status_t
CommandLineUserInterface::_InputLoop()
{
thread_id currentThread = -1;
while (!fTerminating) {
// Wait for a thread or Ctrl-C.
fContext.WaitForThreadOrUser();
if (fContext.IsTerminating())
break;
// Print the active thread, if it changed.
if (fContext.CurrentThreadID() != currentThread) {
fContext.PrintCurrentThread();
currentThread = fContext.CurrentThreadID();
}
// read a command line
const char* line = fContext.PromptUser(kDebuggerPrompt);
if (line == NULL)
break;
// parse the command line
ArgumentVector args;
const char* parseErrorLocation;
switch (args.Parse(line, &parseErrorLocation)) {
case ArgumentVector::NO_ERROR:
break;
case ArgumentVector::NO_MEMORY:
printf("Insufficient memory parsing the command line.\n");
continue;
case ArgumentVector::UNTERMINATED_QUOTED_STRING:
printf("Parse error: Unterminated quoted string starting at "
"character %zu.\n", parseErrorLocation - line + 1);
continue;
case ArgumentVector::TRAILING_BACKSPACE:
printf("Parse error: trailing backspace.\n");
continue;
}
if (args.ArgumentCount() == 0)
continue;
// add line to history
fContext.AddLineToInputHistory(line);
// execute command
_ExecuteCommand(args.ArgumentCount(), args.Arguments());
}
return B_OK;
}
void
CommandLineUserInterface::Run()
{
// Wait for the Show() semaphore to be released.
status_t error;
do {
error = acquire_sem(fShowSemaphore);
} while (error == B_INTERRUPTED);
if (error != B_OK)
return;
if (!fSaveReport) {
_InputLoop();
// Release the Show() semaphore to signal Terminate().
release_sem(fShowSemaphore);
} else {
ArgumentVector args;
char buffer[256];
const char* parseErrorLocation;
if (_ReportTargetThreadStopNeeded()) {
snprintf(buffer, sizeof(buffer), "stop %" B_PRId32,
fReportTargetThread);
args.Parse(buffer, &parseErrorLocation);
_ExecuteCommand(args.ArgumentCount(), args.Arguments());
} else
_SubmitSaveReport();
}
}
void
CommandLineUserInterface::_SubmitSaveReport()
{
ArgumentVector args;
char buffer[256];
const char* parseErrorLocation;
snprintf(buffer, sizeof(buffer), "save-report %s",
fReportPath != NULL ? fReportPath : "");
args.Parse(buffer, &parseErrorLocation);
_ExecuteCommand(args.ArgumentCount(), args.Arguments());
}
status_t
CommandLineUserInterface::_InputLoop()
{
while (!fTerminating) {
// read a command line
printf("debugger> ");
fflush(stdout);
char buffer[256];
if (fgets(buffer, sizeof(buffer), stdin) == NULL)
break;
// parse the command line
ArgumentVector args;
const char* parseErrorLocation;
switch (args.Parse(buffer, &parseErrorLocation)) {
case ArgumentVector::NO_ERROR:
break;
case ArgumentVector::NO_MEMORY:
printf("Insufficient memory parsing the command line.\n");
continue;
case ArgumentVector::UNTERMINATED_QUOTED_STRING:
printf("Parse error: Unterminated quoted string starting at "
"character %zu.\n", parseErrorLocation - buffer + 1);
continue;
case ArgumentVector::TRAILING_BACKSPACE:
printf("Parse error: trailing backspace.\n");
continue;
}
if (args.ArgumentCount() == 0)
continue;
_ExecuteCommand(args.ArgumentCount(), args.Arguments());
}
return B_OK;
}