diff options
| -rw-r--r-- | sys/conf/files | 1 | ||||
| -rw-r--r-- | sys/libkern/strspn.c | 55 | ||||
| -rw-r--r-- | sys/sys/libkern.h | 1 |
3 files changed, 57 insertions, 0 deletions
diff --git a/sys/conf/files b/sys/conf/files index cc2d33d80b7f..a3f1a3770270 100644 --- a/sys/conf/files +++ b/sys/conf/files @@ -1252,6 +1252,7 @@ libkern/strlen.c standard libkern/strncmp.c standard libkern/strncpy.c standard libkern/strsep.c standard +libkern/strspn.c standard libkern/strtol.c standard libkern/strtoq.c standard libkern/strtoul.c standard diff --git a/sys/libkern/strspn.c b/sys/libkern/strspn.c new file mode 100644 index 000000000000..6bcdeca22552 --- /dev/null +++ b/sys/libkern/strspn.c @@ -0,0 +1,55 @@ +/* + * Copyright (c) 1989, 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. + * 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/libkern.h> + +/* + * Span the string s2 (skip characters that are in s2). + */ +size_t +strspn(s1, s2) + const char *s1; + const char *s2; +{ + const char *p = s1, *spanp; + char c, sc; + + /* + * Skip any characters in s2, excluding the terminating \0. + */ +cont: + c = *p++; + for (spanp = s2; (sc = *spanp++) != 0;) + if (sc == c) + goto cont; + return (p - 1 - s1); +} diff --git a/sys/sys/libkern.h b/sys/sys/libkern.h index 780f442664f1..348a59dc14f7 100644 --- a/sys/sys/libkern.h +++ b/sys/sys/libkern.h @@ -105,6 +105,7 @@ size_t strlen(const char *); int strncmp(const char *, const char *, size_t); char *strncpy(char * __restrict, const char * __restrict, size_t); char *strsep(char **, const char *delim); +size_t strspn(const char *, const char *); int strvalid(const char *, size_t); |