"""Utilities needed to emulate Python's interactive interpreter. """ # Inspired by similar code by Jeff Epler and Fredrik Lundh. import sys import traceback import argparse from codeop import CommandCompiler, compile_command __all__ = ["InteractiveInterpreter", "InteractiveConsole", "interact", "compile_command"] class InteractiveInterpreter: """Base class for InteractiveConsole. This class deals with parsing and interpreter state (the user's namespace); it doesn't deal with input buffering or prompting or input file naming (the filename is always passed in explicitly). """ def __init__(self, locals=None): """Constructor. The optional 'locals' argument specifies the dictionary in which code will be executed; it defaults to a newly created dictionary with key "__name__" set to "__console__" and key "__doc__" set to None. """ if locals is None: locals = {"__name__": "__console__", "__doc__": None} self.locals = locals self.compile = CommandCompiler() def runsource(self, source, filename="", symbol="single"): """Compile and run some source in the interpreter. Arguments are as for compile_command(). One several things can happen: 1) The input is incorrect; compile_command() raised an exception (SyntaxError or OverflowError). A syntax traceback will be printed by calling the showsyntaxerror() method. 2) The input is incomplete, and more input is required; compile_command() returned None. Nothing happens. 3) The input is complete; compile_command() returned a code object. The code is executed by calling self.runcode() (which also handles run-time exceptions, except for SystemExit). The return value is True in case 2, False in the other cases (unless an exception is raised). The return value can be used to decide whether to use sys.ps1 or sys.ps2 to prompt the next line. """ try: code = self.compile(source, filename, symbol) except (OverflowError, SyntaxError, ValueError): # Case 1 self.showsyntaxerror(filename) return False if code is None: # Case 2 return True # Case 3 self.runcode(code) return False def runcode(self, code): """Execute a code object. When an exception occurs, self.showtraceback() is called to display a traceback. All exceptions are caught except SystemExit, which is reraised. A note about KeyboardInterrupt: this exception may occur elsewhere in this code, and may not always be caught. The caller should be prepared to deal with it. """ try: exec(code, self.locals) except SystemExit: raise except: self.showtraceback() def showsyntaxerror(self, filename=None): """Display the syntax error that just occurred. This doesn't display a stack trace because there isn't one. If a filename is given, it is stuffed in the exception instead of what was there before (because Python's parser always uses "" when reading from a string). The output is written by self.write(), below. """ type, value, tb = sys.exc_info() sys.last_type = type sys.last_value = value sys.last_traceback = tb if filename and type is SyntaxError: # Work hard to stuff the correct filename in the exception try: msg, (dummy_filename, lineno, offset, line) = value.args except ValueError: # Not the format we expect; leave it alone pass else: # Stuff in the right filename value = SyntaxError(msg, (filename, lineno, offset, line)) sys.last_value = value if sys.excepthook is sys.__excepthook__: lines = traceback.format_exception_only(type, value) self.write(''.join(lines)) else: # If someone has set sys.excepthook, we let that take precedence # over self.write sys.excepthook(type, value, tb) def showtraceback(self): """Display the exception that just occurred. We remove the first stack item because it is our own code. The output is written by self.write(), below. """ sys.last_type, sys.last_value, last_tb = ei = sys.exc_info() sys.last_traceback = last_tb try: lines = traceback.format_exception(ei[0], ei[1], last_tb.tb_next) if sys.excepthook is sys.__excepthook__: self.write(''.join(lines)) else: # If someone has set sys.excepthook, we let that take precedence # over self.write sys.excepthook(ei[0], ei[1], last_tb) finally: last_tb = ei = None def write(self, data): """Write a string. The base implementation writes to sys.stderr; a subclass may replace this with a different implementation. """ sys.stderr.write(data) class InteractiveConsole(InteractiveInterpreter): """Closely emulate the behavior of the interactive Python interpreter. This class builds on InteractiveInterpreter and adds prompting using the familiar sys.ps1 and sys.ps2, and input buffering. """ def __init__(self, locals=None, filename=""): """Constructor. The optional locals argument will be passed to the InteractiveInterpreter base class. The optional filename argument should specify the (file)name of the input stream; it will show up in tracebacks. """ InteractiveInterpreter.__init__(self, locals) self.filename = filename self.resetbuffer() def resetbuffer(self): """Reset the input buffer.""" self.buffer = [] def interact(self, banner=None, exitmsg=None): """Closely emulate the interactive Python console. The optional banner argument specifies the banner to print before the first interaction; by default it prints a banner similar to the one printed by the real Python interpreter, followed by the current class name in parentheses (so as not to confuse this with the real interpreter -- since it's so close!). The optional exitmsg argument specifies the exit message printed when exiting. Pass the empty string to suppress printing an exit message. If exitmsg is not given or None, a default message is printed. """ try: sys.ps1 except AttributeError: sys.ps1 = ">>> " try: sys.ps2 except AttributeError: sys.ps2 = "... " cprt = 'Type "help", "copyright", "credits" or "license" for more information.' if banner is None: self.write("Python %s on %s\n%s\n(%s)\n" % (sys.version, sys.platform, cprt, self.__class__.__name__)) elif banner: self.write("%s\n" % str(banner)) more = 0 while 1: try: if more: prompt = sys.ps2 else: prompt = sys.ps1 try: line = self.raw_input(prompt) except EOFError: self.write("\n") break else: more = self.push(line) except KeyboardInterrupt: self.write("\nKeyboardInterrupt\n") self.resetbuffer() more = 0 if exitmsg is None: self.write('now exiting %s...\n' % self.__class__.__name__) elif exitmsg != '': self.write('%s\n' % exitmsg) def push(self, line): """Push a line to the interpreter. The line should not have a trailing newline; it may have internal newlines. The line is appended to a buffer and the interpreter's runsource() method is called with the concatenated contents of the buffer as source. If this indicates that the command was executed or invalid, the buffer is reset; otherwise, the command is incomplete, and the buffer is left as it was after the line was appended. The return value is 1 if more input is required, 0 if the line was dealt with in some way (this is the same as runsource()). """ self.buffer.append(line) source = "\n".join(self.buffer) more = self.runsource(source, self.filename) if not more: self.resetbuffer() return more def raw_input(self, prompt=""): """Write a prompt and read a line. The returned line does not include the trailing newline. When the user enters the EOF key sequence, EOFError is raised. The base implementation uses the built-in function input(); a subclass may replace this with a different implementation. """ return input(prompt) def interact(banner=None, readfunc=None, local=None, exitmsg=None): """Closely emulate the interactive Python interpreter. This is a backwards compatible interface to the InteractiveConsole class. When readfunc is not specified, it attempts to import the readline module to enable GNU readline if it is available. Arguments (all optional, all default to None): banner -- passed to InteractiveConsole.interact() readfunc -- if not None, replaces InteractiveConsole.raw_input() local -- passed to InteractiveInterpreter.__init__() exitmsg -- passed to InteractiveConsole.interact() """ console = InteractiveConsole(local) if readfunc is not None: console.raw_input = readfunc else: try: import readline except ImportError: pass console.interact(banner, exitmsg) if __name__ == "__main__": parser = argparse.ArgumentParser() parser.add_argument('-q', action='store_true', help="don't print version and copyright messages") args = parser.parse_args() if args.q or sys.flags.quiet: banner = '' else: banner = None interact(banner) 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 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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. *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/* Programmer:  Quincey Koziol <koziol@ncsa.uiuc.ued>
 *              Friday, May 29, 1998
 *
 * Purpose:	Dataspace selection functions.
 */

