// Copyright 2013 Dolphin Emulator Project / 2014 Citra Emulator Project // Licensed under GPLv2 or any later version // Refer to the license.txt file included. #include #include #include #include #include #include #include "common/common_paths.h" #include "common/logging/log.h" #include "common/string_util.h" #ifdef _WIN32 #include #include #include "common/common_funcs.h" #else #include #endif namespace Common { /// Make a string lowercase std::string ToLower(std::string str) { std::transform(str.begin(), str.end(), str.begin(), [](unsigned char c) { return std::tolower(c); }); return str; } /// Make a string uppercase std::string ToUpper(std::string str) { std::transform(str.begin(), str.end(), str.begin(), [](unsigned char c) { return std::toupper(c); }); return str; } // faster than sscanf bool AsciiToHex(const char* _szValue, u32& result) { char* endptr = nullptr; const u32 value = strtoul(_szValue, &endptr, 16); if (!endptr || *endptr) return false; result = value; return true; } bool CharArrayFromFormatV(char* out, int outsize, const char* format, va_list args) { int writtenCount; #ifdef _MSC_VER // You would think *printf are simple, right? Iterate on each character, // if it's a format specifier handle it properly, etc. // // Nooooo. Not according to the C standard. // // According to the C99 standard (7.19.6.1 "The fprintf function") // The format shall be a multibyte character sequence // // Because some character encodings might have '%' signs in the middle of // a multibyte sequence (SJIS for example only specifies that the first // byte of a 2 byte sequence is "high", the second byte can be anything), // printf functions have to decode the multibyte sequences and try their // best to not screw up. // // Unfortunately, on Windows, the locale for most languages is not UTF-8 // as we would need. Notably, for zh_TW, Windows chooses EUC-CN as the // locale, and completely fails when trying to decode UTF-8 as EUC-CN. // // On the other hand, the fix is simple: because we use UTF-8, no such // multibyte handling is required as we can simply assume that no '%' char // will be present in the middle of a multibyte sequence. // // This is why we lookup an ANSI (cp1252) locale here and use _vsnprintf_l. static locale_t c_locale = nullptr; if (!c_locale) c_locale = _create_locale(LC_ALL, ".1252"); writtenCount = _vsnprintf_l(out, outsize, format, c_locale, args); #else writtenCount = vsnprintf(out, outsize, format, args); #endif if (writtenCount > 0 && writtenCount < outsize) { out[writtenCount] = '\0'; return true; } else { out[outsize - 1] = '\0'; return false; } } std::string StringFromFormat(const char* format, ...) { va_list args; char* buf = nullptr; #ifdef _WIN32 int required = 0; va_start(args, format); required = _vscprintf(format, args); buf = new char[required + 1]; CharArrayFromFormatV(buf, required + 1, format, args); va_end(args); std::string temp = buf; delete[] buf; #else va_start(args, format); if (vasprintf(&buf, format, args) < 0) LOG_ERROR(Common, "Unable to allocate memory for string"); va_end(args); std::string temp = buf; free(buf); #endif return temp; } // For Debugging. Read out an u8 array. std::string ArrayToString(const u8* data, size_t size, int line_len, bool spaces) { std::ostringstream oss; oss << std::setfill('0') << std::hex; for (int line = 0; size; ++data, --size) { oss << std::setw(2) << (int)*data; if (line_len == ++line) { oss << '\n'; line = 0; } else if (spaces) oss << ' '; } return oss.str(); } // Turns " hej " into "hej". Also handles tabs. std::string StripSpaces(const std::string& str) { const size_t s = str.find_first_not_of(" \t\r\n"); if (str.npos != s) return str.substr(s, str.find_last_not_of(" \t\r\n") - s + 1); else return ""; } // "\"hello\"" is turned to "hello" // This one assumes that the string has already been space stripped in both // ends, as done by StripSpaces above, for example. std::string