mirror of https://github.com/PCSX2/pcsx2.git
515 lines
12 KiB
C++
515 lines
12 KiB
C++
/* PCSX2 - PS2 Emulator for PCs
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* Copyright (C) 2002-2021 PCSX2 Dev Team
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*
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* PCSX2 is free software: you can redistribute it and/or modify it under the terms
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* of the GNU Lesser General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with PCSX2.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "PrecompiledHeader.h"
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#include "StringUtil.h"
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#include <cctype>
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#include <codecvt>
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#include <cstdio>
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#include <sstream>
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#include <algorithm>
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#include "fmt/core.h"
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#ifdef _WIN32
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#include "RedtapeWindows.h"
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#endif
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namespace StringUtil
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{
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std::string StdStringFromFormat(const char* format, ...)
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{
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std::va_list ap;
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va_start(ap, format);
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std::string ret = StdStringFromFormatV(format, ap);
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va_end(ap);
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return ret;
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}
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std::string StdStringFromFormatV(const char* format, std::va_list ap)
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{
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std::va_list ap_copy;
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va_copy(ap_copy, ap);
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#ifdef _WIN32
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int len = _vscprintf(format, ap_copy);
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#else
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int len = std::vsnprintf(nullptr, 0, format, ap_copy);
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#endif
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va_end(ap_copy);
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std::string ret;
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// If an encoding error occurs, len is -1. Which we definitely don't want to resize to.
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if (len > 0)
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{
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ret.resize(len);
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std::vsnprintf(ret.data(), ret.size() + 1, format, ap);
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}
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return ret;
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}
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bool WildcardMatch(const char* subject, const char* mask, bool case_sensitive /*= true*/)
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{
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if (case_sensitive)
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{
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const char* cp = nullptr;
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const char* mp = nullptr;
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while ((*subject) && (*mask != '*'))
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{
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if ((*mask != '?') && (std::tolower(*mask) != std::tolower(*subject)))
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return false;
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mask++;
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subject++;
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}
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while (*subject)
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{
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if (*mask == '*')
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{
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if (*++mask == 0)
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return true;
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mp = mask;
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cp = subject + 1;
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}
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else
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{
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if ((*mask == '?') || (std::tolower(*mask) == std::tolower(*subject)))
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{
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mask++;
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subject++;
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}
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else
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{
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mask = mp;
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subject = cp++;
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}
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}
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}
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while (*mask == '*')
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{
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mask++;
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}
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return *mask == 0;
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}
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else
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{
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const char* cp = nullptr;
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const char* mp = nullptr;
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while ((*subject) && (*mask != '*'))
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{
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if ((*mask != *subject) && (*mask != '?'))
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return false;
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mask++;
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subject++;
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}
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while (*subject)
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{
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if (*mask == '*')
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{
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if (*++mask == 0)
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return true;
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mp = mask;
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cp = subject + 1;
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}
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else
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{
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if ((*mask == *subject) || (*mask == '?'))
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{
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mask++;
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subject++;
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}
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else
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{
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mask = mp;
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subject = cp++;
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}
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}
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}
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while (*mask == '*')
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{
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mask++;
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}
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return *mask == 0;
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}
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}
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std::size_t Strlcpy(char* dst, const char* src, std::size_t size)
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{
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std::size_t len = std::strlen(src);
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if (len < size)
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{
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std::memcpy(dst, src, len + 1);
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}
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else
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{
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std::memcpy(dst, src, size - 1);
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dst[size - 1] = '\0';
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}
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return len;
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}
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std::size_t Strlcpy(char* dst, const std::string_view& src, std::size_t size)
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{
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std::size_t len = src.length();
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if (len < size)
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{
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std::memcpy(dst, src.data(), len);
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dst[len] = '\0';
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}
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else
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{
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std::memcpy(dst, src.data(), size - 1);
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dst[size - 1] = '\0';
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}
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return len;
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}
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std::optional<std::vector<u8>> DecodeHex(const std::string_view& in)
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{
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std::vector<u8> data;
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data.reserve(in.size() / 2);
