git.marmaro.de Git - mmh/blob - uip/dp.c

   1 /*
   2 ** dp.c -- parse dates 822-style
   3 **
   4 ** This code is Copyright (c) 2002, by the authors of nmh.  See the
   5 ** COPYRIGHT file in the root directory of the nmh distribution for
   6 ** complete copyright information.
   7 */
   8
   9 #include <h/mh.h>
  10 #include <h/fmt_scan.h>
  11 #include <h/tws.h>
  12 #include <locale.h>
  13
  14 #define NDATES 100
  15
  16 #define FORMAT "=%<(nodate{text})error: %{text}%|%(putstr(pretty{text}))%>"
  17
  18 static struct swit switches[] = {
  19 #define FORMSW  0
  20         { "form formatfile", 0 },
  21 #define VERSIONSW  1
  22         { "Version", 0 },
  23 #define HELPSW  2
  24         { "help", 0 },
  25         { NULL, 0 }
  26 };
  27
  28 static struct format *fmt;
  29
  30 static int dat[5];
  31
  32 /*
  33 ** static prototypes
  34 */
  35 static int process(char *);
  36
  37
  38 int
  39 main(int argc, char **argv)
  40 {
  41         int datep = 0, status = 0;
  42         char *cp, *form = NULL, *fmtstr;
  43         char buf[BUFSIZ], **argp, **arguments;
  44         char *dates[NDATES];
  45
  46         setlocale(LC_ALL, "");
  47         invo_name = mhbasename(argv[0]);
  48
  49         /* read user profile/context */
  50         context_read();
  51
  52         arguments = getarguments(invo_name, argc, argv, 1);
  53         argp = arguments;
  54
  55         while ((cp = *argp++)) {
  56                 if (*cp == '-') {
  57                         switch (smatch(++cp, switches)) {
  58                         case AMBIGSW:
  59                                 ambigsw(cp, switches);
  60                                 /* sysexits.h EX_USAGE */
  61                                 exit(1);
  62                         case UNKWNSW:
  63                                 adios(NULL, "-%s unknown", cp);
  64
  65                         case HELPSW:
  66                                 snprintf(buf, sizeof(buf), "%s [switches] dates ...", invo_name);
  67                                 print_help(buf, switches, 1);
  68                                 exit(0);
  69                         case VERSIONSW:
  70                                 print_version(invo_name);
  71                                 exit(0);
  72
  73                         case FORMSW:
  74                                 if (!(form = *argp++) || *form == '-')
  75                                         adios(NULL, "missing argument to %s",
  76                                                         argp[-2]);
  77                                 continue;
  78
  79                         }
  80                 }
  81                 if (datep > NDATES)
  82                         adios(NULL, "more than %d dates", NDATES);
  83                 else
  84                         dates[datep++] = cp;
  85         }
  86         dates[datep] = NULL;
  87
  88         if (datep == 0)
  89                 adios(NULL, "usage: %s [switches] dates ...", invo_name);
  90
  91         /* get new format string */
  92         fmtstr = new_fs(form, FORMAT);
  93
  94         fmt_compile(fmtstr, &fmt);
  95
  96         dat[0] = 0;
  97         dat[1] = 0;
  98         dat[2] = 0;
  99         dat[3] = BUFSIZ;
 100         dat[4] = 0;
 101
 102         for (datep = 0; dates[datep]; datep++)
 103                 status += process(dates[datep]);
 104
 105         context_save();  /* save the context file */
 106         return status;
 107 }
 108
 109
 110 static int
 111 process(char *date)
 112 {
 113         int status = 0;
 114         char buffer[BUFSIZ + 1];
 115         register struct comp *cptr;
 116
 117         FINDCOMP(cptr, "text");
 118         if (cptr)
 119                 cptr->c_text = date;
 120         fmt_scan(fmt, buffer, BUFSIZ, dat);
 121         fputs(buffer, stdout);
 122
 123         return status;
 124 }