113 lines
No EOL
3.1 KiB
C++
113 lines
No EOL
3.1 KiB
C++
#include "commandedit.h"
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#include "common.h"
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#include "logger.h"
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#include "lua.h"
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#include "objects/service/script/scriptcontext.h"
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#include "luaapis.h" // IWYU pragma: keep
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#include <qevent.h>
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#include <qlineedit.h>
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#include <qnamespace.h>
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int script_errhandler(lua_State*);
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CommandEdit::CommandEdit(QWidget* parent) : QLineEdit(parent) {
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connect(this, &QLineEdit::returnPressed, this, &CommandEdit::executeCommand);
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}
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CommandEdit::~CommandEdit() = default;
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void CommandEdit::executeCommand() {
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std::string command = this->text().toStdString();
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// Output
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Logger::infof("> %s", command.c_str());
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// Execute via Lua
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auto context = gDataModel->GetService<ScriptContext>();
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lua_State* L = context->state;
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int top = lua_gettop(L);
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lua_State* Lt = lua_newthread(L);
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lua_pushthread(Lt); // Push thread
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getOrCreateEnvironment(Lt);
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lua_setfenv(Lt, -2); // Set env of current thread
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lua_pop(Lt, 1); // Pop thread
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// Push wrapper as thread function
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lua_getfield(Lt, LUA_REGISTRYINDEX, "LuaPCallWrapper");
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// Load source code and push onto thread as upvalue for wrapper
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int status = luaL_loadstring(Lt, command.c_str());
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if (status != LUA_OK) {
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// Failed to parse/load chunk
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Logger::error(lua_tostring(Lt, -1));
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lua_settop(L, top);
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return;
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}
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// Push our error handler and then generate the wrapped function
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lua_pushcfunction(Lt, script_errhandler);
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lua_call(Lt, 2, 1);
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// Resume the thread
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lua_resume(Lt, 0);
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lua_pop(L, 1); // Pop the thread
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lua_settop(L, top);
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// Push to history
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if (commandHistory.size() == 0 || commandHistory.back() != command) {
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historyIndex = commandHistory.size();
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commandHistory.push_back(command);
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}
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};
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// Gets the command bar environment from the registry, or creates a new one and registers it
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void CommandEdit::getOrCreateEnvironment(lua_State* L) {
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auto context = gDataModel->GetService<ScriptContext>();
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// Try to find existing environment
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lua_getfield(L, LUA_REGISTRYINDEX, "commandBarEnv");
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if (!lua_isnil(L, -1))
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return; // Return the found environment
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lua_pop(L, 1); // Pop nil
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// Initialize script globals
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context->NewEnvironment(L); // Pushes envtable, metatable
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// Set source in metatable
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lua_pushstring(L, "commandbar");
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lua_setfield(L, -2, "source");
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lua_pop(L, 1); // Pop metatable
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// Register it
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lua_pushvalue(L, -1); // Copy
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lua_setfield(L, LUA_REGISTRYINDEX, "commandBarEnv");
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// Remainder on stack:
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// 1. Env table
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}
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void CommandEdit::keyPressEvent(QKeyEvent* evt) {
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switch (evt->key()) {
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case Qt::Key_Up:
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if (historyIndex > 0)
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historyIndex--;
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if (commandHistory.size() > 0)
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this->setText(QString::fromStdString(commandHistory[historyIndex]));
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return;
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case Qt::Key_Down:
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if (historyIndex+1 < (int)commandHistory.size())
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historyIndex++;
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if (commandHistory.size() > 0)
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this->setText(QString::fromStdString(commandHistory[historyIndex]));
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return;
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}
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return QLineEdit::keyPressEvent(evt);
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} |