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/*
* This routine handles special commands;
* predospecial() is for the prescan, dospecial() for the real thing.
*/
#include "dvips.h" /* The copyright notice in that file is included too! */
#include <kpathsea/c-ctype.h>
extern void fil2ps();
extern FILE *search();
extern int system();
/*
* These are the external routines called:
*/
/**/
#ifdef TPIC
/*
* Fri Mar 9 1990 jourdan@minos.inria.fr (MJ)
* Upgraded to accommodate tpic release 2.0 extended output language.
* Should prove upward compatible!
*/
extern void setPenSize();
extern void flushPath();
extern void flushDashed();
extern void flushDashed();
extern void addPath();
extern void arc();
extern void flushSpline();
extern void shadeLast();
extern void whitenLast();
extern void blackenLast();
extern void SetShade() ;
#endif
extern shalfword dvibyte() ;
extern int add_header() ;
extern void hvpos() ;
extern void figcopyfile() ;
extern void nlcmdout() ;
extern void cmdout() ;
extern void numout() ;
extern void scout() ;
extern void stringend() ;
extern void error() ;
extern void psflush() ;
extern void emspecial() ;
/* IBM: color - begin */
extern void pushcolor() ;
extern void popcolor() ;
extern void resetcolorstack() ;
extern void background() ;
/* IBM: color - end */
extern char errbuf[] ;
extern shalfword linepos;
extern Boolean usesspecial ;
extern Boolean usescolor ; /* IBM: color */
extern int landscape ;
extern char *paperfmt ;
extern char *nextstring;
extern char *maxstring;
extern char *oname;
extern FILE *bitfile;
extern int quiet;
extern fontdesctype *curfnt ;
extern int actualdpi ;
extern int vactualdpi ;
extern integer hh, vv;
extern int lastfont ;
extern real conv ;
extern real vconv ;
extern integer hpapersize, vpapersize ;
extern Boolean pprescan ;
extern int prettycolumn ;
extern Boolean disablecomments ;
#ifdef DEBUG
extern integer debug_flag;
#endif
extern void scanfontcomments() ;
extern void handlepapersize() ;
static int specialerrors = 20 ;
struct bangspecial {
struct bangspecial *next ;
char actualstuff[1] ; /* more space will actually be allocated */
} *bangspecials = NULL ;
void specerror(s)
char *s ;
{
if (specialerrors > 0) {
error(s) ;
specialerrors-- ;
} else if (specialerrors == 0) {
error("more errors in special, being ignored . . .") ;
specialerrors-- ;
}
}
static void trytobreakout(p)
register char *p ;
{
register int i ;
register int instring = 0 ;
int lastc = 0 ;
i = 0 ;
(void)putc('\n', bitfile) ;
while (*p) {
if (i > 65 && *p == ' ' && instring == 0) {
(void)putc('\n', bitfile) ;
i = 0 ;
} else {
(void)putc(*p, bitfile) ;
i++ ;
}
if (*p == '(' && lastc != '\\')
instring = 1 ;
else if (*p == ')' && lastc != '\\')
instring = 0 ;
lastc = *p ;
p++ ;
}
(void)putc('\n', bitfile) ;
}
static void dobs(q)
register struct bangspecial *q ;
{
if (q) {
dobs(q->next) ;
trytobreakout(q->actualstuff) ;
}
}
void
outbangspecials() {
if (bangspecials) {
cmdout("TeXDict") ;
cmdout("begin") ;
cmdout("@defspecial\n") ;
dobs(bangspecials) ;
cmdout("\n@fedspecial") ;
cmdout("end") ;
}
}
/* We recommend that new specials be handled by the following general
* (and extensible) scheme, in which the user specifies one or more
* `key=value' pairs separated by spaces.
* The known keys are given in KeyTab; they take values
* of one of the following types:
*
* None: no value, just a keyword (in which case the = sign is omitted)
* String: the value should be "<string without double-quotes"
* or '<string without single-quotes'
* Integer: the value should be a decimal integer (%d format)
* Number: the value should be a decimal integer or real (%f format)
* Dimension: like Number, but will be multiplied by the scaledsize
* of the current font and converted to default PostScript units
* (Actually, strings are allowed in all cases; the delimiting quotes
* are simply stripped off if present.)
