Doxygen - added (mostly) beginner functions (#112)

* Doxygen - added (mostly) beginner functions

* Removed duplicate H5Pset_szip function

src/H5Amodule.h

@@ -29,4 +29,21 @@
 #define H5_MY_PKG_ERR  H5E_ATTR
 #define H5_MY_PKG_INIT YES
 
+/**\defgroup H5A H5A
+ * \brief Attribute Interface
+ *
+ * \details The Attribute Interface, H5A, provides a mechanism for attaching
+ *          additional information to a dataset, group, or named datatype.
+ *
+ *          Attributes are accessed by opening the object that they are
+ *          attached to and are not independent objects. Typically an
+ *          attribute is small in size and contains user metadata about the
+ *          object that it is attached to.
+ *
+ *          Attributes look similar to HDF5 datasets in that they have a
+ *          datatype and dataspace. However, they do not support partial
+ *          I/O operations and cannot be compressed or extended.
+ *
+ */
+
 #endif /* _H5Amodule_H */

src/H5Apublic.h

@@ -45,18 +45,306 @@ typedef herr_t (*H5A_operator2_t)(hid_t location_id /*in*/, const char *attr_nam
 extern "C" {
 #endif
 
+/*-------------------------------------------------------------------------*/
+/**
+ * \ingroup H5A
+ *
+ * \brief Closes the specified attribute
+ *
+ * \attr_id
+ *
+ * \return \herr_t
+ *
+ * \details H5Aclose() terminates access to the attribute specified by
+ *          \p attr_id by releasing the identifier.
+ *
+ * \attention Further use of a released attribute identifier is illegal; a
+ *            function using such an identifier will generate an error.
+ *
+ * \since 1.0.0
+ *
+ * \see H5Acreate(), H5Aopen()
+ */
+H5_DLL herr_t  H5Aclose(hid_t attr_id);
+/* --------------------------------------------------------------------------*/
+/**
+ * \ingroup H5A
+ *
+ * \brief Creates an attribute attached to a specified object
+ *
+ * \fgdt_loc_id
+ * \param[in] attr_name  Name of attribute
+ * \param[in] type_id    Attribute datatype identifier
+ * \space_id
+ * \acpl_id
+ * \aapl_id
+ *
+ * \return \hid_tv{attribute}
+ *
+ * \details H5Acreate2() creates an attribute, \p attr_name, which is attached
+ *          to the object specified by the identifier \p loc_id.
+ *
+ *          The attribute name, \p attr_name, must be unique for the object.
+ *
+ *          The attribute is created with the specified datatype and dataspace,
+ *          \p type_id and \p space_id, which are created with the H5T and
+ *          H5S interfaces, respectively.
+ *
+ *          If \p type_id is either a fixed-length or variable-length string,
+ *          it is important to set the string length when defining the
+ *          datatype. String datatypes are derived from #H5T_C_S1 (or
+ *          #H5T_FORTRAN_S1 for Fortran), which defaults to 1 character in
+ *          size. See H5Tset_size() and Creating variable-length string
+ *          datatypes.
+ *
+ *          The access property list is currently unused, but will be used in
+ *          the future. This property list should currently be #H5P_DEFAULT.
+ *
+ *          The attribute identifier returned by this function must be released
+ *          with H5Aclose() resource leaks will develop.
+ *
+ * \note The \p acpl and \p aapl parameters are currently not used; specify
+ *       #H5P_DEFAULT.
+ * \note If \p loc_id is a file identifier, the attribute will be attached
+ *       that file’s root group.
+ *
+ * \since 1.8.0
+ *
+ * \see H5Aclose()
+ *
+ */
 H5_DLL hid_t   H5Acreate2(hid_t loc_id, const char *attr_name, hid_t type_id, hid_t space_id, hid_t acpl_id,
                           hid_t aapl_id);
+/*--------------------------------------------------------------------------*/
+/**
+ * \ingroup H5A
+ *
+ * \brief  Creates an attribute attached to a specified object
+ *
+ * \fgdt_loc_id
+ * \param[in] obj_name  Name, relative to \p loc_id, of object that
+ *                      attribute is to be attached to
+ * \param[in] attr_name Attribute name
+ * \param[in] type_id   Attribute datatype identifier
+ * \space_id
+ * \acpl_id
+ * \aapl_id
+ * \lapl_id
+ *
+ * \return \hid_tv{attribute}
+ *
+ * \details H5Acreate_by_name() creates an attribute, \p attr_name, which is
+ *          attached to the object specified by \p loc_id and \p obj_name.
+ *
+ *          \p loc_id is a location identifier; \p obj_name is the object
+ *          name relative to \p loc_id. If \p loc_id fully specifies the
