src: Rewrite util::stripIter

src/util.cc

@@ -33,7 +33,7 @@ namespace spdylay {
 
 namespace util {
 
-const std::string DEFAULT_STRIP_CHARSET("\r\n\t ");
+const char DEFAULT_STRIP_CHARSET[] = "\r\n\t ";
 
 bool isAlpha(const char c)
 {

src/util.h

@@ -27,6 +27,7 @@
 
 #include "spdylay_config.h"
 
+#include <cstring>
 #include <vector>
 #include <string>
 #include <algorithm>
@@ -77,21 +78,19 @@ public:
   }
 };
 
-extern const std::string DEFAULT_STRIP_CHARSET;
+extern const char DEFAULT_STRIP_CHARSET[];
 
 template<typename InputIterator>
 std::pair<InputIterator, InputIterator> stripIter
 (InputIterator first, InputIterator last,
- const std::string& chars = DEFAULT_STRIP_CHARSET)
+ const char* chars = DEFAULT_STRIP_CHARSET)
 {
-  for(; first != last &&
-        std::find(chars.begin(), chars.end(), *first) != chars.end(); ++first);
+  for(; first != last && strchr(chars, *first) != 0; ++first);
   if(first == last) {
     return std::make_pair(first, last);
   }
   InputIterator left = last-1;
-  for(; left != first &&
-        std::find(chars.begin(), chars.end(), *left) != chars.end(); --left);
+  for(; left != first && strchr(chars, *left) != 0; --left);
   return std::make_pair(first, left+1);
 }