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 WIDTH 78
  16 #define WBUFSIZ BUFSIZ
  17
  18 #define FORMAT "=%<(nodate{text})error: %{text}%|%(putstr(pretty{text}))%>"
  19
  20 static struct swit switches[] = {
  21 #define FORMSW  0
  22         { "form formatfile", 0 },
  23 #define WIDTHSW  1
  24         { "width columns", 0 },
  25 #define VERSIONSW  2
  26         { "version", 0 },
  27 #define HELPSW  3
  28         { "help", 0 },
  29         { NULL, 0 }
  30 };
  31
  32 static struct format *fmt;
  33
  34 static int dat[5];
  35
  36 /*
  37 ** prototypes
  38 */
  39 int sc_width(void);  /* from termsbr.c */
  40
  41 /*
  42 ** static prototypes
  43 */
  44 static int process(char *, int);
  45
  46
  47 int
  48 main(int argc, char **argv)
  49 {
  50         int datep = 0, width = 0, status = 0;
  51         char *cp, *form = NULL, *nfs;
  52         char buf[BUFSIZ], **argp, **arguments;
  53         char *dates[NDATES];
  54
  55 #ifdef LOCALE
  56         setlocale(LC_ALL, "");
  57 #endif
  58         invo_name = mhbasename(argv[0]);
  59
  60         /* read user profile/context */
  61         context_read();
  62
  63         arguments = getarguments(invo_name, argc, argv, 1);
  64         argp = arguments;
  65
  66         while ((cp = *argp++)) {
  67                 if (*cp == '-') {
  68                         switch (smatch(++cp, switches)) {
  69                         case AMBIGSW:
  70                                 ambigsw(cp, switches);
  71                                 done(1);
  72                         case UNKWNSW:
  73                                 adios(NULL, "-%s unknown", cp);
  74
  75                         case HELPSW:
  76                                 snprintf(buf, sizeof(buf), "%s [switches] dates ...", invo_name);
  77                                 print_help(buf, switches, 1);
  78                                 done(1);
  79                         case VERSIONSW:
  80                                 print_version(invo_name);
  81                                 done(1);
  82
  83                         case FORMSW:
  84                                 if (!(form = *argp++) || *form == '-')
  85                                         adios(NULL, "missing argument to %s",
  86                                                         argp[-2]);
  87                                 continue;
  88
  89                         case WIDTHSW:
  90                                 if (!(cp = *argp++) || *cp == '-')
  91                                         adios(NULL, "missing argument to %s",
  92                                                         argp[-2]);
  93                                 width = atoi(cp);
  94                                 continue;
  95                         }
  96                 }
  97                 if (datep > NDATES)
  98                         adios(NULL, "more than %d dates", NDATES);
  99                 else
 100                         dates[datep++] = cp;
 101         }
 102         dates[datep] = NULL;
 103
 104         if (datep == 0)
 105                 adios(NULL, "usage: %s [switches] dates ...", invo_name);
 106
 107         /* get new format string */
 108         nfs = new_fs(form, FORMAT);
 109
 110         if (width == 0) {
 111                 if ((width = sc_width()) < WIDTH / 2)
 112                         width = WIDTH / 2;
 113                 width -= 2;
 114         }
 115         if (width > WBUFSIZ)
 116                 width = WBUFSIZ;
 117         fmt_compile(nfs, &fmt);
 118
 119         dat[0] = 0;
 120         dat[1] = 0;
 121         dat[2] = 0;
 122         dat[3] = width;
 123         dat[4] = 0;
 124
 125         for (datep = 0; dates[datep]; datep++)
 126                 status += process(dates[datep], width);
 127
 128         context_save();  /* save the context file */
 129         done(status);
 130         return 1;
 131 }
 132
 133
 134 static int
 135 process(char *date, int length)
 136 {
 137         int status = 0;
 138         char buffer[WBUFSIZ + 1];
 139         register struct comp *cptr;
 140
 141         FINDCOMP(cptr, "text");
 142         if (cptr)
 143                 cptr->c_text = date;
 144         fmt_scan(fmt, buffer, length, dat);
 145         fputs(buffer, stdout);
 146
 147         return status;
 148 }