C++ (Cpp) cgetfirst примеры использования

Пример #1

Файл: printcap.c Проект: 2asoft/freebsd

/*
 * Scan through the database of printers using cgetfirst/cgetnext.
 * Return false of error or end-of-database; else true.
 */
int
firstprinter(struct printer *pp, int *error)
{
	int status;
	char *bp;

	init_printer(pp);
	status = cgetfirst(&bp, printcapdb);
	if (firstnextmap(&status) == 0) {
		if (error)
			*error = status;
		return 0;
	}
	if (error)
		*error = status;
	status = getprintcap_int(bp, pp);
	free(bp);
	if (error && status)
		*error = status;
	return 1;
}

Пример #2

Файл: toe.c Проект: AaronDP/ncurses-5.9_adbshell

static int
typelist(int eargc, char *eargv[],
	 bool verbosity,
	 void (*hook) (const char *, TERMTYPE *tp))
/* apply a function to each entry in given terminfo directories */
{
    int i;

    for (i = 0; i < eargc; i++) {
#if USE_DATABASE
	if (_nc_is_dir_path(eargv[i])) {
	    char *cwd_buf = 0;
	    DIR *termdir;
	    DIRENT *subdir;

	    if ((termdir = opendir(eargv[i])) == 0) {
		(void) fflush(stdout);
		(void) fprintf(stderr,
			       "%s: can't open terminfo directory %s\n",
			       _nc_progname, eargv[i]);
		return (EXIT_FAILURE);
	    } else if (verbosity)
		(void) printf("#\n#%s:\n#\n", eargv[i]);

	    while ((subdir = readdir(termdir)) != 0) {
		size_t len = NAMLEN(subdir);
		size_t cwd_len = len + strlen(eargv[i]) + 3;
		char name_1[PATH_MAX];
		DIR *entrydir;
		DIRENT *entry;

		cwd_buf = typeRealloc(char, cwd_len, cwd_buf);
		if (cwd_buf == 0)
		    failed("realloc cwd_buf");

		assert(cwd_buf != 0);

		strncpy(name_1, subdir->d_name, len)[len] = '\0';
		if (isDotname(name_1))
		    continue;

		(void) sprintf(cwd_buf, "%s/%.*s/", eargv[i], (int) len, name_1);
		if (chdir(cwd_buf) != 0)
		    continue;

		entrydir = opendir(".");
		if (entrydir == 0) {
		    perror(cwd_buf);
		    continue;
		}
		while ((entry = readdir(entrydir)) != 0) {
		    char name_2[PATH_MAX];
		    TERMTYPE lterm;
		    char *cn;
		    int status;

		    len = NAMLEN(entry);
		    strncpy(name_2, entry->d_name, len)[len] = '\0';
		    if (isDotname(name_2) || !_nc_is_file_path(name_2))
			continue;

		    status = _nc_read_file_entry(name_2, &lterm);
		    if (status <= 0) {
			(void) fflush(stdout);
			(void) fprintf(stderr,
				       "%s: couldn't open terminfo file %s.\n",
				       _nc_progname, name_2);
			return (EXIT_FAILURE);
		    }

		    /* only visit things once, by primary name */
		    cn = _nc_first_name(lterm.term_names);
		    if (!strcmp(cn, name_2)) {
			/* apply the selected hook function */
			(*hook) (cn, &lterm);
		    }
		    _nc_free_termtype(&lterm);
		}
		closedir(entrydir);
	    }
	    closedir(termdir);
	    if (cwd_buf != 0)
		free(cwd_buf);
	}
#if USE_HASHED_DB
	else {
	    DB *capdbp;
	    char filename[PATH_MAX];

	    if (make_db_name(filename, eargv[i], sizeof(filename))) {
		if ((capdbp = _nc_db_open(filename, FALSE)) != 0) {
		    DBT key, data;
		    int code;

		    code = _nc_db_first(capdbp, &key, &data);
		    while (code == 0) {
			TERMTYPE lterm;
			int used;
			char *have;
			char *cn;

			if (_nc_db_have_data(&key, &data, &have, &used)) {
			    if (_nc_read_termtype(&lterm, have, used) > 0) {
				/* only visit things once, by primary name */
				cn = _nc_first_name(lterm.term_names);
				/* apply the selected hook function */
				(*hook) (cn, &lterm);
				_nc_free_termtype(&lterm);
			    }
			}
			code = _nc_db_next(capdbp, &key, &data);
		    }

		    _nc_db_close(capdbp);
		}
	    }
	}
#endif
#endif
#if USE_TERMCAP
#if HAVE_BSD_CGETENT
	char *db_array[2];
	char *buffer = 0;

	if (verbosity)
	    (void) printf("#\n#%s:\n#\n", eargv[i]);

	db_array[0] = eargv[i];
	db_array[1] = 0;

	if (cgetfirst(&buffer, db_array)) {
	    show_termcap(buffer, hook);
	    free(buffer);
	    while (cgetnext(&buffer, db_array)) {
		show_termcap(buffer, hook);
		free(buffer);
	    }
	}
	cgetclose();
#else
	/* scan termcap text-file only */
	if (_nc_is_file_path(eargv[i])) {
	    char buffer[2048];
	    FILE *fp;

	    if ((fp = fopen(eargv[i], "r")) != 0) {
		while (fgets(buffer, sizeof(buffer), fp) != 0) {
		    if (*buffer == '#')
			continue;
		    if (isspace(*buffer))
			continue;
		    show_termcap(buffer, hook);
		}
		fclose(fp);
	    }
	}
#endif
#endif
    }