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for (size_t i = 0; i < in.size() / 2; i++)
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{
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std::optional<u8> byte = StringUtil::FromChars<u8>(in.substr(i * 2, 2), 16);
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if (byte.has_value())
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data.push_back(*byte);
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else
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return std::nullopt;
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}
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return {data};
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}
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std::string EncodeHex(const u8* data, int length)
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{
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std::stringstream ss;
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for (int i = 0; i < length; i++)
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ss << std::hex << std::setfill('0') << std::setw(2) << static_cast<int>(data[i]);
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return ss.str();
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}
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std::string toLower(const std::string_view& input)
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{
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std::string newStr;
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std::transform(input.begin(), input.end(), std::back_inserter(newStr),
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[](unsigned char c) { return std::tolower(c); });
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return newStr;
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}
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std::string toUpper(const std::string_view& input)
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{
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std::string newStr;
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std::transform(input.begin(), input.end(), std::back_inserter(newStr),
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[](unsigned char c) { return std::toupper(c); });
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return newStr;
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}
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bool compareNoCase(const std::string_view& str1, const std::string_view& str2)
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{
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if (str1.length() != str2.length())
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{
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return false;
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}
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return Strncasecmp(str1.data(), str2.data(), str1.length()) == 0;
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}
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std::vector<std::string> splitOnNewLine(const std::string& str)
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{
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std::vector<std::string> lines;
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std::istringstream stream(str);
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std::string line;
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while (std::getline(stream, line))
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{
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lines.push_back(line);
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}
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return lines;
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}
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std::string_view StripWhitespace(const std::string_view& str)
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{
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std::string_view::size_type start = 0;
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while (start < str.size() && std::isspace(str[start]))
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start++;
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if (start == str.size())
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return {};
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std::string_view::size_type end = str.size() - 1;
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while (end > start && std::isspace(str[end]))
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end--;
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return str.substr(start, end - start + 1);
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}
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void StripWhitespace(std::string* str)
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{
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{
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const char* cstr = str->c_str();
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std::string_view::size_type start = 0;
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while (start < str->size() && std::isspace(cstr[start]))
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start++;
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if (start != 0)
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str->erase(0, start);
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}
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{
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const char* cstr = str->c_str();
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std::string_view::size_type start = str->size();
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while (start > 0 && std::isspace(cstr[start - 1]))
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start--;
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if (start != str->size())
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str->erase(start);
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}
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}
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std::vector<std::string_view> SplitString(const std::string_view& str, char delimiter, bool skip_empty /*= true*/)
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{
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std::vector<std::string_view> res;
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std::string_view::size_type last_pos = 0;
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std::string_view::size_type pos;
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while (last_pos < str.size() && (pos = str.find(delimiter, last_pos)) != std::string_view::npos)
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{
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std::string_view part(StripWhitespace(str.substr(last_pos, pos - last_pos)));
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if (!skip_empty || !part.empty())
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res.push_back(std::move(part));
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last_pos = pos + 1;
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}
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if (last_pos < str.size())
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{
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std::string_view part(StripWhitespace(str.substr(last_pos)));
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if (!skip_empty || !part.empty())
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res.push_back(std::move(part));
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}
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return res;
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}
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std::string ReplaceAll(const std::string_view& subject, const std::string_view& search, const std::string_view& replacement)
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{
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std::string ret(subject);
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ReplaceAll(&ret, search, replacement);
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return ret;
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}
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void ReplaceAll(std::string* subject, const std::string_view& search, const std::string_view& replacement)
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{
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if (!subject->empty())
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{
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std::string::size_type start_pos = 0;
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while ((start_pos = subject->find(search, start_pos)) != std::string::npos)
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{
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subject->replace(start_pos, search.length(), replacement);
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start_pos += replacement.length();
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}
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}
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}
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bool ParseAssignmentString(const std::string_view& str, std::string_view* key, std::string_view* value)
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{
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const std::string_view::size_type pos = str.find('=');
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if (pos == std::string_view::npos)
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{
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*key = std::string_view();
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*value = std::string_view();
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return false;
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}
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*key = StripWhitespace(str.substr(0, pos));
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if (pos != (str.size() - 1))
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*value = StripWhitespace(str.substr(pos + 1));
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else
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*value = std::string_view();
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return true;
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}
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void AppendUTF16CharacterToUTF8(std::string& s, u16 ch)
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{
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if (ch & 0xf800)
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{
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s.push_back(static_cast<char>(static_cast<u8>(0xe0 | static_cast<u8>(ch >> 12))));
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s.push_back(static_cast<char>(static_cast<u8>(0x80 | static_cast<u8>(((ch >> 6) & 0x3f)))));
