diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/H5A.c | 266 | ||||
| -rw-r--r-- | src/H5Aint.c | 263 | ||||
| -rw-r--r-- | src/H5Apkg.h | 3 |
3 files changed, 266 insertions, 266 deletions
@@ -63,9 +63,6 @@ typedef struct H5A_iter_cb1 { /* Local Prototypes */ /********************/ -static herr_t H5A__write(H5A_t *attr, const H5T_t *mem_type, const void *buf, hid_t dxpl_id); -static herr_t H5A__read(const H5A_t *attr, const H5T_t *mem_type, void *buf, hid_t dxpl_id); -static ssize_t H5A__get_name(H5A_t *attr, size_t buf_size, char *buf); /*********************/ /* Package Variables */ @@ -608,120 +605,6 @@ done: /*-------------------------------------------------------------------------- NAME - H5A__write - PURPOSE - Actually write out data to an attribute - USAGE - herr_t H5A__write (attr, mem_type, buf) - H5A_t *attr; IN: Attribute to write - const H5T_t *mem_type; IN: Memory datatype of buffer - const void *buf; IN: Buffer of data to write - RETURNS - Non-negative on success/Negative on failure - - DESCRIPTION - This function writes a complete attribute to disk. ---------------------------------------------------------------------------*/ -static herr_t -H5A__write(H5A_t *attr, const H5T_t *mem_type, const void *buf, hid_t dxpl_id) -{ - uint8_t *tconv_buf = NULL; /* datatype conv buffer */ - hbool_t tconv_owned = FALSE; /* Whether the datatype conv buffer is owned by attribute */ - uint8_t *bkg_buf = NULL; /* temp conversion buffer */ - hssize_t snelmts; /* elements in attribute */ - size_t nelmts; /* elements in attribute */ - H5T_path_t *tpath = NULL; /* conversion information*/ - hid_t src_id = -1, dst_id = -1;/* temporary type atoms */ - size_t src_type_size; /* size of source type */ - size_t dst_type_size; /* size of destination type*/ - size_t buf_size; /* desired buffer size */ - herr_t ret_value = SUCCEED; - - FUNC_ENTER_NOAPI_NOINIT_TAG(dxpl_id, attr->oloc.addr, FAIL) - - HDassert(attr); - HDassert(mem_type); - HDassert(buf); - - /* Get # of elements for attribute's dataspace */ - if((snelmts = H5S_GET_EXTENT_NPOINTS(attr->shared->ds)) < 0) - HGOTO_ERROR(H5E_ATTR, H5E_CANTCOUNT, FAIL, "dataspace is invalid") - H5_CHECKED_ASSIGN(nelmts, size_t, snelmts, hssize_t); - - /* If there's actually data elements for the attribute, make a copy of the data passed in */ - if(nelmts > 0) { - /* Get the memory and file datatype sizes */ - src_type_size = H5T_GET_SIZE(mem_type); - dst_type_size = H5T_GET_SIZE(attr->shared->dt); - - /* Convert memory buffer into disk buffer */ - /* Set up type conversion function */ - if(NULL == (tpath = H5T_path_find(mem_type, attr->shared->dt, NULL, NULL, dxpl_id, FALSE))) - HGOTO_ERROR(H5E_ATTR, H5E_UNSUPPORTED, FAIL, "unable to convert between src and dst datatypes") - - /* Check for type conversion required */ - if(!H5T_path_noop(tpath)) { - if((src_id = H5I_register(H5I_DATATYPE, H5T_copy(mem_type, H5T_COPY_ALL), FALSE)) < 0 || - (dst_id = H5I_register(H5I_DATATYPE, H5T_copy(attr->shared->dt, H5T_COPY_ALL), FALSE)) < 0) - HGOTO_ERROR(H5E_ATTR, H5E_CANTREGISTER, FAIL, "unable to register types for conversion") - - /* Get the maximum buffer size needed and allocate it */ - buf_size = nelmts * MAX(src_type_size, dst_type_size); - if(NULL == (tconv_buf = H5FL_BLK_MALLOC(attr_buf, buf_size))) - HGOTO_ERROR(H5E_ATTR, H5E_CANTALLOC, FAIL, "memory allocation failed") - if(NULL == (bkg_buf = H5FL_BLK_CALLOC(attr_buf, buf_size))) - HGOTO_ERROR(H5E_ATTR, H5E_CANTALLOC, FAIL, "memory allocation failed") - - /* Copy the user's data into the buffer for conversion */ - HDmemcpy(tconv_buf, buf, (src_type_size * nelmts)); - - /* Perform datatype conversion */ - if(H5T_convert(tpath, src_id, dst_id, nelmts, (size_t)0, (size_t)0, tconv_buf, bkg_buf, dxpl_id) < 0) - HGOTO_ERROR(H5E_ATTR, H5E_CANTENCODE, FAIL, "datatype conversion failed") - - /* Free the previous attribute data buffer, if there is one */ - if(attr->shared->data) - attr->shared->data = H5FL_BLK_FREE(attr_buf, attr->shared->data); - - /* Set the pointer to the attribute data to the converted information */ - attr->shared->data = tconv_buf; - tconv_owned = TRUE; - } /* end if */ - /* No type conversion necessary */ - else { - HDassert(dst_type_size == src_type_size); - - /* Allocate the attribute buffer, if there isn't one */ - if(attr->shared->data == NULL) - if(NULL == (attr->shared->data = H5FL_BLK_MALLOC(attr_buf, dst_type_size * nelmts))) - HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed") - - /* Copy the attribute data into the user's buffer */ - HDmemcpy(attr->shared->data, buf, (dst_type_size * nelmts)); - } /* end else */ - - /* Modify the attribute in the object header */ - if(H5O_attr_write(&(attr->oloc), dxpl_id, attr) < 0) - HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "unable to modify attribute") - } /* end if */ - -done: - /* Release resources */ - if(src_id >= 0 && H5I_dec_ref(src_id) < 0) - HDONE_ERROR(H5E_ATTR, H5E_CANTDEC, FAIL, "unable to close temporary object") - if(dst_id >= 0 && H5I_dec_ref(dst_id) < 0) - HDONE_ERROR(H5E_ATTR, H5E_CANTDEC, FAIL, "unable to close temporary object") - if(tconv_buf && !tconv_owned) - tconv_buf = H5FL_BLK_FREE(attr_buf, tconv_buf); - if(bkg_buf) - bkg_buf = H5FL_BLK_FREE(attr_buf, bkg_buf); - - FUNC_LEAVE_NOAPI_TAG(ret_value, FAIL) -} /* H5A__write() */ - - -/*-------------------------------------------------------------------------- - NAME H5Aread PURPOSE Read in data from an attribute @@ -765,109 +648,6 @@ done: /*-------------------------------------------------------------------------- NAME - H5A__read - PURPOSE - Actually read in data from an attribute - USAGE - herr_t H5A__read (attr, mem_type, buf) - H5A_t *attr; IN: Attribute to read - const H5T_t *mem_type; IN: Memory datatype of buffer - void *buf; IN: Buffer for data to read - RETURNS - Non-negative on success/Negative on failure - - DESCRIPTION - This function reads a complete attribute from disk. ---------------------------------------------------------------------------*/ -static herr_t -H5A__read(const H5A_t *attr, const H5T_t *mem_type, void *buf, hid_t dxpl_id) -{ - uint8_t *tconv_buf = NULL; /* datatype conv buffer*/ - uint8_t *bkg_buf = NULL; /* background buffer */ - hssize_t snelmts; /* elements in attribute */ - size_t nelmts; /* elements in attribute*/ - H5T_path_t *tpath = NULL; /* type conversion info */ - hid_t src_id = -1, dst_id = -1;/* temporary type atoms*/ - size_t src_type_size; /* size