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Fix panic with vi in busybox

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Following bugs are fixed:
1.Handle out of bound cursor movements: vi in busybox sets cursor
to (999,999) expecting it to be set to right, bottom correctly.

2.Correctly determine redirected non-terminal file.

Signed-off-by: Sachin Joshi <sachin_jayant_joshi@hotmail.com>
This commit is contained in:
Sachin Joshi 2015-03-18 13:10:57 -07:00
parent 27c2a55648
commit 7fc3c0ba26
1 changed files with 14 additions and 0 deletions
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14
term/winconsole/console_windows.go
View file

@ -265,6 +265,10 @@ func StdStreams() (stdOut io.Writer, stdErr io.Writer, stdIn io.ReadCloser) {
func GetHandleInfo(in interface{}) (uintptr, bool) {
var inFd uintptr
var isTerminalIn bool
if file, ok := in.(*os.File); ok {
inFd = file.Fd()
isTerminalIn = IsTerminal(inFd)
}
if tr, ok := in.(*terminalReader); ok {
if file, ok := tr.wrappedReader.(*os.File); ok {
inFd = file.Fd()
@ -678,14 +682,24 @@ func (term *WindowsTerminal) HandleOutputCommand(fd uintptr, command []byte) (n
// [line;columnf
// Moves the cursor to the specified position (coordinates).
// If you do not specify a position, the cursor moves to the home position at the upper-left corner of the screen (line 0, column 0).
screenBufferInfo, err := GetConsoleScreenBufferInfo(uintptr(handle))
if err != nil {
return len(command), err
}
line, err := parseInt16OrDefault(parsedCommand.getParam(0), 1)
if err != nil {
return len(command), err
}
if line > int16(screenBufferInfo.Window.Bottom) {
line = int16(screenBufferInfo.Window.Bottom)
}
column, err := parseInt16OrDefault(parsedCommand.getParam(1), 1)
if err != nil {
return len(command), err
}
if column > int16(screenBufferInfo.Window.Right) {
column = int16(screenBufferInfo.Window.Right)
}
// The numbers are not 0 based, but 1 based
r, err = setConsoleCursorPosition(uintptr(handle), false, int16(column-1), int16(line-1))
if !r {