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use c_signatures::*;
use libc;
use libc::{c_int, c_void};
use std::ffi::{CStr, CString};
use std::hash::{Hash, Hasher};
use std::ptr;
use std::str;
use std::collections::{HashMap, HashSet};
use std::mem;
use global::*;
#[derive(Clone)]
pub struct Node {
pub node_ptr: *mut c_void,
}
impl Hash for Node {
fn hash<H: Hasher>(&self, state: &mut H) {
self.node_ptr.hash(state);
}
}
impl PartialEq for Node {
fn eq(&self, other: &Node) -> bool {
self.node_ptr == other.node_ptr
}
}
impl Eq for Node {}
impl Drop for Node {
fn drop(&mut self) {
}
}
#[derive(Debug)]
pub struct Document {
pub doc_ptr: *mut c_void,
}
impl Drop for Document {
fn drop(&mut self) {
unsafe {
xmlFreeDoc(self.doc_ptr);
}
_libxml_global_drop();
}
}
impl Document {
pub fn new() -> Result<Self, ()> {
_libxml_global_init();
unsafe {
let c_version = CString::new("1.0").unwrap();
let libxml_doc = xmlNewDoc(c_version.as_ptr());
if libxml_doc.is_null() {
Err(())
} else {
Ok(Document {
doc_ptr: libxml_doc,
})
}
}
}
pub fn new_ptr(doc_ptr: *mut c_void) -> Self {
_libxml_global_init();
Document { doc_ptr: doc_ptr }
}
pub fn save_file(&self, filename: &str) -> Result<c_int, ()> {
let c_filename = CString::new(filename).unwrap();
unsafe {
let retval = xmlSaveFile(c_filename.as_ptr(), self.doc_ptr);
if retval < 0 {
return Err(());
}
Ok(retval)
}
}
pub fn get_root_element(&self) -> Node {
unsafe {
let node_ptr = xmlDocGetRootElement(self.doc_ptr);
if node_ptr.is_null() {
Node {
node_ptr: self.doc_ptr,
}
} else {
Node { node_ptr: node_ptr }
}
}
}
pub fn set_root_element(&mut self, root: &Node) {
unsafe {
xmlDocSetRootElement(self.doc_ptr, root.node_ptr);
}
}
pub fn import_node(&self, node: &Node) -> Option<Node> {
let node_ptr = unsafe { xmlDocCopyNode(node.node_ptr, self.doc_ptr, 1) };
ptr_as_node_opt(node_ptr)
}
pub fn to_string(&self, format: bool) -> String {
unsafe {
let mut receiver = ptr::null_mut();
let size: c_int = 0;
let c_utf8 = CString::new("UTF-8").unwrap();
if !format {
xmlDocDumpMemoryEnc(self.doc_ptr, &mut receiver, &size, c_utf8.as_ptr(), 1);
} else {
let current_indent = getIndentTreeOutput();
setIndentTreeOutput(1);
xmlDocDumpFormatMemoryEnc(self.doc_ptr, &mut receiver, &size, c_utf8.as_ptr(), 1);
setIndentTreeOutput(current_indent);
}
let c_string = CStr::from_ptr(receiver);
let node_string = c_string.to_string_lossy().into_owned();
libc::free(receiver as *mut c_void);
node_string
}
}
pub fn node_to_string(&self, node: &Node) -> String {
unsafe {
let buf = xmlBufferCreate();
xmlNodeDump(
buf,
self.doc_ptr,
node.node_ptr,
1,
0,
);
let result_ptr = xmlBufferContent(buf);
let c_string = CStr::from_ptr(result_ptr);
let node_string = c_string.to_string_lossy().into_owned();
xmlBufferFree(buf);
node_string
}
}
pub fn create_processing_instruction(&mut self, name: &str, content: &str) -> Result<Node, ()> {
unsafe {
let c_name = CString::new(name).unwrap();
let c_content = CString::new(content).unwrap();
let node_ptr = xmlNewDocPI(self.doc_ptr, c_name.as_ptr(), c_content.as_ptr());
if node_ptr.is_null() {
Err(())
} else {
Ok(Node { node_ptr: node_ptr })
}
}
}
pub fn as_node(&self) -> Node {
Node {
node_ptr: self.doc_ptr,
}
}
}
impl Clone for Document {
fn clone(&self) -> Self {
let doc_ptr = unsafe { xmlCopyDoc(self.doc_ptr, 1) };
ptr_as_doc_opt(doc_ptr).expect("Could not clone the document!")
