1 // Copyright (C) 2007-2016 CEA/DEN, EDF R&D, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License, or (at your option) any later version.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
23 #include "MED_Factory.hxx"
24 #include "MED_Utilities.hxx"
25 #include "MED_Wrapper.hxx"
39 #include <utilities.h>
45 // -------------------------------------------------------------------------------------------------------------------
46 // --- MED file compatibility: write using a lower major version implies append on an empty file of the target version
48 #define MED_MAJOR_EXPECTED 4
49 #define MED_MINOR_EXPECTED 0
50 #if MED_MAJOR_NUM != MED_MAJOR_EXPECTED
51 #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"
53 #if MED_MINOR_NUM != MED_MINOR_EXPECTED
54 #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"
56 #define MED_VERSIONS_APPEND_COMPATIBLE {40, 32, 33} // --- 10*major + minor (the 3rd digit, release, is not used here,
57 // med uses always the latest available)
58 // --- The first in the list should be the default: current version
59 // --- empty med file content for the different MED versions with a different major.
60 // ==> correct accordingly CreateEmptyMEDFile method below!
61 #define EMPTY_FILE_32 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62 #define EMPTY_FILE_33 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63 //bytes hexa representation of MED file built in Python
64 //# -----------------------------
65 //f= open('vide_321.med', 'rb')
76 //# -----------------------------
78 //! internal use: fileName and version must be checked before call
79 bool CreateEmptyMEDFile(const std::string& fileName, int version)
81 MESSAGE("copy an empty existing med file of the right version, for append" << version);
82 static const unsigned char empty_32[] = EMPTY_FILE_32;
83 static const unsigned char empty_33[] = EMPTY_FILE_33;
84 std::ofstream ofs(fileName);
86 ofs.write(reinterpret_cast<const char *>(empty_32),sizeof(empty_32));
87 else if (version == 33)
88 ofs.write(reinterpret_cast<const char *>(empty_33),sizeof(empty_33));
91 // -------------------------------------------------------------------------------------------------------------------
95 bool exists(const std::string& fileName)
99 size_t length = strlen(fileName.c_str()) + sizeof(char);
100 wchar_t* path = new wchar_t[length];
101 memset(path, '\0', length);
102 mbstowcs(path, fileName.c_str(), length);
104 cosnt char* path = xmlPath.c_str();
106 return (GetFileAttributes(path) != INVALID_FILE_ATTRIBUTES);
108 return (access(fileName.c_str(), F_OK) == 0);
113 * Return the list of med versions compatibles for write/append,
114 * encoded in 10*major+minor (for instance, code for med 3.2.1 is 32)
116 std::vector<int> GetMEDVersionsAppendCompatible()
118 int mvok[] = MED_VERSIONS_APPEND_COMPATIBLE;
119 std::vector<int> MEDVersionsOK(mvok, mvok + sizeof(mvok)/sizeof(int));
120 return MEDVersionsOK;
124 * \brief: Check read or write(append) Compatibility of a med file
125 * \param [in] : fileName - the file to read or to append to
126 * \param [in] : isforAppend - when true, check if the med file version is OK to append a mesh,
127 * when false, check if the med file is readable.
129 bool CheckCompatibility(const std::string& fileName, bool isForAppend)
132 int medVersionsOK[] = MED_VERSIONS_APPEND_COMPATIBLE;
133 // check that file is accessible
134 if ( exists(fileName) ) {
135 // check HDF5 && MED compatibility
136 med_bool hdfok, medok;
137 med_err r0 = MEDfileCompatibility(fileName.c_str(), &hdfok, &medok);
138 MESSAGE(r0 << " " << hdfok << " " << medok);
139 if ( r0==0 && hdfok && medok ) {
140 med_idt aFid = MEDfileOpen(fileName.c_str(), MED_ACC_RDONLY);
142 med_int major, minor, release;
143 med_err ret = MEDfileNumVersionRd(aFid, &major, &minor, &release);
144 MESSAGE(ret << " " << major << "." << minor << "." << release);
146 bool isReadOnly = !isForAppend;
150 int medVersion = 10*major + minor;
151 for (int ii=0; ii < sizeof(medVersionsOK)/sizeof(int); ii++)
152 if (medVersionsOK[ii] == medVersion) {
165 bool GetMEDVersion(const std::string& fileName, int& major, int& minor, int& release)
168 major = minor = release = 0;
169 med_idt aFid = MEDfileOpen(fileName.c_str(), MED_ACC_RDONLY);
171 med_int _major, _minor, _release;
172 med_err ret = MEDfileNumVersionRd(aFid, &_major, &_minor, &_release);
184 std::string GetMEDVersion(const std::string& fileName)
187 int major, minor, release;
188 if (GetMEDVersion(fileName, major, minor, release)) {
189 std::ostringstream os;
190 os << major << "." << minor << "." << release;
196 PWrapper CrWrapperR(const std::string& fileName)
198 if (!CheckCompatibility(fileName)) {
199 EXCEPTION(std::runtime_error, "Cannot open file '"<<fileName<<"'.");
201 return new MED::TWrapper(fileName);
204 PWrapper CrWrapperW(const std::string& fileName, int theVersion)
206 bool isCreated = false;
207 if (!CheckCompatibility(fileName, true))
209 remove(fileName.c_str());
215 med_int wantedMajor = MED_MAJOR_NUM;
216 med_int wantedMinor = MED_MINOR_NUM;
219 wantedMajor = theVersion/10;
220 wantedMinor = theVersion%10;
222 if (wantedMajor == MED_MAJOR_NUM) // the med file will be actually created
224 if (wantedMinor < MED_MINOR_NUM)
227 else // an empty existing med file of the right version will be used for append
229 int medVersionsOK[] = MED_VERSIONS_APPEND_COMPATIBLE;
230 bool isVersionOK = false;
231 for (int ii=0; ii < sizeof(medVersionsOK)/sizeof(int); ii++)
232 if (medVersionsOK[ii] == theVersion)
237 if (isVersionOK) // copy an empty existing med file of the right version, for append
238 CreateEmptyMEDFile(fileName, theVersion);
241 return new MED::TWrapper(fileName, minor);