of source type */ - size_t dst_type_size; /* size of destination type */ - size_t buf_size; /* desired buffer size */ - herr_t ret_value = SUCCEED; - - FUNC_ENTER_STATIC - - HDassert(attr); - HDassert(mem_type); - HDassert(buf); - - /* Create buffer for data to store on disk */ - if((snelmts = H5S_GET_EXTENT_NPOINTS(attr->shared->ds)) < 0) - HGOTO_ERROR(H5E_ATTR, H5E_CANTCOUNT, FAIL, "dataspace is invalid") - H5_CHECKED_ASSIGN(nelmts, size_t, snelmts, hssize_t); - - if(nelmts > 0) { - /* Get the memory and file datatype sizes */ - src_type_size = H5T_GET_SIZE(attr->shared->dt); - dst_type_size = H5T_GET_SIZE(mem_type); - - /* Check if the attribute has any data yet, if not, fill with zeroes */ - if(attr->obj_opened && !attr->shared->data) - HDmemset(buf, 0, (dst_type_size * nelmts)); - else { /* Attribute exists and has a value */ - /* Convert memory buffer into disk buffer */ - /* Set up type conversion function */ - if(NULL == (tpath = H5T_path_find(attr->shared->dt, mem_type, NULL, NULL, dxpl_id, FALSE))) - HGOTO_ERROR(H5E_ATTR, H5E_UNSUPPORTED, FAIL, "unable to convert between src and dst datatypes") - - /* Check for type conversion required */ - if(!H5T_path_noop(tpath)) { - if((src_id = H5I_register(H5I_DATATYPE, H5T_copy(attr->shared->dt, H5T_COPY_ALL), FALSE)) < 0 || - (dst_id = H5I_register(H5I_DATATYPE, H5T_copy(mem_type, H5T_COPY_ALL), FALSE)) < 0) - HGOTO_ERROR(H5E_ATTR, H5E_CANTREGISTER, FAIL, "unable to register types for conversion") - - /* Get the maximum buffer size needed and allocate it */ - buf_size = nelmts * MAX(src_type_size, dst_type_size); - if(NULL == (tconv_buf = H5FL_BLK_MALLOC(attr_buf, buf_size))) - HGOTO_ERROR(H5E_ATTR, H5E_NOSPACE, FAIL, "memory allocation failed") - if(NULL == (bkg_buf = H5FL_BLK_CALLOC(attr_buf, buf_size))) - HGOTO_ERROR(H5E_ATTR, H5E_NOSPACE, FAIL, "memory allocation failed") - - /* Copy the attribute data into the buffer for conversion */ - HDmemcpy(tconv_buf, attr->shared->data, (src_type_size * nelmts)); - - /* Perform datatype conversion. */ - if(H5T_convert(tpath, src_id, dst_id, nelmts, (size_t)0, (size_t)0, tconv_buf, bkg_buf, dxpl_id) < 0) - HGOTO_ERROR(H5E_ATTR, H5E_CANTENCODE, FAIL, "datatype conversion failed") - - /* Copy the converted data into the user's buffer */ - HDmemcpy(buf, tconv_buf, (dst_type_size * nelmts)); - } /* end if */ - /* No type conversion necessary */ - else { - HDassert(dst_type_size == src_type_size); - - /* Copy the attribute data into the user's buffer */ - HDmemcpy(buf, attr->shared->data, (dst_type_size * nelmts)); - } /* end else */ - } /* end else */ - } /* end if */ - -done: - /* Release resources */ - if(src_id >= 0 && H5I_dec_ref(src_id) < 0) - HDONE_ERROR(H5E_ATTR, H5E_CANTDEC, FAIL, "unable to close temporary object") - if(dst_id >= 0 && H5I_dec_ref(dst_id) < 0) - HDONE_ERROR(H5E_ATTR, H5E_CANTDEC, FAIL, "unable to close temporary object") - if(tconv_buf) - tconv_buf = H5FL_BLK_FREE(attr_buf, tconv_buf); - if(bkg_buf) - bkg_buf = H5FL_BLK_FREE(attr_buf, bkg_buf); - - FUNC_LEAVE_NOAPI(ret_value) -} /* H5A__read() */ - - -/*-------------------------------------------------------------------------- - NAME H5Aget_space PURPOSE Gets a copy of the dataspace for