diff options
Diffstat (limited to 'src/H5Gpublic.h')
| -rw-r--r-- | src/H5Gpublic.h | 826 |
1 files changed, 666 insertions, 160 deletions
diff --git a/src/H5Gpublic.h b/src/H5Gpublic.h index 68786dc..416ff2c 100644 --- a/src/H5Gpublic.h +++ b/src/H5Gpublic.h @@ -41,24 +41,31 @@ /* Public Typedefs */ /*******************/ -/* Types of link storage for groups */ +//! <!-- [H5G_storage_t_snip] --> +/** + * Types of link storage for groups + */ typedef enum H5G_storage_type_t { - H5G_STORAGE_TYPE_UNKNOWN = -1, /* Unknown link storage type */ - H5G_STORAGE_TYPE_SYMBOL_TABLE, /* Links in group are stored with a "symbol table" */ - /* (this is sometimes called "old-style" groups) */ - H5G_STORAGE_TYPE_COMPACT, /* Links are stored in object header */ - H5G_STORAGE_TYPE_DENSE /* Links are stored in fractal heap & indexed with v2 B-tree */ + H5G_STORAGE_TYPE_UNKNOWN = -1, /**< Unknown link storage type */ + H5G_STORAGE_TYPE_SYMBOL_TABLE, /**< Links in group are stored with a "symbol table" */ + /**< (this is sometimes called "old-style" groups) */ + H5G_STORAGE_TYPE_COMPACT, /**< Links are stored in object header */ + H5G_STORAGE_TYPE_DENSE /**< Links are stored in fractal heap & indexed with v2 B-tree */ } H5G_storage_type_t; +//! <!-- [H5G_storage_t_snip] --> -/* Information struct for group (for H5Gget_info/H5Gget_info_by_name/H5Gget_info_by_idx) */ -//! [H5G_info_t_snip] +//! <!-- [H5G_info_t_snip] --> +/** + * Information struct for group for + * H5Gget_info(), H5Gget_info_by_name(), and H5Gget_info_by_idx() + */ typedef struct H5G_info_t { - H5G_storage_type_t storage_type; /* Type of storage for links in group */ - hsize_t nlinks; /* Number of links in group */ - int64_t max_corder; /* Current max. creation order value for group */ - hbool_t mounted; /* Whether group has a file mounted on it */ + H5G_storage_type_t storage_type; /**< Type of storage for links in group */ + hsize_t nlinks; /**< Number of links in group */ + int64_t max_corder; /**< Current max. creation order value for group */ + hbool_t mounted; /**< Whether group has a file mounted on it */ } H5G_info_t; -//! [H5G_info_t_snip] +//! <!-- [H5G_info_t_snip] --> /********************/ /* Public Variables */ @@ -120,24 +127,8 @@ H5_DLL hid_t H5Gcreate2(hid_t loc_id, const char *name, hid_t lcpl_id, hid_t gcp /** * -------------------------------------------------------------------------- - * \ingroup H5G - * - * \brief Asynchronous version of H5Gcreate2() - * - * \app_file - * \app_func - * \app_line - * \fgdta_loc_id - * \param[in] name Name of the group to create - * \lcpl_id - * \gcpl_id - * \gapl_id - * \es_id - * - * \return \hid_t{group} - * - * \see H5Gcreate2() - * + * \ingroup ASYNC + * \async_variant_of{H5Gcreate} */ H5_DLL hid_t H5Gcreate_async(const char *app_file, const char *app_func, unsigned app_line, hid_t loc_id, const char *name, hid_t lcpl_id, hid_t gcpl_id, hid_t gapl_id, hid_t es_id); @@ -223,22 +214,8 @@ H5_DLL hid_t H5Gopen2(hid_t loc_id, const char *name, hid_t gapl_id); /** * -------------------------------------------------------------------------- - * \ingroup H5G - * - * \brief Asynchronous version of H5Gopen2() - * - * \app_file - * \app_func - * \app_line - * \fgdta_loc_id - * \param[in] name Name of the group to open - * \gapl_id - * \es_id - * - * \return \hid_t{group} - * - * \see H5Gopen2() - * + * \ingroup ASYNC + * \async_variant_of{H5Gopen} */ H5_DLL hid_t H5Gopen_async(const char *app_file, const char *app_func, unsigned app_line, hid_t loc_id, const char *name, hid_t gapl_id, hid_t es_id); @@ -296,21 +273,8 @@ H5_DLL herr_t H5Gget_info(hid_t loc_id, H5G_info_t *ginfo); /** * -------------------------------------------------------------------------- - * \ingroup H5G - * - * \brief Asynchronous version of H5Gget_info() - * - * \app_file - * \app_func - * \app_line - * \fgdta_loc_id - * \param[out] ginfo Struct in which group information is returned - * \es_id - * - * \return \hid_t{group} - * - * \see H5Gget_info() - * + * \ingroup ASYNC + * \async_variant_of{H5Gget_info} */ H5_DLL herr_t H5Gget_info_async(const char *app_file, const char *app_func, unsigned app_line, hid_t loc_id, H5G_info_t *ginfo /*out*/, hid_t es_id); @@ -351,23 +315,8 @@ H5_DLL herr_t H5Gget_info_by_name(hid_t loc_id, const char *name, H5G_info_t *gi /** * -------------------------------------------------------------------------- - * \ingroup H5G - * - * \brief Asynchronous version of H5Gget_info_by_name() - * - * \app_file - * \app_func - * \app_line - * \fgdta_loc_id - * \param[in] name Name of the group to query - * \param[out] ginfo Struct in which group information is returned - * \lapl_id - * \es_id - * - * \return \herr_t - * - * \see H5Gget_info_by_name() - * + * \ingroup ASYNC + * \async_variant_of{H5Gget_info_by_name} */ H5_DLL herr_t H5Gget_info_by_name_async(const char *app_file, const char *app_func, unsigned app_line, hid_t loc_id, const char *name, H5G_info_t *ginfo /*out*/, @@ -423,29 +372,8 @@ H5_DLL herr_t H5Gget_info_by_idx(hid_t loc_id, const char *group_name, H5_index_ /** * -------------------------------------------------------------------------- - * \ingroup H5G - * - * \brief Asynchronous version of H5Gcreate2() - * - * \app_file - * \app_func - * \app_line - * \fgdta_loc_id - * \param[in] group_name Name of the group to query - * \param[in] idx_type Transient index identifying object - * \param[in] order Transient index identifying object - * \param[in] n Position in the index of the group to query - * \param[out] ginfo Struct in which group information is returned - * \lapl_id - * \es_id - * - * \return Returns - * \li The size of the object name if successful, or - * \li 0 if no name is associated with the group identifier, or - * \li negative value, if failure occurred - * - * \see H5Gcreate2() - * + * \ingroup ASYNC + * \async_variant_of{H5Gget_info_by_idx} */ H5_DLL herr_t H5Gget_info_by_idx_async(const char *app_file, const char *app_func, unsigned app_line, hid_t loc_id, const char *group_name, H5_index_t idx_type, @@ -523,29 +451,18 @@ H5_DLL herr_t H5Grefresh(hid_t group_id); * Failure to release a group with this call will result in * resource leaks. * - * \since 1.0.0 + * \par Example + * \snippet H5F_examples.c mount * - * \version 1.4.0 Fortran function introduced in this release + * \since 1.0.0 * */ H5_DLL herr_t H5Gclose(hid_t group_id); /** * -------------------------------------------------------------------------- - * \ingroup H5G - * - * \brief Asynchronous version of H5Gcreate2() - * - * \app_file - * \app_func - * \app_line - * \group_id - * \es_id - * - * \return \herr_t - * - * \see H5Gcreate2() - * + * \ingroup ASYNC + * \async_variant_of{H5Gclose} */ H5_DLL herr_t H5Gclose_async(const char *app_file, const char *app_func, unsigned app_line, hid_t group_id, hid_t es_id); @@ -595,60 +512,649 @@ H5_DLL herr_t H5Gclose_async(const char *app_file, const char *app_func, unsigne /* Typedefs */ -/* +//! <!-- [H5G_obj_t_snip] --> +/** * An object has a certain type. The first few numbers are reserved for use * internally by HDF5. Users may add their own types with higher values. The - * values are never stored in the file -- they only exist while an - * application is running. An object may satisfy the `isa' function for more - * than one type. + * values are never stored in the file -- they only exist while an application + * is running. An object may satisfy the `isa' function for more than one type. + * + * \deprecated */ typedef enum H5G_obj_t { - H5G_UNKNOWN = -1, /* Unknown object type */ - H5G_GROUP, /* Object is a group */ - H5G_DATASET, /* Object is a dataset */ - H5G_TYPE, /* Object is a named data type */ - H5G_LINK, /* Object is a symbolic link */ - H5G_UDLINK, /* Object is a user-defined link */ - H5G_RESERVED_5, /* Reserved for future use */ - H5G_RESERVED_6, /* Reserved for future use */ - H5G_RESERVED_7 /* Reserved for future use */ + H5G_UNKNOWN = -1, /**< Unknown object type */ + H5G_GROUP, /**< Object is a group */ + H5G_DATASET, /**< Object is a dataset */ + H5G_TYPE, /**< Object is a named data type */ + H5G_LINK, /**< Object is a symbolic link */ + H5G_UDLINK, /**< Object is a user-defined link */ + H5G_RESERVED_5, /**< Reserved for future use */ + H5G_RESERVED_6, /**< Reserved for future use */ + H5G_RESERVED_7 /**< Reserved for future use */ } H5G_obj_t; +//! <!-- [H5G_obj_t_snip] --> -/** Define the operator function pointer for for H5Giterate() */ -//! [H5G_iterate_t_snip] +//! <!-- [H5G_iterate_t_snip] --> +/** + * Callback for H5Giterate() + * + * \deprecated + */ typedef herr_t (*H5G_iterate_t)(hid_t group, const char *name, void *op_data); -//! [H5G_iterate_t_snip] +//! <!