107 lines
3.9 KiB
C++
107 lines
3.9 KiB
C++
/*************************************************************************/
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/* Copyright (c) 2015 dx, http://kaimi.ru */
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/* */
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/* Permission is hereby granted, free of charge, to any person */
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/* obtaining a copy of this software and associated documentation */
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/* files (the "Software"), to deal in the Software without */
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/* restriction, including without limitation the rights to use, */
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/* copy, modify, merge, publish, distribute, sublicense, and/or */
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/* sell copies of the Software, and to permit persons to whom the */
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/* Software is furnished to do so, subject to the following conditions: */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include <string.h>
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#include "utils.h"
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#include "pe_exception.h"
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#ifndef PE_BLISS_WINDOWS
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#include <iconv.h>
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#endif
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namespace pe_bliss
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{
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const double pe_utils::log_2 = 1.44269504088896340736; //instead of using M_LOG2E
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//Returns stream size
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std::streamoff pe_utils::get_file_size(std::istream& file)
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{
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//Get old istream offset
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std::streamoff old_offset = file.tellg();
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file.seekg(0, std::ios::end);
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std::streamoff filesize = file.tellg();
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//Set old istream offset
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file.seekg(old_offset);
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return filesize;
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}
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#ifndef PE_BLISS_WINDOWS
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const u16string pe_utils::to_ucs2(const std::wstring& str)
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{
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u16string ret;
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if(str.empty())
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return ret;
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ret.resize(str.length());
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iconv_t conv = iconv_open("UCS-2", "WCHAR_T");
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if(conv == reinterpret_cast<iconv_t>(-1))
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throw pe_exception("Error opening iconv", pe_exception::encoding_convertion_error);
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size_t inbytesleft = str.length() * sizeof(wchar_t);
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size_t outbytesleft = ret.length() * sizeof(unicode16_t);
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const wchar_t* in_pos = str.c_str();
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unicode16_t* out_pos = &ret[0];
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size_t result = iconv(conv, const_cast<char**>(reinterpret_cast<const char**>(&in_pos)), &inbytesleft, reinterpret_cast<char**>(&out_pos), &outbytesleft);
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iconv_close(conv);
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if(result == static_cast<size_t>(-1))
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throw pe_exception("Iconv error", pe_exception::encoding_convertion_error);
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return ret;
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}
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const std::wstring pe_utils::from_ucs2(const u16string& str)
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{
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std::wstring ret;
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if(str.empty())
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return ret;
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ret.resize(str.length());
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iconv_t conv = iconv_open("WCHAR_T", "UCS-2");
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if(conv == reinterpret_cast<iconv_t>(-1))
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throw pe_exception("Error opening iconv", pe_exception::encoding_convertion_error);
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size_t inbytesleft = str.length() * sizeof(unicode16_t);
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size_t outbytesleft = ret.length() * sizeof(wchar_t);
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const unicode16_t* in_pos = str.c_str();
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wchar_t* out_pos = &ret[0];
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size_t result = iconv(conv, const_cast<char**>(reinterpret_cast<const char**>(&in_pos)), &inbytesleft, reinterpret_cast<char**>(&out_pos), &outbytesleft);
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iconv_close(conv);
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if(result == static_cast<size_t>(-1))
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throw pe_exception("Iconv error", pe_exception::encoding_convertion_error);
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return ret;
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}
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#endif
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bool operator==(const pe_win::guid& guid1, const pe_win::guid& guid2)
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{
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return guid1.Data1 == guid2.Data1
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&& guid1.Data2 == guid2.Data2
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&& guid1.Data3 == guid2.Data3
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&& !memcmp(guid1.Data4, guid2.Data4, sizeof(guid1.Data4));
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}
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}
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