[svn-r19406] Purpose:

 Add --exclude-path option

Description:
 Specified path to an object will be excluded from comparing the two files or two groups. If group is specified all the member objects will be excluded.
 Related to "1890:  h5diff excluding object for file comparison via command line"

Tested:
 jam, amani and heiwa

14 files changed, 612 insertions, 17 deletions

diff --git a/tools/h5diff/CMakeLists.txt b/tools/h5diff/CMakeLists.txt
index c31f650..a22e0e3 100644
--- a/tools/h5diff/CMakeLists.txt
+++ b/tools/h5diff/CMakeLists.txt
@@ -114,6 +114,10 @@ IF (BUILD_TESTING)
       h5diff_457.txt
       h5diff_458.txt
       h5diff_459.txt
+      h5diff_480.txt
+      h5diff_481.txt
+      h5diff_482.txt
+      h5diff_483.txt
       h5diff_50.txt
       h5diff_51.txt
       h5diff_52.txt
@@ -190,6 +194,10 @@ IF (BUILD_TESTING)
       h5diff_danglelinks2.h5
       h5diff_grp_recurse1.h5
       h5diff_grp_recurse2.h5
+      h5diff_exclude1-1.h5
+      h5diff_exclude1-2.h5
+      h5diff_exclude2-1.h5
+      h5diff_exclude2-2.h5
   )
 
   FOREACH (txt_file ${HDF5_REFERENCE_FILES})
@@ -296,6 +304,13 @@ SET (DANGLE_LINK_FILE1 h5diff_danglelinks1.h5)
 SET (DANGLE_LINK_FILE2 h5diff_danglelinks2.h5)
 SET (GRP_RECURSE_FILE1 h5diff_grp_recurse1.h5)
 SET (GRP_RECURSE_FILE2 h5diff_grp_recurse2.h5)
+# same structure, same obj name with different value
+SET (EXCLUDE_FILE1_1 h5diff_exclude1-1.h5)
+SET (EXCLUDE_FILE1_2 h5diff_exclude1-2.h5)
+# different structure and obj names
+SET (EXCLUDE_FILE2_1 h5diff_exclude2-1.h5)
+SET (EXCLUDE_FILE2_2 h5diff_exclude2-2.h5)
+
 
 # ############################################################################
 # # Common usage
@@ -716,6 +731,27 @@ ADD_H5_TEST (h5diff_512 -v --follow-symlinks ${GRP_RECURSE_FILE1} ${GRP_RECURSE_
 # circled soft2ext-link vs soft2ext-link
 ADD_H5_TEST (h5diff_513 -v ${GRP_RECURSE_FILE1} ${GRP_RECURSE_FILE2} /slink_grp10 /slink_grp11)
 ADD_H5_TEST (h5diff_514 -v --follow-symlinks ${GRP_RECURSE_FILE1} ${GRP_RECURSE_FILE2} /slink_grp10 /slink_grp11)
+
+
+# ##############################################################################
+# # Exclude path (--exclude-path)
+# ##############################################################################
+#
+# Same structure, same names and different value.
+#
+# Exclude the object with different value. Expect return - same
+ADD_H5_TEST (h5diff_480 0 -v --exclude-path /group1/dset3 ${EXCLUDE_FILE1_1} ${EXCLUDE_FILE1_2})
+# Verify different by not excluding. Expect return - diff
+ADD_H5_TEST (h5diff_481 1 -v ${EXCLUDE_FILE1_1} ${EXCLUDE_FILE1_2})
+
+#
+# Different structure, different names. 
+#
+# Exclude all the different objects. Expect return - same
+ADD_H5_TEST (h5diff_482 0 -v --exclude-path "/group1" --exclude-path "/dset1" ${EXCLUDE_FILE2_1} ${EXCLUDE_FILE2_2})
+# Exclude only some different objects. Expect return - diff
+ADD_H5_TEST (h5diff_483 1 -v --exclude-path "/group1" ${EXCLUDE_FILE2_1} ${EXCLUDE_FILE2_2})
+
   