-- [H5G_iterate_t_snip] --> -/** Information about an object */ -//! [H5G_stat_t_snip] +//! <!-- [H5G_stat_t_snip] --> +/** + * Information about an object + * + * \deprecated + */ typedef struct H5G_stat_t { - unsigned long fileno[2]; /*file number */ - unsigned long objno[2]; /*object number */ - unsigned nlink; /*number of hard links to object*/ - H5G_obj_t type; /*basic object type */ - time_t mtime; /*modification time */ - size_t linklen; /*symbolic link value length */ - H5O_stat_t ohdr; /* Object header information */ + unsigned long fileno[2]; /**< file number */ + unsigned long objno[2]; /**< object number */ + unsigned nlink; /**< number of hard links to object*/ + H5G_obj_t type; /**< basic object type */ + time_t mtime; /**< modification time */ + size_t linklen; /**< symbolic link value length */ + H5O_stat_t ohdr; /**< Object header information */ } H5G_stat_t; -//! [H5G_stat_t_snip] +//! <!-- [H5G_stat_t_snip] --> /* Function prototypes */ -H5_DLL hid_t H5Gcreate1(hid_t loc_id, const char *name, size_t size_hint); -H5_DLL hid_t H5Gopen1(hid_t loc_id, const char *name); -H5_DLL herr_t H5Glink(hid_t cur_loc_id, H5G_link_t type, const char *cur_name, const char *new_name); -H5_DLL herr_t H5Glink2(hid_t cur_loc_id, const char *cur_name, H5G_link_t type, hid_t new_loc_id, - const char *new_name); -H5_DLL herr_t H5Gmove(hid_t src_loc_id, const char *src_name, const char *dst_name); -H5_DLL herr_t H5Gmove2(hid_t src_loc_id, const char *src_name, hid_t dst_loc_id, const char *dst_name); -H5_DLL herr_t H5Gunlink(hid_t loc_id, const char *name); -H5_DLL herr_t H5Gget_linkval(hid_t loc_id, const char *name, size_t size, char *buf /*out*/); -H5_DLL herr_t H5Gset_comment(hid_t loc_id, const char *name, const char *comment); -H5_DLL int H5Gget_comment(hid_t loc_id, const char *name, size_t bufsize, char *buf); -H5_DLL herr_t H5Giterate(hid_t loc_id, const char *name, int *idx, H5G_iterate_t op, void *op_data); -H5_DLL herr_t H5Gget_num_objs(hid_t loc_id, hsize_t *num_objs); -H5_DLL herr_t H5Gget_objinfo(hid_t loc_id, const char *name, hbool_t follow_link, - H5G_stat_t *statbuf /*out*/); -H5_DLL ssize_t H5Gget_objname_by_idx(hid_t loc_id, hsize_t idx, char *name, size_t size); +/** + *------------------------------------------------------------------------- + * \ingroup H5G + * + * \brief Creates a new group and links it into the file + * + * \fgdta_loc_id + * \param[in] name Name of the group to create + * \param[in] size_hint Optional parameter indicating the number of bytes + * to reserve for the names that will appear in the group + * + * \return \hid_t{group} + * + * \deprecated This function is deprecated in favor of H5Gcreate2(). + * + * \details H5Gcreate1() creates a new group with the specified name at the + * specified location, \p loc_id. \p loc_id may be a file, group, + * dataset, named datatype or attribute. If an attribute, dataset, or + * named datatype is specified for \p loc_id then the group will be + * created at the location where the attribute, dataset, or named + * datatype is attached. The name, name, must not already be taken by + * some other object and all parent groups must already exist. + * + * \p name can be a relative path based at \p loc_id or an absolute + * path from the root of the file. Use of this function requires that + * any intermediate groups specified in the path already exist. + * + * The length of a group name, or of the name of any object within a + * group, is not limited. + * + * \p size_hint is a hint for the number of bytes to reserve to store + * the names which will be eventually added to the new group. Passing a + * value of zero for \p size_hint is usually adequate since the library + * is able to dynamically resize the name heap, but a correct hint may + * result in better performance. If a non-positive value is supplied + * for \p size_hint, then a default size is chosen. + * + * The return value is a group identifier for the open group. This + * group identifier should be closed by calling H5Gclose() when it is + * no longer needed. + * + * See H5Gcreate_anon() for a discussion of the differences between + * H5Gcreate1() and H5Gcreate_anon(). + * + * \par Example + * \snippet H5F_examples.c mount + * + * \version 1.8.0 Function