diff options
Diffstat (limited to 'c++/src')
| -rw-r--r-- | c++/src/H5DxferProp.cpp | 129 | ||||
| -rw-r--r-- | c++/src/H5DxferProp.h | 13 | ||||
| -rw-r--r-- | c++/src/H5Location.cpp | 1 |
3 files changed, 141 insertions, 2 deletions
diff --git a/c++/src/H5DxferProp.cpp b/c++/src/H5DxferProp.cpp index bc3e0af..3379678 100644 --- a/c++/src/H5DxferProp.cpp +++ b/c++/src/H5DxferProp.cpp @@ -20,6 +20,17 @@ #include "H5IdComponent.h" #include "H5PropList.h" #include "H5DxferProp.h" +#include "H5private.h" // for HDmemset + +#include <iostream> + +#ifndef H5_NO_NAMESPACE +#ifndef H5_NO_STD + using std::cerr; + using std::endl; +#endif // H5_NO_STD +#endif + #ifndef H5_NO_NAMESPACE namespace H5 { @@ -39,6 +50,17 @@ const DSetMemXferPropList DSetMemXferPropList::DEFAULT; DSetMemXferPropList::DSetMemXferPropList() : PropList(H5P_DATASET_XFER) {} //-------------------------------------------------------------------------- +// Function DSetMemXferPropList constructor +///\brief Creates a dataset transfer property list with transform +/// expression. +// Programmer: Binh-Minh Ribler - 2000 +//-------------------------------------------------------------------------- +DSetMemXferPropList::DSetMemXferPropList(const char* exp) : PropList(H5P_DATASET_XFER) +{ + setDataTransform(exp); +} + +//-------------------------------------------------------------------------- // Function DSetMemXferPropList copy constructor ///\brief Copy constructor: makes a copy of the original /// DSetMemXferPropList object @@ -175,7 +197,112 @@ void DSetMemXferPropList::getBtreeRatios( double& left, double& middle, double& } //-------------------------------------------------------------------------- -// Function: DSetMemXferPropList::setTypeConvCB +// Function: DSetMemXferPropList::setDataTransform +///\brief Sets data transform expression. +///\param expression - IN: null-terminated data transform expression (char*) +///\exception H5::PropListIException +// Programmer: Binh-Minh Ribler - Mar, 2014 +//-------------------------------------------------------------------------- +void DSetMemXferPropList::setDataTransform(const char* expression) const +{ + herr_t ret_value = H5Pset_data_transform( id, expression); + if( ret_value < 0 ) + { + throw PropListIException("DSetMemXferPropList::setDataTransform", + "H5Pset_data_transform failed"); + } +} + +//-------------------------------------------------------------------------- +// Function: DSetMemXferPropList::setDataTransform +///\brief This is an overloaded member function, provided for convenience. +/// It takes a reference to a \c H5std_string for the expression. +///\param expression - IN: H5std_string data transform expression +///\exception H5::PropListIException +// Programmer: Binh-Minh Ribler - Mar, 2014 +//-------------------------------------------------------------------------- +void DSetMemXferPropList::setDataTransform(const H5std_string& expression) const +{ + setDataTransform(expression.c_str()); +} + +//-------------------------------------------------------------------------- +// Function: DSetMemXferPropList::getDataTransform +///\brief Sets data transform expression. +///\param expression - OUT: buffer for data transform expression (char*) +///\param buf_size - IN: size of buffer for expression, including the +/// null terminator +///\exception H5::PropListIException +// Programmer: Binh-Minh Ribler - Mar, 2014 +//-------------------------------------------------------------------------- +ssize_t DSetMemXferPropList::getDataTransform(char* exp, size_t buf_size) const +{ + // If application does not pass in + // H5Pget_data_transform will get buf_size characters of the expression including + // the null terminator + ssize_t exp_len; + exp_len = H5Pget_data_transform(id, exp, buf_size); + + // H5Pget_data_transform returns a negative value, raise an exception + if (exp_len < 0) + { + throw PropListIException("DSetMemXferPropList::getDataTransform", + "H5Pget_data_transform failed"); + } + + // H5Pget_data_transform will put a null terminator at the end of the + // expression or at [buf_size-1] if the expression is at least the size + // of the buffer. + + // Return the actual comment length, which might be different from buf_size + return(exp_len); +} + +//-------------------------------------------------------------------------- +// Function: DSetMemXferPropList::getDataTransform +///\brief This is an overloaded member function, provided for convenience. +/// It takes no parameter and returns a \c H5std_string for the expression. +///\exception H5::PropListIException +// Programmer: Binh-Minh Ribler - Mar, 2014 +//-------------------------------------------------------------------------- +H5std_string DSetMemXferPropList::getDataTransform() const +{ + // Initialize string to "", so that if there is no expression, the returned + // string will be empty + H5std_string expression(""); + + // Preliminary call to get the expression's length + ssize_t exp_len = H5Pget_data_transform(id, NULL, (size_t)0); + + // If H5Pget_data_transform returns a negative value, raise an exception + if (exp_len < 0) + { + throw PropListIException("DSetMemXferPropList::getDataTransform", "H5Pget_data_transform failed"); + } + + // If expression exists, calls C routine again to get it + else if (exp_len > 0) + { + // Temporary buffer for char* expression + char* exp_C = new char[exp_len+1]; + exp_C = (char *)HDmalloc(exp_len+1); + HDmemset(exp_C, 0, exp_len+1); // clear buffer + + // Used overloaded function + exp_len = getDataTransform(exp_C, exp_len+1); + + // Convert the C expression to return + expression = exp_C; + + // Clean up resource + delete []exp_C; + } + // Return the string expression + return(expression); +} + +//-------------------------------------------------------------------------- +// Function: DSetMemXferPropList::getTypeConvCB ///\brief Sets an exception handling callback for datatype conversion /// for a dataset transfer property list. ///\param op - IN: User's function diff --git a/c++/src/H5DxferProp.h b/c++/src/H5DxferProp.h index 846082d..655f975 100644 --- a/c++/src/H5DxferProp.h +++ b/c++/src/H5DxferProp.h @@ -35,6 +35,9 @@ class H5_DLLCPP DSetMemXferPropList : public PropList { // Creates a dataset memory and transfer property list. DSetMemXferPropList(); + // Creates a dataset transform property list. + DSetMemXferPropList(const char* expression); + // Sets type conversion and background buffers. void setBuffer( size_t size, void* tconv, void* bkg ) const; @@ -47,6 +50,16 @@ class H5_DLLCPP DSetMemXferPropList : public PropList { // Gets B-tree split ratios for a dataset transfer property list. void getBtreeRatios( double& left, double& middle, double& right ) const; + // Sets data transform expression. + void setDataTransform(const char* expression) const; + void setDataTransform(const H5std_string& expression) const; + + // Gets data transform expression. + ssize_t getDataTransform(char* exp, size_t buf_size=0) const; + H5std_string getDataTransform() const; + //H5std_string getDataTransform(const size_t buf_size=0) const; + // this will collide with the first one when exp=NULL + // Sets the dataset transfer property list status to TRUE or FALSE. void setPreserve( bool status ) const; diff --git a/c++/src/H5Location.cpp b/c++/src/H5Location.cpp index 7a705f2..ead5822 100644 --- a/c++/src/H5Location.cpp +++ b/c++/src/H5Location.cpp @@ -556,7 +556,6 @@ H5std_string H5Location::getComment(const char* name, const size_t buf_size) con // Clean up resource delete []comment_C; } - // Otherwise, keep comment intact // Return the string comment return(comment); |