 ENDIF (BUILD_TESTING)
 
diff --git a/tools/h5diff/h5diff_common.c b/tools/h5diff/h5diff_common.c
index b897a7f..a678b2f 100644
--- a/tools/h5diff/h5diff_common.c
+++ b/tools/h5diff/h5diff_common.c
@@ -42,6 +42,7 @@ static struct long_options l_opts[] = {
     { "use-system-epsilon", no_arg, 'e' },
     { "follow-symlinks", no_arg, 'l' },
     { "no-dangling-links", no_arg, 'x' },
+    { "exclude-path", require_arg, 'E' },
     { NULL, 0, '\0' }
 };
 
@@ -64,6 +65,7 @@ void parse_command_line(int argc,
 {
 
     int opt;
+    struct exclude_path_list *exclude_head, *exclude_prev, *exclude_node;
 
     /* process the command-line */
     memset(options, 0, sizeof (diff_opt_t));
@@ -74,6 +76,9 @@ void parse_command_line(int argc,
     /* NaNs are handled by default */
     options->do_nans = 1;
 
+    /* init for exclude-path option */
+    exclude_head = NULL;
+
     /* parse command line options */
     while ((opt = get_option(argc, argv, s_opts, l_opts)) != EOF)
     {
@@ -104,6 +109,35 @@ void parse_command_line(int argc,
         case 'x':
             options->no_dangle_links = 1;
             break;
+        case 'E':
+            options->exclude_path = 1;
+            
+            /* create linked list of excluding objects */
+            if( (exclude_node = (struct exclude_path_list*) malloc(sizeof(struct exclude_path_list))) == NULL)
+            {
+                printf("Error: lack of memory!\n");
+                h5diff_exit(EXIT_FAILURE);
+            }
+
+            /* init */
+            exclude_node->obj_path = opt_arg;
+            exclude_node->obj_type = H5TRAV_TYPE_UNKNOWN;
+            exclude_prev = exclude_head;
+            
+            if (NULL == exclude_head)            
+            {
+                exclude_head = exclude_node;
+                exclude_head->next = NULL;
+            }
+            else
+            {
+                while(NULL != exclude_prev->next)
+                    exclude_prev=exclude_prev->next;
+
+                exclude_node->next = NULL;
+                exclude_prev->next = exclude_node;
+            }            
+            break;
         case 'd':
             options->d=1;
 
@@ -163,6 +197,10 @@ void parse_command_line(int argc,
         }
     }
 
+    /* if exclude-path option is used, keep the exclude path list */
+    if (options->exclude_path)
+        options->exclude = exclude_head;
+
     /* if use system epsilon, unset -p and -d option */
     if (options->use_system_epsilon)
         options->d = options->p = 0;
diff --git a/tools/h5diff/h5diffgentest.c b/tools/h5diff/h5diffgentest.c
index 1f6cb2a..20797f4 100644
--- a/tools/h5diff/h5diffgentest.c
+++ b/tools/h5diff/h5diffgentest.c
@@ -57,6 +57,12 @@
 #define DANGLE_LINK_FILE2   "h5diff_danglelinks2.h5"
 #define GRP_RECURSE_FILE1   "h5diff_grp_recurse1.h5"
 #define GRP_RECURSE_FILE2   "h5diff_grp_recurse2.h5"
+/* same structure, same obj name with different value */
+#define EXCLUDE_FILE1_1     "h5diff_exclude1-1.h5"
+#define EXCLUDE_FILE1_2     "h5diff_exclude1-2.h5"
+/* different structure and obj names */
+#define EXCLUDE_FILE2_1     "h5diff_exclude2-1.h5"
+#define EXCLUDE_FILE2_2     "h5diff_exclude2-2.h5"
 
 #define UIMAX    4294967295u /*Maximum value for a variable of type unsigned int */
 #define STR_SIZE 3
@@ -102,6 +108,8 @@ static int test_external_links(const char *fname1, const char *fname2);
 static int test_ext2soft_links(const char *fname1, const char *fname2);
 static int test_dangle_links(const char *fname1, const char *fname2);
 static int test_group_recurse(const char *fname1, const char *fname2);
+static int test_exclude_obj1(const char *fname1, const char *fname2);
+static int test_exclude_obj2(const char *fname1, const char *fname2);
 