H5Gcreate() renamed to H5Gcreate1() and deprecated + * in this release. + * \since 1.0.0 + * + */ +H5_DLL hid_t H5Gcreate1(hid_t loc_id, const char *name, size_t size_hint); +/** + *------------------------------------------------------------------------- + * \ingroup H5G + * + * \brief Opens an existing group for modification and returns a group + * identifier for that group + * + * \fgdta_loc_id + * \param[in] name Name of the group to open + * + * \return \hid_t{group} + * + * \deprecated This function is deprecated in favor of H5Gopen2(). + * + * \details H5Gopen1() opens an existing group, \p name, at the location + * specified by \p loc_id. + * + * H5Gopen1() returns a group identifier for the group that was + * opened. This group identifier should be released by calling + * H5Gclose() when it is no longer needed. + * + * \version 1.8.0 The function H5Gopen() was renamed to H5Gopen1() + * and deprecated in this release. + * \since 1.0.0 + * + */ +H5_DLL hid_t H5Gopen1(hid_t loc_id, const char *name); +/** + *------------------------------------------------------------------------- + * \ingroup H5G + * + * \brief Creates a link of the specified type from \p new_name to \p + * cur_name + * + * \fg_loc_id{cur_loc_id} + * \param[in] type Link type + * \param[in] cur_name Name of the existing object + * \param[in] new_name New name for the object + * + * \return \herr_t + * + * \deprecated This function is deprecated. + * + * \details H5Glink() creates a new name for an object that has some current + * name, possibly one of many names it currently has. + * + * If \p link_type is #H5G_LINK_HARD, then \p cur_name must specify + * the name of an existing object and both names are interpreted + * relative to \p cur_loc_id, which is either a file identifier or a + * group identifier. + * + * If \p link_type is #H5G_LINK_SOFT, then \p cur_name can be anything + * and is interpreted at lookup time relative to the group which + * contains the final component of \p new_name. For instance, if \p + * cur_name is \Code{./foo}, \p new_name is \Code{./x/y/bar}, and a + * request is made for \Code{./x/y/bar}, then the actual object looked + * up is \Code{./x/y/./foo}. + + * \version 1.8.0 Function deprecated in this release. + * + */ +H5_DLL herr_t H5Glink(hid_t cur_loc_id, H5G_link_t type, const char *cur_name, const char *new_name); +/** + *------------------------------------------------------------------------- + * \ingroup H5G + * + * \brief Creates a link of the specified type from \p cur_name to \p + * new_name + * + * \fg_loc_id{cur_loc_id} + * \param[in] cur_name Name of the existing object + * \param[in] type Link type + * \fg_loc_id{new_loc_id} + * \param[in] new_name New name for the object + * + * \return \herr_t + * + * \deprecated This function is deprecated. + * + * \details H5Glink2() creates a new name for an object that has some current + * name, possibly one of many names it currently has. + * + * If \p link_type is #H5G_LINK_HARD, then \p cur_name must specify the + * name of an existing object and both names are interpreted relative + * to \p cur_loc_id and \p new_loc_id, respectively, which are either + * file identifiers or group identifiers. + * + * If \p link_type is #H5G_LINK_SOFT, then \p cur_name can be anything + * and is interpreted at lookup time relative to the group which + * contains the final component of \p new_name. For instance, if \p + * current_name is \Code{./foo}, \p new_name is \Code{./x/y/bar}, and a + * request is made for \Code{./x/y/bar}, then the actual object looked + * up is \Code{./x/y/./foo}. + + * \version 1.8.0 Function deprecated in this release. + * + */ +H5_DLL herr_t H5Glink2(hid_t cur_loc_id, const char *cur_name, H5G_link_t type, hid_t new_loc_id, + const char *new_name); +/** + *------------------------------------------------------------------------- + * \ingroup H5G + * + * \brief Renames an object within an HDF5 file + * + * \fg_loc_id{src_loc_id} + * \param[in] src_name Object's original name + * \param[in] dst_name Object's new name + * + * \return \herr_t + * + * \deprecated This function is deprecated. + * + * \details H5Gmove() renames an object within an HDF5 file. The original name, + * \p src_name, is unlinked from the group graph and the new name, \p + * dst_name, is inserted as an