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Length: 67700 (0x10874)
Types: TextFile
Names: »dvisun.c«
└─⟦52210d11f⟧ Bits:30007239 EUUGD2: TeX 3 1992-12
└─⟦af5ba6c8e⟧ »unix3.0/DVIWARE.tar.Z«
└─⟦ca79c7339⟧
└─⟦this⟧ »DVIware/crt-viewers/sunview/dvisun/dvisun.c«
/**********************************************************************/
/************************ Global Definitions ************************/
/**********************************************************************/
typedef int BOOLEAN;
/* NOTE: THIS DEFN OF NO_FILE IS DIFFERENT THAN THAT OF FONTS.C (DVIPAGE) */
#define NO_FILE ((FILE *)0)
#define NEW(A) ((A *) malloc(sizeof(A)))
#undef DEBUG /* for massive printing of input */
/* trace information; select by -d */
/* option after filename: */
/* dvibit filename -d */
#ifdef DEBUG
int Debug = 1;
#else
int Debug = 0;
#endif
/*
#define ALLOW_INTERRUPT 1
*/ /* to allow ^C for Debugging */
/* undefine for normal catch-^C mode */
#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 */
/* P. A. MacKay, 15 November, 1989 */
/* #undef USEGLOBALMAG one of the wins in adding this patch is that
globalmag will rarely if ever fail */
#define DVIFORMAT 2
#define FIRSTPKCHAR 0
#ifndef FONTAREA
#define FONTAREA "/usr/local/lib/tex/fonts/pk120"
#endif
/* P. A. MacKay, 15 November, 1989 */
#define LASTPKCHAR 255 /* take full advantage of pk format */
#define NPKCHARS 256
#define PXLID 1001
#define READ 4 /* for access() */
#define RESOLUTION 120 /* is really 91.72192515 (on a bitgraph) */
/* P. A. MacKay, 15 November, 1989 */
#define HI_FONT_FUZZ 9 /* see the explanation of why the fuzz */
#define LO_FONT_FUZZ -9 /* values are so large. (at ReadFontDef) */
#define hconvRESOLUTION 118
#define vconvRESOLUTION 110
#define STACKSIZE 100
#define STRSIZE 257
/**********************************************************************/
/*********************** external definitions ***********************/
/**********************************************************************/
#include "commands.h"
#include <sgtty.h>
#include <signal.h>
#include <stdio.h>
#include <sys/errno.h>
#include <suntool/tool_hs.h>
# include <ctype.h>
#ifdef UCI
# include <strings.h>
#endif UCI
#ifndef UCI
#define MAXOPEN _NFILE /* limit on number of open PK files */
#else
#define MAXOPEN 10 /* Leave room for other files! */
#endif UCI
extern struct pixrect *pr_open();
char *getenv();
char *index();
char *malloc();
char *rindex();
char *sprintf();
char *strcpy();
int dummyInt;
short dummyShort;
char dummyChar;
struct tool *tool = NULL; /* filled in if in window system; clp 7/15/84 */
int set_mode = PIX_COLOR(1) | PIX_SRC; /* default modes */
int clr_mode = PIX_COLOR(0) | PIX_SRC;
int draw_mode = PIX_SRC | PIX_DST;
int invert = 0;
int borders = 1;
/*-->NoSignExtend*/
/**********************************************************************/
/*************************** NoSignExtend ***************************/
/**********************************************************************/
int
NoSignExtend(fp, n) /* return n byte quantity from file fp */
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);
}
/*-->SignExtend*/
/**********************************************************************/
/**************************** SignExtend ****************************/
/**********************************************************************/
int
SignExtend(fp, n) /* return n byte quantity from file fp */
register FILE *fp; /* file pointer */
register int n; /* number of bytes */
{
int n1; /* number of bytes */
register int x; /* number being constructed */
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! */
/* Also, assuming sizeof(int) == 4 is machine dependent (32-bit ints) */
x<<=32-8*n1;
x>>=32-8*n1; /* sign extend */
#ifdef DEBUG
if (Debug)
{
fprintf(stderr,"\tSignExtend(fp,%d)=%X\n",n1,x);
}
#endif
return(x);
}
/**********************************************************************/
/************************* 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 Fatal();
void FindPostAmblePtr();
void GetBytes();
void GetFontDef();
/*
#ifdef ALLOW_INTERRUPT
void GotInterrupt();
#endif
*/
void InitTerm();
int InputWaiting();
void MoveDown();
void MoveOver();
void OpenFontFile();
int PixRound();
int ReadFontDef();
void ReadPostAmble();
void ResetTerm();
void SetChar();
void SetFntNum();
void SetRule();
void SkipFontDef();
void Warning();
void draw_borders();
/**********************************************************************/
/************************* Global Variables *************************/
/**********************************************************************/
int G_errenc = FALSE; /* has an error been encountered? */
char G_Logname[STRSIZE]; /* name of log file, if created */
int G_interactive = TRUE; /* is the program running interactively */
/* (i.e., standard output not redirected)? */
int G_logging = 0; /* Is a log file being created? */
struct sgttyb G_intty; /* information about stdin if interactive */
FILE *G_logfp; /* log file pointer (for errors) */
char G_progname[STRSIZE]; /* program name */
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;
struct pixrect *pixrectptr;
} address;
int flags;
} 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 name[STRSIZE]; /* full name of PK file */
FILE *font_file_id; /* file identifier (0 if none) */
int magnification; /* magnification read from PK file */
int designsize; /* design size read from PK file */
struct char_entry ch[NPKCHARS];/* character information */
struct font_entry *next;
};
struct pixel_list
{
FILE *pixel_file_id; /* file identifier */
int use_count; /* count of "opens" */
#ifdef UCI
char name[STRSIZE]; /* Pathname of the font, for caching */
#endif UCI
};
int hconv, vconv; /* converts DVI units to pixels */
int den; /* denominator specified in preamble */
FILE *dvifp; /* DVI file pointer */
struct font_entry *fontptr; /* font_entry pointer */
struct font_entry *hfontptr=NULL;/* font_entry pointer */
int h; /* current horizontal position */
int hh; /* current horizontal position in pixels */
int v; /* current vertical position */
int vv; /* current vertical position in pixels */
int mag; /* magnification specified in preamble */
int nopen; /* number of open PK 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 PK file identifiers */
struct pixrect *screen, *display;
long postambleptr; /* Pointer to the postamble */
FILE *pkfp; /* PK file pointer */
char *PKpath; /* PK path name for search */
struct sgttyb tty; /* to see if program is running interactively */
int XSIZE = 1152; /* size of physical screen in X and Y dimen */
int YSIZE = 900;
#define DOTS_PER_INCH (80) /* This stuff added by clp, 7/24/84 */
double SFACT = 1.43;
double PFACT = 1.47;
#define FACTOR(n) ((int)((SFACT * n) + 0.5)) /* borders made 45% larger */
#define PAGEFACT(n) ((int)((PFACT * n) + 0.5)) /* pages made 45% larger */
/* Actually, 82 dots/X-inch, 78 dots/Y-inch is closer to the truth. Similarly,
* the X_FACTOR is around 1.446 and Y_FACTOR around 1.435... (for Sun-1).