 /* called by test_attributes() and test_datasets() */
 static void write_attr_in(hid_t loc_id,const char* dset_name,hid_t fid,int make_diffs);
@@ -153,6 +161,10 @@ int main(void)
 
     test_group_recurse(GRP_RECURSE_FILE1, GRP_RECURSE_FILE2);
 
+    test_exclude_obj1(EXCLUDE_FILE1_1, EXCLUDE_FILE1_2);
+    test_exclude_obj2(EXCLUDE_FILE2_1, EXCLUDE_FILE2_2);
+
+
     return 0;
 }
 
@@ -2292,6 +2304,287 @@ out:
 }
 
 /*-------------------------------------------------------------------------
+*
+* Purpose: Create test files for excluding obj.
+*          Same structure, same obj names
+* Test : exclude obj with different value to verify the rest are same
+*
+* Programmer: Jonathan Kim (July, 21, 2010)
+*
+*-------------------------------------------------------------------------*/
+static int test_exclude_obj1(const char *fname1, const char *fname2)
+{
+    hid_t   fid1=0;
+    hid_t   fid2=0;
+    hid_t   gid1=0;
+    hid_t   gid2=0;
+    hsize_t dims2[2] = {2,4};
+    int data1[4][2] = {{0,0},{0,0},{0,0},{0,0}};
+    int data2[4][2] = {{0,1},{2,3},{1,2},{3,4}};
+    herr_t  status = SUCCEED;
+
+    /*-----------------------------------------------------------------------
+    * Create file(s)
+    *------------------------------------------------------------------------*/
+    fid1 = H5Fcreate (fname1, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+    if (fid1 < 0)
+    {
+        fprintf(stderr, "Error: %s> H5Fcreate failed.\n", fname1);
+        status = FAIL;
+        goto out;
+    }
+
+    fid2 = H5Fcreate (fname2, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+    if (fid2 < 0)
+    {
+        fprintf(stderr, "Error: %s> H5Fcreate failed.\n", fname2);
+        status = FAIL;
+        goto out;
+    }
+
+
+   /*-----------------------------------------------------------------------
+    * Group
+    *------------------------------------------------------------------------*/
+    /* file1 */
+    gid1 = H5Gcreate2(fid1, "group1", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+    if (gid1 < 0)
+    {
+        fprintf(stderr, "Error: %s> H5Gcreate2 failed.\n", fname1);
+        status = FAIL;
+        goto out;
+    }
+
+    /* file2 */
+    gid2 = H5Gcreate2(fid2, "group1", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+
+    if (gid2 < 0)
+    {
+        fprintf(stderr, "Error: %s> H5Gcreate2 failed.\n", fname2);
+        status = FAIL;
+        goto out;
+    }
+
+
+    /*-----------------------------------------------------------------------
+    * Datasets 
+    *------------------------------------------------------------------------*/
+    /* file1 */
+    status = write_dset(fid1,2,dims2,"dset1",H5T_NATIVE_INT,data1);
+    if (status == FAIL)
+    {
+        fprintf(stderr, "Error: %s> write_dset failed\n", fname1);
+        status = FAIL;
+        goto out;
+    }
+
+    status = write_dset(gid1,2,dims2,"dset2",H5T_NATIVE_INT,data1);
+    if (status == FAIL)
+    {
+        fprintf(stderr, "Error: %s> write_dset failed\n", fname1);
+        status = FAIL;
+        goto out;
+    }
+
+    status = write_dset(gid1,2,dims2,"dset3",H5T_NATIVE_INT,data1);
+    if (status == FAIL)
+    {
+        fprintf(stderr, "Error: %s> write_dset failed\n", fname1);
+        status = FAIL;
+        goto out;
+    }
+
+
+    /* file2 */
+    status = write_dset(fid2,2,dims2,"dset1",H5T_NATIVE_INT,data1);
+    if (status == FAIL)
+    {
+        fprintf(stderr, "Error: %s> write_dset failed\n", fname2);
+        status = FAIL;
+        goto out;
+    }
+
+    status = write_dset(gid2,2,dims2,"dset2",H5T_NATIVE_INT,data1);
+    if (status == FAIL)
+    {
+        fprintf(stderr, "Error: %s> write_dset failed\n", fname2);
+        status = FAIL;
+        goto out;
+    }
+
+    status = write_dset(gid2,2,dims2,"dset3",H5T_NATIVE_INT,data2);
+    if (status == FAIL)
+    {
+        fprintf(stderr, "Error: %s> write_dset failed\n", fname2);
+        status = FAIL;
+        goto out;
+    }
+
+
+out:
+    /*-----------------------------------------------------------------------
+    * Close
+    *-----------------------------------------------------------------------*/
+    if(fid1)
+        H5Fclose(fid1);
+    if(fid2)
+        H5Fclose(fid2);
+    if(gid1)
+        H5Gclose(gid1);
+    if(gid2)
+        H5Gclose(gid2);
+
+    return status;
+}
+
+/*-------------------------------------------------------------------------
+*
+* Purpose: Create test files for excluding obj.
+*          different structure and name
