OpenFile.cpp

// Gmsh - Copyright (C) 1997-2017 C. Geuzaine, J.-F. Remacle
//
// See the LICENSE.txt file for license information. Please report all
// bugs and problems to the public mailing list <gmsh@onelab.info>.

#include <sstream>
#include <string.h>
#include "GmshConfig.h"
#if !defined(HAVE_NO_STDINT_H)
#include <stdint.h>
#elif defined(HAVE_NO_INTPTR_T)
typedef unsigned long intptr_t;
#endif
#include "GmshMessage.h"
#include "GmshIO.h"
#include "GModelIO_GEO.h"
#include "Options.h"
#include "GModel.h"
#include "Numeric.h"
#include "Context.h"
#include "OpenFile.h"
#include "CommandLine.h"
#include "OS.h"
#include "StringUtils.h"
#include "GeomMeshMatcher.h"
#include "Field.h"

#if defined(HAVE_POPPLER)
#include "gmshPopplerWrapper.h"
#endif

#if defined(HAVE_PARSER)
#include "Parser.h"
#include "FunctionManager.h"
#endif

#if defined(HAVE_MESH)
#include "HighOrder.h"
#endif

#if defined(HAVE_POST)
#include "PView.h"
#include "PViewData.h"
#include "PViewOptions.h"
#endif

#if defined(HAVE_FLTK)
#include <FL/fl_ask.H>
#include "FlGui.h"
#include "onelabGroup.h"
#include "graphicWindow.h"
#include "drawContext.h"
#include "ReadImg.h"
#endif

#if defined(HAVE_3M)
#include "3M.h"
#endif

#define SQU(a)      ((a)*(a))

static void FinishUpBoundingBox()
{
  double range[3];
  for(int i = 0; i < 3; i++)
    range[i] = CTX::instance()->max[i] - CTX::instance()->min[i];

  if(range[0] < CTX::instance()->geom.tolerance &&
     range[1] < CTX::instance()->geom.tolerance &&
     range[2] < CTX::instance()->geom.tolerance) {
    CTX::instance()->min[0] -= 1.; CTX::instance()->min[1] -= 1.;
    CTX::instance()->max[0] += 1.; CTX::instance()->max[1] += 1.;
  }
  else if(range[0] < CTX::instance()->geom.tolerance &&
          range[1] < CTX::instance()->geom.tolerance) {
    CTX::instance()->min[0] -= range[2]; CTX::instance()->min[1] -= range[2];
    CTX::instance()->max[0] += range[2]; CTX::instance()->max[1] += range[2];
  }
  else if(range[0] < CTX::instance()->geom.tolerance &&
          range[2] < CTX::instance()->geom.tolerance) {
    CTX::instance()->min[0] -= range[1]; CTX::instance()->max[0] += range[1];
  }
  else if(range[1] < CTX::instance()->geom.tolerance &&
          range[2] < CTX::instance()->geom.tolerance) {
    CTX::instance()->min[1] -= range[0]; CTX::instance()->max[1] += range[0];
  }
  else if(range[0] < CTX::instance()->geom.tolerance) {
    double l = sqrt(SQU(range[1]) + SQU(range[2]));
    CTX::instance()->min[0] -= l; CTX::instance()->max[0] += l;
  }
  else if(range[1] < CTX::instance()->geom.tolerance) {
    double l = sqrt(SQU(range[0]) + SQU(range[2]));
    CTX::instance()->min[1] -= l; CTX::instance()->max[1] += l;
  }

  CTX::instance()->lc = sqrt(SQU(CTX::instance()->max[0] - CTX::instance()->min[0]) +
                             SQU(CTX::instance()->max[1] - CTX::instance()->min[1]) +
                             SQU(CTX::instance()->max[2] - CTX::instance()->min[2]));
  for(int i = 0; i < 3; i++)
    CTX::instance()->cg[i] = 0.5 * (CTX::instance()->min[i] + CTX::instance()->max[i]);
}

void SetBoundingBox(double xmin, double xmax,
                    double ymin, double ymax,
                    double zmin, double zmax)
{
  CTX::instance()->min[0] = xmin; CTX::instance()->max[0] = xmax;
  CTX::instance()->min[1] = ymin; CTX::instance()->max[1] = ymax;
  CTX::instance()->min[2] = zmin; CTX::instance()->max[2] = zmax;
  FinishUpBoundingBox();
}

void SetBoundingBox(bool aroundVisible)
{
  if(CTX::instance()->forcedBBox) return;