*/
#define XPAGESIZE PAGEFACT(8.5 * DOTS_PER_INCH) /* 986, 8 1/2 inches wide */
#define YPAGESIZE PAGEFACT(11 * DOTS_PER_INCH) /* 1276, 11 inches tall */
/* The numbers in comments at right below this line assume Sun-1 dimensions */
#define BORDER_BLACK (3)
#define BORDER_WHITE ((XSIZE - XPAGESIZE - 2 * BORDER_BLACK) / 2) /* 16 */
#define BORDER (BORDER_WHITE + BORDER_BLACK) /* 19 */
#ifndef UCI
#define XDEFAULT (-(FACTOR(1.2 * DOTS_PER_INCH) + BORDER)) /* 144+19=163 */
#define YDEFAULT (-(FACTOR(0.9 * DOTS_PER_INCH) + BORDER)) /* 104+19=123 */
#else
#define XDEFAULT (-(FACTOR(1.0 * DOTS_PER_INCH) + BORDER)) /* 144+19=163 */
#define YDEFAULT (-(FACTOR(1.0 * DOTS_PER_INCH) + BORDER)) /* 104+19=123 */
#endif UCI
#define UD_MOVE (YPAGESIZE - (YSIZE - BORDER)) /* 495 */
int xdefault /* = XDEFAULT */, ydefault /* = YDEFAULT */;
int xscreen /* = XDEFAULT */, yscreen /* = YDEFAULT */;
/******************************** Unix only definitions ******************/
struct tchars tcb; /* information about special terminal chars */
/*************************************************************************/
#ifdef TPIC
extern void set_pen_size(), flush_path(), flush_dashed();
extern void add_path(), arc(), flush_spline(), whiten_last(), shade_last();
#define COMLEN 4
static void do_special(k)
int k;
{
char *spstring, *cp, command[COMLEN];
register int len;
spstring = malloc((unsigned) (k+1));
if (spstring == NULL) Fatal("Out of memory");
len = 0;
while (k--) spstring[len++] = NoSignExtend(dvifp, 1);
spstring[len] = '\0';
cp = spstring;
while (isspace(*cp)) ++cp;
len = 0;
while (!isspace(*cp) && *cp && len < COMLEN-1) command[len++] = *cp++;
command[len] = '\0';
hh = PixRound(h, hconv);
vv = PixRound(v, vconv);
if (strcmp(command, "pn") == 0) set_pen_size(cp);
else if (strcmp(command, "fp") == 0) flush_path();
else if (strcmp(command, "da") == 0) flush_dashed(cp, 0);
else if (strcmp(command, "dt") == 0) flush_dashed(cp, 1);
else if (strcmp(command, "pa") == 0) add_path(cp);
else if (strcmp(command, "ar") == 0) arc(cp);
else if (strcmp(command, "sp") == 0) flush_spline();
else if (strcmp(command, "sh") == 0) shade_last();
else if (strcmp(command, "wh") == 0) whiten_last();
/* This ignores any other specials which come along */
free(spstring);
}
#endif TPIC
/**********************************************************************/
/******************************* 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 argind; /* argument index for flags */
int command; /* current command */
long cpagep; /* current page pointer */
char *filename; /* file name */
char *basename; /* file name w/o extension */
register int i; /* command parameter; loop index */
int k; /* temporary parameter */
char n[STRSIZE]; /* command parameter */
int PagesLeft; /* Number of pages left to skip */
int PreLoad = TRUE; /* preload the font descriptions? */
long ppagep; /* previous page pointer */
int SkipEOP = FALSE; /* input is waiting from the terminal, skip to EOP */
int SkipMode = FALSE; /* in skip mode flag */
#ifndef UCI /* Doens't seem to be used anywhere */
int SoundBell = FALSE; /* if false supress bell at end of page */
#endif
int sp; /* stack pointer */
struct stack_entry stack[STACKSIZE]; /* stack */
int t; /* temporary */
char tc; /* temporary character */
char *tcp, *tcp1; /* temporary character pointers */
#ifndef UCI
register struct char_entry *tcharptr;/* temporary char_entry ptr */
#endif
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]);
if (argc < 2) {
fprintf(stderr, "\nusage: %s -binpld +pages dvifile\n\n", G_progname);
AbortRun(1);
}
if (ioctl(1,TIOCGETP,&tty) == -1)
G_interactive = FALSE;
/* get enviroment variables that allows for a path name in unix */
if ((PKpath=getenv("PKFONTS")) == NULL)
PKpath = FONTAREA;
argind = 1;
while (argind < argc && (*argv[argind] == '-' || *argv[argind] == '+'))
{
tcp = argv[argind];
if (*tcp == '-')
{ tcp++;
switch(*tcp){
#ifndef UCI
case 'b': /* b supresses the bell at end of page */
SoundBell = TRUE;
break;
#endif UCI
#ifdef DEBUG
case 'd': /* d selects Debug output */
Debug = TRUE;
break;
#endif
case 'i': /* i inverts the output to white-on-black */
invert = 1;
break;
case 'l': /* l prohibits logging of errors */
G_logging = -1;
break;
case 'n': /* n turns off the drawing of borders */
borders = 0;
break;
case 'p': /* p prohibits pre-font loading */
PreLoad = 0;
break;
default:
printf("%c is not a legal flag\n", *tcp);
}
} else
{ sscanf(&argv[argind][1], "%d", &PagesLeft);
SkipMode = TRUE;
PagesLeft++;
}
argind++;
}
filename = (char *) calloc (STRSIZE, 1);
basename = (char *) calloc (STRSIZE, 1);
tcp = index(argv[argind], '.');
strcpy(filename,argv[argind]);
if (tcp == NULL) {
strcpy(basename,filename);
strcat(filename,".dvi");
} else
strncpy(basename,argv[argind],tcp-argv[argind]);
if ((dvifp=BINARYOPEN(filename,"r")) == NULL) {
fprintf(stderr,"\n");
fprintf(stderr,"%s: can't open \"%s\"\n\n", G_progname, filename);
AbortRun(1);
}
strcpy(G_Logname, filename);
strcat(G_Logname, "-log");
/* The terminal characteristics must be saved before any attempt is made */
/* to process the DVI file, so that if the latter should fail, procedure */
/* Fatal will be able to correctly restore the terminal state. */
