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Add strcasecmp() and strncasecmp()

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strncasecmp() is present as strnicmp() but disabled. Make it available
and define strcasecmp() also. There is a only a small performance penalty
to having strcasecmp() call strncasecmp(), so do this instead of a
standalone function, to save code space.

Update the prototype in arch-specific headers as needed to avoid warnings.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2012-12-05 14:46:35 +00:00
committed by Tom Rini
parent ec7381fbf6
commit b1f17bf5ff
5 changed files with 20 additions and 9 deletions
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16
lib/string.c
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@@ -21,14 +21,13 @@
#include <malloc.h>
#if 0 /* not used - was: #ifndef __HAVE_ARCH_STRNICMP */
/**
* strnicmp - Case insensitive, length-limited string comparison
* strncasecmp - Case insensitive, length-limited string comparison
* @s1: One string
* @s2: The other string
* @len: the maximum number of characters to compare
*/
int strnicmp(const char *s1, const char *s2, size_t len)
int strncasecmp(const char *s1, const char *s2, size_t len)
{
/* Yes, Virginia, it had better be unsigned */
unsigned char c1, c2;
@@ -52,7 +51,16 @@ int strnicmp(const char *s1, const char *s2, size_t len)
}
return (int)c1 - (int)c2;
}
#endif
/**
* strcasecmp - Case insensitive string comparison
* @s1: One string
* @s2: The other string
*/
int strcasecmp(const char *s1, const char *s2)
{
return strncasecmp(s1, s2, -1U);
}
char * ___strtok;