#define H5S_PACKAGE		/*suppress error about including H5Spkg	  */

/* Pablo information */
/* (Put before include files to avoid problems with inline functions) */
#define PABLO_MASK      H5Sselect_mask

#include "H5private.h"		/* Generic Functions			  */
#include "H5Dprivate.h"         /* Datasets (for their properties) */
#include "H5Eprivate.h"		/* Error handling		  */
#include "H5FLprivate.h"	/* Free Lists	  */
#include "H5Iprivate.h"		/* ID Functions		  */
#include "H5Spkg.h"		/* Dataspace functions			  */
#include "H5Vprivate.h"         /* Vector functions */

/* Interface initialization */
#define INTERFACE_INIT  NULL
static int             interface_initialize_g = 0;

/* Local functions */
static herr_t H5S_select_iter_block (const H5S_sel_iter_t *iter, hssize_t *start, hssize_t *end);
static htri_t H5S_select_iter_has_next_block (const H5S_sel_iter_t *iter);
static herr_t H5S_select_iter_next_block(H5S_sel_iter_t *iter);

/* Declare external the free list for hssize_t arrays */
H5FL_ARR_EXTERN(hssize_t);

/* Declare a free list to manage sequences of size_t */
H5FL_SEQ_DEFINE_STATIC(size_t);

/* Declare a free list to manage sequences of hsize_t */
H5FL_SEQ_DEFINE_STATIC(hsize_t);

/* Declare a free list to manage blocks of single datatype element data */
H5FL_BLK_EXTERN(type_elem);


/*--------------------------------------------------------------------------
 NAME
    H5S_select_offset
 PURPOSE
    Set the selection offset for a datapace
 USAGE
    herr_t H5S_select_offset(space, offset)
        H5S_t *space;	        IN/OUT: Dataspace object to set selection offset
        const hssize_t *offset; IN: Offset to position the selection at
 RETURNS
    Non-negative on success/Negative on failure
 DESCRIPTION
    Sets the selection offset for the dataspace
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
    Only works for simple dataspaces currently
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
herr_t
H5S_select_offset(H5S_t *space, const hssize_t *offset)
{
    herr_t ret_value=SUCCEED;     /* return value */

    FUNC_ENTER_NOAPI(H5S_select_offset, FAIL);

    /* Check args */
    assert(space);
    assert(space->extent.u.simple.rank);
    assert(offset);

    /* Allocate space for new offset */
    if(space->select.offset==NULL) {
        if (NULL==(space->select.offset = H5FL_ARR_MALLOC(hssize_t,space->extent.u.simple.rank)))
            HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed");
    }

    /* Copy the offset over */
    HDmemcpy(space->select.offset,offset,sizeof(hssize_t)*space->extent.u.simple.rank);

done:
    FUNC_LEAVE_NOAPI(ret_value);
}   /* H5S_select_offset() */


/*--------------------------------------------------------------------------
 NAME
    H5S_select_copy
 PURPOSE
    Copy a selection from one dataspace to another
 USAGE
    herr_t H5S_select_copy(dst, src)
        H5S_t *dst;  OUT: Pointer to the destination dataspace
        H5S_t *src;  IN: Pointer to the source dataspace
 RETURNS
    Non-negative on success/Negative on failure
 DESCRIPTION
    Copies all the selection information (include offset) from the source
    dataspace to the destination dataspace.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
herr_t
H5S_select_copy (H5S_t *dst, const H5S_t *src)
{
    herr_t ret_value=SUCCEED;     /* return value */

    FUNC_ENTER_NOAPI(H5S_select_copy, FAIL);

    /* Check args */
    assert(dst);
    assert(src);

    /* Copy regular fields */
    HDmemcpy(&dst->select,&src->select,sizeof(H5S_select_t));

/* Need to copy order information still */

    /* Copy offset information */
    if(src->extent.u.simple.rank>0) {
        if (NULL==(dst->select.offset = H5FL_ARR_MALLOC(hssize_t,src->extent.u.simple.rank)))
            HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed");
        if(src->select.offset==NULL)
            HDmemset(dst->select.offset,0,(src->extent.u.simple.rank*sizeof(hssize_t)));
        else
            HDmemcpy(dst->select.offset,src->select.offset,(src->extent.u.simple.rank*sizeof(hssize_t)));
    } /* end if */
    else
        dst->select.offset=NULL;