atomic operation. Both names are + * interpreted relative to \p loc_id, which is either a file or a group + * identifier. + * + * \attention Exercise care in moving groups as it is possible to render data in + * a file inaccessible with H5Gmove(). See The Group Interface in the + * HDF5 User's Guide. + * + * \version 1.8.0 Function deprecated in this release. + * + */ +H5_DLL herr_t H5Gmove(hid_t src_loc_id, const char *src_name, const char *dst_name); +/** + *------------------------------------------------------------------------- + * \ingroup H5G + * + * \brief Renames an object within an HDF5 file + * + * \fg_loc_id{src_loc_id} + * \param[in] src_name Object's original name + * \fg_loc_id{dst_loc_id} + * \param[in] dst_name Object's new name + * + * \return \herr_t + * + * \deprecated This function is deprecated. + * + * \details H5Gmove2() renames an object within an HDF5 file. The original name, + * \p src_name, is unlinked from the group graph and the new name, \p + * dst_name, is inserted as an atomic operation. + * + * \p src_name and \p dst_name are interpreted relative to \p + * src_loc_id and \p dst_loc_id, respectively, which are either file or + * group identifiers. + * + * \attention Exercise care in moving groups as it is possible to render data in + * a file inaccessible with H5Gmove2(). See The Group Interface in the + * HDF5 User's Guide. + * + * \version 1.8.0 Function deprecated in this release. + * + */ +H5_DLL herr_t H5Gmove2(hid_t src_loc_id, const char *src_name, hid_t dst_loc_id, const char *dst_name); +/** + *------------------------------------------------------------------------- + * \ingroup H5G + * + * \brief Removes the link to an object from a group + * + * \fg_loc_id{loc_id} + * \param[in] name Name of the object to unlink + * + * \return \herr_t + * + * \deprecated This function is deprecated in favor of the function H5Ldelete(). + * + * \details H5Gunlink() removes the object specified by \p name from the group + * graph and decrements the link count for the object to which \p name + * points. This action eliminates any association between name and the + * object to which name pointed. + * + * Object headers keep track of how many hard links refer to an object; + * when the link count reaches zero, the object can be removed from the + * file. Objects which are open are not removed until all identifiers + * to the object are closed. + * + * If the link count reaches zero, all file space associated with the + * object will be released, i.e., identified in memory as freespace. If + * any object identifier is open for the object, the space will not be + * released until after the object identifier is closed. + * + * Note that space identified as freespace is available for re-use only + * as long as the file remains open; once a file has been closed, the + * HDF5 library loses track of freespace. See “Freespace Management” in + * the HDF5 User's Guide for further details. + * + * \attention Exercise care in moving groups as it is possible to render data in + * a file inaccessible with H5Gunlink(). See The Group Interface in the + * HDF5 User's Guide. + * + * \version 1.8.0 Function deprecated in this release. + * + */ +H5_DLL herr_t H5Gunlink(hid_t loc_id, const char *name); +/** + *------------------------------------------------------------------------- + * \ingroup H5G + * + * \brief Returns the name of the object that the symbolic link points to + * + * \fg_loc_id{loc_id} + * \param[in] name Symbolic link to the object whose name is to be returned + * \param[in] size Maximum number of characters of value to be returned + * \param[out] buf A buffer to hold the name of the object being sought + * + * \return \herr_t + * + * \deprecated This function is deprecated in favor of the function H5Lget_val(). + * + * \details H5Gget_linkval() returns up to size characters of the name of the + * object that the symbolic link name points to. + * + * The parameter \p loc_id is a file or group identifier. + * + * The parameter \p name must be a symbolic link pointing to the + * desired object and must be defined relative to \p loc_id. + * + * If size is smaller than the size of the returned object name, then + * the name stored in the buffer value will not be \c NULL terminated. + * + * This function fails if \p name is