3#ifndef CPP_UTILITIES_NO_THREAD_LOCAL
4#include "../feature_detection/features.h"
7#ifndef CPP_UTILITIES_THREAD_LOCAL
8#define CPP_UTILITIES_THREAD_LOCAL
21#ifdef PLATFORM_WINDOWS
39 size_t operator()(
size_t value)
45 size_t operator()(
size_t value)
51 size_t operator()(
size_t value)
59 size_t operator()(
size_t value)
61 return static_cast<size_t>(
static_cast<float>(value) * factor);
66template <
class OutputSizeH
int>
class ConversionDescriptor {
68 ConversionDescriptor(
const char *fromCharset,
const char *toCharset)
69 : m_ptr(iconv_open(toCharset, fromCharset))
70 , m_outputSizeHint(OutputSizeHint())
72 if (m_ptr ==
reinterpret_cast<iconv_t
>(-1)) {
73 throw ConversionException(
"Unable to allocate descriptor for character set conversion.");
77 ConversionDescriptor(
const char *fromCharset,
const char *toCharset, OutputSizeHint outputSizeHint)
78 : m_ptr(iconv_open(toCharset, fromCharset))
79 , m_outputSizeHint(outputSizeHint)
81 if (m_ptr ==
reinterpret_cast<iconv_t
>(-1)) {
82 throw ConversionException(
"Unable to allocate descriptor for character set conversion.");
86 ~ConversionDescriptor()
92 StringData convertString(
const char *inputBuffer,
size_t inputBufferSize)
95 size_t inputBytesLeft = inputBufferSize;
96 size_t outputSize = m_outputSizeHint(inputBufferSize);
97 size_t outputBytesLeft = outputSize;
98 char *outputBuffer =
reinterpret_cast<char *
>(malloc(outputSize));
101 char *currentOutputOffset = outputBuffer;
102 for (;; currentOutputOffset = outputBuffer + bytesWritten) {
103 bytesWritten = iconv(m_ptr,
const_cast<char **
>(&inputBuffer), &inputBytesLeft, ¤tOutputOffset, &outputBytesLeft);
104 if (bytesWritten ==
static_cast<size_t>(-1)) {
105 if (errno == EINVAL) {
107 bytesWritten =
static_cast<size_t>(currentOutputOffset - outputBuffer);
109 }
else if (errno == E2BIG) {
111 bytesWritten =
static_cast<size_t>(currentOutputOffset - outputBuffer);
112 outputBytesLeft = (outputSize += m_outputSizeHint(inputBytesLeft)) - bytesWritten;
113 outputBuffer =
reinterpret_cast<char *
>(realloc(outputBuffer, outputSize));
117 throw ConversionException(
"Invalid multibyte sequence in the input.");
124 return StringData(std::unique_ptr<
char[], StringDataDeleter>(outputBuffer), currentOutputOffset - outputBuffer);
129 OutputSizeHint m_outputSizeHint;
144 const char *fromCharset,
const char *toCharset,
const char *inputBuffer, std::size_t inputBufferSize,
float outputBufferSizeFactor)
146 return ConversionDescriptor<Factor>(fromCharset, toCharset, outputBufferSizeFactor).convertString(inputBuffer, inputBufferSize);
155 return descriptor.convertString(inputBuffer, inputBufferSize);
164 return descriptor.convertString(inputBuffer, inputBufferSize);
173 return descriptor.convertString(inputBuffer, inputBufferSize);
182 return descriptor.convertString(inputBuffer, inputBufferSize);
191 return descriptor.convertString(inputBuffer, inputBufferSize);
200 return descriptor.convertString(inputBuffer, inputBufferSize);
203#ifdef PLATFORM_WINDOWS
208std::wstring convertMultiByteToWide(std::error_code &ec, std::string_view inputBuffer)
211 auto widePath = std::wstring();
212 auto size = MultiByteToWideChar(CP_UTF8, 0, inputBuffer.data(), inputBuffer.size(),
nullptr, 0);
214 ec = std::error_code(GetLastError(), std::system_category());
218 widePath.resize(
static_cast<std::wstring::size_type
>(size));
219 size = MultiByteToWideChar(CP_UTF8, 0, inputBuffer.data(), inputBuffer.size(), widePath.data(), size);
221 ec = std::error_code(GetLastError(), std::system_category());
233WideStringData convertMultiByteToWide(std::error_code &ec,
const char *inputBuffer,
int inputBufferSize)
236 WideStringData widePath;
237 widePath.second = MultiByteToWideChar(CP_UTF8, 0, inputBuffer, inputBufferSize,
nullptr, 0);
238 if (widePath.second <= 0) {
239 ec = std::error_code(GetLastError(), std::system_category());
243 widePath.first = make_unique<wchar_t[]>(
static_cast<size_t>(widePath.second));
244 widePath.second = MultiByteToWideChar(CP_UTF8, 0, inputBuffer, inputBufferSize, widePath.first.get(), widePath.second);
245 if (widePath.second <= 0) {
246 ec = std::error_code(GetLastError(), std::system_category());
247 widePath.first.reset();
256WideStringData convertMultiByteToWide(std::error_code &ec,
const std::string &inputBuffer)
258 return convertMultiByteToWide(ec, inputBuffer.data(),
259 inputBuffer.size() <
static_cast<std::size_t
>(std::numeric_limits<int>::max() - 1) ?
