dvix27 - DVI to Xerox 2700 driver (Part 1 of 2)
cudcv at warwick.UUCP
cudcv at warwick.UUCP
Sat Feb 7 01:57:05 AEST 1987
<munch>
Here is a dvi to Xerox 2700 driver in C. It runs under Unix on an
assortment of machines (VAX, Gould, Sun under 2.0 & 3.0). It reads PK
files, as well as PXL files, so might be of interest even to people
with 2700's. It is based (heavily) on the dvi2ps that comes with Unix
TeX. It works hard to do the best it can with the 2700's limited
memory, it assembles fonts on the fly, sending only the characters it
needs. It tries to load down the fonts for the whole document at
once, but if it looks like it's running out of memory it will back
off, print as much as it can, and try again. It's been running a few
weeks here and, whilst I expect there are still bugs left, it seems to
have stabilised (if Christer Lindh <clindh at uucp.sems> is listening - I
did try to send this to you, but I think there must be a black hole in
the middle of the English Channel). One gotcha - laser.setup should
have the \E's replaced by real ESC characters. Have fun ...
------------------ cut here ------------------------------------------
#!/bin/sh
echo 'Start of DVI -> 2700 driver, part 01 of 02:'
echo 'x - dvix27.c'
sed 's/^X//' > dvix27.c << '/'
X#define VERSION "2.10"
X
X/*
X *
X * AUTHOR(s)
X * Mark Senn wrote the early versions of this program for the
X * BBN BitGraph. Stephan Bechtolsheim, Bob Brown, Richard
X * Furuta, James Schaad and Robert Wells improved it. Norm
X * Hutchinson ported the program to the Sun. Neal Holtz ported
X * it to the Apollo, and from there to producing PostScript
X * output. Scott Jones added intelligent font substitution.
X * Rob McMahon converted from this version to the Xerox 2700.
X */
X
X/* Basic method:
X *
X * Using the local font cacheing machinery that was in the previewer, we
X * can easily manage to send the bitmap for each chracter only once. Two
X * passes are made over the DVI file. The first pass simply outputs the
X * bitmaps for all characters that haven't been sent before for this
X * section of the document. The section ends when the font job becomes
X * too complicated, or at the end of the document. The second pass on a
X * section outputs all the character setting and positioning commands.
X *
X */
X
X
X/* Change log:
X *
X * Early 1985, (nmh) -- ported sun version to Apollo.
X * A little later (nmh) -- changed to continue on in the event of missing
X * font files.
X * 30-Mar-85 (nmh) -- added -a option to specify a different PXL area
X * 30-Mar-85 (nmh) -- changed default PXL area to /pxl118
X * 31-Mar-85 (nmh) -- fixed bug in OpenFontFile() regarding more than MAXOPEN
X * PXL files -- changed to mark files as closed in font_entry.
X * 7-Apr-85 (nmh) -- made command line argument decoding case insensitive.
X * cleaned up handling of DVI file name argument.
X * 30-May-85 (nmh) -- new version; hacked to output PostScript commands
X * 6-Jun-85 (nmh) -- added relative positioning (20% smaller PostScript output)
X * add -m option to specify mag
X * 11-Jun-85 (nmh) -- fixed bug regarding char spacings in very long "words"
X * 12-Jun-85 (nmh) -- v1.02 - process DVI pages in reverse order
X * 13-Jun-85 (nmh) -- fixed bug re PXL files getting opened too often when no PreLoad
X * 14-Jun-85 (nmh) -- font dict created in PostScript only when 1st char of font downloaded
X * add -m0 -mh -m1 etc. to specify magsteps
X * 16-Aug-85 (nmh) -- added -c option t0 create output file in spool area (Apollo specific)
X * added -h option to copy header file to output
X * added -o option to pass options through to PostScript
X * 20-Aug-85 (nmh) -- v1.03
X * 24-Aug-85 (nmh) -- add -q option (for quiet operation).
X * changed -o option to check PostScript option
X * changed to output coordinates in TeX system (but
X * scaled to raster units) -- (0,0) at 1" in and down from
X * top left (better for use with different size paper).
X * -- v2.00
X * 25-Aug-85 (nmh) -- added dictionary enclosure to Tex.ps, and output
X * suitable prolog here.
X * 26-Aug-85 (nmh) -- changes to tex.ps to support Macintosh documents.
X * 14-Sep-85 (nmh) -- added keyword=value decoding to \special;
X * 15-Sep-85 (nmh) -- added -i file option.
X * 23-Sep-85 (saj) -- added font substitution for case when font is
X * unavailable at requested mag. (a frequent occurrence
X * with some macro packages like LaTeX)
X * 6-Jan-87 (cudcv) - major conversion to Xerox 2700.
X * cope with PK files, and with colon separated paths
X * for pixel area.
X */
X
X
X/**********************************************************************/
X/************************ Global Definitions ************************/
X/**********************************************************************/
X
X/* This version purports to drive a Xerox 2700 */
X
X
Xtypedef int BOOLEAN;
X#define NEW(A) ((A *) malloc(sizeof(A)))
X#define DEBUG 1 /* for massive printing of input */
X /* trace information; select by -d */
X /* option after filename: */
X /* dviview filename -d */
X#ifdef DEBUG
Xint Debug = 0;
X#endif
X /* to enable statistics reporting via -s option */
X#define STATS
X
X#define BINARYOPEN fopen /* byte-oriented host version */
X
X#define ARITHRSHIFT 1 /* define if ">>" operator is a */
X /* sign-propagating arithmetic */
X /* right shift */
X#define USEGLOBALMAG 1 /* when defined, the dvi global */
X /* magnification is applied */
X
X/* We can leave USEGLOBALMAG undefined when we have a limited
X number of font magnifications (at 300dpi) available. Otherwise, we
X will simply complain about missing PXL files
X */
X
X/* #undef USEGLOBALMAG */
X
X /* define for "optimal" relative postioning, rather
X than absolute. Relative can reduce size of postcript
X output 20% (and reduce print time by almost as much */
X#define USERELPOS 1
X
X#define DVIFORMAT 2
X#define TRUE 1
X#define FALSE 0
X#define FIRSTPXLCHAR 0
X#define LASTPXLCHAR 127
X
X#ifndef FONTAREA
X#define FONTAREA "/usr/lib/tex/fonts"
X#endif
X
X#ifdef apollo
X#ifndef SPOOLFILE
X#define SPOOLFILE "/local/spool/laser/tex."
X#endif
X#define MAXFLEN 28
X#endif apollo
X
X#ifdef apollo
X#define MAXOPEN 45 /* limit on number of open PXL files */
X#else !apollo
X#define MAXOPEN 45 /* limit on number of open PXL files */
X#endif
X
X#define NPXLCHARS 128
X#define PXLID 1001
X#define PK_POST 245
X#define PK_PRE 247
X#define PK_ID 89
X#define READ 4 /* for access() */
X#define RESOLUTION 300
X#define hconvRESOLUTION 300
X#define vconvRESOLUTION 300
X#define STACKSIZE 100
X#define STRSIZE 257
X#define MAXnPXLvec 10 /* number of components in PXLpath */
X#define NONEXISTANT -1 /* offset for PXL files not found */
X#define NO_FILE (FILE *)-1
X#define FF '\014'
X#define ESC '\033'
X#define DEL '\177'
X#define MAXFONTID 9 /* number of assigned fonts on 2700 */
X#define MINCH 32 /* minimum char in 2700 font */
X#define MAXCH 254 /* maximum " " " " */
X#define MAX_PAT 0x40000 /* maximum pattern data in one font */
X#define MAX_LDFONTS 14 /* maximum number of loaded fonts */
X#define MAX_FONT_DATA 150000 /* maximum number of font bytes */
X#define TOP 3500 /* top of page - 1" in pixels for A4 */
X#define LEFT 0 /* indent 1" from left margin */
X
X/* may need to byte swap for xerox */
X#ifdef vax
X#define htoxs(x) (x)
X#else
X#define htoxs(x) ((((x) & 0xff) << 8) | (((x) >> 8) & 0xff))
X#endif
X#define xtohs(x) htoxs(x)
X
X#ifdef apollo /* define for enabling of -c option (create output file) */
X#define CREOPT
X#endif apollo
X
X/**********************************************************************/
X/*********************** external definitions ***********************/
X/**********************************************************************/
X
X#include "commands.h"
X#include <sys/param.h>
X#include <sys/file.h>
X#include <strings.h>
X#include <signal.h>
X#include <stdio.h>
X#include "findfile.h"
X#include "fontstr.h"
X#include <ctype.h>
X#include <errno.h>
X
Xextern int errno;
Xint access();
Xchar *index();
Xchar *malloc();
Xint free();
Xchar *rindex();
Xchar *sprintf();
Xchar *strcpy();
Xchar *logname();
X
X#define EQ(a,b) (strcmp(a,b)==0)
X
X /* output a formatted string */
X#define EMIT (void) fprintf
X /* output a simple string */
X#define EMITS(s) fputs(s,outfp)
X /* output an escaped octal number */
X#define EMITO(c) PutOct(c)
X /* output a decimal integer */
X#define EMITN(n) PutInt(n)
X /* output a byte value in Hex */
X#define EMITH(h) (void) putc(*(digit+((h>>4)&0xF)),outfp),\
X (void) putc(*(digit+(h&0xF)),outfp)
X /* output a single character */
X#define EMITC(c) (void) putc(c,outfp)
X /* output a scaled X dimension */
X#define EMITX(x) PutInt(PixRound(x,hconv))
X /* output a scaled Y dimension */
X#define EMITY(y) PutInt(PixRound(y,vconv))
X
X /* formatted i/o was killing us, so build some tables */
Xchar *digit = "0123456789ABCDEF";
X
Xtypedef union {
X int code;
X struct {
X#ifndef vax
X unsigned int spare :24;
X unsigned int flag_dyn_f :4;
X unsigned int flag_turn_on :1;
X unsigned int flag_extended :1;
X unsigned int flag_length_prefix :2;
X#else
X unsigned int flag_length_prefix :2;
X unsigned int flag_extended :1;
X unsigned int flag_turn_on :1;
X unsigned int flag_dyn_f :4;
X unsigned int spare :24;
X#endif
X } flag_split;
X} FlagByte;
X#define dyn_f flag_split.flag_dyn_f
X#define turn_on flag_split.flag_turn_on