*
*/
typedef enum {None, String, Integer, Number, Dimension} ValTyp;
typedef struct {
char *Entry;
ValTyp Type;
} KeyDesc;
#define NKEYS (sizeof(KeyTab)/sizeof(KeyTab[0]))
KeyDesc KeyTab[] = {{"psfile", String}, /* j==0 in the routine below */
{"ifffile", String}, /* j==1 */
{"tekfile", String}, /* j==2 */
{"hsize", Number},
{"vsize", Number},
{"hoffset", Number},
{"voffset", Number},
{"hscale", Number},
{"vscale", Number},
{"angle", Number},
{"llx", Number},
{"lly", Number},
{"urx", Number},
{"ury", Number},
{"rwi", Number},
{"rhi", Number},
{"clip", None}};
int IsSame(a, b)
char *a, *b;
{
for( ; *a != '\0'; ) {
if( TOLOWER(*a) != TOLOWER(*b) )
return( 0 );
a++ ;
b++ ;
}
return( *b == '\0' );
}
char *KeyStr, *ValStr ; /* Key and String values found */
long ValInt ; /* Integer value found */
float ValNum ; /* Number or Dimension value found */
char *GetKeyVal(str,tno) /* returns NULL if none found, else next scan point */
char *str ; /* starting point for scan */
int *tno ; /* table entry number of keyword, or -1 if keyword not found */
{
register char *s ;
register int i ;
register char t ;
for (s=str; *s <= ' ' && *s; s++) ; /* skip over blanks */
if (*s == '\0')
return (NULL) ;
KeyStr = s ;
while (*s>' ' && *s!='=') s++ ;
if (0 != (t = *s))
*s++ = 0 ;
for(i=0; i<NKEYS; i++)
if( IsSame(KeyStr, KeyTab[i].Entry) )
goto found ;
*tno = -1;
return (s) ;
found: *tno = i ;
if (KeyTab[i].Type == None)
return (s) ;
if (t && t <= ' ') {
for (; *s <= ' ' && *s; s++) ; /* now look for the value part */
if ((t = *s)=='=')
s++ ;
}
ValStr = "" ;
if ( t == '=' ) {
while (*s <= ' ' && *s)
s++ ;
if (*s=='\'' || *s=='\"')
t = *s++ ; /* get string delimiter */
else t = ' ' ;
ValStr = s ;
while (*s!=t && *s)
s++ ;
if (*s)
*s++ = 0 ;
}
switch (KeyTab[i].Type) {
case Integer:
if(sscanf(ValStr,"%ld",&ValInt)!=1) {
sprintf(errbuf,"Non-integer value (%s) given for keyword %s",
ValStr, KeyStr) ;
specerror(errbuf) ;
ValInt = 0 ;
}
break ;
case Number:
case Dimension:
if(sscanf(ValStr,"%f",&ValNum)!=1) {
sprintf(errbuf,"Non-numeric value (%s) given for keyword %s",
ValStr, KeyStr) ;
specerror(errbuf) ;
ValNum = 0.0 ;
}
if (KeyTab[i].Type==Dimension) {
if (curfnt==NULL)
error("! No font selected") ;
ValNum = ValNum * ((double)curfnt->scaledsize) * conv * 72 / DPI ;
}
break ;
default: break ;
}
return (s) ;
}
/*
* Now our routines. We get the number of bytes specified and place them
* into the string buffer, and then parse it. Numerous conventions are
* supported here for historical reasons.
*
* To support GNUplot's horribly long specials, we go ahead and malloc a
* new string buffer if necessary.
