[svn-r346] Changes since 19980410

----------------------

./html/H5.format.html
./src/H5E.c
./src/H5Epublic.h
./src/H5F.c
./src/H5G.c
./src/H5Gent.c
./src/H5Gnode.c
./src/H5Gprivate.h
./src/h5ls.c
./test/Makefile.in
	Symbolic links are now supported.  The ./test/links program
	will create a `links.h5' file that demonstrates hard links,
	soft links, dangling links, and recursive links.  A symbolic
	link is a symbol table entity and doesn't have an object
	header.  It's format is described in H5.format.hml.

./src/H5G.c
./src/H5Gpublic.h
./src/h5ls.c
	Implemented H5Gstat() and H5Gget_linkval() as documented by
	Quincey.  The `H5G_type_t type' field of `H5G_stat_t' was
	changed to `int type' because H5G_type_t was already used and
	the `type' data type should be open-ended.

./src/H5Ffamily.c
	Removed an incorrect diagnostic message.

./test/big.c
	Added read/write calls to test partial I/O to big contiguous
	datasets.  With no arguments it writes to a dataset and prints
	the list of points written which should be redirected to a
	file.  With an argument (the name of a file containing the
	stdout of a run with no arguments) values are read from the
	dataset.  One would typically say `big >x && big x'.

1 files changed, 150 insertions, 10 deletions

diff --git a/test/big.c b/test/big.c
index 44d550f..a75eb5d 100644
--- a/test/big.c
+++ b/test/big.c
@@ -6,7 +6,26 @@
  *              Wednesday, April  8, 1998
  */
 #include <assert.h>
+#include <ctype.h>
 #include <hdf5.h>
+#include <math.h>
+#include <stdlib.h>
+
+#include <H5private.h> /*needed for HDfprintf() */
+
+#define FNAME		"big%05d.h5"
+#define WRT_N		50
+#define WRT_SIZE	4*1024
+
+static hsize_t
+randll (hsize_t limit)
+{
+    hsize_t	acc = rand ();
+    acc *= rand ();
+
+    return acc % limit;
+}
+
 
 
 /*-------------------------------------------------------------------------
@@ -25,12 +44,16 @@
  *
  *-------------------------------------------------------------------------
  */
-int
-main (void)
+static void
+writer (int wrt_n)
 {
     hsize_t	size1[4] = {8, 1024, 1024, 1024};
     hsize_t	size2[1] = {8589934592LL};
-    hid_t	plist, file, space1, space2, dset;
+    hssize_t	hs_start[1];
+    hsize_t	hs_size[1];
+    hid_t	plist, file, space1, space2, mem_space, d1, d2;
+    int		*buf = malloc (sizeof(int) * WRT_SIZE);
+    int		i, j;
 
     /*
      * Make sure that `hsize_t' is large enough to represent the entire data
@@ -44,20 +67,137 @@ main (void)
      */
     plist = H5Pcreate (H5P_FILE_ACCESS);
     H5Pset_family (plist, 30, H5P_DEFAULT);
-    file = H5Fcreate ("big%05d.h5", H5F_ACC_TRUNC, H5P_DEFAULT, plist);
+    file = H5Fcreate (FNAME, H5F_ACC_TRUNC, H5P_DEFAULT, plist);
 
     /* Create simple data spaces according to the size specified above. */
     space1 = H5Screate_simple (4, size1, size1);
     space2 = H5Screate_simple (1, size2, size2);
 
