CMake/Source/CTest/cmCTestBuildHandler.cxx

/*============================================================================
  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 "cmCTestBuildHandler.h"

#include "cmCTest.h"
#include "cmake.h"
#include "cmMakefile.h"
#include "cmGlobalGenerator.h"
#include "cmGeneratedFileStream.h"
#include "cmXMLWriter.h"
#include "cmFileTimeComparison.h"
#include "cmAlgorithms.h"

//#include <cmsys/RegularExpression.hxx>
#include <cmsys/Process.h>
#include <cmsys/Directory.hxx>
#include <cmsys/FStream.hxx>

// used for sleep
#ifdef _WIN32
#include "windows.h"
#endif

#include <stdlib.h>
#include <time.h>
#include <math.h>
#include <float.h>


static const char* cmCTestErrorMatches[] = {
  "^[Bb]us [Ee]rror",
  "^[Ss]egmentation [Vv]iolation",
  "^[Ss]egmentation [Ff]ault",
  ":.*[Pp]ermission [Dd]enied",
  "([^ :]+):([0-9]+): ([^ \\t])",
  "([^:]+): error[ \\t]*[0-9]+[ \\t]*:",
  "^Error ([0-9]+):",
  "^Fatal",
  "^Error: ",
  "^Error ",
  "[0-9] ERROR: ",
  "^\"[^\"]+\", line [0-9]+: [^Ww]",
  "^cc[^C]*CC: ERROR File = ([^,]+), Line = ([0-9]+)",
  "^ld([^:])*:([ \\t])*ERROR([^:])*:",
  "^ild:([ \\t])*\\(undefined symbol\\)",
  "([^ :]+) : (error|fatal error|catastrophic error)",
  "([^:]+): (Error:|error|undefined reference|multiply defined)",
  "([^:]+)\\(([^\\)]+)\\) ?: (error|fatal error|catastrophic error)",
  "^fatal error C[0-9]+:",
  ": syntax error ",
  "^collect2: ld returned 1 exit status",
  "ld terminated with signal",
  "Unsatisfied symbol",
  "^Unresolved:",
  "Undefined symbol",
  "^Undefined[ \\t]+first referenced",
  "^CMake Error.*:",
  ":[ \\t]cannot find",
  ":[ \\t]can't find",
  ": \\*\\*\\* No rule to make target [`'].*\\'.  Stop",
  ": \\*\\*\\* No targets specified and no makefile found",
  ": Invalid loader fixup for symbol",
  ": Invalid fixups exist",
  ": Can't find library for",
  ": internal link edit command failed",
  ": Unrecognized option [`'].*\\'",
  "\", line [0-9]+\\.[0-9]+: [0-9]+-[0-9]+ \\([^WI]\\)",
  "ld: 0706-006 Cannot find or open library file: -l ",
  "ild: \\(argument error\\) can't find library argument ::",
  "^could not be found and will not be loaded.",
  "s:616 string too big",
  "make: Fatal error: ",
  "ld: 0711-993 Error occurred while writing to the output file:",
  "ld: fatal: ",
  "final link failed:",
  "make: \\*\\*\\*.*Error",
  "make\\[.*\\]: \\*\\*\\*.*Error",
  "\\*\\*\\* Error code",
  "nternal error:",
  "Makefile:[0-9]+: \\*\\*\\* .*  Stop\\.",
  ": No such file or directory",
  ": Invalid argument",
  "^The project cannot be built\\.",
  "^\\[ERROR\\]",
  "^Command .* failed with exit code",
  0
};

static const char* cmCTestErrorExceptions[] = {
  "instantiated from ",
  "candidates are:",
  ": warning",
  ": \\(Warning\\)",
  ": note",
  "makefile:",
  "Makefile:",
  ":[ \\t]+Where:",
  "([^ :]+):([0-9]+): Warning",
  "------ Build started: .* ------",
  0
};

static const char* cmCTestWarningMatches[] = {
  "([^ :]+):([0-9]+): warning:",
  "([^ :]+):([0-9]+): note:",
  "^cc[^C]*CC: WARNING File = ([^,]+), Line = ([0-9]+)",
  "^ld([^:])*:([ \\t])*WARNING([^:])*:",
  "([^:]+): warning ([0-9]+):",
  "^\"[^\"]+\", line [0-9]+: [Ww](arning|arnung)",
  "([^:]+): warning[ \\t]*[0-9]+[ \\t]*:",
  "^(Warning|Warnung) ([0-9]+):",
  "^(Warning|Warnung)[ :]",
  "WARNING: ",
  "([^ :]+) : warning",
  "([^:]+): warning",
  "\", line [0-9]+\\.[0-9]+: [0-9]+-[0-9]+ \\([WI]\\)",
  "^cxx: Warning:",
  ".*file: .* has no symbols",
  "([^ :]+):([0-9]+): (Warning|Warnung)",
  "\\([0-9]*\\): remark #[0-9]*",
  "\".*\", line [0-9]+: remark\\([0-9]*\\):",
  "cc-[0-9]* CC: REMARK File = .*, Line = [0-9]*",
  "^CMake Warning.*:",
  "^\\[WARNING\\]",
  0
};

static const char* cmCTestWarningExceptions[] = {
  "/usr/.*/X11/Xlib\\.h:[0-9]+: war.*: ANSI C\\+\\+ forbids declaration",
  "/usr/.*/X11/Xutil\\.h:[0-9]+: war.*: ANSI C\\+\\+ forbids declaration",
  "/usr/.*/X11/XResource\\.h:[0-9]+: war.*: ANSI C\\+\\+ forbids declaration",
  "WARNING 84 :",
  "WARNING 47 :",
  "makefile:",
  "Makefile:",
  "warning:  Clock skew detected.  Your build may be incomplete.",
  "/usr/openwin/include/GL/[^:]+:",
  "bind_at_load",
  "XrmQGetResource",
  "IceFlush",
  "warning LNK4089: all references to [^ \\t]+ discarded by .OPT:REF",
  "ld32: WARNING 85: definition of dataKey in",
  "cc: warning 422: Unknown option \"\\+b",
  "_with_warning_C",
  0
};

