Initial support for low level ECMA-119 tree.

This only adds the tree creation functions, no sorting and name mangling 
yet. Only plain ECMA-119 supported for now, nor RR, relaxed 
restrictions, etc..

This also adds a little test program.

demo/ecma119_tree.c

@@ -0,0 +1,111 @@
+/*
+ * Little program that imports a directory to iso image, generates the
+ * ecma119 low level tree and prints it.
+ * Note that this is not an API example, but a little program for test
+ * purposes.
+ */
+
+#include "libisofs.h"
+#include "ecma119.h"
+#include "ecma119_tree.h"
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+static void
+print_permissions(mode_t mode)
+{
+	char perm[10];
+	
+	//TODO suid, sticky...
+	
+	perm[9] = '\0';
+	perm[8] = mode & S_IXOTH ? 'x' : '-';
+	perm[7] = mode & S_IWOTH ? 'w' : '-';
+	perm[6] = mode & S_IROTH ? 'r' : '-';
+	perm[5] = mode & S_IXGRP ? 'x' : '-';
+	perm[4] = mode & S_IWGRP ? 'w' : '-';
+	perm[3] = mode & S_IRGRP ? 'r' : '-';
+	perm[2] = mode & S_IXUSR ? 'x' : '-';
+	perm[1] = mode & S_IWUSR ? 'w' : '-';
+	perm[0] = mode & S_IRUSR ? 'r' : '-';
+	printf("[%s]",perm);
+}
+
+static void 
+print_dir(Ecma119Node *dir, int level) 
+{
+	int i;
+	char sp[level * 2 + 1];
+	
+	for (i = 0; i < level * 2; i += 2) {
+		sp[i] = '|';
+		sp[i+1] = ' ';
+	}
+	
+	sp[level * 2-1] = '-';
+	sp[level * 2] = '\0';
+	
+    for (i = 0; i < dir->info.dir.nchildren; i++) {
+		Ecma119Node *child = dir->info.dir.children[i];
+        
+		if (child->type == ECMA119_DIR) {
+			printf("%s+[D] ", sp);
+			print_permissions(iso_node_get_permissions(child->node));
+			printf(" %s\n", child->iso_name);
+			print_dir(child, level+1);
+		} else if (child->type == ECMA119_FILE) {
+			printf("%s-[F] ", sp);
+            print_permissions(iso_node_get_permissions(child->node));
+            printf(" %s {%p}\n", child->iso_name, (void*)child->info.file);
+		} else {
+			printf("%s-[????] ", sp);
+		} 
+	}
+}
+
+int main(int argc, char **argv)
+{
+	int result;
+    IsoImage *image;
+    Ecma119Image *ecma119;
+    Ecma119Node *tree;
+	
+	if (argc != 2) {
+		printf ("You need to specify a valid path\n");
+		return 1;
+	}
+	
+    result = iso_image_new("volume_id", &image);
+    if (result < 0) {
+        printf ("Error creating image\n");
+        return 1;
+    }
+	iso_image_set_msgs_severities(image, "NEVER", "ALL", "");
+	
+    result = iso_tree_add_dir_rec(image, iso_image_get_root(image), argv[1]);
+    if (result < 0) {
+        printf ("Error adding directory %d\n", result);
+        return 1;
+    }
+    
+    ecma119 = calloc(1, sizeof(Ecma119Image));
+    ecma119->iso_level = 1;
+	
+    /* create low level tree */
+    result = ecma119_tree_create(ecma119, (IsoNode*)iso_image_get_root(image), &tree);
+    if (result < 0) {
+        printf ("Error creating ecma-119 tree: %d\n", result);
+        return 1;
+    }
+    
+    printf("================= ECMA-119 TREE =================\n");
+	print_dir(tree, 0);
+	printf("\n\n");
+	
+    ecma119_node_free(tree);
+    iso_image_unref(image);
+	return 0;
+}

demo/lsl.c

@@ -59,6 +59,7 @@ print_file_src(IsoFileSource *file)
     file->lstat(file, &info);
     print_type(info.st_mode);
     print_permissions(info.st_mode);
+    printf(" {%ld,%ld} ", (long)info.st_dev, (long)info.st_ino);
     name = file->get_name(file);
     printf(" %s", name);
     free(name);

demo/tree.c

@@ -1,6 +1,5 @@
 /*
- * Little program that reads an existing ISO image and prints its
- * contents to stdout.
+ * Little program that import a directory and prints the resulting iso tree.
  */
 
 #include "libisofs.h"