     /* Create the datasets */
-    dset = H5Dcreate (file, "d1", H5T_NATIVE_INT, space1, H5P_DEFAULT);
-    H5Dclose (dset);
-    dset = H5Dcreate (file, "d2", H5T_NATIVE_INT, space2, H5P_DEFAULT);
-    H5Dclose (dset);
-    
+    d1 = H5Dcreate (file, "d1", H5T_NATIVE_INT, space1, H5P_DEFAULT);
+    d2 = H5Dcreate (file, "d2", H5T_NATIVE_INT, space2, H5P_DEFAULT);
+
+    /* Write some things to them randomly */
+    hs_size[0] = WRT_SIZE;
+    mem_space = H5Screate_simple (1, hs_size, hs_size);
+    for (i=0; i<wrt_n; i++) {
+	hs_start[0] = randll (size2[0]);
+	HDfprintf (stdout, "#%03d 0x%016Hx\n", i, hs_start[0]);
+	H5Sset_hyperslab (space2, hs_start, hs_size, NULL);
+	for (j=0; j<WRT_SIZE; j++) {
+	    buf[j] = i+1;
+	}
+	H5Dwrite (d2, H5T_NATIVE_INT, mem_space, space2, H5P_DEFAULT, buf);
+    }
+	
+    H5Dclose (d1);
+    H5Dclose (d2);
+    H5Sclose (mem_space);
     H5Sclose (space1);
     H5Sclose (space2);
     H5Fclose (file);
-    exit (0);
+    free (buf);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	reader
+ *
+ * Purpose:	Reads some data from random locations in the dataset.
+ *
+ * Return:	void
+ *
+ * Programmer:	Robb Matzke
+ *              Friday, April 10, 1998
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static void
+reader (const char *script_name)
+{
+    FILE	*script;
+    hid_t	plist, file, mspace, fspace, d2;
+    char	ln[64], *s;
+    hssize_t	hs_offset[1];
+    hsize_t	hs_size[1] = {WRT_SIZE};
+    int		*buf = malloc (sizeof(int) * WRT_SIZE);
+    int		i, j, zero, wrong;
+
+    /* Open script file */
+    script = fopen (script_name, "r");
+
+    /* Open HDF5 file */
+    plist = H5Pcreate (H5P_FILE_ACCESS);
+    H5Pset_family (plist, 30, H5P_DEFAULT);
+    file = H5Fopen (FNAME, H5F_ACC_RDONLY, plist);
+
+    /* Open the dataset */
+    d2 = H5Dopen (file, "d2");
+    fspace = H5Dget_space (d2);
+
+    /* Describe `buf' */
+    mspace = H5Screate_simple (1, hs_size, hs_size);
+
+    /* Read each region */
+    while (fgets (ln, sizeof(ln), script)) {
+	if ('#'!=ln[0]) break;
+	i = strtol (ln+1, &s, 10);
+	hs_offset[0] = HDstrtoll (s, NULL, 0);
+	HDfprintf (stdout, "#%03d 0x%016Hx", i, hs_offset[0]);
+	fflush (stdout);
+
+	H5Sset_hyperslab (fspace, hs_offset, hs_size, NULL);
+	H5Dread (d2, H5T_NATIVE_INT, mspace, fspace, H5P_DEFAULT, buf);
+
+	/* Check */
+	for (j=zero=wrong=0; j<WRT_SIZE; j++) {
+	    if (0==buf[j]) zero++;
+	    else if (buf[j]!=i+1) wrong++;
+	}
+	if (zero) {
+	    printf (" *FAILED*  (%d zeros)\n", zero);
+	} else if (wrong) {
+	    printf (" *SKIPPED* (possible overlap with another region)\n");
+	} else {
+	    printf ("  PASSED\n");
+	}
+    }
+
+    H5Dclose (d2);
+    H5Sclose (mspace);
+    H5Sclose (fspace);
+    H5Fclose (file);
+    fclose (script);
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function:	main
+ *
+ * Purpose:	
+ *
+ * Return:	Success:	
+ *
+ *		Failure:	
+ *
+ * Programmer:	Robb Matzke
+ *              Friday, April 10, 1998
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+int
+main (int argc, char *argv[])
+{
+    if (1==argc) {
+	writer (WRT_N);
+    } else if (isdigit (argv[1][0])) {
+	writer (strtol (argv[1], NULL, 0));
+    } else {
+	reader (argv[1]);
+    }
+    return 0;
 }