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Add version of StringsEqualNoCase that takes two null-terminated C-strings and compares up to 'len' characters. I tend to screw up string comparison functions, so anyone who is interested please review this\!

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65236 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ted Kremenek 2009-02-21 18:25:30 +00:00
parent b5bd026a75
commit 07bf7efa0a
1 changed files with 19 additions and 0 deletions
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19
include/llvm/ADT/StringExtras.h
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@ -159,6 +159,25 @@ static inline bool StringsEqualNoCase(const std::string &LHS,
}
return RHS[LHS.size()] == 0; // Not too long?
}
/// StringsEqualNoCase - Return true if the two null-terminated C strings are
/// equal, ignoring
static inline bool StringsEqualNoCase(const char *LHS, const char *RHS,
unsigned len) {
for (unsigned i = 0; i < len; ++i) {
if (tolower(LHS[i]) != tolower(RHS[i]))
return false;
// If RHS[i] == 0 then LHS[i] == 0 or otherwise we would have returned
// at the previous branch as tolower('\0') == '\0'.
if (RHS[i] == 0)
return true;
}
return true;
}
/// CStrInCStrNoCase - Portable version of strcasestr. Locates the first
/// occurance of c-string 's2' in string 's1', ignoring case. Returns