laser-lovers@uw-beaver (07/01/85)
From: Richard Furuta <Furuta@WASHINGTON.arpa>
This is the source to dvi2ps, which was described in an earlier
note to laser-lovers.
--Rick
# The rest of this file is a shell script which will extract:
# Description Makefile README changes.v1.02 commands.h dvi2ps.c dvi2ps.hlp tex.ps
echo x - Description
cat >Description <<'!Funky!Stuff!'
Dvi2ps is program the translates DVI files to PostScript (PostScript is a
trademark of Adobe Systems, Inc). When the output of dvi2ps is preceded by
about 2 pages of PostScript code, TeX output can be printed on PostScript
devices (such as an Apple LaserWriter).
It uses the TeX-compatible set of 300 dpi fonts, and downloads the bitmap
description of each character, once, as it is needed, for every job (i.e.,
resident fonts are not used). While this sounds expensive, it is not too
bad. After the conversion to PostScript is done, and considering "normal
documents" and 9600 baud communication, the first page can take a minute or
so to transmit and print. Thereafter, pages are usually printed faster.
Simple documents of 20 & 30 pages have printed at an overall average of
3.2 pages/minute (it is unlikely that you will ever get substantially
higher than this with the program as it currently stands). More typical
rates will be 2.5 pages/min. Conversion time is extra, of course, but
does not seem to be excessive.
Dvi2ps currently runs on Apollo (AEGIS) and Vax 4.2BSD machines (and shortly
Macintosh XL with MacWorks).
There are many problems:
1. It is not very clever about which fonts and characters to download on
a per-job basis, except that each character is sent only once, just before
it is needed. All character and fonts are then made resident on the printer
until the end of the job. This consumes more memory on the printer (at least
on the Apple LaserWriter) than is necessary, and can limit the size of the
job than can be printed. "Simple" 50 page documents can be printed
with room to spare (I suspect the limit is in the range of 70-100 pages for
these, but we haven't tried any that large yet). On the other hand,
a section out of the LaTeX test files (manual) that uses 30 or more
different fonts, some of them very large, was limited to 30 pages.
Dvi2ps has -from and -to options to extract ranges of pages.
2. The resulting PostScript files are very large (they can easily be 5 times
the size of the DVI file).
3. Character positioning is not calculated in the "official" dvitype manner,
and so there *might* be *VERY* small anomolies. However, care is taken,
and the result is quite acceptable (at least to many untrained eyes).
In fact, positioning is better than some other common processors, and
no anomolies have as yet been noticed.
In summary, it was quite easy to develop and will serve us well until something
better comes along.
!Funky!Stuff!
echo x - Makefile
cat >Makefile <<'!Funky!Stuff!'
#
# where are the bitmaps stored?
FONTAREA=/usr/lib/tex/fonts
CFLAGS = -fsingle -DFONTAREA=\"${FONTAREA}\" -O
all: dvi2ps
dvi2ps: dvi2ps.o
cc -o dvi2ps dvi2ps.o
dvi2ps.o: dvi2ps.c
cc -c ${CFLAGS} dvi2ps.c
!Funky!Stuff!
echo x - README
cat >README <<'!Funky!Stuff!'
The use of this program may not be readily apparent. If you are using
TranScript, and your printer's name is "ps", you would use a command
sequence that looked something like this:
% tex myfile
% dvi2ps myfile > myfile.ps
% cat tex.ps myfile.ps | lpr -Pps
The first few pages will print in a very very slow fashion while the fonts
are being defined. Printing speeds up a little as you get further down the
document.
(Notes added by Richard Furuta)
!Funky!Stuff!
echo x - changes.v1.02
cat >changes.v1.02 <<'!Funky!Stuff!'
Changes since v. 1.01:
----------------------
11-Jun-85 (nmh) - Spacing problems in long strings (demonstrated by
Les Earnest's "taste test" trial.
- changed to output char spacing width as a floating point number,
rather than as an integer rounded to pixels. This was causing problems
in spacings of long strings of characters - the truncation errors were
accumulating.
12-Jun-85 Changed to process DVI pages in reverse order. That way, they
come out stacked in correct order. Added "-r" option to defeat
this.
13-Jun-85 reduced size of arrays in PS dictionaries to 128 entries (saves
2K bytes in LaserWriter per font)
13-Jun-85 SetFntNum wasn't always getting called on first pass through
the DVI page (fixed at opcodes FNT1..FNT4).
If -p (no preload) option is given, we MUST process DVI pages in
forward order, thus this option forces "-r" option.
Changed help file for -r option.
With -p option (no preload), font files were getting loaded and
opened more often than necessary. added fn HasBeenRead().
Warn about ignored magnifications.
14-Jun-85 Changed to emit font-dictionary-creating command just before
the first character bitmap of that font gets output. This allows
more pages to be printed when you extract a subrange of the DVI
file, as fonts not referred to in thos pages will not be created.
I guess this also makes the -p option less (not?) necessary.
Added -m0, -mh, -m1, -m2, -m3, -m4 options to specify magnifications
in terms of magsteps.
17-Jun-85 In EmitChar() changed the following line:
sl = (unsigned char *)(ce.where.pixptr + i*nwpl);
to:
sl = (unsigned char *)(ce.where.address.pixptr + i*nwpl);
How did that ever work??!!??
In DecodeArgs(), removed call to tolower() -- replaced with direct code.
These two were from Furuta, and from compiling on Vax.
18-Jun-85 Was not handling missing fonts properly - would forget to create
a dictionary, then later would expect to make that forgotten dictionary
the current font. Fixed by adding code to completely ignore
characters pertaining to missing fonts (in SetFntNum(), SetChar(),
SetString()) -- the intent is to leave the proper size gaps in
the document.
19-Jun-85 Trivial change to the way hex values of bytes written. Got rid
of silly big table (a Lisa with MacWorks didn't build it correctly).
!Funky!Stuff!
echo x - commands.h
cat >commands.h <<'!Funky!Stuff!'
/*
*
* $Revision: 1.1 $
* $Log: commands.h,v $
* Revision 1.1 83/11/23 10:56:00 mds
* Initial revision
*
*
*/
#define SETC_000 0
#define SETC_001 1
#define SETC_002 2
#define SETC_003 3
#define SETC_004 4
#define SETC_005 5
#define SETC_006 6
#define SETC_007 7
#define SETC_008 8
#define SETC_009 9
#define SETC_010 10
#define SETC_011 11
#define SETC_012 12
#define SETC_013 13
#define SETC_014 14
#define SETC_015 15
#define SETC_016 16
#define SETC_017 17
#define SETC_018 18
#define SETC_019 19
#define SETC_020 20
#define SETC_021 21
#define SETC_022 22
#define SETC_023 23
#define SETC_024 24
#define SETC_025 25
#define SETC_026 26
#define SETC_027 27
#define SETC_028 28
#define SETC_029 29
#define SETC_030 30
#define SETC_031 31
#define SETC_032 32
#define SETC_033 33
#define SETC_034 34
#define SETC_035 35
#define SETC_036 36
#define SETC_037 37
#define SETC_038 38
#define SETC_039 39
#define SETC_040 40
#define SETC_041 41
#define SETC_042 42
#define SETC_043 43
#define SETC_044 44
#define SETC_045 45
#define SETC_046 46
#define SETC_047 47
#define SETC_048 48
#define SETC_049 49
#define SETC_050 50
#define SETC_051 51
#define SETC_052 52
#define SETC_053 53
#define SETC_054 54
#define SETC_055 55
#define SETC_056 56
#define SETC_057 57
#define SETC_058 58
#define SETC_059 59
#define SETC_060 60
#define SETC_061 61
#define SETC_062 62
#define SETC_063 63
#define SETC_064 64
#define SETC_065 65
#define SETC_066 66
#define SETC_067 67
#define SETC_068 68
#define SETC_069 69
#define SETC_070 70
#define SETC_071 71
#define SETC_072 72
#define SETC_073 73
#define SETC_074 74
#define SETC_075 75
#define SETC_076 76
#define SETC_077 77
#define SETC_078 78
#define SETC_079 79
#define SETC_080 80
#define SETC_081 81
#define SETC_082 82
#define SETC_083 83
#define SETC_084 84
#define SETC_085 85
#define SETC_086 86
#define SETC_087 87
#define SETC_088 88
#define SETC_089 89
#define SETC_090 90
#define SETC_091 91
#define SETC_092 92