  SBoundingBox3d bb = GModel::current()->bounds(aroundVisible);

#if defined(HAVE_POST)
  if(bb.empty()) {
    for(unsigned int i = 0; i < PView::list.size(); i++)
      if(!PView::list[i]->getData()->getBoundingBox().empty())
        if(!aroundVisible || PView::list[i]->getOptions()->visible)
          bb += PView::list[i]->getData()->getBoundingBox();
  }
#endif
  if(bb.empty()){
    bb += SPoint3(-1., -1., -1.);
    bb += SPoint3(1., 1., 1.);
  }

  CTX::instance()->min[0] = bb.min().x(); CTX::instance()->max[0] = bb.max().x();
  CTX::instance()->min[1] = bb.min().y(); CTX::instance()->max[1] = bb.max().y();
  CTX::instance()->min[2] = bb.min().z(); CTX::instance()->max[2] = bb.max().z();
  FinishUpBoundingBox();
}

// FIXME: this is necessary for now to have an approximate CTX::instance()->lc
// *while* parsing input files (it's important since some of the geometrical
// operations use a tolerance that depends on CTX::instance()->lc). This will be
// removed once the new database is filled directly during the parsing step
static SBoundingBox3d temp_bb;

void ResetTemporaryBoundingBox()
{
  temp_bb.reset();
}

void AddToTemporaryBoundingBox(double x, double y, double z)
{
  temp_bb += SPoint3(x, y, z);
  if(temp_bb.empty()) return;
  CTX::instance()->lc = sqrt(SQU(temp_bb.max().x() - temp_bb.min().x()) +
                             SQU(temp_bb.max().y() - temp_bb.min().y()) +
                             SQU(temp_bb.max().z() - temp_bb.min().z()));
  if(CTX::instance()->lc == 0) CTX::instance()->lc = 1.;
  // to get correct cg during interactive point creation
  for(int i = 0; i < 3; i++) CTX::instance()->cg[i] = temp_bb.center()[i];
}

static std::vector<gmshFILE> openedFiles;

int ParseFile(const std::string &fileName, bool close, bool warnIfMissing)
{
#if !defined(HAVE_PARSER)
  Msg::Error("Gmsh parser is not compiled in this version");
  return 0;
#else

  // add 'b' for pure Windows programs: opening in text mode messes up
  // fsetpos/fgetpos (used e.g. for user-defined functions)
  gmshFILE fp;
  if(!(fp = gmshopen(fileName.c_str(), "rb"))){
    if(warnIfMissing)
      Msg::Warning("Unable to open file '%s'", fileName.c_str());
    return 0;
  }

  Msg::AddOnelabStringChoice("Gmsh/}Input files", "file", fileName, true, true,
                             Msg::GetNumOnelabClients() > 1);

  //#if defined(HAVE_FLTK) && defined(HAVE_POST)
  // int numViewsBefore = PView::list.size();
  //#endif

  std::string old_yyname = gmsh_yyname;
  gmshFILE old_yyin = gmsh_yyin;
  int old_yyerrorstate = gmsh_yyerrorstate;
  int old_yylineno = gmsh_yylineno;
  int old_yyviewindex = gmsh_yyviewindex;

  gmsh_yyname = fileName;
  gmsh_yyin = fp;
  gmsh_yyerrorstate = 0;
  gmsh_yylineno = 1;
  gmsh_yyviewindex = 0;

  while(!gmsheof(gmsh_yyin)){
    gmsh_yyparse();
    if(gmsh_yyerrorstate > 20){
      if(gmsh_yyerrorstate != 999) // 999 is a volontary exit
        Msg::Error("Too many errors: aborting parser...");
      gmsh_yyflush();
      break;
    }
  }

  if(close){
    gmsh_yyflush();
    gmshclose(gmsh_yyin);
  }
  else{
    openedFiles.push_back(gmsh_yyin);
  }

  gmsh_yyname = old_yyname;
  gmsh_yyin = old_yyin;
  gmsh_yyerrorstate = old_yyerrorstate;
  gmsh_yylineno = old_yylineno;
  gmsh_yyviewindex = old_yyviewindex;

