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Common: Add StringUtil

This commit is contained in:
Connor McLaughlin 2021-09-14 19:09:09 +10:00 committed by Kojin
parent 4d8905abd6
commit 171a395369
5 changed files with 488 additions and 0 deletions
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2
common/CMakeLists.txt
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@ -30,6 +30,7 @@ target_sources(common PRIVATE
RwMutex.cpp
Semaphore.cpp
StringHelpers.cpp
StringUtil.cpp
ThreadTools.cpp
wxGuiTools.cpp
wxHelpers.cpp
@ -80,6 +81,7 @@ target_sources(common PRIVATE
ScopedAlloc.h
ScopedPtrMT.h
StringHelpers.h
StringUtil.h
Threading.h
TraceLog.h
wxBaseTools.h

260
common/StringUtil.cpp Normal file
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@ -0,0 +1,260 @@
/* PCSX2 - PS2 Emulator for PCs
* Copyright (C) 2002-2021 PCSX2 Dev Team
*
* PCSX2 is free software: you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with PCSX2.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include "PrecompiledHeader.h"
#include "StringUtil.h"
#include <cctype>
#include <codecvt>
#include <cstdio>
#include <sstream>
#ifdef _WIN32
#include "RedtapeWindows.h"
#endif
namespace StringUtil
{
std::string StdStringFromFormat(const char* format, ...)
{
std::va_list ap;
va_start(ap, format);
std::string ret = StdStringFromFormatV(format, ap);
va_end(ap);
return ret;
}
std::string StdStringFromFormatV(const char* format, std::va_list ap)
{
std::va_list ap_copy;
va_copy(ap_copy, ap);
#ifdef _WIN32
int len = _vscprintf(format, ap_copy);
#else
int len = std::vsnprintf(nullptr, 0, format, ap_copy);
#endif
va_end(ap_copy);
std::string ret;
ret.resize(len);
std::vsnprintf(ret.data(), ret.size() + 1, format, ap);
return ret;
}
bool WildcardMatch(const char* subject, const char* mask, bool case_sensitive /*= true*/)
{
if (case_sensitive)
{
const char* cp = nullptr;
const char* mp = nullptr;
while ((*subject) && (*mask != '*'))
{
if ((*mask != '?') && (std::tolower(*mask) != std::tolower(*subject)))
return false;
mask++;
subject++;
}
while (*subject)
{
if (*mask == '*')
{
if (*++mask == 0)
return true;
mp = mask;
cp = subject + 1;
}
else
{
if ((*mask == '?') || (std::tolower(*mask) == std::tolower(*subject)))
{
mask++;
subject++;
}
else
{
mask = mp;
subject = cp++;
}
}
}
while (*mask == '*')
{
mask++;
}
return *mask == 0;
}
else
{
const char* cp = nullptr;
const char* mp = nullptr;
while ((*subject) && (*mask != '*'))
{
if ((*mask != *subject) && (*mask != '?'))
return false;
mask++;
subject++;
}
while (*subject)
{
if (*mask == '*')
{
if (*++mask == 0)
return true;
mp = mask;
cp = subject + 1;
}
else
{
if ((*mask == *subject) || (*mask == '?'))
{
mask++;
subject++;
}
else
{
mask = mp;
subject = cp++;
}
}
}
while (*mask == '*')
{
mask++;
}
return *mask == 0;
}
}
std::size_t Strlcpy(char* dst, const char* src, std::size_t size)
{
std::size_t len = std::strlen(src);
if (len < size)
{
std::memcpy(dst, src, len + 1);
}
else
{
std::memcpy(dst, src, size - 1);
dst[size - 1] = '\0';
}
return len;
}
std::size_t Strlcpy(char* dst, const std::string_view& src, std::size_t size)
{
std::size_t len = src.length();
if (len < size)
{
std::memcpy(dst, src.data(), len);
dst[len] = '\0';
}
else
{
std::memcpy(dst, src.data(), size - 1);
dst[size - 1] = '\0';
}
return len;
}
std::optional<std::vector<u8>> DecodeHex(const std::string_view& in)
{
std::vector<u8> data;
data.reserve(in.size() / 2);
for (size_t i = 0; i < in.size() / 2; i++)
{
std::optional<u8> byte = StringUtil::FromChars<u8>(in.substr(i * 2, 2), 16);
if (byte.has_value())
data.push_back(*byte);
else
return std::nullopt;
}
return {data};
}
std::string EncodeHex(const u8* data, int length)
{
std::stringstream ss;
for (int i = 0; i < length; i++)
ss << std::hex << std::setfill('0') << std::setw(2) << static_cast<int>(data[i]);
return ss.str();
}
#ifdef _WIN32
std::wstring UTF8StringToWideString(const std::string_view& str)
{
std::wstring ret;
if (!UTF8StringToWideString(ret, str))
return {};
return ret;
}
bool UTF8StringToWideString(std::wstring& dest, const std::string_view& str)
{
int wlen = MultiByteToWideChar(CP_UTF8, 0, str.data(), static_cast<int>(str.length()), nullptr, 0);
if (wlen < 0)
return false;
dest.resize(wlen);
if (wlen > 0 && MultiByteToWideChar(CP_UTF8, 0, str.data(), static_cast<int>(str.length()), dest.data(), wlen) < 0)
return false;
return true;
}
std::string WideStringToUTF8String(const std::wstring_view& str)
{
std::string ret;
if (!WideStringToUTF8String(ret, str))
return {};
return ret;
}
bool WideStringToUTF8String(std::string& dest, const std::wstring_view& str)
{
int mblen = WideCharToMultiByte(CP_UTF8, 0, str.data(), static_cast<int>(str.length()), nullptr, 0, nullptr, nullptr);
if (mblen < 0)
return false;
dest.resize(mblen);
if (mblen > 0 && WideCharToMultiByte(CP_UTF8, 0, str.data(), static_cast<int>(str.length()), dest.data(), mblen,
nullptr, nullptr) < 0)
{
return false;
}
return true;
}
#endif
} // namespace StringUtil