X#define extended flag_split.flag_extended
X#define length_prefix flag_split.flag_length_prefix
X
X/**********************************************************************/
X/************************* Global Procedures ************************/
X/**********************************************************************/
X
X/* Note: Global procedures are declared here in alphabetical order, with
X those which do not return values typed "void". Their bodies occur in
X alphabetical order following the main() procedure. The names are
X kept unique in the first 6 characters for portability. */
X
Xvoid AbortRun();
Xfloat ActualFactor();
Xvoid AllDone();
XFILE* BINARYOPEN();
Xvoid CopyFile();
Xvoid DecodeArgs();
Xvoid DoSpecial();
Xvoid EmitChar();
Xvoid Encode();
Xvoid Fatal();
Xvoid FindPostAmblePtr();
Xvoid FlushXFont();
Xvoid GetBytes();
Xvoid GetFontDef();
Xchar *GetKeyStr();
Xint GetKeyVal();
Xint HasBeenRead();
Xint IsSame();
Xvoid lcase();
Xvoid MoveDown();
Xvoid MoveOver();
Xint NoSignExtend(); /* see cautionary note in code, re arithmetic vs logical shifts */
Xvoid OpenFontFile();
X#ifdef CREOPT
XFILE* OpenOutput();
X#endif CREOPT
Xint PixRound();
Xvoid PutInt();
Xint ReadFontDef();
Xvoid ReadPostAmble();
Xvoid SetChar();
Xvoid SetFntNum();
Xvoid SetPosn();
Xvoid SetRule();
X/* void SetString(); */
Xvoid SetXFont();
Xint SignExtend(); /* see cautionary note in code, re arithmetic vs logical shifts */
Xvoid SkipFontDef();
XFlagByte SkipSpecials();
Xvoid Warning();
X
X
X/**********************************************************************/
X/*********************** Font Data Structures ***********************/
X/**********************************************************************/
X
X
Xstruct char_entry { /* character entry */
X unsigned short width, height;/* width and height in pixels */
X short xOffset, yOffset; /* x offset and y offset in pixels */
X struct {
X int isloaded; /* == loadpass if in current load */
X union {
X long fileOffset;
X long *pixptr; } address;
X struct xfont *xfont; /* 2700 font this character lives in */
X int glyph; /* position in 2700 font */
X } where;
X int tfmw; /* TFM width */
X int realw; /* best the 2700 can do */
X int kern; /* correction for +ve xOffset */
X FlagByte flag; /* PK flag byte */
X };
X
Xstruct font_entry { /* font entry */
X int k, c, s, d, a, l;
X char n[STRSIZE]; /* FNT_DEF command parameters */
X int font_space; /* computed from FNT_DEF s parameter */
X int font_mag; /* computed from FNT_DEF s and d parameters */
X char name[STRSIZE]; /* full name of PXL file */
X FILE *font_file_id; /* file identifier (NO_FILE if none) */
X int type; /* FONT_PK or FONT_PXL */
X long offset; /* offset in PK file */
X int magnification; /* magnification read from PXL file */
X int designsize; /* design size read from PXL file */
X struct char_entry ch[NPXLCHARS];/* character information */
X struct font_entry *next;
X int ncdl; /* # of different chars actually downloaded */
X#ifdef STATS
X int nbpxl; /* # of bytes of PXL data downloaded */
X int ncts; /* total # of characters typeset */
X#endif
X};
X#define FONT_PXL 0 /* this is a PXL font */
X#define FONT_PK 1 /* this is a PK font */
X
Xstruct pixel_list
X{
X FILE *pixel_file_id; /* file identifier */
X struct font_entry *font_entry; /* font entry this refers to */
X int use_count; /* count of "opens" */
X };
X
Xstruct xfont {
X struct xfont *next; /* list of fonts */
X char xname[STRSIZE]; /* 2700 font name */
X int glyph; /* maximum glyph in this font so far */
X int usage; /* usage since assignment */
X};
X
X/**********************************************************************/
X/************************* Global Variables *************************/
X/**********************************************************************/
X
Xint FirstPage = -1000000; /* first page to print (uses count0) */
Xint LastPage = 1000000; /* last page to print */
X
Xchar filename[STRSIZE]; /* DVI file name */
X
X#ifdef CREOPT
Xint G_create = FALSE; /* create an output file in spool area ? */
X#endif
Xint G_errenc = FALSE; /* has an error been encountered? */
Xchar G_Logname[STRSIZE]; /* name of log file, if created */
Xint G_logging = 0; /* Are we logging warning messages? */
Xint G_logfile = FALSE; /* Are these messages going to a log file? */
XFILE *G_logfp; /* log file pointer (for errors) */
Xchar G_progname[STRSIZE]; /* program name */
Xint G_quiet = FALSE; /* for quiet operation */
Xint G_nowarn = FALSE; /* don't print out warnings */
X
Xint hconv, vconv; /* converts DVI units to pixels */
Xint den; /* denominator specified in preamble */
XFILE *dvifp = NULL; /* DVI file pointer */
Xint PreLoad = TRUE; /* preload the font descriptions? */
Xstruct font_entry *prevfont=NULL; /* font_entry pointer, previous character */
Xstruct font_entry *fontptr; /* font_entry pointer */
Xstruct font_entry *hfontptr=NULL;/* font_entry pointer */
Xint h; /* current horizontal position */
Xint hh = -9999; /* current h on device */
Xint v; /* current vertical position */
Xint vv = -9999; /* current v on device */
Xint mag; /* magnification specified in preamble */
Xint ndone = 0; /* number of pages converted */
Xint nopen; /* number of open PXL files */
Xint num; /* numerator specified in preamble */
X#ifdef CREOPT
Xchar outfname[256]; /* name of output file */
X#endif CREOPT
XFILE *outfp = NULL; /* output file */
Xstruct font_entry *pfontptr = NULL; /* previous font_entry pointer */
Xstruct pixel_list pixel_files[MAXOPEN+1];
X /* list of open PXL file identifiers */
Xlong postambleptr; /* Pointer to the postamble */
XFILE *pxlfp; /* PXL file pointer */
Xchar *PXLpath; /* PXL path name for search */
Xchar *PXLvec[MAXnPXLvec]; /* " split into components at : */
Xint nPXLvec; /* number of components in " */
Xlong ppagep; /* previous page pointer */
Xchar rootname[STRSIZE]; /* DVI filename without extension */
X#ifdef STATS
Xint Stats = FALSE; /* are we reporting stats ? */
Xint Snbpxl = 0; /* # of bytes of pixel data */
Xint Sonbpx = 0; /* "optimal" number of bytes of pixel data */
Xint Sndc = 0; /* # of different characters typeset */
Xint Stnc = 0; /* total # of chars typeset */
Xint Snbpx0, Sndc0, Stnc0; /* used for printing incremental changes per dvi page */
X#endif
X
Xint usermag = 0; /* user specified magnification */
Xint loadpass; /* in nth font load */
Xint Complex = FALSE; /* section too complex - print it */
Xint Emitting = FALSE; /* outputting typsetting instructions? */
Xint SkipMode = FALSE; /* in skip mode flag */
Xstruct xfont *curxfont = NULL; /* current font on 2700 */
Xstruct xfont *headxfont = NULL; /* list of 2700 fonts */
Xint nxfonts = 0; /* number of 2700 fonts so far */
Xlong total_font_data; /* total bytes of font data */
Xstruct xheader xheader; /* header for 2700 font */
Xchar qual_tab[256] = { 0 }; /* qualification table (unused) */
Xstruct xchardesc lut_tab [256]; /* character lookup table in current font */
Xstruct xchardesc space_glyph = { /* single pixel space */
X htoxs(2), 0, 0, 61, -5, 0
X};
Xchar patt_tab[MAX_PAT]; /* patterns for 2700 characters */
Xint next_free; /* next free slot in patt_tab */
Xstruct xfont *assigned_font[MAXFONTID]; /* fonts with assigned ID's */
X
X/**********************************************************************/
X/******************************* main *******************************/
X/**********************************************************************/
X
Xmain(argc, argv)
Xint argc;
Xchar *argv[];
X
X{
X struct stack_entry { /* stack entry */
X int h, v, w, x, y, z; /* what's on stack */
X };
X
X
X int command; /* current command */
X int count[10]; /* the 10 counters at begining of each page */
X long cpagep; /* current page pointer */
X long spagep, tpagep; /* extent of this section */
X register int i; /* command parameter; loop index */
X int k; /* temporary parameter */
X char n[STRSIZE]; /* command parameter */
X int PassNo = 0; /* which pass over the DVI page are we on? */
X int sp; /* stack pointer */
X struct stack_entry stack[STACKSIZE]; /* stack */
X char SpecialStr[STRSIZE]; /* "\special" strings */
X int val, val2; /* temporarys to hold command information*/
X int w; /* current horizontal spacing */
X int x; /* current horizontal spacing */
X int y; /* current vertical spacing */
X int z; /* current vertical spacing */
X
X nopen = 0;
X (void) strcpy(G_progname, argv[0]);
X
X PXLpath = FONTAREA; /* default font area */
X
X DecodeArgs( argc, argv );
X
X { /* split PXLpath into vec */
X char *p;
X
X nPXLvec = 1;
X PXLvec[0] = PXLpath;
X
X while ((p = index(PXLpath, ':')) != 0 && nPXLvec < MAXnPXLvec) {
X *p++ = '\0';
X PXLvec[nPXLvec++] = p;
X }
X }
X
X#ifdef apollo
X set_sbrk_size( 2048*1024 );
X#endif
X
X if ((i = NoSignExtend(dvifp, 1)) != PRE) {
X (void) fprintf(stderr,"\n");
X Fatal("%s: PRE doesn't occur first--are you sure this is a DVI file?\n\n",
X G_progname);
X }
X
X i = SignExtend(dvifp, 1);
X if (i != DVIFORMAT) {
X (void) fprintf(stderr,"\n");
X Fatal("%s: DVI format = %d, can only process DVI format %d files\n\n",
X G_progname, i, DVIFORMAT);
X }
X
X#ifdef CREOPT
X if( G_create )
X outfp = OpenOutput();
X else
X#endif CREOPT
X outfp = stdout;
X
X /* it is important that these be the very first things output !!! */
X EMIT(outfp,"%c+X\n",ESC);
X /* set margins for A4 */
X EMIT(outfp,"%cm700,0,0,0,495\n",ESC);
X
X if (PreLoad) {
