/*============================================================================
  CMake - Cross Platform Makefile Generator
  Copyright 2000-2009 Kitware, Inc., Insight Software Consortium

  Distributed under the OSI-approved BSD License (the "License");
  see accompanying file Copyright.txt for details.

  This software is distributed WITHOUT ANY WARRANTY; without even the
  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the License for more information.
============================================================================*/
#include "cmProcessTools.h"

#include <cmsys/Process.h>

void cmProcessTools::RunProcess(struct cmsysProcess_s* cp,
                                OutputParser* out, OutputParser* err)
{
  cmsysProcess_Execute(cp);
  char* data = 0;
  int length = 0;
  int p;
  while((out||err) && (p=cmsysProcess_WaitForData(cp, &data, &length, 0), p))
    {
    if(out && p == cmsysProcess_Pipe_STDOUT)
      {
      if(!out->Process(data, length))
        {
        out = 0;
        }
      }
    else if(err && p == cmsysProcess_Pipe_STDERR)
      {
      if(!err->Process(data, length))
        {
        err = 0;
        }
      }
    }
  cmsysProcess_WaitForExit(cp, 0);
}


cmProcessTools::LineParser::LineParser(char sep, bool ignoreCR):
   Log(0), Prefix(0), Separator(sep), LineEnd('\0'), IgnoreCR(ignoreCR)
{
}

void cmProcessTools::LineParser::SetLog(std::ostream* log, const char* prefix)
{
  this->Log = log;
  this->Prefix = prefix? prefix : "";
}

bool cmProcessTools::LineParser::ProcessChunk(const char* first, int length)
{
  const char* last = first + length;
  for(const char* c = first; c != last; ++c)
    {
    if(*c == this->Separator || *c == '\0')
      {
      this->LineEnd = *c;

      // Log this line.
      if(this->Log && this->Prefix)
        {
        *this->Log << this->Prefix << this->Line << "\n";
        }

      // Hand this line to the subclass implementation.
      if(!this->ProcessLine())
        {
        this->Line = "";
        return false;
        }

      this->Line = "";
      }
    else if(*c != '\r' || !this->IgnoreCR)
      {
      // Append this character to the line under construction.
      this->Line.append(1, *c);
      }
    }
  return true;
}