struct cmCTestBuildCompileErrorWarningRex
{
  const char* RegularExpressionString;
  int FileIndex;
  int LineIndex;
};

static cmCTestBuildCompileErrorWarningRex
cmCTestWarningErrorFileLine[] = {
    { "^Warning W[0-9]+ ([a-zA-Z.\\:/0-9_+ ~-]+) ([0-9]+):", 1, 2 },
    { "^([a-zA-Z./0-9_+ ~-]+):([0-9]+):", 1, 2 },
    { "^([a-zA-Z.\\:/0-9_+ ~-]+)\\(([0-9]+)\\)", 1, 2 },
    { "^[0-9]+>([a-zA-Z.\\:/0-9_+ ~-]+)\\(([0-9]+)\\)", 1, 2 },
    { "^([a-zA-Z./0-9_+ ~-]+)\\(([0-9]+)\\)", 1, 2 },
    { "\"([a-zA-Z./0-9_+ ~-]+)\", line ([0-9]+)", 1, 2 },
    { "File = ([a-zA-Z./0-9_+ ~-]+), Line = ([0-9]+)", 1, 2 },
    { 0, 0, 0 }
};

//----------------------------------------------------------------------
cmCTestBuildHandler::cmCTestBuildHandler()
{
  this->MaxPreContext = 10;
  this->MaxPostContext = 10;

  this->MaxErrors = 50;
  this->MaxWarnings = 50;

  this->LastErrorOrWarning = this->ErrorsAndWarnings.end();

  this->UseCTestLaunch = false;
}

//----------------------------------------------------------------------
void cmCTestBuildHandler::Initialize()
{
  this->Superclass::Initialize();
  this->StartBuild = "";
  this->EndBuild = "";
  this->CustomErrorMatches.clear();
  this->CustomErrorExceptions.clear();
  this->CustomWarningMatches.clear();
  this->CustomWarningExceptions.clear();
  this->ReallyCustomWarningMatches.clear();
  this->ReallyCustomWarningExceptions.clear();
  this->ErrorWarningFileLineRegex.clear();

  this->ErrorMatchRegex.clear();
  this->ErrorExceptionRegex.clear();
  this->WarningMatchRegex.clear();
  this->WarningExceptionRegex.clear();
  this->BuildProcessingQueue.clear();
  this->BuildProcessingErrorQueue.clear();
  this->BuildOutputLogSize = 0;
  this->CurrentProcessingLine.clear();

  this->SimplifySourceDir = "";
  this->SimplifyBuildDir = "";
  this->OutputLineCounter = 0;
  this->ErrorsAndWarnings.clear();
  this->LastErrorOrWarning = this->ErrorsAndWarnings.end();
  this->PostContextCount = 0;
  this->MaxPreContext = 10;
  this->MaxPostContext = 10;
  this->PreContext.clear();

  this->TotalErrors = 0;
  this->TotalWarnings = 0;
  this->LastTickChar = 0;

  this->ErrorQuotaReached = false;
  this->WarningQuotaReached = false;

  this->MaxErrors = 50;
  this->MaxWarnings = 50;

  this->UseCTestLaunch = false;
}

//----------------------------------------------------------------------
void cmCTestBuildHandler::PopulateCustomVectors(cmMakefile *mf)
{
  this->CTest->PopulateCustomVector(mf, "CTEST_CUSTOM_ERROR_MATCH",
                             this->CustomErrorMatches);
  this->CTest->PopulateCustomVector(mf, "CTEST_CUSTOM_ERROR_EXCEPTION",
                             this->CustomErrorExceptions);
  this->CTest->PopulateCustomVector(mf, "CTEST_CUSTOM_WARNING_MATCH",
                             this->CustomWarningMatches);
  this->CTest->PopulateCustomVector(mf, "CTEST_CUSTOM_WARNING_EXCEPTION",
                             this->CustomWarningExceptions);
  this->CTest->PopulateCustomInteger(mf,
                          "CTEST_CUSTOM_MAXIMUM_NUMBER_OF_ERRORS",
                          this->MaxErrors);
  this->CTest->PopulateCustomInteger(mf,
                             "CTEST_CUSTOM_MAXIMUM_NUMBER_OF_WARNINGS",
                             this->MaxWarnings);

  int n = -1;
  this->CTest->PopulateCustomInteger(mf, "CTEST_CUSTOM_ERROR_PRE_CONTEXT", n);
  if (n != -1)
    {
    this->MaxPreContext = static_cast<size_t>(n);
    }

  n = -1;
  this->CTest->PopulateCustomInteger(mf, "CTEST_CUSTOM_ERROR_POST_CONTEXT", n);
  if (n != -1)
    {
    this->MaxPostContext = static_cast<size_t>(n);
    }

  // Record the user-specified custom warning rules.
  if(const char* customWarningMatchers =
     mf->GetDefinition("CTEST_CUSTOM_WARNING_MATCH"))
    {
    cmSystemTools::ExpandListArgument(customWarningMatchers,
                                      this->ReallyCustomWarningMatches);
    }
  if(const char* customWarningExceptions =
     mf->GetDefinition("CTEST_CUSTOM_WARNING_EXCEPTION"))
    {
    cmSystemTools::ExpandListArgument(customWarningExceptions,
                                      this->ReallyCustomWarningExceptions);
    }
}

