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/*
SPDX-FileCopyrightText: 2016 Volker Krause <vkrause@kde.org>
SPDX-FileCopyrightText: 2018 Christoph Cullmann <cullmann@kde.org>
SPDX-License-Identifier: MIT
*/
#include "htmlhighlighter.h"
#include "definition.h"
#include "format.h"
#include "ksyntaxhighlighting_logging.h"
#include "state.h"
#include "theme.h"
#include <QFile>
#include <QFileInfo>
#include <QTextStream>
#include <QVarLengthArray>
using namespace KSyntaxHighlighting;
class KSyntaxHighlighting::HtmlHighlighterPrivate
{
public:
std::unique_ptr<QTextStream> out;
std::unique_ptr<QFile> file;
QString currentLine;
};
HtmlHighlighter::HtmlHighlighter()
: d(new HtmlHighlighterPrivate())
{
}
HtmlHighlighter::~HtmlHighlighter()
{
}
void HtmlHighlighter::setOutputFile(const QString &fileName)
{
d->file.reset(new QFile(fileName));
if (!d->file->open(QFile::WriteOnly | QFile::Truncate)) {
qCWarning(Log) << "Failed to open output file" << fileName << ":" << d->file->errorString();
return;
}
d->out.reset(new QTextStream(d->file.get()));
d->out->setCodec("UTF-8");
}
void HtmlHighlighter::setOutputFile(FILE *fileHandle)
{
d->out.reset(new QTextStream(fileHandle, QIODevice::WriteOnly));
d->out->setCodec("UTF-8");
}
void HtmlHighlighter::highlightFile(const QString &fileName, const QString &title)
{
QFileInfo fi(fileName);
QFile f(fileName);
if (!f.open(QFile::ReadOnly)) {
qCWarning(Log) << "Failed to open input file" << fileName << ":" << f.errorString();
return;
}
if (title.isEmpty())
highlightData(&f, fi.fileName());
else
highlightData(&f, title);
}
void HtmlHighlighter::highlightData(QIODevice *dev, const QString &title)
{
if (!d->out) {
qCWarning(Log) << "No output stream defined!";
return;
}
QString htmlTitle;
if (title.isEmpty())
htmlTitle = QStringLiteral("Kate Syntax Highlighter");
else
htmlTitle = title.toHtmlEscaped();
State state;
*d->out << "<!DOCTYPE html>\n";
*d->out << "<html><head>\n";
*d->out << "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"/>\n";
*d->out << "<title>" << htmlTitle << "</title>\n";
*d->out << "<meta name=\"generator\" content=\"KF5::SyntaxHighlighting - Definition (" << definition().name() << ") - Theme (" << theme().name() << ")\"/>\n";
*d->out << "</head><body";
*d->out << " style=\"background-color:" << QColor(theme().editorColor(Theme::BackgroundColor)).name();
if (theme().textColor(Theme::Normal))
*d->out << ";color:" << QColor(theme().textColor(Theme::Normal)).name();
*d->out << "\"><pre>\n";
QTextStream in(dev);
in.setCodec("UTF-8");
while (!in.atEnd()) {
d->currentLine = in.readLine();
state = highlightLine(d->currentLine, state);
*d->out << "\n";
}
*d->out << "</pre></body></html>\n";
d->out->flush();
d->out.reset();
d->file.reset();
}
void HtmlHighlighter::applyFormat(int offset, int length, const Format &format)
{
if (length == 0)
return;
// collect potential output, cheaper than thinking about "is there any?"
QVarLengthArray<QString, 16> formatOutput;
if (format.hasTextColor(theme()))
formatOutput << QStringLiteral("color:") << format.textColor(theme()).name() << QStringLiteral(";");
if (format.hasBackgroundColor(theme()))
formatOutput << QStringLiteral("background-color:") << format.backgroundColor(theme()).name() << QStringLiteral(";");
if (format.isBold(theme()))
formatOutput << QStringLiteral("font-weight:bold;");
if (format.isItalic(theme()))
formatOutput << QStringLiteral("font-style:italic;");
if (format.isUnderline(theme()))
formatOutput << QStringLiteral("text-decoration:underline;");
if (format.isStrikeThrough(theme()))
formatOutput << QStringLiteral("text-decoration:line-through;");
if (!formatOutput.isEmpty()) {
*d->out << "<span style=\"";
for (const auto &out : qAsConst(formatOutput)) {
*d->out << out;
}
*d->out << "\">";
}
*d->out << d->currentLine.mid(offset, length).toHtmlEscaped();
if (!formatOutput.isEmpty()) {
*d->out << "</span>";
}
}
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