source: trunk/third/nmh/uip/dp.c @ 12455

/*
 * dp.c -- parse dates 822-style
 *
 * $Id: dp.c,v 1.1.1.1 1999-02-07 18:14:13 danw Exp $
 */

#include <h/mh.h>
#include <h/fmt_scan.h>
#include <zotnet/tws/tws.h>

#define NDATES 100

#define WIDTH 78
#define WBUFSIZ BUFSIZ

#define FORMAT "%<(nodate{text})error: %{text}%|%(putstr(pretty{text}))%>"

static struct swit switches[] = {
#define FORMSW                0
    { "form formatfile", 0 },
#define FMTSW                 1
    { "format string", 5 },
#define WIDTHSW               2
    { "width columns", 0 },
#define VERSIONSW             3
    { "version", 0 },
#define HELPSW                4
    { "help", 4 },
    { NULL, 0 }
};

static struct format *fmt;

static int dat[5];

/*
 * prototypes
 */
int sc_width (void);  /* from termsbr.c */

/*
 * static prototypes
 */
static int process (char *, int);


int
main (int argc, char **argv)
{
    int datep = 0, width = 0, status = 0;
    char *cp, *form = NULL, *format = NULL, *nfs;
    char buf[BUFSIZ], **argp, **arguments;
    char *dates[NDATES];

#ifdef LOCALE
    setlocale(LC_ALL, "");
#endif
    invo_name = r1bindex (argv[0], '/');

    /* read user profile/context */
    context_read();

    arguments = getarguments (invo_name, argc, argv, 1);
    argp = arguments;

    while ((cp = *argp++)) {
        if (*cp == '-') {
            switch (smatch (++cp, switches)) {
                case AMBIGSW: 
                    ambigsw (cp, switches);
                    done (1);
                case UNKWNSW: 
                    adios (NULL, "-%s unknown", cp);

                case HELPSW: 
                    snprintf (buf, sizeof(buf), "%s [switches] dates ...",
                        invo_name);
                    print_help (buf, switches, 1);
                    done (1);
                case VERSIONSW:
                    print_version(invo_name);
                    done (1);

                case FORMSW: 
                    if (!(form = *argp++) || *form == '-')
                        adios (NULL, "missing argument to %s", argp[-2]);
                    format = NULL;
                    continue;
                case FMTSW: 
                    if (!(format = *argp++) || *format == '-')
                        adios (NULL, "missing argument to %s", argp[-2]);
                    form = NULL;
                    continue;

                case WIDTHSW: 
                    if (!(cp = *argp++) || *cp == '-')
                        adios (NULL, "missing argument to %s", argp[-2]);
                    width = atoi (cp);
                    continue;
            }
        }
        if (datep > NDATES)
            adios (NULL, "more than %d dates", NDATES);
        else
            dates[datep++] = cp;
    }
    dates[datep] = NULL;

    if (datep == 0)
        adios (NULL, "usage: %s [switches] dates ...", invo_name);

    /* get new format string */
    nfs = new_fs (form, format, FORMAT);

    if (width == 0) {
        if ((width = sc_width ()) < WIDTH / 2)
            width = WIDTH / 2;
        width -= 2;
    }
    if (width > WBUFSIZ)
        width = WBUFSIZ;
    fmt_compile (nfs, &fmt);

    dat[0] = 0;
    dat[1] = 0;
    dat[2] = 0;
    dat[3] = width;
    dat[4] = 0;

    for (datep = 0; dates[datep]; datep++)
        status += process (dates[datep], width);

    context_save ();    /* save the context file */
    done (status);
}


static int
process (char *date, int length)
{
    int status = 0;
    char buffer[WBUFSIZ + 1];
    register struct comp *cptr;

    FINDCOMP (cptr, "text");
    if (cptr)
        cptr->c_text = date;
    fmt_scan (fmt, buffer, length, dat);
    fputs (buffer, stdout);

    return status;
}