#if defined(HAVE_FLTK) && defined(HAVE_POST)
  if(FlGui::available()){
    // this is not enough if the script creates and deletes views
    //FlGui::instance()->updateViews(numViewsBefore != (int)PView::list.size(), false);
    FlGui::instance()->updateViews(true, false);
  }
#endif

  return 1;
#endif
}

static bool doSystemUncompress(std::string fileName, std::string noExt)
{
  std::ostringstream sstream;
  sstream << "File '"<< fileName << "' is in gzip format.\n\n"
          << "Do you want to uncompress it?";
  if(Msg::GetAnswer(sstream.str().c_str(), 0, "Cancel", "Uncompress")){
    if(SystemCall(std::string("gunzip -c ") + fileName + " > " + noExt, true))
      Msg::Warning("Potentially failed to uncompress `%s': check directory permissions",
                   fileName.c_str());
    GModel::current()->setFileName(noExt);
    return true;
  }
  return false;
}

void ParseString(const std::string &str, bool inCurrentModelDir)
{
  if(str.empty()) return;
  std::string fileName;
  if(inCurrentModelDir)
    fileName = FixRelativePath(GModel::current()->getFileName(),
                               CTX::instance()->tmpFileName);
  else
    fileName = CTX::instance()->homeDir + CTX::instance()->tmpFileName;
  FILE *fp = Fopen(fileName.c_str(), "w");
  if(fp){
    fprintf(fp, "%s\n", str.c_str());
    fclose(fp);
    GModel::readGEO(fileName);
    UnlinkFile(fileName);
  }
}

#if defined(HAVE_ONELAB)
static std::string getSolverForExtension(const std::string &ext)
{
  for(int i = 0; i < NUM_SOLVERS; i++){
    if(opt_solver_extension(i, GMSH_GET, "") == ext)
      return opt_solver_name(i, GMSH_GET, "");
  }
  return "";
}


static int defineSolver(const std::string &name)
{
  for(int i = 0; i < NUM_SOLVERS; i++){
    if(opt_solver_name(i, GMSH_GET, "") == name) return i;
  }
  // overwrite last one
  opt_solver_name(NUM_SOLVERS - 1, GMSH_SET|GMSH_GUI, name);
  return NUM_SOLVERS - 1;
}
#endif

int MergeFile(const std::string &fileName, bool warnIfMissing, bool setBoundingBox,
              bool importPhysicalsInOnelab)
{
  // added 'b' for pure Windows programs, since some of these files
  // contain binary data
  gmshFILE fp = gmshopen(fileName.c_str(), "rb");
  if(!fp){
    if(warnIfMissing)
      Msg::Warning("Unable to open file '%s'", fileName.c_str());
    return 0;
  }

  char header[256];
  if(!gmshgets(header, sizeof(header), fp)){ gmshclose(fp); return 0; }
  gmshclose(fp);

  Msg::StatusBar(true, "Reading '%s'...", fileName.c_str());

  Msg::AddOnelabStringChoice("Gmsh/}Input files", "file", fileName, true, true,
                             Msg::GetNumOnelabClients() > 1);

  std::vector<std::string> split = SplitFileName(fileName);
  std::string noExt = split[0] + split[1], ext = split[2];

  if(ext == ".gz") {
#if defined(HAVE_COMPRESSED_IO) && defined(HAVE_LIBZ)
    std::vector<std::string> subsplit = SplitFileName(noExt);
    ext = subsplit[2];
    if(ext != ".geo" && ext != ".GEO" &&
       ext != ".unv" && ext != ".UNV"){
      if(doSystemUncompress(fileName, noExt))
        return MergeFile(noExt, false);
    }
#else
    if(doSystemUncompress(fileName, noExt))
      return MergeFile(noExt, false);
#endif
  }

  // force reading msh file even if wrong extension if the header
  // matches
  // if(!strncmp(header, "$MeshFormat", 11)) ext = "";

  CTX::instance()->geom.draw = 0; // don't try to draw the model while reading

#if defined(HAVE_FLTK) && defined(HAVE_POST)
  int numViewsBefore = PView::list.size();
#endif

  int status = 0;

