Support for non null-terminated string views (vincentlaucsb#248)

Author: hirohira9119

include/internal/csv_utility.cpp

@@ -12,7 +12,7 @@ namespace csv {
      *  @snippet tests/test_read_csv.cpp Parse Example
      */
     CSV_INLINE CSVReader parse(csv::string_view in, CSVFormat format) {
-        std::stringstream stream(in.data());
+        std::stringstream stream(std::string(in.data(), in.length()));
         return CSVReader(stream, format);
     }
 

single_include/csv.hpp

@@ -8515,7 +8515,7 @@ namespace csv {
      *  @snippet tests/test_read_csv.cpp Parse Example
      */
     CSV_INLINE CSVReader parse(csv::string_view in, CSVFormat format) {
-        std::stringstream stream(in.data());
+        std::stringstream stream(std::string(in.data(), in.length()));
         return CSVReader(stream, format);
     }
 

single_include_test/csv.hpp

@@ -8515,7 +8515,7 @@ namespace csv {
      *  @snippet tests/test_read_csv.cpp Parse Example
      */
     CSV_INLINE CSVReader parse(csv::string_view in, CSVFormat format) {
-        std::stringstream stream(in.data());
+        std::stringstream stream(std::string(in.data(), in.length()));
         return CSVReader(stream, format);
     }