citra/src/common/string_util.cpp
BreadFish64 36e368ff99 remove Common::TrimSourcePath
wwylele / 白疾風Today at 6:14 PM
I doubt the performance of constructing regex everytime the function is called
Is TrimSourcePath only called by logging? if so, you can move the implementation into logging, and cache the regex object into global
This function is probably too specific to be in common anyway
2019-03-10 19:18:09 -05:00

212 lines
5.9 KiB
C++

// Copyright 2013 Dolphin Emulator Project / 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <cctype>
#include <codecvt>
#include <cstdlib>
#include <locale>
#include <sstream>
#include "common/common_paths.h"
#include "common/logging/log.h"
#include "common/string_util.h"
#ifdef _WIN32
#include <windows.h>
#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;
}
// Turns " hej " into "hej". Also handles tabs.
std::string StripSpaces(const std::string& str) {
const std::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;
}
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;
std::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;
std::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<std::string>& output) {
std::istringstream iss(str);
output.resize(1);
while (std::getline(iss, *output.rbegin(), delim)) {
output.emplace_back();
}
output.pop_back();
}
std::string TabsToSpaces(int tab_size, std::string in) {
std::size_t i = 0;
while ((i = in.find('\t')) != std::string::npos) {
in.replace(i, 1, tab_size, ' ');
}
return in;
}
std::string ReplaceAll(std::string result, const std::string& src, const std::string& dest) {
std::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;
}
std::string UTF16ToUTF8(const std::u16string& input) {
#ifdef _MSC_VER
// Workaround for missing char16_t/char32_t instantiations in MSVC2017
std::wstring_convert<std::codecvt_utf8_utf16<__int16>, __int16> convert;
std::basic_string<__int16> tmp_buffer(input.cbegin(), input.cend());
return convert.to_bytes(tmp_buffer);
#else
std::wstring_convert<std::codecvt_utf8_utf16<char16_t>, char16_t> convert;
return convert.to_bytes(input);
#endif
}
std::u16string UTF8ToUTF16(const std::string& input) {
#ifdef _MSC_VER
// Workaround for missing char16_t/char32_t instantiations in MSVC2017
std::wstring_convert<std::codecvt_utf8_utf16<__int16>, __int16> convert;
auto tmp_buffer = convert.from_bytes(input);
return std::u16string(tmp_buffer.cbegin(), tmp_buffer.cend());
#else
std::wstring_convert<std::codecvt_utf8_utf16<char16_t>, char16_t> convert;
return convert.from_bytes(input);
#endif
}
#ifdef _WIN32
static std::wstring CPToUTF16(u32 code_page, const std::string& input) {
const auto size =
MultiByteToWideChar(code_page, 0, input.data(), static_cast<int>(input.size()), nullptr, 0);
if (size == 0) {
return L"";
}
std::wstring output(size, L'\0');
if (size != MultiByteToWideChar(code_page, 0, input.data(), static_cast<int>(input.size()),
&output[0], static_cast<int>(output.size()))) {
output.clear();
}
return output;
}
std::string UTF16ToUTF8(const std::wstring& input) {
const auto size = WideCharToMultiByte(CP_UTF8, 0, input.data(), static_cast<int>(input.size()),
nullptr, 0, nullptr, nullptr);
if (size == 0) {
return "";
}
std::string output(size, '\0');
if (size != WideCharToMultiByte(CP_UTF8, 0, input.data(), static_cast<int>(input.size()),
&output[0], static_cast<int>(output.size()), nullptr,
nullptr)) {
output.clear();
}
return output;
}
std::wstring UTF8ToUTF16W(const std::string& input) {
return CPToUTF16(CP_UTF8, input);
}
#endif
std::string StringFromFixedZeroTerminatedBuffer(const char* buffer, std::size_t max_len) {
std::size_t len = 0;
while (len < max_len && buffer[len] != '\0')
++len;
return std::string(buffer, len);
}
} // namespace Common