* libxml++ and this file are copyright (C) 2000 by Ari Johnson, and
* are covered by the GNU Lesser General Public License, which should be
* included with libxml++ as the file COPYING.
+ * Modified for Ardour and released under the same terms.
*/
-#include <pbd/xml++.h>
+#include <iostream>
+#include "pbd/xml++.h"
#include <libxml/debugXML.h>
+#include <libxml/xpath.h>
+#include <libxml/xpathInternals.h>
-static XMLNode *readnode(xmlNodePtr);
-static void writenode(xmlDocPtr, XMLNode *, xmlNodePtr, int);
+xmlChar* xml_version = xmlCharStrdup("1.0");
-XMLTree::XMLTree()
- : _filename(),
- _root(),
- _compression(0),
- _initialized(false)
-{
+using namespace std;
+
+static XMLNode* readnode(xmlNodePtr);
+static void writenode(xmlDocPtr, XMLNode*, xmlNodePtr, int);
+static XMLSharedNodeList* find_impl(xmlXPathContext* ctxt, const string& xpath);
+
+XMLTree::XMLTree()
+ : _filename()
+ , _root(0)
+ , _doc (0)
+ , _compression(0)
+{
}
-XMLTree::XMLTree(const string &fn)
- : _filename(fn),
- _root(0),
- _compression(0),
- _initialized(false)
-{
- read();
+XMLTree::XMLTree(const string& fn, bool validate)
+ : _filename(fn)
+ , _root(0)
+ , _doc (0)
+ , _compression(0)
+{
+ read_internal(validate);
}
-XMLTree::XMLTree(const XMLTree * from)
+XMLTree::XMLTree(const XMLTree* from)
+ : _filename(from->filename())
+ , _root(new XMLNode(*from->root()))
+ , _doc (xmlCopyDoc (from->_doc, 1))
+ , _compression(from->compression())
{
- _filename = from->filename();
- _root = new XMLNode(*from->root());
- _compression = from->compression();
- _initialized = true;
+
}
XMLTree::~XMLTree()
{
- if (_initialized && _root)
- delete _root;
+ delete _root;
+
+ if (_doc) {
+ xmlFreeDoc (_doc);
+ }
}
-int
+int
XMLTree::set_compression(int c)
{
- if (c > 9)
+ if (c > 9) {
c = 9;
-
- if (c < 0)
+ } else if (c < 0) {
c = 0;
+ }
- _compression = c;
+ _compression = c;
- return _compression;
+ return _compression;
}
-bool
-XMLTree::read(void)
+bool
+XMLTree::read_internal(bool validate)
{
- xmlDocPtr doc;
+ //shouldnt be used anywhere ATM, remove if so!
+ assert(!validate);
- if (_root) {
- delete _root;
- _root = 0;
- }
+ delete _root;
+ _root = 0;
- xmlKeepBlanksDefault(0);
+ if (_doc) {
+ xmlFreeDoc (_doc);
+ _doc = 0;
+ }
- doc = xmlParseFile(_filename.c_str());
- if (!doc) {
- _initialized = false;
+ xmlParserCtxtPtr ctxt = NULL; /* the parser context */
+
+ xmlKeepBlanksDefault(0);
+ /* parse the file, activating the DTD validation option */
+ if (validate) {
+ /* create a parser context */
+ ctxt = xmlNewParserCtxt();
+ if (ctxt == NULL) {
+ return false;
+ }
+ _doc = xmlCtxtReadFile(ctxt, _filename.c_str(), NULL, XML_PARSE_DTDVALID);
+ } else {
+ _doc = xmlParseFile(_filename.c_str());
+ }
+
+ /* check if parsing suceeded */
+ if (_doc == NULL) {
+ if (validate) {
+ xmlFreeParserCtxt(ctxt);
+ }
return false;
- }
+ } else {
+ /* check if validation suceeded */
+ if (validate && ctxt->valid == 0) {
+ xmlFreeParserCtxt(ctxt);
+ throw XMLException("Failed to validate document " + _filename);
+ }
+ }
- _root = readnode(xmlDocGetRootElement(doc));
- xmlFreeDoc(doc);
- _initialized = true;
+ _root = readnode(xmlDocGetRootElement(_doc));
- return true;
