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+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Copyright by the Board of Trustees of the University of Illinois. *
+ * All rights reserved. *
+ * *
+ * This file is part of HDF5. The full HDF5 copyright notice, including *
+ * terms governing use, modification, and redistribution, is contained in *
+ * the files COPYING and Copyright.html. COPYING can be found at the root *
+ * of the source code distribution tree; Copyright.html can be found at the *
+ * root level of an installed copy of the electronic HDF5 document set and *
+ * is linked from the top-level documents page. It can also be found at *
+ * http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
+ * access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/*
+ * Module Info: This module contains the functionality for enumerated datatypes
+ * in the H5T interface.
+ */
+
+#define H5T_PACKAGE /*suppress error about including H5Tpkg */
+
+#include "H5private.h" /*generic functions */
+#include "H5Eprivate.h" /*error handling */
+#include "H5FLprivate.h" /*Free Lists */
+#include "H5Iprivate.h" /*ID functions */
+#include "H5MMprivate.h" /*memory management */
+#include "H5Tpkg.h" /*data-type functions */
+
+#define PABLO_MASK H5Tenum_mask
+
+/* Interface initialization */
+static int interface_initialize_g = 0;
+#define INTERFACE_INIT H5T_init_enum_interface
+static herr_t H5T_init_enum_interface(void);
+
+/* Declare extern the free list for H5T_t's */
+H5FL_EXTERN(H5T_t);
+
+/* Static local functions */
+static char *H5T_enum_nameof(H5T_t *dt, void *value, char *name/*out*/,
+ size_t size);
+static herr_t H5T_enum_valueof(H5T_t *dt, const char *name,
+ void *value/*out*/);
+
+
+/*--------------------------------------------------------------------------
+NAME
+ H5T_init_enum_interface -- Initialize interface-specific information
+USAGE
+ herr_t H5T_init_enum_interface()
+
+RETURNS
+ Non-negative on success/Negative on failure
+DESCRIPTION
+ Initializes any interface-specific data or routines. (Just calls
+ H5T_init_iterface currently).
+
+--------------------------------------------------------------------------*/
+static herr_t
+H5T_init_enum_interface(void)
+{
+ FUNC_ENTER_NOINIT(H5T_init_enum_interface);
+
+ FUNC_LEAVE_NOAPI(H5T_init_interface());
+} /* H5T_init_enum_interface() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5Tenum_create
+ *
+ * Purpose: Create a new enumeration data type based on the specified
+ * TYPE, which must be an integer type.
+ *
+ * Return: Success: ID of new enumeration data type
+ *
+ * Failure: Negative
+ *
+ * Programmer: Robb Matzke
+ * Tuesday, December 22, 1998
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+hid_t
+H5Tenum_create(hid_t parent_id)
+{
+ H5T_t *parent = NULL; /*base integer data type */
+ H5T_t *dt = NULL; /*new enumeration data type */
+ hid_t ret_value; /*return value */
+
+ FUNC_ENTER_API(H5Tenum_create, FAIL);
+ H5TRACE1("i","i",parent_id);
+
+ /* Check args */
+ if (NULL==(parent=H5I_object_verify(parent_id,H5I_DATATYPE)) || H5T_INTEGER!=parent->type)
+ HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an integer data type");
+
+ /* Build new type */
+ if((dt=H5T_enum_create(parent))==NULL)
+ HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "cannot create enum type");
+ /* Atomize the type */
+ if ((ret_value=H5I_register(H5I_DATATYPE, dt))<0)
+ HGOTO_ERROR(H5E_DATATYPE, H5E_CANTREGISTER, FAIL, "unable to register data type atom");
+
+done:
+ FUNC_LEAVE_API(ret_value);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5T_enum_create
+ *
+ * Purpose: Private function for H5Tenum_create. Create a new
+ * enumeration data type based on the specified
+ * TYPE, which must be an integer type.
+ *
+ * Return: Success: new enumeration data type
+ *
+ * Failure: NULL
+ *
+ * Programmer: Raymond Lu
+ * October 9, 2002
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+H5T_t *
+H5T_enum_create(H5T_t *parent)
+{
+ H5T_t *ret_value; /*new enumeration data type */
+
+ FUNC_ENTER_NOAPI(H5T_enum_create, NULL);
+
+ assert(parent);
+
+ /* Build new type */
+ if (NULL==(ret_value = H5FL_CALLOC(H5T_t)))
+ HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed");
+ ret_value->type = H5T_ENUM;
+ ret_value->parent = H5T_copy(parent, H5T_COPY_ALL);
+ assert(ret_value->parent);
+ ret_value->size = ret_value->parent->size;
+ ret_value->ent.header = HADDR_UNDEF;
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5Tenum_insert
+ *
+ * Purpose: Insert a new enumeration data type member into an enumeration
+ * type. TYPE is the enumeration type, NAME is the name of the
+ * new member, and VALUE points to the value of the new member.