+ *          object to which the attribute is to be attached, \p obj_name
+ *          should be '.' (a dot).
+ *
+ *          The attribute name, \p attr_name, must be unique for the object.
+ *
+ *          The attribute is created with the specified datatype and
+ *          dataspace, \p type_id and \p space_id, which are created with
+ *          the H5T and H5S interfaces respectively.
+ *
+ *          The attribute creation and access property lists are currently
+ *          unused, but will be used in the future for optional attribute
+ *          creation and access properties. These property lists should
+ *          currently be #H5P_DEFAULT.
+ *
+ *          The link access property list, \p lapl_id, may provide
+ *          information regarding the properties of links required to access
+ *          the object, \p obj_name.
+ *
+ *          The attribute identifier returned by this function must be
+ *          released with H5close() or resource leaks will develop.
+ *
+ * \since 1.8.0
+ *
+ */
 H5_DLL hid_t   H5Acreate_by_name(hid_t loc_id, const char *obj_name, const char *attr_name, hid_t type_id,
                                  hid_t space_id, hid_t acpl_id, hid_t aapl_id, hid_t lapl_id);
+/*--------------------------------------------------------------------------*/
+/**
+ * \ingroup H5A
+ *
+ * \brief Opens an attribute for an object specified by object identifier and
+ *        attribute name
+ *
+ * \fgdt_loc_id{obj_id}
+ * \param[in]  attr_name    Name of attribute to open
+ * \aapl_id
+ *
+ * \return \hid_tv{attribute}
+ *
+ * \details H5Aopen() opens an existing attribute, \p attr_name, that is
+ *          attached to object specified by an object identifier, \p obj_id.
+ *
+ *          The attribute access property list, \p aapl_id, is currently unused
+ *          and should be #H5P_DEFAULT.
+ *
+ *          This function, H5Aopen_by_idx() or H5Aopen_by_name() must be called
+ *          before the attribute can be accessed for any further purpose,
+ *          including reading, writing, or any modification.
+ *
+ *          The attribute identifier returned by this function must be released
+ *          with H5Aclose() or resource leaks will develop.
+ *
+ * \since 1.8.0
+ *
+ * \see H5Aclose(), H5Acreate()
+ */
 H5_DLL hid_t   H5Aopen(hid_t obj_id, const char *attr_name, hid_t aapl_id);
-H5_DLL hid_t   H5Aopen_by_name(hid_t loc_id, const char *obj_name, const char *attr_name, hid_t aapl_id,
-                               hid_t lapl_id);
+/*--------------------------------------------------------------------------*/
+/**
+ * \ingroup H5A
+ *
+ * \brief Opens the nth attribute attached to an object
+ *
+ * \loc_id
+ * \param[in] obj_name  Name of object to which attribute is attached,
+ *                      relative to location
+ * \param[in] idx_type  Type of index
+ * \param[in] order     Index traversal order
+ * \param[in] n         Attribute’s position in index
+ * \aapl_id
+ * \lapl_id
+ *
+ * \return \hid_tv{attribute}
+ *
+ * \details H5Aopen_by_idx() opens an existing attribute that is attached
+ *          to an object specified by location and name, \p loc_id and
+ *          \p obj_name, respectively. If \p loc_id fully specifies the
+ *          object to which the attribute is attached, \p obj_name, should
+ *          be  '.'  (a dot).
+ *
+ *          The attribute is identified by an index type, an index traversal
+ *          order, and a position in the index, \p idx_type, \p order and
+ *          \p n, respectively. These parameters and their valid values are
+ *          discussed in the description of H5Aiterate2().
+ *
+ *          The attribute access property list, \p aapl_id, is currently
+ *          unused and should currently be #H5P_DEFAULT.
+ *
+ *          The link access property list, \p lapl_id, may provide
+ *          information regarding the properties of links required to access
+ *          the object, \p obj_name.
+ *
+ *          This function, H5Aopen(), or H5Aopen_by_name() must be called
+ *          before an attribute can be accessed for any further purpose,
+ *          including reading, writing, or any modification.
+ *
+ *          The attribute identifier returned by this function must be
+ *          released with H5Aclose() or resource leaks will develop.
+ *
+ * \since 1.8.0
+ *
+ */
 H5_DLL hid_t   H5Aopen_by_idx(hid_t loc_id, const char *obj_name, H5_index_t idx_type, H5_iter_order_t order,
