Remove bogus assertion. This unbreaks mingw, where ConstantSDNode

[oota-llvm.git] / include / llvm / ADT / StringExtras.h

diff --git a/include/llvm/ADT/StringExtras.h b/include/llvm/ADT/StringExtras.h
index 3bfd3f5c72721c875d647fbdaba073d2dae94259..87b8ba6596a18a1d7aab1b2b973cd3354d7ea6a0 100644 (file)
--- a/include/llvm/ADT/StringExtras.h
+++ b/include/llvm/ADT/StringExtras.h
@@ -141,6 +141,32 @@ static inline bool StringsEqualNoCase(const std::string &LHS,
   }
   return RHS[LHS.size()] == 0;  // Not too long?
 }
+  
+/// CStrInCStrNoCase - Portable version of strcasestr.  Locates the first
+///  occurance of c-string 's2' in string 's1', ignoring case.  Returns
+///  NULL if 's2' cannot be found.
+static inline const char* CStrInCStrNoCase(const char *s1, const char *s2) {
+
+  // Are either strings NULL or empty?
+  if (!s1 || !s2 || s1[0] == '\0' || s2[0] == '\0')
+    return 0;
+  
+  if (s1 == s2)
+    return s1;
+  
+  const char *I1=s1, *I2=s2;
+  
+  while (*I1 != '\0' || *I2 != '\0' )
+    if (tolower(*I1) != tolower(*I2)) { // No match.  Start over.
+      ++s1; I1 = s1; I2 = s2;
+    }
+    else { // Character match.  Advance to the next character.
+      ++I1; ++I2;
+    }
+
+  // If we exhausted all of the characters in 's2', then 's2' appears in 's1'.
+  return *I2 == '\0' ? s1 : 0;
+}
 
 /// getToken - This function extracts one token from source, ignoring any
 /// leading characters that appear in the Delimiters string, and ending the