Software of the Month Club 1996 April/Software of the Month Club 1996 April.iso/pc/os2/psutils/src/pstops.c

C/C++ Source or Header | 1996-02-21 | 4.8 KB | 199 lines

/* pstops.c
 * Copyright (C) Angus J. C. Duggan 1991-1995
 * See file LICENSE for details.
 *
 * rearrange pages in conforming PS file for printing in signatures
 *
 * Usage:
 *       pstops [-q] [-b] [-d] [-w<dim>] [-h<dim>] [-ppaper] <pagespecs> [infile [outfile]]
 */

#include "psutil.h"
#include "psspec.h"
#include "pserror.h"
#include "patchlev.h"

char *program ;
int pages ;
int verbose ;
FILE *infile ;
FILE *outfile ;
char pagelabel[BUFSIZ] ;
int pageno ;

void usage(void)
{
   fprintf(stderr, "%s release %d patchlevel %d\n", program, RELEASE, PATCHLEVEL);
   fprintf(stderr, "Copyright (C) Angus J. C. Duggan, 1991-1995. See file LICENSE for details.\n");
   fprintf(stderr, "Usage: %s [-q] [-b] [-wwidth] [-hheight] [-dlwidth] [-ppaper] <pagespecs> [infile [outfile]]\n",
       program);
   fflush(stderr);
   exit(1);
}

static void argerror(void)
{
   fprintf(stderr, "%s: page specification error:\n", program);
   fprintf(stderr, "  <pagespecs> = [modulo:]<spec>\n");
   fprintf(stderr, "  <spec>      = [-]pageno[@scale][L|R|U][(xoff,yoff)][,spec|+spec]\n");
   fprintf(stderr, "                modulo>=1, 0<=pageno<modulo\n");
   fflush(stderr);
   exit(1);
}

static int modulo = 1;
static int pagesperspec = 1;

static PageSpec *parsespecs(char *str)
{
   PageSpec *head, *tail;
   int other = 0;
   int num = -1;

   head = tail = newspec();
   while (*str) {
      if (isdigit(*str)) {
     num = parseint(&str, argerror);
      } else {
     switch (*str++) {
     case ':':
        if (other || head != tail || num < 1) argerror();
        modulo = num;
        num = -1;
        break;
     case '-':
        tail->reversed = !tail->reversed;
        break;
     case '@':
        if (num < 0) argerror();
        tail->scale *= parsedouble(&str, argerror);
        tail->flags |= SCALE;
        break;
     case 'l': case 'L':
        tail->rotate += 90;
        tail->flags |= ROTATE;
        break;
     case 'r': case 'R':
        tail->rotate -= 90;
        tail->flags |= ROTATE;
        break;
     case 'u': case 'U':
        tail->rotate += 180;
        tail->flags |= ROTATE;
        break;
     case '(':
        tail->xoff += parsedimen(&str, argerror);
        if (*str++ != ',') argerror();
        tail->yoff += parsedimen(&str, argerror);
        if (*str++ != ')') argerror();
        tail->flags |= OFFSET;
        break;
     case '+':
        tail->flags |= ADD_NEXT;
     case ',':
        if (num < 0 || num >= modulo) argerror();
        if ((tail->flags & ADD_NEXT) == 0)
           pagesperspec++;
        tail->pageno = num;
        tail->next = newspec();
        tail = tail->next;
        num = -1;
        break;
     default:
        argerror();
     }
     other = 1;
      }
   }
   if (num >= modulo)
      argerror();
   else if (num >= 0)
      tail->pageno = num;
   return (head);
}

void main(int argc, char *argv[])
{
   PageSpec *specs = NULL;
   int nobinding = 0;
   double draw = 0;
   Paper *paper;

#ifdef PAPER
   if ( (paper = findpaper(PAPER)) != (Paper *)0 ) {
      width = (double)PaperWidth(paper);
      height = (double)PaperHeight(paper);
   }
#endif

   infile = stdin;
   outfile = stdout;
   verbose = 1;
   for (program = *argv++; --argc; argv++) {
      if (argv[0][0] == '-') {
     switch (argv[0][1]) {
     case 'q':    /* quiet */
        verbose = 0;
        break;
     case 'd':    /* draw borders */
        if (argv[0][2])
           draw = singledimen(*argv+2, argerror, usage);
        else
           draw = 1;
        break;
     case 'b':    /* no bind operator */
        nobinding = 1;
        break;
     case 'w':    /* page width */
        width = singledimen(*argv+2, argerror, usage);
        break;
     case 'h':    /* page height */
        height = singledimen(*argv+2, argerror, usage);
        break;
     case 'p':    /* paper type */
        if ( (paper = findpaper(*argv+2)) != (Paper *)0 ) {
           width = (double)PaperWidth(paper);
           height = (double)PaperHeight(paper);
        } else
          message(FATAL, "paper size '%s' not recognised\n", *argv+2);
        break;
     case 'v':    /* version */
        usage();
     default:
        if (specs == NULL)
           specs = parsespecs(*argv);
        else
           usage();
     }
      } else if (specs == NULL)
     specs = parsespecs(*argv);
      else if (infile == stdin) {
     if ((infile = fopen(*argv, OPEN_READ)) == NULL)
        message(FATAL, "can't open input file %s\n", *argv);
      } else if (outfile == stdout) {
     if ((outfile = fopen(*argv, OPEN_WRITE)) == NULL)
        message(FATAL, "can't open output file %s\n", *argv);
      } else usage();
   }
   if (specs == NULL)
      usage();
#if defined(MSDOS) || defined(WINNT)
   if ( infile == stdin ) {
      int fd = fileno(stdin) ;
      if ( setmode(fd, O_BINARY) < 0 )
         message(FATAL, "can't open input file %s\n", argv[4]);
    }
   if ( outfile == stdout ) {
      int fd = fileno(stdout) ;
      if ( setmode(fd, O_BINARY) < 0 )
         message(FATAL, "can't reset stdout to binary mode\n");
    }
#endif
   if ((infile=seekable(infile))==NULL)
      message(FATAL, "can't seek input\n");

   pstops(modulo, pagesperspec, nobinding, specs, draw);

   exit(0);
}