early-access version 1255
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pineappleEA
227
src/common/string_util.cpp
Executable file
227
src/common/string_util.cpp
Executable file
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// Copyright 2013 Dolphin Emulator Project / 2014 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <algorithm>
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#include <cctype>
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#include <codecvt>
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#include <cstdlib>
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#include <locale>
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#include <sstream>
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#include "common/common_paths.h"
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#include "common/logging/log.h"
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#include "common/string_util.h"
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#ifdef _WIN32
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#include <windows.h>
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#endif
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namespace Common {
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/// Make a string lowercase
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std::string ToLower(std::string str) {
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std::transform(str.begin(), str.end(), str.begin(),
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[](unsigned char c) { return static_cast<char>(std::tolower(c)); });
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return str;
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}
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/// Make a string uppercase
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std::string ToUpper(std::string str) {
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std::transform(str.begin(), str.end(), str.begin(),
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[](unsigned char c) { return static_cast<char>(std::toupper(c)); });
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return str;
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}
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std::string StringFromBuffer(const std::vector<u8>& data) {
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return std::string(data.begin(), std::find(data.begin(), data.end(), '\0'));
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}
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// Turns " hej " into "hej". Also handles tabs.
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std::string StripSpaces(const std::string& str) {
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const std::size_t s = str.find_first_not_of(" \t\r\n");
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if (str.npos != s)
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return str.substr(s, str.find_last_not_of(" \t\r\n") - s + 1);
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else
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return "";
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}
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// "\"hello\"" is turned to "hello"
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// This one assumes that the string has already been space stripped in both
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// ends, as done by StripSpaces above, for example.
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std::string StripQuotes(const std::string& s) {
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if (s.size() && '\"' == s[0] && '\"' == *s.rbegin())
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return s.substr(1, s.size() - 2);
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else
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return s;
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}
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std::string StringFromBool(bool value) {
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return value ? "True" : "False";
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}
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bool SplitPath(const std::string& full_path, std::string* _pPath, std::string* _pFilename,
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std::string* _pExtension) {
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if (full_path.empty())
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return false;
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std::size_t dir_end = full_path.find_last_of("/"
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// windows needs the : included for something like just "C:" to be considered a directory
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#ifdef _WIN32
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"\\:"
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#endif
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);
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if (std::string::npos == dir_end)
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dir_end = 0;
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else
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dir_end += 1;
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std::size_t fname_end = full_path.rfind('.');
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if (fname_end < dir_end || std::string::npos == fname_end)
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fname_end = full_path.size();
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if (_pPath)
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*_pPath = full_path.substr(0, dir_end);
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if (_pFilename)
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*_pFilename = full_path.substr(dir_end, fname_end - dir_end);
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if (_pExtension)
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*_pExtension = full_path.substr(fname_end);
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return true;
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}
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void BuildCompleteFilename(std::string& _CompleteFilename, const std::string& _Path,
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const std::string& _Filename) {
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_CompleteFilename = _Path;
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// check for seperator
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if (DIR_SEP_CHR != *_CompleteFilename.rbegin())
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_CompleteFilename += DIR_SEP_CHR;
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// add the filename
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_CompleteFilename += _Filename;
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}
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void SplitString(const std::string& str, const char delim, std::vector<std::string>& output) {
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std::istringstream iss(str);
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output.resize(1);
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while (std::getline(iss, *output.rbegin(), delim)) {
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output.emplace_back();
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}
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output.pop_back();
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}
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std::string TabsToSpaces(int tab_size, std::string in) {
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std::size_t i = 0;
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while ((i = in.find('\t')) != std::string::npos) {
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in.replace(i, 1, tab_size, ' ');
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}
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return in;
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}
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std::string ReplaceAll(std::string result, const std::string& src, const std::string& dest) {
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std::size_t pos = 0;
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if (src == dest)
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return result;
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while ((pos = result.find(src, pos)) != std::string::npos) {
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result.replace(pos, src.size(), dest);
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pos += dest.length();
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}
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return result;
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}
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std::string UTF16ToUTF8(const std::u16string& input) {
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#ifdef _MSC_VER
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// Workaround for missing char16_t/char32_t instantiations in MSVC2017
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std::wstring_convert<std::codecvt_utf8_utf16<__int16>, __int16> convert;
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std::basic_string<__int16> tmp_buffer(input.cbegin(), input.cend());
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return convert.to_bytes(tmp_buffer);
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#else
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std::wstring_convert<std::codecvt_utf8_utf16<char16_t>, char16_t> convert;
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return convert.to_bytes(input);
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#endif
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}
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std::u16string UTF8ToUTF16(const std::string& input) {
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#ifdef _MSC_VER
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// Workaround for missing char16_t/char32_t instantiations in MSVC2017
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std::wstring_convert<std::codecvt_utf8_utf16<__int16>, __int16> convert;
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auto tmp_buffer = convert.from_bytes(input);
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return std::u16string(tmp_buffer.cbegin(), tmp_buffer.cend());
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#else
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std::wstring_convert<std::codecvt_utf8_utf16<char16_t>, char16_t> convert;
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return convert.from_bytes(input);
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#endif
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}
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#ifdef _WIN32
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static std::wstring CPToUTF16(u32 code_page, const std::string& input) {
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const auto size =
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MultiByteToWideChar(code_page, 0, input.data(), static_cast<int>(input.size()), nullptr, 0);
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if (size == 0) {
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return L"";
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}
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std::wstring output(size, L'\0');
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if (size != MultiByteToWideChar(code_page, 0, input.data(), static_cast<int>(input.size()),
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&output[0], static_cast<int>(output.size()))) {
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output.clear();
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}
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return output;
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}
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std::string UTF16ToUTF8(const std::wstring& input) {
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const auto size = WideCharToMultiByte(CP_UTF8, 0, input.data(), static_cast<int>(input.size()),
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nullptr, 0, nullptr, nullptr);
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if (size == 0) {
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return "";
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}
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std::string output(size, '\0');
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if (size != WideCharToMultiByte(CP_UTF8, 0, input.data(), static_cast<int>(input.size()),
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&output[0], static_cast<int>(output.size()), nullptr,
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nullptr)) {
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output.clear();
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}
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return output;
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}
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std::wstring UTF8ToUTF16W(const std::string& input) {
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return CPToUTF16(CP_UTF8, input);
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}
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#endif
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std::string StringFromFixedZeroTerminatedBuffer(const char* buffer, std::size_t max_len) {
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std::size_t len = 0;
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while (len < max_len && buffer[len] != '\0')
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++len;
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return std::string(buffer, len);
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}
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std::u16string UTF16StringFromFixedZeroTerminatedBuffer(std::u16string_view buffer,
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std::size_t max_len) {
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std::size_t len = 0;
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while (len < max_len && buffer[len] != '\0')
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++len;
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return std::u16string(buffer.begin(), buffer.begin() + len);
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}
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} // namespace Common
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