#define SETC_093 93
#define SETC_094 94
#define SETC_095 95
#define SETC_096 96
#define SETC_097 97
#define SETC_098 98
#define SETC_099 99
#define SETC_100 100
#define SETC_101 101
#define SETC_102 102
#define SETC_103 103
#define SETC_104 104
#define SETC_105 105
#define SETC_106 106
#define SETC_107 107
#define SETC_108 108
#define SETC_109 109
#define SETC_110 110
#define SETC_111 111
#define SETC_112 112
#define SETC_113 113
#define SETC_114 114
#define SETC_115 115
#define SETC_116 116
#define SETC_117 117
#define SETC_118 118
#define SETC_119 119
#define SETC_120 120
#define SETC_121 121
#define SETC_122 122
#define SETC_123 123
#define SETC_124 124
#define SETC_125 125
#define SETC_126 126
#define SETC_127 127
#define SET1 128
#define SET2 129
#define SET3 130
#define SET4 131
#define SET_RULE 132
#define PUT1 133
#define PUT2 134
#define PUT3 135
#define PUT4 136
#define PUT_RULE 137
#define NOP 138
#define BOP 139
#define EOP 140
#define PUSH 141
#define POP 142
#define RIGHT1 143
#define RIGHT2 144
#define RIGHT3 145
#define RIGHT4 146
#define W0 147
#define W1 148
#define W2 149
#define W3 150
#define W4 151
#define X0 152
#define X1 153
#define X2 154
#define X3 155
#define X4 156
#define DOWN1 157
#define DOWN2 158
#define DOWN3 159
#define DOWN4 160
#define Y0 161
#define Y1 162
#define Y2 163
#define Y3 164
#define Y4 165
#define Z0 166
#define Z1 167
#define Z2 168
#define Z3 169
#define Z4 170
#define FONT_00 171
#define FONT_01 172
#define FONT_02 173
#define FONT_03 174
#define FONT_04 175
#define FONT_05 176
#define FONT_06 177
#define FONT_07 178
#define FONT_08 179
#define FONT_09 180
#define FONT_10 181
#define FONT_11 182
#define FONT_12 183
#define FONT_13 184
#define FONT_14 185
#define FONT_15 186
#define FONT_16 187
#define FONT_17 188
#define FONT_18 189
#define FONT_19 190
#define FONT_20 191
#define FONT_21 192
#define FONT_22 193
#define FONT_23 194
#define FONT_24 195
#define FONT_25 196
#define FONT_26 197
#define FONT_27 198
#define FONT_28 199
#define FONT_29 200
#define FONT_30 201
#define FONT_31 202
#define FONT_32 203
#define FONT_33 204
#define FONT_34 205
#define FONT_35 206
#define FONT_36 207
#define FONT_37 208
#define FONT_38 209
#define FONT_39 210
#define FONT_40 211
#define FONT_41 212
#define FONT_42 213
#define FONT_43 214
#define FONT_44 215
#define FONT_45 216
#define FONT_46 217
#define FONT_47 218
#define FONT_48 219
#define FONT_49 220
#define FONT_50 221
#define FONT_51 222
#define FONT_52 223
#define FONT_53 224
#define FONT_54 225
#define FONT_55 226
#define FONT_56 227
#define FONT_57 228
#define FONT_58 229
#define FONT_59 230
#define FONT_60 231
#define FONT_61 232
#define FONT_62 233
#define FONT_63 234
#define FNT1 235
#define FNT2 236
#define FNT3 237
#define FNT4 238
#define XXX1 239
#define XXX2 240
#define XXX3 241
#define XXX4 242
#define FNT_DEF1 243
#define FNT_DEF2 244
#define FNT_DEF3 245
#define FNT_DEF4 246
#define PRE 247
#define POST 248
#define POST_POST 249
!Funky!Stuff!
echo x - dvi2ps.c
cat >dvi2ps.c <<'!Funky!Stuff!'
#define VERSION "1.02"
/*
*
* AUTHOR(s)
* Mark Senn wrote the early versions of this program for the
* BBN BitGraph. Stephan Bechtolsheim, Bob Brown, Richard
* Furuta, James Schaad and Robert Wells improved it. Norm
* Hutchinson ported the program to the Sun. Neal Holtz ported
* it to the Apollo, and from there to producing PostScript
* output.
*
*/
/* Basic method:
* Using the local font cacheing machinery that was in the previewer,
* we can easily manage to send the bitmap for each chracter only once.
* Two passes are made over each page in the DVI file. The first pass
* simply outputs the bitmaps for all characters on that page that haven't
* been sent before. The second pass outputs all the character setting
* and positioning commands. This allows us to bracket the setting portion
* with PostScript save's and restore's, thus reclaiming considerable
* virtual memory after each page.
*
* All coordinates are output in the PostScript system (origin at lower
* left), and in integer units of "dots" (300/inch) -- except for character
* widths, which are sent as floating point numbers.
*
* About 2 pages of PostScript support code must be sent to the LaserWriter
* before this stuff goes. This program does NOT automatically include it.
*/
/* Change log:
*
* Early 1985, (nmh) -- ported sun version to Apollo.
* A little later (nmh) -- changed to continue on in the event of missing
* font files.
* 30-Mar-85 (nmh) -- added -a option to specify a different PXL area
* 30-Mar-85 (nmh) -- changed default PXL area to /pxl118
* 31-Mar-85 (nmh) -- fixed bug in OpenFontFile() regarding more than MAXOPEN
* PXL files -- changed to mark files as closed in font_entry.
* 7-Apr-85 (nmh) -- made command line argument decoding case insensitive.
* cleaned up handling of DVI file name argument.
* 30-May-85 (nmh) -- new version; hacked to output PostScript commands
* 6-Jun-85 (nmh) -- added relative positioning (20% smaller PostScript output)
* add -m option to specify mag
* 11-Jun-85 (nmh) -- fixed bug regarding char spacings in very long "words"
* 12-Jun-85 (nmh) -- v1.02 - process DVI pages in reverse order
* 13-Jun-85 (nmh) -- fixed bug re PXL files getting opened too often when no PreLoad
* 14-Jun-85 (nmh) -- font dict created in PostScript only when 1st char of font downloaded
* add -m0 -mh -m1 etc. to specify magsteps
*/
/**********************************************************************/
/************************ Global Definitions ************************/
/**********************************************************************/
/* This version purports to drive a PostScript device (slowly) */
typedef int BOOLEAN;
#define NEW(A) ((A *) malloc(sizeof(A)))
#define DEBUG 1 /* for massive printing of input */
/* trace information; select by -d */
/* option after filename: */
/* dviview filename -d */
#ifdef DEBUG
int Debug = 0;
#endif
/* to enable statistics reporting via -s option */
#define STATS
#define BINARYOPEN fopen /* byte-oriented host version */
#define ARITHRSHIFT 1 /* define if ">>" operator is a
sign-propagating arithmetic
right shift */
#define USEGLOBALMAG 1 /* when defined, the dvi global
magnification is applied */
/* We leave USEGLOBALMAG undefined because currently we have a limited
number font magnifications (at 300dpi) available and if it is
defined, any dvi file is as likely as not to fail */
#undef USEGLOBALMAG
/* define for "optimal" relative postioning, rather
than absolute. Relative can reduce size of postcript
output 20% (and reduce print time by almost as much */
#define USERELPOS 1
#define DVIFORMAT 2
#define FALSE 0
#define FIRSTPXLCHAR 0
#ifndef FONTAREA
#define FONTAREA "/local/tex/pxl300"
#endif
#define LASTPXLCHAR 127
#define MAXOPEN 50 /* limit on number of open PXL files */
#define NPXLCHARS 128
#define PXLID 1001
#define READ 4 /* for access() */
#define RESOLUTION 300
#define hconvRESOLUTION 300
#define vconvRESOLUTION 300
#define PTOP 3300
#define STACKSIZE 100
#define STRSIZE 257
#define TRUE 1
#define NONEXISTANT -1 /* offset for PXL files not found */
#define NOFILE (FILE *)-1
/**********************************************************************/
/*********************** external definitions ***********************/
/**********************************************************************/
#include "commands.h"
#include <signal.h>
#include <stdio.h>
#include <ctype.h>
char *getenv();
char *index();
char *malloc();
int free();
char *rindex();
char *sprintf();
char *strcpy();
/* output a formatted string */
#define EMIT printf
/* output a simple string */
#define EMITS(s) fputs(s,stdout)
/* output an escaped octal number */
#define EMITO(c) PutOct(c)
/* output a decimal integer */
#define EMITN(n) PutInt(n)
/* output a byte value in Hex */
#define EMITH(h) putchar(*(digit+((h>>4)&0xF))),\
putchar(*(digit+(h&0xF)))
/* output a single character */
#define EMITC(c) putchar(c)
/* output a scaled X dimension */
#define EMITX(x) PutInt(PixRound(x,hconv))