//----------------------------------------------------------------------
std::string cmCTestBuildHandler::GetMakeCommand()
{
  std::string makeCommand
    = this->CTest->GetCTestConfiguration("MakeCommand");
  cmCTestOptionalLog(this->CTest,
    HANDLER_VERBOSE_OUTPUT, "MakeCommand:" << makeCommand << "\n",
    this->Quiet);

  std::string configType = this->CTest->GetConfigType();
  if (configType == "")
    {
    configType
      = this->CTest->GetCTestConfiguration("DefaultCTestConfigurationType");
    }
  if (configType == "")
    {
    configType = "Release";
    }

  cmSystemTools::ReplaceString(makeCommand,
    "${CTEST_CONFIGURATION_TYPE}", configType.c_str());

  return makeCommand;
}

//----------------------------------------------------------------------
//clearly it would be nice if this were broken up into a few smaller
//functions and commented...
int cmCTestBuildHandler::ProcessHandler()
{
  cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT, "Build project" << std::endl,
    this->Quiet);

  // do we have time for this
  if (this->CTest->GetRemainingTimeAllowed() < 120)
    {
    return 0;
    }

  int entry;
  for ( entry = 0;
    cmCTestWarningErrorFileLine[entry].RegularExpressionString;
    ++ entry )
    {
    cmCTestBuildHandler::cmCTestCompileErrorWarningRex r;
    if ( r.RegularExpression.compile(
        cmCTestWarningErrorFileLine[entry].RegularExpressionString) )
      {
      r.FileIndex = cmCTestWarningErrorFileLine[entry].FileIndex;
      r.LineIndex = cmCTestWarningErrorFileLine[entry].LineIndex;
      this->ErrorWarningFileLineRegex.push_back(r);
      }
    else
      {
      cmCTestLog(this->CTest, ERROR_MESSAGE,
        "Problem Compiling regular expression: "
       << cmCTestWarningErrorFileLine[entry].RegularExpressionString
       << std::endl);
      }
    }

  // Determine build command and build directory
  std::string makeCommand = this->GetMakeCommand();
  if (makeCommand.empty())
    {
    cmCTestLog(this->CTest, ERROR_MESSAGE,
      "Cannot find MakeCommand key in the DartConfiguration.tcl"
      << std::endl);
    return -1;
    }

  const std::string &buildDirectory
    = this->CTest->GetCTestConfiguration("BuildDirectory");
  if (buildDirectory.empty())
    {
    cmCTestLog(this->CTest, ERROR_MESSAGE,
      "Cannot find BuildDirectory  key in the DartConfiguration.tcl"
      << std::endl);
    return -1;
    }

  std::string const& useLaunchers =
    this->CTest->GetCTestConfiguration("UseLaunchers");
  this->UseCTestLaunch = cmSystemTools::IsOn(useLaunchers.c_str());

  // Create a last build log
  cmGeneratedFileStream ofs;
  double elapsed_time_start = cmSystemTools::GetTime();
  if ( !this->StartLogFile("Build", ofs) )
    {
    cmCTestLog(this->CTest, ERROR_MESSAGE, "Cannot create build log file"
      << std::endl);
    }

  // Create lists of regular expression strings for errors, error exceptions,
  // warnings and warning exceptions.
  std::vector<std::string>::size_type cc;
  for ( cc = 0; cmCTestErrorMatches[cc]; cc ++ )
    {
    this->CustomErrorMatches.push_back(cmCTestErrorMatches[cc]);
    }
  for ( cc = 0; cmCTestErrorExceptions[cc]; cc ++ )
    {
    this->CustomErrorExceptions.push_back(cmCTestErrorExceptions[cc]);
    }
  for ( cc = 0; cmCTestWarningMatches[cc]; cc ++ )
    {
    this->CustomWarningMatches.push_back(cmCTestWarningMatches[cc]);
    }

  for ( cc = 0; cmCTestWarningExceptions[cc]; cc ++ )
    {
    this->CustomWarningExceptions.push_back(cmCTestWarningExceptions[cc]);
    }

  // Pre-compile regular expressions objects for all regular expressions
  std::vector<std::string>::iterator it;

#define cmCTestBuildHandlerPopulateRegexVector(strings, regexes) \
  regexes.clear(); \
    cmCTestOptionalLog(this->CTest, DEBUG, this << "Add " #regexes \
    << std::endl, this->Quiet); \
  for ( it = strings.begin(); it != strings.end(); ++it ) \
    { \
    cmCTestOptionalLog(this->CTest, DEBUG, "Add " #strings ": " \
    << *it << std::endl, this->Quiet); \
    regexes.push_back(it->c_str()); \
    }
  cmCTestBuildHandlerPopulateRegexVector(
    this->CustomErrorMatches, this->ErrorMatchRegex);
  cmCTestBuildHandlerPopulateRegexVector(
    this->CustomErrorExceptions, this->ErrorExceptionRegex);
  cmCTestBuildHandlerPopulateRegexVector(
    this->CustomWarningMatches, this->WarningMatchRegex);
  cmCTestBuildHandlerPopulateRegexVector(
    this->CustomWarningExceptions, this->WarningExceptionRegex);


  // Determine source and binary tree substitutions to simplify the output.
  this->SimplifySourceDir = "";
  this->SimplifyBuildDir = "";
  if ( this->CTest->GetCTestConfiguration("SourceDirectory").size() > 20 )
    {
    std::string srcdir
      = this->CTest->GetCTestConfiguration("SourceDirectory") + "/";
    std::string srcdirrep;
    for ( cc = srcdir.size()-2; cc > 0; cc -- )
      {
      if ( srcdir[cc] == '/' )
        {
        srcdirrep = srcdir.c_str() + cc;
        srcdirrep = "/..." + srcdirrep;
        srcdir = srcdir.substr(0, cc+1);
        break;
        }
      }
    this->SimplifySourceDir = srcdir;
    }
  if ( this->CTest->GetCTestConfiguration("BuildDirectory").size() > 20 )
    {
    std::string bindir
      = this->CTest->GetCTestConfiguration("BuildDirectory") + "/";
    std::string bindirrep;
    for ( cc = bindir.size()-2; cc > 0; cc -- )
      {
      if ( bindir[cc] == '/' )
        {
        bindirrep = bindir.c_str() + cc;
        bindirrep = "/..." + bindirrep;
        bindir = bindir.substr(0, cc+1);
        break;
        }
      }
    this->SimplifyBuildDir = bindir;
    }


