481 lines
12 KiB
C++
481 lines
12 KiB
C++
// 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 <boost/range/algorithm.hpp>
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#include "common/common_funcs.h"
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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 _MSC_VER
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#include <Windows.h>
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#include <codecvt>
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#else
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#include <iconv.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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boost::transform(str, str.begin(), ::tolower);
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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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boost::transform(str, str.begin(), ::toupper);
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return str;
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}
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// faster than sscanf
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bool AsciiToHex(const char* _szValue, u32& result)
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{
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char *endptr = nullptr;
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const u32 value = strtoul(_szValue, &endptr, 16);
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if (!endptr || *endptr)
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return false;
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result = value;
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return true;
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}
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bool CharArrayFromFormatV(char* out, int outsize, const char* format, va_list args)
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{
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int writtenCount;
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#ifdef _MSC_VER
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// You would think *printf are simple, right? Iterate on each character,
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// if it's a format specifier handle it properly, etc.
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//
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// Nooooo. Not according to the C standard.
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//
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// According to the C99 standard (7.19.6.1 "The fprintf function")
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// The format shall be a multibyte character sequence
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//
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// Because some character encodings might have '%' signs in the middle of
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// a multibyte sequence (SJIS for example only specifies that the first
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// byte of a 2 byte sequence is "high", the second byte can be anything),
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// printf functions have to decode the multibyte sequences and try their
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// best to not screw up.
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//
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// Unfortunately, on Windows, the locale for most languages is not UTF-8
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// as we would need. Notably, for zh_TW, Windows chooses EUC-CN as the
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// locale, and completely fails when trying to decode UTF-8 as EUC-CN.
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//
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// On the other hand, the fix is simple: because we use UTF-8, no such
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// multibyte handling is required as we can simply assume that no '%' char
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// will be present in the middle of a multibyte sequence.
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//
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// This is why we lookup an ANSI (cp1252) locale here and use _vsnprintf_l.
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static locale_t c_locale = nullptr;
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if (!c_locale)
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c_locale = _create_locale(LC_ALL, ".1252");
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writtenCount = _vsnprintf_l(out, outsize, format, c_locale, args);
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#else
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writtenCount = vsnprintf(out, outsize, format, args);
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#endif
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if (writtenCount > 0 && writtenCount < outsize)
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{
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out[writtenCount] = '\0';
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return true;
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}
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else
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{
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out[outsize - 1] = '\0';
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return false;
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}
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}
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std::string StringFromFormat(const char* format, ...)
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{
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va_list args;
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char *buf = nullptr;
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#ifdef _WIN32
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int required = 0;
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va_start(args, format);
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required = _vscprintf(format, args);
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buf = new char[required + 1];
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CharArrayFromFormatV(buf, required + 1, format, args);
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va_end(args);
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std::string temp = buf;
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delete[] buf;
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#else
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va_start(args, format);
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if (vasprintf(&buf, format, args) < 0)
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LOG_ERROR(Common, "Unable to allocate memory for string");
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va_end(args);
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std::string temp = buf;
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free(buf);
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#endif
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return temp;
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}
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// For Debugging. Read out an u8 array.
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std::string ArrayToString(const u8 *data, u32 size, int line_len, bool spaces)
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{
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std::ostringstream oss;
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oss << std::setfill('0') << std::hex;
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for (int line = 0; size; ++data, --size)
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{
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oss << std::setw(2) << (int)*data;
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if (line_len == ++line)
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{
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oss << '\n';
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line = 0;
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}
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else if (spaces)
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oss << ' ';
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}
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return oss.str();
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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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{
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const 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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{
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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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bool TryParse(const std::string &str, u32 *const output)
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{
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char *endptr = nullptr;
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// Reset errno to a value other than ERANGE
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errno = 0;
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unsigned long value = strtoul(str.c_str(), &endptr, 0);
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if (!endptr || *endptr)
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return false;
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if (errno == ERANGE)
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return false;
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#if ULONG_MAX > UINT_MAX
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if (value >= 0x100000000ull
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&& value <= 0xFFFFFFFF00000000ull)
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return false;
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#endif
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*output = static_cast<u32>(value);
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return true;
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}
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bool TryParse(const std::string &str, bool *const output)
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{
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if ("1" == str || "true" == ToLower(str))
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*output = true;
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else if ("0" == str || "false" == ToLower(str))
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*output = false;
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else
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return false;
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return true;
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}
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std::string StringFromBool(bool value)
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{
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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, std::string* _pExtension)
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{
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if (full_path.empty())
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return false;
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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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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, const std::string& _Filename)
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{
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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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{
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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.push_back("");
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output.pop_back();
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}
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std::string TabsToSpaces(int tab_size, const std::string &in)
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{