not a symbolic link. The presence + * of a symbolic link can be tested by passing zero for \p size and \p + * NULL for value. + * + * This function should be used only after H5Lget_info1() (or the + * deprecated function H5Gget_objinfo()) has been called to verify that + * name is a symbolic link. + * + * \version 1.8.0 Function deprecated in this release. + * + */ +H5_DLL herr_t H5Gget_linkval(hid_t loc_id, const char *name, size_t size, char *buf /*out*/); +/** + *------------------------------------------------------------------------- + * \ingroup H5G + * + * \brief Sets comment for specified object + * + * \fgdt_loc_id + * \param[in] name Name of the object whose comment is to be set or reset + * name must be \Code{'.'} (dot) if \p loc_id fully specifies + * the object for which the comment is to be set. + * \param[in] comment The new comment + * + * \return \herr_t + * + * \deprecated This function is deprecated in favor of the function + * H5Oset_comment(). + * + * \details H5Gset_comment() sets the comment for the object specified by \p + * loc_id and name to comment. Any previously existing comment is + * overwritten. + * + * \p loc_id can specify any object in the file. name can be one of the + * following: + * \li The name of the object relative to \p loc_id + * \li An absolute name of the object, starting from \c /, the file’s + * root group + * \li A dot (\c .), if \p loc_id fully specifies the object + * + * If \p comment is the empty string or a null pointer, the comment + * message is removed from the object. + * + * Comments should be relatively short, null-terminated, ASCII strings. + * + * Comments can be attached to any object that has an object header, + * e.g., datasets, groups, and named datatypes, but not symbolic links. + * + * \version 1.8.0 Function deprecated in this release. + * + */ +H5_DLL herr_t H5Gset_comment(hid_t loc_id, const char *name, const char *comment); +/** + *------------------------------------------------------------------------- + * \ingroup H5G + * + * \brief Retrieves comment for specified object + * + * \fgdt_loc_id + * \param[in] name Name of the object whose comment is to be set or reset + * name must be \Code{'.'} (dot) if \p loc_id fully specifies + * the object for which the comment is to be set. + * \param[in] bufsize Maximum number of comment characters to be returned in \p buf. + * \param[in] buf The comment + * + * \return Returns the number of characters in the comment, counting the \c NULL + * terminator, if successful; the value returned may be larger than + * \p bufsize. Otherwise returns a negative value. + * + * \deprecated This function is deprecated in favor of the function + * H5Oget_comment(). + * + * \details H5Gget_comment() retrieves the comment for the the object specified + * by \p loc_id and \p name. The comment is returned in the buffer \p + * buf. + * + * \p loc_id can specify any object in the file. name can be one of the + * following: + * \li The name of the object relative to \p loc_id + * \li An absolute name of the object, starting from \c /, the file’s + * root group + * \li A dot (\c .), if \p loc_id fully specifies the object + * + * At most bufsize characters, including a null-terminator, are + * returned in \p buf. The returned value is not null-terminated if the + * comment is longer than the supplied buffer. If the size of the + * comment is unknown, a preliminary \p H5Gget_comment() call will + * return the size of the comment, including space for the + * null-terminator. + * + * If an object does not have a comment, the empty string is returned + * in comment. + * + * \version 1.8.0 Function deprecated in this release. + * + */ +H5_DLL int H5Gget_comment(hid_t loc_id, const char *name, size_t bufsize, char *buf); +/** + *------------------------------------------------------------------------- + * \ingroup H5G + * + * \brief Iterates over the entries of a group invoking a callback for each + * entry encountered + * + * \fg_loc_id + * \param[in] name Group over which the iteration is performed + * \param[in,out] idx Location at which to begin the iteration + * \param[in] op Operation to be performed on an object at each step of the + * iteration + * \param[in,out] op_data Data associated with the operation + * + * \return \herr_t + * + * \deprecated