diplodocus.org Git - nmh/blob - uip/dp.c

   1
   2 /*
   3  * dp.c -- parse dates 822-style
   4  *
   5  * $Id$
   6  *
   7  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   8  * COPYRIGHT file in the root directory of the nmh distribution for
   9  * complete copyright information.
  10  */
  11
  12 #include <h/mh.h>
  13 #include <h/fmt_scan.h>
  14 #include <h/tws.h>
  15
  16 #define NDATES 100
  17
  18 #define WIDTH 78
  19 #define WBUFSIZ BUFSIZ
  20
  21 #define FORMAT "%<(nodate{text})error: %{text}%|%(putstr(pretty{text}))%>"
  22
  23 static struct swit switches[] = {
  24 #define FORMSW                0
  25     { "form formatfile", 0 },
  26 #define FMTSW                 1
  27     { "format string", 5 },
  28 #define WIDTHSW               2
  29     { "width columns", 0 },
  30 #define VERSIONSW             3
  31     { "version", 0 },
  32 #define HELPSW                4
  33     { "help", 0 },
  34     { NULL, 0 }
  35 };
  36
  37 static struct format *fmt;
  38
  39 static int dat[5];
  40
  41 /*
  42  * prototypes
  43  */
  44 int sc_width (void);  /* from termsbr.c */
  45
  46 /*
  47  * static prototypes
  48  */
  49 static int process (char *, int);
  50
  51
  52 int
  53 main (int argc, char **argv)
  54 {
  55     int datep = 0, width = 0, status = 0;
  56     char *cp, *form = NULL, *format = NULL, *nfs;
  57     char buf[BUFSIZ], **argp, **arguments;
  58     char *dates[NDATES];
  59
  60 #ifdef LOCALE
  61     setlocale(LC_ALL, "");
  62 #endif
  63     invo_name = r1bindex (argv[0], '/');
  64
  65     /* read user profile/context */
  66     context_read();
  67
  68     arguments = getarguments (invo_name, argc, argv, 1);
  69     argp = arguments;
  70
  71     while ((cp = *argp++)) {
  72         if (*cp == '-') {
  73             switch (smatch (++cp, switches)) {
  74                 case AMBIGSW:
  75                     ambigsw (cp, switches);
  76                     done (1);
  77                 case UNKWNSW:
  78                     adios (NULL, "-%s unknown", cp);
  79
  80                 case HELPSW:
  81                     snprintf (buf, sizeof(buf), "%s [switches] dates ...",
  82                         invo_name);
  83                     print_help (buf, switches, 1);
  84                     done (1);
  85                 case VERSIONSW:
  86                     print_version(invo_name);
  87                     done (1);
  88
  89                 case FORMSW:
  90                     if (!(form = *argp++) || *form == '-')
  91                         adios (NULL, "missing argument to %s", argp[-2]);
  92                     format = NULL;
  93                     continue;
  94                 case FMTSW:
  95                     if (!(format = *argp++) || *format == '-')
  96                         adios (NULL, "missing argument to %s", argp[-2]);
  97                     form = NULL;
  98                     continue;
  99
 100                 case WIDTHSW:
 101                     if (!(cp = *argp++) || *cp == '-')
 102                         adios (NULL, "missing argument to %s", argp[-2]);
 103                     width = atoi (cp);
 104                     continue;
 105             }
 106         }
 107         if (datep > NDATES)
 108             adios (NULL, "more than %d dates", NDATES);
 109         else
 110             dates[datep++] = cp;
 111     }
 112     dates[datep] = NULL;
 113
 114     if (datep == 0)
 115         adios (NULL, "usage: %s [switches] dates ...", invo_name);
 116
 117     /* get new format string */
 118     nfs = new_fs (form, format, FORMAT);
 119
 120     if (width == 0) {
 121         if ((width = sc_width ()) < WIDTH / 2)
 122             width = WIDTH / 2;
 123         width -= 2;
 124     }
 125     if (width > WBUFSIZ)
 126         width = WBUFSIZ;
 127     fmt_compile (nfs, &fmt);
 128
 129     dat[0] = 0;
 130     dat[1] = 0;
 131     dat[2] = 0;
 132     dat[3] = width;
 133     dat[4] = 0;
 134
 135     for (datep = 0; dates[datep]; datep++)
 136         status += process (dates[datep], width);
 137
 138     context_save ();    /* save the context file */
 139     return done (status);
 140 }
 141
 142
 143 static int
 144 process (char *date, int length)
 145 {
 146     int status = 0;
 147     char buffer[WBUFSIZ + 1];
 148     register struct comp *cptr;
 149
 150     FINDCOMP (cptr, "text");
 151     if (cptr)
 152         cptr->c_text = date;
 153     fmt_scan (fmt, buffer, length, dat);
 154     fputs (buffer, stdout);
 155
 156     return status;
 157 }