-// Copyright (C) 2007-2016 CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2020 CEA/DEN, EDF R&D, OPEN CASCADE
//
// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
#include "MED_Utilities.hxx"
#include "MED_Wrapper.hxx"
+#include <Basics_Utils.hxx>
+
#include <stdio.h>
#include <errno.h>
#include <sstream>
+#include <fstream>
#include <med.h>
extern "C"
#include <windows.h>
#endif
+// -------------------------------------------------------------------------------------------------------------------
+// --- MED file compatibility: write using a lower major version implies append on an empty file of the target version
+//
+// *******************************************************************************************************************
+// ==> This file must be modified when MED version changes:
+// MED_MAJOR_NUM and MED_MINOR_NUM are defined in an external include from MED prerequisite: med.h
+// When MED_MAJOR_NUM or MED_MINOR_NUM changes, MED_MAJOR_EXPECTED and MED_MINOR_EXPECTED must be set accordingly
+// and MED_VERSIONS_APPEND_COMPATIBLE must be updated: The lower compatible versions may change with a new MED version
+// If the major version of MED change (for instance 4 --> 5) and if MED allows to append meshes in MED-4.x format,
+// Empty file content for MED-4.x should be provided (EMPTY_FILE_4x) and method CreateEmptyMEDFile should be updated.
+// *******************************************************************************************************************
+
+#define MED_MAJOR_EXPECTED 4
+#define MED_MINOR_EXPECTED 1
+#if MED_MAJOR_NUM != MED_MAJOR_EXPECTED
+ #error "MED major version does not correspond to the expected version, fix the minor and major compatibility values in CheckCompatibility method (MED_VERSIONS_APPEND_COMPATIBLE) and set the correct expected version (MED_MAJOR_EXPECTED, MED_MINOR_EXPECTED)"
+#endif
+#if MED_MINOR_NUM != MED_MINOR_EXPECTED
+ #error "MED minor version does not correspond to the expected version, fix the minor and major compatibility values in CheckCompatibility method (MED_VERSIONS_APPEND_COMPATIBLE) and set the correct expected version above (MED_MAJOR_EXPECTED, MED_MINOR_EXPECTED)"
+#endif
+#define MED_VERSIONS_APPEND_COMPATIBLE {41, 40, 32, 33} // --- 10*major + minor (the 3rd digit, release, is not used here,
+ // med uses always the latest available)
+ // --- The first in the list should be the default: current version
namespace MED
{
{
#ifdef WIN32
#ifdef UNICODE
- size_t length = strlen(fileName.c_str()) + sizeof(char);
- wchar_t* path = new wchar_t[length];
- memset(path, '\0', length);
- mbstowcs(path, fileName.c_str(), length);
+ int size_needed = MultiByteToWideChar(CP_UTF8, 0, fileName.c_str(), strlen(fileName.c_str()), NULL, 0);
+ wchar_t* path = new wchar_t[size_needed + 1];
+ MultiByteToWideChar(CP_UTF8, 0, fileName.c_str(), strlen(fileName.c_str()), path, size_needed);
+ path[size_needed] = '\0';
#else
- cosnt char* path = xmlPath.c_str();
+ cosnt char* path = xmlPath.c_str();
#endif
- bool res = (GetFileAttributes(path) != INVALID_FILE_ATTRIBUTES);
+ bool res = (GetFileAttributes(path) != INVALID_FILE_ATTRIBUTES);
#ifdef UNICODE
- delete path;
+ delete path;
#endif
- return res;
+ return res;
#else
return (access(fileName.c_str(), F_OK) == 0);
#endif
}
+ /*!
+ * Return the list of med versions compatibles for write/append,
+ * encoded in 10*major+minor (for instance, code for med 3.2.1 is 32)
+ */
+ std::vector<int> GetMEDVersionsAppendCompatible()
+ {
+ int mvok[] = MED_VERSIONS_APPEND_COMPATIBLE;
+ std::vector<int> MEDVersionsOK(mvok, mvok + sizeof(mvok)/sizeof(int));
+ int curVersion = MED_MAJOR_NUM * 10 + MED_MINOR_NUM;
+ if ( MEDVersionsOK[0] != curVersion )
+ MEDVersionsOK.insert( MEDVersionsOK.begin(), curVersion );
+ return MEDVersionsOK;
+ }
+
+ /*!
+ * \brief: Check read or write(append) Compatibility of a med file
+ * \param [in] : fileName - the file to read or to append to
+ * \param [in] : isforAppend - when true, check if the med file version is OK to append a mesh,
+ * when false, check if the med file is readable.
+ */
bool CheckCompatibility(const std::string& fileName, bool isForAppend)
{
bool ok = false;
+ std::vector<int> medVersionsOK = GetMEDVersionsAppendCompatible();
// check that file is accessible
if ( exists(fileName) ) {
// check HDF5 && MED compatibility
med_bool hdfok, medok;
med_err r0 = MEDfileCompatibility(fileName.c_str(), &hdfok, &medok);
- //MESSAGE(r0 << " " << hdfok << " " << medok);
+ MESSAGE(r0 << " " << hdfok << " " << medok);
if ( r0==0 && hdfok && medok ) {
med_idt aFid = MEDfileOpen(fileName.c_str(), MED_ACC_RDONLY);
if (aFid >= 0) {
med_int major, minor, release;
med_err ret = MEDfileNumVersionRd(aFid, &major, &minor, &release);
- //MESSAGE(ret << " " << major << "." << minor << "." << release);
+ MESSAGE(ret << " " << major << "." << minor << "." << release);
if (ret >= 0) {
bool isReadOnly = !isForAppend;
- if ( isReadOnly || ((major == MED_MAJOR_NUM) && (minor == MED_MINOR_NUM)))
+ if (isReadOnly)
ok = true;
+ else {
+ int medVersion = 10*major + minor;
+ for (size_t ii=0; ii < medVersionsOK.size(); ii++)
+ if (medVersionsOK[ii] == medVersion) {
+ ok =true;
+ break;
+ }
+ }
}
}
MEDfileClose(aFid);
if (!CheckCompatibility(fileName)) {
EXCEPTION(std::runtime_error, "Cannot open file '"<<fileName<<"'.");
}
- return new MED::TWrapper(fileName);
+ return new MED::TWrapper(fileName, false);
}
- PWrapper CrWrapperW(const std::string& fileName, int theMinor)
+ PWrapper CrWrapperW(const std::string& fileName, int theVersion)
{
+ bool isCreated = false;
if (!CheckCompatibility(fileName, true))
+ {
remove(fileName.c_str());
- return new MED::TWrapper(fileName, theMinor);
+ isCreated = true;
+ }
+ med_int wantedMajor = MED_MAJOR_NUM;
+ med_int wantedMinor = MED_MINOR_NUM;
+ // when non managed version of file is requested : ignore it and take the latest version
+ std::vector<int> versionsOK(GetMEDVersionsAppendCompatible());
+ bool isVersionRequestedOK(std::find(versionsOK.begin(),versionsOK.end(),theVersion)!=versionsOK.end());
+ if (isCreated && isVersionRequestedOK)
+ {
+ wantedMajor = theVersion/10;
+ wantedMinor = theVersion%10;
+ }
+ return new MED::TWrapper(fileName, true, wantedMajor, wantedMinor);
}
}
