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diff --git a/src/H5RS.c b/src/H5RS.c
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+/****************************************************************************
+ * NCSA HDF *
+ * Software Development Group *
+ * National Center for Supercomputing Applications *
+ * University of Illinois at Urbana-Champaign *
+ * 605 E. Springfield, Champaign IL 61820 *
+ * *
+ * For conditions of distribution and use, see the accompanying *
+ * hdf/COPYING file. *
+ * *
+ ****************************************************************************/
+
+/*
+ * Reference counted string algorithms.
+ *
+ * These are used for various internal strings which get copied multiple times.
+ *
+ */
+
+#include "H5Eprivate.h" /* Error handling */
+#include "H5FLprivate.h" /* Free lists */
+#include "H5RSprivate.h" /* Reference-counted strings */
+
+#define PABLO_MASK H5RS_mask
+
+/* Interface initialization */
+static int interface_initialize_g = 0;
+#define INTERFACE_INIT NULL
+
+/* Declare a free list to manage the H5RS_str_t struct */
+H5FL_DEFINE_STATIC(H5RS_str_t);
+
+/* Declare the PQ free list for the wrapped strings */
+H5FL_BLK_DEFINE(str_buf);
+
+
+/*--------------------------------------------------------------------------
+ NAME
+ H5RS_xstrdup
+ PURPOSE
+ Duplicate the string being reference counted
+ USAGE
+ char *H5RS_xstrdup(s)
+ const char *s; IN: String to duplicate
+
+ RETURNS
+ Returns a pointer to a new string on success, NULL on failure.
+ DESCRIPTION
+ Duplicate a string buffer being reference counted. Use this instead of
+ [H5MM_][x]strdup, in order to use the free-list memory routines.
+ GLOBAL VARIABLES
+ COMMENTS, BUGS, ASSUMPTIONS
+ EXAMPLES
+ REVISION LOG
+--------------------------------------------------------------------------*/
+static char *
+H5RS_xstrdup(const char *s)
+{
+ char *ret_value; /* Return value */
+
+ FUNC_ENTER_NOINIT(H5RS_xstrdup);
+
+ if (s) {
+ ret_value = H5FL_BLK_MALLOC(str_buf,HDstrlen(s) + 1);
+ assert (ret_value);
+ HDstrcpy(ret_value, s);
+ } /* end if */
+ else
+ ret_value=NULL;
+
+ FUNC_LEAVE(ret_value);
+} /* end H5RS_xstrdup() */
+
+
+/*--------------------------------------------------------------------------
+ NAME
+ H5RS_create
+ PURPOSE
+ Create a reference counted string
+ USAGE
+ H5RS_str_t *H5RS_create(s)
+ const char *s; IN: String to initialize ref-counted string with
+
+ RETURNS
+ Returns a pointer to a new ref-counted string on success, NULL on failure.
+ DESCRIPTION
+ Create a reference counted string. The string passed in is copied into an
+ internal buffer.
+ GLOBAL VARIABLES
+ COMMENTS, BUGS, ASSUMPTIONS
+ EXAMPLES
+ REVISION LOG
+--------------------------------------------------------------------------*/
+H5RS_str_t *
+H5RS_create(const char *s)
+{
+ H5RS_str_t *ret_value=NULL; /* Return value */
+
+ FUNC_ENTER_NOAPI(H5RS_create,NULL);
+
+ /* Allocate ref-counted string structure */
+ if((ret_value=H5FL_MALLOC(H5RS_str_t))==NULL)
+ HGOTO_ERROR(H5E_RS,H5E_NOSPACE,NULL,"memory allocation failed");
+
+ /* Set the internal fields */
+ ret_value->s=H5RS_xstrdup(s);
+ ret_value->wrapped=0;
+ ret_value->n=1;
+
+done:
+ FUNC_LEAVE(ret_value);
+} /* end H5RS_create() */
+
+
+/*--------------------------------------------------------------------------
+ NAME
+ H5RS_wrap
+ PURPOSE
+ "Wrap" a reference counted string around an existing string
+ USAGE
+ H5RS_str_t *H5RS_wrap(s)
+ const char *s; IN: String to wrap ref-counted string around
+
+ RETURNS
+ Returns a pointer to a new ref-counted string on success, NULL on failure.
+ DESCRIPTION
+ Wrap a reference counted string around an existing string, which is not
+ duplicated, unless its reference count gets incremented.