X ReadPostAmble(TRUE);
X (void) fseek(dvifp, (long) 14, 0);
X }
X else {
X num = NoSignExtend(dvifp, 4);
X den = NoSignExtend(dvifp, 4);
X mag = NoSignExtend(dvifp, 4);
X#ifdef USEGLOBALMAG
X if( usermag > 0 && usermag != mag )
X (void) fprintf(stderr, "DVI magnification of %d over-ridden by user mag of %d\n", mag, usermag );
X#endif
X if( usermag > 0 ) mag = usermag;
X#ifndef USEGLOBALMAG
X if( mag != 1000 )
X (void) fprintf(stderr, "Magnification of %d ignored.\n", mag);
X#endif
X hconv = DoConv(num, den, hconvRESOLUTION);
X vconv = DoConv(num, den, vconvRESOLUTION);
X }
X k = NoSignExtend(dvifp, 1);
X GetBytes(dvifp, n, k);
X
X PassNo = 0;
X spagep = ftell(dvifp);
X tpagep = 0;
X total_font_data = 0;
X nxfonts = 0;
X curxfont = 0;
X loadpass = 1;
X EMIT(outfp,"%c+F\n",ESC);
X
X while (TRUE)
X
X switch (command=NoSignExtend(dvifp, 1)) {
X
X case SET1:case SET2:case SET3:case SET4:
X val = NoSignExtend(dvifp, command-SET1+1);
X if (!SkipMode) SetChar(val, command, PassNo);
X break;
X
X case SET_RULE:
X val = NoSignExtend(dvifp, 4);
X val2 = NoSignExtend(dvifp, 4);
X if (Emitting) SetRule(val, val2, 1);
X break;
X
X case PUT1:case PUT2:case PUT3:case PUT4:
X val = NoSignExtend(dvifp,command-PUT1+1);
X if (!SkipMode) SetChar(val, command, PassNo);
X break;
X
X case PUT_RULE:
X val = NoSignExtend(dvifp, 4);
X val2 = NoSignExtend(dvifp, 4);
X if (Emitting) SetRule(val, val2, 0);
X break;
X
X case NOP:
X break;
X
X case BOP:
X cpagep = ftell(dvifp) - 1;
X for (i=0; i<=9; i++)
X count[i] = NoSignExtend(dvifp, 4);
X ppagep = NoSignExtend(dvifp, 4);
X
X h = v = w = x = y = z = 0;
X hh = vv = -9999;
X sp = 0;
X fontptr = NULL;
X prevfont = NULL;
X
X if( count[0] < FirstPage || count[0] > LastPage )
X SkipMode = TRUE;
X else
X SkipMode = FALSE;
X
X if( !SkipMode ) {
X if( PassNo == 0) {
X#ifdef STATS
X if( Stats ) {
X Sndc0 = Sndc;
X Stnc0 = Stnc;
X Snbpx0 = Snbpxl;
X }
X#endif
X if( !G_quiet ) {
X (void) fprintf(stderr, "[%d", count[0] );
X (void) fflush(stderr);
X }
X }
X else if (cpagep == tpagep) { /* end of section */
X PassNo = 0;
X spagep = cpagep; /* start of next section */
X for (i = 0; i < MAXFONTID; i++)
X assigned_font[i] = NULL;
X total_font_data = 0;
X nxfonts = 0;
X curxfont = 0;
X loadpass++;
X EMIT(outfp,"%c+F\n",ESC);
X }
X }
X
X Emitting = (PassNo != 0) && !SkipMode;
X
X break;
X
X case EOP:
X if (Complex) { /* we've had to abandon font processing */
X if (spagep == cpagep) { /* start of section is this page ! */
X Fatal("Page too complex");
X }
X Complex = 0;
X tpagep = cpagep;
X (void) fseek(dvifp, spagep, 0);
X SkipMode = 0;
X PassNo = 1;
X FlushXFont(curxfont);
X curxfont = NULL;
X EMIT(outfp,"%c+P\n", ESC);
X /* set up font now, in case first command isn't a char */
X SetXFont(headxfont);
X }
X if( !SkipMode ) {
X if (PassNo == 1) { /* end of page processing in second pass */
X EMIT(outfp,"%c",FF);
X hh = vv = -9999;
X#ifdef STATS
X if( Stats )
X (void) fprintf(stderr," - %d total ch, %d diff ch, %d pxl bytes]\n",
X Stnc-Stnc0, Sndc-Sndc0, Snbpxl-Snbpx0);
X else
X#endif
X if( !G_quiet ) {
X (void) fprintf(stderr,"] ");
X if( (++ndone % 10) == 0 )
X (void) fprintf(stderr,"\n");
X (void) fflush(stderr);
X }
X }
X }
X break;
X
X case PUSH:
X if (sp >= STACKSIZE)
X Fatal("stack overflow");
X stack[sp].h = h;
X stack[sp].v = v;
X stack[sp].w = w;
X stack[sp].x = x;
X stack[sp].y = y;
X stack[sp].z = z;
X sp++;
X break;
X
X case POP:
X --sp;
X if (sp < 0)
X Fatal("stack underflow");
X h = stack[sp].h;
X v = stack[sp].v;
X w = stack[sp].w;
X x = stack[sp].x;
X y = stack[sp].y;
X z = stack[sp].z;
X break;
X
X case RIGHT1:case RIGHT2:case RIGHT3:case RIGHT4:
X val = SignExtend(dvifp,command-RIGHT1+1);
X if (Emitting) MoveOver(val);
X break;
X
X case W0:
X if (Emitting) MoveOver(w);
X break;
X
X case W1:case W2:case W3:case W4:
X w = SignExtend(dvifp,command-W1+1);
X if (Emitting) MoveOver(w);
X break;
X
X case X0:
X if (Emitting) MoveOver(x);
X break;
X
X case X1:case X2:case X3:case X4:
X x = SignExtend(dvifp,command-X1+1);
X if (Emitting) MoveOver(x);
X break;
X
X case DOWN1:case DOWN2:case DOWN3:case DOWN4:
X val = SignExtend(dvifp,command-DOWN1+1);
X if (Emitting) MoveDown(val);
X break;
X
X case Y0:
X if (Emitting) MoveDown(y);
X break;
X
X case Y1:case Y2:case Y3:case Y4:
X y = SignExtend(dvifp,command-Y1+1);
X if (Emitting) MoveDown(y);
X break;
X
X case Z0:
X if (Emitting) MoveDown(z);
X break;
X
X case Z1:case Z2:case Z3:case Z4:
X z = SignExtend(dvifp,command-Z1+1);
X if (Emitting) MoveDown(z);
X break;
X
X case FNT1:case FNT2:case FNT3:case FNT4:
X if (!SkipMode) {
X SetFntNum(NoSignExtend(dvifp,command-FNT1+1));
X }
X break;
X
X case XXX1:case XXX2:case XXX3:case XXX4:
X k = NoSignExtend(dvifp,command-XXX1+1);
X GetBytes(dvifp, SpecialStr, k);
X if(Emitting) DoSpecial(SpecialStr, k);
X break;
X
X case FNT_DEF1:case FNT_DEF2:case FNT_DEF3:case FNT_DEF4:
X k = NoSignExtend(dvifp, command-FNT_DEF1+1);
X if (PreLoad || HasBeenRead(k) )
X {
X SkipFontDef (k);
X }
X else
X {
X ReadFontDef (k);
X }
X break;
X
X case PRE:
X Fatal("PRE occurs within file");
X break;
X
X case POST:
X if (PassNo == 0) {
X tpagep = 0;
X (void) fseek(dvifp, spagep, 0);
X PassNo = 1;
X FlushXFont(curxfont);
X curxfont = NULL;
X EMIT(outfp,"%c+P\n", ESC);
X /* set up font now, in case first command isn't a char */
X SetXFont(headxfont);
X }
X else
X AllDone();
X break;
X
X case POST_POST:
X Fatal("POST_POST with no preceding POST");
X break;
X
X default:
X if (command >= FONT_00 && command <= FONT_63)
X {if (!SkipMode)
X SetFntNum(command - FONT_00);}
X else if (command >= SETC_000 && command <= SETC_127)
X {if (!SkipMode) SetChar(command, command, PassNo);}
X else
X Fatal("%d is an undefined command", command);
X break;
X
X }
X
X}
X
X/*-->AbortRun*/
X/**********************************************************************/
X/*************************** AbortRun *******************************/
X/**********************************************************************/
X
Xvoid
XAbortRun(code)
Xint code;
X{
X exit(code);
X}
X
X
X/*-->ActualFactor*/
X/**********************************************************************/
X/************************** ActualFactor ****************************/
X/**********************************************************************/
X
Xfloat /* compute the actual size factor given the approximation */
XActualFactor(unmodsize)
Xint unmodsize; /* actually factor * 1000 */
X{
X float realsize; /* the actual magnification factor */
X
X realsize = (float)unmodsize / 1000.0;
X /* a real hack to correct for rounding in some cases--rkf */
X if(unmodsize==1095) realsize = 1.095445; /*stephalf*/
X else if(unmodsize==1315) realsize=1.314534; /*stepihalf*/
X else if(unmodsize==1577) realsize=1.577441; /*stepiihalf*/
X else if(unmodsize==1893) realsize=1.892929; /*stepiiihalf*/
X else if(unmodsize==2074) realsize=2.0736; /*stepiv*/
X else if(unmodsize==2488) realsize=2.48832; /*stepv*/
X else if(unmodsize==2986) realsize=2.985984; /*stepiv*/
X /* the remaining magnification steps are represented with sufficient
X accuracy already */
X return(realsize);
X}
X
X
X/*-->AllDone*/
X/**********************************************************************/
X/****************************** AllDone ******************************/
X/**********************************************************************/
X
Xvoid
XAllDone()
X{
X int t;
X struct font_entry *p;
X
X EMIT(outfp,"%c+X\n",ESC);
X /* just in case the exit code wants to open a file (profiling) ... */
X (void) fclose(dvifp);
X if( !G_quiet )
X (void) fprintf(stderr,"\n");
X
X#ifdef CREOPT
X if( G_create ) {
X (void) fclose(outfp);
X if( !G_quiet )
X (void) fprintf(stderr, "Output written on \"%s\"\n", outfname );
X }
X#endif CREOPT
X
X if (G_errenc && G_logging == 1 && G_logfile) {
X (void) fseek(G_logfp, (long)0, 0);
X while ((t=getc(G_logfp)) != EOF)
X (void) putchar(t);
X }
X if (G_logging == 1 && G_logfile)
X (void) printf("Log file created\n");
X
X#ifdef STATS
X if (Stats) {
X (void) fprintf( stderr, "Total chars diff chars pxl bytes\n" );
X (void) fprintf( stderr, " # %% # %% # %%\n" );
X (void) fprintf( stderr, "------- --- ------ --- ----- ---\n" );
X for( p=hfontptr; p!=NULL; p=p->next ) {
X (void) fprintf( stderr, "%7d%4d", p->ncts, (100*p->ncts + Stnc/2)/Stnc );
X (void) fprintf( stderr, "%9d%4d", p->ncdl, (100*p->ncdl + Sndc/2)/Sndc );
X (void) fprintf( stderr, "%8d%4d", p->nbpxl, (100*p->nbpxl + Snbpxl/2)/Snbpxl );
X }
X (void) fprintf(stderr, "\nTotal number of characters typeset: %d\n", Stnc);
X (void) fprintf(stderr, "Number of different characters downloaded: %d\n", Sndc);
X (void) fprintf(stderr, "Number of bytes of pxl data downloaded: %d\n", Snbpxl);
X (void) fprintf(stderr, "Optimal # of bytes of pxl data: %d\n", Sonbpx);
X }
X#endif
X
X AbortRun(G_errenc);
X}
X
X
X/*-->CopyFile*/ /* copy a file straight through to output */
X/*********************************************************************/
X/***************************** CopyFile ******************************/
X/*********************************************************************/
X
X#ifdef notdef
Xvoid
XCopyFile( str )
Xchar *str;
X{
X FILE *spfp;
X int t;
X
X if( (spfp=fopen(str,"r")) == NULL ) {
X (void) fprintf(stderr,"Unable to open file %s\n", str );
X return;
X }
X if( !G_quiet )
X (void) fprintf(stderr," [%s", str);
