/// <summary>
/// Handle Tab key, by autocompleting the command
/// </summary>
void HandleTab()
{
string searchWord;
if (buffer.ToString().Contains(' '))
{
searchWord = buffer.ToString().Split(' ').Last();
}
else
{
searchWord = buffer.ToString();
}
// Send the word string to Auto tab handler
string[] results = TabHelper.GetTabOptions(searchWord.ToLower());
if (results == null || results.Length == 0)
{
return;
}
int count = results.Length;
bool flagDone = false;
// if there is just one matching string, print it to string.
if (results.Length == 1)
{
WriteText(results[0]);
}
else
{
int countDisplayedOptions = -1;
int p = 0;
// find the first character that differs from user entered string
for (p = 0; p < results[0].Length; p++)
{
char c = results[0][p];
for (int i = 1; i < count; i++)
{
if (results[i].Length < p)
{
DisplayTabOptions(countDisplayedOptions, results, searchWord);
flagDone = true;
break;
}
if (results[i][p] != c)
{
DisplayTabOptions(countDisplayedOptions, results, searchWord);
flagDone = true;
break;
}
}
if (!flagDone)
{
countDisplayedOptions = p;
}
else
{
break;
}
}
// Handle the case when the command string is a subset of another existing command string
// Eg. setbladepowerlimit is a subset of setbladepowerlimiton/off
if (!flagDone)
{
countDisplayedOptions = p - 1;
DisplayTabOptions(countDisplayedOptions, results, searchWord);
}
}
}
/// <summary>
/// Handle tab auto completion
/// </summary>
private static void HandleTab()
{
// Get the word last entered in buffer separated by a space.
string text = Encoding.UTF8.GetString(_userCommandInput.ToArray(), 0, _userCommandInput.Count);
string prefix = null;
if (text.ToString().Contains(' '))
{
prefix = text.ToString().Split(' ').Last();
}
else
{
prefix = text.ToString();
}
// Send the word string to Auto tab handler
string[] completions = TabHelper.GetTabOptions(prefix.ToLower());
if (completions == null)
{
return;
}
int ncompletions = completions.Length;
if (ncompletions == 0)
{
return;
}
// if there is just one matching string, print it to string.
if (completions.Length == 1)
{
InsertTextAtCursor(completions[0]);
AddToBuffer(completions[0]);
}
else
{
int last = -1;
// find the first character that differs from user entered string
for (int p = 0; p < completions[0].Length; p++)
{
char c = completions[0][p];
for (int i = 1; i < ncompletions; i++)
{
if (completions[i].Length < p)
{
goto mismatch;
}
if (completions[i][p] != c)
{
goto mismatch;
}
}
last = p;
}
mismatch:
// if first time and there is string that matches, add to screen
// example: User entered wcscli -getc followed by tab
// we can complete it by wcscli -getchassis and also provide other
// options: -getchassisinfo -getchassishealth -getchassisattentionledstatus -getchassismanagerstatus -getchassismanagerassetinfo
// following code handles above scenario
if (last != -1)
{
InsertTextAtCursor(completions[0].Substring(0, last + 1));
AddToBuffer(completions[0].Substring(0, last + 1));
}
// Insert New line
EchoBytesToSerial(0x0A);
for (int i = 0; i < _userCommandInput.Count + (WcsCliConstants.consoleString.Length + 1); i++)
{
EchoBytesToSerial(0x1b);
EchoBytesToSerial(0x5b);
EchoBytesToSerial(0x44);
}
int count = 0;
// Print all options to screen
foreach (string s in completions)
{
InsertTextAtCursor(prefix);
count = count + prefix.Length;
InsertTextAtCursor(s);
count = count + s.Length;
InsertTextAtCursor(new string(' ', 1));
count = count + 1;
}
// Calculate cursor position
int charToRemove = count % window_width;
// Insert New line
EchoBytesToSerial(0x0A);
// Move cursor left
for (int i = 0; i < charToRemove; i++)
{
EchoBytesToSerial(0x1b);
EchoBytesToSerial(0x5b);
EchoBytesToSerial(0x44);
}
// print WCSCLI prompt
InsertTextAtCursor(WcsCliConstants.consoleString + " " + "");
InsertTextAtCursor(Encoding.UTF8.GetString(_userCommandInput.ToArray(), 0, _userCommandInput.Count));
}
}