Plugin test rework

Cleanup of plugin test code. Renames many files. Prep for VOL branch merge.

1 files changed, 119 insertions, 0 deletions

diff --git a/test/filter_plugin3_dsets.c b/test/filter_plugin3_dsets.c
new file mode 100644
index 0000000..b43020f
--- /dev/null
+++ b/test/filter_plugin3_dsets.c
@@ -0,0 +1,119 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Copyright by The HDF Group.                                               *
+ * 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 COPYING file, which can be found at the root of the source code       *
+ * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
+ * If you do not have access to either file, you may request a copy from     *
+ * help@hdfgroup.org.                                                        *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/*
+ * Purpose:	Test dataset filter plugin for the filter_pluging.c test.
+ *          This filter makes an HDF5 API call to ensure that works correctly.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "H5PLextern.h"
+
+#define FILTER3_ID              259
+
+#define PUSH_ERR(func, minor, str) H5Epush2(H5E_DEFAULT, __FILE__, func, __LINE__, H5E_ERR_CLS, H5E_PLUGIN, minor, str)
+
+static size_t add_sub_value_hdf5(unsigned int flags, size_t cd_nelmts,
+                const unsigned int *cd_values, size_t nbytes, size_t *buf_size, void **buf);
+
+/* Filter class struct */
+const H5Z_class2_t FILTER_INFO[1] = {{
+    H5Z_CLASS_T_VERS,                   /* H5Z_class_t version              */
+    FILTER3_ID,                         /* Filter ID number                 */
+    1,                                  /* Encoding enabled                 */
+    1,                                  /* Decoding enabled                 */
+    "test filter plugin 3",             /* Filter name for debugging        */
+    NULL,                               /* The "can apply" callback         */
+    NULL,                               /* The "set local" callback         */
+    (H5Z_func_t)add_sub_value_hdf5,     /* The actual filter function       */
+}};
+
+H5PL_type_t   H5PLget_plugin_type(void) {return H5PL_TYPE_FILTER;}
+const void    *H5PLget_plugin_info(void) {return FILTER_INFO;}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	add_sub_value_hdf5
+ *
+ * Purpose:     On write:
+ *                  Adds a caller-supplied value to the element
+ *              On read:
+ *                  Subtracts a caller-supplied value from the element
+ *
+ *              NOTE:   This filter is identical to filter #1 only it makes
+ *                      an HDF5 library call to ensure doing that doesn't
+ *                      cause problems.
+ *
+ * Return:      Success:    Data chunk size in bytes
+ *              Failure:    0
+ *
+ *-------------------------------------------------------------------------
+ */
+static size_t
+add_sub_value_hdf5(unsigned int flags, size_t cd_nelmts, const unsigned int *cd_values,
+        size_t nbytes, size_t *buf_size, void **buf)
+{
+    int *int_ptr = (int *)*buf;         /* Pointer to the data values               */
+    size_t buf_left = *buf_size;        /* Amount of data buffer left to process    */
+    int value = 0;                      /* Data value to add/subtract               */
+    unsigned majnum = 0;                /* Output data from the HDF5 library call   */
+    unsigned minnum = 0;
+    unsigned relnum = 0;
+
+    /* Check for the library version.
+     * We don't do anything with this information - it's just to ensure that
+     * HDF5 library calls work properly from inside filter plugins.
+     */
+    if (H5get_libversion(&majnum, &minnum, &relnum) < 0) {
+        PUSH_ERR("filter plugin 3", H5E_CALLBACK, "H5get_libversion");
+        return 0;
+    }
+
+    /* Check for the correct number of parameters */
+    if (cd_nelmts == 0)
+        return 0;
+
+    /* Check that permanent parameters are set correctly */
+    if (cd_values[0] > 9)
+        return 0;
+
+    /* Ensure that the version numbers match what was passed in.
+     * Again, this is trivial work, just to ensure that the library calls are
+     * working properly.
+     */
+    if (majnum != cd_values[1] || minnum != cd_values[2]) {
+        PUSH_ERR("filter plugin 3", H5E_CALLBACK, "library versions do not match");
+        return 0;
+    }
+
+    value = (int)cd_values[0];
+
+    if (flags & H5Z_FLAG_REVERSE) {
+        /* READ - Substract the given value from all the data values */
+        while (buf_left > 0) {
+            *int_ptr++ -= value;
+            buf_left -= sizeof(int);
+        }
+    }
+    else {
+        /* WRITE - Add the given value to all the data values */
+        while (buf_left > 0) {
+            *int_ptr++ += value;
+            buf_left -= sizeof(int);
+        }
+    }
+
+    return nbytes;
+} /* end add_sub_value_hdf5() */
+