218
common/StringUtil.h Normal file
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@ -0,0 +1,218 @@
/* PCSX2 - PS2 Emulator for PCs
* Copyright (C) 2002-2021 PCSX2 Dev Team
*
* PCSX2 is free software: you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with PCSX2.
* If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include "Pcsx2Types.h"
#include <cstdarg>
#include <cstddef>
#include <cstring>
#include <iomanip>
#include <optional>
#include <string>
#include <string_view>
#include <vector>
#if defined(__has_include) && __has_include(<charconv>)
#include <charconv>
#ifndef _MSC_VER
#include <sstream>
#endif
#else
#include <sstream>
#endif
// TODO: Remove me once wx is gone.
#include <wx/string.h>
namespace StringUtil
{
/// Constructs a std::string from a format string.
#ifdef __GNUC__
std::string StdStringFromFormat(const char* format, ...) __attribute__((format(printf, 1, 2)));
#else
std::string StdStringFromFormat(const char* format, ...);
#endif
std::string StdStringFromFormatV(const char* format, std::va_list ap);
/// Checks if a wildcard matches a search string.
bool WildcardMatch(const char* subject, const char* mask, bool case_sensitive = true);
/// Safe version of strlcpy.
std::size_t Strlcpy(char* dst, const char* src, std::size_t size);
/// Strlcpy from string_view.
std::size_t Strlcpy(char* dst, const std::string_view& src, std::size_t size);
/// Platform-independent strcasecmp
static inline int Strcasecmp(const char* s1, const char* s2)
{
#ifdef _MSC_VER
return _stricmp(s1, s2);
#else
return strcasecmp(s1, s2);
#endif
}
/// Platform-independent strcasecmp
static inline int Strncasecmp(const char* s1, const char* s2, std::size_t n)
{
#ifdef _MSC_VER
return _strnicmp(s1, s2, n);
#else
return strncasecmp(s1, s2, n);
#endif
}
/// Wrapper arond std::from_chars
template <typename T, std::enable_if_t<std::is_integral<T>::value, bool> = true>
inline std::optional<T> FromChars(const std::string_view& str, int base = 10)
{
T value;
#if defined(__has_include) && __has_include(<charconv>)
const std::from_chars_result result = std::from_chars(str.data(), str.data() + str.length(), value, base);
if (result.ec != std::errc())
return std::nullopt;
#else
std::string temp(str);
std::istringstream ss(temp);
ss >> std::setbase(base) >> value;
if (ss.fail())
return std::nullopt;
#endif
return value;
}
template <typename T, std::enable_if_t<std::is_floating_point<T>::value, bool> = true>
inline std::optional<T> FromChars(const std::string_view& str)
{
T value;
#if defined(__has_include) && __has_include(<charconv>) && defined(_MSC_VER)
const std::from_chars_result result = std::from_chars(str.data(), str.data() + str.length(), value);
if (result.ec != std::errc())
return std::nullopt;
#else
/// libstdc++ does not support from_chars with floats yet
std::string temp(str);
std::istringstream ss(temp);
ss >> value;
if (ss.fail())
return std::nullopt;
#endif
return value;
}
/// Explicit override for booleans
template <>
inline std::optional<bool> FromChars(const std::string_view& str, int base)
{
if (Strncasecmp("true", str.data(), str.length()) == 0 || Strncasecmp("yes", str.data(), str.length()) == 0 ||
Strncasecmp("on", str.data(), str.length()) == 0 || Strncasecmp("1", str.data(), str.length()) == 0 ||
Strncasecmp("enabled", str.data(), str.length()) == 0 || Strncasecmp("1", str.data(), str.length()) == 0)
{
return true;
}
if (Strncasecmp("false", str.data(), str.length()) == 0 || Strncasecmp("no", str.data(), str.length()) == 0 ||
Strncasecmp("off", str.data(), str.length()) == 0 || Strncasecmp("0", str.data(), str.length()) == 0 ||
Strncasecmp("disabled", str.data(), str.length()) == 0 || Strncasecmp("0", str.data(), str.length()) == 0)
{
return false;
}
return std::nullopt;
}
/// Encode/decode hexadecimal byte buffers
std::optional<std::vector<u8>> DecodeHex(const std::string_view& str);
std::string EncodeHex(const u8* data, int length);
/// starts_with from C++20
static inline bool StartsWith(const std::string_view& str, const char* prefix)
{
return (str.compare(0, std::strlen(prefix), prefix) == 0);
}
static inline bool EndsWith(const std::string_view& str, const char* suffix)
{
const std::size_t suffix_length = std::strlen(suffix);
return (str.length() >= suffix_length && str.compare(str.length() - suffix_length, suffix_length, suffix) == 0);
}
/// Strided memcpy/memcmp.
static inline void StrideMemCpy(void* dst, std::size_t dst_stride, const void* src, std::size_t src_stride,
std::size_t copy_size, std::size_t count)
{
const u8* src_ptr = static_cast<const u8*>(src);
u8* dst_ptr = static_cast<u8*>(dst);
for (std::size_t i = 0; i < count; i++)
{
std::memcpy(dst_ptr, src_ptr, copy_size);
src_ptr += src_stride;
dst_ptr += dst_stride;
}
}
static inline int StrideMemCmp(const void* p1, std::size_t p1_stride, const void* p2, std::size_t p2_stride,
std::size_t copy_size, std::size_t count)
{
const u8* p1_ptr = static_cast<const u8*>(p1);
const u8* p2_ptr = static_cast<const u8*>(p2);
for (std::size_t i = 0; i < count; i++)
{
int result = std::memcmp(p1_ptr, p2_ptr, copy_size);
if (result != 0)
return result;
p2_ptr += p2_stride;
p1_ptr += p1_stride;
}
return 0;
}
/// Converts a wxString to a UTF-8 std::string.
static std::string wxStringToUTF8String(const wxString& str)
{
const wxScopedCharBuffer buf(str.ToUTF8());
return std::string(buf.data(), buf.length());
}
/// Converts a UTF-8 std::string to a wxString.
static wxString UTF8StringToWxString(const std::string_view& str)
{
return wxString::FromUTF8(str.data(), str.length());
}
/// Converts a UTF-8 std::string to a wxString.
static wxString UTF8StringToWxString(const std::string& str)
{
return wxString::FromUTF8(str.data(), str.length());
}
#ifdef _WIN32
/// Converts the specified UTF-8 string to a wide string.
std::wstring UTF8StringToWideString(const std::string_view& str);
bool UTF8StringToWideString(std::wstring& dest, const std::string_view& str);
/// Converts the specified wide string to a UTF-8 string.
std::string WideStringToUTF8String(const std::wstring_view& str);
bool WideStringToUTF8String(std::string& dest, const std::wstring_view& str);
#endif
} // namespace StringUtil

