/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*        All Rights Reserved   */

/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved. The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#include <stdio.h>
#include <ctype.h>
#include <locale.h>

static void instruct(void);
static void map_lower(char *);

/* look in biblio for record matching keywords */
int
main(int argc, char **argv)
{
        FILE *hfp, *fopen(), *popen();
        char s[BUFSIZ], hunt[64];

        (void) setlocale(LC_ALL, "");

#if !defined(TEXT_DOMAIN)
#define TEXT_DOMAIN "SYS_TEST"
#endif
        (void) textdomain(TEXT_DOMAIN);

        if (argc == 1 || argc > 2) {
                fputs(gettext("Usage:  lookbib database\n\
\tfinds citations specified on standard input\n"), stderr);
                exit(1);
        }
        sprintf(s, "%s.ia", argv[1]);
        if (access(s, 0) == -1) {
                sprintf(s, "%s", argv[1]);
                if (access(s, 0) == -1) {
                        perror(s);
                        fprintf(stderr, gettext("\tNeither index file %s.ia \
nor reference file %s found\n"), s, s);
                        exit(1);
                }
        }
        sprintf(hunt, "/usr/lib/refer/hunt %s", argv[1]);
        if (isatty(fileno(stdin))) {
                fprintf(stderr, gettext("Instructions? "));
                fgets(s, BUFSIZ, stdin);
                if (*s == 'y')
                        instruct();
        }
again:
        fprintf(stderr, "> ");
        if (fgets(s, BUFSIZ, stdin)) {
                if (*s == '\n')
                        goto again;
                if (strlen(s) <= 3)
                        goto again;
                if ((hfp = popen(hunt, "w")) == NULL) {
                        perror(gettext("lookbib: /usr/lib/refer/hunt"));
                        exit(1);
                }
                map_lower(s);
                fputs(s, hfp);
                pclose(hfp);
                goto again;
        }
        fprintf(stderr, gettext("EOT\n"));
        return (0);
}

static void
map_lower(char *s)              /* map string s to lower case */
{
        for (; *s; ++s)
                if (isupper(*s))
                        *s = tolower(*s);
}

static void
instruct(void)
{
        fputs(gettext(
"\nType keywords (such as author and date) after the > prompt.\n\
References with those keywords are printed if they exist;\n\
\tif nothing matches you are given another prompt.\n\
To quit lookbib, press CTRL-d after the > prompt.\n\n"), stderr);

}