argind; /* argument index for flags */ char curarea[STRSIZE]; /* current file area */ char curname[STRSIZE]; /* current file name */ char filename[STRSIZE]; /* file name */ char *tcp, *tcp1; /* temporary character pointers */ argind = 1; while (argind < argc) { tcp = argv[argind]; if (*tcp == '-') { tcp++; switch(isupper(*tcp) ? (*tcp-'A')+'a' : *tcp) { #ifdef DEBUG case 'd': /* d selects Debug output */ fprintf(stderr, "Selecting verbose mode\n"); Debug = TRUE; break; #endif case 'l': /* l prohibits logging of errors */ G_logging = -1; break; case 'p': /* p prohibits pre-font loading */ PreLoad = 0; Reverse = FALSE; /* must then process in forward order */ break; case 'a': /* a selects different pxl font area */ PXLpath = argv[++argind]; break; case 'f': /* next arg is starting pagenumber */ if( ++argind >= argc || sscanf(argv[argind], "%d", &FirstPage) != 1 ) Fatal("Argument is not a valid integer\n", 0); break; case 't': /* next arg is ending pagenumber */ if( ++argind >= argc || sscanf(argv[argind], "%d", &LastPage) != 1 ) Fatal("Argument is not a valid integer\n", 0); break; #ifdef USEGLOBALMAG case 'm': /* specify magnification to use */ switch( tolower(*++tcp) ) { case '\0': /* next arg is a magnification to use */ if( ++argind >= argc || sscanf(argv[argind], "%d", &usermag) != 1 ) Fatal("Argument is not a valid integer\n", 0); break; case '0': usermag = 1000; break; case 'h': usermag = 1095; break; case '1': usermag = 1200; break; case '2': usermag = 1440; break; case '3': usermag = 1728; break; case '4': usermag = 2074; break; default: Fatal("%c is a bad mag step\n", *tcp); } break; #endif case 'r': Reverse = FALSE; break; #ifdef STATS case 's': Stats = TRUE; break; #endif default: printf("%c is not a legal flag\n", *tcp); } } else { #ifdef PANOS tcp = rindex(argv[argind], '.'); /* split into directory + file name */ if (tcp == NULL) { curarea[0] = '\0'; tcp = argv[argind]; } else { strcpy(curarea, argv[argind]); curarea[tcp-argv[argind]+1] = '\0'; tcp += 1; } strcpy(curname, tcp); tcp1 = rindex(tcp, '-'); /* split into file name + extension */ if (tcp1 == NULL) strcat(curname, "-dvi"); strcpy(filename, curarea); strcat(filename, curname); if ((dvifp=BINARYOPEN(filename,"r")) == NULL) { fprintf(stderr,"\n"); fprintf(stderr,"%s: can't find DVI file \"%s\"\n\n", G_progname, filename); AbortRun(1); } strcpy(G_Logname, curname); strcat(G_Logname, "-log"); } #else tcp = rindex(argv[argind], '/'); /* split into directory + file name */ if (tcp == NULL) { curarea[0] = '\0'; tcp = argv[argind]; } else { strcpy(curarea, argv[argind]); curarea[tcp-argv[argind]+1] = '\0'; tcp += 1; } strcpy(curname, tcp); tcp1 = rindex(tcp, '.'); /* split into file name + extension */ if (tcp1 == NULL) strcat(curname, ".dvi"); strcpy(filename, curarea); strcat(filename, curname); if ((dvifp=BINARYOPEN(filename,"r")) == NULL) { fprintf(stderr,"\n"); fprintf(stderr,"%s: can't find DVI file \"%s\"\n\n", G_progname, filename); AbortRun(1); } strcpy(G_Logname, curname); strcat(G_Logname, ".log"); } #endif argind++; } if (dvifp == NULL) { fprintf(stderr, "\nusage: %s [-p] [-s] [-r] [-f n] [-t n] [-m{0|h|1|2|3|4| mag] [-a fontarea] dvifile\n\n", G_progname); AbortRun(1); } } /*-->DoConv*/ /*********************************************************************/ /******************************** DoConv ***************************/ /*********************************************************************/ int DoConv(num, den, convResolution) { register float conv; conv = ((float)num/(float)den) * #ifdef USEGLOBALMAG /* ActualFactor(mag) * why was this in as Actual Factor? jls */ ((float) mag/1000.0) * #endif ((float)convResolution/254000.0); return((int) (1.0 / conv + 0.5)); } /*-->DoSpecial*/ /*********************************************************************/ /***************************** DoSpecial ***************************/ /*********************************************************************/ void DoSpecial( str, n ) /* copy special file straight through */ char str[]; int n; { FILE *spfp; char t; str[n] = '\0'; if( (spfp=fopen(str,"r")) == NULL ) { fprintf(stderr,"Unable to open special file %d\n", str ); return; } fprintf(stderr," [%s", str); SetPosn(h, v); EMITS("@beginspecial\n"); while( (t = getc(spfp)) != EOF ) { EMITC(t); } EMITS("@endspecial\n"); fclose(spfp); fprintf(stderr,"]"); } /*-->EmitChar*/ /**********************************************************************/ /**************************** EmitChar ******************************/ /**********************************************************************/ void EmitChar(c, ce) /* output a character bitmap */ int c; struct char_entry *ce; { int i; register int j; register unsigned char *sl; register int cc; int nbpl, nwpl; float cw; /* char width, in "dots" - we rely on PostScript maintaining sufficient accuracy */ /* Output in PostScript coord system (y +ive up, x +ive right) (0,0) of char bitmap at lower left. Output scan lines from bottom to top */ if( fontptr->ncdl == 0 ) /* open font dict before first char */ EMIT("[ %d ] /%s @newfont\n", fontptr->font_mag, fontptr->psname ); if( fontptr != prevfont ) { /* because this isn't done on pass 0 */ EMIT("%s @sf\n", fontptr->psname); prevfont = fontptr; } EMITS("[<"); cc = 2; nbpl = (ce->width + 7) >> 3; nwpl = (ce->width + 31) >> 5; for(i = ce->height-1; i >= 0; i--) { sl = (unsigned char *)(ce->where.address.pixptr + i*nwpl); for(j = 0; j < nbpl; j++, sl++) { if( cc > 100 ) { EMITS("\n "); cc = 2; } EMITH(*sl); cc += 2; } } cw = (float)ce->tfmw / (float)hconv; EMIT("> %d %d %d %d %.3f] %d @dc\n", nbpl<<3, ce->height, ce->xOffset, (((int)ce->height)-ce->yOffset)-1, cw, c); fontptr->ncdl += 1; #ifdef STATS Snbpxl += nbpl*ce->height; fontptr->nbpxl += nbpl*ce->height; Sonbpx += (ce->width*ce->height + 7) >> 3; Sndc += 1; #endif } /*-->Fatal*/ /**********************************************************************/ /****************************** Fatal *******************************/ /**********************************************************************/ void Fatal(fmt, a, b, c)/* issue a fatal error message */ char *fmt; /* format */ char *a, *b, *c; /* arguments */ { if (G_logging == 1 && G_logfile) { fprintf(G_logfp, "%s: FATAL--", G_progname); fprintf(G_logfp, fmt, a, b, c); fprintf(G_logfp, "\n"); } fprintf(stderr,"\n"); fprintf(stderr, "%s: FATAL--", G_progname); fprintf(stderr, fmt, a, b, c); fprintf(stderr, "\n\n"); if (G_logging == 1) printf("Log file created\n"); AbortRun(1); } /*-->FindPostAmblePtr*/ /**********************************************************************/ /************************ FindPostAmblePtr **************************/ /**********************************************************************/ void FindPostAmblePtr(postambleptr) long *postambleptr; /* this routine will move to the end of the file and find the start of the postamble */ { int i; fseek (dvifp, (long) 0, 2); /* goto end of file */ *postambleptr = ftell (dvifp) - 4; fseek (dvifp, *postambleptr, 0); while (TRUE) { fseek (dvifp, --(*postambleptr), 0); if (((i = NoSignExtend(dvifp, 1)) != 223) && (i != DVIFORMAT)) Fatal ("Bad end of DVI file"); if (i == DVIFORMAT) break; } fseek (dvifp, (*postambleptr) - 4, 0); (*postambleptr) = NoSignExtend(dvifp, 4); fseek (dvifp, *postambleptr, 0); } /*-->GetBytes*/ /**********************************************************************/ /***************************** GetBytes *****************************/ /**********************************************************************/ void GetBytes(fp, cp, n) /* get n bytes from file fp */ register FILE *fp; /* file pointer */ register char *cp; /* character pointer */ register int n; /* number of bytes */ { while (n--) *cp++ = getc(fp); } /*-->GetFontDef*/ /**********************************************************************/ /**************************** GetFontDef *****************************/ /**********************************************************************/ void GetFontDef() /*********************************************************************** Read the font definitions as they are in the postamble of the DVI file. ***********************************************************************/ { char str[50], *calloc (); unsigned char byte; int i, fnamelen; while (((byte = NoSignExtend(dvifp, 1)) >= FNT_DEF1) && (byte <= FNT_DEF4)) { switch (byte) { case FNT_DEF1: ReadFontDef (NoSignExtend(dvifp, 1)); break; case FNT_DEF2: ReadFontDef (NoSignExtend(dvifp, 2)); break; case FNT_DEF3: ReadFontDef (NoSignExtend(dvifp, 3)); break; case FNT_DEF4: ReadFontDef (NoSignExtend(dvifp, 4)); break; default: Fatal ("Bad byte value in font defs"); break; } } if (byte != POST_POST) Fatal ("POST_POST missing after fontdefs"); } /*-->HasBeenRead*/ /**********************************************************************/ /*************************** HasBeenRead ****************************/ /**********************************************************************/ int HasBeenRead(k) int k; { struct font_entry *ptr; ptr = hfontptr; while ((ptr!=NULL) && (ptr->k!=k)) ptr = ptr->next; return( ptr != NULL ); } /*-->MoveDown*/ /**********************************************************************/ /**************************** MoveDown ******************************/ /**********************************************************************/ void MoveDown(a) int a; { v += a; } /*-->MoveOver*/ /**********************************************************************/ /**************************** MoveOver ******************************/ /**********************************************************************/ void MoveOver(b) int b; { h += b; } /*-->NoSignExtend*/ /**********************************************************************/ /*************************** NoSignExtend ***************************/ /**********************************************************************/ int NoSignExtend(fp, n) /* return n byte quantity from file fd */ register FILE *fp; /* file pointer */ register int n; /* number of bytes */ { register int x; /* number being constructed */ x = 0; while (n--) { x <<= 8; x |= getc(fp); } return(x); } /*-->OpenFontFile*/ /**********************************************************************/ /************************** OpenFontFile *****************************/ /**********************************************************************/ void OpenFontFile() /*********************************************************************** The original version of this dvi driver reopened the font file each time the font changed, resulting in an enormous number of relatively expensive file openings. This version keeps a cache of up to MAXOPEN open files, so that when a font change is made, the file pointer, pxlfp, can usually be updated from the cache. When the file is not found in the cache, it must be opened. In this case, the next empty slot in the cache is assigned, or if the cache is full, the least used font file is closed and its slot reassigned for the new file. Identification of the least used file is based on the counts of the number of times each file has been "opened" by this routine. On return, the file pointer is always repositioned to the beginning of the file. ***********************************************************************/ { register int i,least_used,current; #ifdef DEBUG if (Debug) fprintf(stderr, "Open Font file\n"); #endif if (pfontptr == fontptr) return; /* we need not have been called */ for (current = 1; (current <= nopen) && (pixel_files[current].pixel_file_id != fontptr->font_file_id); ++current) ; /* try to find file in open list */ if (current <= nopen) /* file already open */ { if( (pxlfp = pixel_files[current].pixel_file_id) != NOFILE ) fseek(pxlfp,0,0); /* reposition to start of file */ } else /* file not in open list */ { if (nopen < MAXOPEN) /* just add it to list */ current = ++nopen; else /* list full -- find least used file, */ { /* close it, and reuse slot for new file */ least_used = 1; for (i = 2; i <= MAXOPEN; ++i) if (pixel_files[least_used].use_count > pixel_files[i].use_count) least_used = i; if (pixel_files[least_used].pixel_file_id != NOFILE) { FILE *fid; struct font_entry *fp; fid = pixel_files[least_used].pixel_file_id; fp=hfontptr; /* mark file as being closed in the entry */ while (fp!=NULL && fp->font_file_id != fid) fp = fp->next; if (fp==NULL) Fatal("Open file %x not found in font entry list.\n", fid); else { fp->font_file_id = NULL; #ifdef STATS if (Stats) fprintf(stderr, "PXL file %s closed.\n", fp->name); #endif STATS } fclose( fid ); } current = least_used; } if ((pxlfp=BINARYOPEN(fontptr->name,"r")) == NULL) { Warning("PXL file %s could not be opened (%X)",fontptr->name,errno); pxlfp = NOFILE; } else { #ifdef STATS if (Stats) fprintf(stderr, "PXL file %s opened.\n", fontptr->name); #endif STATS } pixel_files[current].pixel_file_id = pxlfp; pixel_files[current].use_count = 0; } pfontptr = fontptr; /* make previous = current font */ fontptr->font_file_id = pxlfp; /* set file identifier */ pixel_files[current].use_count++; /* update reference count */ } /*-->PixRound*/ /**********************************************************************/ /***************************** PixRound *****************************/ /**********************************************************************/ int PixRound(x, conv) /* return rounded number of pixels */ register int x; /* in DVI units */ int conv; /* conversion factor */ { return((int)((x + (conv >> 1)) / conv)); } /*-->PutInt*/ /**********************************************************************/ /***************************** PutInt *******************************/ /**********************************************************************/ void PutInt(n) /* output an integer followed by a space */ register int n; { char buf[10]; register char *b; if( n == 0 ) EMITC('0'); else { if( n < 0 ) { EMITC('-'); n = -n; } for(b=buf; n>0; ) { *b++ = digit[n%10]; n /= 10; } for( ; b>buf; ) EMITC(*--b); } EMITC(' '); } /*-->PutOct*/ /**********************************************************************/ /***************************** PutOct *******************************/ /**********************************************************************/ void PutOct(n) /* output an 3 digit octal number preceded by a "\" */ register int n; { EMITC( '\\' ); EMITC( digit[(n&0300)>>6] ); EMITC( digit[(n&0070)>>3] ); EMITC( digit[n&0007] ); } /*-->ReadFontDef*/ /**********************************************************************/ /**************************** ReadFontDef ***************************/ /**********************************************************************/ int ReadFontDef(k) int k; { int t, i; register struct font_entry *tfontptr; /* temporary font_entry pointer */ register struct char_entry *tcharptr;/* temporary char_entry pointer */ char *direct, *tcp, *tcp1; int found; char curarea[STRSIZE]; if ((tfontptr = NEW(struct font_entry)) == NULL) Fatal("can't malloc space for font_entry"); tfontptr->next = hfontptr; tfontptr->font_file_id = NULL; fontptr = hfontptr = tfontptr; tfontptr->ncdl = 0; #ifdef STATS tfontptr->nbpxl = 0; tfontptr->ncts = 0; #endif tfontptr->k = k; tfontptr->c = NoSignExtend(dvifp, 4); /* checksum */ tfontptr->s = NoSignExtend(dvifp, 4); /* space size */ tfontptr->d = NoSignExtend(dvifp, 4); /* design size */ tfontptr->a = NoSignExtend(dvifp, 1); /* area length for font name */ tfontptr->l = NoSignExtend(dvifp, 1); /* device length */ GetBytes(dvifp, tfontptr->n, tfontptr->a+tfontptr->l); tfontptr->n[tfontptr->a+tfontptr->l] = '\0'; tfontptr->font_space = tfontptr->s/6; /* never used */ tfontptr->font_mag = (int)((ActualFactor((int)(((float)tfontptr->s/ (float)tfontptr->d)*1000.0 + 0.5)) * #ifdef USEGLOBALMAG ActualFactor(mag) * #endif (float)RESOLUTION * 5.0) + 0.5); sprintf(tfontptr->psname, "%s.%d", tfontptr->n, tfontptr->font_mag); if (tfontptr->a != 0) { #ifdef PANOS sprintf(tfontptr->name, "%s.%dpxl", tfontptr->n, tfontptr->font_mag); #else sprintf(tfontptr->name, "%s.%dpxl", tfontptr->n, tfontptr->font_mag); #endif } else { direct = PXLpath; found = FALSE; do { tcp = index(direct, ':'); if (tcp == NULL) tcp = strlen(direct) + direct; strncpy(curarea, direct, tcp-direct); tcp1 = curarea + (tcp - direct); #ifdef PANOS *tcp1++ = '.'; #else *tcp1++ = '/'; #endif *tcp1++ = '\0'; #ifdef PANOS sprintf(tfontptr->name, "%sm%d.%s-pxl", curarea, tfontptr->font_mag, tfontptr->n); #else sprintf(tfontptr->name, "%s%s.%dpxl", curarea, tfontptr->n, tfontptr->font_mag); #endif found = (access(tfontptr->name, READ) == 0); if (*tcp) direct = tcp + 1; else direct = tcp; } while ( !found && *direct != '\0'); } if (tfontptr != pfontptr) OpenFontFile(); if ( pxlfp == NOFILE ) { /* allow missing pxl files */ tfontptr->magnification = 0; tfontptr->designsize = 0; for (i = FIRSTPXLCHAR; i <= LASTPXLCHAR; i++) { tcharptr = &(tfontptr->ch[i]); tcharptr->width = 0; tcharptr->height = 0; tcharptr->xOffset= 0; tcharptr->yOffset = 0; tcharptr->where.isloaded = FALSE; tcharptr->where.address.fileOffset = NONEXISTANT; tcharptr->tfmw = 0; } return; } if ((t = NoSignExtend(pxlfp, 4)) != PXLID) Fatal("PXL ID = %d, can only process PXL ID = %d files", t, PXLID); fseek(pxlfp, -20, 2); t = NoSignExtend(pxlfp, 4); if ((tfontptr->c != 0) && (t != 0) && (tfontptr->c != t)) Warning("font = \"%s\",\n-->font checksum = %d,\n-->dvi checksum = %d", tfontptr->name, tfontptr->c, t); tfontptr->magnification = NoSignExtend(pxlfp, 4); tfontptr->designsize = NoSignExtend(pxlfp, 4); fseek(pxlfp, NoSignExtend(pxlfp, 4) * 4, 0); for (i = FIRSTPXLCHAR; i <= LASTPXLCHAR; i++) { tcharptr = &(tfontptr->ch[i]); tcharptr->width = NoSignExtend(pxlfp, 2); tcharptr->height = NoSignExtend(pxlfp, 2); tcharptr->xOffset= SignExtend(pxlfp, 2); tcharptr->yOffset = SignExtend(pxlfp, 2); tcharptr->where.isloaded = FALSE; tcharptr->where.address.fileOffset = NoSignExtend(pxlfp, 4) * 4; tcharptr->tfmw = ((float)NoSignExtend(pxlfp, 4)*(float)tfontptr->s) / (float)(1<<20); } } /*-->ReadPostAmble*/ /**********************************************************************/ /************************** ReadPostAmble ***************************/ /**********************************************************************/ void ReadPostAmble(load) int load; /*********************************************************************** This routine is used to read in the postamble values. It initializes the magnification and checks the stack height prior to starting printing the document. ***********************************************************************/ { FindPostAmblePtr (&postambleptr); if (NoSignExtend(dvifp, 1) != POST) Fatal ("POST missing at head of postamble"); #ifdef DEBUG if (Debug) fprintf (stderr, "got POST command\n"); #endif ppagep = NoSignExtend(dvifp, 4); num = NoSignExtend(dvifp, 4); den = NoSignExtend(dvifp, 4); mag = NoSignExtend(dvifp, 4); if( usermag > 0 ) mag = usermag; #ifndef USEGLOBALMAG if( mag != 1000 ) fprintf(stderr, "Magnification of %d ignored.