Added exception handling to run()
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README.md
12
README.md
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NoccyLabs Shell Core
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====================
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This library helps make elegant command line applications that spawn an isolated shell.
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It uses a standalone implementation for buffered input with support for arrow keys to
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navigate the history and more.
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Note that this library requirements a fully ANSI compatible terminal with UTF-8 support
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in order to use colors, control the cursor position etc. As it uses `stty` to configure
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input buffering, it will likely not work on Windows.
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@ -321,57 +321,62 @@ class Shell
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public function run()
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{
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$this->lineReader = new LineRead();
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try {
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$this->lineReader = new LineRead();
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$this->lineReader->setPromptText($this->prompt);
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$this->lineReader->setPromptStyle(new Style(Style::BR_GREEN));
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$this->lineReader->setCommandStyle(new Style(Style::GREEN));
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$this->lineReader->setPromptText($this->prompt);
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$this->lineReader->setPromptStyle(new Style(Style::BR_GREEN));
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$this->lineReader->setCommandStyle(new Style(Style::GREEN));
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$this->running = true;
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$this->running = true;
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$this->dispatchEvent("prompt", [ "context"=>$this->context ]);
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$this->dispatchEvent("prompt", [ "context"=>$this->context ]);
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while ($this->running) {
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// Update the input stuff, sleep if nothing to do.
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if (!($buffer = $this->lineReader->update())) {
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usleep(10000);
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}
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// Escape is handy too...
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if ($buffer == "\e") {
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$this->dispatchEvent("shell.abort");
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continue;
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}
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// we get a ^C on ^C, so deal with the ^C.
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if ($buffer == "\x03") {
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$this->dispatchEvent("shell.stop");
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$this->stop();
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continue;
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}
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// Execute the buffer
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ob_start();
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$this->dispatchEvent("update");
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foreach ($this->timers as $timer) {
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$timer->update();
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}
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if ($buffer) {
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$this->executeBuffer($buffer);
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}
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$output = ob_get_contents();
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ob_end_clean();
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while ($this->running) {
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// Update the input stuff, sleep if nothing to do.
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if (!($buffer = $this->lineReader->update())) {
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usleep(10000);
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}
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// Escape is handy too...
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if ($buffer == "\e") {
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$this->dispatchEvent("shell.abort");
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continue;
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}
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// we get a ^C on ^C, so deal with the ^C.
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if ($buffer == "\x03") {
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$this->dispatchEvent("shell.stop");
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$this->stop();
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continue;
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}
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// Execute the buffer
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ob_start();
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$this->dispatchEvent("update");
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foreach ($this->timers as $timer) {
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$timer->update();
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}
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if ($buffer) {
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$this->executeBuffer($buffer);
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}
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$output = ob_get_contents();
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ob_end_clean();
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if (trim($output)) {
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$this->lineReader->erase();
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echo rtrim($output)."\n";
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$this->lineReader->redraw();
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if (trim($output)) {
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$this->lineReader->erase();
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echo rtrim($output)."\n";
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$this->lineReader->redraw();
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}
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if (!$this->context) {
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$this->stop();
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}
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if ($buffer) {
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$this->dispatchEvent("prompt", [ "context"=>$this->context ]);
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}
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}
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if (!$this->context) {
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$this->stop();
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}
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if ($buffer) {
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$this->dispatchEvent("prompt", [ "context"=>$this->context ]);
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}
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} catch (\Exception $e) {
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fprintf(STDERR, "\e[31;1mFatal: Unhandled exception\e[0m\n\n%s\n", $e);
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}
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$this->lineReader = null;
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