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Diffstat (limited to 'c++/src/H5File.cpp')
| -rw-r--r-- | c++/src/H5File.cpp | 474 |
1 files changed, 474 insertions, 0 deletions
diff --git a/c++/src/H5File.cpp b/c++/src/H5File.cpp new file mode 100644 index 0000000..1ccea96 --- /dev/null +++ b/c++/src/H5File.cpp @@ -0,0 +1,474 @@ +#include <string> + +#include "H5Include.h" +#include "H5RefCounter.h" +#include "H5Exception.h" +#include "H5IdComponent.h" +#include "H5Idtemplates.h" +#include "H5PropList.h" +#include "H5Object.h" +#include "H5FaccProp.h" +#include "H5FcreatProp.h" +#include "H5DxferProp.h" +#include "H5DcreatProp.h" +#include "H5Group.h" +#include "H5AbstractDs.h" +#include "H5DataSpace.h" +#include "H5DataSet.h" +#include "H5File.h" +#include "H5Alltypes.h" +#include "H5CommonFG.h" + +#ifndef H5_NO_NAMESPACE +namespace H5 { +#endif + +// Creates or opens an HDF5 file depending on the parameter flags. +H5File::H5File( const string& name, unsigned int flags, const FileCreatPropList& create_plist, const FileAccPropList& access_plist ) : IdComponent() +{ + getFile( name.c_str(), flags, create_plist, access_plist ); +} + +H5File::H5File( const char* name, unsigned int flags, const FileCreatPropList& create_plist, const FileAccPropList& access_plist ) : IdComponent() +{ + getFile( name, flags, create_plist, access_plist ); +} + +// This function is private and contains common code between the +// constructors taking a string or a char* +void H5File::getFile( const char* name, unsigned int flags, const FileCreatPropList& create_plist, const FileAccPropList& access_plist ) +{ + // These bits only set for creation, so if any of them are set, + // create the file. + if( flags & (H5F_ACC_EXCL|H5F_ACC_TRUNC|H5F_ACC_DEBUG )) + { + hid_t create_plist_id = create_plist.getId(); + hid_t access_plist_id = access_plist.getId(); + id = H5Fcreate( name, flags, create_plist_id, access_plist_id ); + } + // Open the file if none of the bits above are set. + else + { + // use create_plist for access plist because of the default argument + hid_t access_plist_id = create_plist.getId(); + id = H5Fopen( name, flags, access_plist_id ); + } + + if( id <= 0 ) // throw an exception when open/create fail + { + throw FileIException(); + } +} + +// Copy constructor: makes a copy of the original H5File object. +H5File::H5File( const H5File& original ) : IdComponent( original ) {} + +// Determines whether a file specified by its name in HDF5 format +bool H5File::isHdf5(const string& name ) +{ + return( isHdf5( name.c_str()) ); +} +bool H5File::isHdf5(const char* name ) +{ + // Calls C routine H5Fis_hdf5 to determine whether the file is in + // HDF5 format. It returns positive value, 0, or negative value + htri_t ret_value = H5Fis_hdf5( name ); + if( ret_value > 0 ) + return true; + else if( ret_value == 0 ) + return false; + else // Raise exception when H5Fis_hdf5 returns a negative value + { + throw FileIException(); + } +} + +// Reopens this file +void H5File::reopen() +{ + // reset the identifier of this H5File - send 'this' in so that + // H5Fclose can be called appropriately + resetIdComponent( this ); + + // call C routine to reopen the file - Note: not sure about this + // does id need to be closed later? which id to be the parameter? + id = H5Freopen( id ); + if( id <= 0 ) // Raise exception when H5Freopen returns a neg value + { + throw FileIException(); + } +} + +// Creates a new group in this file using the template function provided +// in FGtemplates.h +Group H5File::createGroup( const string& name, size_t size_hint ) const +{ + return( createGroup( name.c_str(), size_hint )); +} + +Group H5File::createGroup( const char* name, size_t size_hint ) const +{ + try { + Group group = createGroupT( id, name, size_hint ); + return( group ); + } + catch( File_GroupException error ) + { + throw FileIException(); + } +} + +// Opens an existing group in this file using the template function provided +// in FGtemplates.h +Group H5File::openGroup( const string& name ) const +{ + return( openGroup( name.c_str() )); +} + +Group H5File::openGroup( const char* name ) const +{ + try { + Group group = openGroupT( id, name ); + return( group ); + } + catch( File_GroupException error ) + { + throw FileIException(); + } +} + +// Creates a