X while( (t = getc(spfp)) != EOF ) {
X EMITC(t);
X }
X (void) fclose(spfp);
X if( !G_quiet )
X (void) fprintf(stderr,"]");
X}
X#endif
X
X/*-->DecodeArgs*/
X/*********************************************************************/
X/***************************** DecodeArgs ****************************/
X/*********************************************************************/
X
Xvoid
XDecodeArgs( argc, argv )
Xint argc;
Xchar *argv[];
X{
X int argind; /* argument index for flags */
X char curarea[STRSIZE]; /* current file area */
X char curname[STRSIZE]; /* current file name */
X char *tcp, *tcp1; /* temporary character pointers */
X
X argind = 1;
X while (argind < argc) {
X tcp = argv[argind];
X if (*tcp == '-')
X switch(isupper(*++tcp) ? (*tcp-'A')+'a' : *tcp) {
X
X case 'a': /* a selects different pxl font area */
X PXLpath = argv[++argind];
X break;
X#ifdef CREOPT
X case 'c': /* create an output file in spool area */
X G_create = TRUE;
X break;
X#endif CREOPT
X#ifdef DEBUG
X case 'd': /* d selects Debug output */
X Debug = TRUE;
X break;
X#endif
X case 'f': /* next arg is starting pagenumber */
X if( ++argind >= argc || sscanf(argv[argind], "%d", &FirstPage) != 1 )
X Fatal("Argument is not a valid integer\n", 0);
X break;
X
X case 'l': /* l prohibits logging of errors */
X G_logging = -1;
X break;
X#ifdef USEGLOBALMAG
X case 'm': /* specify magnification to use */
X switch( tolower(*++tcp) ) {
X
X case '\0': /* next arg is a magnification to use */
X if( ++argind >= argc || sscanf(argv[argind], "%d", &usermag) != 1 )
X Fatal("Argument is not a valid integer\n", 0);
X break;
X case '0': usermag = 1000; break;
X case 'h': usermag = 1095; break;
X case '1': usermag = 1200; break;
X case '2': usermag = 1440; break;
X case '3': usermag = 1728; break;
X case '4': usermag = 2074; break;
X case '5': usermag = 2488; break;
X default: Fatal("%c is a bad mag step\n", *tcp);
X }
X break;
X#endif
X
X case 'p': /* p prohibits pre-font loading */
X PreLoad = 0;
X break;
X
X case 'q': /* quiet operation */
X G_quiet = TRUE;
X break;
X#ifdef STATS
X case 's': /* print some statistics */
X Stats = TRUE;
X break;
X#endif
X case 't': /* next arg is ending pagenumber */
X if( ++argind >= argc || sscanf(argv[argind], "%d", &LastPage) != 1 )
X Fatal("Argument is not a valid integer\n", 0);
X break;
X
X case 'w': /* don't print out warnings */
X G_nowarn = TRUE;
X break;
X
X default:
X (void) printf("%c is not a legal flag\n", *tcp);
X }
X
X else {
X
X tcp = rindex(argv[argind], '/'); /* split into directory + file name */
X if (tcp == NULL) {
X curarea[0] = '\0';
X tcp = argv[argind];
X }
X else {
X (void) strcpy(curarea, argv[argind]);
X curarea[tcp-argv[argind]+1] = '\0';
X tcp += 1;
X }
X
X (void) strcpy(curname, tcp);
X tcp1 = rindex(tcp, '.'); /* split into file name + extension */
X if (tcp1 == NULL) {
X (void) strcpy(rootname, curname);
X (void) strcat(curname, ".dvi");
X }
X else {
X *tcp1 = '\0';
X (void) strcpy(rootname, curname);
X *tcp1 = '.';
X }
X
X (void) strcpy(filename, curarea);
X (void) strcat(filename, curname);
X
X if ((dvifp=BINARYOPEN(filename,"r")) == NULL) {
X (void) fprintf(stderr,"\n");
X (void) fprintf(stderr,"%s: can't find DVI file \"%s\"\n\n", G_progname, filename);
X AbortRun(1);
X }
X
X (void) strcpy(G_Logname, curname);
X (void) strcat(G_Logname, ".log");
X }
X argind++;
X }
X
X if (dvifp == NULL) {
X (void) fprintf(stderr,
X "\nusage: %s [-a area] [-c] [-h] [-o option] [-p] [-s] [-r] [-f n] [-t n] [-m{0|h|1|2|3|4| mag] [-a fontarea] dvifile\n\n",
X G_progname);
X AbortRun(1);
X }
X}
X
X
X/*-->DoConv*/
X/*********************************************************************/
X/******************************** DoConv ***************************/
X/*********************************************************************/
X
Xint DoConv(num, den, convResolution)
X{
X register float conv;
X conv = ((float)num/(float)den) *
X#ifdef USEGLOBALMAG
X/* ActualFactor(mag) * why was this in as Actual Factor? jls */
X ((float) mag/1000.0) *
X#endif
X ((float)convResolution/254000.0);
X return((int) (1.0 / conv + 0.5));
X}
X
X
X/*-->DoSpecial*/
X/*********************************************************************/
X/***************************** DoSpecial ***************************/
X/*********************************************************************/
X#ifdef notdef
Xtypedef enum {None, String, Integer, Number, Dimension} ValTyp;
X
Xtypedef struct {
X char *Key; /* the keyword string */
X char *Val; /* the value string */
X ValTyp vt; /* the value type */
X union { /* the decoded value */
X int i;
X float n;
X } v;
X } KeyWord;
X
Xtypedef struct {
X char *Entry;
X ValTyp Type;
X } KeyDesc;
X
X#define PSFILE 0
XKeyDesc KeyTab[] = {{"psfile", String},
X {"hsize", Dimension},
X {"vsize", Dimension},
X {"hoffset", Dimension},
X {"voffset", Dimension},
X {"hscale", Number},
X {"vscale", Number}};
X
X#define NKEYS (sizeof(KeyTab)/sizeof(KeyTab[0]))
X#endif
Xvoid
XDoSpecial( str, n ) /* interpret a \special command, made up of keyword=value pairs */
Xchar *str;
Xint n;
X{
X#ifdef notdef /* don't do anything for now */
X char spbuf[STRSIZE];
X char *sf = NULL;
X KeyWord k;
X int i;
X
X str[n] = '\0';
X spbuf[0] = '\0';
X
X SetPosn(h, v, 0);
X EMITS("@beginspecial\n");
X
X while( (str=GetKeyStr(str,&k)) != NULL ) { /* get all keyword-value pairs */
X /* for compatibility, single words are taken as file names */
X if( k.vt == None && access(k.Key,0) == 0) {
X if( sf ) Warning(" More than one \\special file name given. %s ignored", sf );
X (void) strcpy(spbuf, k.Key);
X sf = spbuf;
X }
X else if( GetKeyVal( &k, KeyTab, NKEYS, &i ) && i != -1 ) {
X if( i == PSFILE ) {
X if( sf ) Warning(" More than one \\special file name given. %s ignored", sf );
X (void) strcpy(spbuf, k.Val);
X sf = spbuf;
X }
X else /* the keywords are simply output as PS procedure calls */
X EMIT(outfp, "%f @%s\n", k.v.n, KeyTab[i].Entry);
X }
X else Warning(" Invalid keyword or value in \\special - \"%s\" ignored", k.Key );
X }
X
X EMITS("@setspecial\n");
X
X if( sf )
X CopyFile( sf );
X else
X Warning(" No special file name provided.");
X
X EMITS("@endspecial\n");
X#endif notdef
X}
X
X
X/*-->EmitChar*/
X/**********************************************************************/
X/**************************** EmitChar ******************************/
X/**********************************************************************/
X/* The 2700 doesn't seem to have much idea about x-offsets, so for negative
X * offsets pad out the bit map with space, and for positive offsets supply
X * the offset to SetPosn as an extra parameter.
X */
X
X
Xvoid
XEmitChar(ce) /* output a character bitmap */
X struct char_entry *ce;
X{
X int nbpl, nwpl;
X int xbytes_per_row;
X int bytes_needed;
X unsigned char *pattern;
X register int i, j, bit_n;
X register char *sl;
X struct xchardesc *cur_lut;
X
X /* check there's room in the pattern table */
X xbytes_per_row = (ce->height + 7) / 8;
X if (xbytes_per_row < 2) xbytes_per_row = 2;
X bytes_needed = xbytes_per_row * ce->width;
X if (ce->xOffset < 0)
X bytes_needed += - xbytes_per_row * ce->xOffset;
X if (bytes_needed + next_free > MAX_PAT) {
X FlushXFont(curxfont);
X curxfont = 0;
X }
X
X if (curxfont == 0) {
X if (nxfonts > MAX_LDFONTS) {
X /* too many fonts in this section */
X Complex++;
X SkipMode++;
X Emitting = 0;
X return;
X }
X curxfont = (struct xfont *) malloc(sizeof(struct xfont));
X /*
X * initialize first characters in every font to be spaces
X * to use for quick, small moves. It seems character 32 is not
X * usable, and ought to be a standard space.
X */
X cur_lut = &lut_tab[MINCH];
X *cur_lut = space_glyph;
X cur_lut->width = 18;
X *++cur_lut = space_glyph;
X cur_lut->width = 1;
X *++cur_lut = space_glyph;
X cur_lut->width = 2;
X bzero(&patt_tab[0], 2);
X next_free = 2;
X curxfont->glyph = MINCH+3;
X /* make sure the 2700 name is unique, in case this is a clever version
X * that only loads fonts it doesn't already have (3700?) */
X (void) sprintf(curxfont->xname, "dvi%u-%d-%d",
X getpid(), loadpass, nxfonts++);
X curxfont->next = headxfont;
X headxfont = curxfont;
X /* header, qual table, lut entry for 3 spaces, 2 byte pattern */
X total_font_data += sizeof(struct xheader)
X + 256*sizeof(qual_tab[0])
X + 3*sizeof(lut_tab[0])
X + 2;
X }
X
X total_font_data += sizeof(lut_tab[0]) + bytes_needed;
X if (total_font_data > MAX_FONT_DATA) {
X /* too much font data in this section */
X Complex++;
X SkipMode++;
X Emitting = 0;
X return;
X }
X
X /* set up lookup table entry - loc will be adjusted later */
X cur_lut = &lut_tab[curxfont->glyph];
X cur_lut->lo_loc = htoxs(next_free & 0xffff);
X cur_lut->hi_loc = next_free >> 16;
X /* don't use PixRound for this - we'd rather adjust to the right */
X cur_lut->width = ce->tfmw / hconv;
X cur_lut->orgy = (ce->yOffset - ((int)ce->height) - 1) / 2;
X cur_lut->blocking = 63 - xbytes_per_row;
X cur_lut->nbyte = htoxs(bytes_needed);
X
X pattern = (unsigned char *) &patt_tab[next_free];
X bzero((char *)pattern, bytes_needed);
X /* for negative xOffset, add white space to pattern */
X if (ce->xOffset < 0)
X pattern += - xbytes_per_row * ce->xOffset;
X#ifdef notdef
X if (ce->xOffset > 0) fprintf(stderr, "xOffset: %d\n", ce->xOffset);
X#endif
X /* for positive xOffset, adjust position before setting position, and