StripQuotes(const std::string& s) { if (s.size() && '\"' == s[0] && '\"' == *s.rbegin()) return s.substr(1, s.size() - 2); else return s; } bool TryParse(const std::string& str, u32* const output) { char* endptr = nullptr; // Reset errno to a value other than ERANGE errno = 0; unsigned long value = strtoul(str.c_str(), &endptr, 0); if (!endptr || *endptr) return false; if (errno == ERANGE) return false; #if ULONG_MAX > UINT_MAX if (value >= 0x100000000ull && value <= 0xFFFFFFFF00000000ull) return false; #endif *output = static_cast(value); return true; } bool TryParse(const std::string& str, bool* const output) { if ("1" == str || "true" == ToLower(str)) *output = true; else if ("0" == str || "false" == ToLower(str)) *output = false; else return false; return true; } std::string StringFromBool(bool value) { return value ? "True" : "False"; } bool SplitPath(const std::string& full_path, std::string* _pPath, std::string* _pFilename, std::string* _pExtension) { if (full_path.empty()) return false; size_t dir_end = full_path.find_last_of("/" // windows needs the : included for something like just "C:" to be considered a directory #ifdef _WIN32 ":" #endif ); if (std::string::npos == dir_end) dir_end = 0; else dir_end += 1; size_t fname_end = full_path.rfind('.'); if (fname_end < dir_end || std::string::npos == fname_end) fname_end = full_path.size(); if (_pPath) *_pPath = full_path.substr(0, dir_end); if (_pFilename) *_pFilename = full_path.substr(dir_end, fname_end - dir_end); if (_pExtension) *_pExtension = full_path.substr(fname_end); return true; } void BuildCompleteFilename(std::string& _CompleteFilename, const std::string& _Path, const std::string& _Filename) { _CompleteFilename = _Path; // check for seperator if (DIR_SEP_CHR != *_CompleteFilename.rbegin()) _CompleteFilename += DIR_SEP_CHR; // add the filename _CompleteFilename += _Filename; } void SplitString(const std::string& str, const char delim, std::vector& output) { std::istringstream iss(str); output.resize(1); while (std::getline(iss, *output.rbegin(), delim)) output.push_back(""); output.pop_back(); } std::string TabsToSpaces(int tab_size, const std::string& in) { const std::string spaces(tab_size, ' '); std::string out(in); size_t i = 0; while (out.npos != (i = out.find('\t'))) out.replace(i, 1, spaces); return out; } std::string ReplaceAll(std::string result, const std::string& src, const std::string& dest) { size_t pos = 0; if (src == dest) return result; while ((pos = result.find(src, pos)) != std::string::npos) { result.replace(pos, src.size(), dest); pos += dest.length(); } return result; } #ifdef _WIN32 std::string UTF16ToUTF8(const std::u16string& input) { #if _MSC_VER >= 1900 // Workaround for missing char16_t/char32_t instantiations in MSVC2015 std::wstring_convert, __int16> convert; std::basic_string<__int16> tmp_buffer(input.cbegin(), input.cend()); return convert.to_bytes(tmp_buffer); #else std::wstring_convert, char16_t> convert; return convert.to_bytes(input); #endif } std::u16string UTF8ToUTF16(const std::string& input) { #if _MSC_VER >= 1900 // Workaround for missing char16_t/char32_t instantiations in MSVC2015 std::wstring_convert, __int16> convert; auto tmp_buffer = convert.from_bytes(input); return std::u16string(tmp_buffer.cbegin(), tmp_buffer.cend()); #else std::wstring_convert, char16_t> convert; return convert.from_bytes(input); #endif } static std::wstring CPToUTF16(u32 code_page, const std::string& input) { auto const size = MultiByteToWideChar(code_page, 0, input.data(), static_cast(input.size()), nullptr, 0); std::wstring output; output.resize(size); if (size == 0 || size != MultiByteToWideChar(code_page, 0, input.data(), static_cast(input.size()), &output[0], static_cast(output.size()))) output.clear(); return output; } std::string UTF16ToUTF8(const std::wstring& input) { auto const size = WideCharToMultiByte(CP_UTF8, 0, input.data(), static_cast(input.size()), nullptr, 