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/**
* This file is part of GpgFrontend.
*
* GpgFrontend is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Foobar 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 Foobar. If not, see <https://www.gnu.org/licenses/>.
*
* The initial version of the source code is inherited from gpg4usb-team.
* Their source code version also complies with GNU General Public License.
*
* The source code version of this software was modified and released
* by Saturneric<[email protected]><[email protected]> starting on May 12, 2021.
*
*/
#include "ui/widgets/PlainTextEditorPage.h"
#include <boost/filesystem.hpp>
#include <boost/format.hpp>
#include <utility>
#include "ui/encoding/TextEncodingDetect.h"
#include "ui/thread/FileReadThread.h"
#include "ui_PlainTextEditor.h"
namespace GpgFrontend::UI {
PlainTextEditorPage::PlainTextEditorPage(QString filePath, QWidget* parent)
: QWidget(parent),
ui(std::make_shared<Ui_PlainTextEditor>()),
full_file_path_(std::move(filePath)) {
ui->setupUi(this);
if (full_file_path_.isEmpty()) read_done_ = true;
ui->textPage->setFocus();
ui->loadingLabel->setHidden(true);
// Front in same width
this->setFont({"Courier"});
this->setAttribute(Qt::WA_DeleteOnClose);
this->ui->characterLabel->setText(_("0 character"));
this->ui->lfLabel->setText(_("None"));
this->ui->encodingLabel->setText(_("Binary"));
connect(ui->textPage, &QPlainTextEdit::textChanged, this, [=]() {
if (!read_done_) return;
auto text = ui->textPage->document()->toPlainText();
auto str = boost::format(_("%1% character(s)")) % text.size();
this->ui->characterLabel->setText(str.str().c_str());
detect_encoding(text.toStdString());
});
ui->loadingLabel->setText(_("Loading..."));
}
const QString& PlainTextEditorPage::getFilePath() const {
return full_file_path_;
}
QPlainTextEdit* PlainTextEditorPage::getTextPage() { return ui->textPage; }
void PlainTextEditorPage::setFilePath(const QString& filePath) {
full_file_path_ = filePath;
}
void PlainTextEditorPage::showNotificationWidget(QWidget* widget,
const char* className) {
widget->setProperty(className, true);
ui->verticalLayout->addWidget(widget);
}
void PlainTextEditorPage::closeNoteByClass(const char* className) {
QList<QWidget*> widgets = findChildren<QWidget*>();
for (QWidget* widget : widgets) {
if (widget->property(className) == true) {
widget->close();
}
}
}
void PlainTextEditorPage::slotFormatGpgHeader() {
QString content = ui->textPage->toPlainText();
// Get positions of the gpg-headers, if they exist
int start = content.indexOf(GpgFrontend::GpgConstants::PGP_SIGNED_BEGIN);
int startSig =
content.indexOf(GpgFrontend::GpgConstants::PGP_SIGNATURE_BEGIN);
int endSig = content.indexOf(GpgFrontend::GpgConstants::PGP_SIGNATURE_END);
if (start < 0 || startSig < 0 || endSig < 0 || signMarked) {
return;
}
signMarked = true;
// Set the fontstyle for the header
QTextCharFormat signFormat;
signFormat.setForeground(QBrush(QColor::fromRgb(80, 80, 80)));
signFormat.setFontPointSize(9);
// set font style for the signature
QTextCursor cursor(ui->textPage->document());
cursor.setPosition(startSig, QTextCursor::MoveAnchor);
cursor.movePosition(QTextCursor::Right, QTextCursor::KeepAnchor, endSig);
cursor.setCharFormat(signFormat);
// set the font style for the header
int headEnd = content.indexOf("\n\n", start);
cursor.setPosition(start, QTextCursor::MoveAnchor);
cursor.movePosition(QTextCursor::Right, QTextCursor::KeepAnchor, headEnd);
cursor.setCharFormat(signFormat);
}
void PlainTextEditorPage::ReadFile() {
LOG(INFO) << "called";
read_done_ = false;
read_bytes_ = 0;
ui->textPage->setEnabled(false);
ui->textPage->setReadOnly(true);
ui->textPage->blockSignals(true);
ui->loadingLabel->setHidden(false);
ui->textPage->document()->blockSignals(true);