    /* Perform correct type of copy based on the type of selection */
    switch (src->extent.type) {
        case H5S_NULL:
        case H5S_SCALAR:
            /*nothing needed */
            break;

        case H5S_SIMPLE:
            /* Deep copy extra stuff */
            switch(src->select.type) {
                case H5S_SEL_NONE:
                case H5S_SEL_ALL:
                    /*nothing needed */
                    break;

                case H5S_SEL_POINTS:
                    ret_value=H5S_point_copy(dst,src);
                    break;

                case H5S_SEL_HYPERSLABS:
                    ret_value=H5S_hyper_copy(dst,src);
                    break;

                default:
                    assert("unknown selection type" && 0);
                    break;
            } /* end switch */
            break;

        case H5S_COMPLEX:
            /*void */
            break;

        default:
            assert("unknown dataspace type" && 0);
            break;
    } /* end switch */

done:
    FUNC_LEAVE_NOAPI(ret_value);
}   /* H5S_select_copy() */


/*-------------------------------------------------------------------------
 * Function:	H5S_select_release
 *
 * Purpose:	Releases all memory associated with a dataspace selection.
 *
 * Return:	Non-negative on success/Negative on failure
 *
 * Programmer:	Quincey Koziol
 *		Friday, May 30, 2003
 *
 * Modifications:
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5S_select_release(H5S_t *ds)
{
    herr_t ret_value=SUCCEED;   /* Return value */

    FUNC_ENTER_NOAPI(H5S_select_release, FAIL);

    assert(ds);

    /* If there was a previous offset for the selection, release it */
    if(ds->select.offset!=NULL)
        ds->select.offset=H5FL_ARR_FREE(hssize_t,ds->select.offset);

    /* Call the selection type's release function */
    (*ds->select.release)(ds);

done:
    FUNC_LEAVE_NOAPI(ret_value);
}   /* end H5S_select_release() */


/*--------------------------------------------------------------------------
 NAME
    H5Sget_select_npoints
 PURPOSE
    Get the number of elements in current selection
 USAGE
    hssize_t H5Sget_select_npoints(dsid)
        hid_t dsid;             IN: Dataspace ID of selection to query
 RETURNS
    Non-negative on success/Negative on failure
 DESCRIPTION
    Returns the number of elements in current selection for dataspace.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
hssize_t
H5Sget_select_npoints(hid_t spaceid)
{
    H5S_t	*space = NULL;      /* Dataspace to modify selection of */
    hssize_t ret_value;         /* return value */

    FUNC_ENTER_API(H5Sget_select_npoints, FAIL);
    H5TRACE1("Hs","i",spaceid);

    /* Check args */
    if (NULL == (space=H5I_object_verify(spaceid, H5I_DATASPACE)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace");

    ret_value = H5S_get_select_npoints(space);

done:
    FUNC_LEAVE_API(ret_value);
}   /* H5Sget_select_npoints() */


/*--------------------------------------------------------------------------
 NAME
    H5S_get_select_npoints
 PURPOSE
    Get the number of elements in current selection
 USAGE
    hssize_t H5Sget_select_npoints(space)
        H5S_t *space;             IN: Dataspace of selection to query
 RETURNS
    The number of elements in selection on success, 0 on failure
 DESCRIPTION
    Returns the number of elements in current selection for dataspace.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
hssize_t
H5S_get_select_npoints(const H5S_t *space)
{
    hssize_t ret_value;         /* return value */

    FUNC_ENTER_NOAPI(H5S_get_select_npoints, 0);

    /* Check args */
    assert(space);

    ret_value = (*space->select.get_npoints)(space);

done:
    FUNC_LEAVE_NOAPI(ret_value);
}   /* H5S_get_select_npoints() */


/*--------------------------------------------------------------------------
 NAME
    H5Sselect_valid
 PURPOSE
    Check whether the selection fits within the extent, with the current
    offset defined.
 USAGE
    htri_t H5Sselect_void(dsid)
        hid_t dsid;             IN: Dataspace ID to query
 RETURNS
    TRUE if the selection fits within the extent, FALSE if it does not and
        Negative on an error.
 DESCRIPTION
    Determines if the current selection at the current offet fits within the
    extent for the dataspace.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
htri_t
H5Sselect_valid(hid_t spaceid)
{
    H5S_t	*space = NULL;      /* Dataspace to modify selection of */
    htri_t ret_value;     /* return value */

    FUNC_ENTER_API(H5Sselect_valid, 0);
    H5TRACE1("b","i",spaceid);

    /* Check args */
    if (NULL == (space=H5I_object_verify(spaceid, H5I_DATASPACE)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, 0, "not a dataspace");

    ret_value = H5S_select_valid(space);

done:
    FUNC_LEAVE_API(ret_value);
}   /* H5Sselect_valid() */


/*--------------------------------------------------------------------------
 NAME
    H5S_select_valid
 PURPOSE
    Check whether the selection fits within the extent, with the current
    offset defined.
 USAGE
    htri_t H5S_select_void(space)
        H5S_t *space;           IN: Dataspace to query
 RETURNS
    TRUE if the selection fits within the extent, FALSE if it does not and
        Negative on an error.
 DESCRIPTION
    Determines if the current selection at the current offet fits within the
    extent for the dataspace.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
htri_t
H5S_select_valid(const H5S_t *space)
{
    htri_t ret_value;     /* return value */

    FUNC_ENTER_NOAPI(H5S_select_valid, 0);

    assert(space);

    ret_value = (*space->select.is_valid)(space);

done:
    FUNC_LEAVE_NOAPI(ret_value);
}   /* H5S_select_valid() */


/*--------------------------------------------------------------------------
 NAME
    H5S_select_deserialize
 PURPOSE
    Deserialize the current selection from a user-provided buffer into a real
        selection in the dataspace.
 USAGE
    herr_t H5S_select_deserialize(space, buf)
        H5S_t *space;           IN/OUT: Dataspace pointer to place selection into
        uint8 *buf;             IN: Buffer to retrieve serialized selection from
 RETURNS
    Non-negative on success/Negative on failure
 DESCRIPTION
    Deserializes the current selection into a buffer.  (Primarily for retrieving
    from disk).  This routine just hands off to the appropriate routine for each
    type of selection.  The format of the serialized information is shown in
    the H5S_select_serialize() header.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
herr_t
H5S_select_deserialize (H5S_t *space, const uint8_t *buf)
{
    const uint8_t *tbuf;    /* Temporary pointer to the selection type */
    uint32_t sel_type;       /* Pointer to the selection type */
    herr_t ret_value=FAIL;  /* return value */