\n", mag); #endif hconv = DoConv(num, den, hconvRESOLUTION); vconv = DoConv(num, den, vconvRESOLUTION); NoSignExtend(dvifp, 4); /* height-plus-depth of tallest page */ NoSignExtend(dvifp, 4); /* width of widest page */ if (NoSignExtend(dvifp, 2) >= STACKSIZE) Fatal ("Stack size is too small"); NoSignExtend(dvifp, 2); /* this reads the number of pages in */ /* the DVI file */ #ifdef DEBUG if (Debug) fprintf (stderr, "now reading font defs"); #endif if (load) GetFontDef (); } /*-->SetChar*/ /**********************************************************************/ /***************************** SetChar ******************************/ /**********************************************************************/ int buffer[8]; LoadAChar(c, ptr) int c; register struct char_entry *ptr; { long *pr; register int nints; if (ptr->where.address.fileOffset == NONEXISTANT) { ptr->where.address.pixptr = NULL; ptr->where.isloaded = TRUE; return; } OpenFontFile(); fseek(pxlfp, ptr->where.address.fileOffset, 0); nints = ((ptr->width + 31) >> 5) * ptr->height; if( (pr = (long *)malloc( nints*sizeof(long) )) == NULL ) Fatal("Unable to allocate memory for char\n"); fread(pr, 4, nints, pxlfp); ptr->where.address.pixptr = pr; ptr->where.isloaded = TRUE; EmitChar(c, ptr); /* we should really free the space used by the PXL data after this point, but it is not large, and besides, we may want to be more clever in the future, about sending bitmaps. So keep the data around */ } void SetChar(c, command, PassNo) int c, command, PassNo; { register struct char_entry *ptr; /* temporary char_entry pointer */ int k; ptr = &(fontptr->ch[c]); if (!ptr->where.isloaded) LoadAChar(c, ptr); if (PassNo==0) return; SetPosn(h,v); if (fontptr->font_file_id != NOFILE) { /* ignore missing fonts */ EMITN(c); EMITS("c\n"); hh += ptr->tfmw; } if (command <= SET4) h += ptr->tfmw; #ifdef STATS Stnc += 1; fontptr->ncts += 1; #endif } /*-->SetFntNum*/ /**********************************************************************/ /**************************** SetFntNum *****************************/ /**********************************************************************/ void SetFntNum(k, Emitting) int k, Emitting; /* this routine is used to specify the font to be used in printing future characters */ { fontptr = hfontptr; while ((fontptr!=NULL) && (fontptr->k!=k)) fontptr = fontptr->next; if (fontptr == NULL) Fatal("font %d undefined", k); if (Emitting && (fontptr->font_file_id != NOFILE) ) EMIT("%s @sf\n", fontptr->psname); } /*-->SetPosn*/ /**********************************************************************/ /***************************** SetPosn ******************************/ /**********************************************************************/ void SetPosn(x, y) /* output a positioning command */ int x, y; { int rx,ry; #ifdef USERELPOS if (y == vv) { /* use relative movement if just moving horizontally */ if ( x != hh ) { EMITN(rx=PixRound(x-hh,hconv)); EMITS("r "); hh += rx*hconv; } } else { #endif USERELPOS EMITN(rx=PixRound(x,hconv)); EMITN(PTOP-(ry=PixRound(y,vconv))); EMITS("p "); hh = rx*hconv; /* must know where device "really" is horizontally, for rel. posning. */ vv = y; /* but we always use direct positioning for vertical movement */ #ifdef USERELPOS } #endif USERELPOS } /*-->SetRule*/ /**********************************************************************/ /***************************** SetRule ******************************/ /**********************************************************************/ void SetRule(a, b, Set) int a, b; BOOLEAN