#if defined(HAVE_ONELAB)
  std::string solver = getSolverForExtension(ext);
  if(solver.size()){
    int num = defineSolver(solver);
    Msg::SetOnelabString(solver + "/Model name", fileName, true, true,
                         false, 3, "file");
    if(GModel::current()->getName() == "" ||
       Msg::GetOnelabString("Gmsh/Model name").empty()){
      GModel::current()->setFileName(split[0] + split[1] + ".geo");
      GModel::current()->setName(split[1] + ".geo");
      Msg::SetOnelabChanged(3);
    }
    CTX::instance()->launchSolverAtStartup = num;
    CTX::instance()->geom.draw = 1;
    return 1;
  }
  else if(ext == ".py" || ext == ".PY" ||
          ext == ".m" || ext == ".M" ||
          ext == ".exe" || ext == ".EXE"){
    int num = defineSolver(split[1]);
    opt_solver_executable(num, GMSH_SET, fileName);
    CTX::instance()->launchSolverAtStartup = num;
    CTX::instance()->geom.draw = 1;
    return 1;
  }
#endif

  if(GModel::current()->getName() == ""){
    GModel::current()->setFileName(fileName);
    GModel::current()->setName(SplitFileName(fileName)[1]);
  }

  if(ext == ".stl" || ext == ".STL"){
    status = GModel::current()->readSTL(fileName, CTX::instance()->geom.tolerance);
  }
  else if(ext == ".brep" || ext == ".rle" || ext == ".brp" || ext == ".BRP"){
    status = GModel::current()->readOCCBREP(fileName);
  }
  else if(ext == ".iges" || ext == ".IGES" || ext == ".igs" || ext == ".IGS"){
    status = GModel::current()->readOCCIGES(fileName);
  }
  else if(ext == ".step" || ext == ".STEP" || ext == ".stp" || ext == ".STP"){
    status = GModel::current()->readOCCSTEP(fileName);
  }
  else if(ext == ".sat" || ext == ".SAT"){
    status = GModel::current()->readACISSAT(fileName);
  }
  else if(ext == ".unv" || ext == ".UNV"){
    status = GModel::current()->readUNV(fileName);
  }
  else if(ext == ".vtk" || ext == ".VTK"){
    status = GModel::current()->readVTK(fileName, CTX::instance()->bigEndian);
  }
  else if(ext == ".wrl" || ext == ".WRL" || ext == ".vrml" || ext == ".VRML" ||
          ext == ".iv" || ext == ".IV"){
    status = GModel::current()->readVRML(fileName);
  }
  else if(ext == ".mesh" || ext == ".MESH"){
    status = GModel::current()->readMESH(fileName);
  }
  else if(ext == ".diff" || ext == ".DIFF"){
    status = GModel::current()->readDIFF(fileName);
  }
  else if(ext == ".med" || ext == ".MED" || ext == ".mmed" || ext == ".MMED" ||
          ext == ".rmed" || ext == ".RMED"){
    status = GModel::readMED(fileName);
#if defined(HAVE_POST)
    if(status > 1) status = PView::readMED(fileName);
#endif
  }
  else if(ext == ".bdf" || ext == ".BDF" || ext == ".nas" || ext == ".NAS"){
    status = GModel::current()->readBDF(fileName);
  }
  else if(ext == ".dat" || ext == ".DAT"){
    if(!strncmp(header, "BEGIN ACTRAN", 12))
      status = GModel::current()->readACTRAN(fileName);
    else
      status = GModel::current()->readBDF(fileName);
  }
  else if(ext == ".p3d" || ext == ".P3D"){
    status = GModel::current()->readP3D(fileName);
  }
  else if(ext == ".fm" || ext == ".FM") {
    status = GModel::current()->readFourier(fileName);
  }
#if defined(HAVE_FLTK)
  else if(ext == ".pnm" || ext == ".PNM" || ext == ".pbm" || ext == ".PBM" ||
          ext == ".pgm" || ext == ".PGM" || ext == ".ppm" || ext == ".PPM") {
    status = read_pnm(fileName);
  }
  else if(ext == ".bmp" || ext == ".BMP") {
    status = read_bmp(fileName);
  }
#if defined(HAVE_LIBJPEG)
  else if(ext == ".jpg" || ext == ".JPG" || ext == ".jpeg" || ext == ".JPEG") {
    status = read_jpeg(fileName);
  }
#endif
#if defined(HAVE_LIBPNG)
  else if(ext == ".png" || ext == ".PNG") {
    status = read_png(fileName);
  }
#endif
#endif
  else if(ext == ".ply2" || ext == ".PLY2"){
    status = GModel::current()->readPLY2(fileName);
  }
  else if(ext == ".ply" || ext == ".PLY"){
    status = GModel::current()->readPLY(fileName);
  }
  else if(ext == ".geom" || ext == ".GEOM"){
    status = GModel::current()->readGEOM(fileName);
  }
#if defined(HAVE_LIBCGNS)
  else if(ext == ".cgns" || ext == ".CGNS"){
    status = GModel::current()->readCGNS(fileName);
  }
#endif
#if defined(HAVE_3M)
  else if(ext == ".csv"){
    status = readFile3M(fileName);
  }
#endif
  else {
    CTX::instance()->geom.draw = 1;
    if(!strncmp(header, "$PTS", 4) || !strncmp(header, "$NO", 3) ||
       !strncmp(header, "$PARA", 5) || !strncmp(header, "$ELM", 4) ||
       !strncmp(header, "$MeshFormat", 11) || !strncmp(header, "$Comments", 9)) {
      // mesh matcher
      if(CTX::instance()->geom.matchGeomAndMesh && !GModel::current()->empty()) {
        GModel* tmp2 = GModel::current();
        GModel* tmp = new GModel();
        tmp->readMSH(fileName);
        status = GeomMeshMatcher::instance()->match(tmp2, tmp);
        delete tmp;
        GModel::setCurrent(tmp2);
        tmp2->setVisibility(1);
      }
      else
        status = GModel::current()->readMSH(fileName);
#if defined(HAVE_POST)
      if(status > 1) status = PView::readMSH(fileName);
#endif
#if defined(HAVE_MESH)
      /*
      This was introduced in r6039 by Koen to snap high order vertices on the
      geometry. But it introduces subtle bugs when reading high-order
      post-processing views ; we should have an explicit command to do this, and
      not modify the mesh without warning just by reading a file --CG.