}
fn clone_from(&mut self, source: &Self) {
if !self.doc_ptr.is_null() {
panic!("Can only invoke clone_from on a Document struct with no pointer assigned.")
}
let doc_ptr = unsafe { xmlCopyDoc(source.doc_ptr, 1) };
if doc_ptr.is_null() {
panic!("Could not clone the Document!")
}
self.doc_ptr = doc_ptr;
}
}
fn ptr_as_node_opt(ptr: *mut c_void) -> Option<Node> {
if ptr.is_null() {
None
} else {
Some(Node { node_ptr: ptr })
}
}
fn ptr_as_doc_opt(doc_ptr: *mut c_void) -> Option<Document> {
if doc_ptr.is_null() {
None
} else {
Some(Document { doc_ptr })
}
}
#[derive(Debug, PartialEq)]
#[allow(missing_docs)]
pub enum NodeType {
ElementNode,
AttributeNode,
TextNode,
CDataSectionNode,
EntityRefNode,
EntityNode,
PiNode,
CommentNode,
DocumentNode,
DocumentTypeNode,
DocumentFragNode,
NotationNode,
HtmlDocumentNode,
DTDNode,
ElementDecl,
AttributeDecl,
EntityDecl,
NamespaceDecl,
XIncludeStart,
XIncludeEnd,
DOCBDocumentNode,
}
impl NodeType {
pub fn from_c_int(i: c_int) -> Option<NodeType> {
match i {
1 => Some(NodeType::ElementNode),
2 => Some(NodeType::AttributeNode),
3 => Some(NodeType::TextNode),
4 => Some(NodeType::CDataSectionNode),
5 => Some(NodeType::EntityRefNode),
6 => Some(NodeType::EntityNode),
7 => Some(NodeType::PiNode),
8 => Some(NodeType::CommentNode),
9 => Some(NodeType::DocumentNode),
10 => Some(NodeType::DocumentTypeNode),
11 => Some(NodeType::DocumentFragNode),
12 => Some(NodeType::NotationNode),
13 => Some(NodeType::HtmlDocumentNode),
14 => Some(NodeType::DTDNode),
15 => Some(NodeType::ElementDecl),
16 => Some(NodeType::AttributeDecl),
17 => Some(NodeType::EntityDecl),
18 => Some(NodeType::NamespaceDecl),
19 => Some(NodeType::XIncludeStart),
20 => Some(NodeType::XIncludeEnd),
21 => Some(NodeType::DOCBDocumentNode),
_ => None,
}
}
}
impl Node {
pub fn new(name: &str, ns: Option<Namespace>, doc: &Document) -> Result<Self, ()> {
let c_name = CString::new(name).unwrap();
let ns_ptr = match ns {
None => ptr::null_mut(),
Some(ns) => ns.ns_ptr,
};
unsafe {
let node = xmlNewDocNode(doc.doc_ptr, ns_ptr, c_name.as_ptr(), ptr::null());
if node.is_null() {
Err(())
} else {
Ok(Node { node_ptr: node })
}
}
}
pub fn new_text(content: &str, doc: &Document) -> Result<Self, ()> {
let c_content = CString::new(content).unwrap();
unsafe {
let node = xmlNewDocText(doc.doc_ptr, c_content.as_ptr());
if node.is_null() {
Err(())
} else {
Ok(Node { node_ptr: node })
}
}
}
pub fn mock() -> Self {
let doc = Document::new().unwrap();
Node::new("mock", None, &doc).unwrap()
}
pub fn null() -> Self {
Node {
node_ptr: ptr::null_mut(),
}
}
pub fn to_hashable(&self) -> usize {
unsafe { mem::transmute::<*mut libc::c_void, usize>(self.node_ptr) }
}
pub fn get_next_sibling(&self) -> Option<Node> {
let ptr = unsafe { xmlNextSibling(self.node_ptr) };
ptr_as_node_opt(ptr)
}
pub fn get_prev_sibling(&self) -> Option<Node> {
let ptr = unsafe { xmlPrevSibling(self.node_ptr) };
ptr_as_node_opt(ptr)
}
pub fn get_first_child(&self) -> Option<Node> {
let ptr = unsafe { xmlGetFirstChild(self.node_ptr) };
ptr_as_node_opt(ptr)
}
pub fn get_first_element_child(&self) -> Option<Node> {
match self.get_first_child() {
None => None,
Some(child) => {
let mut current_node = child;
while !current_node.is_element_node() {
if let Some(sibling) = current_node.get_next_sibling() {
current_node = sibling;
} else {
break;
}
}
if current_node.is_element_node() {
Some(current_node)