/* output a scaled Y dimension */
#define EMITY(y) PutInt(PixRound(y,vconv))
/* formatted i/o was killing us, so build some tables */
char *digit = "0123456789ABCDEF";
int dummyInt;
short dummyShort;
char dummyChar;
/**********************************************************************/
/************************* Global Procedures ************************/
/**********************************************************************/
/* Note: Global procedures are declared here in alphabetical order, with
those which do not return values typed "void". Their bodies occur in
alphabetical order following the main() procedure. The names are
kept unique in the first 6 characters for portability. */
void AbortRun();
float ActualFactor();
void AllDone();
FILE* BINARYOPEN();
void DecodeArgs();
void DoSpecial();
void EmitChar();
void Fatal();
void FindPostAmblePtr();
void GetBytes();
void GetFontDef();
int HasBeenRead();
void LoadRast();
void MoveDown();
void MoveOver();
int NoSignExtend(); /* see cautionary note in code, re arithmetic vs logical shifts */
void OpenFontFile();
int PixRound();
void PutInt();
int ReadFontDef();
void ReadPostAmble();
void SetChar();
void SetFntNum();
void SetPosn();
void SetRule();
void SetString();
int SignExtend(); /* see cautionary note in code, re arithmetic vs logical shifts */
void SkipFontDef();
void Warning();
/**********************************************************************/
/*********************** Font Data Structures ***********************/
/**********************************************************************/
struct char_entry { /* character entry */
unsigned short width, height;/* width and height in pixels */
short xOffset, yOffset; /* x offset and y offset in pixels */
struct {
int isloaded;
union {
int fileOffset;
long *pixptr; } address;
} where;
int tfmw; /* TFM width */
};
struct font_entry { /* font entry */
int k, c, s, d, a, l;
char n[STRSIZE]; /* FNT_DEF command parameters */
int font_space; /* computed from FNT_DEF s parameter */
int font_mag; /* computed from FNT_DEF s and d parameters */
char psname[STRSIZE]; /* PostScript name of the font */
char name[STRSIZE]; /* full name of PXL file */
FILE *font_file_id; /* file identifier (NOFILE if none) */
int magnification; /* magnification read from PXL file */
int designsize; /* design size read from PXL file */
struct char_entry ch[NPXLCHARS];/* character information */
struct font_entry *next;
int ncdl; /* # of different chars actually downloaded */
#ifdef STATS
int nbpxl; /* # of bytes of PXL data downloaded */
int ncts; /* total # of characters typeset */
#endif
};
struct pixel_list
{
FILE *pixel_file_id; /* file identifier */
int use_count; /* count of "opens" */
};
/**********************************************************************/
/************************* Global Variables *************************/
/**********************************************************************/
int FirstPage = -1000000; /* first page to print (uses count0) */
int LastPage = 1000000; /* last page to print */
int G_errenc = FALSE; /* has an error been encountered? */
char G_Logname[STRSIZE]; /* name of log file, if created */
int G_interactive = FALSE; /* is the program running interactively */
/* (i.e., standard output not redirected)? */
int G_logging = 0; /* Are we logging warning messages? */
int G_logfile = FALSE; /* Are these messages going to a log file? */
FILE *G_logfp; /* log file pointer (for errors) */
char G_progname[STRSIZE]; /* program name */
int hconv, vconv; /* converts DVI units to pixels */
int den; /* denominator specified in preamble */
FILE *dvifp = NULL; /* DVI file pointer */
int PreLoad = TRUE; /* preload the font descriptions? */
struct font_entry *prevfont=NULL; /* font_entry pointer, previous character */
struct font_entry *fontptr; /* font_entry pointer */
struct font_entry *hfontptr=NULL;/* font_entry pointer */
int h; /* current horizontal position */
int hh = 0; /* current h on device */
int v; /* current vertical position */
int vv = 0; /* current v on device */
int mag; /* magnification specified in preamble */
int nopen; /* number of open PXL files */
int num; /* numerator specified in preamble */
struct font_entry *pfontptr = NULL; /* previous font_entry pointer */
struct pixel_list pixel_files[MAXOPEN+1];
/* list of open PXL file identifiers */
long postambleptr; /* Pointer to the postamble */
FILE *pxlfp; /* PXL file pointer */
char *PXLpath; /* PXL path name for search */
long ppagep; /* previous page pointer */
int Reverse = TRUE; /* process DVI pages in reverse order ? */
#ifdef STATS
int Stats = FALSE; /* are we reporting stats ? */
int Snbpxl = 0; /* # of bytes of pixel data */
int Sonbpx = 0; /* "optimal" number of bytes of pixel data */
int Sndc = 0; /* # of different characters typeset */
int Stnc = 0; /* total # of chars typeset */
int Snbpx0, Sndc0, Stnc0; /* used for printing incremental changes per dvi page */
#endif STATS
int usermag = 0; /* user specified magnification */
/**********************************************************************/
/******************************* main *******************************/
/**********************************************************************/
main(argc, argv)
int argc;
char *argv[];
{
struct stack_entry { /* stack entry */
int h, v, w, x, y, z; /* what's on stack */
};
int command; /* current command */
int count[10]; /* the 10 counters at begining of each page */
long cpagep; /* current page pointer */
int Emitting = FALSE; /* are we outputting typsetting instructions? */
register int i; /* command parameter; loop index */
int k; /* temporary parameter */
char n[STRSIZE]; /* command parameter */
int PassNo = 0; /* which pass over the DVI page are we on? */
int SkipMode = FALSE; /* in skip mode flag */
int sp; /* stack pointer */
struct stack_entry stack[STACKSIZE]; /* stack */
int t; /* temporary */
char SpecialStr[STRSIZE]; /* "\special" strings */
register struct char_entry *tcharptr; /* temporary char_entry ptr*/
int val, val2; /* temporarys to hold command information*/
int w; /* current horizontal spacing */
int x; /* current horizontal spacing */
int y; /* current vertical spacing */
int z; /* current vertical spacing */
nopen = 0;
strcpy(G_progname, argv[0]);
PXLpath = FONTAREA; /* default font area */
DecodeArgs( argc, argv );
#ifdef apollo
set_sbrk_size( 2048*1024 );
#endif
if ((i = NoSignExtend(dvifp, 1)) != PRE) {
fprintf(stderr,"\n");
Fatal("%s: PRE doesn't occur first--are you sure this is a DVI file?\n\n",
G_progname);
}
i = SignExtend(dvifp, 1);
if (i != DVIFORMAT) {
fprintf(stderr,"\n");
Fatal("%s: DVI format = %d, can only process DVI format %d files\n\n",
G_progname, i, DVIFORMAT);
}
if (Reverse) {
ReadPostAmble(PreLoad);
fseek(dvifp, ppagep, 0);
}
else {
if (PreLoad) {
ReadPostAmble(TRUE);
fseek(dvifp, (long) 14, 0);
}
else {
num = NoSignExtend(dvifp, 4);
den = NoSignExtend(dvifp, 4);
mag = NoSignExtend(dvifp, 4);
if( usermag > 0 ) mag = usermag;
#ifndef USEGLOBALMAG
if( mag != 1000 ) fprintf(stderr, "Magnification of %d ignored.\n", mag);
#endif
hconv = DoConv(num, den, hconvRESOLUTION);
vconv = DoConv(num, den, vconvRESOLUTION);
}
k = NoSignExtend(dvifp, 1);
GetBytes(dvifp, n, k);
}
PassNo = 0;
while (TRUE)
switch (command=NoSignExtend(dvifp, 1)) {
case SET1:case SET2:case SET3:case SET4:
val = NoSignExtend(dvifp, command-SET1+1);
if (!SkipMode) SetChar(val, command, PassNo);
break;
case SET_RULE:
val = NoSignExtend(dvifp, 4);
val2 = NoSignExtend(dvifp, 4);
if (Emitting) SetRule(val, val2, 1);
break;
case PUT1:case PUT2:case PUT3:case PUT4:
val = NoSignExtend(dvifp,command-PUT1+1);
if (!SkipMode) SetChar(val, command, PassNo);
break;
case PUT_RULE:
val = NoSignExtend(dvifp, 4);
val2 = NoSignExtend(dvifp, 4);
if (Emitting) SetRule(val, val2, 0);
break;
case NOP:
break;
case BOP:
cpagep = ftell(dvifp) - 1;
for (i=0; i<=9; i++)
count[i] = NoSignExtend(dvifp, 4);
ppagep = NoSignExtend(dvifp, 4);
h = v = w = x = y = z = 0;
hh = vv = 0;