      if(CTX::instance()->mesh.order > 1)
        SetOrderN(GModel::current(), CTX::instance()->mesh.order,
                  CTX::instance()->mesh.secondOrderLinear,
                  CTX::instance()->mesh.secondOrderIncomplete);
      */
#endif
    }
#if defined(HAVE_POST)
    else if(!strncmp(header, "$PostFormat", 11) ||
            !strncmp(header, "$View", 5)) {
      status = PView::readPOS(fileName);
    }
#endif
    else {
      status = GModel::readGEO(fileName);
    }
  }

  GModel::current()->getGEOInternals()->setMaxTag
    (0, std::max(GModel::current()->getGEOInternals()->getMaxTag(0),
                 GModel::current()->getMaxElementaryNumber(0)));
  GModel::current()->getGEOInternals()->setMaxTag
    (1, std::max(GModel::current()->getGEOInternals()->getMaxTag(1),
                 GModel::current()->getMaxElementaryNumber(1)));
  GModel::current()->getGEOInternals()->setMaxTag
    (2, std::max(GModel::current()->getGEOInternals()->getMaxTag(2),
                 GModel::current()->getMaxElementaryNumber(2)));
  GModel::current()->getGEOInternals()->setMaxTag
    (3, std::max(GModel::current()->getGEOInternals()->getMaxTag(3),
                 GModel::current()->getMaxElementaryNumber(3)));

  if(setBoundingBox) SetBoundingBox();
  CTX::instance()->geom.draw = 1;
  CTX::instance()->mesh.changed = ENT_ALL;

  if(importPhysicalsInOnelab) Msg::ImportPhysicalGroupsInOnelab();