if (G_interactive) {
ioctl(0, TIOCGETC, &tcb); /* get special characters */
ioctl(0, TIOCGETP, &G_intty); /* get modes */
tty = G_intty;
tty.sg_flags |= CBREAK;
tty.sg_flags &= ~ECHO;
ioctl(0, TIOCSETP, &tty); /* set modes */
}
/*
#ifndef ALLOW_INTERRUPT
signal(SIGINT, SIG_IGN); */ /* ignore interrupts */ /*
#endif
*/
if ( ! Debug ) InitTerm();
/*
#ifdef ALLOW_INTERRUPT
signal(SIGINT, GotInterrupt); */ /* catch interrupts */ /*
#endif
*/
xdefault = XDEFAULT; ydefault = YDEFAULT; /* initialize here */
xscreen = XDEFAULT; yscreen = YDEFAULT; /* (can't in decl) */
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 (PreLoad)
{
ReadPostAmble();
fseek(dvifp, (long) 14, 0);
}
else
{
num = NoSignExtend(dvifp, 4);
den = NoSignExtend(dvifp, 4);
mag = NoSignExtend(dvifp, 4);
hconv = DoConv(num, den, hconvRESOLUTION);
vconv = DoConv(num, den, vconvRESOLUTION);
}
k = NoSignExtend(dvifp, 1);
GetBytes(dvifp, n, k);
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);
break;
case SET_RULE:
val = NoSignExtend(dvifp, 4);
val2 = NoSignExtend(dvifp, 4);
if (!SkipMode) SetRule(val, val2, 1);
break;
case PUT1:case PUT2:case PUT3:case PUT4:
val = NoSignExtend(dvifp,command-PUT1+1);
if (!SkipMode) SetChar(val, command);
break;
case PUT_RULE:
val = NoSignExtend(dvifp, 4);
val2 = NoSignExtend(dvifp, 4);
if (!SkipMode) SetRule(val, val2, 0);
break;
case NOP:
break;
case BOP:
cpagep = ftell(dvifp) - 1;
for (i=0; i<=9; i++)
NoSignExtend(dvifp, 4);
ppagep = NoSignExtend(dvifp, 4);
pr_rop(display, 0, 0, display->pr_size.x, display->pr_size.y, clr_mode, NULL, 0, 0);
h = v = w = x = y = z = 0;
sp = 0;
fontptr = NULL;
if (PagesLeft)
{ PagesLeft--;
if (PagesLeft <= 0) SkipMode = FALSE;
};
break;
case EOP:
if (borders && !SkipMode && !SkipEOP)
draw_borders();
if (SkipEOP) { SkipMode = FALSE; SkipEOP = FALSE; }
if (G_interactive && !SkipMode) {
t = FALSE;
while (!t) { /* sorry about this flow of control kludge */
t = TRUE;
tc = GetChar();
if (tc==tcb.t_eofc || tc==tcb.t_intrc) AllDone();
switch (tc) {
case ' ': /* normal case - start next page */
case '\r':
case '\n':
#ifdef UCI
case 'n': /* Next page, like Previous page */
case 'N':
#endif UCI
xscreen = xdefault; yscreen = ydefault;
break;
case 'U':
case 'u': /* move up and redisplay */
yscreen += UD_MOVE;
fseek(dvifp, cpagep, 0);
break;
case 'D':
case 'd': /* move down and redisplay */
yscreen -= UD_MOVE;
fseek(dvifp, cpagep, 0);
break;
case 'L':
case 'l': /* move left and redisplay */
xscreen += (XSIZE/3);
fseek(dvifp, cpagep, 0);
break;
case 'R':
case 'r': /* move right and redisplay */
xscreen -= (XSIZE/3);
fseek(dvifp, cpagep, 0);
break;
case 'P':
case 'p': /* redisplay from previous page */
if (ppagep != -1)
fseek(dvifp, ppagep, 0);
else
fseek(dvifp, cpagep, 0);
xscreen = xdefault; yscreen = ydefault;
break;
case 'q': /* quit */
case 'Q':
case 'e': /* exit */
case 'E':
AllDone();
break;
case '-':
/* read in val */
val = ReadInt();
#ifdef UCI
if (val == 0) val = 1; /* Just "-" => "-1" */
#endif UCI
while (val-- && ppagep != -1)
{ fseek(dvifp, ppagep, 0);
NoSignExtend(dvifp, 1);
for(i=0; i<=9; i++)
NoSignExtend(dvifp, 4);
cpagep = ppagep;
ppagep = NoSignExtend(dvifp, 4);
}
fseek(dvifp, cpagep, 0);
xscreen = xdefault; yscreen = ydefault;
break;
#ifdef DEBUG
case 'f': /* fine tune y */
ydefault = ReadInt();
yscreen = ydefault;
fseek(dvifp, cpagep, 0);
break;
case 'h': /* fine tune hconv */
hconv = DoConv(num, den, ReadInt());
fseek(dvifp, cpagep, 0);
break;
case 'v': /* fine tune hconv */
vconv = DoConv(num, den, ReadInt());
fseek(dvifp, cpagep, 0);
break;
#endif
case '+':
/* read in val */
val = ReadInt();
SkipMode = TRUE;
PagesLeft = val;
break;
default:
t = FALSE;
}
}
}
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 (!SkipMode) MoveOver(val);
break;
case W0:
if (!SkipMode) MoveOver(w);
break;
case W1:case W2:case W3:case W4:
w = SignExtend(dvifp,command-W1+1);
if (!SkipMode) MoveOver(w);
break;
case X0:
if (!SkipMode) MoveOver(x);
break;
case X1:case X2:case X3:case X4:
x = SignExtend(dvifp,command-X1+1);
if (!SkipMode) MoveOver(x);
break;
case DOWN1:case DOWN2:case DOWN3:case DOWN4:
val = SignExtend(dvifp,command-DOWN1+1);
if (!SkipMode) MoveDown(val);
break;
case Y0:
if (!SkipMode) MoveDown(y);
break;
case Y1:case Y2:case Y3:case Y4:
y = SignExtend(dvifp,command-Y1+1);
if (!SkipMode) MoveDown(y);
break;
case Z0:
if (!SkipMode) MoveDown(z);
break;
case Z1:case Z2:case Z3:case Z4:
z = SignExtend(dvifp,command-Z1+1);
if (!SkipMode) MoveDown(z);
break;
case FNT1:case FNT2:case FNT3:case FNT4:
if (StdinInputWaiting()) { SkipMode = TRUE; SkipEOP = TRUE;}
if (!SkipMode) SetFntNum(NoSignExtend(dvifp,command-FNT1+1));
break;
case XXX1:case XXX2:case XXX3:case XXX4:
k = NoSignExtend(dvifp,command-XXX1+1);
#ifndef TPIC
while (k--)
NoSignExtend(dvifp, 1);
#else
if (SkipMode) {
while (k--) (void) NoSignExtend(dvifp, 1);
}
else {
if (StdinInputWaiting()) { SkipMode = TRUE; SkipEOP = TRUE;}
else do_special(k);
}
#endif TPIC
break;
case FNT_DEF1:case FNT_DEF2:case FNT_DEF3:case FNT_DEF4:
if (PreLoad)
{
SkipFontDef (NoSignExtend(dvifp, command-FNT_DEF1+1));
}
else
{
ReadFontDef (NoSignExtend(dvifp, command-FNT_DEF1+1));
}
break;
case PRE:
Fatal("PRE occurs within file");
break;
case POST:
fseek(dvifp, cpagep, 0);
