/// <summary>
/// Decodes the initial block that Mercurial outputs when it is spun up.
/// </summary>
private void DecodeInitialBlock()
{
char type;
string content;
int exitCode;
CommandServerOutputDecoder.DecodeOneBlock(_Process.StandardOutput, out type, out content, out exitCode);
}
/// <summary>
/// Executes the given <see cref="IMercurialCommand"/> command against
/// the Mercurial repository.
/// </summary>
/// <param name="command">
/// The <see cref="IMercurialCommand"/> command to execute.
/// </param>
/// <exception cref="ArgumentNullException">
/// <para><paramref name="command"/> is <c>null</c>.</para>
/// </exception>
/// <exception cref="MercurialException">
/// HG did not complete within the allotted time.
/// </exception>
public void Execute(IMercurialCommand command)
{
if (command == null)
{
throw new ArgumentNullException("command");
}
if (_Process == null)
{
StartPersistentMercurialClient();
}
command.Validate();
command.Before();
IEnumerable <string> arguments = new[]
{
command.Command,
"--noninteractive",
"--encoding",
ClientExecutable.TextEncodingName,
};
arguments = arguments.Concat(command.Arguments.Where(a => !StringEx.IsNullOrWhiteSpace(a)));
arguments = arguments.Concat(command.AdditionalArguments.Where(a => !StringEx.IsNullOrWhiteSpace(a)));
var commandParts = arguments.ToArray();
string commandEncoded = string.Join("\0", commandParts.Select(p => p.Trim('"')).ToArray());
int length = commandEncoded.Length;
var commandBuffer = new StringBuilder();
commandBuffer.Append("runcommand\n");
commandBuffer.Append((char)((length >> 24) & 0xff));
commandBuffer.Append((char)((length >> 16) & 0xff));
commandBuffer.Append((char)((length >> 8) & 0xff));
commandBuffer.Append((char)(length & 0xff));
commandBuffer.Append(commandEncoded);
string commandArguments = null;
if (command.Observer != null)
{
commandArguments = string.Join(" ", commandParts.Skip(1).ToArray());
command.Observer.Executing(command.Command, commandArguments);
}
byte[] buffer = ClientExecutable.TextEncoding.GetBytes(commandBuffer.ToString());
foreach (byte b in buffer)
{
_Process.StandardInput.BaseStream.WriteByte(b);
_Process.StandardInput.BaseStream.Flush();
}
string standardOutput;
string standardError;
int exitCode;
if (CommandServerOutputDecoder.GetOutput(_Process.StandardOutput, out standardOutput, out standardError, out exitCode))
{
if (command.Observer != null)
{
using (var lineReader = new StringReader(standardOutput))
{
string line;
while ((line = lineReader.ReadLine()) != null)
{
command.Observer.Output(line);
}
}
using (var lineReader = new StringReader(standardError))
{
string line;
while ((line = lineReader.ReadLine()) != null)
{
command.Observer.ErrorOutput(line);
}
}
command.Observer.Executed(command.Command, commandArguments, exitCode, standardOutput, standardError);
}
command.After(exitCode, standardOutput, standardError);
return;
}
StopPersistentMercurialClient();
throw new MercurialExecutionException("Unable to decode output from executing command, spinning down persistent client");
}