+ /* free up the parser context */
+ if (validate) {
+ xmlFreeParserCtxt(ctxt);
+ }
+
+ return true;
}
-bool
-XMLTree::read_buffer(const string & buffer)
+bool
+XMLTree::read_buffer(const string& buffer)
{
- xmlDocPtr doc;
+ xmlDocPtr doc;
- _filename = "";
+ _filename = "";
- if (_root) {
- delete _root;
- _root = 0;
- }
+ delete _root;
+ _root = 0;
- doc = xmlParseMemory((char *) buffer.c_str(), buffer.length());
- if (!doc) {
- _initialized = false;
+ doc = xmlParseMemory(const_cast<char*>(buffer.c_str()), buffer.length());
+ if (!doc) {
return false;
- }
+ }
- _root = readnode(xmlDocGetRootElement(doc));
- xmlFreeDoc(doc);
- _initialized = true;
+ _root = readnode(xmlDocGetRootElement(doc));
+ xmlFreeDoc(doc);
- return true;
+ return true;
}
-bool
-XMLTree::write(void) const
-{
- xmlDocPtr doc;
- XMLNodeList children;
- int result;
-
- xmlKeepBlanksDefault(0);
- doc = xmlNewDoc((xmlChar *) "1.0");
- xmlSetDocCompressMode(doc, _compression);
- writenode(doc, _root, doc->children, 1);
- result = xmlSaveFormatFile(_filename.c_str(), doc, 1);
- xmlFreeDoc(doc);
- if (result == -1)
+bool
+XMLTree::write() const
+{
+ xmlDocPtr doc;
+ XMLNodeList children;
+ int result;
+
+ xmlKeepBlanksDefault(0);
+ doc = xmlNewDoc(xml_version);
+ xmlSetDocCompressMode(doc, _compression);
+ writenode(doc, _root, doc->children, 1);
+ result = xmlSaveFormatFileEnc(_filename.c_str(), doc, "UTF-8", 1);
+ xmlFreeDoc(doc);
+
+ if (result == -1) {
return false;
+ }
- return true;
+ return true;
}
void
XMLTree::debug(FILE* out) const
{
- xmlDocPtr doc;
- XMLNodeList children;
-
- xmlKeepBlanksDefault(0);
- doc = xmlNewDoc((xmlChar *) "1.0");
- xmlSetDocCompressMode(doc, _compression);
- writenode(doc, _root, doc->children, 1);
- xmlDebugDumpDocument (out, doc);
- xmlFreeDoc(doc);
+ xmlDocPtr doc;
+ XMLNodeList children;
+
+ xmlKeepBlanksDefault(0);
+ doc = xmlNewDoc(xml_version);
+ xmlSetDocCompressMode(doc, _compression);
+ writenode(doc, _root, doc->children, 1);
+ xmlDebugDumpDocument (out, doc);
+ xmlFreeDoc(doc);
}
-const string &
-XMLTree::write_buffer(void) const
+const string&
+XMLTree::write_buffer() const
{
- static string retval;
- char *ptr;
- int len;
- xmlDocPtr doc;
- XMLNodeList children;
+ static string retval;
+ char* ptr;
+ int len;
+ xmlDocPtr doc;
+ XMLNodeList children;
- xmlKeepBlanksDefault(0);
- doc = xmlNewDoc((xmlChar *) "1.0");
- xmlSetDocCompressMode(doc, _compression);
- writenode(doc, _root, doc->children, 1);
- xmlDocDumpMemory(doc, (xmlChar **) & ptr, &len);
- xmlFreeDoc(doc);
+ xmlKeepBlanksDefault(0);
+ doc = xmlNewDoc(xml_version);
+ xmlSetDocCompressMode(doc, _compression);
+ writenode(doc, _root, doc->children, 1);
+ xmlDocDumpMemory(doc, (xmlChar **) & ptr, &len);
+ xmlFreeDoc(doc);
- retval = ptr;
+ retval = ptr;
- free(ptr);
+ free(ptr);
- return retval;
+ return retval;
}
-XMLNode::XMLNode(const string & n)
- : _name(n), _is_content(false), _content(string())
+XMLNode::XMLNode(const string& n)
+ : _name(n)
+ , _is_content(false)
{
-
- if (_name.empty())
- _initialized = false;
- else
- _initialized = true;
}
-XMLNode::XMLNode(const string & n, const string & c)
- :_name(string()), _is_content(true), _content(c)