    FUNC_ENTER_NOAPI(H5S_select_deserialize, FAIL);

    assert(space);

    tbuf=buf;
    UINT32DECODE(tbuf, sel_type);
    switch(sel_type) {
        case H5S_SEL_POINTS:         /* Sequence of points selected */
            ret_value=H5S_point_deserialize(space,buf);
            break;

        case H5S_SEL_HYPERSLABS:     /* Hyperslab selection defined */
            ret_value=H5S_hyper_deserialize(space,buf);
            break;

        case H5S_SEL_ALL:            /* Entire extent selected */
            ret_value=H5S_all_deserialize(space,buf);
            break;

        case H5S_SEL_NONE:           /* Nothing selected */
            ret_value=H5S_none_deserialize(space,buf);
            break;

        default:
            break;
    }

done:
    FUNC_LEAVE_NOAPI(ret_value);
}   /* H5S_select_deserialize() */


/*--------------------------------------------------------------------------
 NAME
    H5Sget_select_bounds
 PURPOSE
    Gets the bounding box containing the selection.
 USAGE
    herr_t H5S_get_select_bounds(space, start, end)
        hid_t dsid;             IN: Dataspace ID of selection to query
        hssize_t *start;         OUT: Starting coordinate of bounding box
        hssize_t *end;           OUT: Opposite coordinate of bounding box
 RETURNS
    Non-negative on success, negative on failure
 DESCRIPTION
    Retrieves the bounding box containing the current selection and places
    it into the user's buffers.  The start and end buffers must be large
    enough to hold the dataspace rank number of coordinates.  The bounding box
    exactly contains the selection, ie. if a 2-D element selection is currently
    defined with the following points: (4,5), (6,8) (10,7), the bounding box
    with be (4, 5), (10, 8).  Calling this function on a "none" selection
    returns fail.
        The bounding box calculations _does_ include the current offset of the
    selection within the dataspace extent.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
herr_t
H5Sget_select_bounds(hid_t spaceid, hssize_t *start, hssize_t *end)
{
    H5S_t	*space = NULL;      /* Dataspace to modify selection of */
    herr_t ret_value;        /* return value */

    FUNC_ENTER_API(H5Sget_select_bounds, FAIL);
    H5TRACE3("e","i*Hs*Hs",spaceid,start,end);

    /* Check args */
    if(start==NULL || end==NULL)
        HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid pointer");
    if (NULL == (space=H5I_object_verify(spaceid, H5I_DATASPACE)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace");

    ret_value = H5S_get_select_bounds(space,start,end);

done:
    FUNC_LEAVE_API(ret_value);
}   /* H5Sget_select_bounds() */


/*--------------------------------------------------------------------------
 NAME
    H5S_get_select_bounds
 PURPOSE
    Gets the bounding box containing the selection.
 USAGE
    herr_t H5S_get_select_bounds(space, start, end)
        H5S_t *space;           IN: Dataspace ID of selection to query
        hssize_t *start;         OUT: Starting coordinate of bounding box
        hssize_t *end;           OUT: Opposite coordinate of bounding box
 RETURNS
    Non-negative on success, negative on failure
 DESCRIPTION
    Retrieves the bounding box containing the current selection and places
    it into the user's buffers.  The start and end buffers must be large
    enough to hold the dataspace rank number of coordinates.  The bounding box
    exactly contains the selection, ie. if a 2-D element selection is currently
    defined with the following points: (4,5), (6,8) (10,7), the bounding box
    with be (4, 5), (10, 8).  Calling this function on a "none" selection
    returns fail.
        The bounding box calculations _does_ include the current offset of the
    selection within the dataspace extent.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
herr_t
H5S_get_select_bounds(const H5S_t *space, hssize_t *start, hssize_t *end)
{
    herr_t ret_value;        /* return value */

    FUNC_ENTER_NOAPI(H5S_get_select_bounds, FAIL);

    /* Check args */
    assert(space);
    assert(start);
    assert(end);

    ret_value = (*space->select.bounds)(space,start,end);

done:
    FUNC_LEAVE_NOAPI(ret_value);
}   /* H5S_get_select_bounds() */


/*--------------------------------------------------------------------------
 NAME
    H5S_select_iter_init
 PURPOSE
    Initializes iteration information for a selection.
 USAGE
    herr_t H5S_select_iter_init(sel_iter, space, elmt_size)
        H5S_sel_iter_t *sel_iter; OUT: Selection iterator to initialize.
        H5S_t *space;           IN: Dataspace object containing selection to
                                    iterate over
        size_t elmt_size;       IN: Size of elements in the selection
 RETURNS
     Non-negative on success, negative on failure.
 DESCRIPTION
    Initialize the selection iterator object to point to the first element
    in the dataspace's selection.
--------------------------------------------------------------------------*/
herr_t
H5S_select_iter_init(H5S_sel_iter_t *sel_iter, const H5S_t *space, size_t elmt_size)
{
    herr_t ret_value=SUCCEED;   /* Return value */

    FUNC_ENTER_NOAPI(H5S_select_iter_init, FAIL);

    /* Check args */
    assert(sel_iter);
    assert(space);

    /* Initialize common information */

    /* Save the dataspace's rank */
    sel_iter->rank=space->extent.u.simple.rank;

    if(sel_iter->rank>0) {
        /* Point to the dataspace dimensions */
        sel_iter->dims=space->extent.u.simple.size;
    } /* end if */
    else
        sel_iter->dims = NULL;

    /* Save the element size */
    sel_iter->elmt_size=elmt_size;