dataset in this file using the template function +// provided in FGtemplates.h +DataSet H5File::createDataSet( const string& name, const DataType& data_type, const DataSpace& data_space, const DSetCreatPropList& create_plist ) const +{ + return( createDataSet( name.c_str(), data_type, data_space, create_plist )); +} + +DataSet H5File::createDataSet( const char* name, const DataType& data_type, const DataSpace& data_space, const DSetCreatPropList& create_plist ) const +{ + try { + DataSet dataset = createDataSetT( id, name, data_type, data_space, create_plist ); + return( dataset ); + } + catch( File_GroupException error ) + { + throw FileIException(); + } +} + +// Opens an existing dataset in this file using the template function +// provided in FGtemplates.h +DataSet H5File::openDataSet( const string& name ) const +{ + return( openDataSet( name.c_str() )); +} + +DataSet H5File::openDataSet( const char* name ) const +{ + try { + DataSet dataset = openDataSetT( id, name ); + return( dataset ); + } + catch( File_GroupException error ) + { + throw FileIException(); + } +} + +// This private member function calls the C API H5Topen to open the +// named datatype in this file, and returns the datatype's identifier. +// The function is used by the functions openXxxType's below for +// opening the sub-types +hid_t H5File::p_openDataType( const char* name ) const +{ + // Call C function H5Topen to open the named datatype in this group, + // giving the group id + hid_t datatype_id = H5Topen( id, name ); + + // If the datatype id is valid, return it, otherwise, throw an exception. + if( datatype_id > 0 ) + return( datatype_id ); + else + { + throw FileIException(); + } +} + +// +// The following member functions use the private function +// p_openDataType to open a named datatype in this group +// + +// Opens the named generic datatype in this group. +DataType H5File::openDataType( const string& name ) const +{ + return( openDataType( name.c_str()) ); +} +DataType H5File::openDataType( const char* name ) const +{ + DataType data_type( p_openDataType( name )); + return( data_type ); +} + +// Opens the named enumeration datatype in this group. +EnumType H5File::openEnumType( const string& name ) const +{ + return( openEnumType( name.c_str()) ); +} +EnumType H5File::openEnumType( const char* name ) const +{ + EnumType enum_type( p_openDataType( name )); + return( enum_type ); +} + +// Opens the named compound datatype in this group. +CompType H5File::openCompType( const string& name ) const +{ + return( openCompType( name.c_str()) ); +} +CompType H5File::openCompType( const char* name ) const +{ + CompType comp_type( p_openDataType( name )); + return( comp_type ); +} + +// Opens the named integer datatype in this group. +IntType H5File::openIntType( const string& name ) const +{ + return( openIntType( name.c_str()) ); +} +IntType H5File::openIntType( const char* name ) const +{ + IntType int_type( p_openDataType( name )); + return( int_type ); +} + +// Opens the named floating-point datatype in this group. +FloatType H5File::openFloatType( const string& name ) const +{ + return( openFloatType( name.c_str()) ); +} +FloatType H5File::openFloatType( const char* name ) const +{ + FloatType float_type( p_openDataType( name )); + return( float_type ); +} + +// Opens the named string datatype of this group +StrType H5File::openStrType( const string& name ) const +{ + return( openStrType( name.c_str()) ); +} +StrType H5File::openStrType( const char* name ) const +{ + StrType str_type( p_openDataType( name )); + return( str_type ); +} + +// Returns the creation property list of this file +FileCreatPropList H5File::getCreatePlist() const +{ + hid_t create_plist_id = H5Fget_create_plist( id ); + + // if H5Fget_create_plist returns a valid id, create and return + // the FileCreatPropList object for this property list + if( create_plist_id > 0 ) + { + FileCreatPropList create_plist( create_plist_id ); + return( create_plist ); + } + else + { + throw FileIException(); + } +} + +// Returns the access property list of this file +FileAccPropList H5File::getAccessPlist() const +{ + hid_t access_plist_id = H5Fget_access_plist( id ); + + // if H5Fget_access_plist returns a valid id, create and return + // the FileAccPropList object for this property list + if( access_plist_id > 0 ) + { + FileAccPropList access_plist( access_plist_id ); + return access_plist; + } + else // Raise an exception + { + throw FileIException(); + } +} + +// Creates a link of the specified type from new_name to current_name; +// both names are interpreted relative to this file +void H5File::link( H5G_link_t link_type, const string& curr_name, const string& new_name ) const +{ + link( link_type, curr_name.c_str(), new_name.c_str() ); +} + +void H5File::link( H5G_link_t link_type, const char* curr_name, const char* new_name ) const +{ + try { + linkT( id, link_type, curr_name, new_name ); + } + catch( File_GroupException error ) { + throw FileIException(); + } +} + +// Removes the specified name from this file. +void H5File::unlink( const string& name ) const +{ + unlink( name.c_str()); +} + +void H5File::unlink( const char* name ) const +{ + try { + unlinkT( id, name ); + } + catch( File_GroupException error ) { + throw FileIException(); + } +} + +// Renames an object from this file. +void H5File::move( const string& src, const string& dst ) const +{ + move( src.c_str(), dst.c_str()); +} + +void H5File::move( const char* src, const char* dst ) const +{ + try { + moveT( id, src, dst ); + } + catch( File_GroupException error ) { + throw FileIException(); + } +} + +// Returns information about an object +void H5File::getObjinfo( const string& name, hbool_t follow_link, H5G_stat_t& statbuf ) const +{ + getObjinfo( name, follow_link, statbuf ); +} + +void H5File::getObjinfo( const char* name, hbool_t follow_link, H5G_stat_t& statbuf ) const +{ + try { + getObjinfoT( id, name, follow_link, statbuf ); + } + catch( File_GroupException error ) { + throw FileIException(); + } +} + +// Returns the name of the object that the symbolic link points to. +string H5File::getLinkval( const string& name, size_t size ) const +{ + return( getLinkval( name.c_str(), size )); +} + +string H5File::getLinkval( const char* name, size_t size ) const +{ + try { + string value = getLinkvalT( id, name, size ); + return( value ); + } + catch( File_GroupException error ) { + throw FileIException(); + } +} + +// Sets comment for specified object. +void H5File::setComment( const string& name, const string& comment ) const +{ + setComment( name.c_str(), comment.c_str()); +} + +void H5File::setComment( const char* name, const char* comment ) const +{ + try { + setCommentT( id, name, comment ); + } + catch( File_GroupException error ) { + throw FileIException(); + } +} + +// Retrieves comment for specified object +string H5File::getComment( const string& name, size_t bufsize ) const +{ + return( getComment( name.c_str(), bufsize )); +} + +string H5File::getComment( const char* name, size_t bufsize ) const +{ + try { + string comment = getCommentT( id, name, bufsize ); + return( comment ); + } + catch( File_GroupException error ) { + throw FileIException(); + } +} + +// Mounts the file 'child' onto this file +void H5File::mount( const string& name, H5File& child, PropList& mount_plist ) const +{ + mount( name.c_str(), child, mount_plist ); +} + +void H5File::mount( const char* name, H5File& child, PropList& mount_plist ) const +{ + try { + mountT( id, name, child.getId(), mount_plist ); + } + catch( File_GroupException error ) { + throw FileIException(); + } +} + +// Unmounts the file named 'name' from this parent file +void H5File::unmount( const string& name ) const +{ + unmount( name.c_str() ); +} + +void H5File::unmount( const char* name ) const +{ + try { + unmountT( id, name ); + } + catch( File_GroupException error ) { + throw FileIException(); + } +} + +// Calls the C API H5Fclose to close this file. Used by IdComponent::reset +void H5File::p_close() const +{ + herr_t ret_value = H5Fclose( id ); + if( ret_value < 0 ) + { + throw FileIException(); + } +} + +// The destructor of this instance calls IdComponent::reset to +// reset its identifier - no longer true +// Older compilers (baldric) don't support template member functions +// and IdComponent::reset is one; so at this time, the resetId is not +// a member function so it can be template to work around that problem. +H5File::~H5File() +{ + // The HDF5 file id will be closed properly + resetIdComponent( this ); +} + +#ifndef H5_NO_NAMESPACE +} // end namespace +#endif |