+XMLNode::XMLNode(const string& n, const string& c)
+ : _name(n)
+ , _is_content(true)
+ , _content(c)
{
- _initialized = true;
}
XMLNode::XMLNode(const XMLNode& from)
- : _initialized(false)
{
- XMLPropertyList props;
- XMLPropertyIterator curprop;
- XMLNodeList nodes;
- XMLNodeIterator curnode;
-
- _name = from.name();
- set_content(from.content());
-
- props = from.properties();
- for (curprop = props.begin(); curprop != props.end(); curprop++)
- add_property((*curprop)->name().c_str(), (*curprop)->value());
-
- nodes = from.children();
- for (curnode = nodes.begin(); curnode != nodes.end(); curnode++)
- add_child_copy(**curnode);
+ *this = from;
}
XMLNode::~XMLNode()
{
- XMLNodeIterator curchild;
- XMLPropertyIterator curprop;
+ clear_lists ();
+}
- for (curchild = _children.begin(); curchild != _children.end();
- curchild++)
+void
+XMLNode::clear_lists ()
+{
+ XMLNodeIterator curchild;
+ XMLPropertyIterator curprop;
+
+ _selected_children.clear ();
+ _propmap.clear ();
+
+ for (curchild = _children.begin(); curchild != _children.end(); ++curchild) {
delete *curchild;
+ }
- for (curprop = _proplist.begin(); curprop != _proplist.end();
- curprop++)
+ _children.clear ();
+
+ for (curprop = _proplist.begin(); curprop != _proplist.end(); ++curprop) {
delete *curprop;
+ }
+
+ _proplist.clear ();
}
-const string &
-XMLNode::set_content(const string & c)
+XMLNode&
+XMLNode::operator= (const XMLNode& from)
{
- if (c.empty())
+ if (&from != this) {
+
+ XMLPropertyList props;
+ XMLPropertyIterator curprop;
+ XMLNodeList nodes;
+ XMLNodeIterator curnode;
+
+ clear_lists ();
+
+ _name = from.name();
+ set_content(from.content());
+
+ props = from.properties();
+ for (curprop = props.begin(); curprop != props.end(); ++curprop) {
+ add_property((*curprop)->name().c_str(), (*curprop)->value());
+ }
+
+ nodes = from.children();
+ for (curnode = nodes.begin(); curnode != nodes.end(); ++curnode) {
+ add_child_copy(**curnode);
+ }
+ }
+
+ return *this;
+}
+
+const string&
+XMLNode::set_content(const string& c)
+{
+ if (c.empty()) {
_is_content = false;
- else
+ } else {
_is_content = true;
+ }
+
+ _content = c;
+
+ return _content;
+}
+
+XMLNode*
+XMLNode::child (const char* name) const
+{
+ /* returns first child matching name */
+
+ XMLNodeConstIterator cur;
+
+ if (name == 0) {
+ return 0;
+ }
- _content = c;
+ for (cur = _children.begin(); cur != _children.end(); ++cur) {
+ if ((*cur)->name() == name) {
+ return *cur;
+ }
+ }
- return _content;
+ return 0;
}
-const XMLNodeList &
-XMLNode::children(const string & n) const
+const XMLNodeList&
+XMLNode::children(const string& n) const
{
- static XMLNodeList retval;
- XMLNodeConstIterator cur;
+ /* returns all children matching name */
+
+ XMLNodeConstIterator cur;
- if (n.length() == 0)
+ if (n.empty()) {
return _children;
+ }
- retval.erase(retval.begin(), retval.end());
+ _selected_children.clear();
- for (cur = _children.begin(); cur != _children.end(); cur++)
- if ((*cur)->name() == n)
- retval.insert(retval.end(), *cur);
+ for (cur = _children.begin(); cur != _children.end(); ++cur) {
+ if ((*cur)->name() == n) {
+ _selected_children.insert(_selected_children.end(), *cur);
+ }
+ }
- return retval;
+ return _selected_children;