SkipMode = FALSE;
PagesLeft = 0;
break;
case POST_POST:
Fatal("POST_POST with no preceding POST");
break;
default:
if (command >= FONT_00 && command <= FONT_63)
{if (StdinInputWaiting()) { SkipMode = TRUE; SkipEOP = TRUE;}
if (!SkipMode) SetFntNum(command - FONT_00);}
else if (command >= SETC_000 && command <= SETC_127)
{if (!SkipMode) SetChar(command - SETC_000, command);}
else
Fatal("%d is an undefined command", command);
break;
}
}
/* A new routine added by clp, 7/23/84, tries to explicitly draw in the
* page borders... note that we assume 116 pixels/inch is the scale the
* document is presented in (the display appears 45% larger than life),
* and that pages are offset 1.2 inches from the left and 0.9 inches from
* the top by dvi output drivers (our imagen driver does this). Note that
* 116/inch is only approximate, h/vconvRESOLUTION are the truth.
*/
void
draw_borders()
{
int x = xdefault - xscreen;
int y = ydefault - yscreen;
pr_rop(screen, /* top horizontal */
BORDER_WHITE + x, BORDER_WHITE + y,
XPAGESIZE + (2 * BORDER_BLACK), BORDER_BLACK,
set_mode,
NULL, 0, 0);
pr_rop(screen, /* bottom horizontal */
BORDER_WHITE + x, y + YPAGESIZE,
XPAGESIZE + (2 * BORDER_BLACK), BORDER_BLACK,
set_mode,
NULL, 0, 0);
pr_rop(screen, /* left vertical */
BORDER_WHITE + x, BORDER + y,
BORDER_BLACK, YPAGESIZE - BORDER,
set_mode,
NULL, 0, 0);
pr_rop(screen, /* right vertical */
BORDER + x + XPAGESIZE, BORDER + y,
BORDER_BLACK, YPAGESIZE - BORDER,
set_mode,
NULL, 0, 0);
}
/* #define UD_MOVE (YPAGESIZE - (YSIZE - BORDER)) */
/*-->AbortRun*/
/**********************************************************************/
/*************************** AbortRun *******************************/
/**********************************************************************/
void
AbortRun(code)
int code;
{
if (tool != NULL)
tool_destroy(tool);
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()
{
#ifndef UCI
char t;
#else
int t;
#endif
ResetTerm();
if (G_errenc && G_logging == 1) {
#ifndef UCI
fseek(G_logfp, 0, 0);
#else
fseek(G_logfp, 0L, 0);
#endif
while ((t=getc(G_logfp)) != EOF)
putchar(t);
}
if (G_logging == 1) printf("Log file created\n");
AbortRun(G_errenc);
}
/*-->DoConv*/
/**********************************************************************/
/****************************** DoConv ******************************/
/**********************************************************************/
int DoConv(num, den, convResolution)
{
register float conv;
conv = ((float)num/(float)den) *
#ifdef USEGLOBALMAG
ActualFactor(mag) * /* put back in by clp, 8/22/84 */
/* ((float) mag/1000.0) * and this taken out... */
#endif
((float)convResolution/254000.0);
return((int) (1.0 / conv + 0.5));
}
/*-->Fatal*/
/**********************************************************************/
/****************************** Fatal *******************************/
/**********************************************************************/
/* VARARGS */
void
Fatal(fmt, args)/* issue a fatal error message */
char *fmt; /* format */
char *args; /* arguments */
{
if (G_logging == 1)
{
fprintf(G_logfp, "%s: FATAL--", G_progname);
_doprnt(fmt, &args, G_logfp);
fprintf(G_logfp, "\n");
}
ResetTerm();
fprintf(stderr,"\n");
fprintf(stderr, "%s: FATAL--", G_progname);
_doprnt(fmt, &args, stderr);
fprintf(stderr, "\n\n");
#ifdef UCI
perror("perror");
#endif UCI
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;
}
#ifndef UCI
fseek (dvifp, (*postambleptr) - 4, 0);
#else
fseek(dvifp, (long) ((*postambleptr) - 4), 0);
#endif
*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. Note that the font directory is not yet loaded. In order to
adapt ourselves to the existing "verser" the following font paramters
are copied onto output fontno (4 bytes), chksum, fontmag,
fontnamelength (1 byte), fontname. At the end, a -1 is put onto the
file.
***********************************************************************/
{
#ifndef UCI
char str[50], *calloc ();
unsigned char byte;
int i, fnamelen;
#else
/* char *calloc(); */
unsigned char byte;
#endif
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");
}
/*
#ifdef ALLOW_INTERRUPT */
/*-->GotInterrupt*/
/**********************************************************************/
/*************************** GotInterrupt ***************************/
/**********************************************************************/
/* ARGSUSED */ /*
void
GotInterrupt(sig) */ /* don't leave terminal in a weird state */ /*
int sig;
{
ResetTerm();
if (G_logging == 1) printf("Log file created\n");
AbortRun(G_errenc);
}
#endif
*/
/*-->InitTerm*/
/**********************************************************************/
/***************************** InitTerm *****************************/
/**********************************************************************/
/*
* This routine modified to work under the window system by clp, 7/15/84
* A "struct tool *tool" global decl. added and a "tool_destroy(tool)"
* put in AbortRun(); include file changed from pixrect to suntool.
* Almost all of the following routine is new. Also, I had to change
* the getchar() routine to a new GetChar(), which is defined below;
* had to change InputWaiting(stdin) to StdinInputWaiting() as well.
