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/* psbook.c
* (c) Reuben Thomas 2012-2014
* (c) Angus J. C. Duggan 1991-1997
* See file LICENSE for details.
*
* rearrange pages in conforming PS file for printing in signatures
*/
#include "config.h"
#include <unistd.h>
#include "progname.h"
#include "binary-io.h"
#include "psutil.h"
const char *syntax = "[-q] [-sSIGNATURE] [INFILE [OUTFILE]]\n SIGNATURE must be positive and divisible by 4\n";
const char *argerr_message = "";
int
main(int argc, char *argv[])
{
int signature = 0;
int currentpg, maxpage;
int opt;
set_program_name (argv[0]);
verbose = 1;
while((opt = getopt(argc, argv, "vqs:")) != EOF) {
switch(opt) {
case 's': /* signature size */
signature = atoi(optarg);
if (signature < 1 || signature % 4) usage();
break;
case 'q': /* quiet */
verbose = 0;
break;
case 'v': /* version */
default:
usage();
break;
}
}
infile = stdin;
outfile = stdout;
/* Be defensive */
if((argc - optind) < 0 || (argc - optind) > 2) usage();
if (optind != argc) {
/* User specified an input file */
if ((infile = fopen(argv[optind], "rb")) == NULL)
die("can't open input file %s", argv[optind]);
optind++;
}
if (optind != argc) {
/* User specified an output file */
if ((outfile = fopen(argv[optind], "wb")) == NULL)
die("can't open output file %s", argv[optind]);
optind++;
}
if(optind != argc) usage();
if (infile == stdin && set_binary_mode(fileno(stdin), O_BINARY) < 0)
die("can't reset stdin to binary mode");
if (outfile == stdout && set_binary_mode(fileno(stdout), O_BINARY) < 0)
die("can't reset stdout to binary mode");
if ((infile=seekable(infile))==NULL)
die("can't seek input");
scanpages(NULL);
if (!signature)
signature = maxpage = pages+(4-pages%4)%4;
else
maxpage = pages+(signature-pages%signature)%signature;
/* rearrange pages */
writeheader(maxpage, NULL);
writeprolog();
writesetup();
for (currentpg = 0; currentpg < maxpage; currentpg++) {
int actualpg = currentpg - currentpg%signature;
switch(currentpg%4) {
case 0:
case 3:
actualpg += signature-1-(currentpg%signature)/2;
break;
case 1:
case 2:
actualpg += (currentpg%signature)/2;
break;
default: /* Avoid a compiler warning */
break;
}
if (actualpg < pages)
writepage(actualpg);
else
writeemptypage();
}
writetrailer();
return 0;
}
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