}
-XMLNode *
-XMLNode::add_child(const char * n)
+XMLNode*
+XMLNode::add_child(const char* n)
{
return add_child_copy(XMLNode (n));
}
void
-XMLNode::add_child_nocopy (XMLNode& n)
+XMLNode::add_child_nocopy(XMLNode& n)
{
_children.insert(_children.end(), &n);
}
-XMLNode *
+XMLNode*
XMLNode::add_child_copy(const XMLNode& n)
{
- XMLNode *copy = new XMLNode (n);
+ XMLNode *copy = new XMLNode(n);
_children.insert(_children.end(), copy);
return copy;
}
-XMLNode *
-XMLNode::add_content(const string & c)
+boost::shared_ptr<XMLSharedNodeList>
+XMLTree::find(const string xpath, XMLNode* node) const
+{
+ xmlXPathContext* ctxt;
+ xmlDocPtr doc = 0;
+
+ if (node) {
+ doc = xmlNewDoc(xml_version);
+ writenode(doc, node, doc->children, 1);
+ ctxt = xmlXPathNewContext(doc);
+ } else {
+ ctxt = xmlXPathNewContext(_doc);
+ }
+
+ boost::shared_ptr<XMLSharedNodeList> result =
+ boost::shared_ptr<XMLSharedNodeList>(find_impl(ctxt, xpath));
+
+ xmlXPathFreeContext(ctxt);
+ if (doc) {
+ xmlFreeDoc (doc);
+ }
+
+ return result;
+}
+
+std::string
+XMLNode::attribute_value()
+{
+ XMLNodeList children = this->children();
+ assert(!_is_content);
+ assert(children.size() == 1);
+ XMLNode* child = *(children.begin());
+ assert(child->is_content());
+ return child->content();
+}
+
+XMLNode*
+XMLNode::add_content(const string& c)
{
return add_child_copy(XMLNode (string(), c));
}
-XMLProperty *
-XMLNode::property(const char * n)
+XMLProperty*
+XMLNode::property(const char* n)
{
string ns(n);
- if (_propmap.find(ns) == _propmap.end())
- return 0;
- return _propmap[ns];
+ map<string,XMLProperty*>::iterator iter;
+
+ if ((iter = _propmap.find(ns)) != _propmap.end()) {
+ return iter->second;
+ }
+
+ return 0;
+}
+
+XMLProperty*
+XMLNode::property(const string& ns)
+{
+ map<string,XMLProperty*>::iterator iter;
+
+ if ((iter = _propmap.find(ns)) != _propmap.end()) {
+ return iter->second;
+ }
+
+ return 0;
}
-XMLProperty *
-XMLNode::add_property(const char * n, const string & v)
+XMLProperty*
+XMLNode::add_property(const char* n, const string& v)
{
string ns(n);
- if(_propmap.find(ns) != _propmap.end()){
- remove_property(ns);
+ map<string,XMLProperty*>::iterator iter;
+
+ if ((iter = _propmap.find(ns)) != _propmap.end()) {
+ iter->second->set_value (v);
+ return iter->second;
}
- XMLProperty *tmp = new XMLProperty(ns, v);
+ XMLProperty* tmp = new XMLProperty(ns, v);
- if (!tmp)
+ if (!tmp) {
return 0;
+ }
_propmap[tmp->name()] = tmp;
_proplist.insert(_proplist.end(), tmp);
return tmp;
}
-XMLProperty *
-XMLNode::add_property(const char * n, const char * v)
+XMLProperty*
+XMLNode::add_property(const char* n, const char* v)
{
string vs(v);
return add_property(n, vs);
}
-void
-XMLNode::remove_property(const string & n)
+XMLProperty*
+XMLNode::add_property(const char* name, const long value)
+{
+ char str[64];
+ snprintf(str, sizeof(str), "%ld", value);
+ return add_property(name, str);
+}
+
+void
+XMLNode::remove_property(const string& n)
{
- if (_propmap.find(n) != _propmap.end()) {
- _proplist.remove(_propmap[n]);
+ if (_propmap.find(n) != _propmap.end()) {
+ XMLProperty* p = _propmap[n];
+ _proplist.remove (p);
+ delete p;
_propmap.erase(n);
- }
+ }
}
-void
