15 files changed, 760 insertions, 0 deletions

diff --git a/libcnary/CMakeLists.txt b/libcnary/CMakeLists.txt
new file mode 100644
index 0000000..bbbe8ce
--- /dev/null
+++ b/libcnary/CMakeLists.txt
@@ -0,0 +1,16 @@
+cmake_minimum_required(VERSION 2.6)
+
+SET(libcnary_SRC
+	iterator.c
+	list.c
+	node.c
+	node_iterator.c
+	node_list.c )
+
+INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR}/include)
+
+SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC")
+ADD_LIBRARY(libcnary STATIC ${libcnary_SRC})
+
+SET_TARGET_PROPERTIES(libcnary PROPERTIES OUTPUT_NAME cnary)
+
diff --git a/libcnary/Makefile b/libcnary/Makefile
new file mode 100644
index 0000000..bdd165d
--- /dev/null
+++ b/libcnary/Makefile
@@ -0,0 +1,21 @@
+TARGET = cnary
+LIBRARY = libcnary.a
+OBJECTS = cnary.o libcnary.a
+LIBRARY_OBJECTS = node.o list.o iterator.o node_list.o node_iterator.o
+CFLAGS=-g -I./include -I/opt/local/include -mmacosx-version-min=10.5 -arch i386 -isysroot /Developer/SDKs/MacOSX10.5.sdk
+LDFLAGS=-L/opt/local/lib -framework CoreFoundation -mmacosx-version-min=10.5 -arch i386 -isysroot /Developer/SDKs/MacOSX10.5.sdk -Wl,-no_compact_linkedit
+
+
+%.o: %.c
+	$(CC) -o $(@) -c $(^) $(CFLAGS)
+
+$(LIBRARY): $(LIBRARY_OBJECTS)
+	$(AR) rs $(@) $(^)
+	
+$(TARGET): $(OBJECTS)
+	$(CC) -o $(@) $(^) $(CFLAGS) $(LDFLAGS)
+
+all: $(TARGET)
+
+clean:
+	rm -rf $(TARGET) $(LIBRARY) $(OBJECTS) $(LIBRARY_OBJECTS)
\ No newline at end of file
diff --git a/libcnary/README b/libcnary/README
new file mode 100644
index 0000000..5472b4e
--- /dev/null
+++ b/libcnary/README
@@ -0,0 +1,5 @@
+Project Name:
+	libcnary
+
+Project Description:
+	A small N-ary (Tree) library written in C.
\ No newline at end of file
diff --git a/libcnary/cnary.c b/libcnary/cnary.c
new file mode 100644
index 0000000..3e55fce
--- /dev/null
+++ b/libcnary/cnary.c
@@ -0,0 +1,30 @@
+/*
+ * cnary.c
+ *
+ *  Created on: Mar 9, 2011
+ *      Author: posixninja
+ */
+
+#include <stdio.h>
+
+#include "node.h"
+
+int main(int argc, char* argv[]) {
+	puts("Creating root node");
+	node_t* root = node_create(NULL, NULL);
+
+	puts("Creating child 1 node");
+	node_t* one = node_create(root, NULL);
+	puts("Creating child 2 node");
+	node_t* two = node_create(root, NULL);
+
+	puts("Creating child 3 node");
+	node_t* three = node_create(one, NULL);
+
+	puts("Debugging root node");
+	node_debug(root);
+
+	puts("Destroying root node");
+	node_destroy(root);
+	return 0;
+}
diff --git a/libcnary/include/iterator.h b/libcnary/include/iterator.h
new file mode 100644
index 0000000..debc1c5
--- /dev/null
+++ b/libcnary/include/iterator.h
@@ -0,0 +1,33 @@
+/*
+ * iterator.h
+ *
+ *  Created on: Mar 8, 2011
+ *      Author: posixninja
+ */
+
+#ifndef ITERATOR_H_
+#define ITERATOR_H_
+
+struct list_t;
+struct object_t;
+
+typedef struct iterator_t {
+	struct object_t*(*next)(struct iterator_t* iterator);
+	int(*bind)(struct iterator_t* iterator, struct list_t* list);
+
+	unsigned int count;
+	unsigned int position;
+
+	struct list_t* list;
+	struct object_t* end;
+	struct object_t* begin;
+	struct object_t* value;
+} iterator_t;
+
+void iterator_destroy(struct iterator_t* iterator);
+struct iterator_t* iterator_create(struct list_t* list);
+
+struct object_t* iterator_next(struct iterator_t* iterator);
+int iterator_bind(struct iterator_t* iterator, struct list_t* list);
+
+#endif /* ITERATOR_H_ */
diff --git a/libcnary/include/list.h b/libcnary/include/list.h
new file mode 100644
index 0000000..237aba0
--- /dev/null
+++ b/libcnary/include/list.h
@@ -0,0 +1,24 @@
+/*
+ * list.h
+ *
+ *  Created on: Mar 8, 2011
+ *      Author: posixninja
+ */
+
+#ifndef LIST_H_
+#define LIST_H_
+
+#include "object.h"
+
