96 lines
2.9 KiB
C++
96 lines
2.9 KiB
C++
#include "pythontab.h"
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#include <QGridLayout>
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#include "emb.h"
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#include "pybindings.h"
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PythonTab::PythonTab(QWidget *parent) : QWidget(parent)
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{
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PyImport_ImportModule("emb");
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// Add text area for Python output and input line
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plainTextEdit = new QPlainTextEdit();
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plainTextEdit->setReadOnly(true);
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plainTextEdit->setMinimumHeight(100);
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QFont f("unexistent");
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f.setStyleHint(QFont::Monospace);
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plainTextEdit->setFont(f);
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lineEdit = new QLineEdit();
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lineEdit->setMinimumHeight(30);
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lineEdit->setMaximumHeight(30);
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lineEdit->setFont(f);
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QGridLayout *mainLayout = new QGridLayout();
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mainLayout->addWidget(plainTextEdit, 0, 0);
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mainLayout->addWidget(lineEdit, 1, 0);
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setLayout(mainLayout);
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connect(lineEdit, SIGNAL(returnPressed()), this,
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SLOT(editLineReturnPressed()));
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write = [this](std::string s) {
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plainTextEdit->moveCursor(QTextCursor::End);
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plainTextEdit->insertPlainText(s.c_str());
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plainTextEdit->moveCursor(QTextCursor::End);
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};
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emb::set_stdout(write);
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}
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void handle_system_exit() { exit(-1); }
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int PythonTab::executePython(std::string command)
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{
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PyObject *m, *d, *v;
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m = PyImport_AddModule("__main__");
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if (m == NULL)
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return -1;
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d = PyModule_GetDict(m);
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v = PyRun_StringFlags(command.c_str(),
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(command.empty() ? Py_file_input : Py_single_input),
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d, d, NULL);
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if (v == NULL) {
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PyObject *exception, *v, *tb;
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if (PyErr_ExceptionMatches(PyExc_SystemExit)) {
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handle_system_exit();
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}
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PyErr_Fetch(&exception, &v, &tb);
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if (exception == NULL)
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return 0;
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PyErr_NormalizeException(&exception, &v, &tb);
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if (tb == NULL) {
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tb = Py_None;
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Py_INCREF(tb);
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}
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PyException_SetTraceback(v, tb);
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if (exception == NULL)
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return 0;
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PyErr_Clear();
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PyObject *objectsRepresentation = PyObject_Str(v);
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std::string errorStr =
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PyUnicode_AsUTF8(objectsRepresentation) + std::string("\n");
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plainTextEdit->moveCursor(QTextCursor::End);
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plainTextEdit->insertPlainText(errorStr.c_str());
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plainTextEdit->moveCursor(QTextCursor::End);
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Py_DECREF(objectsRepresentation);
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Py_XDECREF(exception);
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Py_XDECREF(v);
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Py_XDECREF(tb);
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return -1;
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}
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Py_DECREF(v);
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return 0;
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}
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void PythonTab::editLineReturnPressed()
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{
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std::string input = lineEdit->text().toStdString();
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plainTextEdit->moveCursor(QTextCursor::End);
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plainTextEdit->insertPlainText(std::string(">>> " + input + "\n").c_str());
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plainTextEdit->moveCursor(QTextCursor::End);
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plainTextEdit->update();
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lineEdit->clear();
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int error = executePython(input);
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}
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