+ * The NAME and VALUE must both be unique within the TYPE. VALUE
+ * points to data which is of the data type defined when the
+ * enumeration type was created.
+ *
+ * Return: Success: non-negative
+ *
+ * Failure: negative
+ *
+ * Programmer: Robb Matzke
+ * Wednesday, December 23, 1998
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5Tenum_insert(hid_t type, const char *name, void *value)
+{
+ H5T_t *dt=NULL;
+ herr_t ret_value=SUCCEED; /* Return value */
+
+ FUNC_ENTER_API(H5Tenum_insert, FAIL);
+ H5TRACE3("e","isx",type,name,value);
+
+ /* Check args */
+ if (NULL==(dt=H5I_object_verify(type,H5I_DATATYPE)))
+ HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data type");
+ if (H5T_ENUM!=dt->type)
+ HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an enumeration data type");
+ if (!name || !*name)
+ HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name specified");
+ if (!value)
+ HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no value specified");
+
+ /* Do work */
+ if (H5T_enum_insert(dt, name, value)<0)
+ HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to insert new enumeration member");
+
+done:
+ FUNC_LEAVE_API(ret_value);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5T_enum_insert
+ *
+ * Purpose: Insert a new member having a NAME and VALUE into an
+ * enumeration data TYPE. The NAME and VALUE must both be
+ * unique. The VALUE points to data of the data type defined for
+ * the enumeration base type.
+ *
+ * Return: Success: non-negative
+ *
+ * Failure: negative
+ *
+ * Programmer: Robb Matzke
+ * Wednesday, December 23, 1998
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5T_enum_insert(H5T_t *dt, const char *name, void *value)
+{
+ int i;
+ char **names=NULL;
+ uint8_t *values=NULL;
+ herr_t ret_value=SUCCEED; /* Return value */
+
+ FUNC_ENTER_NOAPI(H5T_enum_insert, FAIL);
+
+ assert(dt);
+ assert(name && *name);
+ assert(value);
+
+ /* The name and value had better not already exist */
+ for (i=0; i<dt->u.enumer.nmembs; i++) {
+ if (!HDstrcmp(dt->u.enumer.name[i], name))
+ HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "name redefinition");
+ if (!HDmemcmp(dt->u.enumer.value+i*dt->size, value, dt->size))
+ HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "value redefinition");
+ }
+
+ /* Increase table sizes */
+ if (dt->u.enumer.nmembs >= dt->u.enumer.nalloc) {
+ int n = MAX(32, 2*dt->u.enumer.nalloc);
+ if (NULL==(names=H5MM_realloc(dt->u.enumer.name, n*sizeof(char*))))
+ HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed");
+ dt->u.enumer.name = names;
+
+ if (NULL==(values=H5MM_realloc(dt->u.enumer.value, n*dt->size)))
+ HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed");
+ dt->u.enumer.value = values;
+ dt->u.enumer.nalloc = n;
+ }
+
+ /* Insert new member at end of member arrays */
+ dt->u.enumer.sorted = H5T_SORT_NONE;
+ i = dt->u.enumer.nmembs++;
+ dt->u.enumer.name[i] = H5MM_xstrdup(name);
+ HDmemcpy(dt->u.enumer.value+i*dt->size, value, dt->size);
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5Tget_member_value
+ *
+ * Purpose: Return the value for an enumeration data type member.
+ *
+ * Return: Success: non-negative with the member value copied
+ * into the memory pointed to by VALUE.
+ *
+ * Failure: negative, VALUE memory is undefined.