auto text_page = this->getTextPage();
text_page->setReadOnly(true);
auto thread = new FileReadThread(this->full_file_path_.toStdString());
connect(thread, &FileReadThread::sendReadBlock, this,
&PlainTextEditorPage::slotInsertText);
connect(thread, &FileReadThread::readDone, this, [=]() {
LOG(INFO) << "thread read done";
if (!binary_mode_) {
text_page->setReadOnly(false);
}
});
connect(thread, &FileReadThread::finished, this, [=]() {
LOG(INFO) << "thread finished";
thread->deleteLater();
read_done_ = true;
read_thread_ = nullptr;
ui->textPage->setEnabled(true);
text_page->document()->setModified(false);
ui->textPage->blockSignals(false);
ui->textPage->document()->blockSignals(false);
ui->loadingLabel->setHidden(true);
});
connect(this, &PlainTextEditorPage::destroyed, [=]() {
LOG(INFO) << "request interruption for read thread";
thread->requestInterruption();
read_thread_ = nullptr;
});
this->read_thread_ = thread;
thread->start();
}
std::string binary_to_string(const std::string& source) {
static char syms[] = "0123456789ABCDEF";
std::stringstream ss;
for (unsigned char c : source)
ss << syms[((c >> 4) & 0xf)] << syms[c & 0xf] << " ";
return ss.str();
}
void PlainTextEditorPage::slotInsertText(const std::string& data) {
LOG(INFO) << "data size" << data.size();
read_bytes_ += data.size();
// If binary format is detected, the entire file is converted to binary format
// for display
bool if_last_binary_mode = binary_mode_;
if (!binary_mode_) {
detect_encoding(data);
}
if (binary_mode_) {
if (if_last_binary_mode != binary_mode_) {
auto text_buffer =
ui->textPage->document()->toRawText().toLocal8Bit().toStdString();
ui->textPage->clear();
this->getTextPage()->insertPlainText(
binary_to_string(text_buffer).c_str());
this->ui->lfLabel->setText("None");
}
this->getTextPage()->insertPlainText(binary_to_string(data).c_str());
auto str = boost::format(_("%1% byte(s)")) % read_bytes_;
this->ui->characterLabel->setText(str.str().c_str());
} else {
this->getTextPage()->insertPlainText(data.c_str());
auto text = this->getTextPage()->toPlainText();
auto str = boost::format(_("%1% character(s)")) % text.size();
this->ui->characterLabel->setText(str.str().c_str());
detect_cr_lf(text);
}
}
void PlainTextEditorPage::PrepareToDestroy() {
if (read_thread_) {
read_thread_->requestInterruption();
read_thread_ = nullptr;
}
}
void PlainTextEditorPage::detect_encoding(const std::string& data) {
AutoIt::Common::TextEncodingDetect text_detect;
AutoIt::Common::TextEncodingDetect::Encoding encoding =
text_detect.DetectEncoding((unsigned char*)(data.data()), data.size());
if (encoding == AutoIt::Common::TextEncodingDetect::None) {
binary_mode_ = true;
ui->encodingLabel->setText(_("Binary"));
} else if (encoding == AutoIt::Common::TextEncodingDetect::ASCII) {
ui->encodingLabel->setText(_("ASCII(7 bits)"));
} else if (encoding == AutoIt::Common::TextEncodingDetect::ANSI) {
ui->encodingLabel->setText(_("ASCII(8 bits)"));
} else if (encoding == AutoIt::Common::TextEncodingDetect::UTF8_BOM ||
encoding == AutoIt::Common::TextEncodingDetect::UTF8_NOBOM) {
ui->encodingLabel->setText(_("UTF-8"));
} else if (encoding == AutoIt::Common::TextEncodingDetect::UTF16_LE_BOM ||
encoding == AutoIt::Common::TextEncodingDetect::UTF16_LE_NOBOM) {
ui->encodingLabel->setText(_("UTF-16"));
} else if (encoding == AutoIt::Common::TextEncodingDetect::UTF16_BE_BOM ||
encoding == AutoIt::Common::TextEncodingDetect::UTF16_BE_NOBOM) {
ui->encodingLabel->setText(_("UTF-16(BE)"));
}
}
void PlainTextEditorPage::detect_cr_lf(const QString& data) {
if (binary_mode_) {
this->ui->lfLabel->setText("None");
return;
}
if (data.contains("\r\n")) {
this->ui->lfLabel->setText("CRLF");
} else {
this->ui->lfLabel->setText("LF");
}
}
} // namespace GpgFrontend::UI
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