0, nullptr, nullptr); std::string output; output.resize(size); if (size == 0 || size != WideCharToMultiByte(CP_UTF8, 0, input.data(), static_cast(input.size()), &output[0], static_cast(output.size()), nullptr, nullptr)) output.clear(); return output; } std::wstring UTF8ToUTF16W(const std::string& input) { return CPToUTF16(CP_UTF8, input); } std::string SHIFTJISToUTF8(const std::string& input) { return UTF16ToUTF8(CPToUTF16(932, input)); } std::string CP1252ToUTF8(const std::string& input) { return UTF16ToUTF8(CPToUTF16(1252, input)); } #else template static std::string CodeToUTF8(const char* fromcode, const std::basic_string& input) { std::string result; iconv_t const conv_desc = iconv_open("UTF-8", fromcode); if ((iconv_t)(-1) == conv_desc) { LOG_ERROR(Common, "Iconv initialization failure [{}]: {}", fromcode, strerror(errno)); iconv_close(conv_desc); return {}; } const size_t in_bytes = sizeof(T) * input.size(); // Multiply by 4, which is the max number of bytes to encode a codepoint const size_t out_buffer_size = 4 * in_bytes; std::string out_buffer; out_buffer.resize(out_buffer_size); auto src_buffer = &input[0]; size_t src_bytes = in_bytes; auto dst_buffer = &out_buffer[0]; size_t dst_bytes = out_buffer.size(); while (0 != src_bytes) { size_t const iconv_result = iconv(conv_desc, (char**)(&src_buffer), &src_bytes, &dst_buffer, &dst_bytes); if (static_cast(-1) == iconv_result) { if (EILSEQ == errno || EINVAL == errno) { // Try to skip the bad character if (0 != src_bytes) { --src_bytes; ++src_buffer; } } else { LOG_ERROR(Common, "iconv failure [{}]: {}", fromcode, strerror(errno)); break; } } } out_buffer.resize(out_buffer_size - dst_bytes); out_buffer.swap(result); iconv_close(conv_desc); return result; } std::u16string UTF8ToUTF16(const std::string& input) { std::u16string result; iconv_t const conv_desc = iconv_open("UTF-16LE", "UTF-8"); if ((iconv_t)(-1) == conv_desc) { LOG_ERROR(Common, "Iconv initialization failure [UTF-8]: {}", strerror(errno)); iconv_close(conv_desc); return {}; } const size_t in_bytes = sizeof(char) * input.size(); // Multiply by 4, which is the max number of bytes to encode a codepoint const size_t out_buffer_size = 4 * sizeof(char16_t) * in_bytes; std::u16string out_buffer; out_buffer.resize(out_buffer_size); char* src_buffer = const_cast(&input[0]); size_t src_bytes = in_bytes; char* dst_buffer = (char*)(&out_buffer[0]); size_t dst_bytes = out_buffer.size(); while (0 != src_bytes) { size_t const iconv_result = iconv(conv_desc, &src_buffer, &src_bytes, &dst_buffer, &dst_bytes); if (static_cast(-1) == iconv_result) { if (EILSEQ == errno || EINVAL == errno) { // Try to skip the bad character if (0 != src_bytes) { --src_bytes; ++src_buffer; } } else { LOG_ERROR(Common, "iconv failure [UTF-8]: {}", strerror(errno)); break; } } } out_buffer.resize(out_buffer_size - dst_bytes); out_buffer.swap(result); iconv_close(conv_desc); return result; } std::string UTF16ToUTF8(const std::u16string& input) { return CodeToUTF8("UTF-16LE", input); } std::string CP1252ToUTF8(const std::string& input) { // return CodeToUTF8("CP1252//TRANSLIT", input); // return CodeToUTF8("CP1252//IGNORE", input); return CodeToUTF8("CP1252", input); } std::string SHIFTJISToUTF8(const std::string& input) { // return CodeToUTF8("CP932", input); return CodeToUTF8("SJIS", input); } #endif std::string StringFromFixedZeroTerminatedBuffer(const char* buffer, size_t max_len) { size_t len = 0; while (len < max_len && buffer[len] != '\0') ++len; return std::string(buffer, len); } const char* TrimSourcePath(const char* path, const char* root) { const char* p = path; while (*p != '\0') { const char* next_slash = p; while (*next_slash != '\0' && *next_slash != '/' && *next_slash != '\\') { ++next_slash; } bool is_src = Common::ComparePartialString(p, next_slash, root); p = next_slash; if (*p != '\0') { ++p; } if (is_src) { path = p; } } return path; } } // namespace Common