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const std::string spaces(tab_size, ' ');
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std::string out(in);
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size_t i = 0;
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while (out.npos != (i = out.find('\t')))
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out.replace(i, 1, spaces);
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return out;
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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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{
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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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{
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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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#ifdef _MSC_VER
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std::string UTF16ToUTF8(const std::u16string& input)
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{
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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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}
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std::u16string UTF8ToUTF16(const std::string& input)
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{
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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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}
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static std::string UTF16ToUTF8(const std::wstring& input)
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{
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auto const size = WideCharToMultiByte(CP_UTF8, 0, input.data(), static_cast<int>(input.size()), nullptr, 0, nullptr, nullptr);
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std::string output;
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output.resize(size);
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if (size == 0 || size != WideCharToMultiByte(CP_UTF8, 0, input.data(), input.size(), &output[0], output.size(), nullptr, nullptr))
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output.clear();
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return output;
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}
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static std::wstring CPToUTF16(u32 code_page, const std::string& input)
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{
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auto const size = MultiByteToWideChar(code_page, 0, input.data(), static_cast<int>(input.size()), nullptr, 0);
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std::wstring output;
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output.resize(size);
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if (size == 0 || size != MultiByteToWideChar(code_page, 0, input.data(), static_cast<int>(input.size()), &output[0], static_cast<int>(output.size())))
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output.clear();
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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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{
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return CPToUTF16(CP_UTF8, input);
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}
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std::string SHIFTJISToUTF8(const std::string& input)
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{
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return UTF16ToUTF8(CPToUTF16(932, input));
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}
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std::string CP1252ToUTF8(const std::string& input)
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{
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return UTF16ToUTF8(CPToUTF16(1252, input));
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}
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#else
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template <typename T>
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static std::string CodeToUTF8(const char* fromcode, const std::basic_string<T>& input)
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{
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std::string result;
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iconv_t const conv_desc = iconv_open("UTF-8", fromcode);
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if ((iconv_t)(-1) == conv_desc)
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{
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LOG_ERROR(Common, "Iconv initialization failure [%s]: %s", fromcode, strerror(errno));
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iconv_close(conv_desc);
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return {};
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}
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const size_t in_bytes = sizeof(T) * input.size();
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// Multiply by 4, which is the max number of bytes to encode a codepoint
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const size_t out_buffer_size = 4 * in_bytes;
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std::string out_buffer;
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out_buffer.resize(out_buffer_size);
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auto src_buffer = &input[0];
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size_t src_bytes = in_bytes;
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auto dst_buffer = &out_buffer[0];
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size_t dst_bytes = out_buffer.size();
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while (0 != src_bytes)
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{
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size_t const iconv_result = iconv(conv_desc, (char**)(&src_buffer), &src_bytes,
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&dst_buffer, &dst_bytes);
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if (static_cast<size_t>(-1) == iconv_result)
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{
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if (EILSEQ == errno || EINVAL == errno)
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{
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// Try to skip the bad character
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if (0 != src_bytes)
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{
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--src_bytes;
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++src_buffer;
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}
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}
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else
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{
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LOG_ERROR(Common, "iconv failure [%s]: %s", fromcode, strerror(errno));
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break;
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}
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}
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}
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out_buffer.resize(out_buffer_size - dst_bytes);
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out_buffer.swap(result);
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iconv_close(conv_desc);
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return result;
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}
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std::u16string UTF8ToUTF16(const std::string& input)
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{
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std::u16string result;
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iconv_t const conv_desc = iconv_open("UTF-16LE", "UTF-8");
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if ((iconv_t)(-1) == conv_desc)
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{
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LOG_ERROR(Common, "Iconv initialization failure [UTF-8]: %s", strerror(errno));
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iconv_close(conv_desc);
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return {};
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}
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const size_t in_bytes = sizeof(char) * input.size();
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// Multiply by 4, which is the max number of bytes to encode a codepoint
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const size_t out_buffer_size = 4 * sizeof(char16_t) * in_bytes;
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std::u16string out_buffer;
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out_buffer.resize(out_buffer_size);
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char* src_buffer = const_cast<char*>(&input[0]);
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size_t src_bytes = in_bytes;
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char* dst_buffer = (char*)(&out_buffer[0]);
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size_t dst_bytes = out_buffer.size();
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while (0 != src_bytes)
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{
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size_t const iconv_result = iconv(conv_desc, &src_buffer, &src_bytes,
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&dst_buffer, &dst_bytes);
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if (static_cast<size_t>(-1) == iconv_result)
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{
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if (EILSEQ == errno || EINVAL == errno)
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{
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// Try to skip the bad character
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if (0 != src_bytes)
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{
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--src_bytes;
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++src_buffer;
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}
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}
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else
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{
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LOG_ERROR(Common, "iconv failure [UTF-8]: %s", strerror(errno));
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break;
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}
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}
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}
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out_buffer.resize(out_buffer_size - dst_bytes);
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out_buffer.swap(result);
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iconv_close(conv_desc);
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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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{
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return CodeToUTF8("UTF-16LE", input);
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}
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std::string CP1252ToUTF8(const std::string& input)
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{
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//return CodeToUTF8("CP1252//TRANSLIT", input);
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//return CodeToUTF8("CP1252//IGNORE", input);
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return CodeToUTF8("CP1252", input);
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}
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std::string SHIFTJISToUTF8(const std::string& input)
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{
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//return CodeToUTF8("CP932", input);
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return CodeToUTF8("SJIS", input);
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}
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#endif
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}
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