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author | Ben Cheng <bccheng@google.com> | 2013-03-28 11:14:20 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2013-03-28 12:40:33 -0700 |
commit | af0c51ac87ab2a87caa03fa108f0d164987a2764 (patch) | |
tree | 4b8b470f7c5b69642fdab8d0aa1fbc148d02196b /gcc-4.8/libiberty/strstr.c | |
parent | d87cae247d39ebf4f5a6bf25c932a14d2fdb9384 (diff) | |
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[GCC 4.8] Initial check-in of GCC 4.8.0
Change-Id: I0719d8a6d0f69b367a6ab6f10eb75622dbf12771
Diffstat (limited to 'gcc-4.8/libiberty/strstr.c')
-rw-r--r-- | gcc-4.8/libiberty/strstr.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/gcc-4.8/libiberty/strstr.c b/gcc-4.8/libiberty/strstr.c new file mode 100644 index 000000000..60902ea40 --- /dev/null +++ b/gcc-4.8/libiberty/strstr.c @@ -0,0 +1,41 @@ +/* Simple implementation of strstr for systems without it. + This function is in the public domain. */ + +/* + +@deftypefn Supplemental char* strstr (const char *@var{string}, const char *@var{sub}) + +This function searches for the substring @var{sub} in the string +@var{string}, not including the terminating null characters. A pointer +to the first occurrence of @var{sub} is returned, or @code{NULL} if the +substring is absent. If @var{sub} points to a string with zero +length, the function returns @var{string}. + +@end deftypefn + + +*/ + + +/* FIXME: The above description is ANSI compiliant. This routine has not + been validated to comply with it. -fnf */ + +#include <stddef.h> + +extern char *strchr (const char *, int); +extern int strncmp (const void *, const void *, size_t); +extern size_t strlen (const char *); + +char * +strstr (const char *s1, const char *s2) +{ + const char *p = s1; + const size_t len = strlen (s2); + + for (; (p = strchr (p, *s2)) != 0; p++) + { + if (strncmp (p, s2, len) == 0) + return (char *)p; + } + return (0); +} |