+ GLOBAL VARIABLES
+ COMMENTS, BUGS, ASSUMPTIONS
+ EXAMPLES
+ REVISION LOG
+--------------------------------------------------------------------------*/
+H5RS_str_t *
+H5RS_wrap(char *s)
+{
+ H5RS_str_t *ret_value=NULL; /* Return value */
+
+ FUNC_ENTER_NOAPI(H5RS_wrap,NULL);
+
+ /* Allocate ref-counted string structure */
+ if((ret_value=H5FL_MALLOC(H5RS_str_t))==NULL)
+ HGOTO_ERROR(H5E_RS,H5E_NOSPACE,NULL,"memory allocation failed");
+
+ /* Set the internal fields */
+ ret_value->s=s;
+ ret_value->wrapped=1;
+ ret_value->n=1;
+
+done:
+ FUNC_LEAVE(ret_value);
+} /* end H5RS_wrap() */
+
+
+/*--------------------------------------------------------------------------
+ NAME
+ H5RS_own
+ PURPOSE
+ Transfer ownership of a regular string to a reference counted string
+ USAGE
+ H5RS_str_t *H5RS_own(s)
+ const char *s; IN: String to transfer ownership of
+
+ RETURNS
+ Returns a pointer to a new ref-counted string on success, NULL on failure.
+ DESCRIPTION
+ Transfer ownership of a dynamically allocated string to a reference counted
+ string. The routine which passed in the string should not attempt to free
+ it, the reference counting string routines will do that when the reference
+ count drops to zero.
+ GLOBAL VARIABLES
+ COMMENTS, BUGS, ASSUMPTIONS
+ EXAMPLES
+ REVISION LOG
+--------------------------------------------------------------------------*/
+H5RS_str_t *
+H5RS_own(char *s)
+{
+ H5RS_str_t *ret_value=NULL; /* Return value */
+
+ FUNC_ENTER_NOAPI(H5RS_own,NULL);
+
+ /* Allocate ref-counted string structure */
+ if((ret_value=H5FL_MALLOC(H5RS_str_t))==NULL)
+ HGOTO_ERROR(H5E_RS,H5E_NOSPACE,NULL,"memory allocation failed");
+
+ /* Set the internal fields */
+ ret_value->s=s;
+ ret_value->wrapped=0;
+ ret_value->n=1;
+
+done:
+ FUNC_LEAVE(ret_value);
+} /* end H5RS_own() */
+
+
+/*--------------------------------------------------------------------------
+ NAME
+ H5RS_decr
+ PURPOSE
+ Decrement the reference count for a ref-counted string
+ USAGE
+ herr_t H5RS_decr(rs)
+ H5RS_str_t *rs; IN/OUT: Ref-counted string to decrement count of
+
+ RETURNS
+ Non-negative on success/Negative on failure
+ DESCRIPTION
+ Decrement the reference count for a reference counted string. If the
+ reference count drops to zero, the reference counted string is deleted.
+ GLOBAL VARIABLES
+ COMMENTS, BUGS, ASSUMPTIONS
+ EXAMPLES
+ REVISION LOG
+--------------------------------------------------------------------------*/
+herr_t
+H5RS_decr(H5RS_str_t *rs)
+{
+ herr_t ret_value=SUCCEED; /* Return value */
+
+ FUNC_ENTER_NOAPI(H5RS_decr,FAIL);
+
+ /* Sanity check */
+ assert(rs);
+ assert(rs->n > 0);
+
+ /* Decrement reference count for string */
+ if((--rs->n)==0) {
+ if(!rs->wrapped)
+ H5FL_BLK_FREE(str_buf,rs->s);
+ H5FL_FREE(H5RS_str_t,rs);
+ } /* end if */
+
+done:
+ FUNC_LEAVE(ret_value);
+} /* end H5RS_decr() */
+
+
+/*--------------------------------------------------------------------------
+ NAME
+ H5RS_incr
+ PURPOSE
+ Increment the reference count for a ref-counted string
+ USAGE
+ herr_t H5RS_incr(rs)
+ H5RS_str_t *rs; IN/OUT: Ref-counted string to increment count of
+
+ RETURNS
+ Non-negative on success/Negative on failure
+ DESCRIPTION
+ Increment the reference count for a reference counted string.
