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
  13 #define NDATES 100
  14
  15 #define FORMAT "=%<(nodate{text})error: %{text}%|%(putstr(pretty{text}))%>"
  16
  17 static struct swit switches[] = {
  18 #define FORMSW  0
  19         { "form formatfile", 0 },
  20 #define VERSIONSW  1
  21         { "version", 0 },
  22 #define HELPSW  2
  23         { "help", 0 },
  24         { NULL, 0 }
  25 };
  26
  27 static struct format *fmt;
  28
  29 static int dat[5];
  30
  31 /*
  32 ** static prototypes
  33 */
  34 static int process(char *);
  35
  36
  37 int
  38 main(int argc, char **argv)
  39 {
  40         int datep = 0, status = 0;
  41         char *cp, *form = NULL, *fmtstr;
  42         char buf[BUFSIZ], **argp, **arguments;
  43         char *dates[NDATES];
  44
  45 #ifdef LOCALE
  46         setlocale(LC_ALL, "");
  47 #endif
  48         invo_name = mhbasename(argv[0]);
  49
  50         /* read user profile/context */
  51         context_read();
  52
  53         arguments = getarguments(invo_name, argc, argv, 1);
  54         argp = arguments;
  55
  56         while ((cp = *argp++)) {
  57                 if (*cp == '-') {
  58                         switch (smatch(++cp, switches)) {
  59                         case AMBIGSW:
  60                                 ambigsw(cp, switches);
  61                                 done(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                                 done(1);
  69                         case VERSIONSW:
  70                                 print_version(invo_name);
  71                                 done(1);
  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         done(status);
 107         return 1;
 108 }
 109
 110
 111 static int
 112 process(char *date)
 113 {
 114         int status = 0;
 115         char buffer[BUFSIZ + 1];
 116         register struct comp *cptr;
 117
 118         FINDCOMP(cptr, "text");
 119         if (cptr)
 120                 cptr->c_text = date;
 121         fmt_scan(fmt, buffer, BUFSIZ, dat);
 122         fputs(buffer, stdout);
 123
 124         return status;
 125 }