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author | Pekka Enberg <penberg@cs.helsinki.fi> | 2006-06-23 02:05:44 -0700 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-23 07:43:06 -0700 |
commit | 481fad483487ea967fe20bbc9e565d787f7bf20f (patch) | |
tree | 3a76336443129975d9f7ba99f9a9ea1c494315e5 /lib | |
parent | 3fa2164d03fb7af17fcfe4f8800dd754fbd99ff7 (diff) | |
download | linux-next-481fad483487ea967fe20bbc9e565d787f7bf20f.tar.gz |
[PATCH] strstrip() API
Add a new strstrip() function to lib/string.c for removing leading and
trailing whitespace from a string.
Cc: Michael Holzheu <holzheu@de.ibm.com>
Acked-by: Ingo Oeser <ioe-lkml@rameria.de>
Acked-by: Joern Engel <joern@wohnheim.fh-wedel.de>
Cc: Corey Minyard <minyard@acm.org>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Acked-by: Michael Holzheu <HOLZHEU@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'lib')
-rw-r--r-- | lib/string.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/lib/string.c b/lib/string.c index 064f6315b1c3..63077267367e 100644 --- a/lib/string.c +++ b/lib/string.c @@ -301,6 +301,36 @@ char *strnchr(const char *s, size_t count, int c) EXPORT_SYMBOL(strnchr); #endif +/** + * strstrip - Removes leading and trailing whitespace from @s. + * @s: The string to be stripped. + * + * Note that the first trailing whitespace is replaced with a %NUL-terminator + * in the given string @s. Returns a pointer to the first non-whitespace + * character in @s. + */ +char *strstrip(char *s) +{ + size_t size; + char *end; + + size = strlen(s); + + if (!size) + return s; + + end = s + size - 1; + while (end != s && isspace(*end)) + end--; + *(end + 1) = '\0'; + + while (*s && isspace(*s)) + s++; + + return s; +} +EXPORT_SYMBOL(strstrip); + #ifndef __HAVE_ARCH_STRLEN /** * strlen - Find the length of a string |