sp = 0;
fontptr = NULL;
prevfont = NULL;
if( count[0] < FirstPage || count[0] > LastPage )
SkipMode = TRUE;
else
SkipMode = FALSE;
Emitting = (PassNo != 0) & !SkipMode;
if( !SkipMode ) {
if( PassNo == 0) {
EMIT("%d @bop0\n", count[0]);
#ifdef STATS
if( Stats ) {
Sndc0 = Sndc;
Stnc0 = Stnc;
Snbpx0 = Snbpxl;
}
else
#endif
if( (count[0] % 10) == 1 ) fprintf(stderr,"\n");
fprintf(stderr, "[%d", count[0] );
}
else
EMIT("%d @bop1\n", count[0]);
}
break;
case EOP:
if( !SkipMode ) {
if( PassNo == 0 ) { /* start second pass on current page */
fseek(dvifp,cpagep,0);
PassNo = 1;
}
else { /* end of second pass, and of page processing */
EMIT("@eop\n");
#ifdef STATS
if( Stats )
fprintf(stderr," - %d total ch, %d diff ch, %d pxl bytes]\n",
Stnc-Stnc0, Sndc-Sndc0, Snbpxl-Snbpx0);
else
#endif
fprintf(stderr,"] ");
PassNo = 0;
}
}
else
PassNo = 0;
if( PassNo == 0 && Reverse ) {
if( ppagep > 0 )
fseek(dvifp, ppagep, 0);
else
AllDone();
}
break;
case PUSH:
if (sp >= STACKSIZE)
Fatal("stack overflow");
stack[sp].h = h;
stack[sp].v = v;
stack[sp].w = w;
stack[sp].x = x;
stack[sp].y = y;
stack[sp].z = z;
sp++;
break;
case POP:
--sp;
if (sp < 0)
Fatal("stack underflow");
h = stack[sp].h;
v = stack[sp].v;
w = stack[sp].w;
x = stack[sp].x;
y = stack[sp].y;
z = stack[sp].z;
break;
case RIGHT1:case RIGHT2:case RIGHT3:case RIGHT4:
val = SignExtend(dvifp,command-RIGHT1+1);
if (Emitting) MoveOver(val);
break;
case W0:
if (Emitting) MoveOver(w);
break;
case W1:case W2:case W3:case W4:
w = SignExtend(dvifp,command-W1+1);
if (Emitting) MoveOver(w);
break;
case X0:
if (Emitting) MoveOver(x);
break;
case X1:case X2:case X3:case X4:
x = SignExtend(dvifp,command-X1+1);
if (Emitting) MoveOver(x);
break;
case DOWN1:case DOWN2:case DOWN3:case DOWN4:
val = SignExtend(dvifp,command-DOWN1+1);
if (Emitting) MoveDown(val);
break;
case Y0:
if (Emitting) MoveDown(y);
break;
case Y1:case Y2:case Y3:case Y4:
y = SignExtend(dvifp,command-Y1+1);
if (Emitting) MoveDown(y);
break;
case Z0:
if (Emitting) MoveDown(z);
break;
case Z1:case Z2:case Z3:case Z4:
z = SignExtend(dvifp,command-Z1+1);
if (Emitting) MoveDown(z);
break;
case FNT1:case FNT2:case FNT3:case FNT4:
if (!SkipMode) {
SetFntNum(NoSignExtend(dvifp,command-FNT1+1), Emitting);
}
break;
case XXX1:case XXX2:case XXX3:case XXX4:
k = NoSignExtend(dvifp,command-XXX1+1);
GetBytes(dvifp, SpecialStr, k);
if(Emitting) DoSpecial(SpecialStr, k);
break;
case FNT_DEF1:case FNT_DEF2:case FNT_DEF3:case FNT_DEF4:
k = NoSignExtend(dvifp, command-FNT_DEF1+1);
if (PreLoad || HasBeenRead(k) )
{
SkipFontDef (k);
}
else
{
ReadFontDef (k);
}
break;
case PRE:
Fatal("PRE occurs within file");
break;
case POST:
AllDone();
break;
case POST_POST:
Fatal("POST_POST with no preceding POST");
break;
default:
if (command >= FONT_00 && command <= FONT_63)
{if (!SkipMode)
SetFntNum(command - FONT_00, Emitting);}
else if (command >= SETC_000 && command <= SETC_127)
{if (!SkipMode) SetString(command, PassNo);}
else
Fatal("%d is an undefined command", command);
break;
}
}
/*-->AbortRun*/
/**********************************************************************/
/*************************** AbortRun *******************************/
/**********************************************************************/
void
AbortRun(code)
int code;
{
exit(code);
}
/*-->ActualFactor*/
/**********************************************************************/
/************************** ActualFactor ****************************/
/**********************************************************************/
float /* compute the actual size factor given the approximation */
ActualFactor(unmodsize)
int unmodsize; /* actually factor * 1000 */
{
float realsize; /* the actual magnification factor */
realsize = (float)unmodsize / 1000.0;
/* a real hack to correct for rounding in some cases--rkf */
if(unmodsize==1095) realsize = 1.095445; /*stephalf*/
else if(unmodsize==1315) realsize=1.314534; /*stepihalf*/
else if(unmodsize==2074) realsize=2.0736; /*stepiv*/
else if(unmodsize==2488) realsize=2.48832; /*stepv*/
else if(unmodsize==2986) realsize=2.985984; /*stepiv*/
/* the remaining magnification steps are represented with sufficient
accuracy already */
return(realsize);
}
/*-->AllDone*/
/**********************************************************************/
/****************************** AllDone ******************************/
/**********************************************************************/
void
AllDone()
{
char t;
struct font_entry *p;
EMIT("@end\n");
fprintf(stderr,"\n");
if (G_errenc && G_logging == 1 && G_logfile) {
fseek(G_logfp, 0, 0);
while ((t=getc(G_logfp)) != EOF)
putchar(t);
}
if (G_logging == 1 && G_logfile) printf("Log file created\n");
#ifdef STATS
if (Stats) {
for( p=hfontptr; p!=NULL; p=p->next )
fprintf(stderr, "%s - %d total ch, %d diff ch, %d pxl bytes\n",
p->psname, p->ncts, p->ncdl, p->nbpxl );
fprintf(stderr, "\nTotal number of characters typeset: %d\n", Stnc);
fprintf(stderr, "Number of different characters downloaded: %d\n", Sndc);
fprintf(stderr, "Number of bytes of pxl data downloaded: %d\n", Snbpxl);
fprintf(stderr, "Optimal # of bytes of pxl data: %d\n", Sonbpx);
}
#endif
AbortRun(G_errenc);
}
/*-->DecodeArgs*/
/*********************************************************************/
/***************************** DecodeArgs ****************************/
/*********************************************************************/
void
DecodeArgs( argc, argv )
int argc;
char *argv[];
{
int argind; /* argument index for flags */
char curarea[STRSIZE]; /* current file area */
char curname[STRSIZE]; /* current file name */
char filename[STRSIZE]; /* file name */
char *tcp, *tcp1; /* temporary character pointers */
argind = 1;
while (argind < argc) {
tcp = argv[argind];
if (*tcp == '-')
switch(isupper(*++tcp) ? (*tcp-'A')+'a' : *tcp) {
#ifdef DEBUG
case 'd': /* d selects Debug output */
Debug = TRUE;
break;
#endif
case 'l': /* l prohibits logging of errors */
G_logging = -1;
break;
case 'p': /* p prohibits pre-font loading */
PreLoad = 0;
Reverse = FALSE; /* must then process in forward order */
break;
case 'a': /* a selects different pxl font area */
PXLpath = argv[++argind];
break;
case 'f': /* next arg is starting pagenumber */
if( ++argind >= argc || sscanf(argv[argind], "%d", &FirstPage) != 1 )
Fatal("Argument is not a valid integer\n", 0);
break;
case 't': /* next arg is ending pagenumber */
if( ++argind >= argc || sscanf(argv[argind], "%d", &LastPage) != 1 )
Fatal("Argument is not a valid integer\n", 0);
break;
#ifdef USEGLOBALMAG
case 'm': /* specify magnification to use */
switch( tolower(*++tcp) ) {
case '\0': /* next arg is a magnification to use */
if( ++argind >= argc || sscanf(argv[argind], "%d", &usermag) != 1 )
Fatal("Argument is not a valid integer\n", 0);
break;
case '0': usermag = 1000; break;
case 'h': usermag = 1095; break;
case '1': usermag = 1200; break;
case '2': usermag = 1440; break;
case '3': usermag = 1728; break;
case '4': usermag = 2074; break;
default: Fatal("%c is a bad mag step\n", *tcp);
}
break;
#endif
case 'r':
Reverse = FALSE;
break;
#ifdef STATS
case 's':
Stats = TRUE;
break;
#endif
default:
printf("%c is not a legal flag\n", *tcp);
}
else {
tcp = rindex(argv[argind], '/'); /* split into directory + file name */
if (tcp == NULL) {
curarea[0] = '\0';
tcp = argv[argind];
}
else {
strcpy(curarea, argv[argind]);
curarea[tcp-argv[argind]+1] = '\0';
tcp += 1;
}
strcpy(curname, tcp);
tcp1 = rindex(tcp, '.'); /* split into file name + extension */
if (tcp1 == NULL)
strcat(curname, ".dvi");
strcpy(filename, curarea);
strcat(filename, curname);
if ((dvifp=BINARYOPEN(filename,"r")) == NULL) {
fprintf(stderr,"\n");
fprintf(stderr,"%s: can't find DVI file \"%s\"\n\n", G_progname, filename);
AbortRun(1);
}
strcpy(G_Logname, curname);
strcat(G_Logname, ".log");
}
argind++;
}
if (dvifp == NULL) {
fprintf(stderr,
"\nusage: %s [-p] [-s] [-r] [-f n] [-t n] [-m{0|h|1|2|3|4| mag] [-a fontarea] dvifile\n\n",
G_progname);
AbortRun(1);
}
}
/*-->DoConv*/