an attribute @@ -1027,52 +807,6 @@ done: } /* H5Aget_name() */ -/*-------------------------------------------------------------------------- - NAME - H5A__get_name - PURPOSE - Private function for H5Aget_name. Gets a copy of the name for an - attribute - RETURNS - This function returns the length of the attribute's name (which may be - longer than 'buf_size') on success or negative for failure. - DESCRIPTION - This function retrieves the name of an attribute for an attribute ID. - Up to 'buf_size' characters are stored in 'buf' followed by a '\0' string - terminator. If the name of the attribute is longer than 'buf_size'-1, - the string terminator is stored in the last position of the buffer to - properly terminate the string. ---------------------------------------------------------------------------*/ -static ssize_t -H5A__get_name(H5A_t *attr, size_t buf_size, char *buf) -{ - size_t copy_len, nbytes; - ssize_t ret_value; - - FUNC_ENTER_STATIC_NOERR - - /* get the real attribute length */ - nbytes = HDstrlen(attr->shared->name); - HDassert((ssize_t)nbytes >= 0); /*overflow, pretty unlikely --rpm*/ - - /* compute the string length which will fit into the user's buffer */ - copy_len = MIN(buf_size - 1, nbytes); - - /* Copy all/some of the name */ - if(buf && copy_len > 0) { - HDmemcpy(buf, attr->shared->name, copy_len); - - /* Terminate the string */ - buf[copy_len]='\0'; - } /* end if */ - - /* Set return value */ - ret_value = (ssize_t)nbytes; - - FUNC_LEAVE_NOAPI(ret_value) -} /* H5A_get_name() */ - - /*------------------------------------------------------------------------- * Function: H5Aget_name_by_idx * diff --git a/src/H5Aint.c b/src/H5Aint.c index 84f7ecd..9012f6d 100644 --- a/src/H5Aint.c +++ b/src/H5Aint.c @@ -468,6 +468,269 @@ done: } /* H5A_open_by_name() */ +/*-------------------------------------------------------------------------- + NAME + H5A__read + PURPOSE + Actually read in data from an attribute + USAGE + herr_t H5A__read (attr, mem_type, buf) + H5A_t *attr; IN: Attribute to read + const H5T_t *mem_type; IN: Memory datatype of buffer + void *buf; IN: Buffer for data to read + RETURNS + Non-negative on success/Negative on failure + + DESCRIPTION + This function reads a complete attribute from disk. +--------------------------------------------------------------------------*/ +herr_t +H5A__read(const H5A_t *attr, const H5T_t *mem_type, void *buf, hid_t dxpl_id) +{ + uint8_t *tconv_buf = NULL; /* datatype conv buffer*/ + uint8_t *bkg_buf = NULL; /* background buffer */ + hssize_t snelmts; /* elements in attribute */ + size_t nelmts; /* elements in attribute*/ + H5T_path_t *tpath = NULL; /* type conversion info */ + hid_t src_id = -1, dst_id = -1;/* temporary type atoms*/ + size_t src_type_size; /* size of source type */ + size_t dst_type_size; /* size of destination type */ + size_t buf_size; /* desired buffer size */ + herr_t ret_value = SUCCEED; + + FUNC_ENTER_NOAPI_NOINIT + + HDassert(attr); + HDassert(mem_type); + HDassert(buf); + + /* Create buffer for data to store on disk */ + if((snelmts = H5S_GET_EXTENT_NPOINTS(attr->shared->ds)) < 0) + HGOTO_ERROR(H5E_ATTR, H5E_CANTCOUNT, FAIL, "dataspace is