#if defined(HAVE_FLTK) && defined(HAVE_POST)
  if(FlGui::available()){
    // go directly to the first non-empty step after the one that is requested
    for(unsigned int i = numViewsBefore; i < PView::list.size(); i++)
      opt_view_timestep(i, GMSH_SET | GMSH_GUI,
                        PView::list[i]->getData()->getFirstNonEmptyTimeStep
                        (opt_view_timestep(i, GMSH_GET, 0)));
    FlGui::instance()->updateViews(numViewsBefore != (int)PView::list.size(), false);
  }
#endif

  if(!status) Msg::Error("Error loading '%s'", fileName.c_str());
  Msg::StatusBar(true, "Done reading '%s'", fileName.c_str());

  CTX::instance()->fileread = true;

  // merge the associated option file if there is one
  if(!StatFile(fileName + ".opt"))
    MergeFile(fileName + ".opt");
  return status;
}

int MergePostProcessingFile(const std::string &fileName, int showViews,
                            bool showLastStep, bool warnIfMissing)
{
#if defined(HAVE_POST)
  // check if there is a mesh in the file
  FILE *fp = Fopen(fileName.c_str(), "rb");
  if(!fp){
    if(warnIfMissing) Msg::Warning("Unable to open file '%s'", fileName.c_str());
    return 0;
  }
  char header[256];
  if(!fgets(header, sizeof(header), fp)){ fclose(fp); return 0; }
  bool haveMesh = false;
  if(!strncmp(header, "$MeshFormat", 11)){
    while(!feof(fp) && fgets(header, sizeof(header), fp)){
      if(!strncmp(header, "$Nodes", 6)){
        haveMesh = true;
        break;
      }
      else if(!strncmp(header, "$NodeData", 9) ||
              !strncmp(header, "$ElementData", 12) ||
              !strncmp(header, "$ElementNodeData", 16)){
        break;
      }
    }
  }
  fclose(fp);

  // store old step values
  unsigned int n = PView::list.size();
  std::vector<int> steps(n, 0);
  if(showLastStep){
    for(unsigned int i = 0; i < PView::list.size(); i++)
      steps[i] = (int)opt_view_nb_timestep(i, GMSH_GET, 0);
  }

  // if there is a mesh, create a new model to store it (don't merge elements in
  // the current mesh!)
  GModel *old = GModel::current();
  if(haveMesh){
    GModel *m = new GModel();
    GModel::setCurrent(m);
  }
  // FIXME: disabled onelab physical group import for now, as the number of
  // groups in mesh-based post-pro files can be different from the # in the
  // model, which will trigger setChanged(Gmsh), leading undesirable remeshing
  int ret = MergeFile(fileName, warnIfMissing, old->bounds().empty() ? true : false, false);
  GModel::setCurrent(old);
  old->setVisibility(1);

  // hide everything except the onelab X-Y graphs
  if(showViews == 0){
    for(unsigned int i = 0; i < PView::list.size(); i++){
      if(PView::list[i]->getData()->getFileName().substr(0, 6) != "ONELAB")
        PView::list[i]->getOptions()->visible = 0;
    }
  }
  else if(showViews == 2 && n < PView::list.size()){
    // if we created new views, assume we only want to see those (and the
    // onelab X-Y graphs)
    for(unsigned int i = 0; i < n; i++){
      if(PView::list[i]->getData()->getFileName().substr(0, 6) != "ONELAB")
        PView::list[i]->getOptions()->visible = 0;
    }
  }

  // if we added steps, and we have more than 2 (to avoid always showing the
  // imaginary part for complex fields), go to the last one
  if(showLastStep){
    steps.resize(PView::list.size(), 0);
    for(unsigned int i = 0; i < PView::list.size(); i++){
      int step = (int)opt_view_nb_timestep(i, GMSH_GET, 0);
      if(step > steps[i] && steps[i] > 1)
        opt_view_timestep(i, GMSH_SET|GMSH_GUI, step - 1);
    }
  }

  return ret;
#else
  return 0;
#endif
}

void ClearProject()
{
  Msg::Info("Clearing all models and views...");
#if defined(HAVE_POST)
  for(int i = PView::list.size() - 1; i >= 0; i--)
    delete PView::list[i];
#endif
#if defined(HAVE_PARSER)
  gmsh_yysymbols.clear();
  gmsh_yystringsymbols.clear();
  gmsh_yyfactory.clear();
  gmsh_yynamespaces.clear();
#endif
  for(int i = GModel::list.size() - 1; i >= 0; i--)
    delete GModel::list[i];