/*********************************************************************/
/******************************** DoConv ***************************/
/*********************************************************************/
int DoConv(num, den, convResolution)
{
register float conv;
conv = ((float)num/(float)den) *
#ifdef USEGLOBALMAG
/* ActualFactor(mag) * why was this in as Actual Factor? jls */
((float) mag/1000.0) *
#endif
((float)convResolution/254000.0);
return((int) (1.0 / conv + 0.5));
}
/*-->DoSpecial*/
/*********************************************************************/
/***************************** DoSpecial ***************************/
/*********************************************************************/
void
DoSpecial( str, n ) /* copy special file straight through */
char str[];
int n;
{
FILE *spfp;
char t;
str[n] = '\0';
if( (spfp=fopen(str,"r")) == NULL ) {
fprintf(stderr,"Unable to open special file %d\n", str );
return;
}
fprintf(stderr," [%s", str);
SetPosn(h, v);
EMITS("@beginspecial\n");
while( (t = getc(spfp)) != EOF ) {
EMITC(t);
}
EMITS("@endspecial\n");
fclose(spfp);
fprintf(stderr,"]");
}
/*-->EmitChar*/
/**********************************************************************/
/**************************** EmitChar ******************************/
/**********************************************************************/
void
EmitChar(c, ce) /* output a character bitmap */
int c;
struct char_entry *ce;
{
int i;
register int j;
register unsigned char *sl;
register int cc;
int nbpl, nwpl;
float cw; /* char width, in "dots" - we rely on PostScript maintaining sufficient accuracy */
/* Output in PostScript coord system (y +ive up, x +ive right)
(0,0) of char bitmap at lower left. Output scan lines
from bottom to top */
if( fontptr->ncdl == 0 ) /* open font dict before first char */
EMIT("[ %d ] /%s @newfont\n", fontptr->font_mag, fontptr->psname );
if( fontptr != prevfont ) { /* because this isn't done on pass 0 */
EMIT("%s @sf\n", fontptr->psname);
prevfont = fontptr;
}
EMITS("[<");
cc = 2;
nbpl = (ce->width + 7) >> 3;
nwpl = (ce->width + 31) >> 5;
for(i = ce->height-1; i >= 0; i--) {
sl = (unsigned char *)(ce->where.address.pixptr + i*nwpl);
for(j = 0; j < nbpl; j++, sl++) {
if( cc > 100 ) {
EMITS("\n "); cc = 2; }
EMITH(*sl);
cc += 2;
}
}
cw = (float)ce->tfmw / (float)hconv;
EMIT("> %d %d %d %d %.3f] %d @dc\n",
nbpl<<3, ce->height, ce->xOffset, (((int)ce->height)-ce->yOffset)-1, cw,
c);
fontptr->ncdl += 1;
#ifdef STATS
Snbpxl += nbpl*ce->height;
fontptr->nbpxl += nbpl*ce->height;
Sonbpx += (ce->width*ce->height + 7) >> 3;
Sndc += 1;
#endif
}
/*-->Fatal*/
/**********************************************************************/
/****************************** Fatal *******************************/
/**********************************************************************/
void
Fatal(fmt, a, b, c)/* issue a fatal error message */
char *fmt; /* format */
char *a, *b, *c; /* arguments */
{
if (G_logging == 1 && G_logfile)
{
fprintf(G_logfp, "%s: FATAL--", G_progname);
fprintf(G_logfp, fmt, a, b, c);
fprintf(G_logfp, "\n");
}
fprintf(stderr,"\n");
fprintf(stderr, "%s: FATAL--", G_progname);
fprintf(stderr, fmt, a, b, c);
fprintf(stderr, "\n\n");
if (G_logging == 1) printf("Log file created\n");
AbortRun(1);
}
/*-->FindPostAmblePtr*/
/**********************************************************************/
/************************ FindPostAmblePtr **************************/
/**********************************************************************/
void
FindPostAmblePtr(postambleptr)
long *postambleptr;
/* this routine will move to the end of the file and find the start
of the postamble */
{
int i;
fseek (dvifp, (long) 0, 2); /* goto end of file */
*postambleptr = ftell (dvifp) - 4;
fseek (dvifp, *postambleptr, 0);
while (TRUE) {
fseek (dvifp, --(*postambleptr), 0);
if (((i = NoSignExtend(dvifp, 1)) != 223) &&
(i != DVIFORMAT))
Fatal ("Bad end of DVI file");
if (i == DVIFORMAT)
break;
}
fseek (dvifp, (*postambleptr) - 4, 0);
(*postambleptr) = NoSignExtend(dvifp, 4);
fseek (dvifp, *postambleptr, 0);
}
/*-->GetBytes*/
/**********************************************************************/
/***************************** GetBytes *****************************/
/**********************************************************************/
void
GetBytes(fp, cp, n) /* get n bytes from file fp */
register FILE *fp; /* file pointer */
register char *cp; /* character pointer */
register int n; /* number of bytes */
{
while (n--)
*cp++ = getc(fp);
}
/*-->GetFontDef*/
/**********************************************************************/
/**************************** GetFontDef *****************************/
/**********************************************************************/
void
GetFontDef()
/***********************************************************************
Read the font definitions as they are in the postamble of the DVI
file.
***********************************************************************/
{
char str[50], *calloc ();
unsigned char byte;
int i, fnamelen;
while (((byte = NoSignExtend(dvifp, 1)) >= FNT_DEF1) &&
(byte <= FNT_DEF4)) {
switch (byte) {
case FNT_DEF1:
ReadFontDef (NoSignExtend(dvifp, 1));
break;
case FNT_DEF2:
ReadFontDef (NoSignExtend(dvifp, 2));
break;
case FNT_DEF3:
ReadFontDef (NoSignExtend(dvifp, 3));
break;
case FNT_DEF4:
ReadFontDef (NoSignExtend(dvifp, 4));
break;
default:
Fatal ("Bad byte value in font defs");
break;
}
}
if (byte != POST_POST)
Fatal ("POST_POST missing after fontdefs");
}
/*-->HasBeenRead*/
/**********************************************************************/
/*************************** HasBeenRead ****************************/
/**********************************************************************/
int
HasBeenRead(k)
int k;
{
struct font_entry *ptr;
ptr = hfontptr;
while ((ptr!=NULL) && (ptr->k!=k))
ptr = ptr->next;
return( ptr != NULL );
}
/*-->MoveDown*/
/**********************************************************************/
/**************************** MoveDown ******************************/
/**********************************************************************/
void
MoveDown(a)
int a;
{
v += a;
}
/*-->MoveOver*/
/**********************************************************************/
/**************************** MoveOver ******************************/
/**********************************************************************/
void
MoveOver(b)
int b;
{
h += b;
}
/*-->NoSignExtend*/
/**********************************************************************/
/*************************** NoSignExtend ***************************/
/**********************************************************************/
int
NoSignExtend(fp, n) /* return n byte quantity from file fd */
register FILE *fp; /* file pointer */
register int n; /* number of bytes */
{
register int x; /* number being constructed */
x = 0;
while (n--) {
x <<= 8;
x |= getc(fp);
}
return(x);
}
/*-->OpenFontFile*/
/**********************************************************************/
/************************** OpenFontFile *****************************/
/**********************************************************************/
void
OpenFontFile()
/***********************************************************************
The original version of this dvi driver reopened the font file each
time the font changed, resulting in an enormous number of relatively
expensive file openings. This version keeps a cache of up to
MAXOPEN open files, so that when a font change is made, the file
pointer, pxlfp, can usually be updated from the cache. When the
file is not found in the cache, it must be opened. In this case,
the next empty slot in the cache is assigned, or if the cache is
full, the least used font file is closed and its slot reassigned for
the new file. Identification of the least used file is based on the
counts of the number of times each file has been "opened" by this
routine. On return, the file pointer is always repositioned to the
beginning of the file.
