From 5454ddbc9b6be1b3a8fe1018bda697ac2b33b202 Mon Sep 17 00:00:00 2001 From: Christian Hitz Date: Wed, 12 Oct 2011 09:32:05 +0200 Subject: nand: Sanitize ONFI strings. [backport from linux commit 02f8c6aee8df3cdc935e9bdd4f2d020306035dbe] This is part of the synchronization with the nand driver to the Linux 3.0 state. Signed-off-by: Christian Hitz Cc: Scott Wood Signed-off-by: Scott Wood --- lib/string.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) (limited to 'lib/string.c') diff --git a/lib/string.c b/lib/string.c index 2c4f0ec9a1..c3ad055e2c 100644 --- a/lib/string.c +++ b/lib/string.c @@ -214,6 +214,45 @@ char * strrchr(const char * s, int c) } #endif + +/** + * skip_spaces - Removes leading whitespace from @str. + * @str: The string to be stripped. + * + * Returns a pointer to the first non-whitespace character in @str. + */ +char *skip_spaces(const char *str) +{ + while (isspace(*str)) + ++str; + return (char *)str; +} + +/** + * strim - 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 *strim(char *s) +{ + size_t size; + char *end; + + s = skip_spaces(s); + size = strlen(s); + if (!size) + return s; + + end = s + size - 1; + while (end >= s && isspace(*end)) + end--; + *(end + 1) = '\0'; + + return s; +} #ifndef __HAVE_ARCH_STRLEN /** * strlen - Find the length of a string -- cgit v1.2.1