89 lines
3.5 KiB
C++
89 lines
3.5 KiB
C++
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#include "resource_string_table_reader.h"
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#include "pe_resource_viewer.h"
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namespace pe_bliss
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{
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resource_string_table_reader::resource_string_table_reader(const pe_resource_viewer& res)
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:res_(res)
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{}
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//Returns string table data by ID and index in language directory (instead of language)
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const resource_string_list resource_string_table_reader::get_string_table_by_id(uint32_t id, uint32_t index) const
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{
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return parse_string_list(id, res_.get_resource_data_by_id(pe_resource_viewer::resource_string, id, index).get_data());
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}
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//Returns string table data by ID and language
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const resource_string_list resource_string_table_reader::get_string_table_by_id_lang(uint32_t language, uint32_t id) const
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{
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return parse_string_list(id, res_.get_resource_data_by_id(language, pe_resource_viewer::resource_string, id).get_data());
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}
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//Helper function of parsing string list table
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const resource_string_list resource_string_table_reader::parse_string_list(uint32_t id, const std::string& resource_data)
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{
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resource_string_list ret;
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//16 is maximum count of strings in a string table
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static const unsigned long max_string_list_entries = 16;
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unsigned long passed_bytes = 0;
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for(unsigned long i = 0; i != max_string_list_entries; ++i)
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{
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//Check resource data length
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if(resource_data.length() < sizeof(uint16_t) + passed_bytes)
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throw pe_exception("Incorrect resource string table", pe_exception::resource_incorrect_string_table);
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//Get string length - the first WORD
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uint16_t string_length = *reinterpret_cast<const uint16_t*>(resource_data.data() + passed_bytes);
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passed_bytes += sizeof(uint16_t); //WORD containing string length
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//Check resource data length again
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if(resource_data.length() < string_length + passed_bytes)
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throw pe_exception("Incorrect resource string table", pe_exception::resource_incorrect_string_table);
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if(string_length)
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{
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//Create and save string (UNICODE)
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#ifdef PE_BLISS_WINDOWS
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ret.insert(
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std::make_pair(static_cast<uint16_t>(((id - 1) << 4) + i), //ID of string is calculated such way
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std::wstring(reinterpret_cast<const wchar_t*>(resource_data.data() + passed_bytes), string_length)));
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#else
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ret.insert(
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std::make_pair(static_cast<uint16_t>(((id - 1) << 4) + i), //ID of string is calculated such way
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pe_utils::from_ucs2(u16string(reinterpret_cast<const unicode16_t*>(resource_data.data() + passed_bytes), string_length))));
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#endif
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}
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//Go to next string
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passed_bytes += string_length * 2;
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}
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return ret;
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}
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//Returns string from string table by ID and language
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const std::wstring resource_string_table_reader::get_string_by_id_lang(uint32_t language, uint16_t id) const
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{
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//List strings by string table id and language
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const resource_string_list strings(get_string_table_by_id_lang(language, (id >> 4) + 1));
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resource_string_list::const_iterator it = strings.find(id); //Find string by id
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if(it == strings.end())
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throw pe_exception("Resource string not found", pe_exception::resource_string_not_found);
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return (*it).second;
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}
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//Returns string from string table by ID and index in language directory (instead of language)
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const std::wstring resource_string_table_reader::get_string_by_id(uint16_t id, uint32_t index) const
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{
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//List strings by string table id and index
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const resource_string_list strings(get_string_table_by_id((id >> 4) + 1, index));
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resource_string_list::const_iterator it = strings.find(id); //Find string by id
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if(it == strings.end())
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throw pe_exception("Resource string not found", pe_exception::resource_string_not_found);
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return (*it).second;
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}
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}
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