} else {
None
}
}
}
}
pub fn get_last_child(&self) -> Option<Node> {
let ptr = unsafe { xmlGetLastChild(self.node_ptr) };
ptr_as_node_opt(ptr)
}
pub fn get_child_nodes(&self) -> Vec<Node> {
let mut children = Vec::new();
if let Some(node) = self.get_first_child() {
children.push(node.clone());
let mut current_node = node;
while let Some(sibling) = current_node.get_next_sibling() {
current_node = sibling.clone();
children.push(sibling)
}
}
children
}
pub fn get_child_elements(&self) -> Vec<Node> {
self
.get_child_nodes()
.into_iter()
.filter(|n| n.get_type() == Some(NodeType::ElementNode))
.collect::<Vec<Node>>()
}
pub fn get_parent(&self) -> Option<Node> {
let ptr = unsafe { xmlGetParent(self.node_ptr) };
ptr_as_node_opt(ptr)
}
pub fn get_type(&self) -> Option<NodeType> {
NodeType::from_c_int(unsafe { xmlGetNodeType(self.node_ptr) })
}
pub fn add_prev_sibling(&self, new_sibling: &Node) -> Result<(), ()> {
unsafe {
if xmlAddPrevSibling(self.node_ptr, new_sibling.node_ptr).is_null() {
Err(())
} else {
Ok(())
}
}
}
pub fn add_next_sibling(&self, new_sibling: &Node) -> Result<(), ()> {
unsafe {
if xmlAddNextSibling(self.node_ptr, new_sibling.node_ptr).is_null() {
Err(())
} else {
Ok(())
}
}
}
pub fn is_text_node(&self) -> bool {
self.get_type() == Some(NodeType::TextNode)
}
pub fn is_element_node(&self) -> bool {
self.get_type() == Some(NodeType::ElementNode)
}
pub fn get_name(&self) -> String {
let name_ptr = unsafe { xmlNodeGetName(self.node_ptr) };
if name_ptr.is_null() {
return String::new();
}
let c_string = unsafe { CStr::from_ptr(name_ptr) };
c_string.to_string_lossy().into_owned()
}
pub fn set_name(&mut self, name: &str) {
let c_name = CString::new(name).unwrap();
unsafe { xmlNodeSetName(self.node_ptr, c_name.as_ptr()) }
}
pub fn get_content(&self) -> String {
let content_ptr = unsafe { xmlNodeGetContent(self.node_ptr) };
if content_ptr.is_null() {
return String::new();
}
let c_string = unsafe { CStr::from_ptr(content_ptr) };
let rust_utf8 = c_string.to_string_lossy().into_owned();
unsafe {
libc::free(content_ptr as *mut c_void);
}
rust_utf8
}
pub fn set_content(&mut self, content: &str) {
let c_content = CString::new(content).unwrap();
unsafe { xmlNodeSetContent(self.node_ptr, c_content.as_ptr()) }
}
pub fn get_property(&self, name: &str) -> Option<String> {
let c_name = CString::new(name).unwrap();
let value_ptr = unsafe { xmlGetProp(self.node_ptr, c_name.as_ptr()) };
if value_ptr.is_null() {
return None;
}
let c_value_string = unsafe { CStr::from_ptr(value_ptr) };
let prop_str = c_value_string.to_string_lossy().into_owned();
unsafe {
libc::free(value_ptr as *mut c_void);
}
Some(prop_str)
}
pub fn get_property_ns(&self, name: &str, ns: &str) -> Option<String> {
let c_name = CString::new(name).unwrap();
let c_ns = CString::new(ns).unwrap();
let value_ptr = unsafe { xmlGetNsProp(self.node_ptr, c_name.as_ptr(), c_ns.as_ptr()) };
if value_ptr.is_null() {
return None;
}
let c_value_string = unsafe { CStr::from_ptr(value_ptr) };
let prop_str = c_value_string.to_string_lossy().into_owned();
unsafe {
libc::free(value_ptr as *mut c_void);
}
Some(prop_str)
}
pub fn get_property_node(&self, name: &str) -> Option<Node> {
let c_name = CString::new(name).unwrap();
unsafe {
let attr_node = xmlHasProp(self.node_ptr, c_name.as_ptr());
if attr_node.is_null() {
None
} else {
Some(Node {
node_ptr: attr_node,
})
}
}
}