This function is deprecated in favor of the function + * H5Literate1(). + * + * \details H5Giterate() iterates over the members of name in the file or group + * specified with \p loc_id. For each object in the group, the \p + * op_data and some additional information, specified below, are passed + * to the operator function. The iteration begins with the \p idx + * object in the group and the next element to be processed by the + * operator is returned in \p idx. If \p idx is NULL, then the iterator + * starts at the first group member; since no stopping point is + * returned in this case, the iterator cannot be restarted if one of + * the calls to its operator returns non-zero. H5Giterate() does not + * recursively follow links into subgroups of the specified group. + * + * The prototype for \ref H5G_iterate_t is: + * \snippet this H5G_iterate_t_snip + * + * The operation receives the group identifier for the group being + * iterated over, \p group, the name of the current object within + * the group, \p name, and the pointer to the operator data + * passed in to H5Giterate(), \p op_data. + * + * The return values from an operator are: + * \li Zero causes the iterator to continue, returning zero when all + * group members have been processed. + * \li Positive causes the iterator to immediately return that positive + * value, indicating short-circuit success. The iterator can be + * restarted at the next group member. + * \li Negative causes the iterator to immediately return that value, + * indicating failure. The iterator can be restarted at the next + * group member. + * + * H5Giterate() assumes that the membership of the group identified by + * \p name remains unchanged through the iteration. If the membership + * changes during the iteration, the function's behavior is undefined. + * + * H5Giterate() is not recursive. In particular, if a member of \p name + * is found to be a group, call it \c subgroup_a, H5Giterate() does not + * examine the members of \c subgroup_a. When recursive iteration is + * required, the application must handle the recursion, explicitly + * calling H5Giterate() on discovered subgroups. + + * \version 1.8.0 Function deprecated in this release. + * + */ +H5_DLL herr_t H5Giterate(hid_t loc_id, const char *name, int *idx, H5G_iterate_t op, void *op_data); +/** + *------------------------------------------------------------------------- + * \ingroup H5G + * + * \brief Returns number of objects in the group specified by its identifier + * + * \fg_loc_id + * \param[out] num_objs Number of objects in the group + * + * \return \herr_t + * + * \deprecated This function is deprecated in favor of the function H5Gget_info(). + * + * \details H5Gget_num_objs() returns number of objects in a group. Group is + * specified by its identifier \p loc_id. If a file identifier is + * passed in, then the number of objects in the root group is returned. + * + * \version 1.8.0 Function deprecated in this release. + * + */ +H5_DLL herr_t H5Gget_num_objs(hid_t loc_id, hsize_t *num_objs); +/** + *------------------------------------------------------------------------- + * \ingroup H5G + * + * \brief Returns information about an object. + * + * \fgdt_loc_id + * \param[in] name Name of the object for which status is being sought + * \param[in] follow_link Link flag + * \param[out] statbuf Buffer in which to return information about the object + * + * \return \herr_t + * + * \deprecated This function is deprecated in favor of the functions H5Oget_info() + * and H5Lget_info1(). + * + * \details H5Gget_objinfo() returns information about the specified object + * through the \p statbuf argument. + * + * A file or group identifier, \p loc_id, and an object name, \p name, + * relative to \p loc_id, are commonly used to specify the + * object. However, if the object identifier is already known to the + * application, an alternative approach is to use that identifier, \c + * obj_id, in place of \p loc_id, and a dot (\c .) in place of \p + * name. Thus, the alternative versions of the first portion of an + * H5Gget_objinfo() call would be as follows: + * \code + * H5Gget_objinfo (loc_id name ...) + * H5Gget_objinfo (obj_id . ...) + * \endcode + * + * If the object is a symbolic link and follow_link is zero (0), then + * the information returned