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feat: add remove_attributes() and remove_children()

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This commit is contained in:
Tuan Anh Tran 2019-09-17 09:46:59 +07:00
parent ccb63a9186
commit d1b566fc26
3 changed files with 63 additions and 0 deletions
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33
src/pugixml.cpp
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@ -6059,6 +6059,23 @@ namespace pugi
return true;
}
PUGI__FN bool xml_node::remove_attributes()
{
for(pugi::xml_attribute a: this->attributes())
{
if (!_root || !a._attr) return false;
if (!impl::is_attribute_of(a._attr, _root)) return false;
impl::xml_allocator& alloc = impl::get_allocator(_root);
if (!alloc.reserve()) return false;
impl::destroy_attribute(a._attr, alloc);
}
this->_root->first_attribute = nullptr;
return true;
}
PUGI__FN bool xml_node::remove_child(const char_t* name_)
{
return remove_child(child(name_));
@ -6077,6 +6094,22 @@ namespace pugi
return true;
}
PUGI__FN bool xml_node::remove_children()
{
for (pugi::xml_node child: this->children())
{
if (!_root || !child._root || child._root->parent != _root) return false;
impl::xml_allocator& alloc = impl::get_allocator(_root);
if (!alloc.reserve()) return false;
impl::destroy_node(child._root, alloc);
}
this->_root->first_child = nullptr;
return true;
}
PUGI__FN xml_parse_result xml_node::append_buffer(const void* contents, size_t size, unsigned int options, xml_encoding encoding)
{
// append_buffer is only valid for elements/documents

6
src/pugixml.hpp
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@ -576,10 +576,16 @@ namespace pugi
bool remove_attribute(const xml_attribute& a);
bool remove_attribute(const char_t* name);
// Remove all attributes
bool remove_attributes();
// Remove specified child
bool remove_child(const xml_node& n);
bool remove_child(const char_t* name);
// Remove all children
bool remove_children();
// Parses buffer as an XML document fragment and appends all nodes as children of the current node.
// Copies/converts the buffer, so it may be deleted or changed after the function returns.
// Note: append_buffer allocates memory that has the lifetime of the owning document; removing the appended nodes does not immediately reclaim that memory.

24
tests/test_dom_modify.cpp
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@ -492,6 +492,18 @@ TEST_XML(dom_node_remove_attribute, "<node a1='v1' a2='v2' a3='v3'><child a4='v4
CHECK_NODE(doc, STR("<node a2=\"v2\"><child/></node>"));
}
TEST_XML(dom_node_remove_attributes, "<node a1='v1' a2='v2' a3='v3'><child a4='v4'/></node>")
{
xml_node node = doc.child(STR("node"));
xml_node child = node.child(STR("child"));
CHECK(child.remove_attributes());
CHECK_NODE(child, STR("<child/>"));
CHECK(node.remove_attributes());
CHECK_NODE(node, STR("<node><child/></node>"));
}
TEST_XML(dom_node_prepend_child, "<node>foo<child/></node>")
{
CHECK(xml_node().prepend_child() == xml_node());
@ -707,6 +719,18 @@ TEST_XML(dom_node_remove_child, "<node><n1/><n2/><n3/><child><n4/></child></node
CHECK_NODE(doc, STR("<node><n2/><child/></node>"));
}
TEST_XML(dom_node_remove_children, "<node><n1/><n2/><n3/><child><n4/></child></node>")
{
xml_node node = doc.child(STR("node"));
xml_node child = node.child(STR("child"));
CHECK(child.remove_children());
CHECK_NODE(child, STR("<child/>"));
CHECK(node.remove_children());
CHECK_NODE(node, STR("<node/>"));
}
TEST_XML(dom_node_remove_child_complex, "<node id='1'><n1 id1='1' id2='2'/><n2/><n3/><child><n4/></child></node>")
{
CHECK(doc.child(STR("node")).remove_child(STR("n1")));