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include/elfio/elfio_strings.hpp

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+/*
+Copyright (C) 2001-present by Serge Lamikhov-Center
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifndef ELFIO_STRINGS_HPP
+#define ELFIO_STRINGS_HPP
+
+#include <cstdlib>
+#include <cstring>
+#include <string>
+
+namespace ELFIO {
+
+//------------------------------------------------------------------------------
+template <class S> class string_section_accessor_template
+{
+  public:
+    //------------------------------------------------------------------------------
+    explicit string_section_accessor_template( S* section )
+        : string_section( section )
+    {
+    }
+
+    //------------------------------------------------------------------------------
+    const char* get_string( Elf_Word index ) const
+    {
+        if ( string_section ) {
+            const char* data = string_section->get_data();
+            if ( index < string_section->get_size() && nullptr != data ) {
+                size_t string_length =
+                    strnlen( data + index, string_section->get_size() - index );
+                if ( string_length < ( string_section->get_size() - index ) )
+                    return data + index;
+            }
+        }
+
+        return nullptr;
+    }
+
+    //------------------------------------------------------------------------------
+    Elf_Word add_string( const char* str )
+    {
+        Elf_Word current_position = 0;
+
+        if ( string_section ) {
+            // Strings are addeded to the end of the current section data
+            current_position =
+                static_cast<Elf_Word>( string_section->get_size() );
+
+            if ( current_position == 0 ) {
+                char empty_string = '\0';
+                string_section->append_data( &empty_string, 1 );
+                current_position++;
+            }
+            string_section->append_data(
+                str, static_cast<Elf_Word>( std::strlen( str ) + 1 ) );
+        }
+
+        return current_position;
+    }
+
+    //------------------------------------------------------------------------------
+    Elf_Word add_string( const std::string& str )
+    {
+        return add_string( str.c_str() );
+    }
+
+    //------------------------------------------------------------------------------
+  private:
+    S* string_section;
+};
+
+using string_section_accessor = string_section_accessor_template<section>;
+using const_string_section_accessor =
+    string_section_accessor_template<const section>;
+
+} // namespace ELFIO
+
+#endif // ELFIO_STRINGS_HPP