*/
void predospecial(numbytes, scanning)
integer numbytes ;
Boolean scanning ;
{
register char *p = nextstring ;
register int i = 0 ;
int j ;
if (nextstring + numbytes > maxstring) {
p = nextstring = mymalloc(1000 + 2 * numbytes) ;
maxstring = nextstring + 2 * numbytes + 700 ;
}
for (i=numbytes; i>0; i--)
#ifdef VMCMS /* IBM: VM/CMS */
*p++ = ascii2ebcdic[(char)dvibyte()] ;
#else
#ifdef MVSXA /* IBM: MVS/XA */
*p++ = ascii2ebcdic[(char)dvibyte()] ;
#else
*p++ = (char)dvibyte() ;
#endif /* IBM: VM/CMS */
#endif
if (pprescan)
return ;
while (p[-1] <= ' ' && p > nextstring)
p-- ; /* trim trailing blanks */
if (p==nextstring) return ; /* all blank is no-op */
*p = 0 ;
p = nextstring ;
while (*p <= ' ')
p++ ;
#ifdef DEBUG
if (dd(D_SPECIAL))
(void)fprintf(stderr, "Preprocessing special: %s\n", p) ;
#endif
/*
* We use strncmp() here to also pass things like landscape()
* or landscape: or such.
*/
switch (*p) {
case 'l':
if (strncmp(p, "landscape", 9)==0) {
if (hpapersize || vpapersize)
error(
"both landscape and papersize specified: ignoring landscape") ;
else
landscape = 1 ;
return ;
}
break ;
case 'p':
if (strncmp(p, "papersize", 9)==0) {
p += 9 ;
while (*p == '=' || *p == ' ')
p++ ;
if (hpapersize == 0 || vpapersize == 0) {
if (landscape) {
error(
"both landscape and papersize specified: ignoring landscape") ;
landscape = 0 ;
}
handlepapersize(p, &hpapersize, &vpapersize) ;
}
return ;
}
break ;
case 'x':
if (strncmp(p, "xtex:", 5)==0) return ;
break ;
case 'h':
if (strncmp(p, "header", 6)==0) {
char *q ;
p += 6 ;
while ((*p <= ' ' || *p == '=' || *p == '(') && *p != 0)
p++ ;
q = p ; /* we will remove enclosing parentheses */
p = p + strlen(p) - 1 ;
while ((*p <= ' ' || *p == ')') && p >= q)
p-- ;
p[1] = 0 ;
if (p >= q)
(void)add_header(q) ;
}
break ;
/* IBM: color - added section here for color header and color history */
case 'b':
if (strncmp(p, "background", 10) == 0) {
usescolor = 1 ;
p +=11 ;
while ( *p <= ' ' ) p++ ;
background(p) ;
return ;
}
break ;
case 'c':
if (strncmp(p, "color", 5) == 0) {
usescolor = 1 ;
p += 6 ;
while ( *p <= ' ' ) p++ ;
if (strncmp(p, "push", 4) == 0 ) {
p += 5 ;
while ( *p <= ' ' ) p++ ;
pushcolor(p, 0) ;
} else if (strncmp(p, "pop", 3) == 0 ) {
popcolor(0) ;
} else {
resetcolorstack(p,0) ;
}
} /* IBM: color - end changes */
break ;
case '!':
{
register struct bangspecial *q ;
p++ ;
q = (struct bangspecial *)mymalloc((integer)
(sizeof(struct bangspecial) + strlen(p))) ;
(void)strcpy(q->actualstuff, p) ;
q->next = bangspecials ;
bangspecials = q ;
usesspecial = 1 ;
return ;
}
break ;
default:
break ;
}
usesspecial = 1 ; /* now the special prolog will be sent */
if (scanning && *p != '"' && (p=GetKeyVal(p, &j)) != NULL && j==0
&& *ValStr != '`') /* Don't bother to scan compressed files. */
scanfontcomments(ValStr) ;
}
int maccess(s)
char *s ;
{
FILE *f = search(figpath, s, "r") ;
if (f)
fclose(f) ;
return (f != 0) ;
}
char *tasks[] = { 0, "iff2ps", "tek2ps" } ;
static char psfile[511] ;
void dospecial(numbytes)
integer numbytes ;
{