+ *
+ * Programmer: Robb Matzke
+ * Wednesday, December 23, 1998
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5Tget_member_value(hid_t type, int membno, void *value/*out*/)
+{
+ H5T_t *dt=NULL;
+ herr_t ret_value=SUCCEED; /* Return value */
+
+ FUNC_ENTER_API(H5Tget_member_value, FAIL);
+ H5TRACE3("e","iIsx",type,membno,value);
+
+ if (NULL==(dt=H5I_object_verify(type,H5I_DATATYPE)))
+ HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data type");
+ if (H5T_ENUM!=dt->type)
+ HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "operation not defined for data type class");
+ if (membno<0 || membno>=dt->u.enumer.nmembs)
+ HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid member number");
+ if (!value)
+ HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "null value buffer");
+
+ if (H5T_get_member_value(dt, membno, value)<0)
+ HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "unable to get member value");
+done:
+ FUNC_LEAVE_API(ret_value);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5T_get_member_value
+ *
+ * Purpose: Private function for H5T_get_member_value. Return the
+ * value for an enumeration data type member.
+ *
+ * Return: Success: non-negative with the member value copied
+ * into the memory pointed to by VALUE.
+ *
+ * Failure: negative, VALUE memory is undefined.
+ *
+ * Programmer: Raymond Lu
+ * October 9, 2002
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5T_get_member_value(H5T_t *dt, int membno, void *value/*out*/)
+{
+ herr_t ret_value=SUCCEED; /* Return value */
+
+ FUNC_ENTER_NOAPI(H5T_get_member_value, FAIL);
+
+ assert(dt);
+ assert(value);
+
+ HDmemcpy(value, dt->u.enumer.value + membno*dt->size, dt->size);
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value);
+}
+
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5Tenum_nameof
+ *
+ * Purpose: Finds the symbol name that corresponds to the specified VALUE
+ * of an enumeration data type TYPE. At most SIZE characters of
+ * the symbol name are copied into the NAME buffer. If the
+ * entire symbol anem and null terminator do not fit in the NAME
+ * buffer then as many characters as possible are copied (not
+ * null terminated) and the function fails.
+ *
+ * Return: Success: Non-negative.
+ *
+ * Failure: Negative, first character of NAME is set to
+ * null if SIZE allows it.
+ *
+ * Programmer: Robb Matzke
+ * Monday, January 4, 1999
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5Tenum_nameof(hid_t type, void *value, char *name/*out*/, size_t size)
+{
+ H5T_t *dt = NULL;
+ herr_t ret_value=SUCCEED; /* Return value */
+
+ FUNC_ENTER_API(H5Tenum_nameof, FAIL);
+ H5TRACE4("e","ixxz",type,value,name,size);
+
+ /* Check args */
+ if (NULL==(dt=H5I_object_verify(type,H5I_DATATYPE)))
+ HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data type");
+ if (H5T_ENUM!=dt->type)
+ HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an enumeration data type");
+ if (!value)
+ HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no value supplied");
+ if (!name)
+ HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name buffer supplied");
+
+ if (NULL==H5T_enum_nameof(dt, value, name, size))
+ HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "nameof query failed");
+
+done:
+ FUNC_LEAVE_API(ret_value);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5T_enum_nameof
+ *
+ * Purpose: Finds the symbol name that corresponds the the specified
+ * VALUE of an enumeration data type DT. At most SIZE characters
+ * of the symbol name are copied into the NAME buffer. If the
+ * entire symbol name and null terminator do not fit in the NAME
+ * buffer then as many characters as possible are copied and the
+ * function returns failure.
+ *
+ * If NAME is the null pointer and SIZE is zero then enough
+ * space is allocated to hold the result and a pointer to that
+ * memory is returned.
+ *
+ * Return: Success: Pointer to NAME
+ *
+ * Failure: NULL, name[0] is set to null.