                               hsize_t n, hid_t aapl_id, hid_t lapl_id);
-H5_DLL herr_t  H5Awrite(hid_t attr_id, hid_t type_id, const void *buf);
+/*--------------------------------------------------------------------------*/
+/**
+ * \ingroup H5A
+ *
+ * \brief Opens an attribute for an object by object name and attribute name
+ *
+ * \fgdt_loc_id
+ * \param[in] obj_name   Name of object to which attribute is attached,
+ *                       relative to \p loc_id
+ * \param[in] attr_name  Name of attribute to open
+ * \aapl_id
+ * \lapl_id
+ *
+ * \return \hid_tv{attribute}
+ *
+ * \details H5Aopen_by_name() opens an existing attribute, \p attr_name,
+ *          that is attached to an object specified by location and name,
+ *          \p loc_id and \p obj_name, respectively.
+ *
+ *          \p loc_id specifies a location from which the target object can
+ *          be located and \p obj_name is an object name relative to
+ *          \p loc_id. If \p loc_id fully specifies the object to which the
+ *          attribute is attached, \p obj_name should be '.' (a dot).
+ *
+ *          The attribute access property list, \p aapl_id, is currently
+ *          unused and should currently be #H5P_DEFAULT.
+ *
+ *          The link access property list, \p lapl_id, may provide
+ *          information regarding the properties of links required to access
+ *          the object, \p obj_name.
+ *
+ *          This function, H5Aopen(), or H5Aopen_by_idx() must be called
+ *          before an attribute can be accessed for any further purpose,
+ *          including reading, writing, or any modification.
+ *
+ *          The attribute identifier returned by this function must be
+ *          released with H5Aclose() or resource leaks will develop.
+ *
+ * \since 1.8.0
+ *
+ */
+H5_DLL hid_t   H5Aopen_by_name(hid_t loc_id, const char *obj_name, const char *attr_name, hid_t aapl_id,
+                               hid_t lapl_id);
+/*-------------------------------------------------------------------------- */
+/**
+ * \ingroup H5A
+ *
+ * \brief Reads the value of an attribute
+ *
+ * \attr_id
+ * \mem_type_id{type_id}
+ * \param[out] buf        Buffer for data to be read
+ *
+ * \return \herr_t
+ *
+ * \details H5Aread() reads an attribute, specified with \p attr_id. The
+ *          attribute's in-memory datatype is specified with \p type_id. The
+ *          entire attribute is read into \p buf from the file.
+ *
+ *          Datatype conversion takes place at the time of a read or write and
+ *          is automatic.
+ *
+ * \version 1.8.8  Fortran updated to Fortran2003.
+ * \version 1.4.2  The \p dims parameter was added to the Fortran API in this
+ *                 release.
+ * \since   1.0.0
+ *
+ * \see H5Awrite()
+ *
+*/
 H5_DLL herr_t  H5Aread(hid_t attr_id, hid_t type_id, void *buf);
-H5_DLL herr_t  H5Aclose(hid_t attr_id);
+/*--------------------------------------------------------------------------*/
+/**
+ * \ingroup H5A
+ *
+ * \brief Writes data to an attribute
+ *
+ * \attr_id
+ * \mem_type_id{type_id}
+ * \param[out]  buf       Data to be written
+ *
+ * \return \herr_t
+ *
+ * \details H5Awrite() writes an attribute, specified with \p attr_id. The
+ *          attribute's in-memory datatype is specified with \p type_id.
+ *          The entire attribute is written from \p buf to the file.
+ *
+ *          If \p type_id is either a fixed-length or variable-length string,
+ *          it is important to set the string length when defining the datatype.
+ *          String datatypes are derived from #H5T_C_S1 (or #H5T_FORTRAN_S1 for
+ *          Fortran codes), which defaults to 1 character in size.
+ *          See H5Tset_size() and Creating variable-length string datatypes.
+ *
+ *          Datatype conversion takes place at the time of a read or write and
+ *          is automatic.
+ *
+ * \version 1.8.8   Fortran updated to Fortran2003.
+ * \version 1.4.2   Fortran \p dims parameter added in this release
+ * \since 1.0.0
+ * \see H5Aread()
+ *
+ */
+H5_DLL herr_t  H5Awrite(hid_t attr_id, hid_t type_id, const void *buf);
 H5_DLL hid_t   H5Aget_space(hid_t attr_id);
 H5_DLL hid_t   H5Aget_type(hid_t attr_id);
 H5_DLL hid_t   H5Aget_create_plist(hid_t attr_id);
@@ -100,6 +388,51 @@ typedef herr_t (*H5A_operator1_t)(hid_t location_id /*in*/, const char *attr_nam
                                   void *operator_data /*in,out*/);
 
