Textractor_test/GUI/host/textthread.cpp
2019-08-12 11:10:33 -04:00

93 lines
3.1 KiB
C++

#include "textthread.h"
#include "host.h"
#include "util.h"
extern const wchar_t* INVALID_CODEPAGE;
// return true if repetition found (see https://github.com/Artikash/Textractor/issues/40)
static bool RemoveRepetition(std::wstring& text)
{
wchar_t* end = text.data() + text.size();
for (int length = text.size() / 3; length > 6; --length)
if (memcmp(end - length * 3, end - length * 2, length * sizeof(wchar_t)) == 0 && memcmp(end - length * 3, end - length * 1, length * sizeof(wchar_t)) == 0)
return RemoveRepetition(text = std::wstring(end - length, length)), true;
return false;
}
TextThread::TextThread(ThreadParam tp, HookParam hp, std::optional<std::wstring> name) :
handle(threadCounter++),
name(name.value_or(Util::StringToWideString(hp.name).value())),
tp(tp),
hp(hp)
{}
void TextThread::Start()
{
CreateTimerQueueTimer(&timer, NULL, [](void* This, BOOLEAN) { ((TextThread*)This)->Flush(); }, this, 10, 10, WT_EXECUTELONGFUNCTION);
}
void TextThread::Stop()
{
timer = NULL;
}
void TextThread::AddSentence(std::wstring sentence)
{
queuedSentences->emplace_back(std::move(sentence));
}
void TextThread::Push(BYTE* data, int length)
{
if (length < 0) return;
std::scoped_lock lock(bufferMutex);
BYTE doubleByteChar[2];
if (length == 1) // doublebyte characters must be processed as pairs
if (leadByte) std::tie(doubleByteChar[0], doubleByteChar[1], data, length, leadByte) = std::tuple(leadByte, data[0], doubleByteChar, 2, 0);
else if (IsDBCSLeadByteEx(hp.codepage ? hp.codepage : Host::defaultCodepage, data[0])) std::tie(leadByte, length) = std::tuple(data[0], 0);
if (hp.type & USING_UNICODE) buffer.append((wchar_t*)data, length / sizeof(wchar_t));
else if (auto converted = Util::StringToWideString(std::string((char*)data, length), hp.codepage ? hp.codepage : Host::defaultCodepage)) buffer.append(converted.value());
else Host::AddConsoleOutput(INVALID_CODEPAGE);
if (hp.type & FULL_STRING) buffer.push_back(L'\n');
lastPushTime = GetTickCount();
if (filterRepetition)
{
if (std::all_of(buffer.begin(), buffer.end(), [&](auto ch) { return repeatingChars.find(ch) != repeatingChars.end(); })) buffer.clear();
if (RemoveRepetition(buffer)) // sentence repetition detected, which means the entire sentence has already been received
{
repeatingChars = std::unordered_set(buffer.begin(), buffer.end());
AddSentence(std::move(buffer));
buffer.clear();
}
}
if (flushDelay == 0 && hp.type & FULL_STRING)
{
AddSentence(std::move(buffer));
buffer.clear();
}
}
void TextThread::Flush()
{
if (storage->size() > maxHistorySize) storage->erase(0, maxHistorySize / 2); // https://github.com/Artikash/Textractor/issues/127#issuecomment-486882983
std::deque<std::wstring> sentences;
queuedSentences->swap(sentences);
for (auto& sentence : sentences)
{
sentence.erase(std::remove(sentence.begin(), sentence.end(), L'\0'));
if (Output(*this, sentence)) storage->append(sentence);
}
std::scoped_lock lock(bufferMutex);
if (buffer.empty()) return;
if (buffer.size() > maxBufferSize || GetTickCount() - lastPushTime > flushDelay)
{
AddSentence(std::move(buffer));
buffer.clear();
}
}