describes the link itself; otherwise the + * link is followed and the information returned describes the object + * to which the link points. If \p follow_link is non-zero but the + * final symbolic link is dangling (does not point to anything), then + * an error is returned. The \p statbuf fields are undefined for an + * error. The existence of an object can be tested by calling this + * function with a \c NULL \p statbuf. + * + * H5Gget_objinfo() fills in the following data structure (defined in + * H5Gpublic.h): + * \snippet this H5G_stat_t_snip + * + * where \ref H5O_stat_t (defined in H5Opublic.h) is: + * \snippet H5Opublic.h H5O_stat_t_snip + * + * \attention Some systems will be able to record the time accurately but unable + * to retrieve the correct time; such systems (e.g., Irix64) will + * report an \c mtime value of 0 (zero). + * + * \version 1.8.0 Function deprecated in this release. + * \version 1.6.1 Two new fields were added to the \ref H5G_stat_t struct in + * this release. + * + */ +H5_DLL herr_t H5Gget_objinfo(hid_t loc_id, const char *name, hbool_t follow_link, + H5G_stat_t *statbuf /*out*/); +/** + *------------------------------------------------------------------------- + * \ingroup H5G + * + * \brief Returns a name of an object specified by an index + * + * \fg_loc_id + * \param[in] idx Transient index identifying object + * \param[in,out] name Pointer to user-provided buffer the object name + * \param[in] size Name length + * + * \return Returns the size of the object name if successful, or 0 if no name is + * associated with the group identifier. Otherwise returns a negative + * value. + * + * \deprecated This function is deprecated in favor of the function H5Lget_name_by_idx(). + * + * \details H5Gget_objname_by_idx() returns a name of the object specified by + * the index \p idx in the group \p loc_id. + * + * The group is specified by a group identifier \p loc_id. If + * preferred, a file identifier may be passed in \p loc_id; that file's + * root group will be assumed. + * + * \p idx is the transient index used to iterate through the objects in + * the group. The value of \p idx is any nonnegative number less than + * the total number of objects in the group, which is returned by the + * function H5Gget_num_objs(). Note that this is a transient index; an + * object may have a different index each time a group is opened. + * + * The object name is returned in the user-specified buffer \p name. + * + * If the size of the provided buffer \p name is less or equal the + * actual object name length, the object name is truncated to + * \Code{max_size - 1} characters. + * + * Note that if the size of the object's name is unkown, a preliminary + * call to H5Gget_objname_by_idx() with \p name set to \c NULL will + * return the length of the object's name. A second call to + * H5Gget_objname_by_idx() can then be used to retrieve the actual + * name. + * + * \version 1.8.0 Function deprecated in this release. + * \since 1.6.0 + * + */ +H5_DLL ssize_t H5Gget_objname_by_idx(hid_t loc_id, hsize_t idx, char *name, size_t size); +/** + *------------------------------------------------------------------------- + * \ingroup H5G + * + * \brief Returns the type of an object specified by an index + * + * \fg_loc_id + * \param[in] idx Transient index identifying object + * + * \return Returns the type of the object if successful. Otherwise returns a + * negative value. + * + * \deprecated This function is deprecated in favor of the function H5Oget_info(). + * + * \details H5Gget_objtype_by_idx() returns the type of the object specified by + * the index \p idx in the group \p loc_id. + * + * The group is specified by a group identifier \p loc_id. If + * preferred, a file identifier may be passed in \p loc_id; that file's + * root group will be assumed. + * + * \p idx is the transient index used to iterate through the objects in + * the group. This parameter is described in more detail in the + * discussion of H5Gget_objname_by_idx(). + * + * \version 1.8.0 Function deprecated in this release. + * \version 1.6.0 The function return type changed from \c int to the enumerated + * type \ref H5G_obj_t. + * \since 1.6.0 + * + */ H5_DLL H5G_obj_t H5Gget_objtype_by_idx(hid_t loc_id, hsize_t idx); #endif /* H5_NO_DEPRECATED_SYMBOLS */ |