+* Test : exclude different objs to verify the rest are same 
+*
+* Programmer: Jonathan Kim (July, 21, 2010)
+*
+*-------------------------------------------------------------------------*/
+static int test_exclude_obj2(const char *fname1, const char *fname2)
+{
+    hid_t   fid1=0;
+    hid_t   fid2=0;
+    hid_t   gid1=0;
+    hid_t   gid2=0;
+    hid_t   gid3=0;
+    hsize_t dims2[2] = {2,4};
+    int data1[4][2] = {{0,0},{0,0},{0,0},{0,0}};
+    int data2[4][2] = {{0,1},{2,3},{1,2},{3,4}};
+    herr_t  status = SUCCEED;
+
+    /*-----------------------------------------------------------------------
+    * Create file(s)
+    *------------------------------------------------------------------------*/
+    fid1 = H5Fcreate (fname1, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+    if (fid1 < 0)
+    {
+        fprintf(stderr, "Error: %s> H5Fcreate failed.\n", fname1);
+        status = FAIL;
+        goto out;
+    }
+
+    fid2 = H5Fcreate (fname2, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+    if (fid2 < 0)
+    {
+        fprintf(stderr, "Error: %s> H5Fcreate failed.\n", fname2);
+        status = FAIL;
+        goto out;
+    }
+
+
+   /*-----------------------------------------------------------------------
+    * Group
+    *------------------------------------------------------------------------*/
+    /* file1 */
+    gid1 = H5Gcreate2(fid1, "group10", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+    if (gid1 < 0)
+    {
+        fprintf(stderr, "Error: %s> H5Gcreate2 failed.\n", fname1);
+        status = FAIL;
+        goto out;
+    }
+
+    /* file2 */
+    gid2 = H5Gcreate2(fid2, "group10", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+
+    if (gid2 < 0)
+    {
+        fprintf(stderr, "Error: %s> H5Gcreate2 failed.\n", fname2);
+        status = FAIL;
+        goto out;
+    }
+
+    /* subset name from group10 */
+    gid3 = H5Gcreate2(fid2, "group1", H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+
+    if (gid3 < 0)
+    {
+        fprintf(stderr, "Error: %s> H5Gcreate2 failed.\n", fname2);
+        status = FAIL;
+        goto out;
+    }
+
+
+    /*-----------------------------------------------------------------------
+    * Datasets 
+    *------------------------------------------------------------------------*/
+    /* file1 */
+    status = write_dset(fid1,2,dims2,"dset10",H5T_NATIVE_INT,data1);
+    if (status == FAIL)
+    {
+        fprintf(stderr, "Error: %s> write_dset failed\n", fname1);
+        status = FAIL;
+        goto out;
+    }
+
+    status = write_dset(fid1,2,dims2,"dset1",H5T_NATIVE_INT,data1);
+    if (status == FAIL)
+    {
+        fprintf(stderr, "Error: %s> write_dset failed\n", fname1);
+        status = FAIL;
+        goto out;
+    }
+
+    status = write_dset(gid1,2,dims2,"dset2",H5T_NATIVE_INT,data1);
+    if (status == FAIL)
+    {
+        fprintf(stderr, "Error: %s> write_dset failed\n", fname1);
+        status = FAIL;
+        goto out;
+    }
+
+
+    /* file2 */
+    status = write_dset(fid2,2,dims2,"dset10",H5T_NATIVE_INT,data1);
+    if (status == FAIL)
+    {
+        fprintf(stderr, "Error: %s> write_dset failed\n", fname2);
+        status = FAIL;
+        goto out;
+    }
+
+    status = write_dset(gid2,2,dims2,"dset2",H5T_NATIVE_INT,data1);
+    if (status == FAIL)
+    {
+        fprintf(stderr, "Error: %s> write_dset failed\n", fname2);
+        status = FAIL;
+        goto out;
+    }
+
+    status = write_dset(gid3,2,dims2,"dset3",H5T_NATIVE_INT,data2);
+    if (status == FAIL)
+    {
+        fprintf(stderr, "Error: %s> write_dset failed\n", fname2);
+        status = FAIL;
+        goto out;
+    }
+
+
+out:
+    /*-----------------------------------------------------------------------
+    * Close
+    *-----------------------------------------------------------------------*/
+    if(fid1)
+        H5Fclose(fid1);
+    if(fid2)
+        H5Fclose(fid2);
+    if(gid1)
+        H5Gclose(gid1);
+    if(gid2)
+        H5Gclose(gid2);
+    if(gid3)
+        H5Gclose(gid3);
+
+    return status;
+}
+
+/*-------------------------------------------------------------------------
 * Function: write_attr_in
 *
 * Purpose: write attributes in LOC_ID (dataset, group, named datatype)
diff --git a/tools/h5diff/testfiles/h5diff_480.txt b/tools/h5diff/testfiles/h5diff_480.txt
new file mode 100644
index 0000000..3e1f900
--- /dev/null
+++ b/tools/h5diff/testfiles/h5diff_480.txt
@@ -0,0 +1,17 @@
+
+file1     file2
