1 /* 2 Copyright (C) 2001-present by Serge Lamikhov-Center 3 4 Permission is hereby granted, free of charge, to any person obtaining a copy 5 of this software and associated documentation files (the "Software"), to deal 6 in the Software without restriction, including without limitation the rights 7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 8 copies of the Software, and to permit persons to whom the Software is 9 furnished to do so, subject to the following conditions: 10 11 The above copyright notice and this permission notice shall be included in 12 all copies or substantial portions of the Software. 13 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 20 THE SOFTWARE. 21 */ 22 23 #ifndef ELFIO_STRINGS_HPP 24 #define ELFIO_STRINGS_HPP 25 26 #include <cstdlib> 27 #include <cstring> 28 #include <string> 29 30 namespace ELFIO { 31 32 //------------------------------------------------------------------------------ 33 template <class S> class string_section_accessor_template 34 { 35 public: 36 //------------------------------------------------------------------------------ string_section_accessor_template(S * section)37 string_section_accessor_template( S* section ) : string_section( section ) 38 { 39 } 40 41 //------------------------------------------------------------------------------ get_string(Elf_Word index) const42 const char* get_string( Elf_Word index ) const 43 { 44 if ( string_section ) { 45 if ( index < string_section->get_size() ) { 46 const char* data = string_section->get_data(); 47 if ( 0 != data ) { 48 return data + index; 49 } 50 } 51 } 52 53 return 0; 54 } 55 56 //------------------------------------------------------------------------------ add_string(const char * str)57 Elf_Word add_string( const char* str ) 58 { 59 Elf_Word current_position = 0; 60 61 if ( string_section ) { 62 // Strings are addeded to the end of the current section data 63 current_position = (Elf_Word)string_section->get_size(); 64 65 if ( current_position == 0 ) { 66 char empty_string = '\0'; 67 string_section->append_data( &empty_string, 1 ); 68 current_position++; 69 } 70 string_section->append_data( str, 71 (Elf_Word)std::strlen( str ) + 1 ); 72 } 73 74 return current_position; 75 } 76 77 //------------------------------------------------------------------------------ add_string(const std::string & str)78 Elf_Word add_string( const std::string& str ) 79 { 80 return add_string( str.c_str() ); 81 } 82 83 //------------------------------------------------------------------------------ 84 private: 85 S* string_section; 86 }; 87 88 using string_section_accessor = string_section_accessor_template<section>; 89 using const_string_section_accessor = 90 string_section_accessor_template<const section>; 91 92 } // namespace ELFIO 93 94 #endif // ELFIO_STRINGS_HPP 95