    /* Call initialization routine for selection type */
    ret_value= (*space->select.iter_init)(sel_iter, space);

done:
    FUNC_LEAVE_NOAPI(ret_value);
}   /* H5S_select_iter_init() */


/*--------------------------------------------------------------------------
 NAME
    H5S_select_iter_coords
 PURPOSE
    Get the coordinates of the current iterator position
 USAGE
    herr_t H5S_select_iter_coords(sel_iter,coords)
        H5S_sel_iter_t *sel_iter; IN: Selection iterator to query
        hssize_t *coords;         OUT: Array to place iterator coordinates in
 RETURNS
    Non-negative on success, negative on failure.
 DESCRIPTION
    The current location of the iterator within the selection is placed in
    the COORDS array.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
herr_t
H5S_select_iter_coords (const H5S_sel_iter_t *sel_iter, hssize_t *coords)
{
    herr_t ret_value;         /* return value */

    FUNC_ENTER_NOAPI(H5S_select_iter_coords, FAIL);

    /* Check args */
    assert(sel_iter);
    assert(coords);

    /* Call iter_coords routine for selection type */
    ret_value = (*sel_iter->iter_coords)(sel_iter,coords);

done:
    FUNC_LEAVE_NOAPI(ret_value);
}   /* H5S_select_iter_coords() */


/*--------------------------------------------------------------------------
 NAME
    H5S_select_iter_block
 PURPOSE
    Get the block of the current iterator position
 USAGE
    herr_t H5S_select_iter_block(sel_iter,start,end)
        const H5S_sel_iter_t *sel_iter; IN: Selection iterator to query
        hssize_t *start;    OUT: Array to place iterator start block coordinates
        hssize_t *end;      OUT: Array to place iterator end block coordinates
 RETURNS
    Non-negative on success, negative on failure.
 DESCRIPTION
    The current location of the iterator within the selection is placed in
    the COORDS array.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
static herr_t
H5S_select_iter_block (const H5S_sel_iter_t *iter, hssize_t *start, hssize_t *end)
{
    herr_t ret_value;         /* return value */

    FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5S_select_iter_block);

    /* Check args */
    assert(iter);
    assert(start);
    assert(end);

    /* Call iter_block routine for selection type */
    ret_value = (*iter->iter_block)(iter,start,end);

    FUNC_LEAVE_NOAPI(ret_value);
}   /* H5S_select_iter_block() */


/*--------------------------------------------------------------------------
 NAME
    H5S_select_iter_nelmts
 PURPOSE
    Get the number of elements left to iterate over in selection
 USAGE
    hssize_t H5S_select_iter_nelmts(sel_iter)
        H5S_sel_iter_t *sel_iter; IN: Selection iterator to query
 RETURNS
    The number of elements in selection on success, 0 on failure
 DESCRIPTION
    Returns the number of elements in current selection for dataspace.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
hsize_t
H5S_select_iter_nelmts (const H5S_sel_iter_t *sel_iter)
{
    hsize_t ret_value;         /* return value */

    FUNC_ENTER_NOAPI(H5S_select_iter_nelmts, 0);

    /* Check args */
    assert(sel_iter);

    /* Call iter_nelmts routine for selection type */
    ret_value = (*sel_iter->iter_nelmts)(sel_iter);

done:
    FUNC_LEAVE_NOAPI(ret_value);
}   /* H5S_select_iter_nelmts() */


/*--------------------------------------------------------------------------
 NAME
    H5S_select_iter_has_next_block
 PURPOSE
    Check if there is another block available in the selection iterator
 USAGE
    htri_t H5S_select_iter_has_next_block(sel_iter)
        const H5S_sel_iter_t *sel_iter; IN: Selection iterator to query
 RETURNS
    Non-negative on success, negative on failure.
 DESCRIPTION
    Check if there is another block available to advance to in the selection
    iterator.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
static htri_t
H5S_select_iter_has_next_block (const H5S_sel_iter_t *iter)
{
    herr_t ret_value;         /* return value */

    FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5S_select_iter_has_next_block);

    /* Check args */
    assert(iter);

    /* Call iter_has_next_block routine for selection type */
    ret_value = (*iter->iter_has_next_block)(iter);

    FUNC_LEAVE_NOAPI(ret_value);
}   /* H5S_select_iter_has_next_block() */


/*--------------------------------------------------------------------------
 NAME
    H5S_select_iter_next
 PURPOSE
    Advance selection iterator to next element
 USAGE
    herr_t H5S_select_iter_next(iter, nelem)
        H5S_sel_iter_t *iter;   IN/OUT: Selection iterator to change
        size_t nelem;           IN: Number of elements to advance by
 RETURNS
    Non-negative on success, negative on failure.
 DESCRIPTION
    Move the current element for the selection iterator to the NELEM'th next
    element in the selection.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
herr_t
H5S_select_iter_next(H5S_sel_iter_t *iter, size_t nelem)
{
    herr_t ret_value;         /* return value */

    FUNC_ENTER_NOAPI(H5S_select_iter_next, FAIL);

    /* Check args */
    assert(iter);
    assert(nelem>0);

    /* Call iter_next routine for selection type */
    ret_value = (*iter->iter_next)(iter,nelem);

    /* Decrement the number of elements left in selection */
    iter->elmt_left-=nelem;

done:
    FUNC_LEAVE_NOAPI(ret_value);
}   /* H5S_select_iter_next() */


/*--------------------------------------------------------------------------
 NAME
    H5S_select_iter_next_block
 PURPOSE
    Advance selection iterator to next block
 USAGE
    herr_t H5S_select_iter_next(iter)
        H5S_sel_iter_t *iter;   IN/OUT: Selection iterator to change
 RETURNS
    Non-negative on success, negative on failure.
 DESCRIPTION
    Move the current element for the selection iterator to the next
    block in the selection.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
    Doesn't maintain the 'elmt_left' field of the selection iterator.
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
static herr_t
H5S_select_iter_next_block(H5S_sel_iter_t *iter)
{
    herr_t ret_value;         /* return value */

    FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5S_select_iter_next_block);

    /* Check args */
    assert(iter);