+---------------------------------------
+    x      x    /              
+    x      x    /dset1         
+    x      x    /group1        
+    x      x    /group1/dset2  
+
+group  : </> and </>
+0 differences found
+dataset: </dset1> and </dset1>
+0 differences found
+group  : </group1> and </group1>
+0 differences found
+dataset: </group1/dset2> and </group1/dset2>
+0 differences found
+EXIT CODE: 0
diff --git a/tools/h5diff/testfiles/h5diff_481.txt b/tools/h5diff/testfiles/h5diff_481.txt
new file mode 100644
index 0000000..c4f2448
--- /dev/null
+++ b/tools/h5diff/testfiles/h5diff_481.txt
@@ -0,0 +1,30 @@
+
+file1     file2
+---------------------------------------
+    x      x    /              
+    x      x    /dset1         
+    x      x    /group1        
+    x      x    /group1/dset2  
+    x      x    /group1/dset3  
+
+group  : </> and </>
+0 differences found
+dataset: </dset1> and </dset1>
+0 differences found
+group  : </group1> and </group1>
+0 differences found
+dataset: </group1/dset2> and </group1/dset2>
+0 differences found
+dataset: </group1/dset3> and </group1/dset3>
+size:           [2x4]           [2x4]
+position        dset3           dset3           difference          
+------------------------------------------------------------
+[ 0 1 ]          0               1               1              
+[ 0 2 ]          0               2               2              
+[ 0 3 ]          0               3               3              
+[ 1 0 ]          0               1               1              
+[ 1 1 ]          0               2               2              
+[ 1 2 ]          0               3               3              
+[ 1 3 ]          0               4               4              
+7 differences found
+EXIT CODE: 1
diff --git a/tools/h5diff/testfiles/h5diff_482.txt b/tools/h5diff/testfiles/h5diff_482.txt
new file mode 100644
index 0000000..5b3c8c1
--- /dev/null
+++ b/tools/h5diff/testfiles/h5diff_482.txt
@@ -0,0 +1,17 @@
+
+file1     file2
+---------------------------------------
+    x      x    /              
+    x      x    /dset10        
+    x      x    /group10       
+    x      x    /group10/dset2 
+
+group  : </> and </>
+0 differences found
+dataset: </dset10> and </dset10>
+0 differences found
+group  : </group10> and </group10>
+0 differences found
+dataset: </group10/dset2> and </group10/dset2>
+0 differences found
+EXIT CODE: 0
diff --git a/tools/h5diff/testfiles/h5diff_483.txt b/tools/h5diff/testfiles/h5diff_483.txt
new file mode 100644
index 0000000..a45e928
--- /dev/null
+++ b/tools/h5diff/testfiles/h5diff_483.txt
@@ -0,0 +1,18 @@
+
+file1     file2
+---------------------------------------
+    x      x    /              
+    x           /dset1         
+    x      x    /dset10        
+    x      x    /group10       
+    x      x    /group10/dset2 
+
+group  : </> and </>
+0 differences found
+dataset: </dset10> and </dset10>
+0 differences found
+group  : </group10> and </group10>
+0 differences found
+dataset: </group10/dset2> and </group10/dset2>
+0 differences found
+EXIT CODE: 1
diff --git a/tools/h5diff/testfiles/h5diff_exclude1-1.h5 b/tools/h5diff/testfiles/h5diff_exclude1-1.h5
new file mode 100644
index 0000000..8b675ea
--- /dev/null
+++ b/tools/h5diff/testfiles/h5diff_exclude1-1.h5
diff --git a/tools/h5diff/testfiles/h5diff_exclude1-2.h5 b/tools/h5diff/testfiles/h5diff_exclude1-2.h5
new file mode 100644
index 0000000..78854cd
--- /dev/null
+++ b/tools/h5diff/testfiles/h5diff_exclude1-2.h5
diff --git a/tools/h5diff/testfiles/h5diff_exclude2-1.h5 b/tools/h5diff/testfiles/h5diff_exclude2-1.h5
new file mode 100644
index 0000000..8923111
--- /dev/null
+++ b/tools/h5diff/testfiles/h5diff_exclude2-1.h5
diff --git a/tools/h5diff/testfiles/h5diff_exclude2-2.h5 b/tools/h5diff/testfiles/h5diff_exclude2-2.h5
new file mode 100644
index 0000000..9e42007
--- /dev/null
+++ b/tools/h5diff/testfiles/h5diff_exclude2-2.h5
diff --git a/tools/h5diff/testh5diff.sh b/tools/h5diff/testh5diff.sh
index f9d58c2..71d78e7 100755
--- a/tools/h5diff/testh5diff.sh
+++ b/tools/h5diff/testh5diff.sh
@@ -56,6 +56,12 @@ DANGLE_LINK_FILE1=h5diff_danglelinks1.h5
 DANGLE_LINK_FILE2=h5diff_danglelinks2.h5
 GRP_RECURSE_FILE1=h5diff_grp_recurse1.h5
 GRP_RECURSE_FILE2=h5diff_grp_recurse2.h5
+# same structure, same obj name with different value
+EXCLUDE_FILE1_1=h5diff_exclude1-1.h5
+EXCLUDE_FILE1_2=h5diff_exclude1-2.h5
+# different structure and obj names
+EXCLUDE_FILE2_1=h5diff_exclude2-1.h5
+EXCLUDE_FILE2_2=h5diff_exclude2-2.h5
 