X * compensate by increasing width of character */
X if (ce->xOffset > 0) {
X ce->kern = ce->xOffset;
X cur_lut->width += ce->xOffset;
X }
X ce->realw = cur_lut->width * hconv;
X#ifdef notdef
X if (ce->xOffset > 0) {
X fprintf(stderr, "Incoming map: \n");
X printpixelmap((char *)ce->where.address.pixptr, nwpl*4, ce->height);
X }
X#endif
X /* convert raster from PK or PXL to 2700 (rows and columns reversed) */
X /* this is all a bit cryptic I'm afraid */
X if (fontptr->type == FONT_PXL) {
X /* this is a PXL font, just reverse rows and columns */
X nbpl = (ce->width + 7) >> 3;
X nwpl = (ce->width + 31) >> 5;
X for (i = 0; i < ce->height; i++) {
X sl = (char *)(ce->where.address.pixptr + (ce->height-1-i)*nwpl);
X for (j = 0; j < nbpl; j++, sl++) {
X for (bit_n = 7; bit_n >= 0; bit_n--) {
X if ((*sl >> bit_n) & 1)
X pattern[xbytes_per_row * ((j << 3) + (7 - bit_n))
X + (i >> 3)] |= 1 << (7 - (i & 07));
X }
X }
X }
X }
X else { /* PK font */
X /* this code is basically from PKTOPXL, modified to swap rows & cols */
X if (ce->flag.dyn_f == 14) { /* bitwise raster image */
X bit_n = 0;
X for (i = ce->height-1; i >= 0; i--) {
X for (j = 0; j < ce->width; j++) {
X if (((char *)ce->where.address.pixptr)[bit_n >> 3] &
X (1 << (7 - (bit_n & 07))))
X pattern[xbytes_per_row * j + (i >> 3)] |=
X 1 << (7 - (i & 07));
X bit_n++;
X }
X }
X }
X else { /* compressed raster */
X unsigned char *pp;
X int nybble = 0, repeat = 0;
X int turning_on = ce->flag.turn_on;
X int row, count;
X bit_n = 0;
X
X pp = (unsigned char *)ce->where.address.pixptr;
X for (row = ce->height - 1; row >= 0; ) {
X count = PKPackedNum(&pp, &nybble, ce->flag.dyn_f, &repeat);
X#ifdef notdef
X fprintf(stderr,
X "(row %d) turn_on = %d, count = %d, repeat = %d\n",
X row, turning_on, count, repeat);
X#endif
X while (count > 0) {
X while (bit_n < ce->width && count > 0) {
X if (turning_on)
X pattern[xbytes_per_row * bit_n + (row >> 3)] |=
X 1 << (7 - (row & 07));
X count--;
X bit_n++;
X }
X if (bit_n == ce->width) {
X for (bit_n = 0; bit_n < ce->width; bit_n++) {
X if (pattern[xbytes_per_row * bit_n + (row >> 3)] &
X (1 << (7 - (row & 07)))) {
X for (i = 1; i <= repeat; i++) {
X pattern[xbytes_per_row * bit_n +
X ((row-i) >> 3)] |=
X 1 << (7 - ((row-i) & 07));
X }
X }
X }
X row -= repeat + 1;
X bit_n = 0;
X repeat = 0;
X }
X }
X turning_on = !turning_on;
X }
X }
X }
X#ifdef notdef
X if (ce->xOffset > 0) {
X fprintf(stderr, "Outgoing map: \n");
X printpixelmap(&patt_tab[next_free], xbytes_per_row,
X bytes_needed/xbytes_per_row);
X }
X#endif
X next_free += (bytes_needed + 1) & ~1; /* start on 16-bit boundary */
X
X ce->where.xfont = curxfont;
X ce->where.glyph = curxfont->glyph;
X
X if (++curxfont->glyph == DEL) { /* DEL ignored by printer */
X curxfont->glyph++;
X }
X if (curxfont->glyph > MAXCH) {
X FlushXFont(curxfont);
X curxfont = 0;
X }
X
X#ifdef STATS
X Snbpxl += nbpl*ce->height;
X fontptr->nbpxl += nbpl*ce->height;
X Sonbpx += (ce->width*ce->height + 7) >> 3;
X Sndc += 1;
X#endif
X}
X
X#ifdef notdef
Xprintpixelmap(map, row, lines)
X unsigned char *map;
X int row, lines;
X{
X register int i, j, k;
X int c;
X
X for (i = 0; i < lines; i++) {
X for (j = 0; j < row; j++) {
X c = map[i * row + j];
X for (k = 7; k >= 0; k--) {
X if (c & (1 << k))
X putc('*', stderr);
X else
X putc(' ', stderr);
X }
X }
X putc('\n', stderr);
X }
X}
X#endif
X
Xstatic long encode_buf = 0;
Xstatic int encode_count = 0;
X
Xvoid
XFlushXFont(xfont)
X struct xfont *xfont;
X{
X long patt_offset, remainder, patt_length, font_length, new_loc;
X int trail_length, i, cid;
X
X if (xfont == 0)
X return;
X /* first construct header */
X xheader.magic = 0xaaaa;
X xheader.rev = 1;
X xheader.flags = PORTRAIT|PROP_SP;
X /* don't want font name null terminated */
X for (i = 0; i < 20; i++)
X xheader.fname[i] = ' ';
X (void) strncpy(xheader.fname, xfont->xname, strlen(xfont->xname));
X xheader.lowchar = MINCH;
X xheader.highchar = xfont->glyph - 1;
X /* offset into font of pattern table */
X patt_offset = sizeof(struct xheader) + 256 +
X sizeof(struct xchardesc) * (xfont->glyph - MINCH);
X /* this is a rather empirical calculation of how many trailing 0x55
X * bytes are needed, found by looking through several fonts */
X remainder = (next_free + patt_offset) % 6;
X trail_length = 3*((remainder + 3)/4) + 9 - remainder;
X for (i = 0; i < trail_length; i++)
X patt_tab[next_free++] = 0x55;
X patt_length = next_free;
X font_length = patt_length + patt_offset;
X xheader.lo_length = htoxs(font_length & 0xffff);
X xheader.hi_length = font_length >> 16;
X if (xheader.hi_length)
X xheader.flags |= LONG_FONT;
X /* initialize encoding routine, and output header and (unused) qual tab */
X encode_buf = 0;
X encode_count = 0;
X Encode((unsigned char *)&xheader, sizeof(struct xheader));
X Encode((unsigned char *)qual_tab, 256*sizeof(qual_tab[0]));
X /* update offsets into font */
X for (cid = xheader.lowchar; cid <= xheader.highchar; cid++) {
X new_loc = xtohs(lut_tab[cid].lo_loc) +
X (lut_tab[cid].hi_loc << 16) + patt_offset;
X lut_tab[cid].lo_loc = htoxs(new_loc & 0xffff);
X lut_tab[cid].hi_loc = new_loc >> 16;
X }
X /* output lookup table and pattern area */
X Encode((unsigned char *)&lut_tab[xheader.lowchar],
X sizeof(struct xchardesc)*(xheader.highchar-xheader.lowchar+1));
X Encode((unsigned char *)patt_tab, patt_length);
X /* flush encode_buf */
X new_loc = 0;
X Encode((unsigned char *)&new_loc, 2);
X}
X
X/*
X * encode font data for the 2700. Each 6 bits of font data is converted into
X * an ASCII character from '?' to '~'. Three bytes of input form 4 bytes of
X * output.
X */
Xvoid
XEncode(p, len)
X register unsigned char *p;
X int len;
X{
X register int i;
X
X while (1) {
X for ( ; len > 0 && encode_count < 3; len--, encode_count++)
X encode_buf = (encode_buf << 8) + *p++;
X if (len <= 0)
X return;
X for (i = 18; i >= 0; i -= 6) {
X EMITC(((encode_buf >> i) & 077) + '?');
X }
X encode_count = 0;
X encode_buf = 0;
X }
X}
X
Xint
XPKPackedNum(p, b, dynf, repeat_count)
X unsigned char **p;
X int *b;
X int dynf;
X int *repeat_count;
X{
X int i, j;
X
X i = GetNyb(p, b);
X if (i == 0) {
X do {
X i++;
X } while ((j = GetNyb(p, b)) == 0);
X for ( ; i > 0; i--)
X j = (j << 4) + GetNyb(p, b);
X return (j - 15 + (13 - dynf)*16 + dynf);
X }
X else if (i <= dynf)
X return i;
X else if (i < 14)
X return (i - dynf - 1)*16 + GetNyb(p, b) + dynf + 1;
X else {
X *repeat_count = (i == 14) ? PKPackedNum(p, b, dynf, repeat_count) : 1;
X return PKPackedNum(p, b, dynf, repeat_count);
X }
X}
X
Xint
XGetNyb(p, b)
X unsigned char **p;
X int *b;
X{
X if (*b) {
X *b = 0;
X return (*(*p)++ & 0xf);
X }
X else {
X *b = 1;
X return (**p >> 4);
X }
X}
X
X/*-->Fatal*/
X/**********************************************************************/
X/****************************** Fatal *******************************/
X/**********************************************************************/
X/*VARARGS1*/
X
Xvoid
XFatal(fmt, a, b, c)/* issue a fatal error message */
Xchar *fmt; /* format */
Xchar *a, *b, *c; /* arguments */
X
X{
X if (G_logging == 1 && G_logfile)
X {
X (void) fprintf(G_logfp, "%s: FATAL--", G_progname);
X (void) fprintf(G_logfp, fmt, a, b, c);
X (void) fprintf(G_logfp, "\n");
X }
X
X (void) fprintf(stderr,"\n");
X (void) fprintf(stderr, "%s: FATAL--", G_progname);
X (void) fprintf(stderr, fmt, a, b, c);
X (void) fprintf(stderr, "\n\n");
X if (G_logging == 1)
X (void) printf("Log file created\n");
X#ifdef CREOPT
X if (G_create && outfp != NULL) {
X (void) fclose(outfp);
X unlink(outfname);
X }
X#endif CREOPT
X AbortRun(1);
X}
X
X
X/*-->FindPostAmblePtr*/
X/**********************************************************************/
X/************************ FindPostAmblePtr **************************/
X/**********************************************************************/
X
Xvoid
XFindPostAmblePtr(postambleptr)
Xlong *postambleptr;
X
X/* this routine will move to the end of the file and find the start
X of the postamble */
X
X{
X int i;
X
X (void) fseek (dvifp, (long) 0, 2); /* goto end of file */
X *postambleptr = ftell (dvifp) - 4;
X (void) fseek (dvifp, *postambleptr, 0);
X
X while (TRUE) {
X (void) fseek (dvifp, --(*postambleptr), 0);
X if (((i = NoSignExtend(dvifp, 1)) != 223) &&
X (i != DVIFORMAT))
X Fatal ("Bad end of DVI file");
X if (i == DVIFORMAT)
X break;
X }
X (void) fseek (dvifp, (long) ((*postambleptr) - 4), 0);
X (*postambleptr) = NoSignExtend(dvifp, 4);
X (void) fseek (dvifp, *postambleptr, 0);
X}
X
X
X/*-->GetBytes*/
X/**********************************************************************/
X/***************************** GetBytes *****************************/
X/**********************************************************************/
X
Xvoid
XGetBytes(fp, cp, n) /* get n bytes from file fp */
Xregister FILE *fp; /* file pointer */
Xregister char *cp; /* character pointer */
Xregister int n; /* number of bytes */
X
X{
X while (n--)
X *cp++ = NoSignExtend(fp, 1);
X}
X
X
X/*-->GetFontDef*/
X/**********************************************************************/
X/**************************** GetFontDef *****************************/
X/**********************************************************************/
X
Xvoid
XGetFontDef()
X
X/***********************************************************************
X Read the font definitions as they are in the postamble of the DVI
X file.