***********************************************************************/
{
register int i,least_used,current;
#ifdef DEBUG
if (Debug) printf("Open Font file\n");
#endif
if (pfontptr == fontptr)
return; /* we need not have been called */
for (current = 1;
(current <= nopen) &&
(pixel_files[current].pixel_file_id != fontptr->font_file_id);
++current)
; /* try to find file in open list */
if (current <= nopen) /* file already open */
{
if( (pxlfp = pixel_files[current].pixel_file_id) != NOFILE )
fseek(pxlfp,0,0); /* reposition to start of file */
}
else /* file not in open list */
{
if (nopen < MAXOPEN) /* just add it to list */
current = ++nopen;
else /* list full -- find least used file, */
{ /* close it, and reuse slot for new file */
least_used = 1;
for (i = 2; i <= MAXOPEN; ++i)
if (pixel_files[least_used].use_count >
pixel_files[i].use_count)
least_used = i;
if (pixel_files[least_used].pixel_file_id != NOFILE) {
FILE *fid;
struct font_entry *fp;
fid = pixel_files[least_used].pixel_file_id;
fp=hfontptr; /* mark file as being closed in the entry */
while (fp!=NULL && fp->font_file_id != fid)
fp = fp->next;
if (fp==NULL)
Fatal("Open file %x not found in font entry list.\n", fid);
else {
fp->font_file_id = NULL;
#ifdef STATS
if (Stats)
fprintf(stderr, "PXL file %s closed.\n", fp->name);
#endif STATS
}
fclose( fid );
}
current = least_used;
}
if ((pxlfp=BINARYOPEN(fontptr->name,"r")) == NULL) {
Warning("PXL file %s could not be opened",fontptr->name);
pxlfp = NOFILE;
}
else {
#ifdef STATS
if (Stats)
fprintf(stderr, "PXL file %s opened.\n", fontptr->name);
#endif STATS
}
pixel_files[current].pixel_file_id = pxlfp;
pixel_files[current].use_count = 0;
}
pfontptr = fontptr; /* make previous = current font */
fontptr->font_file_id = pxlfp; /* set file identifier */
pixel_files[current].use_count++; /* update reference count */
}
/*-->PixRound*/
/**********************************************************************/
/***************************** PixRound *****************************/
/**********************************************************************/
int
PixRound(x, conv) /* return rounded number of pixels */
register int x; /* in DVI units */
int conv; /* conversion factor */
{
return((int)((x + (conv >> 1)) / conv));
}
/*-->PutInt*/
/**********************************************************************/
/***************************** PutInt *******************************/
/**********************************************************************/
void
PutInt(n) /* output an integer followed by a space */
register int n;
{
char buf[10];
register char *b;
if( n == 0 )
EMITC('0');
else {
if( n < 0 ) {
EMITC('-');
n = -n;
}
for(b=buf; n>0; ) {
*b++ = digit[n%10];
n /= 10;
}
for( ; b>buf; )
EMITC(*--b);
}
EMITC(' ');
}
/*-->PutOct*/
/**********************************************************************/
/***************************** PutOct *******************************/
/**********************************************************************/
void
PutOct(n) /* output an 3 digit octal number preceded by a "\" */
register int n;
{
EMITC( '\\' );
EMITC( digit[(n&0300)>>6] );
EMITC( digit[(n&0070)>>3] );
EMITC( digit[n&0007] );
}
/*-->ReadFontDef*/
/**********************************************************************/
/**************************** ReadFontDef ***************************/
/**********************************************************************/
int
ReadFontDef(k)
int k;
{
int t, i;
register struct font_entry *tfontptr; /* temporary font_entry pointer */
register struct char_entry *tcharptr;/* temporary char_entry pointer */
char *direct, *tcp, *tcp1;
int found;
char curarea[STRSIZE];
if ((tfontptr = NEW(struct font_entry)) == NULL)
Fatal("can't malloc space for font_entry");
tfontptr->next = hfontptr;
tfontptr->font_file_id = NULL;
fontptr = hfontptr = tfontptr;
tfontptr->ncdl = 0;
#ifdef STATS
tfontptr->nbpxl = 0;
tfontptr->ncts = 0;
#endif
tfontptr->k = k;
tfontptr->c = NoSignExtend(dvifp, 4); /* checksum */
tfontptr->s = NoSignExtend(dvifp, 4); /* space size */
tfontptr->d = NoSignExtend(dvifp, 4); /* design size */
tfontptr->a = NoSignExtend(dvifp, 1); /* area length for font name */
tfontptr->l = NoSignExtend(dvifp, 1); /* device length */
GetBytes(dvifp, tfontptr->n, tfontptr->a+tfontptr->l);
tfontptr->n[tfontptr->a+tfontptr->l] = '\0';
tfontptr->font_space = tfontptr->s/6; /* never used */
tfontptr->font_mag = (int)((ActualFactor((int)(((float)tfontptr->s/
(float)tfontptr->d)*1000.0 + 0.5)) *
#ifdef USEGLOBALMAG
ActualFactor(mag) *
#endif
(float)RESOLUTION * 5.0) + 0.5);
sprintf(tfontptr->psname, "%s.%d", tfontptr->n, tfontptr->font_mag);
if (tfontptr->a != 0) {
sprintf(tfontptr->name, "%s.%dpxl", tfontptr->n, tfontptr->font_mag);
} else {
direct = PXLpath;
found = FALSE;
do {
tcp = index(direct, ':');
if (tcp == NULL) tcp = strlen(direct) + direct;
strncpy(curarea, direct, tcp-direct);
tcp1 = curarea + (tcp - direct);
*tcp1++ = '/';
*tcp1++ = '\0';
sprintf(tfontptr->name, "%s%s.%dpxl", curarea, tfontptr->n, tfontptr->font_mag);
found = (access(tfontptr->name, READ) == 0);
if (*tcp) direct = tcp + 1; else direct = tcp;
} while ( !found && *direct != '\0');
}
if (tfontptr != pfontptr)
OpenFontFile();
if ( pxlfp == NOFILE ) { /* allow missing pxl files */
tfontptr->magnification = 0;
tfontptr->designsize = 0;
for (i = FIRSTPXLCHAR; i <= LASTPXLCHAR; i++) {
tcharptr = &(tfontptr->ch[i]);
tcharptr->width = 0;
tcharptr->height = 0;
tcharptr->xOffset= 0;
tcharptr->yOffset = 0;
tcharptr->where.isloaded = FALSE;
tcharptr->where.address.fileOffset = NONEXISTANT;
tcharptr->tfmw = 0;
}
return;
}
if ((t = NoSignExtend(pxlfp, 4)) != PXLID)
Fatal("PXL ID = %d, can only process PXL ID = %d files",
t, PXLID);
fseek(pxlfp, -20, 2);
t = NoSignExtend(pxlfp, 4);
if ((tfontptr->c != 0) && (t != 0) && (tfontptr->c != t))
Warning("font = \"%s\",\n-->font checksum = %d,\n-->dvi checksum = %d",
tfontptr->name, tfontptr->c, t);
tfontptr->magnification = NoSignExtend(pxlfp, 4);
tfontptr->designsize = NoSignExtend(pxlfp, 4);
fseek(pxlfp, NoSignExtend(pxlfp, 4) * 4, 0);
for (i = FIRSTPXLCHAR; i <= LASTPXLCHAR; i++) {
tcharptr = &(tfontptr->ch[i]);
tcharptr->width = NoSignExtend(pxlfp, 2);
tcharptr->height = NoSignExtend(pxlfp, 2);
tcharptr->xOffset= SignExtend(pxlfp, 2);
tcharptr->yOffset = SignExtend(pxlfp, 2);
tcharptr->where.isloaded = FALSE;
tcharptr->where.address.fileOffset = NoSignExtend(pxlfp, 4) * 4;
tcharptr->tfmw = ((float)NoSignExtend(pxlfp, 4)*(float)tfontptr->s) /
(float)(1<<20);
}
}
/*-->ReadPostAmble*/
/**********************************************************************/
/************************** ReadPostAmble ***************************/
/**********************************************************************/
void
ReadPostAmble(load)
int load;
/***********************************************************************
This routine is used to read in the postamble values. It
initializes the magnification and checks the stack height prior to
starting printing the document.
