Added torrent support

The BEncode parser is loosely based on this:
https://github.com/jif/Bencode/blob/master/bencode.cpp

Not perfect, but enough to display all the essential data in the shiny
new TorrentDisplay dialog.

1 files changed, 149 insertions, 0 deletions

diff --git a/torrentdisplay.cpp b/torrentdisplay.cpp
new file mode 100644
index 0000000..e56343c
--- /dev/null
+++ b/torrentdisplay.cpp
@@ -0,0 +1,149 @@
+#include <QGridLayout>
+#include <QHBoxLayout>
+#include <QVBoxLayout>
+#include <QGroupBox>
+#include <QLineEdit>
+#include <QStandardItemModel>
+#include <QTreeView>
+#include <QStandardItem>
+#include <QPushButton>
+#include <QLabel>
+#include <QDateTime>
+
+#include "torrentdisplay.h"
+
+TorrentDisplay::TorrentDisplay(QWidget *parent, Qt::WindowFlags f) : QDialog(parent, f) {
+    //windows doesn't like it after setting up the GUI
+    setMinimumWidth(600);
+
+    //general info
+    QGridLayout *torGenLayout = new QGridLayout;
+    QLabel *l1 = new QLabel(tr("Created"));
+    mCreated = new QLineEdit;
+    mCreated->setReadOnly(true);
+    QLabel *l2 = new QLabel(tr("Created by"));
+    mCreatedBy = new QLineEdit;
+    mCreatedBy->setReadOnly(true);
+    QLabel *l3 = new QLabel(tr("Encoding"));
+    mEncoding = new QLineEdit;
+    mEncoding->setReadOnly(true);
+    QLabel *l4 = new QLabel(tr("Piece length"));
+    mPieceLength = new QLineEdit;
+    mPieceLength->setReadOnly(true);
+    torGenLayout->addWidget(l1, 0, 0);
+    torGenLayout->addWidget(mCreated, 0, 1);
+    torGenLayout->addWidget(l2, 1, 0);
+    torGenLayout->addWidget(mCreatedBy, 1, 1);
+    torGenLayout->addWidget(l3, 2, 0);
+    torGenLayout->addWidget(mEncoding, 2, 1);
+    torGenLayout->addWidget(l4, 3, 0);
+    torGenLayout->addWidget(mPieceLength, 3, 1);
+    QGroupBox *torGenGroup = new QGroupBox(tr("General"));
+    torGenGroup->setLayout(torGenLayout);
+
+    //files
+    mFileModel = new QStandardItemModel;
+    mFileView = new QTreeView;
+    mFileView->setSortingEnabled(true);
+    mFileView->setModel(mFileModel);
+    QHBoxLayout *fileLayout = new QHBoxLayout;
+    fileLayout->addWidget(mFileView);
+    QGroupBox *fileGroup = new QGroupBox(tr("Files"));
+    fileGroup->setLayout(fileLayout);
+
+    //announce list
+    mAnnounceModel = new QStandardItemModel;
+    mAnnounceView = new QTreeView;
+    mAnnounceView->setSortingEnabled(true);
+    mAnnounceView->setModel(mAnnounceModel);
+    QHBoxLayout *announceLayout = new QHBoxLayout;
+    announceLayout->addWidget(mAnnounceView);
+    QGroupBox *announceGroup = new QGroupBox(tr("Announce"));
+    announceGroup->setLayout(announceLayout);
+
+    //close button
+    QHBoxLayout *buttonLayout = new QHBoxLayout;
+    QPushButton *closeBtn = new QPushButton(tr("Close"));
+    buttonLayout->addStretch();
+    buttonLayout->addWidget(closeBtn);
+    buttonLayout->addStretch();
+    connect(closeBtn, SIGNAL(clicked()), this, SLOT(hide()));
+
+    //dialog layout
+    QVBoxLayout *mainLayout = new QVBoxLayout;
+    mainLayout->addWidget(torGenGroup);
+    mainLayout->addWidget(fileGroup);
+    mainLayout->addWidget(announceGroup);
+    mainLayout->addLayout(buttonLayout);
+    setLayout(mainLayout);
+    setWindowTitle(tr("Torrent Info"));
+}
+
+void TorrentDisplay::setData(const QList<QVariant> data) {
+    if(data.isEmpty()){
+        return;
+    }
+    mFileModel->clear();
+    mFileModel->setHorizontalHeaderLabels(QStringList() << tr("Name") << tr("Length"));
+    mAnnounceModel->clear();
+    mAnnounceModel->setHorizontalHeaderLabels(QStringList() << tr("Tracker"));
+
+    foreach(QVariant cur, data){
+        if(cur.canConvert<QVariantHash>()){
+            QVariantHash h = cur.toHash();
+            QHash<QString, QVariant>::const_iterator it = h.constBegin();
+            while(it != h.constEnd()){
+                if(it.key() == "info"){
+                    QVariantHash infoD = it.value().toHash();
+                    int piece_length = infoD.value("piece length").toInt();
+                    mPieceLength->setText(QString::number(piece_length));
+                    if(infoD.contains("name")){
+                        QString fn = infoD.value("name").toString();
+                        qint64 length = infoD.value("length").toLongLong();
+                        QStandardItem *i1 = new QStandardItem(fn);
+                        QStandardItem *i2 = new QStandardItem(QString::number(length));
+                        i2->setData(length);
+                        mFileModel->invisibleRootItem()->appendRow(QList<QStandardItem*>() << i1 << i2);
+                    }
+                    if(infoD.contains("files")){
+                        QVariantList fList = infoD.value("files").toList();
+                        foreach(QVariant fn, fList){
+                            QVariantHash curH = fn.toHash();
+                            QVariantList path = curH.value("path").toList();
+                            QStandardItem *i1 = new QStandardItem(path.last().toString());
+                            qint64 length = curH.value("length").toLongLong();
+                            QStandardItem *i2 = new QStandardItem(QString::number(length));
+                            i2->setData(length);
+                            mFileModel->invisibleRootItem()->appendRow(QList<QStandardItem*>() << i1 << i2);
+                        }
+                    }
+                    mFileView->resizeColumnToContents(0);
+                    mFileView->resizeColumnToContents(1);
+                }
+                if(it.key() == "creation date"){
+                    qint64 secs = it.value().toLongLong();
+                    QDateTime when = QDateTime::fromTime_t(secs);
+                    mCreated->setText(when.toString(Qt::RFC2822Date));
+                }
+                if(it.key() == "encoding"){
+                    mEncoding->setText(it.value().toString());
+                }
+                if(it.key() == "created by"){
+                    mCreatedBy->setText(it.value().toString());
+                }
+                //this is a list of lists
+                if(it.key() == "announce-list"){
+                    QVariantList l1 = it.value().toList();
+                    foreach(QVariant l2, l1){
+                        QVariantList l3 = l2.toList();
+                        foreach(QVariant ann, l3){
+                            QStandardItem *i1 = new QStandardItem(ann.toString());
+                            mAnnounceModel->invisibleRootItem()->appendRow(QList<QStandardItem*>() << i1);
+                        }
+                    }
+                }
+                ++it;
+            }
+        }
+    }
+}