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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, "]") ;
- }
-
-