***********************************************************************/
{
FindPostAmblePtr (&postambleptr);
if (NoSignExtend(dvifp, 1) != POST)
Fatal ("POST missing at head of postamble");
#ifdef DEBUG
if (Debug) fprintf (stderr, "got POST command\n");
#endif
ppagep = NoSignExtend(dvifp, 4);
num = NoSignExtend(dvifp, 4);
den = NoSignExtend(dvifp, 4);
mag = NoSignExtend(dvifp, 4);
if( usermag > 0 ) mag = usermag;
#ifndef USEGLOBALMAG
if( mag != 1000 ) fprintf(stderr, "Magnification of %d ignored.\n", mag);
#endif
hconv = DoConv(num, den, hconvRESOLUTION);
vconv = DoConv(num, den, vconvRESOLUTION);
NoSignExtend(dvifp, 4); /* height-plus-depth of tallest page */
NoSignExtend(dvifp, 4); /* width of widest page */
if (NoSignExtend(dvifp, 2) >= STACKSIZE)
Fatal ("Stack size is too small");
NoSignExtend(dvifp, 2); /* this reads the number of pages in */
/* the DVI file */
#ifdef DEBUG
if (Debug) fprintf (stderr, "now reading font defs");
#endif
if (load) GetFontDef ();
}
/*-->SetChar*/
/**********************************************************************/
/***************************** SetChar ******************************/
/**********************************************************************/
int buffer[8];
LoadAChar(c, ptr)
int c;
register struct char_entry *ptr;
{
long *pr;
register int nints;
if (ptr->where.address.fileOffset == NONEXISTANT) {
ptr->where.address.pixptr = NULL;
ptr->where.isloaded = TRUE;
return;
}
OpenFontFile();
fseek(pxlfp, ptr->where.address.fileOffset, 0);
nints = ((ptr->width + 31) >> 5) * ptr->height;
if( (pr = (long *)malloc( nints*sizeof(long) )) == NULL )
Fatal("Unable to allocate memory for char\n");
fread(pr, 4, nints, pxlfp);
ptr->where.address.pixptr = pr;
ptr->where.isloaded = TRUE;
EmitChar(c, ptr);
/* we should really free the space used by the PXL data after this
point, but it is not large, and besides, we may want to be
more clever in the future, about sending bitmaps. So keep
the data around */
}
void
SetChar(c, command, PassNo)
int c, command, PassNo;
{
register struct char_entry *ptr; /* temporary char_entry pointer */
int k;
ptr = &(fontptr->ch[c]);
if (!ptr->where.isloaded) LoadAChar(c, ptr);
if (PassNo==0) return;
SetPosn(h,v);
if (fontptr->font_file_id != NOFILE) { /* ignore missing fonts */
EMITN(c); EMITS("c\n");
hh += ptr->tfmw;
}
if (command <= SET4)
h += ptr->tfmw;
#ifdef STATS
Stnc += 1;
fontptr->ncts += 1;
#endif
}
/*-->SetFntNum*/
/**********************************************************************/
/**************************** SetFntNum *****************************/
/**********************************************************************/
void
SetFntNum(k, Emitting)
int k, Emitting;
/* this routine is used to specify the font to be used in printing future
characters */
{
fontptr = hfontptr;
while ((fontptr!=NULL) && (fontptr->k!=k))
fontptr = fontptr->next;
if (fontptr == NULL)
Fatal("font %d undefined", k);
if (Emitting && (fontptr->font_file_id != NOFILE) )
EMIT("%s @sf\n", fontptr->psname);
}
/*-->SetPosn*/
/**********************************************************************/
/***************************** SetPosn ******************************/
/**********************************************************************/
void
SetPosn(x, y) /* output a positioning command */
int x, y;
{
int rx,ry;
#ifdef USERELPOS
if (y == vv) { /* use relative movement if just moving horizontally */
if ( x != hh ) {
EMITN(rx=PixRound(x-hh,hconv));
EMITS("r ");
hh += rx*hconv;
}
}
else {
#endif USERELPOS
EMITN(rx=PixRound(x,hconv));
EMITN(PTOP-(ry=PixRound(y,vconv)));
EMITS("p ");
hh = rx*hconv; /* must know where device "really" is horizontally, for rel. posning. */
vv = y; /* but we always use direct positioning for vertical movement */
#ifdef USERELPOS
}
#endif USERELPOS
}
/*-->SetRule*/
/**********************************************************************/
/***************************** SetRule ******************************/
/**********************************************************************/
void
SetRule(a, b, Set)
int a, b;
BOOLEAN Set;
{ /* this routine will draw a rule */
if( a > 0 && b > 0 ) {
SetPosn(h,v); /* lower left corner */
EMITN(PixRound(b,hconv)); /* width */
EMITN(PixRound(a,vconv)); /* height */
EMITS("ru\n");
}
if (Set)
h += b;
}
/*-->SetString*/
/**********************************************************************/
/***************************** SetString ****************************/
/**********************************************************************/
void
SetString(firstch, PassNo) /* read and set a consecutive string of chars */
int firstch, PassNo;
{
char s[256];
register char *sp;
register int c;
register struct char_entry *ptr;
int len, hhold;
/* read entire string of chars */
for(c = firstch, sp = s; c >= SETC_000 && c <= SETC_127; ) {
*sp++ = c;
c = NoSignExtend(dvifp, 1);
}
fseek(dvifp, -1, 1); /* backup one character */
len = sp - s; /* NULL's are valid chars, so cant use for string termination */
/* ensure that all characters are loaded, */
for(sp = s; sp < s+len; sp++) {
ptr = &(fontptr->ch[*sp]);
if( !(ptr->where.isloaded) )
LoadAChar(*sp, ptr);
}
/* emit the instructions */
if( PassNo == 0 ) return;
SetPosn(h, v);
if( fontptr->font_file_id != NOFILE ) { /* ignore missing fonts */
if( len <= 1 ) {
EMITN(s[0]);
EMITS("c\n");
}
else {
EMITC('(');
for( sp=s; sp < s+len; sp++) {
if( *sp < ' ' || *sp >= 0177 )
EMITO(*sp);
else if( *sp == '(' || *sp == ')' || *sp == '\\') {
EMITC('\\');
EMITC(*sp);
}
else
EMITC(*sp);
}
EMITS(") s\n");
}
}
/* compute updated positions */
hhold = hh;
for(sp = s; sp < s+len; sp++) {
ptr = &(fontptr->ch[*sp]);
h += ptr->tfmw;
hh += ptr->tfmw;
}
if( fontptr->font_file_id == NOFILE ) hh = hhold; /* because it didn't move */
#ifdef STATS
Stnc += len;
fontptr->ncts += len;
#endif
}
/*-->SignExtend*/
/**********************************************************************/
/**************************** SignExtend ****************************/
/**********************************************************************/
int
SignExtend(fp, n) /* return n byte quantity from file fd */
register FILE *fp; /* file pointer */
register int n; /* number of bytes */
{
int n1; /* number of bytes */
register int x; /* number being constructed */
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! */
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);
}
/*-->SkipFontDef*/
/**********************************************************************/
/**************************** SkipFontDef ***************************/
/**********************************************************************/
void
SkipFontDef(k)
int k;
{
int a, l;
char n[STRSIZE];
NoSignExtend(dvifp, 4);
NoSignExtend(dvifp, 4);
NoSignExtend(dvifp, 4);
a = NoSignExtend(dvifp, 1);
l = NoSignExtend(dvifp, 1);
GetBytes(dvifp, n, a+l);
}
/*-->Warning*/
/**********************************************************************/
/***************************** Warning ******************************/
/**********************************************************************/
void
Warning(fmt, a, b, c) /* issue a warning */
char *fmt; /* format */
char *a, *b, *c; /* arguments */
{
if (G_logging == 0)
{
if (G_logfile)
G_logfp=fopen(G_Logname,"w+");
else
G_logfp=stderr;
G_logging = 1;
if (G_logfp == NULL) G_logging = -1;
}
G_errenc = TRUE;
if (G_logging == 1)
{
fprintf(G_logfp, fmt, a, b, c);
fprintf(G_logfp,"\n");
}
}
!Funky!Stuff!
echo x - dvi2ps.hlp
cat >dvi2ps.hlp <<'!Funky!Stuff!'