  // Ok, let's do the build

  // Remember start build time
  this->StartBuild = this->CTest->CurrentTime();
  this->StartBuildTime = cmSystemTools::GetTime();
  int retVal = 0;
  int res = cmsysProcess_State_Exited;
  if ( !this->CTest->GetShowOnly() )
    {
    res = this->RunMakeCommand(makeCommand.c_str(), &retVal,
      buildDirectory.c_str(), 0, ofs);
    }
  else
    {
    cmCTestOptionalLog(this->CTest, DEBUG, "Build with command: " <<
      makeCommand << std::endl, this->Quiet);
    }

  // Remember end build time and calculate elapsed time
  this->EndBuild = this->CTest->CurrentTime();
  this->EndBuildTime = cmSystemTools::GetTime();
  double elapsed_build_time = cmSystemTools::GetTime() - elapsed_time_start;

  // Cleanups strings in the errors and warnings list.
  t_ErrorsAndWarningsVector::iterator evit;
  if ( !this->SimplifySourceDir.empty() )
    {
    for ( evit = this->ErrorsAndWarnings.begin();
      evit != this->ErrorsAndWarnings.end();
      ++ evit )
      {
      cmSystemTools::ReplaceString(
        evit->Text, this->SimplifySourceDir.c_str(), "/.../");
      cmSystemTools::ReplaceString(
        evit->PreContext, this->SimplifySourceDir.c_str(), "/.../");
      cmSystemTools::ReplaceString(
        evit->PostContext, this->SimplifySourceDir.c_str(), "/.../");
      }
    }

  if ( !this->SimplifyBuildDir.empty() )
    {
    for ( evit = this->ErrorsAndWarnings.begin();
      evit != this->ErrorsAndWarnings.end();
      ++ evit )
      {
      cmSystemTools::ReplaceString(
        evit->Text, this->SimplifyBuildDir.c_str(), "/.../");
      cmSystemTools::ReplaceString(
        evit->PreContext, this->SimplifyBuildDir.c_str(), "/.../");
      cmSystemTools::ReplaceString(
        evit->PostContext, this->SimplifyBuildDir.c_str(), "/.../");
      }
    }

  // Generate XML output
  cmGeneratedFileStream xofs;
  if(!this->StartResultingXML(cmCTest::PartBuild, "Build", xofs))
    {
    cmCTestLog(this->CTest, ERROR_MESSAGE, "Cannot create build XML file"
      << std::endl);
    return -1;
    }
  cmXMLWriter xml(xofs);
  this->GenerateXMLHeader(xml);
  if(this->UseCTestLaunch)
    {
    this->GenerateXMLLaunched(xml);
    }
  else
    {
    this->GenerateXMLLogScraped(xml);
    }
  this->GenerateXMLFooter(xml, elapsed_build_time);

  if (res != cmsysProcess_State_Exited || retVal || this->TotalErrors > 0)
    {
    cmCTestLog(this->CTest, ERROR_MESSAGE, "Error(s) when building project"
      << std::endl);
    }

  // Display message about number of errors and warnings
  cmCTestLog(this->CTest, HANDLER_OUTPUT, "   " << this->TotalErrors
    << (this->TotalErrors >= this->MaxErrors ? " or more" : "")
    << " Compiler errors" << std::endl);
  cmCTestLog(this->CTest, HANDLER_OUTPUT, "   " << this->TotalWarnings
    << (this->TotalWarnings >= this->MaxWarnings ? " or more" : "")
    << " Compiler warnings" << std::endl);

  return retVal;
}

//----------------------------------------------------------------------------
void cmCTestBuildHandler::GenerateXMLHeader(cmXMLWriter& xml)
{
  this->CTest->StartXML(xml, this->AppendXML);
  xml.StartElement("Build");
  xml.Element("StartDateTime", this->StartBuild);
  xml.Element("StartBuildTime",
    static_cast<unsigned int>(this->StartBuildTime));
  xml.Element("BuildCommand", this->GetMakeCommand());
}

//----------------------------------------------------------------------------
class cmCTestBuildHandler::FragmentCompare
{
public:
  FragmentCompare(cmFileTimeComparison* ftc): FTC(ftc) {}
  FragmentCompare(): FTC(0) {}
  bool operator()(std::string const& l, std::string const& r)
    {
    // Order files by modification time.  Use lexicographic order
    // among files with the same time.
    int result;
    if(this->FTC->FileTimeCompare(l.c_str(), r.c_str(), &result) &&
       result != 0)
      {
      return result < 0;
      }
    else
      {
      return l < r;
      }
    }
private:
  cmFileTimeComparison* FTC;
};

//----------------------------------------------------------------------------
void cmCTestBuildHandler::GenerateXMLLaunched(cmXMLWriter& xml)
{
  if(this->CTestLaunchDir.empty())
    {
    return;
    }

  // Sort XML fragments in chronological order.
  cmFileTimeComparison ftc;
  FragmentCompare fragmentCompare(&ftc);
  typedef std::set<std::string, FragmentCompare> Fragments;
  Fragments fragments(fragmentCompare);

