DotRunner Class Reference

Helper class to run dot from doxygen from multiple threads. More...

#include <src/dotrunner.h>

Collaboration diagram for DotRunner:

Classes
struct	DotJob

Public Member Functions
	DotRunner (const QCString &absDotName, const QCString &md5Hash=QCString())
	Creates a runner for a dot file.
void	addJob (const QCString &format, const QCString &output, const QCString &srcFile, int srcLine)
	Adds an additional job to the run.
void	preventCleanUp ()
	Prevent cleanup of the dot file (for user provided dot files).
bool	run ()
	Runs dot for all jobs added.
QCString	getMd5Hash ()

Static Public Member Functions
static bool	readBoundingBox (const QCString &fileName, int *width, int *height, bool isEps)

Private Attributes
QCString	m_file
QCString	m_md5Hash
QCString	m_dotExe
bool	m_cleanUp
std::vector< DotJob >	m_jobs

Detailed Description

Helper class to run dot from doxygen from multiple threads.

Definition at line 30 of file dotrunner.h.

Constructor & Destructor Documentation

DotRunner()

DotRunner::DotRunner	(	const QCString &	absDotName,
		const QCString &	md5Hash = QCString() )

Creates a runner for a dot file.

Definition at line 258 of file dotrunner.cpp.

  : m_file(absDotName)
  , m_md5Hash(md5Hash)
  , m_dotExe(Doxygen::verifiedDotPath)
  , m_cleanUp(Config_getBool(DOT_CLEANUP))
{
}

References Config_getBool, m_cleanUp, m_dotExe, m_file, and m_md5Hash.

Member Function Documentation

addJob()

void DotRunner::addJob	(	const QCString &	format,
		const QCString &	output,
		const QCString &	srcFile,
		int	srcLine )

Adds an additional job to the run.

Performing multiple jobs one file can be faster.

Definition at line 267 of file dotrunner.cpp.

{
 
  for (auto& s: m_jobs)
  {
    if (s.format != format) continue;
    if (s.output != output) continue;
    // we have this job already
    return;
  }
  auto args = QCString("-T") + format + " -o \"" + output + "\"";
  m_jobs.emplace_back(format, output, args, srcFile, srcLine);
}

References m_jobs.

Referenced by DotGraph::prepareDotFile(), writeDotGraphFromFile(), and writeDotImageMapFromFile().

getMd5Hash()

QCString DotRunner::getMd5Hash ( )

inline

Definition at line 59 of file dotrunner.h.

{ return m_md5Hash; }

References m_md5Hash.

preventCleanUp()

void DotRunner::preventCleanUp ( )

inline

Prevent cleanup of the dot file (for user provided dot files).

Definition at line 54 of file dotrunner.h.

{ m_cleanUp = false; }

References m_cleanUp.

Referenced by writeDotGraphFromFile(), and writeDotImageMapFromFile().

readBoundingBox()

bool DotRunner::readBoundingBox ( const QCString & fileName, int * width, int * height, bool isEps )

static

Definition at line 138 of file dotrunner.cpp.

{
  std::ifstream f = Portable::openInputStream(fileName);
  if (!f.is_open())
  {
    err("Failed to open file {} for extracting bounding box\n",fileName);
    return false;
  }
 
  // read file contents into string 'contents'
  std::stringstream buffer;
  buffer << f.rdbuf();
  std::string contents = buffer.str();
 
  // start of bounding box marker we are looking for
  const std::string boundingBox = isEps ? "%%PageBoundingBox:" : "/MediaBox [";
 
  // helper routine to extract the bounding boxes width and height
  auto extractBoundingBox = [&fileName,&boundingBox,&width,&height](const char *s) -> bool
  {
    int x=0, y=0;
    double w=0, h=0;
    if (sscanf(s+boundingBox.length(),"%d %d %lf %lf",&x,&y,&w,&h)==4)
    {
      *width  = static_cast<int>(std::ceil(w));
      *height = static_cast<int>(std::ceil(h));
      return true;
    }
    err("Failed to extract bounding box from generated diagram file {}\n",fileName);
    return false;
  };
 
  // compressed segment start and end markers
  const std::string streamStart = "stream\n";
  const std::string streamEnd = "\nendstream";
 
  auto detectDeflateStreamStart = [&streamStart](const char *s)
  {
    size_t len = streamStart.length();
    bool streamOK = strncmp(s,streamStart.c_str(),len)==0;
    if (streamOK) // ASCII marker matches, check stream header bytes as well
    {
      unsigned short header1 = static_cast<unsigned char>(s[len])<<8; // CMF byte
      if (header1) // not end of string
      {
        unsigned short header = (static_cast<unsigned char>(s[len+1])) | header1; // FLG byte
        // check for correct header (see https://www.rfc-editor.org/rfc/rfc1950)
        return ((header&0x8F20)==0x0800) && (header%31)==0;
      }
    }
    return false;
  };
 