+typedef struct list_t {
+	void* next;
+	void* prev;
+} list_t;
+
+void list_init(struct list_t* list);
+void list_destroy(struct list_t* list);
+
+int list_add(struct list_t* list, struct object_t* object);
+int list_remove(struct list_t* list, struct object_t* object);
+
+#endif /* LIST_H_ */
diff --git a/libcnary/include/node.h b/libcnary/include/node.h
new file mode 100644
index 0000000..35f6333
--- /dev/null
+++ b/libcnary/include/node.h
@@ -0,0 +1,59 @@
+/*
+ * node.h
+ *
+ *  Created on: Mar 7, 2011
+ *      Author: posixninja
+ */
+
+#ifndef NODE_H_
+#define NODE_H_
+
+#include "object.h"
+
+#define NODE_TYPE 1;
+
+struct node_list_t;
+
+// This class implements the abstract iterator class
+typedef struct node_t {
+	// Super class
+	struct node_t* next;
+	struct node_t* prev;
+	unsigned int count;
+
+	// Local Properties
+	int isRoot;
+	int isLeaf;
+
+	// Local Members
+	void *data;
+	unsigned int depth;
+	struct node_t* parent;
+	struct node_list_t* children;
+
+	// Virtual Functions
+	int(*attach)(struct node_t* parent, struct node_t* child);
+	int(*detach)(struct node_t* parent, struct node_t* child);
+
+} node_t;
+
+void node_destroy(struct node_t* node);
+struct node_t* node_create(struct node_t* parent, void* data);
+
+int node_attach(struct node_t* parent, struct node_t* child);
+int node_detach(struct node_t* parent, struct node_t* child);
+int node_insert(struct node_t* parent, unsigned int index, struct node_t* child);
+
+unsigned int node_n_children(struct node_t* node);
+node_t* node_nth_child(struct node_t* node, unsigned int n);
+node_t* node_first_child(struct node_t* node);
+node_t* node_prev_sibling(struct node_t* node);
+node_t* node_next_sibling(struct node_t* node);
+int node_child_position(struct node_t* parent, node_t* child);
+
+typedef void* (*copy_func_t)(const void *src);
+node_t* node_copy_deep(node_t* node, copy_func_t copy_func);
+
+void node_debug(struct node_t* node);
+
+#endif /* NODE_H_ */
diff --git a/libcnary/include/node_iterator.h b/libcnary/include/node_iterator.h
new file mode 100644
index 0000000..8f39ceb
--- /dev/null
+++ b/libcnary/include/node_iterator.h
@@ -0,0 +1,39 @@
+/*
+ * node_iterator.h
+ *
+ *  Created on: Mar 8, 2011
+ *      Author: posixninja
+ */
+
+#ifndef NODE_ITERATOR_H_
+#define NODE_ITERATOR_H_
+
+#include "iterator.h"
+#include "node_list.h"
+
+// This class implements the abstract iterator class
+typedef struct node_iterator_t {
+	// Super class
+	struct iterator_t super;
+
+	// Local members
+	struct node_t*(*next)(struct node_iterator_t* iterator);
+	int(*bind)(struct node_iterator_t* iterator, struct node_list_t* list);
+
+	unsigned int count;
+	unsigned int position;
+
+	struct node_list_t* list;
+	struct node_t* end;
+	struct node_t* begin;
+	struct node_t* value;
+
+} node_iterator_t;
+
+void node_iterator_destroy(node_iterator_t* iterator);
+node_iterator_t* node_iterator_create(node_list_t* list);
+
+struct node_t* node_iterator_next(struct node_iterator_t* iterator);
+int node_iterator_bind(struct node_iterator_t* iterator, struct node_list_t* list);
+
+#endif /* NODE_ITERATOR_H_ */
diff --git a/libcnary/include/node_list.h b/libcnary/include/node_list.h
new file mode 100644
index 0000000..bb9fcae
--- /dev/null
+++ b/libcnary/include/node_list.h
@@ -0,0 +1,31 @@
+/*
+ * node_list.h
+ *
+ *  Created on: Mar 8, 2011
+ *      Author: posixninja
+ */
+
+#ifndef NODE_LIST_H_
+#define NODE_LIST_H_
+
+struct node_t;
+
+// This class implements the list_t abstract class
+typedef struct node_list_t {
+	// list_t members
+	struct node_t* begin;
+	struct node_t* end;
+
+	// node_list_t members
+	unsigned int count;
+
+} node_list_t;
+