    /* Call iter_next_block routine for selection type */
    ret_value = (*iter->iter_next_block)(iter);

    FUNC_LEAVE_NOAPI(ret_value);
}   /* H5S_select_iter_next_block() */


/*--------------------------------------------------------------------------
 NAME
    H5S_select_iter_release
 PURPOSE
    Release a selection iterator's resources.
 USAGE
    hssize_t H5S_select_iter_release(sel_iter)
        H5S_sel_iter_t *sel_iter; IN: Selection iterator to query
 RETURNS
    The number of elements in selection on success, 0 on failure
 DESCRIPTION
    Returns the number of elements in current selection for dataspace.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
herr_t
H5S_select_iter_release(H5S_sel_iter_t *sel_iter)
{
    herr_t ret_value;         /* return value */

    FUNC_ENTER_NOAPI(H5S_select_iter_release, FAIL);

    /* Check args */
    assert(sel_iter);

    /* Call selection type-specific release routine */
    ret_value = (*sel_iter->iter_release)(sel_iter);

done:
    FUNC_LEAVE_NOAPI(ret_value);
}   /* H5S_select_iter_release() */


/*--------------------------------------------------------------------------
 NAME
    H5S_select_iterate
 PURPOSE
    Iterate over the selected elements in a memory buffer.
 USAGE
    herr_t H5S_select_iterate(buf, type_id, space, operator, operator_data)
        void *buf;      IN/OUT: Buffer containing elements to iterate over
        hid_t type_id;  IN: Datatype ID of BUF array.
        H5S_t *space;   IN: Dataspace object containing selection to iterate over
        H5D_operator_t op; IN: Function pointer to the routine to be
                                called for each element in BUF iterated over.
        void *operator_data;    IN/OUT: Pointer to any user-defined data
                                associated with the operation.
 RETURNS
    Returns the return value of the last operator if it was non-zero, or zero
    if all elements were processed. Otherwise returns a negative value.
 DESCRIPTION
    Iterates over the selected elements in a memory buffer, calling the user's
    callback function for each element.  The selection in the dataspace is
    modified so that any elements already iterated over are removed from the
    selection if the iteration is interrupted (by the H5D_operator_t function
    returning non-zero) in the "middle" of the iteration and may be re-started
    by the user where it left off.

    NOTE: Until "subtracting" elements from a selection is implemented,
        the selection is not modified.
--------------------------------------------------------------------------*/
herr_t
H5S_select_iterate(void *buf, hid_t type_id, const H5S_t *space, H5D_operator_t op,
        void *operator_data)
{
    H5T_t *dt;                  /* Datatype structure */
    H5S_sel_iter_t iter;        /* Selection iteration info */
    hbool_t iter_init=0;        /* Selection iteration info has been initialized */
    uint8_t *loc;               /* Current element location in buffer */
    hssize_t coords[H5O_LAYOUT_NDIMS];  /* Coordinates of element in dataspace */
    hssize_t nelmts;            /* Number of elements in selection */
    hsize_t space_size[H5O_LAYOUT_NDIMS]; /* Dataspace size */
    hsize_t off[H5D_XFER_HYPER_VECTOR_SIZE_DEF];          /* Array to store sequence offsets */
    hsize_t curr_off;           /* Current offset within sequence */
    hsize_t tmp_off;            /* Temporary offset within sequence */
    size_t len[H5D_XFER_HYPER_VECTOR_SIZE_DEF];           /* Array to store sequence lengths */
    size_t curr_len;            /* Length of bytes left to process in sequence */
    size_t nseq;                /* Number of sequences generated */
    size_t curr_seq;            /* Current sequnce being worked on */
    size_t nelem;               /* Number of elements used in sequences */
    size_t max_elem;            /* Maximum number of elements allowed in sequences */
    size_t elmt_size;           /* Datatype size */
    int ndims;                  /* Number of dimensions in dataspace */
    int	i;			/* Local Index variable */
    herr_t user_ret=0;          /* User's return value */
    herr_t ret_value=SUCCEED;   /* Return value */

    FUNC_ENTER_NOAPI(H5S_select_iterate, FAIL);

    /* Check args */
    assert(buf);
    assert(H5I_DATATYPE == H5I_get_type(type_id));
    assert(space);
    assert(op);

    /* Get the datatype size */
    if (NULL==(dt=H5I_object_verify(type_id,H5I_DATATYPE)))
        HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an valid base datatype");
    if((elmt_size=H5T_get_size(dt))==0)
        HGOTO_ERROR(H5E_DATATYPE, H5E_BADSIZE, FAIL, "datatype size invalid");

    /* Initialize iterator */
    if (H5S_select_iter_init(&iter, space, elmt_size)<0)
        HGOTO_ERROR (H5E_DATASPACE, H5E_CANTINIT, FAIL, "unable to initialize selection iterator");
    iter_init=1;	/* Selection iteration info has been initialized */

    /* Get the number of elements in selection */
    if((nelmts = H5S_get_select_npoints(space))<0)
        HGOTO_ERROR (H5E_DATASPACE, H5E_CANTCOUNT, FAIL, "can't get number of elements selected");

    /* Get the rank of the dataspace */
    ndims=space->extent.u.simple.rank;

    if (ndims > 0){
	/* Copy the size of the space */
	assert(space->extent.u.simple.size);
	HDmemcpy(space_size, space->extent.u.simple.size, ndims*sizeof(hsize_t));
    }
    space_size[ndims]=elmt_size;

    /* Compute the maximum number of bytes required */
    H5_ASSIGN_OVERFLOW(max_elem,nelmts,hssize_t,size_t);

    /* Loop, while elements left in selection */
    while(max_elem>0 && user_ret==0) {
        /* Get the sequences of bytes */
        if((*space->select.get_seq_list)(space,0,&iter,H5D_XFER_HYPER_VECTOR_SIZE_DEF,max_elem,&nseq,&nelem,off,len)<0)
            HGOTO_ERROR (H5E_INTERNAL, H5E_UNSUPPORTED, FAIL, "sequence length generation failed");