 TESTNAME=h5diff
 EXIT_SUCCESS=0
@@ -727,6 +733,25 @@ TOOLTEST h5diff_512.txt -v --follow-symlinks $GRP_RECURSE_FILE1 $GRP_RECURSE_FIL
 TOOLTEST h5diff_513.txt -v $GRP_RECURSE_FILE1 $GRP_RECURSE_FILE2 /slink_grp10 /slink_grp11
 TOOLTEST h5diff_514.txt -v --follow-symlinks $GRP_RECURSE_FILE1 $GRP_RECURSE_FILE2 /slink_grp10 /slink_grp11
 
+# ##############################################################################
+# # Exclude objects (--exclude-path)
+# ##############################################################################
+#
+# Same structure, same names and different value.
+#
+# Exclude the object with different value. Expect return - same
+TOOLTEST h5diff_480.txt -v --exclude-path /group1/dset3 $EXCLUDE_FILE1_1 $EXCLUDE_FILE1_2
+# Verify different by not excluding. Expect return - diff
+TOOLTEST h5diff_481.txt -v $EXCLUDE_FILE1_1 $EXCLUDE_FILE1_2
+
+#
+# Different structure, different names. 
+#
+# Exclude all the different objects. Expect return - same
+TOOLTEST h5diff_482.txt -v --exclude-path "/group1" --exclude-path "/dset1" $EXCLUDE_FILE2_1 $EXCLUDE_FILE2_2
+# Exclude only some different objects. Expect return - diff
+TOOLTEST h5diff_483.txt -v --exclude-path "/group1" $EXCLUDE_FILE2_1 $EXCLUDE_FILE2_2
+
 
