[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

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;