  // close the files that might have been left open by ParseFile
  if(openedFiles.size()){
    for(unsigned int i = 0; i < openedFiles.size(); i++)
      gmshclose(openedFiles[i]);
    openedFiles.clear();
  }
  Msg::Info("Done clearing all models and views");

  new GModel();
  std::string base = (getenv("PWD") ? "" : CTX::instance()->homeDir);
  GModel::current()->setFileName(base + CTX::instance()->defaultFileName);
  GModel::current()->setName("");
#if defined(HAVE_FLTK)
  if(FlGui::available()){
    FlGui::instance()->resetVisibility();
    FlGui::instance()->updateViews(true, true);
    FlGui::instance()->updateFields();
    GModel::current()->setSelection(0);
  }
#endif
  Msg::ResetErrorCounter();
}

void OpenProject(const std::string &fileName)
{
  if(CTX::instance()->lock) {
    Msg::Info("I'm busy! Ask me that later...");
    return;
  }
  CTX::instance()->lock = 1;

  Msg::ResetErrorCounter();

  if(GModel::current()->empty()){
    // if the current model is empty, make sure it's reaaally cleaned-up, and
    // reuse it
    GModel::current()->destroy();
    GModel::current()->getGEOInternals()->destroy();
  }
  else{
    // if the current model is not empty make it invisible and add a new model
    new GModel();
    GModel::current(GModel::list.size() - 1);
  }

  // clear parser variables, but keep -setnumber/-setstrings command line
  // definitions
#if defined(HAVE_PARSER)
  gmsh_yysymbols.clear();
  gmsh_yystringsymbols.clear();
  std::map<std::string, std::vector<double> > cln(Msg::GetCommandLineNumbers());
  for(std::map<std::string, std::vector<double> >::iterator it = cln.begin();
      it != cln.end(); it++)
    gmsh_yysymbols[it->first].value = it->second;
  std::map<std::string, std::string> cls(Msg::GetCommandLineStrings());
  for(std::map<std::string, std::string>::iterator it = cls.begin();
      it != cls.end(); it++)
    gmsh_yystringsymbols[it->first] = std::vector<std::string>(1, it->second);
  gmsh_yyfactory.clear();
  gmsh_yynamespaces.clear();
  FunctionManager::Instance()->clear();
#endif

  // temporary hack until we fill the current GModel on the fly during parsing
  ResetTemporaryBoundingBox();

  // merge the file
  MergeFile(fileName, false);

  // fill recent opened file list
  std::vector<std::string> tmp = CTX::instance()->recentFiles;
  CTX::instance()->recentFiles.clear();
  CTX::instance()->recentFiles.push_back(fileName);
  for(unsigned int i = 0; i < tmp.size(); i++){
    if(tmp[i] != fileName)
      CTX::instance()->recentFiles.push_back(tmp[i]);
  }
  CTX::instance()->recentFiles.resize(10);
#if defined(HAVE_FLTK)
  if(FlGui::available())
    FlGui::instance()->graph[0]->fillRecentHistoryMenu();
#endif

  // close the files that might have been left open by ParseFile
  if(openedFiles.size()){
    for(unsigned int i = 0; i < openedFiles.size(); i++)
      gmshclose(openedFiles[i]);
    openedFiles.clear();
  }

  CTX::instance()->lock = 0;

#if defined(HAVE_FLTK)
  if(FlGui::available()){
    file_watch_cb(0, 0);
    FlGui::instance()->resetVisibility();
    FlGui::instance()->updateViews(true, false);
    FlGui::instance()->updateFields();
    GModel::current()->setSelection(0);
    GModel::current()->setCompoundVisibility();
  }
#endif
}

void OpenProjectMacFinder(const char *fileName)
{
#if defined(HAVE_FLTK)
  if(!FlGui::available()){
    // Gmsh is not ready: will open the file later
    FlGui::setOpenedThroughMacFinder(fileName);
  }
  else if(FlGui::available()){
    // Gmsh is running
    OpenProject(fileName);
    drawContext::global()->draw();
    if(CTX::instance()->launchSolverAtStartup >= 0)
      solver_cb(0, (void*)(intptr_t)CTX::instance()->launchSolverAtStartup);
  }
#endif
}