*/
static
struct rect rect = { 0, 0, 0, 0 }; /* X/Y Sizes filled in below */
static
struct cursor cursor = { 0, 0, PIX_DST, NULL };
#define IN_WINDOW_SYSTEM (getenv("WINDOW_PARENT") != NULL)
#define WIN_FD (tool->tl_windowfd)
void
InitTerm() /* initialize terminal */
{
int value = 1;
struct inputmask im;
if (IN_WINDOW_SYSTEM) {
rect.r_width = XSIZE;
rect.r_height = YSIZE;
if ((tool = tool_create("", 0, &rect, NULL)) == NULL) {
perror("pixel (trouble creating tool): ");
exit(1);
}
{
unsigned char red[2], green[2], blue[2];
pw_getcolormap(tool->tl_pixwin, 0, 2, red, green, blue);
if ((!red[0] && !invert) || (red[0] && invert)) {
draw_mode = (PIX_NOT(PIX_SRC) & PIX_DST);
set_mode = PIX_COLOR(0) | PIX_SRC;
clr_mode = PIX_COLOR(1) | PIX_SRC;
}
}
win_setcursor(WIN_FD, &cursor);
input_imnull(&im);
im.im_flags |= IM_ASCII | IM_POSASCII;
win_setinputmask(WIN_FD, &im, NULL, WIN_NULLLINK);
ioctl(WIN_FD, FIONBIO, &value); /* sets non-blocking input */
screen = tool->tl_pixwin->pw_pixrect;
signal(SIGWINCH, SIG_IGN);
tool_install(tool);
} else {
printf("Error not in window system\n");
ResetTerm();
exit(-1);
}
display = screen;
}
#define NO_INPUT (input_readevent(WIN_FD, &ie) == -1 && errno == EWOULDBLOCK)
static
struct inputevent ie;
extern int errno;
static int old_char, waiting_char = 0;
GetChar()
{
int value;
if (IN_WINDOW_SYSTEM) {
if (waiting_char) {
waiting_char = 0;
return(old_char);
}
for (;;) {
if (NO_INPUT) {
value = 0;
ioctl(WIN_FD, FIONBIO, &value); /* sets blocking input */
input_readevent(WIN_FD, &ie);
value = 1;
ioctl(WIN_FD, FIONBIO, &value); /* sets non-blocking input */
}
if (ie.ie_code >= ASCII_FIRST && ie.ie_code <= ASCII_LAST)
break;
}
return(ie.ie_code - ASCII_FIRST);
} else
return(getchar()); /* standalone */
}
StdinInputWaiting()
{
if (IN_WINDOW_SYSTEM) {
if (waiting_char)
return(TRUE); /* saw a waiting char since last GetChar() */
if (NO_INPUT)
return(FALSE);
old_char = ie.ie_code - ASCII_FIRST;
waiting_char = 1; /* so GetChar() sees it */
return(TRUE);
} else
return(InputWaiting(stdin)); /* standalone */
}
/*-->InputWaiting*/
/**********************************************************************/
/************************* InputWaiting *******************************/
/**********************************************************************/
int
InputWaiting(fp)
FILE *fp;
/* this routine returns TRUE if there is input waiting to be read
and FALSE otherwise. note that it may take time to realize
that there is input waiting so the routine may occasionaly
be wrong. */
{
long retval;
if (fp->_cnt != 0) return(TRUE);
ioctl(fileno(fp), FIONREAD, &retval);
return((int)retval);
}
/*-->MoveDown*/
/**********************************************************************/
/**************************** MoveDown ******************************/
/**********************************************************************/
void
MoveDown(a)
int a;
{
v += a;
}
/*-->MoveOver*/
/**********************************************************************/
/**************************** MoveOver ******************************/
/**********************************************************************/
void
MoveOver(b)
int b;
{
h += b;
}
/*-->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, pkfp, 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) printf("Open Font file\n");
#endif
if (pfontptr == fontptr)
return; /* we need not have been called */
for (current = 1;
(current <= nopen) &&
#ifndef UCI
(pixel_files[current].pixel_file_id != fontptr->font_file_id);
#else
strcmp(pixel_files[current].name, fontptr->name);
#endif UCI
++current)
; /* try to find file in open list */
if (current <= nopen) /* file already open */
{
pkfp = pixel_files[current].pixel_file_id;
#ifndef UCI
fseek(pkfp,0,0); /* reposition to start of file */
#else
fseek(pkfp, 0L, 0);
#endif
}
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;
fclose(pixel_files[least_used].pixel_file_id);
current = least_used;
}
if ((pkfp=BINARYOPEN(fontptr->name,"r")) == NULL)
Fatal("PK file \"%s\" could not be opened; %d PK files are open",
fontptr->name,nopen);
pixel_files[current].pixel_file_id = pkfp;
pixel_files[current].use_count = 0;
#ifdef UCI
strcpy(pixel_files[current].name, fontptr->name);
#endif UCI
}
pfontptr = fontptr; /* make previous = current font */
fontptr->font_file_id = pkfp; /* 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));
}
/*
* PK font reading functions
*/
/* ID byte value at the beginning of PK files */
#define PK_ID 89
/* PK op codes */
#define PK_XXX1 240
#define PK_XXX2 241
#define PK_XXX3 242
#define PK_XXX4 243
#define PK_YYY 244
#define PK_POST 245
#define PK_NOP 246
#define PK_PRE 247
#define PK_REPEAT 0xe /* Repeat last row - repeat count in next nibble */
#define PK_AGAIN 0xf /* Repeat only once */
#define PK_LARGE 0x0 /* Long run vaule coming up */
/*
* the macros that read pk values need these variables.
*/
static u_short _nyb_buf,
_nyb_flag,
_pk_repeat;
/*
* get the next nybble of the file. This macro requires
* that 2 integers named _nyb_buf and _nyb_flag be allocated elsewhere in
* the program. In addition, _nyb_flag must be initialized to 0.
*/
#define GET_NYB ((_nyb_flag ^= 1) ? \
((_nyb_buf = (unsigned)getc(pkfp)) >> 4) : \
(_nyb_buf & 0xf))
/*
* The quantity to be packed into nybbles may require an odd number of
* nybbles which will cause the nybble fetching macro to get out of
* sync. The following macro ``clears'' the state of the nybble fetching
* routine and should be executed whenever transitioning from nybble to
* byte (or other) quantities.
*/
#define CLEAR_NYB _nyb_flag = 0;
/*
* this macro gets a PK ``packed number'' from fp and puts it into x.
* It is an adaption of an algorithm presented in Tugboat V. 6, No. 3.
