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author | Binh-Minh Ribler <bmribler@hdfgroup.org> | 2009-04-19 06:17:26 (GMT) |
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committer | Binh-Minh Ribler <bmribler@hdfgroup.org> | 2009-04-19 06:17:26 (GMT) |
commit | 3489809ca55b4ec1055e3a9d955d4676f8b6c6c1 (patch) | |
tree | 8ab99deaa2f775cac299fd66a53ba002f7402b2d /c++/src | |
parent | f38ae770ca0942ec1c7edfa91650f04118ec0627 (diff) | |
download | hdf5-3489809ca55b4ec1055e3a9d955d4676f8b6c6c1.zip hdf5-3489809ca55b4ec1055e3a9d955d4676f8b6c6c1.tar.gz hdf5-3489809ca55b4ec1055e3a9d955d4676f8b6c6c1.tar.bz2 |
[svn-r16788] Description:
Fixed to pass parameters to H5Awrite/H5Aread correctly so that
all Attribute::write and Attribute::read methods work correctly
for both fixed-length and variable-length string attributes.
Added more test cases.
Platforms tested:
Linux/32 2.6 (jam)
FreeBSD/64 6.3 (liberty)
Diffstat (limited to 'c++/src')
-rw-r--r-- | c++/src/H5Attribute.cpp | 78 |
1 files changed, 54 insertions, 24 deletions
diff --git a/c++/src/H5Attribute.cpp b/c++/src/H5Attribute.cpp index 002550e..d80286b 100644 --- a/c++/src/H5Attribute.cpp +++ b/c++/src/H5Attribute.cpp @@ -34,7 +34,7 @@ #include "H5DataSpace.h" #include "H5File.h" #include "H5Attribute.h" -#include "H5private.h" // for HDfree +#include "H5private.h" // for HDfree #ifndef H5_NO_NAMESPACE namespace H5 { @@ -102,17 +102,34 @@ void Attribute::write( const DataType& mem_type, const void *buf ) const ///\exception H5::AttributeIException // Programmer Binh-Minh Ribler - Apr, 2003 //-------------------------------------------------------------------------- -void Attribute::write( const DataType& mem_type, const H5std_string& strg ) const +void Attribute::write(const DataType& mem_type, const H5std_string& strg) const { - // Convert string to C-string - const char* strg_C; - strg_C = strg.c_str(); // strg_C refers to the contents of strg as a C-str + // Check if this attribute has variable-len string or fixed-len string and + // proceed appropriately. + htri_t is_variable_len = H5Tis_variable_str(mem_type.getId()); + if (is_variable_len < 0) + { + throw AttributeIException("Attribute::write", "H5Tis_variable_str failed"); + } + // Convert string to C-string + const char* strg_C; + strg_C = strg.c_str(); // strg_C refers to the contents of strg as a C-str + herr_t ret_value = 0; - herr_t ret_value = H5Awrite( id, mem_type.getId(), &strg_C ); - if( ret_value < 0 ) - { - throw AttributeIException("Attribute::write", "H5Awrite failed"); - } + // Pass string in differently depends on variable or fixed length + if (!is_variable_len) + { + ret_value = H5Awrite(id, mem_type.getId(), strg_C); + } + else + { + // passing third argument by address + ret_value = H5Awrite(id, mem_type.getId(), &strg_C); + } + if (ret_value < 0) + { + throw AttributeIException("Attribute::write", "H5Awrite failed"); + } } //-------------------------------------------------------------------------- @@ -128,7 +145,7 @@ void Attribute::read( const DataType& mem_type, void *buf ) const herr_t ret_value = H5Aread( id, mem_type.getId(), buf ); if( ret_value < 0 ) { - throw AttributeIException("Attribute::read", "H5Aread failed"); + throw AttributeIException("Attribute::read", "H5Aread failed"); } } @@ -157,22 +174,36 @@ void Attribute::read( const DataType& mem_type, H5std_string& strg ) const // Check if this attribute has variable-len string or fixed-len string and // proceed appropriately. - bool is_variable_len = H5Tis_variable_str(mem_type.getId()); + htri_t is_variable_len = H5Tis_variable_str(mem_type.getId()); + if (is_variable_len < 0) + { + throw AttributeIException("Attribute::write", "H5Tis_variable_str failed"); + } + + // Prepare and call C API to read attribute. char *strg_C; - void *ptr; + herr_t ret_value = 0; if (!is_variable_len) // only allocate for fixed-len string { strg_C = new char [(size_t)attr_size+1]; - ptr = strg_C; + if (strg_C == NULL) + { + throw AttributeIException("Attribute::read", "Unable to allocate buffer to read the attribute"); + } + ret_value = H5Aread(id, mem_type.getId(), strg_C); } else { // no allocation for variable-len string; C library will - ptr = &strg_C; + ret_value = H5Aread(id, mem_type.getId(), &strg_C); } - // Call C API to get the attribute data, a string of chars - herr_t ret_value = H5Aread(id, mem_type.getId(), ptr); + if( ret_value < 0 ) + { + if (!is_variable_len) // only de-allocate for fixed-len string + delete []strg_C; + throw AttributeIException("Attribute::read", "H5Aread failed"); + } // Get string from the C char* and release resource allocated locally if (!is_variable_len) @@ -187,7 +218,6 @@ void Attribute::read( const DataType& mem_type, H5std_string& strg ) const strg = strg_C; HDfree(strg_C); } - ptr = NULL; } //-------------------------------------------------------------------------- @@ -360,21 +390,21 @@ hid_t Attribute::getId() const ///\brief Sets the identifier of this object to a new value. /// ///\exception H5::IdComponentException when the attempt to close the HDF5 -/// object fails +/// object fails // Description: -// The underlaying reference counting in the C library ensures -// that the current valid id of this object is properly closed. -// Then the object's id is reset to the new id. +// The underlaying reference counting in the C library ensures +// that the current valid id of this object is properly closed. +// Then the object's id is reset to the new id. // Programmer Binh-Minh Ribler - 2000 //-------------------------------------------------------------------------- void Attribute::p_setId(const hid_t new_id) { // handling references to this old id try { - close(); + close(); } catch (Exception close_error) { - throw AttributeIException("Attribute::p_setId", close_error.getDetailMsg()); + throw AttributeIException("Attribute::p_setId", close_error.getDetailMsg()); } // reset object's id to the given id id = new_id; |