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