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s.push_back(static_cast<char>(static_cast<u8>(0x80 | static_cast<u8>((ch & 0x3f)))));
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}
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else if (ch & 0xff80)
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{
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s.push_back(static_cast<char>(static_cast<u8>(0xc0 | static_cast<u8>((ch >> 6)))));
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s.push_back(static_cast<char>(static_cast<u8>(0x80 | static_cast<u8>((ch & 0x3f)))));
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}
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else
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{
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s.push_back(static_cast<char>(static_cast<u8>(ch)));
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}
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}
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void EncodeAndAppendUTF8(std::string& s, char32_t ch)
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{
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if (ch <= 0x7F)
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{
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s.push_back(static_cast<char>(static_cast<u8>(ch)));
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}
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else if (ch <= 0x07FF)
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{
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s.push_back(static_cast<char>(static_cast<u8>(0xc0 | static_cast<u8>((ch >> 6) & 0x1f))));
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s.push_back(static_cast<char>(static_cast<u8>(0x80 | static_cast<u8>((ch & 0x3f)))));
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}
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else if (ch <= 0xFFFF)
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{
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s.push_back(static_cast<char>(static_cast<u8>(0xe0 | static_cast<u8>(((ch >> 12) & 0x0f)))));
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s.push_back(static_cast<char>(static_cast<u8>(0x80 | static_cast<u8>(((ch >> 6) & 0x3f)))));
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s.push_back(static_cast<char>(static_cast<u8>(0x80 | static_cast<u8>((ch & 0x3f)))));
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}
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else if (ch <= 0x10FFFF)
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{
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s.push_back(static_cast<char>(static_cast<u8>(0xf0 | static_cast<u8>(((ch >> 18) & 0x07)))));
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s.push_back(static_cast<char>(static_cast<u8>(0x80 | static_cast<u8>(((ch >> 12) & 0x3f)))));
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s.push_back(static_cast<char>(static_cast<u8>(0x80 | static_cast<u8>(((ch >> 6) & 0x3f)))));
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s.push_back(static_cast<char>(static_cast<u8>(0x80 | static_cast<u8>((ch & 0x3f)))));
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}
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else
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{
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s.push_back(static_cast<char>(0xefu));
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s.push_back(static_cast<char>(0xbfu));
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s.push_back(static_cast<char>(0xbdu));
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}
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}
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size_t DecodeUTF8(const void* bytes, size_t length, char32_t* ch)
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{
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const u8* s = reinterpret_cast<const u8*>(bytes);
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if (s[0] < 0x80)
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{
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*ch = s[0];
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return 1;
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}
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else if ((s[0] & 0xe0) == 0xc0)
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{
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if (length < 2)
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goto invalid;
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*ch = static_cast<char32_t>((static_cast<u32>(s[0] & 0x1f) << 6) | (static_cast<u32>(s[1] & 0x3f) << 0));
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return 2;
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}
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else if ((s[0] & 0xf0) == 0xe0)
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{
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if (length < 3)
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goto invalid;
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*ch = static_cast<char32_t>((static_cast<u32>(s[0] & 0x0f) << 12) | (static_cast<u32>(s[1] & 0x3f) << 6) |
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(static_cast<u32>(s[2] & 0x3f) << 0));
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return 3;
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}
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else if ((s[0] & 0xf8) == 0xf0 && (s[0] <= 0xf4))
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{
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if (length < 4)
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goto invalid;
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*ch = static_cast<char32_t>((static_cast<u32>(s[0] & 0x07) << 18) | (static_cast<u32>(s[1] & 0x3f) << 12) |
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(static_cast<u32>(s[2] & 0x3f) << 6) | (static_cast<u32>(s[3] & 0x3f) << 0));
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return 4;
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}
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invalid:
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*ch = 0xFFFFFFFFu;
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return 1;
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}
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size_t DecodeUTF8(const std::string_view& str, size_t offset, char32_t* ch)
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{
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return DecodeUTF8(str.data() + offset, str.length() - offset, ch);
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}
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size_t DecodeUTF8(const std::string& str, size_t offset, char32_t* ch)
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{
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return DecodeUTF8(str.data() + offset, str.length() - offset, ch);
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}
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#ifdef _WIN32
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std::wstring UTF8StringToWideString(const std::string_view& str)
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{
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std::wstring ret;
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if (!UTF8StringToWideString(ret, str))
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return {};
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return ret;
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}
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bool UTF8StringToWideString(std::wstring& dest, const std::string_view& str)
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{
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int wlen = MultiByteToWideChar(CP_UTF8, 0, str.data(), static_cast<int>(str.length()), nullptr, 0);
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if (wlen < 0)
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return false;
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dest.resize(wlen);
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if (wlen > 0 && MultiByteToWideChar(CP_UTF8, 0, str.data(), static_cast<int>(str.length()), dest.data(), wlen) < 0)
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return false;
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return true;
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}
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std::string WideStringToUTF8String(const std::wstring_view& str)
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{
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std::string ret;
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if (!WideStringToUTF8String(ret, str))
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ret.clear();
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return ret;
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}
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bool WideStringToUTF8String(std::string& dest, const std::wstring_view& str)
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{
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int mblen = WideCharToMultiByte(CP_UTF8, 0, str.data(), static_cast<int>(str.length()), nullptr, 0, nullptr, nullptr);
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if (mblen < 0)
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return false;
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dest.resize(mblen);
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if (mblen > 0 && WideCharToMultiByte(CP_UTF8, 0, str.data(), static_cast<int>(str.length()), dest.data(), mblen,
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nullptr, nullptr) < 0)
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{
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return false;
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}
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return true;
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}
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#endif
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std::string U128ToString(const u128& u)
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{
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return fmt::format("0x{:08X}.{:08X}.{:08X}.{:08X}", u._u32[0], u._u32[1], u._u32[2], u._u32[3]);
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}
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std::string& AppendU128ToString(const u128& u, std::string& s)
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{
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fmt::format_to(std::back_inserter(s), "0x{:08X}.{:08X}.{:08X}.{:08X}", u._u32[0], u._u32[1], u._u32[2], u._u32[3]);
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return s;
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}
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} // namespace StringUtil
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