@JRubyMethod(name = "readline", module = true, visibility = Visibility.PRIVATE)
public static IRubyObject s_readline(
ThreadContext context, IRubyObject recv, IRubyObject prompt, IRubyObject add_to_hist)
throws IOException {
Ruby runtime = context.getRuntime();
ConsoleHolder holder = getHolder(runtime);
if (holder.readline == null) {
initReadline(runtime, holder); // not overridden, let's go
}
IRubyObject line = runtime.getNil();
String v = null;
while (true) {
try {
holder.readline.getTerminal().disableEcho();
v = holder.readline.readLine(prompt.toString());
break;
} catch (IOException ioe) {
if (RubyIO.restartSystemCall(ioe)) {
// This is for JRUBY-2988, since after a suspend the terminal seems
// to need to be reinitialized. Since we can't easily detect suspension,
// initialize after every readline. Probably not fast, but this is for
// interactive terminals anyway...so who cares?
try {
holder.readline.getTerminal().initializeTerminal();
} catch (Exception e) {
}
continue;
}
throw runtime.newIOErrorFromException(ioe);
} finally {
holder.readline.getTerminal().enableEcho();
}
}
if (null != v) {
if (add_to_hist.isTrue()) {
holder.readline.getHistory().addToHistory(v);
}
/* Explicitly use UTF-8 here. c.f. history.addToHistory using line.asUTF8() */
line = RubyString.newUnicodeString(recv.getRuntime(), v);
}
return line;
}