pub fn set_property(&mut self, name: &str, value: &str) {
let c_name = CString::new(name).unwrap();
let c_value = CString::new(value).unwrap();
unsafe { xmlSetProp(self.node_ptr, c_name.as_ptr(), c_value.as_ptr()) };
}
pub fn set_property_ns(&mut self, name: &str, value: &str, ns: &Namespace) {
let c_name = CString::new(name).unwrap();
let c_value = CString::new(value).unwrap();
unsafe { xmlSetNsProp(self.node_ptr, ns.ns_ptr, c_name.as_ptr(), c_value.as_ptr()) };
}
pub fn remove_property(&mut self, name: &str) {
let c_name = CString::new(name).unwrap();
unsafe {
let attr_node = xmlHasProp(self.node_ptr, c_name.as_ptr());
if !attr_node.is_null() {
xmlRemoveProp(attr_node);
}
}
}
pub fn get_attribute(&self, name: &str) -> Option<String> {
self.get_property(name)
}
pub fn get_attribute_ns(&self, name: &str, ns: &str) -> Option<String> {
self.get_property_ns(name, ns)
}
pub fn get_attribute_node(&self, name: &str) -> Option<Node> {
self.get_property_node(name)
}
pub fn set_attribute(&mut self, name: &str, value: &str) {
self.set_property(name, value)
}
pub fn set_attribute_ns(&mut self, name: &str, value: &str, ns: &Namespace) {
self.set_property_ns(name, value, ns)
}
pub fn remove_attribute(&mut self, name: &str) {
self.remove_property(name)
}
pub fn get_properties(&self) -> HashMap<String, String> {
let mut attributes = HashMap::new();
let mut attr_names = Vec::new();
unsafe {
let mut current_prop = xmlGetFirstProperty(self.node_ptr);
while !current_prop.is_null() {
let name_ptr = xmlAttrName(current_prop);
let c_name_string = CStr::from_ptr(name_ptr);
let name = c_name_string.to_string_lossy().into_owned();
attr_names.push(name);
current_prop = xmlNextPropertySibling(current_prop);
}
}
for name in attr_names {
let value = self.get_property(&name).unwrap_or_default();
attributes.insert(name, value);
}
attributes
}
pub fn get_attributes(&self) -> HashMap<String, String> {
self.get_properties()
}
pub fn get_namespace(&self) -> Option<Namespace> {
unsafe {
let ns_ptr = xmlNodeNs(self.node_ptr);
if ns_ptr.is_null() {
None
} else {
Some(Namespace { ns_ptr: ns_ptr })
}
}
}
pub fn get_namespaces(&self, doc: &Document) -> Vec<Namespace> {
let mut ns_found = Vec::new();
unsafe {
let ns_ptr_list = xmlGetNsList(doc.doc_ptr, self.node_ptr);
if !ns_ptr_list.is_null() {
for index in 0.. {
let ns_ptr = *ns_ptr_list.offset(index);
if !ns_ptr.is_null() {
ns_found.push(Namespace { ns_ptr: ns_ptr });
} else {
break;
}
}
}
}
ns_found
}
pub fn get_namespace_declarations(&self) -> Vec<Namespace> {
let mut declarations = Vec::new();
if self.get_type() != Some(NodeType::ElementNode) {
return declarations;
}
unsafe {
let mut ns = xmlNodeNsDeclarations(self.node_ptr);
while !ns.is_null() {
if !xmlNsPrefix(ns).is_null() || !xmlNsHref(ns).is_null() {
let ns_copy = xmlCopyNamespace(ns);
if !ns_copy.is_null() {
declarations.push(Namespace { ns_ptr: ns_copy });
}
ns = xmlNextNsSibling(ns);
}
}
}
declarations
}
pub fn set_namespace(&mut self, namespace: &Namespace) {
unsafe {
xmlSetNs(self.node_ptr, namespace.ns_ptr);
}
}
pub fn lookup_namespace_prefix(&self, href: &str) -> Option<String> {
if href.is_empty() {
return None;
}
let c_href = CString::new(href).unwrap();
unsafe {
let ns_ptr = xmlSearchNsByHref(xmlGetDoc(self.node_ptr), self.node_ptr, c_href.as_ptr());
if !ns_ptr.is_null() {
let ns = Namespace { ns_ptr: ns_ptr };
let ns_prefix = ns.get_prefix();