+void node_list_destroy(struct node_list_t* list);
+struct node_list_t* node_list_create(struct node_t* node);
+
+int node_list_add(node_list_t* list, node_t* node);
+int node_list_insert(node_list_t* list, unsigned int index, node_t* node);
+int node_list_remove(node_list_t* list, node_t* node);
+
+#endif /* NODE_LIST_H_ */
diff --git a/libcnary/include/object.h b/libcnary/include/object.h
new file mode 100644
index 0000000..adf1891
--- /dev/null
+++ b/libcnary/include/object.h
@@ -0,0 +1,25 @@
+/*
+ * object.h
+ *
+ *  Created on: Mar 8, 2011
+ *      Author: posixninja
+ */
+
+#ifndef OBJECT_H_
+#define OBJECT_H_
+
+#ifndef TRUE
+#define TRUE 1
+#endif
+
+#ifndef FALSE
+#define FALSE 0
+#endif
+
+typedef struct object_t {
+	void* value;
+	unsigned int type;
+	unsigned int size;
+} object_t;
+
+#endif /* OBJECT_H_ */
diff --git a/libcnary/iterator.c b/libcnary/iterator.c
new file mode 100644
index 0000000..f4897f9
--- /dev/null
+++ b/libcnary/iterator.c
@@ -0,0 +1,45 @@
+/*
+ * iterator.c
+ *
+ *  Created on: Mar 8, 2011
+ *      Author: posixninja
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "list.h"
+#include "object.h"
+#include "iterator.h"
+
+void iterator_destroy(iterator_t* iterator) {
+	if(iterator) {
+		free(iterator);
+	}
+}
+
+iterator_t* iterator_create(list_t* list) {
+	iterator_t* iterator = (iterator_t*) malloc(sizeof(iterator_t));
+	if(iterator == NULL) {
+		return NULL;
+	}
+	memset(iterator, '\0', sizeof(iterator_t));
+
+	if(list != NULL) {
+		// Create and bind to list
+
+	} else {
+		// Empty Iterator
+	}
+
+	return iterator;
+}
+
+object_t* iterator_next(iterator_t* iterator) {
+	return NULL;
+}
+
+int iterator_bind(iterator_t* iterator, list_t* list) {
+	return -1;
+}
diff --git a/libcnary/list.c b/libcnary/list.c
new file mode 100644
index 0000000..b98cde8
--- /dev/null
+++ b/libcnary/list.c
@@ -0,0 +1,31 @@
+/*
+ * list.c
+ *
+ *  Created on: Mar 8, 2011
+ *      Author: posixninja
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "list.h"
+
+void list_init(list_t* list) {
+	list->next = NULL;
+	list->prev = list;
+}
+
+
+void list_destroy(list_t* list) {
+	if(list) {
+		free(list);
+	}
+}
+
+int list_add(list_t* list, object_t* object) {
+	return -1;
+}
+
+int list_remove(list_t* list, object_t* object) {
+	return -1;
+}
diff --git a/libcnary/node.c b/libcnary/node.c
new file mode 100644
index 0000000..956ba2f
--- /dev/null
+++ b/libcnary/node.c
@@ -0,0 +1,207 @@
+/*
+ * node.c
+ *
+ *  Created on: Mar 7, 2011
+ *      Author: posixninja
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "node.h"
+#include "node_list.h"
+#include "node_iterator.h"
+
+void node_destroy(node_t* node) {
+	if(!node) return;
+
+	if (node->children && node->children->count > 0) {
+		node_t* ch;
+		while ((ch = node->children->begin)) {
+			node_list_remove(node->children, ch);
+			node_destroy(ch);
+		}
+	}
+	node_list_destroy(node->children);
+	node->children = NULL;
+
+	free(node);
+}
+
+node_t* node_create(node_t* parent, void* data) {
+	int error = 0;
+
+	node_t* node = (node_t*) malloc(sizeof(node_t));
+	if(node == NULL) {
+		return NULL;
+	}
+	memset(node, '\0', sizeof(node_t));
+
+	node->data = data;
+	node->depth = 0;
+	node->next = NULL;
+	node->prev = NULL;
+	node->count = 0;
+	node->isLeaf = TRUE;
+	node->isRoot = TRUE;
+	node->parent = NULL;
+	node->children = node_list_create(node);
+
+	// Pass NULL to create a root node
+	if(parent != NULL) {
+		// This is a child node so attach it to it's parent
+		error = node_attach(parent, node);
+		if(error < 0) {
+			// Unable to attach nodes
+			printf("ERROR: %d \"Unable to attach nodes\"\n", error);
+			node_destroy(node);
+			return NULL;
+		}
+	}
+
+	return node;
