public static PhpResource OpenPipe(string command, string mode)
{
if (String.IsNullOrEmpty(mode))
{
PhpException.Throw(PhpError.Warning, CoreResources.GetString("invalid_file_mode", mode));
return null;
}
bool read = mode[0] == 'r';
bool write = mode[0] == 'w' || mode[0] == 'a' || mode[0] == 'x';
if (!read && !write)
{
PhpException.Throw(PhpError.Warning, CoreResources.GetString("invalid_file_mode", mode));
return null;
}
Process process = CreateProcessExecutingCommand(ref command, false);
if (process == null) return null;
process.StartInfo.RedirectStandardOutput = read;
process.StartInfo.RedirectStandardInput = write;
if (!StartProcess(process, true))
return null;
Stream stream = (read) ? process.StandardOutput.BaseStream : process.StandardInput.BaseStream;
StreamAccessOptions access = (read) ? StreamAccessOptions.Read : StreamAccessOptions.Write;
ProcessWrapper wrapper = new ProcessWrapper(process);
PhpStream php_stream = new NativeStream(stream, wrapper, access, String.Empty, StreamContext.Default);
return php_stream;
}
private static bool RedirectStreams(Process/*!*/ process, PhpArray/*!*/ descriptors, PhpArray/*!*/ pipes)
{
using (var descriptors_enum = descriptors.GetFastEnumerator())
while (descriptors_enum.MoveNext())
{
int desc_no = descriptors_enum.CurrentKey.Integer;
StreamAccessOptions access;
Stream stream;
switch (desc_no)
{
case 0: stream = process.StandardInput.BaseStream; access = StreamAccessOptions.Write; break;
case 1: stream = process.StandardOutput.BaseStream; access = StreamAccessOptions.Read; break;
case 2: stream = process.StandardError.BaseStream; access = StreamAccessOptions.Read; break;
default: Debug.Fail(null); return false;
}
object value = PhpVariable.Dereference(descriptors_enum.CurrentValue);
PhpResource resource;
PhpArray array;
if ((array = PhpArray.AsPhpArray(value)) != null)
{
if (!array.Contains(0))
{
// value must be either a resource or an array:
PhpException.Throw(PhpError.Warning, LibResources.GetString("descriptor_item_missing_qualifier", desc_no));
return false;
}
string qualifier = Core.Convert.ObjectToString(array[0]);
switch (qualifier)
{
case "pipe":
{
// mode is ignored (it's determined by the stream):
PhpStream php_stream = new NativeStream(stream, null, access, String.Empty, StreamContext.Default);
pipes.Add(desc_no, php_stream);
break;
}
case "file":
{
if (!array.Contains(1))
{
PhpException.Throw(PhpError.Warning, LibResources.GetString("descriptor_item_missing_file_name", desc_no));
return false;
}
if (!array.Contains(2))
{
PhpException.Throw(PhpError.Warning, LibResources.GetString("descriptor_item_missing_mode", desc_no));
return false;
}
string path = Core.Convert.ObjectToString(array[1]);
string mode = Core.Convert.ObjectToString(array[2]);
PhpStream php_stream = PhpStream.Open(path, mode, StreamOpenOptions.Empty, StreamContext.Default);
if (php_stream == null)
return false;
if (!ActivePipe.BeginIO(stream, php_stream, access, desc_no)) return false;
break;
}
default:
PhpException.Throw(PhpError.Warning, LibResources.GetString("invalid_handle_qualifier", qualifier));
return false;
}
}
else if ((resource = value as PhpResource) != null)
{
PhpStream php_stream = PhpStream.GetValid(resource);
if (php_stream == null) return false;
if (!ActivePipe.BeginIO(stream, php_stream, access, desc_no)) return false;
}
else
{
// value must be either a resource or an array:
PhpException.Throw(PhpError.Warning, LibResources.GetString("descriptor_item_not_array_nor_resource", desc_no));
return false;
}
}
return true;
}