*/
#define GET_PACKED(x) x = get_packed(pkfp, dyn_f)
static u_int
get_packed(pkfp, dyn_f)
register FILE *pkfp;
register u_int dyn_f;
{
register int i, j;
i = GET_NYB;
if (i == 0) {
/*
* we have an arbitrarily long number. scan to
* find the first non-zero nybble which is the
* count of the nybbles in this value.
*/
do {
j = GET_NYB;
i++;
} while (j == 0);
while (--i >= 0)
j = (j << 4) + GET_NYB;
return (j + 193 - 15 * dyn_f);
} else if (i <= dyn_f) {
/* this nybble is the number we want. */
return (i);
} else if (i < 14) {
return (i + 15 * (i - dyn_f - 1) + GET_NYB);
} else if (i == 14) {
_pk_repeat = get_packed (pkfp, dyn_f);
} else {
_pk_repeat = 1;
}
return (i);
}
static u_char bit_mask[] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 };
/* The great and unnecessary pain in using almost all the early viewers,
* and a good many recent ones has been their unfriendly habit of aborting
* when a font could not be found---even if the name was off by only a
* single DPI value (128 in place of 129, for instance.). With the patch
* added below, such failures will hardly ever happen, but you will be
* told of any font substitutions that were necessary. Any program that
* uses the access() routine can adapt this code quite easily.
*
* Strategy:
* If the font cannot be found as requested, a FUZZ amount ranging from
* LO_FONT_FUZZ to HI_FONT_FUZZ is added to the magnification and access()
* is tried on each resultant font filename. If that fails, and the
* DPI value is greater than the base resolution, the DPI value is
* divided by one magstep (1.2) and FUZZ is tried again, and again,
* until the resultant resolution is down at the base resolution given
* by the defined value of RESOLUTION in this program. Then, if the
* design size is > 10, another attempt is made at designsize 10
* (that is cmsy17 -> cmsy10). Smaller fonts are all converted to
* cmr7. (If you don't have cmr7 at the base resolution, you ARE in trouble.)
* One last desperate try is made if even designsize 10 cannot be
* made to work on one of the larger fonts. The brutal substition
* of cmr10 at the base resolution is used, no matter what the font
* may have been supposed to be. (By that time the document looks
* pretty strange in any case.)
* The FUZZ is set very large. 10 units on either side of the requested
* rasterization value. This is so that a directory full of *200pk and
* 240pk fonts can be used when the program asks for 207pk or 248pk.
* 300pk can be used as a substitute for 298pk in the same way. The
* possibilities are quite generous.
*/
/*-->ReadFontDef*/
/**********************************************************************/
/**************************** ReadFontDef ***************************/
/**********************************************************************/
int
ReadFontDef(k)
int k;
{
int t;
register struct font_entry *tfontptr; /* temporary font_entry pointer */
register unsigned c, cc;
long pl, addr;
register u_int i;
u_int hppp, vppp;
int checksum;
u_int tfmw;
double cscale;
register struct char_entry *tcharptr;/* temporary char_entry pointer */
char *direct, *tcp, *tcp1;
int found;
char curarea[STRSIZE];
char requested_font[STRSIZE]; /* P. A. MacKay, 15 November, 1989 */
if ((tfontptr = NEW(struct font_entry)) == NULL)
Fatal("can't malloc space for font_entry");
tfontptr->next = hfontptr;
fontptr = hfontptr = tfontptr;
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) + 0.5);
if (tfontptr->a != 0) {
sprintf(tfontptr->name, "%s.%dpk", tfontptr->n, tfontptr->font_mag);
} else {
direct = PKpath;
found = FALSE;
do {
tcp = index(direct, ':');
if (tcp == NULL) tcp = strlen(direct) + direct;
strncpy(curarea, direct, tcp-direct);
tcp1 = curarea + (tcp - direct);
*tcp1++ = '/';
*tcp1++ = '\0';
sprintf(tfontptr->name, "%s%s.%dpk", curarea, tfontptr->n, tfontptr->font_mag);
found = (access(tfontptr->name, READ) == 0);
/************ P. A. MacKay, 15 November, 1989: patch for font substitution */
if ( ! found ) {
(void)sprintf(requested_font, "%s.%dpk", tfontptr->n, tfontptr->font_mag);
t = LO_FONT_FUZZ;
}
while ( (!found) && ( t < HI_FONT_FUZZ+2) ) {
(void)sprintf(tfontptr->name, "%s%s.%dpk", curarea, tfontptr->n, ( tfontptr->font_mag + t ) );
found = (access(tfontptr->name, READ) == 0);
if ( (!found) && ( t < HI_FONT_FUZZ ) ) t++;
else {
t = LO_FONT_FUZZ;
if ( tfontptr->font_mag < ( RESOLUTION + HI_FONT_FUZZ) ) {
if ( (*(tfontptr->n + (strlen(tfontptr->n) -2) ) == '1') &&
(*(tfontptr->n + (strlen(tfontptr->n) -1) ) == '0') )
t = HI_FONT_FUZZ+2; /* Force exit from loop */
if (strncmp(tfontptr->n,"cmr7",4) == 0)
t = HI_FONT_FUZZ+2; /* Force exit from loop */
if ( isdigit(*(tfontptr->n + (strlen(tfontptr->n) -2) ) ) ){
*(tfontptr->n + (strlen(tfontptr->n) -2) ) = '1';
*(tfontptr->n + (strlen(tfontptr->n) -1) ) = '0';
}
else {
(void)strncpy(tfontptr->n,"cmr7'\0'",5);
tfontptr->font_mag = RESOLUTION;
}
}
else {
if ( tfontptr->font_mag > ( RESOLUTION + HI_FONT_FUZZ ) )
tfontptr->font_mag = (int)(((float)tfontptr->font_mag / 1.2) );
} /* ENDIF if (tfontptr->font_mag < ( RESOLUTION + HI_FONT_FUZZ) ) */
} /* ENDELSE if ( (!found) && ( t < HI_FONT_FUZZ ) ) */
if (*tcp == '\0') {
if ( (!found) && ( t == HI_FONT_FUZZ+2) &&
( ! (strncmp(tfontptr->n,"cmr",3) == 0) ) ) {
(void)strncpy(tfontptr->n,"cmr10\0",6);
t = LO_FONT_FUZZ; /* really desperate */
}
}
} /* ENDLOOP while ( (!found) && ( t < HI_FONT_FUZZ+2) ) */
if (*tcp) direct = tcp + 1; else direct = tcp;
} while ( !found && *direct != '\0');
if ( requested_font[0] > '\0') {
