Add a InitSections method to the streamer interface.

[oota-llvm.git] / lib / Support / StringExtras.cpp

diff --git a/lib/Support/StringExtras.cpp b/lib/Support/StringExtras.cpp
index 65b41d526f406cbe2975ee7a8e721283fc1c265f..eb2fa084218aef31b157cddb31af44e29ed73c98 100644 (file)
--- a/lib/Support/StringExtras.cpp
+++ b/lib/Support/StringExtras.cpp
@@ -16,6 +16,19 @@
 #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
@@ -26,13 +39,11 @@ std::pair<StringRef, StringRef> llvm::getToken(StringRef Source,
                                                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