Some(ns_prefix)
} else {
None
}
}
}
pub fn lookup_namespace_uri(&self, prefix: &str) -> Option<String> {
if prefix.is_empty() {
return None;
}
let c_prefix = CString::new(prefix).unwrap();
unsafe {
let ns_ptr = xmlSearchNs(xmlGetDoc(self.node_ptr), self.node_ptr, c_prefix.as_ptr());
if !ns_ptr.is_null() {
let ns = Namespace { ns_ptr: ns_ptr };
let ns_prefix = ns.get_href();
if !ns_prefix.is_empty() {
Some(ns_prefix)
} else {
None
}
} else {
None
}
}
}
pub fn recursively_remove_namespaces(&mut self) {
unsafe { xmlNodeRecursivelyRemoveNs(self.node_ptr) }
}
pub fn get_class_names(&self) -> HashSet<String> {
let mut set = HashSet::new();
if let Some(value) = self.get_property("class") {
for n in value.split(' ') {
set.insert(n.to_owned());
}
}
set
}
pub fn add_child(&mut self, child: Node) -> Result<Node, ()> {
unsafe {
let new_child_ptr = xmlAddChild(self.node_ptr, child.node_ptr);
if new_child_ptr.is_null() {
Err(())
} else {
Ok(Node {
node_ptr: new_child_ptr,
})
}
}
}
pub fn new_child(&mut self, ns: Option<Namespace>, name: &str) -> Result<Node, ()> {
let c_name = CString::new(name).unwrap();
let ns_ptr = match ns {
None => ptr::null_mut(),
Some(ns) => ns.ns_ptr,
};
unsafe {
let new_ptr = xmlNewChild(self.node_ptr, ns_ptr, c_name.as_ptr(), ptr::null());
Ok(Node { node_ptr: new_ptr })
}
}
pub fn add_text_child(
&mut self,
ns: Option<Namespace>,
name: &str,
content: &str,
) -> Result<Node, ()> {
let c_name = CString::new(name).unwrap();
let c_content = CString::new(content).unwrap();
let ns_ptr = match ns {
None => ptr::null_mut(),
Some(ns) => ns.ns_ptr,
};
unsafe {
let new_ptr = xmlNewTextChild(self.node_ptr, ns_ptr, c_name.as_ptr(), c_content.as_ptr());
Ok(Node { node_ptr: new_ptr })
}
}
pub fn append_text(&mut self, content: &str) {
let c_len = content.len() as i32;
if c_len > 0 {
let c_content = CString::new(content).unwrap();
unsafe {
xmlNodeAddContentLen(self.node_ptr, c_content.as_ptr(), c_len);
}
}
}
pub fn unlink_node(&mut self) {
let node_type = self.get_type();
if node_type != Some(NodeType::DocumentNode) && node_type != Some(NodeType::DocumentFragNode) {
unsafe {
xmlUnlinkNode(self.node_ptr);
}
}
}
pub fn unlink(&mut self) {
self.unlink_node()
}
pub fn unbind_node(&mut self) {
self.unlink_node()
}
pub fn unbind(&mut self) {
self.unlink_node()
}
pub fn free(self) {
unsafe { xmlFreeNode(self.node_ptr) }
}
}
#[derive(Clone)]
pub struct Namespace {
pub ns_ptr: *mut c_void,
}
impl Namespace {
pub fn new(prefix: &str, href: &str, node: &Node) -> Result<Self, ()> {
let c_href = CString::new(href).unwrap();
let c_prefix = CString::new(prefix).unwrap();
let c_prefix_ptr = if prefix.is_empty() {
ptr::null()
} else {
c_prefix.as_ptr()
};
unsafe {
let ns = xmlNewNs(node.node_ptr, c_href.as_ptr(), c_prefix_ptr);
if ns.is_null() {
Err(())
} else {
Ok(Namespace { ns_ptr: ns })
}
}
}
pub fn get_prefix(&self) -> String {
unsafe {
let prefix_ptr = xmlNsPrefix(self.ns_ptr);
if prefix_ptr.is_null() {
String::new()
} else {
let c_prefix = CStr::from_ptr(prefix_ptr);
c_prefix.to_string_lossy().into_owned()
}
}
}
pub fn get_href(&self) -> String {
unsafe {
let href_ptr = xmlNsHref(self.ns_ptr);
if href_ptr.is_null() {
String::new()
} else {
let c_href = CStr::from_ptr(href_ptr);
c_href.to_string_lossy().into_owned()
}
}
}
pub fn free(self) {
unsafe { xmlFreeNs(self.ns_ptr) }
}
}
impl Drop for Namespace {
fn drop(&mut self) {
}
}