Issue 5146 - Part 2: Process http response in C++

compiled/StringScanner.h

Index: compiled/StringScanner.h
===================================================================
--- a/compiled/StringScanner.h
+++ b/compiled/StringScanner.h
@@ -12,16 +12,18 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #pragma once
 
+#include <cwctype>
+
 #include "String.h"
 
 class StringScanner
 {
 private:
   const DependentString mStr;
   String::size_type mPos;
   String::size_type mEnd;
@@ -49,16 +51,46 @@
 
   String::value_type next()
   {
     String::value_type result = done() ? mTerminator : mStr[mPos];
     mPos++;
     return result;
   }
 
+  bool skipWhiteSpace()
+  {
+    bool skipped = false;
+    while (!done() && std::iswspace(mStr[mPos]))
+    {
+      skipped = true;
+      mPos++;
+    }
+
+    return skipped;
+  }
+
+  bool skipString(const String& str)
+  {
+    bool skipped = false;
+
+    if (str.length() > mStr.length() - mPos)
+      return false;
+
+    if (std::memcmp(str.data(),
+                    mStr.data() + mPos,
+                    sizeof(String::value_type) * str.length()) == 0)
+    {
+      mPos += str.length();
+      skipped = true;
+    }
+
+    return skipped;
+  }
+
   bool skipOne(String::value_type ch)
   {
     if (!done() && mStr[mPos] == ch)
     {
       mPos++;
       return true;
     }