DVI2PS UNIX Programmer's Manual DVI2PS
NAME
dvi2ps - convert a DVI file to PostScript (PostScript is a trademark
of Adobe Systems, Inc).
SYNOPSIS
dvi2ps [ -p ] [ -s ] [ -r ] [ -a pxldir ] [-f n] [-t n] [-m n] dvifile[.dvi]
DESCRIPTION
This program converts a DVI file to PostScript, and writes the result
to standard output. The result requires a small amount of PostScript
source to precede it to the printer, before it can be successfully printed.
ARGUMENTS
-p - do not preload font information.
Occasionally there may be insufficent memory to hold the
information about all of the fonts in the system. Portions
of the document may be converted by including the -p option
on the command line. This will prevent the preloading of
all fonts into the system and instead use demand loading of
the font tables.
-s - turn on printing of statistics.
Some versions of dvi2ps will optionally print statistics about
font usage and some other information that is generally only
interesting to developers. On these systems, -s turns on
the statistics printing.
-r - stack pages in reverse order.
Normally, the DVI pages are processed in reverse order, with the
result that they are stacked in the correct order in the output
tray. This option reverses that.
-a pxldir - specify different area for PXL files.
Specifying "-a pxldir" causes directory "pxldir" to be searched
for all pxl files, instead of the default directory.
-f n specify a starting page number (this is a TeX page number, \count0).
-t n specify an ending page number.
-m0 | -mh | -m1 | -m2 | -m3 | -m4
specify a magstep to use to print the document. This overrides
whatever might be in the DVI file.
-m n specify a magnification to use to print the document. This should
probably be one of the magic numbers 1000, 1095, 1200, 1440, 1728,
but no checking is done. Note: if your site does not have the
complete set of 300 dpi fonts, this option might be disabled.
NOTES
This is a `bare bones' DVI-to-PostScript program. Minimal error
checking is done.
Not all fonts are available in the resolution needed to display on the
laser printer; when a missing font is encountered, dvi2ps will continue
to process your dvi file, and and will log a warning message. Gaps will
appear in the document where the missing characters should have been.
It can take up to 60 seconds for the first page to be output. After a
head of steam has been built up, it can roll along at 5-10 seconds
per page.
FILES
*.dvi TeX DeVice Independent output file
/local/tex/pxl300/%.%pxl TeX default font rasters
/local/tex/tex.ps PostScript support code.
SEE ALSO
tex
BUGS
Probably too numerous to mention.
There is likely a limit to the size of documents that can be printed (at
least, on the Apple LaserWriter). If you get VMerrors reported when
printing, use the '-f' and '-t' options, to select a range of pages.
The exact limit is unknown, but is probably well in excess of 50 pages
for "normal" documents, decreasing with number of different fonts used,
size of fonts, etc.
AUTHOR(s)
Mark Senn wrote the early versions of this program for the
BBN BitGraph. Stephan Bechtolsheim, Bob Brown, Richard
Furuta, James Schaad and Robert Wells improved it. Norm
Hutchinson ported the program to the Sun. Neal Holtz ported
it to the Apollo, and then to produce PostScript.
Printed 1/7/85
!Funky!Stuff!
echo x - tex.ps
cat >tex.ps <<'!Funky!Stuff!'
%!
% a start (Ha!) at a TeX mode for PostScript
% Caution: the following violates almost all codes of good programming practice
(Starting TeX job\n) print flush
% units are in "dots" (300/inch)
/Resolution 300 def
/Page-X-Offset 250 def % pages are shifted right this much for TeX
/Page-Y-Offset 275 def % pages are shifted down this much for TeX
/Inch {Resolution mul} def % converts inches to internal units
/PageCounter statusdict begin pagecount end def % so we can report # pages printed
/@newfont % id @newfont - -- initialize a new font dictionary
{ /newname exch def
pop
newname 7 dict def % allocate new font dictionary
newname load begin
/FontType 3 def
/FontMatrix [1 0 0 1 0 0] def
/FontBBox [0 0 1 1] def
/BitMaps 128 array def
/BuildChar {CharBuilder} def
/Encoding 128 array def
0 1 127 {Encoding exch /.undef put} for
end
newname newname load definefont pop
} def
% the following is the only character builder we need. it looks up the
% char data in the BitMaps array, and paints the character if possible.
% char data -- a bitmap descriptor -- is an array of length 6, of
% which the various slots are:
/ch-image {ch-data 0 get} def % the hex string image
/ch-width {ch-data 1 get} def % the number of pixels across
/ch-height {ch-data 2 get} def % the number of pixels tall
/ch-xoff {ch-data 3 get} def % number of pixels below origin
/ch-yoff {ch-data 4 get} def % number of pixels to left of origin
/ch-tfmw {ch-data 5 get} def % spacing to next character
/CharBuilder % fontdict ch Charbuilder - -- image one character
{ /ch-code exch def % save the char code
/font-dict exch def % and the font dict.
/ch-data font-dict /BitMaps get ch-code get def % get the bitmap descriptor for char
ch-data null eq not
{ ch-tfmw 0 ch-xoff neg ch-yoff neg ch-width ch-xoff sub ch-height ch-yoff sub
setcachedevice
ch-width ch-height true [1 0 0 1 ch-xoff ch-yoff]
{ch-image} imagemask
}
if
} def
/@sf % fontdict @sf - -- make that the current font
{ setfont
} def
% in the following, the font-cacheing mechanism requires that
% a name unique in the particular font be generated
/@dc % char-data ch @dc - -- define a new character bitmap in current font
{ /ch-code exch def
/ch-data exch def
currentfont /BitMaps get ch-code ch-data put
currentfont /Encoding get ch-code
dup ( ) cvs cvn % generate a unique name simply from the character code
put
} def
/@bop0 % n @bop0 - -- begin the char def section of a new page
{ (Page ) print == flush
} def
/@bop1 % n @bop1 - -- begin a brand new page
{ pop
erasepage initgraphics
% translations are a haque to get correct margins (1" default for TeX)
[1.0 0.0 0.0 -1.0 Page-X-Offset 11 Inch Page-Y-Offset add] setmatrix
/SaveImage save def
} def
/@eop % - @eop - -- end a page
{ showpage
SaveImage restore
%% vmstatus exch sub == pop % print a few statistics (mem remaining)
} def
/@end % - @end - -- done the whole shebang
{ (Done! ) print
statusdict begin pagecount end PageCounter sub
dup /PageCounter exch def
( ) cvs print
( pages printed.\n) print flush
erasepage initgraphics
count 0 gt % print stats if stack not empty
{ PageCounter 3 ge % and if there were a significant number of pages
{ /Times-Bold findfont 16 scalefont setfont
newpath 200 500 moveto
count
{ gsave
( ) cvs show
grestore
0 -30 rmoveto
}
repeat
0 -20 rmoveto
PageCounter ( ) cvs show
( pages printed.) show
0.3 setgray
newpath 0 792 moveto
0 -24 rlineto 692 0 rlineto 0 24 rlineto closepath fill
newpath 0 0 moveto
692 0 rlineto 0 24 rlineto -692 0 rlineto closepath fill
showpage
}
if
}
if
} def
/p % x y p - -- move to position
{ moveto
} def
/r % x r - -- move right
{ 0 rmoveto
} def
/s % string s - -- show the string
{ show
} def
/c % ch c - -- show the character (code given)
{ c-string exch 0 exch put
c-string show
} def
/c-string ( ) def
/ru % dx dy ru - -- set a rule (rectangle)
{ /dy exch def
/dx exch def
/x currentpoint /y exch def def % remember current point
newpath x y moveto
dx 0 rlineto
0 dy rlineto
dx neg 0 rlineto
closepath fill
x y moveto
} def
% this will be invoked as the result of a \special command (for the
% inclusion of PostScript graphics). The basic idea is to change all
% scaling and graphics back to defaults, but to shift the origin
% to the current position on the page. Due to TeXnical difficulties,
% we only set the y-origin. The x-origin is set at the left edge of
% the page.
/@beginspecial % - @beginspecial - -- enter special mode
{ /SpecialSave save def gsave
currentpoint initgraphics
exch pop Page-Y-Offset sub % remember, page is offset vertically
72 1 Inch div mul % convert this dimension to points
0 exch translate
} def
/@endspecial % - @endspecial - -- leave specail mode
{ grestore SpecialSave restore
} def
!Funky!Stuff!
-------