static_cast<int>(inputBuffer.size() + 1) : -1);
268WideStringData convertMultiByteToWide(
const char *inputBuffer,
int inputBufferSize)
271 return convertMultiByteToWide(ec, inputBuffer, inputBufferSize);
278WideStringData convertMultiByteToWide(
const std::string &inputBuffer)
281 return convertMultiByteToWide(ec, inputBuffer);
291 string::size_type firstNullByte = str.find(terminationChar);
292 if (firstNullByte != string::npos) {
293 str.resize(firstNullByte);
304 stringstream res(stringstream::in | stringstream::out);
305 res.setf(ios::fixed, ios::floatfield);
306 res << setprecision(2);
307 if (sizeInByte < 1024LL) {
308 res << sizeInByte <<
" bytes";
309 }
else if (sizeInByte < 1048576LL) {
310 res << (static_cast<double>(sizeInByte) / 1024.0) <<
" KiB";
311 }
else if (sizeInByte < 1073741824LL) {
312 res << (static_cast<double>(sizeInByte) / 1048576.0) <<
" MiB";
313 }
else if (sizeInByte < 1099511627776LL) {
314 res << (static_cast<double>(sizeInByte) / 1073741824.0) <<
" GiB";
316 res << (static_cast<double>(sizeInByte) / 1099511627776.0) <<
" TiB";
318 if (includeByte && sizeInByte > 1024LL) {
319 res <<
' ' <<
'(' << sizeInByte <<
" byte)";
336 stringstream res(stringstream::in | stringstream::out);
337 res << setprecision(3);
338 if (std::isnan(bitrateInKbitsPerSecond)) {
339 res <<
"indeterminable";
340 }
else if (useIecBinaryPrefixes) {
341 if (bitrateInKbitsPerSecond < 8.0) {
342 res << (bitrateInKbitsPerSecond * 125.0) <<
" byte/s";
343 }
else if (bitrateInKbitsPerSecond < 8000.0) {
344 res << (bitrateInKbitsPerSecond * 0.125) <<
" KiB/s";
345 }
else if (bitrateInKbitsPerSecond < 8000000.0) {
346 res << (bitrateInKbitsPerSecond * 0.000125) <<
" MiB/s";
348 res << (bitrateInKbitsPerSecond * 0.000000125) <<
" GiB/s";
351 if (bitrateInKbitsPerSecond < 1.0) {
352 res << (bitrateInKbitsPerSecond * 1000.0) <<
" bit/s";
353 }
else if (bitrateInKbitsPerSecond < 1000.0) {
354 res << (bitrateInKbitsPerSecond) <<
" kbit/s";
355 }
else if (bitrateInKbitsPerSecond < 1000000.0) {
356 res << (bitrateInKbitsPerSecond * 0.001) <<
" Mbit/s";
358 res << (bitrateInKbitsPerSecond * 0.000001) <<
" Gbit/s";
365const char *
const base64Chars =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
366const char base64Pad =
'=';
375 auto encoded = std::string();
376 auto mod =
static_cast<std::uint8_t
>(dataSize % 3);
377 auto temp = std::uint32_t();
378 encoded.reserve(((dataSize / 3) + (mod > 0)) * 4);
379 for (
const std::uint8_t *end = --data + dataSize - mod; data != end;) {
380 temp =
static_cast<std::uint32_t
>(*++data << 16);
381 temp |=
static_cast<std::uint32_t
>(*++data << 8);
383 encoded.push_back(base64Chars[(temp & 0x00FC0000) >> 18]);
384 encoded.push_back(base64Chars[(temp & 0x0003F000) >> 12]);
385 encoded.push_back(base64Chars[(temp & 0x00000FC0) >> 6]);
386 encoded.push_back(base64Chars[(temp & 0x0000003F)]);
390 temp =
static_cast<std::uint32_t
>(*++data << 16);
391 encoded.push_back(base64Chars[(temp & 0x00FC0000) >> 18]);
392 encoded.push_back(base64Chars[(temp & 0x0003F000) >> 12]);
393 encoded.push_back(base64Pad);
394 encoded.push_back(base64Pad);
397 temp =
static_cast<std::uint32_t
>(*++data << 16);
398 temp |=
static_cast<std::uint32_t
>(*++data << 8);
399 encoded.push_back(base64Chars[(temp & 0x00FC0000) >> 18]);
400 encoded.push_back(base64Chars[(temp & 0x0003F000) >> 12]);
401 encoded.push_back(base64Chars[(temp & 0x00000FC0) >> 6]);
402 encoded.push_back(base64Pad);
413pair<unique_ptr<std::uint8_t[]>, std::uint32_t>
decodeBase64(
const char *encodedStr,
const std::uint32_t strSize)
418 std::uint32_t decodedSize = (strSize / 4) * 3;
419 const char *
const end = encodedStr + strSize;
421 if (*(end - 1) == base64Pad) {
