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", 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         done(status);
 136         return 1;
 137 }
 138
 139
 140 static int
 141 process(char *date, int length)
 142 {
 143         int status = 0;
 144         char buffer[WBUFSIZ + 1];
 145         register struct comp *cptr;
 146
 147         FINDCOMP(cptr, "text");
 148         if (cptr)
 149                 cptr->c_text = date;
 150         fmt_scan(fmt, buffer, length, dat);
 151         fputs(buffer, stdout);
 152
 153         return status;
 154 }