X***********************************************************************/
X
X{
X unsigned char byte;
X
X while (((byte = NoSignExtend(dvifp, 1)) >= FNT_DEF1) &&
X (byte <= FNT_DEF4)) {
X switch (byte) {
X case FNT_DEF1:
X ReadFontDef (NoSignExtend(dvifp, 1));
X break;
X case FNT_DEF2:
X ReadFontDef (NoSignExtend(dvifp, 2));
X break;
X case FNT_DEF3:
X ReadFontDef (NoSignExtend(dvifp, 3));
X break;
X case FNT_DEF4:
X ReadFontDef (NoSignExtend(dvifp, 4));
X break;
X default:
X Fatal ("Bad byte value in font defs");
X break;
X }
X }
X if (byte != POST_POST)
X Fatal ("POST_POST missing after fontdefs");
X}
X
X
X/*-->GetKeyStr*/
X/**********************************************************************/
X/***************************** GetKeyStr ****************************/
X/**********************************************************************/
X
X /* extract first keyword-value pair from string (value part may be null)
X * return pointer to remainder of string
X * return NULL if none found
X */
X#ifdef notdef
Xchar KeyStr[STRSIZE];
Xchar ValStr[STRSIZE];
X
Xchar *GetKeyStr( str, kw )
Xchar *str;
XKeyWord *kw;
X{
X char *s, *k, *v, t;
X
X if( !str ) return( NULL );
X
X for( s=str; *s == ' '; s++ ) ; /* skip over blanks */
X if( *s == '\0' ) return( NULL );
X
X for( k=KeyStr; /* extract keyword portion */
X *s != ' ' && *s != '\0' && *s != '=';
X *k++ = *s++ ) ;
X *k = '\0';
X kw->Key = KeyStr;
X kw->Val = v = NULL;
X kw->vt = None;
X
X for( ; *s == ' '; s++ ) ; /* skip over blanks */
X if( *s != '=' ) /* look for "=" */
X return( s );
X
X for( s++ ; *s == ' '; s++ ) ; /* skip over blanks */
X if( *s == '\'' || *s == '\"' ) /* get string delimiter */
X t = *s++;
X else
X t = ' ';
X for( v=ValStr; /* copy value portion up to delim */
X *s != t && *s != '\0';
X *v++ = *s++ ) ;
X if( t != ' ' && *s == t ) s++;
X *v = '\0';
X kw->Val = ValStr;
X kw->vt = String;
X
X return( s );
X}
X
X
X/*-->GetKeyVal*/
X/**********************************************************************/
X/***************************** GetKeyVal ****************************/
X/**********************************************************************/
X
X /* get next keyword-value pair
X * decode value according to table entry
X */
X
Xint GetKeyVal( kw, tab, nt, tno)
XKeyWord *kw;
XKeyDesc tab[];
Xint nt;
Xint *tno;
X{
X int i;
X char c = '\0';
X
X *tno = -1;
X
X for(i=0; i<nt; i++)
X if( IsSame(kw->Key, tab[i].Entry) ) {
X *tno = i;
X switch( tab[i].Type ) {
X case None:
X if( kw->vt != None ) return( FALSE );
X break;
X case String:
X if( kw->vt != String ) return( FALSE );
X break;
X case Integer:
X if( kw->vt != String ) return( FALSE );
X if( sscanf(kw->Val,"%d%c", &(kw->v.i), &c) != 1
X || c != '\0' ) return( FALSE );
X break;
X case Number:
X case Dimension:
X if( kw->vt != String ) return( FALSE );
X if( sscanf(kw->Val,"%f%c", &(kw->v.n), &c) != 1
X || c != '\0' ) return( FALSE );
X break;
X }
X kw->vt = tab[i].Type;
X return( TRUE );
X }
X
X return( TRUE );
X}
X#endif
X
X/*-->HasBeenRead*/
X/**********************************************************************/
X/*************************** HasBeenRead ****************************/
X/**********************************************************************/
X
Xint
XHasBeenRead(k)
Xint k;
X{
X struct font_entry *ptr;
X
X ptr = hfontptr;
X while ((ptr!=NULL) && (ptr->k!=k))
X ptr = ptr->next;
X return( ptr != NULL );
X}
X
X
X/*-->IsSame*/
X/**********************************************************************/
X/******************************* IsSame *****************************/
X/**********************************************************************/
X
Xint IsSame(a, b) /* compare strings, ignore case */
Xchar *a, *b;
X{
X for( ; *a != '\0'; )
X if( tolower(*a++) != tolower(*b++) ) return( FALSE );
X return( *a == *b ? TRUE : FALSE );
X}
X
X
X/*-->lcase*/
X/**********************************************************************/
X/**************************** lcase *********************************/
X/**********************************************************************/
X
Xvoid lcase(s)
Xchar *s;
X{
X char *t;
X for(t=s; *t != '\0'; t++)
X *t = tolower(*t);
X return;
X}
X
X
X/*-->MoveDown*/
X/**********************************************************************/
X/**************************** MoveDown ******************************/
X/**********************************************************************/
X
Xvoid
XMoveDown(a)
Xint a;
X{
X v += a;
X}
X
X
X/*-->MoveOver*/
X/**********************************************************************/
X/**************************** MoveOver ******************************/
X/**********************************************************************/
X
Xvoid
XMoveOver(b)
Xint b;
X{
X h += b;
X}
X
X
X/*-->NoSignExtend*/
X/**********************************************************************/
X/*************************** NoSignExtend ***************************/
X/**********************************************************************/
X
Xint
XNoSignExtend(fp, n) /* return n byte quantity from file fd */
Xregister FILE *fp; /* file pointer */
Xregister int n; /* number of bytes */
X
X{
X register int x; /* number being constructed */
X
X x = getc(fp);
X while (--n) {
X x <<= 8;
X x |= getc(fp);
X }
X return(x);
X}
X
X
X/*-->OpenFontFile*/
X/**********************************************************************/
X/************************** OpenFontFile *****************************/
X/**********************************************************************/
X
Xvoid
XOpenFontFile()
X/***********************************************************************
X The original version of this dvi driver reopened the font file each
X time the font changed, resulting in an enormous number of relatively
X expensive file openings. This version keeps a cache of up to
X MAXOPEN open files, so that when a font change is made, the file
X pointer, pxlfp, can usually be updated from the cache. When the
X file is not found in the cache, it must be opened. In this case,
X the next empty slot in the cache is assigned, or if the cache is
X full, the least used font file is closed and its slot reassigned for
X the new file. Identification of the least used file is based on the
X counts of the number of times each file has been "opened" by this
X routine. On return, the file pointer is always repositioned to the
X beginning of the file.
X
X***********************************************************************/
X{
X register int i,least_used,current;
X int firsttime = 1;
X
X#ifdef DEBUG
X if (Debug)
X (void) printf("Open Font file\n");
X#endif
X if (pfontptr == fontptr)
X return; /* we need not have been called */
X
X for (current = 1;
X (current <= nopen) &&
X (pixel_files[current].font_entry != fontptr);
X ++current)
X ; /* try to find file in open list */
X
X if (current <= nopen) /* file already open */
X {
X if( (pxlfp = pixel_files[current].pixel_file_id) != NO_FILE )
X (void) fseek(pxlfp,(long)0,0); /* reposition to start of file */
X }
X else while (1) { /* file not in open list */
X if (firsttime && nopen < MAXOPEN) /* just add it to list */
X current = ++nopen;
X else { /* list full -- find least used file, */
X /* close it, and reuse slot for new file */
X FILE *fid;
X
X least_used = 1;
X for (i = 2; i <= nopen; ++i)
X if (pixel_files[least_used].use_count >
X pixel_files[i].use_count)
X least_used = i;
X fid = pixel_files[least_used].pixel_file_id;
X if (fid != NO_FILE) {
X struct font_entry *fp = pixel_files[least_used].font_entry;
X
X fp->font_file_id = NULL;
X#ifdef STATS
X if (Stats)
X (void) fprintf(stderr, "PXL file %s closed.\n", fp->name);
X#endif
X (void) fclose( fid );
X }
X current = least_used;
X }
X firsttime = 0;
X /* it seems we have to use open/fdopen on Suns to get the errno */
X if ((i = open(fontptr->name, O_RDONLY)) < 0) {
X if (errno == EMFILE) {
X --nopen;
X continue;
X }
X else {
X perror("");
X Warning("PXL file %s could not be opened",fontptr->name);
X pxlfp = NO_FILE;
X }
X }
X else if ((pxlfp = fdopen(i, "r")) == NULL) {
X Warning("Could not fdopen PXL file %s", fontptr->name);
X pxlfp = NO_FILE;
X }
X else {
X#ifdef STATS
X if (Stats)
X (void) fprintf(stderr, "PXL file %s opened.\n", fontptr->name);
X#endif
X }
X pixel_files[current].pixel_file_id = pxlfp;
X pixel_files[current].font_entry = fontptr;
X pixel_files[current].use_count = 0;
X break;
X }
X pfontptr = fontptr; /* make previous = current font */
X fontptr->font_file_id = pxlfp; /* set file identifier */
X pixel_files[current].use_count++; /* update reference count */
X}
X
X#ifdef CREOPT
X/*-->OpenOutput*/ /* generate a unique file name and open it */
X/**********************************************************************/
X/*************************** OpenOutput *******************************/
X/**********************************************************************/
X
X
XFILE*
XOpenOutput()
X{
X FILE* fp;
X long t;
X int n = 0;
X char *p, *pp, b[256];
X int nd;
X
X time( &t );
X t = t % 100000;
X (void) strcpy( outfname, SPOOLFILE );
X (void) sprintf( b, "%s.%s.%x", logname(), rootname, t );
X if( (nd=strlen(b)-MAXFLEN) > 0 ) {
X for(pp=(p=rindex(b,'.')); p && *p != '\0'; *(pp-nd) = *p++, pp++) ;
X *(pp-nd) = '\0';
X }
X (void) strcat( outfname, b );
X
X while( access(outfname,0) == 0 ) {
X n += 1;
X if( n > 10 )
X Fatal( "Unable to create a unique output file name: %s\n", outfname );
X (void) strcpy( outfname, SPOOLFILE );
X (void) sprintf( b, "%s.%s.%x.%d", logname(), rootname, t, n );
X if( (nd=strlen(b)-MAXFLEN) > 0 ) {
X for(pp=(p=rindex(b,'.')); p && *p != '\0'; *(pp-nd) = *p++, pp++) ;
X *(pp-nd) = '\0';
X }
X (void) strcat( outfname, b );
X }
X
X if( (fp=fopen(outfname,"w")) == NULL )
X Fatal("Unable to create output file: %s\n", outfname);
X
X return( fp );
X}
X#endif CREOPT
X
X/*-->PixRound*/
X/**********************************************************************/
X/***************************** PixRound *****************************/