  // only report the first 50 warnings and first 50 errors
  int numErrorsAllowed = this->MaxErrors;
  int numWarningsAllowed = this->MaxWarnings;
  // Identify fragments on disk.
  cmsys::Directory launchDir;
  launchDir.Load(this->CTestLaunchDir);
  unsigned long n = launchDir.GetNumberOfFiles();
  for(unsigned long i=0; i < n; ++i)
    {
    const char* fname = launchDir.GetFile(i);
    if(this->IsLaunchedErrorFile(fname) && numErrorsAllowed)
      {
      numErrorsAllowed--;
      fragments.insert(this->CTestLaunchDir + "/" + fname);
      ++this->TotalErrors;
      }
    else if(this->IsLaunchedWarningFile(fname) && numWarningsAllowed)
      {
      numWarningsAllowed--;
      fragments.insert(this->CTestLaunchDir + "/" + fname);
      ++this->TotalWarnings;
      }
    }

  // Copy the fragments into the final XML file.
  for(Fragments::const_iterator fi = fragments.begin();
      fi != fragments.end(); ++fi)
    {
    xml.FragmentFile(fi->c_str());
    }
}

//----------------------------------------------------------------------------
void cmCTestBuildHandler::GenerateXMLLogScraped(cmXMLWriter& xml)
{
  std::vector<cmCTestBuildErrorWarning>& ew = this->ErrorsAndWarnings;
  std::vector<cmCTestBuildErrorWarning>::iterator it;

  // only report the first 50 warnings and first 50 errors
  int numErrorsAllowed = this->MaxErrors;
  int numWarningsAllowed = this->MaxWarnings;
  std::string srcdir = this->CTest->GetCTestConfiguration("SourceDirectory");
  // make sure the source dir is in the correct case on windows
  // via a call to collapse full path.
  srcdir = cmSystemTools::CollapseFullPath(srcdir);
  srcdir += "/";
  for ( it = ew.begin();
        it != ew.end() && (numErrorsAllowed || numWarningsAllowed); it++ )
    {
    cmCTestBuildErrorWarning *cm = &(*it);
    if ((cm->Error && numErrorsAllowed) ||
        (!cm->Error && numWarningsAllowed))
      {
      if (cm->Error)
        {
        numErrorsAllowed--;
        }
      else
        {
        numWarningsAllowed--;
        }
      xml.StartElement(cm->Error ? "Error" : "Warning");
      xml.Element("BuildLogLine", cm->LogLine);
      xml.Element("Text", cm->Text);
      std::vector<cmCTestCompileErrorWarningRex>::iterator rit;
      for ( rit = this->ErrorWarningFileLineRegex.begin();
            rit != this->ErrorWarningFileLineRegex.end(); ++ rit )
        {
        cmsys::RegularExpression* re = &rit->RegularExpression;
        if ( re->find(cm->Text.c_str() ) )
          {
          cm->SourceFile = re->match(rit->FileIndex);
          // At this point we need to make this->SourceFile relative to
          // the source root of the project, so cvs links will work
          cmSystemTools::ConvertToUnixSlashes(cm->SourceFile);
          if(cm->SourceFile.find("/.../") != cm->SourceFile.npos)
            {
            cmSystemTools::ReplaceString(cm->SourceFile, "/.../", "");
            std::string::size_type p = cm->SourceFile.find("/");
            if(p != cm->SourceFile.npos)
              {
              cm->SourceFile = cm->SourceFile.substr(
                p+1, cm->SourceFile.size()-p);
              }
            }
          else
            {
            // make sure it is a full path with the correct case
            cm->SourceFile = cmSystemTools::CollapseFullPath(
              cm->SourceFile);
            cmSystemTools::ReplaceString(
              cm->SourceFile, srcdir.c_str(), "");
            }
          cm->LineNumber = atoi(re->match(rit->LineIndex).c_str());
          break;
          }
        }
      if ( !cm->SourceFile.empty() && cm->LineNumber >= 0 )
        {
        if (!cm->SourceFile.empty())
          {
          xml.Element("SourceFile", cm->SourceFile);
          }
        if (!cm->SourceFileTail.empty())
          {
          xml.Element("SourceFileTail", cm->SourceFileTail);
          }
        if ( cm->LineNumber >= 0 )
          {
          xml.Element("SourceLineNumber", cm->LineNumber);
          }
        }
      xml.Element("PreContext", cm->PreContext);
      xml.StartElement("PostContext");
      xml.Content(cm->PostContext);
      // is this the last warning or error, if so notify
      if ((cm->Error && !numErrorsAllowed) ||
          (!cm->Error && !numWarningsAllowed))
        {
        xml.Content("\nThe maximum number of reported warnings or errors "
          "has been reached!!!\n");
        }
      xml.EndElement(); // PostContext
      xml.Element("RepeatCount", "0");
      xml.EndElement(); // "Error" / "Warning"
      }
    }
}

//----------------------------------------------------------------------------
void cmCTestBuildHandler::GenerateXMLFooter(cmXMLWriter& xml,
                                            double elapsed_build_time)
{
  xml.StartElement("Log");
  xml.Attribute("Encoding", "base64");
  xml.Attribute("Compression", "bin/gzip");
  xml.EndElement(); // Log

  xml.Element("EndDateTime", this->EndBuild);
  xml.Element("EndBuildTime", static_cast<unsigned int>(this->EndBuildTime));
  xml.Element("ElapsedMinutes", static_cast<int>(elapsed_build_time/6)/10.0);
  xml.EndElement(); // Build
  this->CTest->EndXML(xml);
}

//----------------------------------------------------------------------------
bool cmCTestBuildHandler::IsLaunchedErrorFile(const char* fname)
{
  // error-{hash}.xml
  return (cmHasLiteralPrefix(fname, "error-") &&
          strcmp(fname+strlen(fname)-4, ".xml") == 0);
}

