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         setlocale(LC_ALL, "");
  46         invo_name = mhbasename(argv[0]);
  47
  48         /* read user profile/context */
  49         context_read();
  50
  51         arguments = getarguments(invo_name, argc, argv, 1);
  52         argp = arguments;
  53
  54         while ((cp = *argp++)) {
  55                 if (*cp == '-') {
  56                         switch (smatch(++cp, switches)) {
  57                         case AMBIGSW:
  58                                 ambigsw(cp, switches);
  59                                 /* sysexits.h EX_USAGE */
  60                                 exit(1);
  61                         case UNKWNSW:
  62                                 adios(NULL, "-%s unknown", cp);
  63
  64                         case HELPSW:
  65                                 snprintf(buf, sizeof(buf), "%s [switches] dates ...", invo_name);
  66                                 print_help(buf, switches, 1);
  67                                 exit(0);
  68                         case VERSIONSW:
  69                                 print_version(invo_name);
  70                                 exit(0);
  71
  72                         case FORMSW:
  73                                 if (!(form = *argp++) || *form == '-')
  74                                         adios(NULL, "missing argument to %s",
  75                                                         argp[-2]);
  76                                 continue;
  77
  78                         }
  79                 }
  80                 if (datep > NDATES)
  81                         adios(NULL, "more than %d dates", NDATES);
  82                 else
  83                         dates[datep++] = cp;
  84         }
  85         dates[datep] = NULL;
  86
  87         if (datep == 0)
  88                 adios(NULL, "usage: %s [switches] dates ...", invo_name);
  89
  90         /* get new format string */
  91         fmtstr = new_fs(form, FORMAT);
  92
  93         fmt_compile(fmtstr, &fmt);
  94
  95         dat[0] = 0;
  96         dat[1] = 0;
  97         dat[2] = 0;
  98         dat[3] = BUFSIZ;
  99         dat[4] = 0;
 100
 101         for (datep = 0; dates[datep]; datep++)
 102                 status += process(dates[datep]);
 103
 104         context_save();  /* save the context file */
 105         return status;
 106 }
 107
 108
 109 static int
 110 process(char *date)
 111 {
 112         int status = 0;
 113         char buffer[BUFSIZ + 1];
 114         register struct comp *cptr;
 115
 116         FINDCOMP(cptr, "text");
 117         if (cptr)
 118                 cptr->c_text = date;
 119         fmt_scan(fmt, buffer, BUFSIZ, dat);
 120         fputs(buffer, stdout);
 121
 122         return status;
 123 }