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

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