 
 # ##############################################################################
diff --git a/tools/lib/h5diff.c b/tools/lib/h5diff.c
index 2734bef..d462b45 100644
--- a/tools/lib/h5diff.c
+++ b/tools/lib/h5diff.c
@@ -224,6 +224,99 @@ out:
 }
 
 /*-------------------------------------------------------------------------
+ * Function: is_exclude_path
+ *
+ * Purpose: check if 'paths' are part of exclude path list
+ *
+ * Return:  
+ *   1 - excluded path
+ *   0 - not excluded path
+ * 
+ * Programmer: Jonathan Kim
+ * Date: Aug 23, 2010
+ *------------------------------------------------------------------------*/
+static int is_exclude_path (trav_path_t * paths, diff_opt_t *options)
+{
+    struct exclude_path_list * exclude_path_ptr;
+    int ret_cmp;
+    int ret = 0;
+    int len_grp;
+
+    /* check if exclude path option is given */
+    if (!options->exclude_path)
+        goto out;
+
+    /* assign to local exclude list pointer */
+    exclude_path_ptr = options->exclude;
+
+    /* search objects in exclude list */
+    while (NULL != exclude_path_ptr)
+    {
+        /* if given object is group, exclude its members as well */
+        if (exclude_path_ptr->obj_type == H5TRAV_TYPE_GROUP)
+        {
+            ret_cmp = HDstrncmp(exclude_path_ptr->obj_path, paths->path,
+                                strlen(exclude_path_ptr->obj_path));
+            if (ret_cmp == 0)
+            {
+                /* check if given path belong to an excluding group, if so 
+                 * exclude it as well.
+                 * This verifies if “/grp1/dset1” is only under “/grp1”, but
+                 * not under “/grp1xxx/” group.  
+                 */ 
+                len_grp = HDstrlen(exclude_path_ptr->obj_path);
+                if (paths->path[len_grp] == '/')
+                {
+                    /* belong to excluded group! */
+                    ret = 1;
+                    break;  /* while */
+                }
+            }
+        }
+        /* exclude target is not group, just exclude the object */
+        else  
+        {
+            ret_cmp = HDstrcmp(exclude_path_ptr->obj_path, paths->path);
+            if (ret_cmp == 0)
+            {
+                /* excluded non-group object */
+                ret = 1;
+                /* assign type as scan progress, which is sufficient to 
+                 * determine type for excluding groups from the above if. */
+                exclude_path_ptr->obj_type = paths->type;
+                break; /* while */
+            }
+        }
+        exclude_path_ptr = exclude_path_ptr->next;
+    }
+
+out:
+    return  ret;
+}
+
+
+/*-------------------------------------------------------------------------
+ * Function: free_exclude_path_list
+ *
+ * Purpose: free exclud object list from diff options
+ *
+ * Programmer: Jonathan Kim
+ * Date: Aug 23, 2010
+ *------------------------------------------------------------------------*/
+static void free_exclude_path_list(diff_opt_t *options)
+{
+    struct exclude_path_list * curr = options->exclude;
+    struct exclude_path_list * next;
+
+    while (NULL != curr)
+    {
+        next = curr->next;
+        HDfree(curr);
+        curr = next;
+    }
+}
+
+/*-------------------------------------------------------------------------
  * Function: build_match_list
  *
  * Purpose: get list of matching path_name from info1 and info2
@@ -283,25 +376,33 @@ static void build_match_list (const char *objname1, trav_info_t *info1, const ch
         cmp = HDstrcmp(path1_lp, path2_lp);
 