Warning("Substituted %s for %s\n", tfontptr->name, requested_font);
}
}
/* P. A. MacKay, 15 November, 1989: end of patch for font substitution */
if (tfontptr != pfontptr)
OpenFontFile();
/* if ((t = NoSignExtend(pkfp, 4)) != PXLID)
Fatal("PXL ID = %d, can only process PXL ID = %d files",
t, PXL ID);
*/
fseek (pkfp, 0L, 0); /* make sure at the beginning of pk file */
if (NoSignExtend(pkfp, 1) != PK_PRE) {
Warning("pk font file %s doesn't start with PRE\n",
tfontptr->name);
fclose(tfontptr->font_file_id);
tfontptr->font_file_id = NO_FILE;
return TRUE;
}
if (NoSignExtend(pkfp, 1) != PK_ID) {
Warning("pk font file %s wrong version\n",
tfontptr->name);
fclose(tfontptr->font_file_id);
tfontptr->font_file_id = NO_FILE;
return TRUE;
}
fseek (pkfp, (long) NoSignExtend(pkfp, 1), 1); /* skip comment */
tfontptr->designsize = NoSignExtend(pkfp, 4); /* ds[4] */
checksum = NoSignExtend(pkfp, 4); /* checksum[4] */
hppp = NoSignExtend(pkfp, 4); /* hppp[4] */
vppp = NoSignExtend(pkfp, 4); /* vppp[4] */
cscale = (double) tfontptr->s / (double)(1 << 20);
while ((c = NoSignExtend(pkfp, 1)) != EOF) {
if (c >= PK_XXX1) { /* commands are just skipped */
switch (c) {
case PK_XXX1: /* pk_xxx1 k[1] x[k] */
fseek (pkfp, (long)NoSignExtend(pkfp,1), 1);
break;
case PK_XXX2: /* pk_xxx2 k[2] x[k] */
fseek (pkfp, (long)NoSignExtend(pkfp,2), 1);
break;
case PK_XXX3: /* pk_xxx3 k[3] x[k] */
fseek (pkfp, (long)NoSignExtend(pkfp,3), 1);
break;
case PK_XXX4: /* pk_xxx4 k[4] x[4] */
fseek (pkfp, (long)SignExtend(pkfp,4), 1);
break;
case PK_YYY: /* pk_yyy y[4] */
(void) NoSignExtend(pkfp, 4);
break;
case PK_POST:
return TRUE;
case PK_PRE:
Warning("pk font file %s has extra PRE\n",
tfontptr->name);
fclose(tfontptr->font_file_id);
tfontptr->font_file_id = NO_FILE;
return TRUE;
default: /* do nothing */ ;
}
} else { /* flag byte */
switch (c & 0x07) { /* check flag byte */
case 0:/* short form */
case 1:
case 2:
case 3:
/* length */
pl = (long) NoSignExtend(pkfp, 1)
+ (long) ((c & 0x03) << 8);
cc = NoSignExtend(pkfp,1); /* char. code */
tfmw = NoSignExtend(pkfp,3); /* tfm width */
(void) NoSignExtend(pkfp,1); /* x-escapement */
tfontptr->ch[cc].width = NoSignExtend(pkfp, 1);
tfontptr->ch[cc].height = NoSignExtend(pkfp, 1);
tfontptr->ch[cc].xOffset = SignExtend(pkfp, 1);
tfontptr->ch[cc].yOffset = SignExtend(pkfp, 1);
addr = ftell (pkfp);
pl -= 8;
break;
case 4:/* extended short form */
case 5:
case 6:
pl = (long) NoSignExtend(pkfp, 2)
+ (long) ((c & 0x03) << 16);
cc = NoSignExtend(pkfp,1); /* char. code */
tfmw = NoSignExtend(pkfp,3); /* tfm width */
(void) NoSignExtend(pkfp,2); /* x-escapement */
tfontptr->ch[cc].width = NoSignExtend(pkfp, 2);
tfontptr->ch[cc].height = NoSignExtend(pkfp, 2);
tfontptr->ch[cc].xOffset = SignExtend(pkfp, 2);
tfontptr->ch[cc].yOffset = SignExtend(pkfp, 2);
addr = ftell (pkfp);
pl -= 13;
break;
case 7:/* long form */
pl = NoSignExtend(pkfp,4);
cc = NoSignExtend(pkfp,4); /* char. code */
tfmw = NoSignExtend(pkfp,4);
(void) NoSignExtend(pkfp,4); /* x-escapement */
tfontptr->ch[cc].width = NoSignExtend(pkfp, 4);
tfontptr->ch[cc].height = NoSignExtend(pkfp, 4);
tfontptr->ch[cc].xOffset = SignExtend(pkfp, 4);
tfontptr->ch[cc].yOffset = SignExtend(pkfp, 4);
addr = ftell (pkfp);
pl -= 24;
break;
}
tfontptr->ch[cc].tfmw = (int)(((double)tfmw * cscale) + 0.5);
tfontptr->ch[cc].where.isloaded = 0;
tfontptr->ch[cc].where.flags = c;
tfontptr->ch[cc].where.address.fileOffset = addr;;
fseek (pkfp, pl, 1); /* skip until next flag byte */
}
}
if((tfontptr->c != 0) && (checksum != 0) && (tfontptr->c != checksum))
Warning("Bad font checksum %d != %d; font %s.",
checksum, tfontptr->c, tfontptr->name);
return TRUE;
}
/**********************************************************************/
/**************************** ReadInt *******************************/
/**********************************************************************/
/* this routine is used to read in an integer from the stdin stream.
This routine is necessary since the terminal is running in
CBREAK mode and therefore will not do editing of the input
stream for one. */
ReadInt()
{
int value = 0;
int byte;
while ((byte = GetChar()) != /* tcb.t_brkc */ 10 && byte != 13)
{ if (byte >= 48 /* "0" */ && byte <= 57 /* "9" */)
value = value * 10 + byte - 48;
if (byte == tty.sg_erase) value = value / 10;
}
return(value);
}
/*-->ReadPostAmble*/
/**********************************************************************/
/************************** ReadPostAmble ***************************/
/**********************************************************************/
void
ReadPostAmble()
/***********************************************************************
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
/* lastpageptr = */ NoSignExtend(dvifp, 4);
num = NoSignExtend(dvifp, 4);
den = NoSignExtend(dvifp, 4);
mag = NoSignExtend(dvifp, 4);
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
GetFontDef ();
}
/*-->ResetTerm*/
/**********************************************************************/
/**************************** ResetTerm *****************************/
/**********************************************************************/
void
ResetTerm() /* Reset Terminal */
{
if (G_interactive)
ioctl(0, TIOCSETP, &G_intty); /* restore modes */
}
/*-->LoadAChar*/
/**********************************************************************/
/***************************** LoadAChar ****************************/
/**********************************************************************/
int buffer[8];
/*
* load a PK
character into memory.