Set; { /* this routine will draw a rule */ if( a > 0 && b > 0 ) { SetPosn(h,v); /* lower left corner */ EMITN(PixRound(b,hconv)); /* width */ EMITN(PixRound(a,vconv)); /* height */ EMITS("ru\n"); } if (Set) h += b; } /*-->SetString*/ /**********************************************************************/ /***************************** SetString ****************************/ /**********************************************************************/ void SetString(firstch, PassNo) /* read and set a consecutive string of chars */ int firstch, PassNo; { char s[256]; register char *sp; register int c; register struct char_entry *ptr; int len, hhold; /* read entire string of chars */ for(c = firstch, sp = s; c >= SETC_000 && c <= SETC_127; ) { *sp++ = c; c = NoSignExtend(dvifp, 1); } fseek(dvifp, -1, 1); /* backup one character */ len = sp - s; /* NULL's are valid chars, so cant use for string termination */ /* ensure that all characters are loaded, */ for(sp = s; sp < s+len; sp++) { ptr = &(fontptr->ch[*sp]); if( !(ptr->where.isloaded) ) LoadAChar(*sp, ptr); } /* emit the instructions */ if( PassNo == 0 ) return; SetPosn(h, v); if( fontptr->font_file_id != NOFILE ) { /* ignore missing fonts */ if( len <= 1 ) { EMITN(s[0]); EMITS("c\n"); } else { EMITC('('); for( sp=s; sp < s+len; sp++) { if( *sp < ' ' || *sp >= 0177 ) EMITO(*sp); else if( *sp == '(' || *sp == ')' || *sp == '\\') { EMITC('\\'); EMITC(*sp); } else EMITC(*sp); } EMITS(") s\n"); } } /* compute updated positions */ hhold = hh; for(sp = s; sp < s+len; sp++) { ptr = &(fontptr->ch[*sp]); h += ptr->tfmw; hh += ptr->tfmw; } if( fontptr->font_file_id == NOFILE ) hh = hhold; /* because it didn't move */ #ifdef STATS Stnc += len; fontptr->ncts += len; #endif } /*-->SignExtend*/ /**********************************************************************/ /**************************** SignExtend ****************************/ /**********************************************************************/ int SignExtend(fp, n) /* return n byte quantity from file fd */ register FILE *fp; /* file pointer */ register int n; /* number of bytes */ { int n1; /* number of bytes */ register int x; /* number being constructed */ #ifdef PANOS int s; #endif x = getc(fp); /* get first (high-order) byte */ n1 = n--; while (n--) { x <<= 8; x |= getc(fp); } /* NOTE: This code assumes that the right-shift is an arithmetic, rather than logical, shift which will propagate the sign bit right. According to Kernighan and Ritchie, this is compiler dependent! */ #ifdef PANOS s = 32-8*n1; asm { LSHD s,x; NEGD s,s; ASHD s,x; } #else x<<=32-8*n1; x>>=32-8*n1; /* sign extend */ #endif #ifdef DEBUG if (Debug) { fprintf(stderr,"\tSignExtend(fp,%d)=%X\n",n1,x); } #endif return(x); } /*-->SkipFontDef*/ /**********************************************************************/ /**************************** SkipFontDef ***************************/ /**********************************************************************/ void SkipFontDef(k) int k; { int a, l; char n[STRSIZE]; NoSignExtend(dvifp, 4); NoSignExtend(dvifp, 4); NoSignExtend(dvifp, 4); a = NoSignExtend(dvifp, 1); l = NoSignExtend(dvifp, 1); GetBytes(dvifp, n, a+l); } /*-->Warning*/ /**********************************************************************/ /***************************** Warning ******************************/ /**********************************************************************/ void Warning(fmt, a, b, c) /* issue a warning */ char *fmt; /* format */ char *a, *b, *c; /* arguments */ { if (G_logging == 0) { if (G_logfile) G_logfp=fopen(G_Logname,"w+"); else G_logfp=stderr; G_logging = 1; if (G_logfp == NULL) G_logging = -1; } G_errenc = TRUE; if (G_logging == 1) { fprintf(G_logfp, fmt, a, b, c); fprintf(G_logfp,"\n"); } }