+}
+
+int node_attach(node_t* parent, node_t* child) {
+	if (!parent || !child) return -1;
+	child->isLeaf = TRUE;
+	child->isRoot = FALSE;
+	child->parent = parent;
+	child->depth = parent->depth + 1;
+	if(parent->isLeaf == TRUE) {
+		parent->isLeaf = FALSE;
+	}
+	int res = node_list_add(parent->children, child);
+	if (res == 0) {
+		parent->count++;
+	}
+	return res;
+}
+
+int node_detach(node_t* parent, node_t* child) {
+	if (!parent || !child) return 0;
+	if (node_list_remove(parent->children, child) == 0) {
+		parent->count--;
+	}
+	return 0;
+}
+
+int node_insert(node_t* parent, unsigned int index, node_t* child)
+{
+	if (!parent || !child) return;
+	child->isLeaf = TRUE;
+	child->isRoot = FALSE;
+	child->parent = parent;
+	child->depth = parent->depth + 1;
+	if(parent->isLeaf == TRUE) {
+		parent->isLeaf = FALSE;
+	}
+	int res = node_list_insert(parent->children, index, child);
+	if (res == 0) {
+		parent->count++;
+	}
+	return res;
+}
+
+void node_debug(node_t* node) {
+	int i = 0;
+	node_t* current = NULL;
+	node_iterator_t* iter = NULL;
+	for(i = 0; i < node->depth; i++) {
+		printf("\t");
+	}
+	if(node->isRoot) {
+		printf("ROOT\n");
+	}
+
+	if(node->isLeaf && !node->isRoot) {
+		printf("LEAF\n");
+
+	} else {
+		if(!node->isRoot) {
+			printf("NODE\n");
+		}
+		iter = node_iterator_create(node->children);
+		for(current = iter->begin; current != NULL; current = iter->next(iter)) {
+			node_debug(current);
+		}
+	}
+
+}
+
+unsigned int node_n_children(struct node_t* node)
+{
+	if (!node) return 0;
+	return node->count;
+}
+
+node_t* node_nth_child(struct node_t* node, unsigned int n)
+{
+	if (!node || !node->children || !node->children->begin) return NULL;
+	int index = 0;
+	int found = 0;
+	node_t *ch;
+	for (ch = node_first_child(node); ch; ch = node_next_sibling(ch)) {
+		if (index++ == n) {
+			found = 1;
+			break;
+		}
+	}
+	if (!found) {
+		return NULL;
+	}
+	return ch;
+}
+
+node_t* node_first_child(struct node_t* node)
+{
+	if (!node || !node->children) return NULL;
+	return node->children->begin;
+}
+
+node_t* node_prev_sibling(struct node_t* node)
+{
+	if (!node) return NULL;
+	return node->prev;
+}
+
+node_t* node_next_sibling(struct node_t* node)
+{
+	if (!node) return NULL;
+	return node->next;
+}
+
+int node_child_position(struct node_t* parent, node_t* child)
+{
+	if (!parent || !parent->children || !parent->children->begin || !child) return -1;
+	int index = 0;
+	int found = 0;
+	node_t *ch;
+	for (ch = node_first_child(parent); ch; ch = node_next_sibling(ch)) {
+		if (ch == child) {
+			found = 1;
+			break;
+		}
+		index++;
+	}
+	if (!found) {
+		return -1;
+	}
+	return index;
+}
+
+node_t* node_copy_deep(node_t* node, copy_func_t copy_func)
+{
+	if (!node) return NULL;
+	void *data;
+	if (copy_func) {
+		data = copy_func(node->data);
+	}
+	node_t* copy = node_create(NULL, data);
+	node_t* ch;
+	for (ch = node_first_child(node); ch; ch = node_next_sibling(ch)) {
+		node_t* cc = node_copy_deep(ch, copy_func);
+		node_attach(copy, cc);
+	}
+	return copy;
+}
diff --git a/libcnary/node_iterator.c b/libcnary/node_iterator.c
new file mode 100644
index 0000000..eef3a4f
--- /dev/null
+++ b/libcnary/node_iterator.c
@@ -0,0 +1,64 @@
+/*
+ * node_iterator.c
+ *
+ *  Created on: Mar 8, 2011
+ *      Author: posixninja
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "node.h"
+#include "node_list.h"
+#include "node_iterator.h"
+
+void node_iterator_destroy(node_iterator_t* iterator) {
+	if(iterator) {
+		free(iterator);
+	}
+}
+
+node_iterator_t* node_iterator_create(node_list_t* list) {
+	node_iterator_t* iterator = (node_iterator_t*) malloc(sizeof(node_iterator_t));
+	if(iterator == NULL) {