register char *p = nextstring ;
register int i = 0 ;
int j, systemtype = 0 ;
register char *q ;
Boolean psfilewanted = 1 ;
char *task = 0 ;
char cmdbuf[111] ;
if (nextstring + i > maxstring)
error("! out of string space in dospecial") ;
for (i=numbytes; i>0; i--)
#ifdef VMCMS /* IBM: VM/CMS */
*p++ = ascii2ebcdic[(char)dvibyte()] ;
#else
#ifdef MVSXA /* IBM: MVS/XA */
*p++ = ascii2ebcdic[(char)dvibyte()] ;
#else
*p++ = (char)dvibyte() ;
#endif /* IBM: VM/CMS */
#endif
while (p[-1] <= ' ' && p > nextstring)
p-- ; /* trim trailing blanks */
if (p==nextstring) return ; /* all blank is no-op */
*p = 0 ;
p = nextstring ;
while (*p <= ' ')
p++ ;
#ifdef DEBUG
if (dd(D_SPECIAL))
(void)fprintf(stderr, "Processing special: %s\n", p) ;
#endif
switch (*p) {
case 'e':
if (strncmp(p, "em:", 3)==0) { /* emTeX specials in emspecial.c */
emspecial(p);
return;
}
break ;
case 'p':
if (strncmp(p, "ps:", 3)==0) {
psflush() ; /* now anything can happen. */
if (p[3]==':') {
if (strncmp(p+4, "[begin]", 7) == 0) {
hvpos() ;
trytobreakout(&p[11]);
} else if (strncmp(p+4, "[end]", 5) == 0)
trytobreakout(&p[9]);
else trytobreakout(&p[4]);
} else if (strncmp(p+3, " plotfile ", 10) == 0) {
char *sfp ;
hvpos() ;
p += 13;
/*
* Fixed to allow popen input for plotfile
* TJD 10/20/91
*/
while (*p == ' ') p++;
if (*p == '"') {
p++;
for (sfp = p; *sfp && *sfp != '"'; sfp++) ;
} else {
for (sfp = p; *sfp && *sfp != ' '; sfp++) ;
}
*sfp = '\0';
if (*p == '`')
figcopyfile(p+1, 1);
else
figcopyfile (p, 0);
/* End TJD changes */
} else {
hvpos() ;
trytobreakout(&p[3]);
psflush() ;
hvpos() ;
}
return;
}
if (strncmp(p, "papersize", 9) == 0)
return ;
#ifdef TPIC
if (strncmp(p, "pn ", 3) == 0) {setPenSize(p+2); return;}
if (strncmp(p, "pa ", 3) == 0) {addPath(p+2); return;}
#endif
break ;
case 'l':
if (strncmp(p, "landscape", 9)==0) return ;
break ;
case '!':
return ;
case 'h':
if (strncmp(p, "header", 6)==0) return ;
if (strncmp(p, "html:", 5)==0) return ;
case 'w':
case 'W':
if (strncmp(p+1, "arning", 6) == 0) {
static int maxwarns = 50 ;
if (maxwarns > 0) {
error(p) ;
maxwarns-- ;
} else if (maxwarns == 0) {
error(". . . rest of warnings suppressed") ;
maxwarns-- ;
}
return ;
}
#ifdef TPIC
if (strcmp(p, "wh") == 0) {whitenLast(); return;}
#endif
break ;
case 'b':
if ( strncmp(p, "background", 10) == 0 )
return ; /* already handled in prescan */
#ifdef TPIC
if (strcmp(p, "bk") == 0) {blackenLast(); return;}
#endif
break ;
case 'c':
if (strncmp(p, "color", 5) == 0) {
p += 6 ;
while ( *p <= ' ' ) p++ ;
if (strncmp(p, "push", 4) == 0 ) {
p += 4 ;
while ( *p <= ' ' ) p++ ;
pushcolor(p,1);
} else if (strncmp(p, "pop", 3) == 0 ) {
popcolor(1) ;
} else {
resetcolorstack(p,1) ;
}
return ;
} /* IBM: color - end changes*/
break ;
case 'f':
#ifdef TPIC
if (strcmp(p, "fp") == 0) {flushPath(0); return;}
#endif
break ;
case 'i':
#ifdef TPIC
if (strcmp(p, "ip") == 0) {flushPath(1); return;} /* tpic 2.0 */
if (strncmp(p, "ia ", 3) == 0) {arc(p+2, 1); return;} /* tpic 2.0 */
#endif
break ;
case 'd':
#ifdef TPIC
