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/* $Log: prescanpage.c,v $
* Revision 0.8 92/11/23 19:46:55 19:46:55 bt (Bo Thide')
* Fixed resolution bug. Portable downloading. Added/changed options. PJXL color support
*
* Revision 0.7 92/11/13 02:41:40 02:41:40 bt (Bo Thide')
* More bug fixes and improvements. Support for PaintJet XL
*
* Revision 0.6 92/11/10 21:48:37 21:48:37 bt (Bo Thide')
* Bug fixes. Added -R option. Better font handling.
*
* Revision 0.5 92/11/09 16:25:43 16:25:43 bt (Bo Thide')
* Rewrite of dospecial.c. Extended \special support
*
* Revision 0.4 92/11/08 02:46:00 02:46:00 bt (Bo Thide')
* Changed to portable bit manipulations. Replaced strrstr for non-POSIX compliant C. Fixed numerous bugs. Added support for more \special's.
*
* Revision 0.3 92/08/24 12:43:21 12:43:21 bt (Bo Thide')
* Fixed 8 bit (dc font) support.
*
* Revision 0.2 92/08/23 17:29:00 17:29:00 bt (Bo Thide')
* Source cleaned up. Changed certain function calls. Removed globals.
*
* Revision 0.1 92/08/22 23:58:48 23:58:48 bt (Bo Thide')
* First Release.
* */
/*
* This routine will scan a page from 'bop' to 'eop', maintaining information
* about font usage. It also catches errors like illegal font numbers or
* characters. Finally, it also counts the number of pages actually processed,
* so if the file is scanned backwards, it will end correctly.
*/
#include <stdio.h>
#include "dvi.h"
#include "globals.h"
#include "macros.h"
static char rcsid[] = "$Header: prescanpage.c,v 0.8 92/11/23 19:46:55 bt Exp $";
prescanpage(bitfile, dvifile, pcllevel, resolution)
FILE *bitfile;
FILE *dvifile;
short pcllevel, resolution;
{
bool badchar;
int k;
int q;
int font_num;
int font_used[MAXFONTS];
long p;
long hh=0L; /* Pixel analog of DVI unit h */
long vv=0L; /* Pixel analog of DVI unit v */
actualpagecount++;
for(k = 0 ; k < MAXFONTS ; k++)
font_used[k] = FALSE;
font_num = 0;
while (TRUE){
if((k = (int)getubyte(dvifile)) < DVI_SET1)
(cbase + k)->use_count++;
else {
p = firstpar(dvifile, k);
#ifdef DEBUG2
fprintf(stderr,"\nprescanpage: p = %d,k = %d", p, k);
#endif /* DEBUG2 */
switch (k) {
case DVI_BOP:
scanbop(dvifile);
break;
case DVI_EOP:
goto end;
break;
case DVI_SET1:
case DVI_SET2:
case DVI_SET3:
case DVI_SET4:
case DVI_PUT1:
case DVI_PUT2:
case DVI_PUT3:
case DVI_PUT4:
if(p > 255)
prerror("Char > 255 encountered\n");
else
(cbase + p)->use_count++;
break;
case DVI_SET_RULE:
case DVI_PUT_RULE:
getsquad(dvifile);
break;
case DVI_FNT_DEF1:
case DVI_FNT_DEF2:
case DVI_FNT_DEF3:
case DVI_FNT_DEF4:
definefont(dvifile, p);
break;
case DVI_XXX1:
case DVI_XXX2:
case DVI_XXX3:
case DVI_XXX4:
badchar = FALSE;
if(p + nextnamesfree - names > NAMESIZE)
prerror("Out of string space during special\n");
for (k=0; k<(int)p; k++)
{
q = (int)getubyte(dvifile);
if((q < ' ') || (q > '~'))
badchar = TRUE;
*(nextnamesfree + k) = q;
}
*(nextnamesfree + p) = '\0';
if(badchar)
fprintf(stderr,"non-ASCII character in DVI_XXX command\n");
dospecial(bitfile, PRESCAN_ON, pcllevel, hh, vv, resolution);
break;
case DVI_POST:
inpostamble = TRUE;
goto end;
break;
default:
if((k >= DVI_FNT_NUM_0) && (k <= DVI_FNT4))
{
if(p > MAXFONTS)
valerror("Max number of allowed fonts is %3d\n", MAXFONTS);
else {
font = fontptr[p];
if(font == NULL)
prerror("Undefined font\n");
else {
cbase = font->chr;
if(!font_used[p]) {
font_used[p] = TRUE;
font_num++;
}
}
}
}
break;
}
}
}
end:
if(font_num > 16)
{
fprintf(stderr,"Warning: ");
printbop(startvals, count);
fprintf(stderr,"prescanpage: %d [>16] fonts on page\n",font_num);
}
}
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