+		return NULL;
+	}
+	memset(iterator, '\0', sizeof(node_iterator_t));
+
+	iterator->count = 0;
+	iterator->position = 0;
+
+	iterator->end = NULL;
+	iterator->begin = NULL;
+	iterator->value = list->begin;
+
+	iterator->list = NULL;
+	iterator->next = node_iterator_next;
+	iterator->bind = node_iterator_bind;
+
+
+	if(list != NULL) {
+		iterator->bind(iterator, list);
+	}
+
+	return iterator;
+}
+
+node_t* node_iterator_next(node_iterator_t* iterator) {
+	node_t* node = iterator->value;
+	if (node) {
+		iterator->value = node->next;
+	}
+	iterator->position++;
+	return node;
+}
+
+int node_iterator_bind(node_iterator_t* iterator, node_list_t* list) {
+	iterator->position = 0;
+	iterator->end = list->end;
+	iterator->count = list->count;
+	iterator->begin = list->begin;
+	iterator->value = list->begin;
+	return 0;
+}
diff --git a/libcnary/node_list.c b/libcnary/node_list.c
new file mode 100644
index 0000000..8464af2
--- /dev/null
+++ b/libcnary/node_list.c
@@ -0,0 +1,130 @@
+/*
+ * node_list.c
+ *
+ *  Created on: Mar 8, 2011
+ *      Author: posixninja
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "list.h"
+#include "node.h"
+#include "node_list.h"
+
+void node_list_destroy(node_list_t* list) {
+	if(list != NULL) {
+		list_destroy((list_t*) list);
+	}
+}
+
+node_list_t* node_list_create(node_t* node) {
+	node_list_t* list = (node_list_t*) malloc(sizeof(node_list_t));
+	if(list == NULL) {
+		return NULL;
+	}
+	memset(list, '\0', sizeof(node_list_t));
+
+	// Initialize structure
+	list_init((list_t*) list);
+	list->count = 0;
+	return list;
+}
+
+int node_list_add(node_list_t* list, node_t* node) {
+	if (!list || !node) return -1;
+
+	// Find the last element in the list
+	node_t* last = list->end;
+
+	// Setup our new node as the new last element
+	node->next = NULL;
+	node->prev = last;
+
+	// Set the next element of our old "last" element
+	last->next = node;
+
+	// Set the lists prev to the new last element
+	list->end = node;
+
+	// Increment our node count for this list
+	list->count++;
+	return 0;
+}
+
+int node_list_insert(node_list_t* list, unsigned int index, node_t* node) {
+	if (!list || !node) return -1;
+	if (index >= list->count) {
+		return node_list_add(list, node);
+	}
+
+	// Get the first element in the list
+	node_t* cur = list->begin;
+
+	unsigned int pos = 0;
+	node_t* prev = NULL;
+
+	if (index > 0) {
+		while (pos < index) {
+			prev = cur;
+			cur = cur->next;
+			pos++;
+		}
+	}
+
+	if (prev) {
+		// Set previous node
+		node->prev = prev;
+		// Set next node of our new node to next node of the previous node
+		node->next = prev->next;
+		// Set next node of previous node to our new node
+		prev->next = node;
+	} else {
+		node->prev = NULL;
+		// get old first element in list
+		node->next = list->begin;
+		// set new node as first element in list
+		list->begin = node;
+	}
+
+	if (node->next == NULL) {
+		// Set the lists prev to the new last element
+		list->end = node;
+	} else {
+		// set prev of the new next element to our node
+		node->next->prev = node;
+	}
+
+	// Increment our node count for this list
+	list->count++;
+	return 0;
+}
+
+int node_list_remove(node_list_t* list, node_t* node) {
+	if (!list || !node) return -1;
+	if (list->count == 0) return -1;
+
+	node_t* n;
+	for (n = list->begin; n; n = n->next) {
+		if (node == n) {
+			node_t* newnode = node->next;
+			if (node->prev) {
+				node->prev->next = newnode;
+				if (newnode) {
+					newnode->prev = node->prev;
+				}
+			} else {
+				// we just removed the first element
+				if (newnode) {
+					newnode->prev = NULL;
+				}
+				list->begin = newnode;
+			}
+			list->count--;
+			return 0;
+		}
+	}	
+	return -1;
+}
+