if (strncmp(p, "da ", 3) == 0) {flushDashed(p+2, 0); return;}
if (strncmp(p, "dt ", 3) == 0) {flushDashed(p+2, 1); return;}
#endif
break ;
case 's':
#ifdef TPIC
if (strcmp(p, "sp") == 0) {flushSpline(p+2); return;} /* tpic 2.0 */
if (strncmp(p, "sp ", 3) == 0) {flushSpline(p+3); return;} /* tpic 2.0 */
if (strcmp(p, "sh") == 0) {shadeLast(p+2); return;} /* tpic 2.0 */
if (strncmp(p, "sh ", 3) == 0) {shadeLast(p+3); return;} /* tpic 2.0 */
#endif
break ;
case 'a':
#ifdef TPIC
if (strncmp(p, "ar ", 3) == 0) {arc(p+2, 0); return;} /* tpic 2.0 */
#endif
break ;
case 't':
#ifdef TPIC
if (strncmp(p, "tx ", 3) == 0) {SetShade(p+3); return;}
#endif
break ;
case '"':
hvpos() ;
cmdout("@beginspecial") ;
cmdout("@setspecial") ;
trytobreakout(p+1) ;
cmdout("\n@endspecial") ;
return ;
break ;
default:
break ;
}
/* At last we get to the key/value conventions */
psfile[0] = '\0';
hvpos();
cmdout("@beginspecial");
while( (p=GetKeyVal(p,&j)) != NULL )
switch (j) {
case -1: /* for compatability with old conventions, we allow a file name
* to be given without the 'psfile=' keyword */
if (!psfile[0] && maccess(KeyStr)==0) /* yes we can read it */
(void)strcpy(psfile,KeyStr) ;
else {
sprintf(errbuf, "Unknown keyword (%s) in \\special will be ignored",
KeyStr) ;
specerror(errbuf) ;
}
break ;
case 0: case 1: case 2: /* psfile */
if (psfile[0]) {
sprintf(errbuf, "More than one \\special %s given; %s ignored",
"psfile", ValStr) ;
specerror(errbuf) ;
}
else (void)strcpy(psfile,ValStr) ;
task = tasks[j] ;
break ;
default: /* most keywords are output as PostScript procedure calls */
if (KeyTab[j].Type == Integer)
numout((integer)ValInt);
else if (KeyTab[j].Type == String)
for (q=ValStr; *q; q++)
scout(*q) ;
else if (KeyTab[j].Type == None) ;
else { /* Number or Dimension */
ValInt = (integer)(ValNum<0? ValNum-0.5 : ValNum+0.5) ;
if (ValInt-ValNum < 0.001 && ValInt-ValNum > -0.001)
numout((integer)ValInt) ;
else {
(void)sprintf(cmdbuf, "%f", ValNum) ;
cmdout(cmdbuf) ;
}
}
(void)sprintf(cmdbuf, "@%s", KeyStr);
cmdout(cmdbuf) ;
}
cmdout("@setspecial");
if(psfile[0]) {
if (task == 0) {
systemtype = (psfile[0]=='`') ;
figcopyfile(psfile+systemtype, systemtype);
} else {
fil2ps(task, psfile) ;
}
} else if (psfilewanted)
specerror("No \\special psfile was given; figure will be blank") ;
cmdout("@endspecial");
}
extern char realnameoffile[] ;
void fil2ps(task, iname)
char *task, *iname ;
{
char cmd[400] ;
FILE *f ;
if (0 != (f=search(pictpath, iname, "r"))) {
fclose(f) ;
} else {
fprintf(stderr, " couldn't open %s\n", iname) ;
return ;
}
if (!quiet) {
fprintf(stderr, " [%s", realnameoffile) ;
fflush(stderr) ;
}
if (oname && oname[0] && oname[0] != '-') {
putc(10, bitfile) ;
fclose(bitfile) ;
sprintf(cmd, "%s -f %s %s", task, realnameoffile, oname) ;
system(cmd) ;
if ((bitfile=fopen(oname, "a"))==NULL)
error("! couldn't reopen PostScript file") ;
linepos = 0 ;
} else {
sprintf(cmd, "%s -f %s", task, realnameoffile) ;
system(cmd) ;
}
if (!quiet)
fprintf(stderr, "]") ;
}
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