 /* Function prototypes */
+/* --------------------------------------------------------------------------*/
+/**
+ * \ingroup H5A
+ *
+ * \brief Creates an attribute attached to a specified object
+ *
+ * \fgdt_loc_id
+ * \param[in] name     Name of attribute to locate and open
+ * \param[in] type_id  Identifier of attribute datatype
+ * \space_id
+ * \acpl_id
+ *
+ * \return \hid_tv{attribute}
+ *
+ * \note The \p acpl parameters is currently not used; specify #H5P_DEFAULT.
+ *
+ * \deprecated Deprecated in favor of H5Acreate2()
+ *
+ * \details H5Acreate1() creates an attribute, \p name, which is attached
+ *          to the object specified by the identifier \p loc_id.
+ *
+ *          The attribute name, \p name, must be unique for the object.
+ *
+ *          The attribute is created with the specified datatype and dataspace,
+ *          \p type_id and \p space_id, which are created with the H5T and
+ *          H5S interfaces, respectively.
+ *
+ *          If \p type_id is either a fixed-length or variable-length string,
+ *          it is important to set the string length when defining the
+ *          datatype. String datatypes are derived from #H5T_C_S1 (or
+ *          #H5T_FORTRAN_S1 for Fortran), which defaults to 1 character in
+ *          size. See H5Tset_size() and Creating variable-length string
+ *          datatypes.
+ *
+ *          The attribute identifier returned by this function must be released
+ *          with H5Aclose() resource leaks will develop.
+ *
+ * \since 1.8.0
+ *
+ * \version 1.8.0 The function H5Acreate() was renamed to H5Acreate1() and
+ *          deprecated in this release.
+ *
+ * \see H5Aclose()
+ *
+ */
 H5_DLL hid_t  H5Acreate1(hid_t loc_id, const char *name, hid_t type_id, hid_t space_id, hid_t acpl_id);
 H5_DLL hid_t  H5Aopen_name(hid_t loc_id, const char *name);
 H5_DLL hid_t  H5Aopen_idx(hid_t loc_id, unsigned idx);