X/**********************************************************************/
X
Xint
XPixRound(x, conv) /* return rounded number of pixels */
X register int x; /* in DVI units */
X int conv; /* conversion factor */
X{
X int sign = 0;
X if (x < 0) {
X sign++;
X x = -x;
X }
X x = (int)((x + (conv >> 1)) / conv);
X if (sign)
X x = -x;
X return x;
X}
X
X
X/*-->PutInt*/
X/**********************************************************************/
X/***************************** PutInt *******************************/
X/**********************************************************************/
X
Xvoid
XPutInt(n) /* output an integer followed by a space */
Xregister int n;
X{
X char buf[10];
X register char *b;
X
X if( n == 0 )
X EMITC('0');
X else {
X if( n < 0 ) {
X EMITC('-');
X n = -n;
X }
X
X for(b=buf; n>0; ) {
X *b++ = digit[n%10];
X n /= 10;
X }
X
X for( ; b>buf; )
X EMITC(*--b);
X }
X
X EMITC(' ');
X}
X
X
X/*-->PutOct*/
X/**********************************************************************/
X/***************************** PutOct *******************************/
X/**********************************************************************/
X
Xvoid
XPutOct(n) /* output an 3 digit octal number preceded by a "\" */
Xregister int n;
X{
X EMITC( '\\' );
X EMITC( digit[(n&0300)>>6] );
X EMITC( digit[(n&0070)>>3] );
X EMITC( digit[n&0007] );
X}
X
X
X/*-->ReadFontDef*/
X/**********************************************************************/
X/**************************** ReadFontDef ***************************/
X/**********************************************************************/
X
Xint
XReadFontDef(k)
Xint k;
X{
X int t, i;
X register struct font_entry *tfontptr;/* temporary font_entry pointer */
X register struct char_entry *tcharptr;/* temporary char_entry pointer */
X int nmag;
X char nname[128];
X
X if ((tfontptr = NEW(struct font_entry)) == NULL)
X Fatal("can't malloc space for font_entry");
X tfontptr->next = hfontptr;
X tfontptr->font_file_id = NULL;
X fontptr = hfontptr = tfontptr;
X
X tfontptr->ncdl = 0;
X#ifdef STATS
X tfontptr->nbpxl = 0;
X tfontptr->ncts = 0;
X#endif
X
X tfontptr->k = k;
X tfontptr->c = NoSignExtend(dvifp, 4); /* checksum */
X tfontptr->s = NoSignExtend(dvifp, 4); /* space size */
X tfontptr->d = NoSignExtend(dvifp, 4); /* design size */
X tfontptr->a = NoSignExtend(dvifp, 1); /* area length for font name */
X tfontptr->l = NoSignExtend(dvifp, 1); /* device length */
X GetBytes(dvifp, tfontptr->n, tfontptr->a+tfontptr->l);
X tfontptr->n[tfontptr->a+tfontptr->l] = '\0';
X tfontptr->font_space = tfontptr->s/6; /* never used */
X tfontptr->font_mag = (int)((ActualFactor((int)(((float)tfontptr->s/
X (float)tfontptr->d)*1000.0 + 0.5)) *
X#ifdef USEGLOBALMAG
X ActualFactor(mag) *
X#endif
X (float)RESOLUTION * 5.0) + 0.5);
X
X if ((t = findfile(PXLvec,nPXLvec,"",
X tfontptr->n,tfontptr->font_mag,tfontptr->name,
X nname, &nmag)) == 0)
X Fatal("no font %s.%d",tfontptr->n,mag);
X
X if (tfontptr != pfontptr)
X OpenFontFile();
X if ( pxlfp == NO_FILE ) { /* allow missing pxl files */
X tfontptr->magnification = 0;
X tfontptr->designsize = 0;
X for (i = FIRSTPXLCHAR; i <= LASTPXLCHAR; i++) {
X tcharptr = &(tfontptr->ch[i]);
X tcharptr->width = 0;
X tcharptr->height = 0;
X tcharptr->xOffset= 0;
X tcharptr->yOffset = 0;
X tcharptr->where.isloaded = 0;
X tcharptr->where.address.fileOffset = NONEXISTANT;
X tcharptr->tfmw = 0;
X }
X return;
X }
X
X tfontptr->type = (t == -1) ? FONT_PXL : FONT_PK;
X
X if (tfontptr->type == FONT_PXL) { /* PXL file */
X if ((t = NoSignExtend(pxlfp, 4)) != PXLID)
X Fatal("PXL ID = %d, can only process PXL ID = %d files",
X t, PXLID);
X (void) fseek(pxlfp, (long)-20, 2);
X t = NoSignExtend(pxlfp, 4);
X if ((tfontptr->c != 0) && (t != 0) && (tfontptr->c != t))
X Warning("font = \"%s\",\n\
X-->font checksum = %d,\n\
X-->dvi checksum = %d",
X tfontptr->name, tfontptr->c, t);
X tfontptr->magnification = NoSignExtend(pxlfp, 4);
X tfontptr->designsize = NoSignExtend(pxlfp, 4);
X
X (void) fseek(pxlfp, (long) (NoSignExtend(pxlfp, 4) * 4), 0);
X
X for (i = FIRSTPXLCHAR; i <= LASTPXLCHAR; i++) {
X tcharptr = &(tfontptr->ch[i]);
X tcharptr->width = NoSignExtend(pxlfp, 2);
X tcharptr->height = NoSignExtend(pxlfp, 2);
X tcharptr->xOffset= SignExtend(pxlfp, 2);
X tcharptr->yOffset = SignExtend(pxlfp, 2);
X tcharptr->where.isloaded = 0;
X tcharptr->where.address.fileOffset = NoSignExtend(pxlfp, 4) * 4;
X tcharptr->tfmw = ((float)NoSignExtend(pxlfp, 4) *
X (float)tfontptr->s) /
X (float)(1<<20);
X tcharptr->kern = 0;
X }
X }
X else { /* PK file */
X int hppp, vppp;
X
X if (NoSignExtend(pxlfp, 1) != PK_PRE)
X Fatal("Pre command missing from PK file");
X if ((t = NoSignExtend(pxlfp, 1)) != PK_ID)
X Fatal("PK ID = %d, can only process PK ID = %d files",
X t, PK_ID);
X /* throw away comment */
X for (i = NoSignExtend(pxlfp, 1); i > 0; i--)
X (void) NoSignExtend(pxlfp, 1);
X tfontptr->designsize = NoSignExtend(pxlfp, 4);
X t = NoSignExtend(pxlfp, 4);
X if ((tfontptr->c != 0) && (t != 0) && (tfontptr->c != t))
X Warning("font = \"%s\",\n\
X-->font checksum = %d,\n\
X-->dvi checksum = %d",
X tfontptr->name, tfontptr->c, t);
X hppp = NoSignExtend(pxlfp, 4);
X vppp = NoSignExtend(pxlfp, 4);
X if (hppp != vppp)
X Warning("font = \"%s\" - aspect ratio not 1:1", tfontptr->name);
X tfontptr->magnification = hppp * 72.27 * (float)5/65536 + 0.5;
X /* don't read all character info now - just mark them as pk data */
X for (i = FIRSTPXLCHAR; i < LASTPXLCHAR; i++) {
X tcharptr = &(tfontptr->ch[i]);
X tcharptr->where.isloaded = 0;
X tcharptr->where.address.fileOffset = 0;
X }
X tfontptr->offset = ftell(pxlfp);
X }
X}
X
X
X/*-->ReadPostAmble*/
X/**********************************************************************/
X/************************** ReadPostAmble ***************************/
X/**********************************************************************/
X
Xvoid
XReadPostAmble(load)
Xint load;
X/***********************************************************************
X This routine is used to read in the postamble values. It
X initializes the magnification and checks the stack height prior to
X starting printing the document.
X***********************************************************************/
X{
X FindPostAmblePtr (&postambleptr);
X if (NoSignExtend(dvifp, 1) != POST)
X Fatal ("POST missing at head of postamble");
X#ifdef DEBUG
X if (Debug)
X (void) fprintf (stderr, "got POST command\n");
X#endif
X ppagep = NoSignExtend(dvifp, 4);
X num = NoSignExtend(dvifp, 4);
X den = NoSignExtend(dvifp, 4);
X mag = NoSignExtend(dvifp, 4);
X#ifdef USEGLOBALMAG
X if( usermag > 0 && usermag != mag )
X (void) fprintf(stderr, "DVI magnification of %d over-ridden by user mag of %d\n", mag, usermag );
X#endif
X if( usermag > 0 ) mag = usermag;
X#ifndef USEGLOBALMAG
X if( mag != 1000 )
X (void) fprintf(stderr, "Magnification of %d ignored.\n", mag);
X#endif
X hconv = DoConv(num, den, hconvRESOLUTION);
X vconv = DoConv(num, den, vconvRESOLUTION);
X
X (void) NoSignExtend(dvifp, 4); /* height-plus-depth of tallest page */
X (void) NoSignExtend(dvifp, 4); /* width of widest page */
X if (NoSignExtend(dvifp, 2) >= STACKSIZE)
X Fatal ("Stack size is too small");
X (void) NoSignExtend(dvifp, 2); /* this reads the number of pages in */
X /* the DVI file */
X#ifdef DEBUG
X if (Debug)
X (void) fprintf (stderr, "now reading font defs");
X#endif
X if (load) GetFontDef ();
X}
X
X
X/*-->SetChar*/
X/**********************************************************************/
X/***************************** SetChar ******************************/
X/**********************************************************************/
X
XLoadAChar(ptr)
Xregister struct char_entry *ptr;
X{
X long *pr;
X register int nints;
X
X if (ptr->where.address.fileOffset == NONEXISTANT) {
X ptr->where.address.pixptr = NULL;
X ptr->where.isloaded = loadpass;
X return;
X }
X
X if (ptr->where.isloaded == 0) {
X /* haven't had this character before */
X OpenFontFile();
X if (fontptr->type == FONT_PXL) { /* this is a PXL file */
X (void) fseek(pxlfp, ptr->where.address.fileOffset, 0);
X nints = ((ptr->width + 31) >> 5) * ptr->height;
X pr = (long *)malloc((unsigned)(nints*sizeof(long)) );
X if (pr == NULL)
X Fatal("Unable to allocate memory for char\n");
X (void) fread((char *)pr, 4, nints, pxlfp);
X ptr->where.address.pixptr = pr;
X }
X else { /* this is a PK file */
X int packet_length, raster_length;
X
X if (ptr->where.address.fileOffset == 0) {
X int car;
X FlagByte flag;
X
X /* look for char in PK file */
X (void) fseek(pxlfp, fontptr->offset, 0);
X flag = SkipSpecials();
X while (flag.code != PK_POST &&
X ptr->where.address.fileOffset == 0) {
X fontptr->offset = ftell(pxlfp) - 1;
X if (flag.extended) {
X if (flag.length_prefix == 3) {
X /* long character preamble */
X packet_length = NoSignExtend(pxlfp, 4);
X car = NoSignExtend(pxlfp, 4);
X }
X else {
X /* extended short character preamble */
X packet_length = (flag.length_prefix << 16) +
X NoSignExtend(pxlfp, 2);
X car = NoSignExtend(pxlfp, 1);
X }
X }
X else {
X /* short character preamble */
X packet_length = (flag.length_prefix << 8) +
X NoSignExtend(pxlfp, 1);
X car = NoSignExtend(pxlfp, 1);
X }
X if (car > 127 || car < 0)
X Warning("Character %d in font %s out of range",
X car, fontptr->name);
X else
X fontptr->ch[car].where.address.fileOffset =
X fontptr->offset;
X#ifdef notdef
X fprintf(stderr, "font %s: flag %d car %d pl %d dyn_f %d\n",
X fontptr->name, flag.code, car, packet_length,
X flag.dyn_f);
X#endif notdef
X /* just make a note of where this character is, and then
X skip past it */
X if (packet_length <= 0)
X Fatal("Bad packet length %d in %s",
X packet_length, fontptr->name);
X (void) fseek(pxlfp, (long)packet_length, 1);
X flag = SkipSpecials();
X }
X }
X if (ptr->where.address.fileOffset == 0)
X Fatal("Character missing from font");
X (void) fseek(pxlfp, ptr->where.address.fileOffset, 0);
X ptr->flag.code = NoSignExtend(pxlfp, 1);
X if (ptr->flag.extended) {
X if (ptr->flag.length_prefix == 3) {
