From 93fd360fb1d2c8f7350350dbaa142b5def9c5da5 Mon Sep 17 00:00:00 2001
From: Albert Cheng <acheng@hdfgroup.org>
Date: Tue, 18 Sep 2001 00:55:14 -0500
Subject: [svn-r4449] Purpose:     Feature Description:     Added an example
 program showing how to use different virtual     file drivers.  First example
 is to show the Split File driver. Platforms tested:     eirene.

---
 examples/Makefile.in  |  9 ++++--
 examples/h5_drivers.c | 89 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 95 insertions(+), 3 deletions(-)
 create mode 100644 examples/h5_drivers.c

diff --git a/examples/Makefile.in b/examples/Makefile.in
index 8ec891c..fe5f296 100644
--- a/examples/Makefile.in
+++ b/examples/Makefile.in
@@ -17,12 +17,12 @@ LIBHDF5=../src/libhdf5.la
 ## `make check' will run. List them in the order they should be run.
 TEST_PROGS_PARA=ph5example
 TEST_PROGS=h5_write h5_read h5_extend_write h5_chunk_read h5_compound \
-	h5_group h5_select h5_attribute h5_mount h5_reference \
+	h5_group h5_select h5_attribute h5_mount h5_reference h5_drivers \
 	$(TEST_PROGS_PARA)
 
 ## These are the files that `make clean' (and derivatives) will remove from
 ## this directory.
-CLEAN=*.h5
+CLEAN=*.h5 *.raw *.meta
 
 ## List all source files here.  The list of object files will be
 ## created by replacing the `.c' with a `.o'.  This list is necessary
@@ -30,7 +30,7 @@ CLEAN=*.h5
 TEST_SRC_PARA=ph5example.c
 TEST_SRC=h5_chunk_read.c h5_compound.c h5_extend_write.c h5_group.c \
 	 h5_read.c h5_write.c h5_select.c h5_attribute.c h5_mount.c \
-	 h5_reference.c \
+	 h5_reference.c h5_drivers.c \
 	 $(TEST_SRC_PARA)
 TEST_OBJ=$(TEST_SRC:.c=.lo)
 
@@ -66,6 +66,9 @@ h5_mount: h5_mount.lo
 h5_reference: h5_reference.lo
 	@$(LT_LINK_EXE) $(CFLAGS) -o $@ h5_reference.lo $(LIBHDF5) $(LDFLAGS) $(LIBS)
 
+h5_drivers: h5_drivers.lo
+	@$(LT_LINK_EXE) $(CFLAGS) -o $@ h5_drivers.lo $(LIBHDF5) $(LDFLAGS) $(LIBS)
+
 ph5example: ph5example.lo
 	@$(LT_LINK_EXE) $(CFLAGS) -o $@ $@.lo $(LIBHDF5) $(LDFLAGS) $(LIBS)
 
diff --git a/examples/h5_drivers.c b/examples/h5_drivers.c
new file mode 100644
index 0000000..4c4d6d9
--- /dev/null
+++ b/examples/h5_drivers.c
@@ -0,0 +1,89 @@
+/*  
+ * This shows how to use the hdf5 virtual file drivers.
+ * The example codes here do not check return values for the
+ * sake of simplicity.  As in all proper programs, return codes
+ * should be checked.
+ */
+ 
+#include "hdf5.h"
+#include "stdlib.h"
+
+/* global variables */
+int cleanup_g	=	-1;	/* whether to clean.  Init to not set. */
+
+/* prototypes */
+void cleanup(const char *);
+void split_file(void);
+
+
+/*
+ * Cleanup a file unless $HDF5_NOCLEANUP is set.
+ */
+void
+cleanup(const char *filename)
+{
+    if (cleanup_g == -1)
+	cleanup_g = getenv("HDF5_NOCLEANUP") ? 0 : 1;
+    if (cleanup_g)
+	remove(filename);
+}
+
+
+/*
+ * This shows how to use the split file driver.
+ */
+void
+split_file(void)
+{
+    hid_t fapl, fid;
+
+    /* Example 1: Both metadata and rawdata files are in the same  */
+    /*    directory.   Use Station1-m.h5 and Station1-r.h5 as      */
+    /*    the metadata and rawdata files.                          */
+    fapl = H5Pcreate(H5P_FILE_ACCESS);
+    H5Pset_fapl_split(fapl, "-m.h5", H5P_DEFAULT, "-r.h5", H5P_DEFAULT);
+    fid=H5Fcreate("Station1",H5F_ACC_TRUNC,H5P_DEFAULT,fapl);
+    /* using the file ... */
+    H5Fclose(fid);
+    H5Pclose(fapl);
+    /* Remove files created */
+    cleanup("Station1-m.h5");
+    cleanup("Station1-r.h5");
+
+    /* Example 2: metadata and rawdata files are in different      */
+    /*    directories.  Use PointA-m.h5 and /tmp/PointA-r.h5 as    */
+    /*    the metadata and rawdata files.                          */
+    fapl = H5Pcreate(H5P_FILE_ACCESS);
+    H5Pset_fapl_split(fapl, "-m.h5", H5P_DEFAULT, "/tmp/%s-r.h5", H5P_DEFAULT);
+    fid=H5Fcreate("PointA",H5F_ACC_TRUNC,H5P_DEFAULT,fapl);
+    /* using the file ... */
+    H5Fclose(fid);
+    H5Pclose(fapl);
+    /* Remove files created */
+    cleanup("PointA-m.h5");
+    cleanup("/tmp/PointA-r.h5");
+
+    /* Example 3: Using default extension names for the metadata   */
+    /*    and rawdata files.  Use Measure.meta and Measure.raw as  */
+    /*    the metadata and rawdata files.                          */
+    fapl = H5Pcreate(H5P_FILE_ACCESS);
+    H5Pset_fapl_split(fapl, NULL, H5P_DEFAULT, NULL, H5P_DEFAULT);
+    fid=H5Fcreate("Measure",H5F_ACC_TRUNC,H5P_DEFAULT,fapl);
+    /* using the file ... */
+    H5Fclose(fid);
+    H5Pclose(fapl);
+    /* Remove files created */
+    cleanup("Measure.meta");
+    cleanup("Measure.raw");
+}
+
+
+/* Main Body */
+int
+main (void)
+{
+    
+    split_file();
+
+    return(0);
+}     
-- 
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