        /* Loop, while sequences left to process */
        for(curr_seq=0; curr_seq<nseq && user_ret==0; curr_seq++) {
            /* Get the current offset */
            curr_off=off[curr_seq];

            /* Get the number of bytes in sequence */
            curr_len=len[curr_seq];

            /* Loop, while bytes left in sequence */
            while(curr_len>0 && user_ret==0) {
                /* Compute the coordinate from the offset */
                for(i=ndims, tmp_off=curr_off; i>=0; i--) {
                    coords[i]=tmp_off%space_size[i];
                    tmp_off/=space_size[i];
                } /* end for */

                /* Get the location within the user's buffer */
                loc=(unsigned char *)buf+curr_off;

                /* Call user's callback routine */
                user_ret=(*op)(loc,type_id,(hsize_t)ndims,coords,operator_data);

                /* Increment offset in dataspace */
                curr_off+=elmt_size;

                /* Decrement number of bytes left in sequence */
                curr_len-=elmt_size;
            } /* end while */
        } /* end for */

        /* Decrement number of elements left to process */
        max_elem-=nelem;
    } /* end while */

    /* Set return value */
    ret_value=user_ret;

done:
    /* Release selection iterator */
    if(iter_init) {
        if (H5S_select_iter_release(&iter)<0)
            HDONE_ERROR (H5E_DATASPACE, H5E_CANTRELEASE, FAIL, "unable to release selection iterator");
    } /* end if */

    FUNC_LEAVE_NOAPI(ret_value);
}   /* end H5S_select_iterate() */


/*--------------------------------------------------------------------------
 NAME
    H5Sget_select_type
 PURPOSE
    Retrieve the type of selection in a dataspace
 USAGE
    H5S_sel_type H5Sget_select_type(space_id)
        hid_t space_id;	        IN: Dataspace object to query
 RETURNS
    Non-negative on success/Negative on failure.  Return value is from the
    set of values in the H5S_sel_type enumerated type.
 DESCRIPTION
	This function retrieves the type of selection currently defined for
    a dataspace.
--------------------------------------------------------------------------*/
H5S_sel_type
H5Sget_select_type(hid_t space_id)
{
    H5S_t		   *space = NULL;	/* dataspace to modify */
    H5S_sel_type        ret_value;       /* Return value */

    FUNC_ENTER_API(H5Sget_select_type, H5S_SEL_ERROR);
    H5TRACE1("St","i",space_id);

    /* Check args */
    if (NULL == (space = H5I_object_verify(space_id, H5I_DATASPACE)))
        HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, H5S_SEL_ERROR, "not a dataspace");

    /* Set return value */
    ret_value=H5S_get_select_type(space);

done:
    FUNC_LEAVE_API(ret_value);
}   /* end H5Sget_select_type() */


/*--------------------------------------------------------------------------
 NAME
    H5S_get_select_type
 PURPOSE
    Retrieve the type of selection in a dataspace
 USAGE
    H5S_sel_type H5Sget_select_type(space)
        const H5S_t *space;	        IN: Dataspace object to query
 RETURNS
    Non-negative on success/Negative on failure.  Return value is from the
    set of values in the H5S_sel_type enumerated type.
 DESCRIPTION
	This function retrieves the type of selection currently defined for
    a dataspace.
--------------------------------------------------------------------------*/
H5S_sel_type
H5S_get_select_type(const H5S_t *space)
{
    H5S_sel_type        ret_value;       /* Return value */

    FUNC_ENTER_NOAPI(H5S_get_select_type, H5S_SEL_ERROR);

    /* Check args */
    assert(space);

    /* Set return value */
    ret_value=space->select.type;

done:
    FUNC_LEAVE_NOAPI(ret_value);
}   /* end H5S_get_select_type() */


/*--------------------------------------------------------------------------
 NAME
    H5S_select_shape_same
 PURPOSE
    Check if two selections are the same shape
 USAGE
    htri_t H5S_select_shape_same(space1, space2)
        const H5S_t *space1;         IN: 1st Dataspace pointer to compare
        const H5S_t *space2;         IN: 2nd Dataspace pointer to compare
 RETURNS
    TRUE/FALSE/FAIL
 DESCRIPTION
    Checks to see if the current selection in the dataspaces are the same
    dimensionality and shape.
    This is primarily used for reading the entire selection in one swoop.
 GLOBAL VARIABLES
 COMMENTS, BUGS, ASSUMPTIONS
    Assumes that there is only a single "block" for hyperslab selections.
 EXAMPLES
 REVISION LOG
--------------------------------------------------------------------------*/
htri_t
H5S_select_shape_same(const H5S_t *space1, const H5S_t *space2)
{
    H5S_sel_iter_t iter1;                       /* Selection #1 iteration info */
    H5S_sel_iter_t iter2;                       /* Selection #2 iteration info */
    hbool_t iter1_init=0;                       /* Selection #1 iteration info has been initialized */
    hbool_t iter2_init=0;                       /* Selection #2 iteration info has been initialized */
    unsigned	u;                              /* Index variable */
    htri_t ret_value=TRUE;  /* return value */

    FUNC_ENTER_NOAPI(H5S_select_shape_same, FAIL);
#ifdef QAK
HDfprintf(stderr,"%s: Entering\n",FUNC);
#endif /* QAK */

    /* Check args */
    assert(space1);
    assert(space2);

    /* Check for different dimensionality */
    if (space1->extent.u.simple.rank!=space2->extent.u.simple.rank)
        HGOTO_DONE(FALSE);

    /* Check for different number of elements selected */
    if(H5S_get_select_npoints(space1)!=H5S_get_select_npoints(space2))
        HGOTO_DONE(FALSE);

