introduce string_view

webcc/string.h

@@ -4,7 +4,7 @@
 #include <string>
 #include <vector>
 
-#include "boost/utility/string_view.hpp"
+#include "webcc/globals.h"  // for string_view
 
 namespace webcc {
 
@@ -15,15 +15,21 @@ std::string RandomString(std::size_t length);
 // Just a wrapper of std::stoul.
 bool ToSizeT(const std::string& str, int base, std::size_t* size);
 
+void Trim(string_view& sv, const char* spaces = " ");
+
 // Split string without copy.
 // |compress_token| is the same as boost::token_compress_on for boost::split.
-void Split(boost::string_view input, char delim, bool compress_token,
-           std::vector<boost::string_view>* output);
+void Split(string_view input, char delim, bool compress_token,
+           std::vector<string_view>* output);
 
 // Split a key-value string.
 // E.g., split "Connection: Keep-Alive".
-// TODO: Use string_view (blocked by trim)
-bool SplitKV(const std::string& input, char delim, bool trim_spaces,
+bool SplitKV(string_view input, char delim, bool trim_spaces, string_view* key,
+             string_view* value);
+
+// Split a key-value string.
+// E.g., split "Connection: Keep-Alive".
+bool SplitKV(string_view input, char delim, bool trim_spaces,
              std::string* key, std::string* value);
 
 }  // namespace webcc