2
common/common.vcxproj
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@ -52,6 +52,7 @@
<ClCompile Include="pxStreams.cpp" />
<ClCompile Include="pxTranslate.cpp" />
<ClCompile Include="pxWindowTextWriter.cpp" />
<ClCompile Include="StringUtil.cpp" />
<ClCompile Include="VirtualMemory.cpp" />
<ClCompile Include="x86\MemcpyFast.cpp" />
<ClCompile Include="PathUtils.cpp" />
@ -99,6 +100,7 @@
<ClInclude Include="boost_spsc_queue.hpp" />
<ClInclude Include="FastJmp.h" />
<ClInclude Include="ScopedAlloc.h" />
<ClInclude Include="StringUtil.h" />
<ClInclude Include="ThreadingInternal.h" />
<ClInclude Include="Assertions.h" />
<ClInclude Include="Console.h" />

6
common/common.vcxproj.filters
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@ -121,6 +121,9 @@
<ClCompile Include="FastJmp.cpp">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="StringUtil.cpp">
<Filter>Source Files</Filter>
</ClCompile>
</ItemGroup>
<ItemGroup>
<ClInclude Include="Assertions.h">
@ -270,6 +273,9 @@
<ClInclude Include="FastJmp.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="StringUtil.h">
<Filter>Header Files</Filter>
</ClInclude>
</ItemGroup>
<ItemGroup>
<Filter Include="Source Files">