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 FMTSW  1
  24         { "format string", 5 },
  25 #define WIDTHSW  2
  26         { "width columns", 0 },
  27 #define VERSIONSW  3
  28         { "version", 0 },
  29 #define HELPSW  4
  30         { "help", 0 },
  31         { NULL, 0 }
  32 };
  33
  34 static struct format *fmt;
  35
  36 static int dat[5];
  37
  38 /*
  39 ** prototypes
  40 */
  41 int sc_width (void);  /* from termsbr.c */
  42
  43 /*
  44 ** static prototypes
  45 */
  46 static int process (char *, int);
  47
  48
  49 int
  50 main (int argc, char **argv)
  51 {
  52         int datep = 0, width = 0, status = 0;
  53         char *cp, *form = NULL, *format = NULL, *nfs;
  54         char buf[BUFSIZ], **argp, **arguments;
  55         char *dates[NDATES];
  56
  57 #ifdef LOCALE
  58         setlocale(LC_ALL, "");
  59 #endif
  60         invo_name = r1bindex (argv[0], '/');
  61
  62         /* read user profile/context */
  63         context_read();
  64
  65         arguments = getarguments (invo_name, argc, argv, 1);
  66         argp = arguments;
  67
  68         while ((cp = *argp++)) {
  69                 if (*cp == '-') {
  70                         switch (smatch (++cp, switches)) {
  71                                 case AMBIGSW:
  72                                         ambigsw (cp, switches);
  73                                         done (1);
  74                                 case UNKWNSW:
  75                                         adios (NULL, "-%s unknown", cp);
  76
  77                                 case HELPSW:
  78                                         snprintf (buf, sizeof(buf), "%s [switches] dates ...",
  79                                                 invo_name);
  80                                         print_help (buf, switches, 1);
  81                                         done (1);
  82                                 case VERSIONSW:
  83                                         print_version(invo_name);
  84                                         done (1);
  85
  86                                 case FORMSW:
  87                                         if (!(form = *argp++) || *form == '-')
  88                                                 adios (NULL, "missing argument to %s", argp[-2]);
  89                                         format = NULL;
  90                                         continue;
  91                                 case FMTSW:
  92                                         if (!(format = *argp++) || *format == '-')
  93                                                 adios (NULL, "missing argument to %s", argp[-2]);
  94                                         form = NULL;
  95                                         continue;
  96
  97                                 case WIDTHSW:
  98                                         if (!(cp = *argp++) || *cp == '-')
  99                                                 adios (NULL, "missing argument to %s", argp[-2]);
 100                                         width = atoi (cp);
 101                                         continue;
 102                         }
 103                 }
 104                 if (datep > NDATES)
 105                         adios (NULL, "more than %d dates", NDATES);
 106                 else
 107                         dates[datep++] = cp;
 108         }
 109         dates[datep] = NULL;
 110
 111         if (datep == 0)
 112                 adios (NULL, "usage: %s [switches] dates ...", invo_name);
 113
 114         /* get new format string */
 115         nfs = new_fs (form, format, FORMAT);
 116
 117         if (width == 0) {
 118                 if ((width = sc_width ()) < WIDTH / 2)
 119                         width = WIDTH / 2;
 120                 width -= 2;
 121         }
 122         if (width > WBUFSIZ)
 123                 width = WBUFSIZ;
 124         fmt_compile (nfs, &fmt);
 125
 126         dat[0] = 0;
 127         dat[1] = 0;
 128         dat[2] = 0;
 129         dat[3] = width;
 130         dat[4] = 0;
 131
 132         for (datep = 0; dates[datep]; datep++)
 133                 status += process (dates[datep], width);
 134
 135         context_save ();  /* save the context file */
 136         done (status);
 137         return 1;
 138 }
 139
 140
 141 static int
 142 process (char *date, int length)
 143 {
 144         int status = 0;
 145         char buffer[WBUFSIZ + 1];
 146         register struct comp *cptr;
 147
 148         FINDCOMP (cptr, "text");
 149         if (cptr)
 150                 cptr->c_text = date;
 151         fmt_scan (fmt, buffer, length, dat);
 152         fputs (buffer, stdout);
 153
 154         return status;
 155 }