         if(cmp == 0) {
-            infile[0] = 1;
-            infile[1] = 1;
-            trav_table_addflags(infile, path1_lp, info1->paths[curr1].type, table);
-
+            if(!is_exclude_path(&(info1->paths[curr1]), options))
+            {
+                infile[0] = 1;
+                infile[1] = 1;
+                trav_table_addflags(infile, path1_lp, info1->paths[curr1].type, table);
+            }
             curr1++;
             curr2++;
         } /* end if */
         else if(cmp < 0)
         {
-            infile[0] = 1;
-            infile[1] = 0;
-            trav_table_addflags(infile, path1_lp, info1->paths[curr1].type, table);
+            if(!is_exclude_path(&(info1->paths[curr1]), options))
+            {
+                infile[0] = 1;
+                infile[1] = 0;
+                trav_table_addflags(infile, path1_lp, info1->paths[curr1].type, table);
+            }
             curr1++;
         } /* end else-if */
         else
         {
-            infile[0] = 0;
-            infile[1] = 1;
-            trav_table_addflags(infile, path2_lp, info2->paths[curr2].type, table);
+            if (!is_exclude_path(&(info2->paths[curr2]), options))
+            {
+                infile[0] = 0;
+                infile[1] = 1;
+                trav_table_addflags(infile, path2_lp, info2->paths[curr2].type, table);
+            }
             curr2++;
         } /* end else */
     } /* end while */
@@ -311,8 +412,11 @@ static void build_match_list (const char *objname1, trav_info_t *info1, const ch
     infile[1] = 0;
     while(curr1 < info1->nused)
     {
-        path1_lp = (info1->paths[curr1].path) + path1_offset;
-        trav_table_addflags(infile, path1_lp, info1->paths[curr1].type, table);
+        if(!is_exclude_path(&(info1->paths[curr1]), options))
+        {
+            path1_lp = (info1->paths[curr1].path) + path1_offset;
+            trav_table_addflags(infile, path1_lp, info1->paths[curr1].type, table);
+        }
         curr1++;
     } /* end while */
 
@@ -321,11 +425,15 @@ static void build_match_list (const char *objname1, trav_info_t *info1, const ch
     infile[1] = 1;
     while(curr2 < info2->nused)
     {
-        path2_lp = (info2->paths[curr2].path) + path2_offset;
-        trav_table_addflags(infile, path2_lp, info2->paths[curr2].type, table);
+        if (!is_exclude_path(&(info2->paths[curr2]), options))
+        {
+            path2_lp = (info2->paths[curr2].path) + path2_offset;
+            trav_table_addflags(infile, path2_lp, info2->paths[curr2].type, table);
+        } 
         curr2++;
     } /* end while */
 
+    free_exclude_path_list (options);
    /*------------------------------------------------------
     * print the list
     */
@@ -968,10 +1076,14 @@ hsize_t diff_match(hid_t file1_id, const char *grp1, trav_info_t *info1,
     *-------------------------------------------------------------------------
     */     
        
-    /* number of different objects */
-    if ( info1->nused != info2->nused )
+    /* not valid compare nused when --exclude-path option is used */
+    if (!options->exclude_path)
     {
-        options->contents = 0;
+        /* number of different objects */
+        if ( info1->nused != info2->nused )
+        {
+            options->contents = 0;
+        }
     }
     
     /* objects in one file and not the other */
@@ -980,6 +1092,7 @@ hsize_t diff_match(hid_t file1_id, const char *grp1, trav_info_t *info1,
         if( table->objs[i].flags[0] != table->objs[i].flags[1] )
         {
             options->contents = 0;
+            break;
         }
     }
 
diff --git a/tools/lib/h5diff.h b/tools/lib/h5diff.h
index 916197d..c89b9d3 100644
--- a/tools/lib/h5diff.h
+++ b/tools/lib/h5diff.h
@@ -25,6 +25,12 @@
  * command line options
  *-------------------------------------------------------------------------
  */
+/* linked list to keep exclude path list */
+struct exclude_path_list {
+    char  *obj_path;
+    h5trav_type_t obj_type;
+    struct exclude_path_list * next;
+};
 
 typedef struct {
     int      m_quiet;               /* quiet mide: no output at all */
@@ -45,6 +51,8 @@ typedef struct {
     int      contents;              /* equal contents */
     int      do_nans;               /* consider Nans while diffing floats */
     int      m_list_not_cmp;        /* list not comparable messages */
+    int      exclude_path;          /* exclude path to an object */
+    struct   exclude_path_list * exclude; /* keep exclude path list */
 } diff_opt_t;