    /* Check for "easy" cases before getting into generalized block iteration code */
    if(space1->select.type==H5S_SEL_ALL && space2->select.type==H5S_SEL_ALL) {
        hsize_t dims1[H5O_LAYOUT_NDIMS];             /* End point of selection block in dataspace #1 */
        hsize_t dims2[H5O_LAYOUT_NDIMS];             /* End point of selection block in dataspace #2 */

        if(H5S_get_simple_extent_dims(space1, dims1, NULL)<0)
            HGOTO_ERROR (H5E_DATASPACE, H5E_CANTGET, FAIL, "unable to get dimensionality");
        if(H5S_get_simple_extent_dims(space2, dims2, NULL)<0)
            HGOTO_ERROR (H5E_DATASPACE, H5E_CANTGET, FAIL, "unable to get dimensionality");

        /* Check that the sizes are the same */
        for (u=0; u<space1->extent.u.simple.rank; u++)
            if(dims1[u]!=dims2[u])
                HGOTO_DONE(FALSE);
    } /* end if */
    else if(space1->select.type==H5S_SEL_NONE || space2->select.type==H5S_SEL_NONE) {
        HGOTO_DONE(TRUE);
    } /* end if */
    else if((space1->select.type==H5S_SEL_HYPERSLABS && space1->select.sel_info.hslab.diminfo_valid)
            && (space2->select.type==H5S_SEL_HYPERSLABS && space2->select.sel_info.hslab.diminfo_valid)) {

        /* Check that the shapes are the same */
        for (u=0; u<space1->extent.u.simple.rank; u++) {
            if(space1->select.sel_info.hslab.opt_diminfo[u].stride!=space2->select.sel_info.hslab.opt_diminfo[u].stride)
                HGOTO_DONE(FALSE);
            if(space1->select.sel_info.hslab.opt_diminfo[u].count!=space2->select.sel_info.hslab.opt_diminfo[u].count)
                HGOTO_DONE(FALSE);
            if(space1->select.sel_info.hslab.opt_diminfo[u].block!=space2->select.sel_info.hslab.opt_diminfo[u].block)
                HGOTO_DONE(FALSE);
        } /* end for */
    } /* end if */
    /* Iterate through all the blocks in the selection */
    else {
        hssize_t start1[H5O_LAYOUT_NDIMS];      /* Start point of selection block in dataspace #1 */
        hssize_t start2[H5O_LAYOUT_NDIMS];      /* Start point of selection block in dataspace #2 */
        hssize_t end1[H5O_LAYOUT_NDIMS];        /* End point of selection block in dataspace #1 */
        hssize_t end2[H5O_LAYOUT_NDIMS];        /* End point of selection block in dataspace #2 */
        hssize_t off1[H5O_LAYOUT_NDIMS];        /* Offset of selection #1 blocks */
        hssize_t off2[H5O_LAYOUT_NDIMS];        /* Offset of selection #2 blocks */
        htri_t status1,status2;         /* Status from next block checks */
        unsigned first_block=1;         /* Flag to indicate the first block */
#ifdef QAK
HDfprintf(stderr,"%s: Check 10.0\n",FUNC);
HDfprintf(stderr,"%s: space1 selection type=%d\n",FUNC,(int)space1->select.type);
if(space1->select.sel_info.hslab.span_lst) {
    HDfprintf(stderr,"%s: Dumping space1 span list\n",FUNC);
    H5S_hyper_print_spans(stderr,space1->select.sel_info.hslab.span_lst);
} /* end if */
else {
    HDfprintf(stderr,"%s: Dumping space1 diminfo\n",FUNC);
    H5S_hyper_print_diminfo(stderr,space1);
} /* end else */
HDfprintf(stderr,"%s: space2 selection type=%d\n",FUNC,(int)space2->select.type);
if(space2->select.sel_info.hslab.span_lst) {
    HDfprintf(stderr,"%s: Dumping space2 span list\n",FUNC);
    H5S_hyper_print_spans(stderr,space2->select.sel_info.hslab.span_lst);
} /* end if */
else {
    HDfprintf(stderr,"%s: Dumping space2 diminfo\n",FUNC);
    H5S_hyper_print_diminfo(stderr,space2);
} /* end else */
#endif /* QAK */

        /* Initialize iterator for each dataspace selection
         * Use '0' for element size instead of actual element size to indicate
         * that the selection iterator shouldn't be "flattened", since we
         * aren't actually going to be doing I/O with the iterators.
         */
        if (H5S_select_iter_init(&iter1, space1, 0)<0)
            HGOTO_ERROR (H5E_DATASPACE, H5E_CANTINIT, FAIL, "unable to initialize selection iterator");
        iter1_init=1;
        if (H5S_select_iter_init(&iter2, space2, 0)<0)
            HGOTO_ERROR (H5E_DATASPACE, H5E_CANTINIT, FAIL, "unable to initialize selection iterator");
        iter2_init=1;

        /* Iterate over all the blocks in each selection */
        while(1) {
            /* Get the current block for each selection iterator */
            if(H5S_select_iter_block(&iter1,start1,end1)<0)
                HGOTO_ERROR (H5E_DATASPACE, H5E_CANTGET, FAIL, "unable to get iterator block");
#ifdef QAK
{
    HDfprintf(stderr,"%s: iter1 start={",FUNC);
    for(u=0; u<space1->extent.u.simple.rank; u++)
        HDfprintf(stderr,"%Hd%s",start1[u],(u<(space1->extent.u.simple.rank-1) ? ", " : "}\n"));
    HDfprintf(stderr,"%s: iter1 end={",FUNC);
    for(u=0; u<space1->extent.u.simple.rank; u++)
        HDfprintf(stderr,"%Hd%s",end1[u],(u<(space1->extent.u.simple.rank-1) ? ", " : "}\n"));
}
#endif /* QAK */
            if(H5S_select_iter_block(&iter2,start2,end2)<0)
                HGOTO_ERROR (H5E_DATASPACE, H5E_CANTGET, FAIL, "unable to get iterator block");
#ifdef QAK
{
    HDfprintf(stderr,"%s: iter2 start={",FUNC);
    for(u=0; u<space1->extent.u.simple.rank; u++)
        HDfprintf(stderr,"%Hd%s",start2[u],(u<(space1->extent.u.simple.rank-1) ? ", " : "}\n"));
    HDfprintf(stderr,"%s: iter2 end={",FUNC);