//----------------------------------------------------------------------------
bool cmCTestBuildHandler::IsLaunchedWarningFile(const char* fname)
{
  // warning-{hash}.xml
  return (cmHasLiteralPrefix(fname, "warning-") &&
          strcmp(fname+strlen(fname)-4, ".xml") == 0);
}

//######################################################################
//######################################################################
//######################################################################
//######################################################################

//----------------------------------------------------------------------------
class cmCTestBuildHandler::LaunchHelper
{
public:
  LaunchHelper(cmCTestBuildHandler* handler);
  ~LaunchHelper();
private:
  cmCTestBuildHandler* Handler;
  cmCTest* CTest;

  void WriteLauncherConfig();
  void WriteScrapeMatchers(const char* purpose,
                           std::vector<std::string> const& matchers);
};

//----------------------------------------------------------------------------
cmCTestBuildHandler::LaunchHelper::LaunchHelper(cmCTestBuildHandler* handler):
  Handler(handler), CTest(handler->CTest)
{
  std::string tag = this->CTest->GetCurrentTag();
  if(tag.empty())
    {
    // This is not for a dashboard submission, so there is no XML.
    // Skip enabling the launchers.
    this->Handler->UseCTestLaunch = false;
    }
  else
    {
    // Compute a directory in which to store launcher fragments.
    std::string& launchDir = this->Handler->CTestLaunchDir;
    launchDir = this->CTest->GetBinaryDir();
    launchDir += "/Testing/";
    launchDir += tag;
    launchDir += "/Build";

    // Clean out any existing launcher fragments.
    cmSystemTools::RemoveADirectory(launchDir);

    if(this->Handler->UseCTestLaunch)
      {
      // Enable launcher fragments.
      cmSystemTools::MakeDirectory(launchDir.c_str());
      this->WriteLauncherConfig();
      std::string launchEnv = "CTEST_LAUNCH_LOGS=";
      launchEnv += launchDir;
      cmSystemTools::PutEnv(launchEnv);
      }
    }

  // If not using launchers, make sure they passthru.
  if(!this->Handler->UseCTestLaunch)
    {
    cmSystemTools::UnsetEnv("CTEST_LAUNCH_LOGS");
    }
}

//----------------------------------------------------------------------------
cmCTestBuildHandler::LaunchHelper::~LaunchHelper()
{
  if(this->Handler->UseCTestLaunch)
    {
    cmSystemTools::UnsetEnv("CTEST_LAUNCH_LOGS");
    }
}

//----------------------------------------------------------------------------
void cmCTestBuildHandler::LaunchHelper::WriteLauncherConfig()
{
  this->WriteScrapeMatchers("Warning",
                            this->Handler->ReallyCustomWarningMatches);
  this->WriteScrapeMatchers("WarningSuppress",
                            this->Handler->ReallyCustomWarningExceptions);

  // Give some testing configuration information to the launcher.
  std::string fname = this->Handler->CTestLaunchDir;
  fname += "/CTestLaunchConfig.cmake";
  cmGeneratedFileStream fout(fname.c_str());
  std::string srcdir = this->CTest->GetCTestConfiguration("SourceDirectory");
  fout << "set(CTEST_SOURCE_DIRECTORY \"" << srcdir << "\")\n";
}

//----------------------------------------------------------------------------
void
cmCTestBuildHandler::LaunchHelper
::WriteScrapeMatchers(const char* purpose,
                      std::vector<std::string> const& matchers)
{
  if(matchers.empty())
    {
    return;
    }
  std::string fname = this->Handler->CTestLaunchDir;
  fname += "/Custom";
  fname += purpose;
  fname += ".txt";
  cmGeneratedFileStream fout(fname.c_str());
  for(std::vector<std::string>::const_iterator mi = matchers.begin();
      mi != matchers.end(); ++mi)
    {
    fout << *mi << "\n";
    }
}

//----------------------------------------------------------------------
int cmCTestBuildHandler::RunMakeCommand(const char* command,
  int* retVal, const char* dir, int timeout, std::ostream& ofs)
{
  // First generate the command and arguments
  std::vector<std::string> args = cmSystemTools::ParseArguments(command);

  if(args.size() < 1)
    {
    return false;
    }

  std::vector<const char*> argv;
  for(std::vector<std::string>::const_iterator a = args.begin();
    a != args.end(); ++a)
    {
    argv.push_back(a->c_str());
    }
  argv.push_back(0);

  cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT, "Run command:",
    this->Quiet);
  std::vector<const char*>::iterator ait;
  for ( ait = argv.begin(); ait != argv.end() && *ait; ++ ait )
    {
    cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT, " \"" << *ait <<
      "\"", this->Quiet);
    }
  cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT, std::endl,
    this->Quiet);

  // Optionally use make rule launchers to record errors and warnings.
  LaunchHelper launchHelper(this);
  static_cast<void>(launchHelper);

  // Now create process object
  cmsysProcess* cp = cmsysProcess_New();
  cmsysProcess_SetCommand(cp, &*argv.begin());
  cmsysProcess_SetWorkingDirectory(cp, dir);
  cmsysProcess_SetOption(cp, cmsysProcess_Option_HideWindow, 1);
  cmsysProcess_SetTimeout(cp, timeout);
  cmsysProcess_Execute(cp);

  // Initialize tick's
  std::string::size_type tick = 0;
  const std::string::size_type tick_len = 1024;

  char* data;
  int length;
  cmCTestOptionalLog(this->CTest, HANDLER_PROGRESS_OUTPUT,
    "   Each symbol represents " << tick_len << " bytes of output."
    << std::endl
    << (this->UseCTestLaunch? "" :
        "   '!' represents an error and '*' a warning.\n")
    << "    " << std::flush, this->Quiet);