-XMLNode::remove_nodes(const string & n)
+/** Remove any property with the given name from this node and its children */
+void
+XMLNode::remove_property_recursively(const string& n)
{
- XMLNodeIterator i = _children.begin();
- XMLNodeIterator tmp;
+ remove_property (n);
+ for (XMLNodeIterator i = _children.begin(); i != _children.end(); ++i) {
+ (*i)->remove_property_recursively (n);
+ }
+}
- while (i != _children.end()) {
- tmp = i;
- ++tmp;
- if ((*i)->name() == n) {
- _children.erase (i);
- }
- i = tmp;
- }
+void
+XMLNode::remove_nodes(const string& n)
+{
+ XMLNodeIterator i = _children.begin();
+ XMLNodeIterator tmp;
+
+ while (i != _children.end()) {
+ tmp = i;
+ ++tmp;
+ if ((*i)->name() == n) {
+ _children.erase (i);
+ }
+ i = tmp;
+ }
}
-void
-XMLNode::remove_nodes_and_delete(const string & n)
+void
+XMLNode::remove_nodes_and_delete(const string& n)
{
- XMLNodeIterator i = _children.begin();
- XMLNodeIterator tmp;
+ XMLNodeIterator i = _children.begin();
+ XMLNodeIterator tmp;
+
+ while (i != _children.end()) {
+ tmp = i;
+ ++tmp;
+ if ((*i)->name() == n) {
+ delete *i;
+ _children.erase (i);
+ }
+ i = tmp;
+ }
+}
- while (i != _children.end()) {
- tmp = i;
- ++tmp;
- if ((*i)->name() == n) {
- delete *i;
- _children.erase (i);
- }
- i = tmp;
- }
+void
+XMLNode::remove_nodes_and_delete(const string& propname, const string& val)
+{
+ XMLNodeIterator i = _children.begin();
+ XMLNodeIterator tmp;
+ XMLProperty* prop;
+
+ while (i != _children.end()) {
+ tmp = i;
+ ++tmp;
+
+ prop = (*i)->property(propname);
+ if (prop && prop->value() == val) {
+ delete *i;
+ _children.erase(i);
+ }
+
+ i = tmp;
+ }
}
-XMLProperty::XMLProperty(const string &n, const string &v)
- : _name(n),
- _value(v)
-{
+XMLProperty::XMLProperty(const string& n, const string& v)
+ : _name(n)
+ , _value(v)
+{
+ // Normalize property name (replace '_' with '-' as old session are inconsistent)
+ for (size_t i = 0; i < _name.length(); ++i) {
+ if (_name[i] == '_') {
+ _name[i] = '-';
+ }
+ }
}
XMLProperty::~XMLProperty()
{
}
-static XMLNode *
+static XMLNode*
readnode(xmlNodePtr node)
{
- string name, content;
- xmlNodePtr child;
- XMLNode *tmp;
- xmlAttrPtr attr;
+ string name, content;
+ xmlNodePtr child;
+ XMLNode* tmp;
+ xmlAttrPtr attr;
- if (node->name)
- name = (char *) node->name;
+ if (node->name) {
+ name = (const char*)node->name;
+ }
- tmp = new XMLNode(name);
+ tmp = new XMLNode(name);
- for (attr = node->properties; attr; attr = attr->next) {
+ for (attr = node->properties; attr; attr = attr->next) {
content = "";
- if (attr->children)
- content = (char *) attr->children->content;
- tmp->add_property((char *) attr->name, content);
- }
-
- if (node->content)
- tmp->set_content((char *) node->content);
- else
+ if (attr->children) {
+ content = (char*)attr->children->content;
+ }
+ tmp->add_property((const char*)attr->name, content);
+ }
+
+ if (node->content) {
+ tmp->set_content((char*)node->content);
+ } else {
tmp->set_content(string());
+ }
- for (child = node->children; child; child = child->next)
- tmp->add_child_nocopy (*readnode(child));
+ for (child = node->children; child; child = child->next) {
+ tmp->add_child_nocopy (*readnode(child));
+ }
