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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 "sbr/charstring.h"
#include "sbr/fmt_new.h"
#include "sbr/getarguments.h"
#include "sbr/smatch.h"
#include "sbr/context_save.h"
#include "sbr/ambigsw.h"
#include "sbr/print_version.h"
#include "sbr/print_help.h"
#include "sbr/error.h"
#include "sbr/done.h"
#include "sbr/utils.h"
#include "sbr/fmt_compile.h"
#include "sbr/fmt_scan.h"
#include "h/tws.h"
#include "sbr/terminal.h"
#include "sbr/globals.h"
#define NDATES 100
#define WIDTH 78
#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 = -1, status = 0;
char *cp, *form = NULL, *format = NULL, *nfs;
char buf[BUFSIZ], **argp;
char *dates[NDATES + 1]; /* Includes terminating NULL. */
if (nmh_init(argv[0], true, false)) { return 1; }
argp = getarguments (invo_name, argc, argv, 1);
while ((cp = *argp++)) {
if (*cp == '-') {
switch (smatch (++cp, switches)) {
case AMBIGSW:
ambigsw (cp, switches);
done (1);
case UNKWNSW:
die("-%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 == '-')
die("missing argument to %s", argp[-2]);
format = NULL;
continue;
case FMTSW:
if (!(format = *argp++) || *format == '-')
die("missing argument to %s", argp[-2]);
form = NULL;
continue;
case WIDTHSW:
if (!(cp = *argp++) || *cp == '-')
die("missing argument to %s", argp[-2]);
width = atoi (cp);
continue;
}
}
if (datep == NDATES)
die("more than %d dates", NDATES);
dates[datep++] = cp;
}
dates[datep] = NULL;
if (datep == 0)
die("usage: %s [switches] dates ...", invo_name);
/* get new format string */
nfs = new_fs (form, format, FORMAT);
if (width == -1) {
if ((width = sc_width ()) < WIDTH / 2) {
/* Default: width of the terminal, but at least WIDTH/2. */
width = WIDTH / 2;
}
width -= 2;
} else if (width == 0) {
/* Unlimited width. */
width = INT_MAX;
}
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;
charstring_t scanl =
charstring_create (length < NMH_BUFSIZ ? length : NMH_BUFSIZ);
struct comp *cptr;
cptr = fmt_findcomp ("text");
if (cptr) {
free(cptr->c_text);
cptr->c_text = mh_xstrdup(date);
}
fmt_scan (fmt, scanl, length, dat, NULL);
fputs (charstring_buffer (scanl), stdout);
charstring_free (scanl);
return status;
}
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