  // Initialize building structures
  this->BuildProcessingQueue.clear();
  this->OutputLineCounter = 0;
  this->ErrorsAndWarnings.clear();
  this->TotalErrors = 0;
  this->TotalWarnings = 0;
  this->BuildOutputLogSize = 0;
  this->LastTickChar = '.';
  this->WarningQuotaReached = false;
  this->ErrorQuotaReached = false;

  // For every chunk of data
  int res;
  while((res = cmsysProcess_WaitForData(cp, &data, &length, 0)))
    {
    // Replace '\0' with '\n', since '\0' does not really make sense. This is
    // for Visual Studio output
    for(int cc =0; cc < length; ++cc)
      {
      if(data[cc] == 0)
        {
        data[cc] = '\n';
        }
      }

    // Process the chunk of data
    if ( res == cmsysProcess_Pipe_STDERR )
      {
      this->ProcessBuffer(data, length, tick, tick_len, ofs,
        &this->BuildProcessingErrorQueue);
      }
    else
      {
      this->ProcessBuffer(data, length, tick, tick_len, ofs,
        &this->BuildProcessingQueue);
      }
    }

  this->ProcessBuffer(0, 0, tick, tick_len, ofs, &this->BuildProcessingQueue);
  this->ProcessBuffer(0, 0, tick, tick_len, ofs,
    &this->BuildProcessingErrorQueue);
  cmCTestOptionalLog(this->CTest, HANDLER_PROGRESS_OUTPUT, " Size of output: "
    << ((this->BuildOutputLogSize + 512) / 1024) << "K" << std::endl,
    this->Quiet);

  // Properly handle output of the build command
  cmsysProcess_WaitForExit(cp, 0);
  int result = cmsysProcess_GetState(cp);

  if(result == cmsysProcess_State_Exited)
    {
    if (retVal)
      {
      *retVal = cmsysProcess_GetExitValue(cp);
      cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
      "Command exited with the value: " << *retVal << std::endl, this->Quiet);
      // if a non zero return value
      if (*retVal)
        {
        // If there was an error running command, report that on the
        // dashboard.
        cmCTestBuildErrorWarning errorwarning;
        errorwarning.LogLine     = 1;
        errorwarning.Text
          = "*** WARNING non-zero return value in ctest from: ";
        errorwarning.Text        += argv[0];
        errorwarning.PreContext  = "";
        errorwarning.PostContext = "";
        errorwarning.Error       = false;
        this->ErrorsAndWarnings.push_back(errorwarning);
        this->TotalWarnings ++;
        }
      }
    }
  else if(result == cmsysProcess_State_Exception)
    {
    if (retVal)
      {
      *retVal = cmsysProcess_GetExitException(cp);
      cmCTestOptionalLog(this->CTest, WARNING, "There was an exception: " <<
        *retVal << std::endl, this->Quiet);
      }
    }
  else if(result == cmsysProcess_State_Expired)
    {
    cmCTestOptionalLog(this->CTest, WARNING, "There was a timeout" <<
      std::endl, this->Quiet);
    }
  else if(result == cmsysProcess_State_Error)
    {
    // If there was an error running command, report that on the dashboard.
    cmCTestBuildErrorWarning errorwarning;
    errorwarning.LogLine     = 1;
    errorwarning.Text        = "*** ERROR executing: ";
    errorwarning.Text        += cmsysProcess_GetErrorString(cp);
    errorwarning.PreContext  = "";
    errorwarning.PostContext = "";
    errorwarning.Error       = true;
    this->ErrorsAndWarnings.push_back(errorwarning);
    this->TotalErrors ++;
    cmCTestLog(this->CTest, ERROR_MESSAGE, "There was an error: "
      << cmsysProcess_GetErrorString(cp) << std::endl);
    }

  cmsysProcess_Delete(cp);
  return result;
}

//######################################################################
//######################################################################
//######################################################################
//######################################################################

//----------------------------------------------------------------------
void cmCTestBuildHandler::ProcessBuffer(const char* data, int length,
  size_t& tick, size_t tick_len, std::ostream& ofs,
  t_BuildProcessingQueueType* queue)
{
  const std::string::size_type tick_line_len = 50;
  const char* ptr;
  for ( ptr = data; ptr < data+length; ptr ++ )
    {
    queue->push_back(*ptr);
    }
  this->BuildOutputLogSize += length;

  // until there are any lines left in the buffer
  while ( 1 )
    {
    // Find the end of line
    t_BuildProcessingQueueType::iterator it;
    for ( it = queue->begin();
      it != queue->end();
      ++ it )
      {
      if ( *it == '\n' )
        {
        break;
        }
      }

    // Once certain number of errors or warnings reached, ignore future errors
    // or warnings.
    if ( this->TotalWarnings >= this->MaxWarnings )
      {
      this->WarningQuotaReached = true;
      }
    if ( this->TotalErrors >= this->MaxErrors )
      {
      this->ErrorQuotaReached = true;
      }

    // If the end of line was found
    if ( it != queue->end() )
      {
      // Create a contiguous array for the line
      this->CurrentProcessingLine.clear();
      this->CurrentProcessingLine.insert(this->CurrentProcessingLine.end(),
                                         queue->begin(), it);
      this->CurrentProcessingLine.push_back(0);
      const char* line = &*this->CurrentProcessingLine.begin();

      // Process the line
      int lineType = this->ProcessSingleLine(line);

      // Erase the line from the queue
      queue->erase(queue->begin(), it+1);

