#include "llvm/ADT/StringExtras.h"
using namespace llvm;
+/// StrInStrNoCase - Portable version of strcasestr. Locates the first
+/// occurrence of string 's1' in string 's2', ignoring case. Returns
+/// the offset of s2 in s1 or npos if s2 cannot be found.
+StringRef::size_type llvm::StrInStrNoCase(StringRef s1, StringRef s2) {
+ size_t N = s2.size(), M = s1.size();
+ if (N > M)
+ return StringRef::npos;
+ for (size_t i = 0, e = M - N + 1; i != e; ++i)
+ if (s1.substr(i, N).equals_lower(s2))
+ return i;
+ return StringRef::npos;
+}
+
/// 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
StringRef Delimiters) {
// Figure out where the token starts.
StringRef::size_type Start = Source.find_first_not_of(Delimiters);
- if (Start == StringRef::npos) Start = Source.size();
// Find the next occurrence of the delimiter.
StringRef::size_type End = Source.find_first_of(Delimiters, Start);
- if (End == StringRef::npos) End = Source.size();
- return std::make_pair(Source.substr(Start, End), Source.substr(End));
+ return std::make_pair(Source.slice(Start, End), Source.substr(End));
}
/// SplitString - Split up the specified string according to the specified