+ GLOBAL VARIABLES
+ COMMENTS, BUGS, ASSUMPTIONS
+ EXAMPLES
+ REVISION LOG
+--------------------------------------------------------------------------*/
+herr_t
+H5RS_incr(H5RS_str_t *rs)
+{
+ herr_t ret_value=SUCCEED; /* Return value */
+
+ FUNC_ENTER_NOAPI(H5RS_incr,FAIL);
+
+ /* Sanity check */
+ assert(rs);
+ assert(rs->n > 0);
+
+ /* If the ref-counted string started life as a wrapper around an existing
+ * string, duplicate the string now, so that the wrapped string can go out
+ * scope appropriately.
+ */
+ if(rs->wrapped) {
+ rs->s=H5RS_xstrdup(rs->s);
+ rs->wrapped=0;
+ } /* end if */
+
+ /* Increment reference count for string */
+ rs->n++;
+
+done:
+ FUNC_LEAVE(ret_value);
+} /* end H5RS_incr() */
+
+
+/*--------------------------------------------------------------------------
+ NAME
+ H5RS_dup
+ PURPOSE
+ "Duplicate" a ref-counted string
+ USAGE
+ H5RS_str_t H5RS_incr(rs)
+ H5RS_str_t *rs; IN/OUT: Ref-counted string to "duplicate"
+
+ RETURNS
+ Returns a pointer to ref-counted string on success, NULL on failure.
+ DESCRIPTION
+ Increment the reference count for the reference counted string and return
+ a pointer to it.
+ GLOBAL VARIABLES
+ COMMENTS, BUGS, ASSUMPTIONS
+ EXAMPLES
+ REVISION LOG
+--------------------------------------------------------------------------*/
+H5RS_str_t *
+H5RS_dup(H5RS_str_t *ret_value)
+{
+ FUNC_ENTER_NOAPI(H5RS_dup,NULL);
+
+ /* Check for valid reference counted string */
+ if(ret_value!=NULL)
+ /* Increment reference count for string */
+ ret_value->n++;
+
+done:
+ FUNC_LEAVE(ret_value);
+} /* end H5RS_dup() */
+
+
+/*--------------------------------------------------------------------------
+ NAME
+ H5RS_cmp
+ PURPOSE
+ Compare two ref-counted strings
+ USAGE
+ int H5RS_cmp(rs1,rs2)
+ const H5RS_str_t *rs1; IN: First Ref-counted string to compare
+ const H5RS_str_t *rs2; IN: Second Ref-counted string to compare
+
+ RETURNS
+ Returns positive, negative or 0 for comparison of two r-strings [same as
+ strcmp()]
+ DESCRIPTION
+ Compare two ref-counted strings and return a value indicating their sort
+ order [same as strcmp()]
+ GLOBAL VARIABLES
+ COMMENTS, BUGS, ASSUMPTIONS
+ EXAMPLES
+ REVISION LOG
+--------------------------------------------------------------------------*/
+int
+H5RS_cmp(const H5RS_str_t *rs1, const H5RS_str_t *rs2)
+{
+ /* Can't return invalid value from this function */
+ FUNC_ENTER_NOINIT(H5RS_cmp);
+
+ /* Sanity check */
+ assert(rs1);
+ assert(rs1->s);
+ assert(rs2);
+ assert(rs2->s);
+
+ FUNC_LEAVE(HDstrcmp(rs1->s,rs2->s));
+} /* end H5RS_cmp() */
+
+
+/*--------------------------------------------------------------------------
+ NAME
+ H5RS_len
+ PURPOSE
+ Compute the length of a ref-counted string
+ USAGE
+ ssize_t H5RS_cmp(rs)
+ const H5RS_str_t *rs; IN: Ref-counted string to compute length of
+
+ RETURNS
+ Returns non-negative value on success, negative value on failure
+ DESCRIPTION
+ Compute the length of a ref-counted string. [same as strlen()]
+ GLOBAL VARIABLES
+ COMMENTS, BUGS, ASSUMPTIONS
+ EXAMPLES
+ REVISION LOG
+--------------------------------------------------------------------------*/
+ssize_t
+H5RS_len(const H5RS_str_t *rs)
+{
+ ssize_t ret_value; /* Return value */
+
+ FUNC_ENTER_NOAPI(H5RS_len,FAIL);
+
+ /* Sanity check */
+ assert(rs);
+ assert(rs->s);
+
+ ret_value=HDstrlen(rs->s);
+
+done:
+ FUNC_LEAVE(ret_value);
+} /* end H5RS_len() */
+
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