util_arg.c
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上传日期:2022-05-23
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文件大小:4k
- /*-
- * See the file LICENSE for redistribution information.
- *
- * Copyright (c) 2001-2002
- * Sleepycat Software. All rights reserved.
- */
- #include "db_config.h"
- #ifndef lint
- static const char revid[] = "$Id: util_arg.c,v 1.4 2002/02/01 18:15:30 bostic Exp $";
- #endif /* not lint */
- #ifndef NO_SYSTEM_INCLUDES
- #include <sys/types.h>
- #endif
- #include "db_int.h"
- static char *__db_strsep __P((char **, const char *));
- /*
- * __db_util_arg --
- * Convert a string into an argc/argv pair.
- *
- * PUBLIC: int __db_util_arg __P((char *, char *, int *, char ***));
- */
- int
- __db_util_arg(arg0, str, argcp, argvp)
- char *arg0, *str, ***argvp;
- int *argcp;
- {
- int n, ret;
- char **ap, **argv;
- #define MAXARGS 25
- if ((ret =
- __os_malloc(NULL, (MAXARGS + 1) * sizeof(char **), &argv)) != 0)
- return (ret);
- ap = argv;
- *ap++ = arg0;
- for (n = 1; (*ap = __db_strsep(&str, " t")) != NULL;)
- if (**ap != ' ') {
- ++ap;
- if (++n == MAXARGS)
- break;
- }
- *ap = NULL;
- *argcp = ap - argv;
- *argvp = argv;
- return (0);
- }
- /*-
- * Copyright (c) 1990, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
- /*
- * Get next token from string *stringp, where tokens are possibly-empty
- * strings separated by characters from delim.
- *
- * Writes NULs into the string at *stringp to end tokens.
- * delim need not remain constant from call to call.
- * On return, *stringp points past the last NUL written (if there might
- * be further tokens), or is NULL (if there are definitely no more tokens).
- *
- * If *stringp is NULL, strsep returns NULL.
- */
- static char *
- __db_strsep(stringp, delim)
- char **stringp;
- const char *delim;
- {
- const char *spanp;
- int c, sc;
- char *s, *tok;
- if ((s = *stringp) == NULL)
- return (NULL);
- for (tok = s;;) {
- c = *s++;
- spanp = delim;
- do {
- if ((sc = *spanp++) == c) {
- if (c == 0)
- s = NULL;
- else
- s[-1] = 0;
- *stringp = s;
- return (tok);
- }
- } while (sc != 0);
- }
- /* NOTREACHED */
- }