424 if (*(end - 2) == base64Pad) {
428 auto buffer = make_unique<std::uint8_t[]>(decodedSize);
429 auto *iter = buffer.get() - 1;
430 while (encodedStr < end) {
431 std::int32_t temp = 0;
432 for (std::uint8_t quantumPos = 0; quantumPos < 4; ++quantumPos, ++encodedStr) {
434 if (*encodedStr >=
'A' && *encodedStr <=
'Z') {
435 temp |= *encodedStr -
'A';
436 }
else if (*encodedStr >=
'a' && *encodedStr <=
'z') {
437 temp |= *encodedStr -
'a' + 26;
438 }
else if (*encodedStr >=
'0' && *encodedStr <=
'9') {
439 temp |= *encodedStr -
'0' + 2 * 26;
440 }
else if (*encodedStr ==
'+') {
442 }
else if (*encodedStr ==
'/') {
443 temp |= 2 * 26 + 10 + 1;
444 }
else if (*encodedStr == base64Pad) {
445 switch (end - encodedStr) {
447 *++iter =
static_cast<std::uint8_t
>((temp >> 16) & 0xFF);
448 *++iter =
static_cast<std::uint8_t
>((temp >> 8) & 0xFF);
449 return make_pair(std::move(buffer), decodedSize);
451 *++iter =
static_cast<std::uint8_t
>((temp >> 10) & 0xFF);
452 return make_pair(std::move(buffer), decodedSize);
460 *++iter =
static_cast<std::uint8_t
>((temp >> 16) & 0xFF);
461 *++iter =
static_cast<std::uint8_t
>((temp >> 8) & 0xFF);
462 *++iter =
static_cast<std::uint8_t
>(temp & 0xFF);
464 return make_pair(std::move(buffer), decodedSize);
The ConversionException class is thrown by the various conversion functions of this library when a co...
Contains all utilities provides by the c++utilities library.
CPP_UTILITIES_EXPORT StringData convertUtf8ToUtf16BE(const char *inputBuffer, std::size_t inputBufferSize)
Converts the specified UTF-8 string to UTF-16 (big-endian).
CPP_UTILITIES_EXPORT StringData convertString(const char *fromCharset, const char *toCharset, const char *inputBuffer, std::size_t inputBufferSize, float outputBufferSizeFactor=1.0f)
Converts the specified string from one character set to another.
CPP_UTILITIES_EXPORT StringData convertLatin1ToUtf8(const char *inputBuffer, std::size_t inputBufferSize)
Converts the specified Latin-1 string to UTF-8.
CPP_UTILITIES_EXPORT StringData convertUtf16LEToUtf8(const char *inputBuffer, std::size_t inputBufferSize)
Converts the specified UTF-16 (little-endian) string to UTF-8.
CPP_UTILITIES_EXPORT std::pair< std::unique_ptr< std::uint8_t[]>, std::uint32_t > decodeBase64(const char *encodedStr, const std::uint32_t strSize)
Decodes the specified Base64 encoded string.
CPP_UTILITIES_EXPORT void truncateString(std::string &str, char terminationChar='\0')
Truncates all characters after the first occurrence of the specified terminationChar and the terminat...
std::pair< std::unique_ptr< char[], StringDataDeleter >, std::size_t > StringData
Type used to return string encoding conversion result.
CPP_UTILITIES_EXPORT StringData convertUtf16BEToUtf8(const char *inputBuffer, std::size_t inputBufferSize)
Converts the specified UTF-16 (big-endian) string to UTF-8.
CPP_UTILITIES_EXPORT StringData convertUtf8ToLatin1(const char *inputBuffer, std::size_t inputBufferSize)
Converts the specified UTF-8 string to Latin-1.
CPP_UTILITIES_EXPORT StringData convertUtf8ToUtf16LE(const char *inputBuffer, std::size_t inputBufferSize)
Converts the specified UTF-8 string to UTF-16 (little-endian).
CPP_UTILITIES_EXPORT std::string bitrateToString(double speedInKbitsPerSecond, bool useByteInsteadOfBits=false)
Converts the specified bitrate in kbit/s to its equivalent std::string representation.
CPP_UTILITIES_EXPORT std::string encodeBase64(const std::uint8_t *data, std::uint32_t dataSize)
Encodes the specified data to Base64.
CPP_UTILITIES_EXPORT std::string dataSizeToString(std::uint64_t sizeInByte, bool includeByte=false)
Converts the specified data size in byte to its equivalent std::string representation.
#define CPP_UTILITIES_THREAD_LOCAL