*/
BOOLEAN
LoadAChar( ptr)
register struct char_entry *ptr;
{
register struct pixrect *pr;
int cw; /* character width */
int ch; /* character height */
u_int dyn_f; /* dynamic factor, part of a PK word. */
register int i, j;
register int black, bits, bp, rc;
int rowp;
if (ptr->where.address.fileOffset == 0) {
ptr->where.address.pixrectptr = NULL;
return;
}
OpenFontFile();
if (ptr->width == 0 || ptr->height == 0) {
ptr->where.address.pixrectptr = (struct pixrect *) 0;
return;
}
fseek(pkfp, (long)ptr->where.address.fileOffset, 0);
pr = mem_create(ptr->width, ptr->height, 1);
ptr->where.address.pixrectptr = pr;
cw = ptr->width; ch = ptr->height;
pr_rop(pr, 0, 0, cw, ch, PIX_CLR, NULL, 0, 0);
/*
* what remains is the data for the image. It can be packaged
* either as a run-encoding where successive values are the
* number of adjacent pixels to paint in the opposite color of
* the previous painting, or simply as a bitmap with no padding
* except (possibly) for the very last nybble to round up to a
* byte value.
*
* the data for the character is stored in successive bits with
* each new horizontal row at a long boundary. See the PXL
* file format.
*/
/*
* grab the dyn_f out of the flag for this character.
*/
dyn_f = (ptr->where.flags >> 4) & 0xf;
/*
* the data returned by calloc is zeroed; we depend on that
* because we only turn on bits that are supposed to be
* black.
*/
if (dyn_f == 14) {
/*
* we have a bitmap rather than a run-encoding.
*/
u_int buf;
bp = 0;
for (i=0; i < ch; i++) {
for (j=0; j<cw; j++) {
if(!(bp & 7))
buf = getc(pkfp);
pr_put(pr, j, i, (buf & bit_mask[bp&7])?1:0);
bp++;
}
}
} else {
bp = _pk_repeat = rc = rowp = 0;
black = ptr->where.flags & (1 << 3);
bits = cw * ch;
CLEAR_NYB;
while (bp < bits) {
GET_PACKED(j);
if (_pk_repeat != 0) {
rc = _pk_repeat;
rowp = bp / cw;
_pk_repeat = 0;
continue;
}
/*
* we have a run count in j.
*/
if (black) {
register int k,l,m;
l = bp / cw; /* starting row */
m = (bp + j) / cw; /* ending row */
k = bp % cw; /* start bit offset */
i = (bp + j) % cw; /* ending bit offset */
if (j <= cw && (k < i || i == 0)) {
/* we're changing less than a row */
pr_rop(pr, k, l, j, 1, PIX_SET,
NULL, 0, 0);
} else {
/* fill any fragment in the current row */
pr_rop(pr, k, l, cw-k, 1, PIX_SET,
NULL, 0, 0);
/* fill some number of full rows */
pr_rop(pr, 0, l+1, cw, (j-(cw-k))/cw, PIX_SET, NULL, 0, 0);
/* fill any fragment in the last row */
if (i)
pr_rop(pr, 0, m, i, 1, PIX_SET,
NULL, 0, 0);
}
}
bp += j;
/*
* if there's a repeat count and we hit the end of
* a row, do the copy.
*/
if (rc && (bp - (rowp*cw)) >= cw) {
i = rowp+1;
j = rowp+1+rc;
if ((i*cw) != bp) {
pr_rop(pr, 0, j, cw, 1, PIX_SRC,
pr, 0, i);
}
j = rc;
while(j--) {
pr_rop(pr, 0, i, cw, 1, PIX_SRC,
pr, 0, rowp);
i++;
}
bp += rc * cw;
rc = 0;
}
black = !black;
}
}
ptr->where.isloaded = TRUE;
}
/*-->SetChar*/
/**********************************************************************/
/***************************** SetChar ******************************/
/**********************************************************************/
void
SetChar(c, command)
int c, command;
{
register struct char_entry *ptr; /* temporary char_entry pointer */
#ifndef UCI
int k;
#endif
ptr = &(fontptr->ch[c]);
hh = PixRound(h, hconv);
vv = PixRound(v, vconv);
if (!ptr->where.isloaded) LoadAChar(ptr);
pr_rop(display, hh-ptr->xOffset-xscreen, vv-ptr->yOffset-yscreen, ptr->width, ptr->height, draw_mode, ptr->where.address.pixrectptr, 0, 0);
if (command <= SET4)
h += ptr->tfmw;
}
/*-->SetFntNum*/
/**********************************************************************/
/**************************** SetFntNum *****************************/
/**********************************************************************/
void
SetFntNum(k)
int k;
/* 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);
}
/*-->SetRule*/
/**********************************************************************/
/***************************** SetRule ******************************/
/**********************************************************************/
void
SetRule(a, b, Set)
int a, b;
BOOLEAN Set;
{ /* this routine will draw a rule on the screen */
int ehh, evv;
hh = PixRound(h, hconv);
vv = PixRound(v-a, vconv);
#ifndef UCI
ehh = PixRound(h + b, hconv);
evv = PixRound(v, vconv);
#else
#define rulepix(x, conv) (((x) + (conv)-1) / (conv))
ehh = rulepix(b, hconv) + hh;
evv = rulepix(a, vconv) + vv;
#endif UCI
if (hh == ehh) ehh++;
if (vv == evv) vv--;
if ((a > 0) && (b > 0))
pr_rop(display, hh-xscreen, vv-yscreen, ehh-hh, evv-vv, set_mode, NULL, 0, 0);
if (Set) {
h += b;
/* v += a; */
}
}
/*-->SkipFontDef*/
/**********************************************************************/
/**************************** SkipFontDef ***************************/
/**********************************************************************/
/* ARGSUSED */
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 ******************************/
/**********************************************************************/
/* VARARGS */
void
Warning(fmt, args) /* issue a warning */
char *fmt; /* format */
char *args; /* arguments */
{
if (G_logging == 0)
{
G_logfp=fopen(G_Logname,"w+");
G_logging = 1;
#ifndef UCI
if (G_logfp == NULL) G_logging = -1;
#else
if (G_logfp == NULL) {
G_logging = -1;
Fatal("Unable to open log file\n");
}
#endif UCI
}
G_errenc = TRUE;
if (G_logging == 1)
{
_doprnt(fmt, &args, G_logfp);
fprintf(G_logfp,"\n");
}
}