+ *
+ * Programmer: Robb Matzke
+ * Monday, January 4, 1999
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static char *
+H5T_enum_nameof(H5T_t *dt, void *value, char *name/*out*/, size_t size)
+{
+ int lt, md, rt; /*indices for binary search */
+ int cmp=(-1); /*comparison result */
+ char *ret_value; /* Return value */
+
+ FUNC_ENTER_NOAPI(H5T_enum_nameof, NULL);
+
+ /* Check args */
+ assert(dt && H5T_ENUM==dt->type);
+ assert(value);
+ assert(name || 0==size);
+ if (name && size>0) *name = '\0';
+
+ /* Sanity check */
+ if (dt->u.enumer.nmembs == 0)
+ HGOTO_ERROR(H5E_DATATYPE, H5E_NOTFOUND, NULL, "datatype has no members");
+
+ /* Do a binary search over the values to find the correct one */
+ H5T_sort_value(dt, NULL);
+ lt = 0;
+ rt = dt->u.enumer.nmembs;
+ md = -1;
+
+ while (lt<rt) {
+ md = (lt+rt)/2;
+ cmp = HDmemcmp(value, dt->u.enumer.value+md*dt->size, dt->size);
+ if (cmp<0) {
+ rt = md;
+ } else if (cmp>0) {
+ lt = md+1;
+ } else {
+ break;
+ }
+ }
+ /* Value was not yet defined. This fixes bug # 774, 2002/06/05 EIP */
+ if (cmp!=0)
+ HGOTO_ERROR(H5E_DATATYPE, H5E_NOTFOUND, NULL, "value is currently not defined");
+
+ /* Save result name */
+ if (!name && NULL==(name=H5MM_malloc(HDstrlen(dt->u.enumer.name[md])+1)))
+ HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed");
+ HDstrncpy(name, dt->u.enumer.name[md], size);
+ if (HDstrlen(dt->u.enumer.name[md])>=size)
+ HGOTO_ERROR(H5E_DATATYPE, H5E_NOSPACE, NULL, "name has been truncated");
+
+ /* Set return value */
+ ret_value=name;
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5Tenum_valueof
+ *
+ * Purpose: Finds the value that corresponds to the specified NAME f an
+ * enumeration TYPE. The VALUE argument should be at least as
+ * large as the value of H5Tget_size(type) in order to hold the
+ * result.
+ *
+ * Return: Success: Non-negative
+ *
+ * Failure: Negative
+ *
+ * Programmer: Robb Matzke
+ * Monday, January 4, 1999
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5Tenum_valueof(hid_t type, const char *name, void *value/*out*/)
+{
+ H5T_t *dt = NULL;
+ herr_t ret_value=SUCCEED; /* Return value */
+
+ FUNC_ENTER_API(H5Tenum_valueof, FAIL);
+ H5TRACE3("e","isx",type,name,value);
+
+ /* Check args */
+ if (NULL==(dt=H5I_object_verify(type,H5I_DATATYPE)))
+ HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data type");
+ if (H5T_ENUM!=dt->type)
+ HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an enumeration data type");
+ if (!name || !*name)
+ HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name");
+ if (!value)
+ HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no value buffer");
+
+ if (H5T_enum_valueof(dt, name, value)<0)
+ HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "valueof query failed");
+
+done:
+ FUNC_LEAVE_API(ret_value);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5T_enum_valueof
+ *
+ * Purpose: Finds the value that corresponds the the specified symbol
+ * NAME of an enumeration data type DT and copy it to the VALUE
+ * result buffer. The VALUE should be allocated by the caller to
+ * be large enough for the result.
+ *
+ * Return: Success: Non-negative, value stored in VALUE.
+ *
+ * Failure: Negative, VALUE is undefined.
+ *
+ * Programmer: Robb Matzke
+ * Monday, January 4, 1999
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5T_enum_valueof(H5T_t *dt, const char *name, void *value/*out*/)
+{
+ int lt, md, rt; /*indices for binary search */
+ int cmp=(-1); /*comparison result */
+ herr_t ret_value=SUCCEED; /* Return value */
+
+ FUNC_ENTER_NOAPI(H5T_enum_valueof, FAIL);
+
+ /* Check args */
+ assert(dt && H5T_ENUM==dt->type);
+ assert(name && *name);
+ assert(value);
+
+ /* Sanity check */
+ if (dt->u.enumer.nmembs == 0)
+ HGOTO_ERROR(H5E_DATATYPE, H5E_NOTFOUND, FAIL, "datatype has no members");
+
+ /* Do a binary search over the names to find the correct one */
+ H5T_sort_name(dt, NULL);
+ lt = 0;
+ rt = dt->u.enumer.nmembs;
+ md = -1;
+
+ while (lt<rt) {
+ md = (lt+rt)/2;
+ cmp = HDstrcmp(name, dt->u.enumer.name[md]);
+ if (cmp<0) {
+ rt = md;
+ } else if (cmp>0) {
+ lt = md+1;
+ } else {
+ break;
+ }
+ }
+ /* Value was not yet defined. This fixes bug # 774, 2002/06/05 EIP */
+ if (cmp!=0)
+ HGOTO_ERROR(H5E_DATATYPE, H5E_NOTFOUND, FAIL, "string doesn't exist in the enumeration type");
+
+ HDmemcpy(value, dt->u.enumer.value+md*dt->size, dt->size);
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value);
+}
+
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