-// Copyright (C) 2007-2016 CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2019 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 <unistd.h>
#endif
}
+#include <utilities.h>
+
+#ifdef WIN32
+#include <windows.h>
+#endif
+
+// -------------------------------------------------------------------------------------------------------------------
+// --- MED file compatibility: write using a lower major version implies append on an empty file of the target version
+
+#define MED_MAJOR_EXPECTED 4
+#define MED_MINOR_EXPECTED 0
+#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"
+#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"
+#endif
+#define MED_VERSIONS_APPEND_COMPATIBLE {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
+// --- empty med file content for the different MED versions with a different major.
+// ==> correct accordingly CreateEmptyMEDFile method below!
+#define EMPTY_FILE_32 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+#define EMPTY_FILE_33 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+/* --- bytes hexa representation of MED file built in Python
+f= open('vide_321.med', 'rb')
+data=f.read()
+ba=bytearray(data)
+a=""
+for i in ba:
+ a+=hex(i)
+ a+=','
+print a
+*/
+
+//! internal use: fileName and version must be checked before call
+bool CreateEmptyMEDFile(const std::string& fileName, int version)
+{
+ MESSAGE("create an empty med file of the right version, for append " << version);
+ static const unsigned char empty_32[] = EMPTY_FILE_32;
+ static const unsigned char empty_33[] = EMPTY_FILE_33;
+#ifdef WIN32
+#ifdef UNICODE
+ std::wstring aFilename = Kernel_Utils::utf8_decode_s(fileName);
+#else
+ std::wstring aFilename = fileName;
+#endif
+ std::ofstream ofs(aFilename, std::ios::binary);
+#else
+ std::ofstream ofs(fileName);
+#endif
+ if (version == 32)
+ ofs.write(reinterpret_cast<const char *>(empty_32),sizeof(empty_32));
+ else if (version == 33)
+ ofs.write(reinterpret_cast<const char *>(empty_33),sizeof(empty_33));
+ ofs.flush();
+ ofs.close();
+ return true;
+}
+// -------------------------------------------------------------------------------------------------------------------
namespace MED
{
bool exists(const std::string& fileName)
{
#ifdef WIN32
- return (GetFileAttributes(xmlPath.c_str()) != INVALID_FILE_ATTRIBUTES);
+#ifdef UNICODE
+ 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();
+#endif
+ bool res = (GetFileAttributes(path) != INVALID_FILE_ATTRIBUTES);
+#ifdef UNICODE
+ delete path;
+#endif
+ return res;
#else
return (access(fileName.c_str(), F_OK) == 0);
#endif
}
- bool CheckCompatibility(const std::string& fileName)
+ /*!
+ * 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));
+ 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;
+ int medVersionsOK[] = MED_VERSIONS_APPEND_COMPATIBLE;
// check that file is accessible
if ( exists(fileName) ) {
// check HDF5 && MED compatibility
med_bool hdfok, medok;
- MEDfileCompatibility(fileName.c_str(), &hdfok, &medok);
- if ( hdfok && medok ) {
+ med_err r0 = MEDfileCompatibility(fileName.c_str(), &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);
if (ret >= 0) {
- int version = 100*major + minor;
- if (version >= 202)
+ bool isReadOnly = !isForAppend;
+ if (isReadOnly)
ok = true;
+ else {
+ int medVersion = 10*major + minor;
+ for (size_t ii=0; ii < sizeof(medVersionsOK)/sizeof(int); ii++)
+ if (medVersionsOK[ii] == medVersion) {
+ ok =true;
+ break;
+ }
+ }
}
}
MEDfileClose(aFid);
return new MED::TWrapper(fileName);
}
- PWrapper CrWrapperW(const std::string& fileName)
+ PWrapper CrWrapperW(const std::string& fileName, int theVersion)
{
- if (!CheckCompatibility(fileName))
+ bool isCreated = false;
+ if (!CheckCompatibility(fileName, true))
+ {
remove(fileName.c_str());
- return new MED::TWrapper(fileName);
+ isCreated = true;
+ }
+ int minor = -1;
+ if (isCreated)
+ {
+ med_int wantedMajor = MED_MAJOR_NUM;
+ med_int wantedMinor = MED_MINOR_NUM;
+ if (theVersion > 0)
+ {
+ wantedMajor = theVersion/10;
+ wantedMinor = theVersion%10;
+ }
+ if (wantedMajor == MED_MAJOR_NUM) // the med file will be actually created
+ {
+ if (wantedMinor < MED_MINOR_NUM)
+ minor = wantedMinor;
+ }
+ else // an empty existing med file of the right version will be used for append
+ {
+ int medVersionsOK[] = MED_VERSIONS_APPEND_COMPATIBLE;
+ bool isVersionOK = false;
+ for (size_t ii=0; ii < sizeof(medVersionsOK)/sizeof(int); ii++)
+ if (medVersionsOK[ii] == theVersion)
+ {
+ isVersionOK =true;
+ break;
+ }
+ if (isVersionOK) // copy an empty existing med file of the right version, for append
+ CreateEmptyMEDFile(fileName, theVersion);
+ }
+ }
+ return new MED::TWrapper(fileName, minor);
}
}
