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/* smplayer, GUI front-end for mplayer.
Copyright (C) 2006-2018 Ricardo Villalba <rvm@users.sourceforge.net>
This program 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 2 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "subreader.h"
#include <QFile>
#include <QRegExp>
#include <QTextCodec>
#include <QFileInfo>
#include <QDir>
#include <QDebug>
#define NL QString("\r\n")
#define BOM QString(0xFEFF)
SubReader::SubReader() {
input_codec = "ISO-8859-1";
vtt_line_position = -1;
overwrite_vtt = false;
has_bom = false;
}
SubReader::~SubReader() {
}
void SubReader::parseSRT(const QString & filename) {
entries.clear();
QRegExp rx_number("^(\\d+)$");
QRegExp rx_time("^(.* --> .*)$");
bool first_line = true;
has_bom = false;
QFile file(filename);
if (file.open(QIODevice::ReadOnly)) {
while (!file.atEnd()) {
QByteArray line = file.readLine().trimmed();
if (first_line) {
first_line = false;
if (line.count() > 2 && line.left(3) == QByteArray("\xEF\xBB\xBF")) {
qDebug("SubReader::parseSRT: found BOM");
has_bom = true;
}
}
//qDebug() << "line:" << line;
if (rx_number.indexIn(line) != -1) {
// Ignore
}
else
if (rx_time.indexIn(line) != -1) {
QString time = rx_time.cap(1);
//qDebug() << "time:" << time;
// Read text
QByteArray text;
QByteArray line2;
do {
line2 = file.readLine().trimmed();
//qDebug() << "line2:" << line2;
if (!text.isEmpty() && !line2.isEmpty()) text += NL;
if (!line2.isEmpty()) text += line2;
} while (!file.atEnd() && !line2.isEmpty());
//qDebug() << "text:" << text;
Subtitle sub(time, text);
entries << sub;
}
}
}
}
void SubReader::dump() {
for (int n = 0; n < entries.count(); n++) {
qDebug() << "sub:" << n;
qDebug() << "time:" << entries[n].time;
qDebug() << "text:" << entries[n].text;
}
}
QString SubReader::convertToVTT() {
QByteArray codec_name = input_codec;
if (has_bom) codec_name = "UTF-8";
QTextCodec *codec = QTextCodec::codecForName(codec_name);
qDebug() << "SubReader::convertToVTT: codec_name:" << codec_name;
QRegExp rx(filter, Qt::CaseInsensitive);
QString res = BOM + "WEBVTT" + NL + NL;
int filtered_lines = 0;
for (int n = 0; n < entries.count(); n++) {
QString time = entries[n].time;
time.replace(",", ".");
QString text = codec->toUnicode(entries[n].text).trimmed();
if (!text.isEmpty()) {
if (!filter.isEmpty() && rx.indexIn(text) != -1) {
//qDebug() << "SubReader::convertToVTT: filtered:" << text;
filtered_lines++;
res += "NOTE " + time + NL + "NOTE " + text.replace("\r\n", "\r\nNOTE ") + NL + NL;
} else {
res += time;
if (vtt_line_position > -1) res += " line:" + QString::number(vtt_line_position) + "%";
res += NL;
res += text + NL + NL;
}
}
}
if (filtered_lines != 0) {
qDebug() << "SubReader::convertToVTT: filtered lines:" << filtered_lines;
}
return res;
}
#ifdef SRT_OUTPUT
QByteArray SubReader::convertToSRT() {
QByteArray res;
QRegExp rx(filter, Qt::CaseInsensitive);
for (int n = 0; n < entries.count(); n++) {
res += QString::number(n+1) + NL;
res += entries[n].time + NL;
if (!filter.isEmpty() && rx.indexIn(QString::fromLatin1(entries[n].text)) != -1) {
qDebug() << "SubReader::convertToSRT: filtered:" << entries[n].text;
res += " " + NL + NL;
} else {
res += entries[n].text + NL + NL;
}
}
return res;
}
#endif
bool SubReader::saveFile(const QString & filename, const QByteArray & content) {
QFile file(filename);
if (!file.open(QIODevice::WriteOnly)) {
qDebug() << "SubReader::saveFile: can't open" << filename << "for writing";
return false;
}
file.write(content);
file.close();
return true;
}
bool SubReader::saveFile(const QString & filename, const QString & content) {
return saveFile(filename, content.toUtf8());
}
bool SubReader::autoConvertToVTT(const QString & filename) {
QFileInfo fi(filename);
if (!fi.exists()) {
qDebug() << "SubReader::autoConvertToVTT: error: file" << filename << "doesn't exist";
return false;
}
QString path = fi.absolutePath();
QString basename = fi.completeBaseName();
QString extension = fi.suffix();
qDebug() << "SubReader::autoConvertToVTT: path:" << path << "basename:" << basename << "extension:" << extension;
if (extension.toLower() != "srt") {
qDebug() << "SubReader::autoConvertToVTT: input filename isn't a srt file. Exiting";
return false;
}
QString output_basename = basename + ".vtt";
QString output_filename = path + QDir::separator() + output_basename;
qDebug() << "SubReader::autoConvertToVTT: output:" << output_filename;
if (QFile::exists(output_filename)) {
if (!overwrite_vtt) {
qDebug() << "SubReader::autoConvertToVTT: file" << output_filename << "already exists. Skipping.";
return true;
} else {
qDebug() << "SubReader::autoConvertToVTT: overwriting " << output_filename;
}
}
parseSRT(filename);
QString content = convertToVTT();
return saveFile(output_filename, content);
}
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