X /* read long preamble */
X packet_length = NoSignExtend(pxlfp, 4);
X (void) NoSignExtend(pxlfp, 4); /* car */
X ptr->tfmw = ((float)NoSignExtend(pxlfp, 4) *
X (float)fontptr->s) /
X (float)(1<<20);
X (void) NoSignExtend(pxlfp, 4); /* hor_esc */
X (void) NoSignExtend(pxlfp, 4); /* ver_esc */
X ptr->width = NoSignExtend(pxlfp, 4);
X ptr->height = NoSignExtend(pxlfp, 4);
X ptr->xOffset = SignExtend(pxlfp, 4);
X ptr->yOffset = SignExtend(pxlfp, 4);
X raster_length = packet_length - 24;
X }
X else {
X /* read extended short preamble */
X packet_length = ((ptr->flag.length_prefix) << 16) +
X NoSignExtend(pxlfp, 2);
X (void) NoSignExtend(pxlfp, 1); /* car */
X ptr->tfmw = (NoSignExtend(pxlfp, 1) << 16);
X ptr->tfmw += NoSignExtend(pxlfp, 2);
X ptr->tfmw = ((float)ptr->tfmw * (float)fontptr->s) /
X (float)(1<<20);
X (void) NoSignExtend(pxlfp, 2); /* hor_esc */
X ptr->width = NoSignExtend(pxlfp, 2);
X ptr->height = NoSignExtend(pxlfp, 2);
X ptr->xOffset = SignExtend(pxlfp, 2);
X ptr->yOffset = SignExtend(pxlfp, 2);
X raster_length = packet_length - 13;
X }
X }
X else {
X /* read short preamble */
X packet_length = ((ptr->flag.length_prefix) << 8)
X + NoSignExtend(pxlfp, 1);
X (void) NoSignExtend(pxlfp, 1); /* car */
X ptr->tfmw = (NoSignExtend(pxlfp, 1) << 16);
X ptr->tfmw += NoSignExtend(pxlfp, 2);
X ptr->tfmw = ((float)ptr->tfmw * (float)fontptr->s) /
X (float)(1<<20);
X (void) NoSignExtend(pxlfp, 1); /* hor_esc */
X ptr->width = NoSignExtend(pxlfp, 1);
X ptr->height = NoSignExtend(pxlfp, 1);
X ptr->xOffset = SignExtend(pxlfp, 1);
X ptr->yOffset = SignExtend(pxlfp, 1);
X raster_length = packet_length - 8;
X }
X pr = (long *)malloc((unsigned)raster_length);
X if (pr == NULL)
X Fatal("Unable to allocate memory for char\n");
X (void) fread((char *)pr, raster_length, 1, pxlfp);
X ptr->where.address.pixptr = pr;
X#ifdef notdef
X fprintf(stderr, "PK Char: t=%d, w=%d, h=%d, x=%d, y=%d\n",
X ptr->tfmw, ptr->width, ptr->height,
X ptr->xOffset, ptr->yOffset);
X#endif
X }
X }
X ptr->where.isloaded = loadpass;
X
X EmitChar(ptr);
X /* we should really free the space used by the PXL data after this
X point, but it is not large, and besides, we may want to be
X more clever in the future, about sending bitmaps. So keep
X the data around */
X}
X
XFlagByte
XSkipSpecials()
X{
X int i;
X FlagByte flag;
X
X do {
X flag.code = NoSignExtend(pxlfp, 1);
X if (flag.code >= 240) {
X switch (flag.code) {
X case 240: case 241: case 242: case 243:
X for (i = NoSignExtend(pxlfp, flag.code-240+1); i > 0; i--)
X NoSignExtend(pxlfp, 1);
X break;
X case 244:
X (void) NoSignExtend(pxlfp, 4);
X break;
X case 245: case 246:
X break;
X default:
X Fatal("Unexpected %d !", flag);
X }
X }
X } while (flag.code >= 240 && flag.code != PK_POST);
X return flag;
X}
X
Xvoid
XSetChar(c, command, PassNo)
Xint c, command, PassNo;
X{
X register struct char_entry *ptr; /* temporary char_entry pointer */
X
X ptr = &(fontptr->ch[c]);
X
X if (PassNo == 0) {
X if (ptr->where.isloaded != loadpass)
X LoadAChar(ptr);
X return;
X }
X
X SetPosn(h,v,ptr->kern);
X SetXFont(ptr->where.xfont);
X if (fontptr->font_file_id != NO_FILE) { /* ignore missing fonts */
X EMITC(ptr->where.glyph);
X hh += ptr->realw;
X }
X
X if (command <= SET4)
X h += ptr->tfmw;
X
X#ifdef STATS
X Stnc += 1;
X fontptr->ncts += 1;
X#endif
X}
X
X
X/*-->SetFntNum*/
X/**********************************************************************/
X/**************************** SetFntNum *****************************/
X/**********************************************************************/
X
Xvoid
XSetFntNum(k)
Xint k;
X
X/* this routine is used to specify the font to be used in printing future
X characters */
X
X{
X fontptr = hfontptr;
X while ((fontptr!=NULL) && (fontptr->k!=k))
X fontptr = fontptr->next;
X if (fontptr == NULL)
X Fatal("font %d undefined", k);
X}
X
Xvoid
XSetXFont(xfont)
X struct xfont *xfont;
X{
X register int i;
X int minused = 0;
X
X if (xfont == 0)
X return;
X if (curxfont == xfont) {
X curxfont->usage++;
X return;
X }
X for (i = 0; i < MAXFONTID && assigned_font[i]; i++) {
X if (assigned_font[i] == xfont) {
X EMIT(outfp,"%c%d",ESC,i);
X curxfont = xfont;
X curxfont->usage++;
X return;
X }
X if (assigned_font[i]->usage < assigned_font[minused]->usage)
X minused = i;
X }
X if (i >= MAXFONTID)
X i = minused;
X EMIT(outfp,"%c+%d%s\n%c%d",ESC,i,xfont->xname,ESC,i);
X assigned_font[i] = curxfont = xfont;
X xfont->usage = 1;
X}
X
X/*-->SetPosn*/
X/**********************************************************************/
X/***************************** SetPosn ******************************/
X/**********************************************************************/
X
Xvoid
XSetPosn(x, y, kern) /* output a positioning command */
Xint x, y;
X{
X int rx,ry;
X rx = PixRound(x-hh, hconv) - kern;
X ry = PixRound(y-vv, vconv);
X#ifdef USERELPOS
X if (ry == 0) { /* use relative movement if just moving horizontally */
X if (rx != 0) {
X if (rx > 0) {
X if (rx < 4) {
X if (rx & 2)
X EMITC(MINCH+2);
X if (rx & 1)
X EMITC(MINCH+1);
X }
X else
X EMIT(outfp, "%crr%d ", ESC, rx);
X }
X else
X EMIT(outfp, "%crl%d ", ESC, -rx);
X hh += rx*hconv;
X }
X }
X else if (rx == 0) {
X if (ry > 0)
X EMIT(outfp, "%crd%d ", ESC, ry);
X else
X EMIT(outfp, "%cru%d ", ESC, -ry);
X vv += ry*vconv;
X }
X else {
X#endif
X EMIT(outfp, "%ca%d,%d\n", ESC,
X (LEFT+(rx=PixRound(x,hconv))),
X (TOP-(ry=PixRound(y,vconv))));
X /* must know "real" position on device for relative positioning */
X hh = rx*hconv;
X vv = ry*vconv;
X#ifdef USERELPOS
X }
X#endif
X}
X
X
X/*-->SetRule*/
X/**********************************************************************/
X/***************************** SetRule ******************************/
X/**********************************************************************/
X
Xvoid
XSetRule(a, b, Set)
Xint a, b;
XBOOLEAN Set;
X
X{ /* this routine will draw a rule */
X
X if( a > 0 && b > 0 ) {
X if (a > b)
X EMIT(outfp,"%cy%d,%d,%d,%d\n",ESC,
X LEFT+PixRound(h,hconv),TOP-PixRound(v,vconv),
X PixRound(a,vconv),PixRound(b,hconv));
X else
X EMIT(outfp,"%cx%d,%d,%d,%d\n",ESC,
X LEFT+PixRound(h,hconv),TOP-PixRound(v,vconv),
X PixRound(b,hconv),PixRound(a,vconv));
X }
X if (Set)
X h += b;
X}
X
X
X/*-->SetString*/
X/**********************************************************************/
X/***************************** SetString ****************************/
X/**********************************************************************/
X#ifdef notdef
Xvoid
XSetString(firstch, PassNo) /* read and set a consecutive string of chars */
Xint firstch, PassNo;
X{
X char s[256];
X register char *sp;
X register int c;
X register struct char_entry *ptr;
X int len;
X
X /* read entire string of chars */
X
X for(c = firstch, sp = s; c >= SETC_000 && c <= SETC_127; ) {
X *sp++ = c;
X c = NoSignExtend(dvifp, 1);
X }
X (void) fseek(dvifp, (long) -1, 1); /* backup one character */
X
X len = sp - s; /* NULL's are valid chars, so cant use for string termination */
X
X /* ensure that all characters are loaded, */
X
X for(sp = s; sp < s+len; sp++) {
X ptr = &(fontptr->ch[*sp]);
X if(ptr->where.isloaded != loadpass)
X LoadAChar(ptr);
X }
X
X /* emit the instructions */
X
X if( PassNo == 0 ) return;
X SetPosn(h, v, 0);
X for( sp=s; sp < s+len; sp++) {
X ptr = &(fontptr->ch[*sp]);
X if( fontptr->font_file_id != NO_FILE ) { /* ignore missing fonts */
X SetXFont(ptr->where.xfont);
X EMITC(ptr->where.glyph);
X hh += ptr->realw;
X }
X h += ptr->tfmw;
X }
X
X#ifdef STATS
X Stnc += len;
X fontptr->ncts += len;
X#endif
X}
X#endif
X
X/*-->SignExtend*/
X/**********************************************************************/
X/**************************** SignExtend ****************************/
X/**********************************************************************/
X
Xint
XSignExtend(fp, n) /* return n byte quantity from file fd */
Xregister FILE *fp; /* file pointer */
Xregister int n; /* number of bytes */
X
X{
X int n1; /* number of bytes */
X register int x; /* number being constructed */
X
X x = getc(fp); /* get first (high-order) byte */
X n1 = n--;
X while (n--) {
X x <<= 8;
X x |= getc(fp);
X }
X
X /* NOTE: This code assumes that the right-shift is an arithmetic, rather
X than logical, shift which will propagate the sign bit right. According
X to Kernighan and Ritchie, this is compiler dependent! */
X
X x<<=32-8*n1;
X x>>=32-8*n1; /* sign extend */
X
X#ifdef DEBUG
X if (Debug)
X {
X (void) fprintf(stderr,"\tSignExtend(fp,%d)=%X\n",n1,x);
X }
X#endif
X return(x);
X}
X
X
X/*-->SkipFontDef*/
X/**********************************************************************/
X/**************************** SkipFontDef ***************************/
X/**********************************************************************/
X
Xvoid
XSkipFontDef(k)
Xint k;
X{
X int a, l;
X char n[STRSIZE];
X
X (void) NoSignExtend(dvifp, 4);
X (void) NoSignExtend(dvifp, 4);
X (void) NoSignExtend(dvifp, 4);
X a = NoSignExtend(dvifp, 1);
X l = NoSignExtend(dvifp, 1);
X GetBytes(dvifp, n, a+l);
X}
X
X
X/*-->Warning*/
X/**********************************************************************/
X/***************************** Warning ******************************/
X/**********************************************************************/
X/*VARARGS1*/
X
Xvoid
XWarning(fmt, a, b, c) /* issue a warning */
Xchar *fmt; /* format */
Xchar *a, *b, *c; /* arguments */
X{
X if (G_logging == 0)
X {
X if (G_logfile)
X G_logfp=fopen(G_Logname,"w+");
X else {
X G_logfp=stderr;
X if( G_nowarn ) return;
X }
X G_logging = 1;
X if (G_logfp == NULL) G_logging = -1;
X }
X
X G_errenc = TRUE;
X if (G_logging == 1)
X {
X (void) fprintf(G_logfp, fmt, a, b, c);
X (void) fprintf(G_logfp,"\n");
X }
X}
X
X
/
echo 'Part 01 of DVI -> 2700 driver complete.'
exit
--
UUCP: ...!mcvax!ukc!warwick!cudcv PHONE: +44 203 523037
JANET: cudcv at uk.ac.warwick.daisy ARPA: cudcv at daisy.warwick.ac.uk
Rob McMahon, Computing Services, Warwick University, Coventry CV4 7AL, England
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