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Minor cleanup: When asynchronous output comes along, 

back up over and delete the prompt before writing out the
asynchronous output, rather than just going to a new line.

llvm-svn: 130843
This commit is contained in:
Caroline Tice 2011-05-04 16:44:57 +00:00
parent c981f6299e
commit fe1bdf291f
1 changed files with 5 additions and 2 deletions
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7
lldb/tools/driver/IOChannel.cpp
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@ -29,6 +29,9 @@ typedef std::map<EditLine *, std::string> PromptMap;
const char *g_default_prompt = "(lldb) ";
PromptMap g_prompt_map;
// Printing the following string causes libedit to back up to the beginning of the line & blank it out.
const char undo_prompt_string[4] = { (char) 13, (char) 27, (char) 91, (char) 75};
static const char*
el_prompt(EditLine *el)
{
@ -496,7 +499,7 @@ IOChannel::OutWrite (const char *buffer, size_t len, bool asynchronous)
// Use the mutex to make sure OutWrite and ErrWrite do not interfere with each other's output.
IOLocker locker (m_output_mutex);
if (asynchronous)
::fwrite ("\n", 1, 1, m_out_file);
::fwrite (undo_prompt_string, 1, 4, m_out_file);
::fwrite (buffer, 1, len, m_out_file);
if (asynchronous)
m_driver->GetDebugger().NotifyTopInputReader (eInputReaderAsynchronousOutputWritten);
@ -511,7 +514,7 @@ IOChannel::ErrWrite (const char *buffer, size_t len, bool asynchronous)
// Use the mutex to make sure OutWrite and ErrWrite do not interfere with each other's output.
IOLocker locker (m_output_mutex);
if (asynchronous)
::fwrite ("\n", 1, 1, m_err_file);
::fwrite (undo_prompt_string, 1, 4, m_err_file);
::fwrite (buffer, 1, len, m_err_file);
if (asynchronous)
m_driver->GetDebugger().NotifyTopInputReader (eInputReaderAsynchronousOutputWritten);