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add some methods for case-insensitive string compares

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25659 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-01-26 20:36:29 +00:00
parent dc42989b55
commit 8211e82e40
1 changed files with 21 additions and 0 deletions
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21
include/llvm/ADT/StringExtras.h
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@ -113,6 +113,27 @@ static inline std::string LowercaseString(const std::string &S) {
return result;
}
/// StringsEqualNoCase - Return true if the two strings are equal, ignoring
/// case.
static inline bool StringsEqualNoCase(const std::string &LHS,
const std::string &RHS) {
if (LHS.size() != RHS.size()) return false;
for (unsigned i = 0, e = LHS.size(); i != e; ++i)
if (tolower(LHS[i]) != tolower(RHS[i])) return false;
return true;
}
/// StringsEqualNoCase - Return true if the two strings are equal, ignoring
/// case.
static inline bool StringsEqualNoCase(const std::string &LHS,
const char *RHS) {
for (unsigned i = 0, e = LHS.size(); i != e; ++i) {
if (RHS[i] == 0) return false; // RHS too short.
if (tolower(LHS[i]) != tolower(RHS[i])) return false;
}
return RHS[LHS.size()] == 0; // Not too long?
}
/// getToken - This function extracts one token from source, ignoring any
/// leading characters that appear in the Delimiters string, and ending the
/// token at any of the characters that appear in the Delimiters string. If