invalid") + H5_CHECKED_ASSIGN(nelmts, size_t, snelmts, hssize_t); + + if(nelmts > 0) { + /* Get the memory and file datatype sizes */ + src_type_size = H5T_GET_SIZE(attr->shared->dt); + dst_type_size = H5T_GET_SIZE(mem_type); + + /* Check if the attribute has any data yet, if not, fill with zeroes */ + if(attr->obj_opened && !attr->shared->data) + HDmemset(buf, 0, (dst_type_size * nelmts)); + else { /* Attribute exists and has a value */ + /* Convert memory buffer into disk buffer */ + /* Set up type conversion function */ + if(NULL == (tpath = H5T_path_find(attr->shared->dt, mem_type, NULL, NULL, dxpl_id, FALSE))) + HGOTO_ERROR(H5E_ATTR, H5E_UNSUPPORTED, FAIL, "unable to convert between src and dst datatypes") + + /* Check for type conversion required */ + if(!H5T_path_noop(tpath)) { + if((src_id = H5I_register(H5I_DATATYPE, H5T_copy(attr->shared->dt, H5T_COPY_ALL), FALSE)) < 0 || + (dst_id = H5I_register(H5I_DATATYPE, H5T_copy(mem_type, H5T_COPY_ALL), FALSE)) < 0) + HGOTO_ERROR(H5E_ATTR, H5E_CANTREGISTER, FAIL, "unable to register types for conversion") + + /* Get the maximum buffer size needed and allocate it */ + buf_size = nelmts * MAX(src_type_size, dst_type_size); + if(NULL == (tconv_buf = H5FL_BLK_MALLOC(attr_buf, buf_size))) + HGOTO_ERROR(H5E_ATTR, H5E_NOSPACE, FAIL, "memory allocation failed") + if(NULL == (bkg_buf = H5FL_BLK_CALLOC(attr_buf, buf_size))) + HGOTO_ERROR(H5E_ATTR, H5E_NOSPACE, FAIL, "memory allocation failed") + + /* Copy the attribute data into the buffer for conversion */ + HDmemcpy(tconv_buf, attr->shared->data, (src_type_size * nelmts)); + + /* Perform datatype conversion. */ + if(H5T_convert(tpath, src_id, dst_id, nelmts, (size_t)0, (size_t)0, tconv_buf, bkg_buf, dxpl_id) < 0) + HGOTO_ERROR(H5E_ATTR, H5E_CANTENCODE, FAIL, "datatype conversion failed") + + /* Copy the converted data into the user's buffer */ + HDmemcpy(buf, tconv_buf, (dst_type_size * nelmts)); + } /* end if */ + /* No type conversion necessary */ + else { + HDassert(dst_type_size == src_type_size); + + /* Copy the attribute data into the user's buffer */ + HDmemcpy(buf, attr->shared->data, (dst_type_size * nelmts)); + } /* end else */ + } /* end else */ + } /* end if */ + +done: + /* Release resources */ + if(src_id >= 0 && H5I_dec_ref(src_id) < 0) + HDONE_ERROR(H5E_ATTR, H5E_CANTDEC, FAIL, "unable to close temporary object") + if(dst_id >= 0 && H5I_dec_ref(dst_id) < 0) + HDONE_ERROR(H5E_ATTR, H5E_CANTDEC, FAIL, "unable to close temporary object") + if(tconv_buf) + tconv_buf = H5FL_BLK_FREE(attr_buf, tconv_buf); + if(bkg_buf) + bkg_buf = H5FL_BLK_FREE(attr_buf, bkg_buf); + + FUNC_LEAVE_NOAPI(ret_value) +} /* H5A__read() */ + + +/*-------------------------------------------------------------------------- + NAME + H5A__write + PURPOSE + Actually write out data to an attribute + USAGE + herr_t H5A__write (attr, mem_type, buf) + H5A_t *attr; IN: Attribute to write + const H5T_t *mem_type; IN: Memory datatype of buffer + const void *buf; IN: Buffer of data to write + RETURNS + Non-negative on success/Negative on failure + + DESCRIPTION + This function writes a complete attribute to disk. +--------------------------------------------------------------------------*/ +herr_t +H5A__write(H5A_t *attr, const H5T_t *mem_type, const void *buf, hid_t dxpl_id) +{ + uint8_t *tconv_buf = NULL; /* datatype conv buffer */ + hbool_t tconv_owned = FALSE; /* Whether the datatype conv buffer is owned by attribute */ + uint8_t *bkg_buf = NULL; /* temp conversion buffer */ + hssize_t snelmts; /* elements in attribute */ + size_t nelmts; /* elements in attribute */ + H5T_path_t *tpath = NULL; /* conversion information*/ + hid_t src_id = -1, dst_id = -1;/* temporary type atoms */ + size_t src_type_size; /* size of source type */ + size_t dst_type_size; /* size of destination type*/ + size_t buf_size; /* desired buffer size */ + herr_t ret_value = SUCCEED; + + FUNC_ENTER_NOAPI_NOINIT_TAG(dxpl_id, attr->oloc.addr, FAIL) + + HDassert(attr); + HDassert(mem_type); + HDassert(buf); + + /* Get # of elements for attribute's dataspace */ + if((snelmts = H5S_GET_EXTENT_NPOINTS(attr->shared->ds)) < 0) + HGOTO_ERROR(H5E_ATTR, H5E_CANTCOUNT, FAIL, "dataspace is invalid") + H5_CHECKED_ASSIGN(nelmts, size_t, snelmts, hssize_t); + + /* If there's actually data elements for the attribute, make a copy of the data passed in */ + if(nelmts > 0) { + /* Get the memory and file datatype sizes */ + src_type_size = H5T_GET_SIZE(mem_type); + dst_type_size = H5T_GET_SIZE(attr->shared->dt); + + /* Convert memory buffer into disk buffer */ + /* Set up type conversion function */ + if(NULL == (tpath = H5T_path_find(mem_type, attr->shared->dt, NULL, NULL, dxpl_id, FALSE))) + HGOTO_ERROR(H5E_ATTR, H5E_UNSUPPORTED, FAIL, "unable to convert between src and dst datatypes") + + /* Check for type conversion required */ + if(!H5T_path_noop(tpath)) { + if((src_id = H5I_register(H5I_DATATYPE, H5T_copy(mem_type, H5T_COPY_ALL), FALSE)) < 0 || + (dst_id = H5I_register(H5I_DATATYPE, H5T_copy(attr->shared->dt, H5T_COPY_ALL), FALSE)) < 0) + HGOTO_ERROR(H5E_ATTR, H5E_CANTREGISTER, FAIL, "unable to register types for conversion") + + /* Get the maximum buffer size needed and allocate it */ + buf_size = nelmts * MAX(src_type_size, dst_type_size); + if(NULL == (tconv_buf = H5FL_BLK_MALLOC(attr_buf, buf_size))) + HGOTO_ERROR(H5E_ATTR, H5E_CANTALLOC, FAIL, "memory allocation failed") + if(NULL == (bkg_buf = H5FL_BLK_CALLOC(attr_buf, buf_size))) + HGOTO_ERROR(H5E_ATTR, H5E_CANTALLOC, FAIL, "memory allocation failed") + + /* Copy the user's data into the buffer for conversion */ + HDmemcpy(tconv_buf, buf, (src_type_size * nelmts)); + + /* Perform datatype conversion */ + if(H5T_convert(tpath, src_id, dst_id, nelmts, (size_t)0, (size_t)0, tconv_buf, bkg_buf, dxpl_id) < 0) + HGOTO_ERROR(H5E_ATTR, H5E_CANTENCODE, FAIL, "datatype conversion failed") + + /* Free the previous attribute data buffer, if there is one */ + if(attr->shared->data) + attr->shared->data = H5FL_BLK_FREE(attr_buf, attr->shared->data); + + /* Set the pointer to the attribute data to the converted information */ + attr->shared->data = tconv_buf; + tconv_owned = TRUE; + } /* end if */ + /* No type conversion necessary */ + else { + HDassert(dst_type_size == src_type_size); + + /* Allocate the attribute buffer, if there isn't one */ + if(attr->shared->data == NULL) + if(NULL == (attr->shared->data = H5FL_BLK_MALLOC(attr_buf, dst_type_size * nelmts))) + HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed") + + /* Copy the attribute data into the user's buffer */ + HDmemcpy(attr->shared->data, buf, (dst_type_size * nelmts)); + } /* end else */ + + /* Modify the attribute in the object header */ + if(H5O_attr_write(&(attr->oloc), dxpl_id, attr) < 0) + HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "unable to modify attribute") + } /* end if */ + +done: + /* Release resources */ + if(src_id >= 0 && H5I_dec_ref(src_id) < 0) + HDONE_ERROR(H5E_ATTR, H5E_CANTDEC, FAIL, "unable to close temporary object") + if(dst_id >= 0 && H5I_dec_ref(dst_id) < 0) + HDONE_ERROR(H5E_ATTR, H5E_CANTDEC, FAIL, "unable to close temporary object") + if(tconv_buf && !tconv_owned) + tconv_buf = H5FL_BLK_FREE(attr_buf, tconv_buf); + if(bkg_buf) + bkg_buf = H5FL_BLK_FREE(attr_buf, bkg_buf); + + FUNC_LEAVE_NOAPI_TAG(ret_value, FAIL) +} /* H5A__write() */ + + +/*-------------------------------------------------------------------------- + NAME + H5A__get_name + PURPOSE + Private function for H5Aget_name. Gets a copy of the name for an + attribute + RETURNS + This function returns the length of the attribute's name (which may be + longer than 'buf_size') on success or negative for failure. + DESCRIPTION + This function retrieves the name of an attribute for an attribute ID. + Up to 'buf_size' characters are stored in 'buf' followed by a '\0' string + terminator. If the name of the attribute is longer than 'buf_size'-1, + the string terminator is stored in the last position of the buffer to + properly terminate the string. +--------------------------------------------------------------------------*/ +ssize_t +H5A__get_name(H5A_t *attr, size_t buf_size, char *buf) +{ + size_t copy_len, nbytes; + ssize_t ret_value; + + FUNC_ENTER_NOAPI_NOINIT_NOERR + + /* get the real attribute length */ + nbytes = HDstrlen(attr->shared->name); + HDassert((ssize_t)nbytes >= 0); /*overflow, pretty unlikely --rpm*/ + + /* compute the string length which will fit into the user's buffer */ + copy_len = MIN(buf_size - 1, nbytes); + + /* Copy all/some of the name */ + if(buf && copy_len > 0) { + HDmemcpy(buf, attr->shared->name, copy_len); + + /* Terminate the string */ + buf[copy_len]='\0'; + } /* end if */ + + /* Set return value */ + ret_value = (ssize_t)nbytes; + + FUNC_LEAVE_NOAPI(ret_value) +} /* H5A__get_name() */ + + /*------------------------------------------------------------------------- * Function: H5A_get_space * diff --git a/src/H5Apkg.h b/src/H5Apkg.h index f656214..d3fcd53 100644 --- a/src/H5Apkg.h +++ b/src/H5Apkg.h @@ -206,6 +206,9 @@ H5_DLL herr_t H5A_rename_by_name(H5G_loc_t loc, const char *obj_name, const char const char *new_attr_name, hid_t lapl_id, hid_t dxpl_id); H5_DLL htri_t H5A_exists_by_name(H5G_loc_t loc, const char *obj_name, const char *attr_name, hid_t lapl_id, hid_t dxpl_id); +H5_DLL herr_t H5A__write(H5A_t *attr, const H5T_t *mem_type, const void *buf, hid_t dxpl_id); +H5_DLL herr_t H5A__read(const H5A_t *attr, const H5T_t *mem_type, void *buf, hid_t dxpl_id); +H5_DLL ssize_t H5A__get_name(H5A_t *attr, size_t buf_size, char *buf); /* Attribute "dense" storage routines */ H5_DLL herr_t H5A_dense_create(H5F_t *f, hid_t dxpl_id, H5O_ainfo_t *ainfo); |