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/*
* dp.c -- parse dates 822-style
*
* This code is Copyright (c) 2002, by the authors of nmh. See the
* COPYRIGHT file in the root directory of the nmh distribution for
* complete copyright information.
*/
#include <h/mh.h>
#include <h/fmt_scan.h>
#include <h/tws.h>
#define NDATES 100
#define WIDTH 78
#define WBUFSIZ BUFSIZ
#define FORMAT "%<(nodate{text})error: %{text}%|%(putstr(pretty{text}))%>"
#define DP_SWITCHES \
X("form formatfile", 0, FORMSW) \
X("format string", 5, FMTSW) \
X("width columns", 0, WIDTHSW) \
X("version", 0, VERSIONSW) \
X("help", 0, HELPSW) \
#define X(sw, minchars, id) id,
DEFINE_SWITCH_ENUM(DP);
#undef X
#define X(sw, minchars, id) { sw, minchars, id },
DEFINE_SWITCH_ARRAY(DP, switches);
#undef X
static struct format *fmt;
static int dat[5];
/*
* 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];
if (nmh_init(argv[0], 1)) { return 1; }
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 (0);
case VERSIONSW:
print_version(invo_name);
done (0);
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, 1);
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 */
fmt_free (fmt, 1);
done (status);
return 1;
}
static int
process (char *date, int length)
{
int status = 0;
char buffer[WBUFSIZ + 1];
register struct comp *cptr;
cptr = fmt_findcomp ("text");
if (cptr) {
if (cptr->c_text)
free(cptr->c_text);
cptr->c_text = getcpy(date);
}
fmt_scan (fmt, buffer, sizeof buffer - 1, length, dat, NULL);
fputs (buffer, stdout);
return status;
}
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