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 = mhbasename(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 ...", 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",
  88                                                         argp[-2]);
  89                                 format = NULL;
  90                                 continue;
  91                         case FMTSW:
  92                                 if (!(format = *argp++) || *format == '-')
  93                                         adios(NULL, "missing argument to %s",
  94                                                         argp[-2]);
  95                                 form = NULL;
  96                                 continue;
  97
  98                         case WIDTHSW:
  99                                 if (!(cp = *argp++) || *cp == '-')
 100                                         adios(NULL, "missing argument to %s",
 101                                                         argp[-2]);
 102                                 width = atoi(cp);
 103                                 continue;
 104                         }
 105                 }
 106                 if (datep > NDATES)
 107                         adios(NULL, "more than %d dates", NDATES);
 108                 else
 109                         dates[datep++] = cp;
 110         }
 111         dates[datep] = NULL;
 112
 113         if (datep == 0)
 114                 adios(NULL, "usage: %s [switches] dates ...", invo_name);
 115
 116         /* get new format string */
 117         nfs = new_fs(form, format, FORMAT);
 118
 119         if (width == 0) {
 120                 if ((width = sc_width()) < WIDTH / 2)
 121                         width = WIDTH / 2;
 122                 width -= 2;
 123         }
 124         if (width > WBUFSIZ)
 125                 width = WBUFSIZ;
 126         fmt_compile(nfs, &fmt);
 127
 128         dat[0] = 0;
 129         dat[1] = 0;
 130         dat[2] = 0;
 131         dat[3] = width;
 132         dat[4] = 0;
 133
 134         for (datep = 0; dates[datep]; datep++)
 135                 status += process(dates[datep], width);
 136
 137         context_save();  /* save the context file */
 138         done(status);
 139         return 1;
 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 }