yuzu/src/common/string_util.cpp

293 lines
7.7 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 <cerrno>
#include <codecvt>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#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;
}
// For Debugging. Read out an u8 array.
std::string ArrayToString(const u8* data, std::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();
}
std::string StringFromBuffer(const std::vector<u8>& data) {
return std::string(data.begin(), std::find(data.begin(), data.end(), '\0'));
}
// 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;
}
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<u32>(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;
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);
}
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