      // Depending on the line type, produce error or warning, or nothing
      cmCTestBuildErrorWarning errorwarning;
      bool found = false;
      switch ( lineType )
        {
      case b_WARNING_LINE:
        this->LastTickChar = '*';
        errorwarning.Error = false;
        found = true;
        this->TotalWarnings ++;
        break;
      case b_ERROR_LINE:
        this->LastTickChar = '!';
        errorwarning.Error = true;
        found = true;
        this->TotalErrors ++;
        break;
        }
      if ( found )
        {
        // This is an error or warning, so generate report
        errorwarning.LogLine   = static_cast<int>(this->OutputLineCounter+1);
        errorwarning.Text        = line;
        errorwarning.PreContext  = "";
        errorwarning.PostContext = "";

        // Copy pre-context to report
        std::deque<std::string>::iterator pcit;
        for ( pcit = this->PreContext.begin();
          pcit != this->PreContext.end();
          ++pcit )
          {
          errorwarning.PreContext += *pcit + "\n";
          }
        this->PreContext.clear();

        // Store report
        this->ErrorsAndWarnings.push_back(errorwarning);
        this->LastErrorOrWarning = this->ErrorsAndWarnings.end()-1;
        this->PostContextCount = 0;
        }
      else
        {
        // This is not an error or warning.
        // So, figure out if this is a post-context line
        if ( !this->ErrorsAndWarnings.empty() &&
             this->LastErrorOrWarning != this->ErrorsAndWarnings.end() &&
             this->PostContextCount < this->MaxPostContext )
          {
          this->PostContextCount ++;
          this->LastErrorOrWarning->PostContext += line;
          if ( this->PostContextCount < this->MaxPostContext )
            {
            this->LastErrorOrWarning->PostContext += "\n";
            }
          }
        else
          {
          // Otherwise store pre-context for the next error
          this->PreContext.push_back(line);
          if ( this->PreContext.size() > this->MaxPreContext )
            {
            this->PreContext.erase(this->PreContext.begin(),
              this->PreContext.end()-this->MaxPreContext);
            }
          }
        }
      this->OutputLineCounter ++;
      }
    else
      {
      break;
      }
    }

  // Now that the buffer is processed, display missing ticks
  int tickDisplayed = false;
  while ( this->BuildOutputLogSize > (tick * tick_len) )
    {
    tick ++;
    cmCTestOptionalLog(this->CTest, HANDLER_PROGRESS_OUTPUT,
      this->LastTickChar, this->Quiet);
    tickDisplayed = true;
    if ( tick % tick_line_len == 0 && tick > 0 )
      {
      cmCTestOptionalLog(this->CTest, HANDLER_PROGRESS_OUTPUT, "  Size: "
        << ((this->BuildOutputLogSize + 512) / 1024) << "K" << std::endl
        << "    ", this->Quiet);
      }
    }
  if ( tickDisplayed )
    {
    this->LastTickChar = '.';
    }

  // And if this is verbose output, display the content of the chunk
  cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
    cmCTestLogWrite(data, length));

  // Always store the chunk to the file
  ofs << cmCTestLogWrite(data, length);
}

//----------------------------------------------------------------------
int cmCTestBuildHandler::ProcessSingleLine(const char* data)
{
  if(this->UseCTestLaunch)
    {
    // No log scraping when using launchers.
    return b_REGULAR_LINE;
    }

  cmCTestOptionalLog(this->CTest, DEBUG, "Line: [" << data << "]" <<
    std::endl, this->Quiet);

  std::vector<cmsys::RegularExpression>::iterator it;

  int warningLine = 0;
  int errorLine = 0;

  // Check for regular expressions

  if ( !this->ErrorQuotaReached )
    {
    // Errors
    int wrxCnt = 0;
    for ( it = this->ErrorMatchRegex.begin();
      it != this->ErrorMatchRegex.end();
      ++ it )
      {
      if ( it->find(data) )
        {
        errorLine = 1;
        cmCTestOptionalLog(this->CTest, DEBUG, "  Error Line: " << data
          << " (matches: " << this->CustomErrorMatches[wrxCnt] << ")"
          << std::endl, this->Quiet);
        break;
        }
      wrxCnt ++;
      }
    // Error exceptions
    wrxCnt = 0;
    for ( it = this->ErrorExceptionRegex.begin();
      it != this->ErrorExceptionRegex.end();
      ++ it )
      {
      if ( it->find(data) )
        {
        errorLine = 0;
        cmCTestOptionalLog(this->CTest, DEBUG, "  Not an error Line: " << data
          << " (matches: " << this->CustomErrorExceptions[wrxCnt] << ")"
          << std::endl, this->Quiet);
        break;
        }
      wrxCnt ++;
      }
    }
  if ( !this->WarningQuotaReached )
    {
    // Warnings
    int wrxCnt = 0;
    for ( it = this->WarningMatchRegex.begin();
      it != this->WarningMatchRegex.end();
      ++ it )
      {
      if ( it->find(data) )
        {
        warningLine = 1;
        cmCTestOptionalLog(this->CTest, DEBUG,
          "  Warning Line: " << data
          << " (matches: " << this->CustomWarningMatches[wrxCnt] << ")"
          << std::endl, this->Quiet);
        break;
        }
      wrxCnt ++;
      }

    wrxCnt = 0;
    // Warning exceptions
    for ( it = this->WarningExceptionRegex.begin();
      it != this->WarningExceptionRegex.end();
      ++ it )
      {
      if ( it->find(data) )
        {
        warningLine = 0;
        cmCTestOptionalLog(this->CTest, DEBUG, "  Not a warning Line: " << data
          << " (matches: " << this->CustomWarningExceptions[wrxCnt] << ")"
          << std::endl, this->Quiet);
        break;
        }
      wrxCnt ++;
      }
    }
  if ( errorLine )
    {
    return b_ERROR_LINE;
    }
  if ( warningLine )
    {
    return b_WARNING_LINE;
    }
  return b_REGULAR_LINE;
}