- return tmp;
+ return tmp;
}
-static void
-writenode(xmlDocPtr doc, XMLNode * n, xmlNodePtr p, int root =
- 0)
+static void
+writenode(xmlDocPtr doc, XMLNode* n, xmlNodePtr p, int root = 0)
{
- XMLPropertyList props;
- XMLPropertyIterator curprop;
- XMLNodeList children;
- XMLNodeIterator curchild;
- xmlNodePtr node;
+ XMLPropertyList props;
+ XMLPropertyIterator curprop;
+ XMLNodeList children;
+ XMLNodeIterator curchild;
+ xmlNodePtr node;
+
+ if (root) {
+ node = doc->children = xmlNewDocNode(doc, 0, (const xmlChar*) n->name().c_str(), 0);
+ } else {
+ node = xmlNewChild(p, 0, (const xmlChar*) n->name().c_str(), 0);
+ }
- if (root)
- node = doc->children =
- xmlNewDocNode(doc, 0, (xmlChar *) n->name().c_str(), 0);
+ if (n->is_content()) {
+ node->type = XML_TEXT_NODE;
+ xmlNodeSetContentLen(node, (const xmlChar*)n->content().c_str(), n->content().length());
+ }
- else
- node = xmlNewChild(p, 0, (xmlChar *) n->name().c_str(), 0);
+ props = n->properties();
+ for (curprop = props.begin(); curprop != props.end(); ++curprop) {
+ xmlSetProp(node, (const xmlChar*) (*curprop)->name().c_str(), (const xmlChar*) (*curprop)->value().c_str());
+ }
- if (n->is_content()) {
- node->type = XML_TEXT_NODE;
- xmlNodeSetContentLen(node, (const xmlChar *) n->content().c_str(),
- n->content().length());
- }
-
- props = n->properties();
- for (curprop = props.begin(); curprop != props.end(); curprop++)
- xmlSetProp(node, (xmlChar *) (*curprop)->name().c_str(),
- (xmlChar *) (*curprop)->value().c_str());
-
- children = n->children();
- for (curchild = children.begin(); curchild != children.end();
- curchild++)
+ children = n->children();
+ for (curchild = children.begin(); curchild != children.end(); ++curchild) {
writenode(doc, *curchild, node);
+ }
+}
+
+static XMLSharedNodeList* find_impl(xmlXPathContext* ctxt, const string& xpath)
+{
+ xmlXPathObject* result = xmlXPathEval((const xmlChar*)xpath.c_str(), ctxt);
+
+ if (!result) {
+ xmlXPathFreeContext(ctxt);
+ xmlFreeDoc(ctxt->doc);
+
+ throw XMLException("Invalid XPath: " + xpath);
+ }
+
+ if (result->type != XPATH_NODESET) {
+ xmlXPathFreeObject(result);
+ xmlXPathFreeContext(ctxt);
+ xmlFreeDoc(ctxt->doc);
+
+ throw XMLException("Only nodeset result types are supported.");
+ }
+
+ xmlNodeSet* nodeset = result->nodesetval;
+ XMLSharedNodeList* nodes = new XMLSharedNodeList();
+ if (nodeset) {
+ for (int i = 0; i < nodeset->nodeNr; ++i) {
+ XMLNode* node = readnode(nodeset->nodeTab[i]);
+ nodes->push_back(boost::shared_ptr<XMLNode>(node));
+ }
+ } else {
+ // return empty set
+ }
+
+ xmlXPathFreeObject(result);
+
+ return nodes;
+}
+
+/** Dump a node, its properties and children to a stream */
+void
+XMLNode::dump (ostream& s, string p) const
+{
+ if (_is_content) {
+ s << p << " " << content() << "\n";
+ } else {
+ s << p << "<" << _name;
+ for (XMLPropertyList::const_iterator i = _proplist.begin(); i != _proplist.end(); ++i) {
+ s << " " << (*i)->name() << "=\"" << (*i)->value() << "\"";
+ }
+ s << ">\n";
+
+ for (XMLNodeList::const_iterator i = _children.begin(); i != _children.end(); ++i) {
+ (*i)->dump (s, p + " ");
+ }
+
+ s << p << "</" << _name << ">\n";
+ }
}
projects / ardour.git / blobdiff