  const size_t l = contents.length();
  size_t i=0;
  while (i<l)
  {
    if (!isEps && contents[i]=='s' && detectDeflateStreamStart(&contents[i]))
    { // compressed stream start
      int col=17;
      i+=streamStart.length();
      const size_t start=i;
      DBG(("---- start stream at offset %08x\n",(int)i));
      while (i<l)
      {
        if (contents[i]=='\n' && strncmp(&contents[i],streamEnd.c_str(),streamEnd.length())==0)
        { // compressed block found in range [start..i]
          DBG(("\n---- end stream at offset %08x\n",(int)i));
          // decompress it into decompressBuf
          std::vector<char> decompressBuf;
          const char *source = &contents[start];
          const size_t sourceLen = i-start;
          size_t sourcePos = 0;
          decompressBuf.reserve(sourceLen*2);
          auto getter = [source,&sourcePos,sourceLen]() -> int {
            return sourcePos<sourceLen ? static_cast<unsigned char>(source[sourcePos++]) : EOF;
          };
          auto putter = [&decompressBuf](const char c) -> int {
            decompressBuf.push_back(c); return c;
          };
          Deflate(getter,putter);
          // convert decompression buffer to string
          std::string s(decompressBuf.begin(), decompressBuf.end());
          DBG(("decompressed_data=[[[\n%s\n]]]\n",s.c_str()));
          // search for bounding box marker
          const size_t idx = s.find(boundingBox);
          if (idx!=std::string::npos) // found bounding box in uncompressed data
          {
            return extractBoundingBox(s.c_str()+idx);
          }
          // continue searching after end stream marker
          i+=streamEnd.length();
          break;
        }
        else // compressed stream character
        {
          if (col>16) { col=0; DBG(("\n%08x: ",static_cast<int>(i))); }
          DBG(("%02x ",static_cast<unsigned char>(contents[i])));
          col++;
          i++;
        }
      }
    }
    else if (((isEps && contents[i]=='%') || (!isEps && contents[i]=='/')) &&
             strncmp(&contents[i],boundingBox.c_str(),boundingBox.length())==0)
    { // uncompressed bounding box
      return extractBoundingBox(&contents[i]);
    }
    else // uncompressed stream character
    {
      i++;
    }
  }
  err("Failed to find bounding box in generated diagram file {}\n",fileName);
  // nothing found
  return false;
}

References DBG, err, extractBoundingBox(), and Portable::openInputStream().

Referenced by run(), and DotFilePatcher::writeVecGfxFigure().

run()

bool DotRunner::run

(

)

Runs dot for all jobs added.

Definition at line 289 of file dotrunner.cpp.

{
  int exitCode=0;
 
  QCString dotArgs;
 
  QCString srcFile;
  int srcLine=-1;
 
  // create output
  if (Config_getBool(DOT_MULTI_TARGETS))
  {
    dotArgs=QCString("\"")+m_file+"\"";
    for (auto& s: m_jobs)
    {
      dotArgs+=' ';
      dotArgs+=s.args;
    }
    if (!m_jobs.empty())
    {
      srcFile = m_jobs.front().srcFile;
      srcLine = m_jobs.front().srcLine;
    }
    if ((exitCode=Portable::system(m_dotExe,dotArgs,FALSE))!=0) goto error;
  }
  else
  {
    for (auto& s : m_jobs)
    {
      srcFile = s.srcFile;
      srcLine = s.srcLine;
      dotArgs=QCString("\"")+m_file+"\" "+s.args;
      if ((exitCode=Portable::system(m_dotExe,dotArgs,FALSE))!=0) goto error;
    }
  }
 
  // check output
  // As there should be only one pdf file be generated, we don't need code for regenerating multiple pdf files in one call
  for (auto& s : m_jobs)
  {
    if (s.format.startsWith("pdf"))
    {
      int width=0,height=0;
      if (!readBoundingBox(s.output,&width,&height,FALSE)) goto error;
      if ((width > MAX_LATEX_GRAPH_SIZE) || (height > MAX_LATEX_GRAPH_SIZE))
      {
        if (!resetPDFSize(width,height,getBaseNameOfOutput(s.output))) goto error;
        dotArgs=QCString("\"")+m_file+"\" "+s.args;
        if ((exitCode=Portable::system(m_dotExe,dotArgs,FALSE))!=0) goto error;
      }
    }
 
    if (s.format.startsWith("png"))
    {
      checkPngResult(s.output);
    }
  }
 
  // remove .dot files
  if (m_cleanUp)
  {
    //printf("removing dot file %s\n",qPrint(m_file));
    Portable::unlink(m_file);
  }
 
  // create checksum file
  if (!m_md5Hash.isEmpty())
  {
    QCString md5Name = getBaseNameOfOutput(m_file) + ".md5";
    FILE *f = Portable::fopen(md5Name,"w");
    if (f)
    {
      fwrite(m_md5Hash.data(),1,32,f);
      fclose(f);
    }
  }
  return TRUE;
error:
  err_full(srcFile,srcLine,"Problems running dot: exit code={}, command='{}', arguments='{}'",
    exitCode,m_dotExe,dotArgs);
  return FALSE;
}

References checkPngResult(), Config_getBool, err_full, FALSE, Portable::fopen(), getBaseNameOfOutput(), m_cleanUp, m_dotExe, m_file, m_jobs, m_md5Hash, MAX_LATEX_GRAPH_SIZE, readBoundingBox(), resetPDFSize(), Portable::system(), TRUE, and Portable::unlink().

Referenced by DotManager::run(), writeDotGraphFromFile(), and writeDotImageMapFromFile().

Member Data Documentation

m_cleanUp

bool DotRunner::m_cleanUp

private

Definition at line 67 of file dotrunner.h.

Referenced by DotRunner(), preventCleanUp(), and run().

m_dotExe

QCString DotRunner::m_dotExe

private

Definition at line 66 of file dotrunner.h.

Referenced by DotRunner(), and run().

m_file

QCString DotRunner::m_file

private

Definition at line 64 of file dotrunner.h.

Referenced by DotRunner(), and run().

m_jobs

std::vector<DotJob> DotRunner::m_jobs

private

Definition at line 68 of file dotrunner.h.

Referenced by addJob(), and run().

m_md5Hash

QCString DotRunner::m_md5Hash

private

Definition at line 65 of file dotrunner.h.

Referenced by DotRunner(), getMd5Hash(), and run().

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The documentation for this class was generated from the following files:

• src/dotrunner.h
• src/dotrunner.cpp