roff.c

   1 /*
   2  * neatroff troff clone
   3  *
   4  * Copyright (C) 2012-2013 Ali Gholami Rudi <ali at rudi dot ir>
   5  *
   6  * This program is released under the modified BSD license.
   7  */
   8 #include <stdarg.h>
   9 #include <stdio.h>
  10 #include <string.h>
  11 #include <stdlib.h>
  12 #include "roff.h"
  13
  14 static void g_init(void)
  15 {
  16         n_o = SC_IN;
  17         n_p = SC_IN * 11;
  18         n_lg = 1;
  19         n_kn = 0;
  20 }
  21
  22 void errmsg(char *fmt, ...)
  23 {
  24         va_list ap;
  25         va_start(ap, fmt);
  26         vfprintf(stderr, fmt, ap);
  27         va_end(ap);
  28 }
  29
  30 void errdie(char *msg)
  31 {
  32         fprintf(stderr, msg);
  33         exit(1);
  34 }
  35
  36 static char *usage =
  37         "Usage: neatcc [options] input\n"
  38         "Options:\n"
  39         "  -mx   \tinclude macro x\n"
  40         "  -C    \tenable compatibility mode\n"
  41         "  -Tdev \tset output device\n"
  42         "  -Fdir \tset font directory (" TROFFFDIR ")\n"
  43         "  -Mdir \tset macro directory (" TROFFMDIR ")\n";
  44
  45 int main(int argc, char **argv)
  46 {
  47         char fontdir[PATHLEN] = TROFFFDIR;
  48         char macrodir[PATHLEN] = TROFFMDIR;
  49         char dev[PATHLEN] = "utf";
  50         char path[PATHLEN];
  51         int i;
  52         int ret;
  53         for (i = 1; i < argc; i++) {
  54                 if (argv[i][0] != '-' || !argv[i][1])
  55                         break;
  56                 switch (argv[i][1]) {
  57                 case 'C':
  58                         n_cp = 1;
  59                         break;
  60                 case 'm':
  61                         sprintf(path, "%s/tmac.%s", macrodir, argv[i] + 2);
  62                         in_queue(path);
  63                         break;
  64                 case 'F':
  65                         strcpy(fontdir, argv[i][2] ? argv[i] + 2 : argv[++i]);
  66                         break;
  67                 case 'M':
  68                         strcpy(macrodir, argv[i][2] ? argv[i] + 2 : argv[++i]);
  69                         break;
  70                 case 'T':
  71                         strcpy(dev, argv[i][2] ? argv[i] + 2 : argv[++i]);
  72                         break;
  73                 default:
  74                         printf("%s", usage);
  75                         return 0;
  76                 }
  77         }
  78         if (dev_open(fontdir, dev)) {
  79                 fprintf(stderr, "neatroff: cannot open device %s\n", dev);
  80                 return 1;
  81         }
  82         env_init();
  83         tr_init();
  84         g_init();
  85         if (i == argc)
  86                 in_queue(NULL); /* reading from standard input */
  87         for (; i < argc; i++)
  88                 in_queue(!strcmp("-", argv[i]) ? NULL : argv[i]);
  89         str_set(map(".P"), macrodir);
  90         out("s%d\n", n_s);
  91         out("f%d\n", n_f);
  92         ret = render();
  93         out("V%d\n", n_p);
  94         env_done();
  95         dev_close();
  96         return ret;
  97 }