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/*
* Copyright (C) 2010 Vyatta, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <cstdio>
#include <cstring>
#include <vector>
#include <string>
#include <algorithm>
#include <memory>
#include <cli_cstore.h>
#include <cnode/cnode.hpp>
using namespace cnode;
////// constructors/destructors
CfgNode::CfgNode(Cpath& path_comps, char *name, char *val, char *comment,
int deact, Cstore *cstore, bool tag_if_invalid)
: _is_tag(false), _is_leaf(false), _is_multi(false), _is_value(false),
_is_default(false), _is_deactivated(false), _is_leaf_typeless(false),
_is_invalid(false), _is_empty(true), _exists(true)
{
if (name && name[0]) {
// name must be non-empty
path_comps.push(name);
}
if (val) {
// value could be empty
path_comps.push(val);
}
while (1) {
if (path_comps.size() == 0) {
// nothing to do for root node
break;
}
tr1::shared_ptr<Ctemplate> def(cstore->parseTmpl(path_comps, false));
if (def.get()) {
// got the def
_is_tag = def->isTag();
_is_leaf = (!_is_tag && !def->isTypeless());
// match constructor from cstore (leaf node never _is_value)
_is_value = (def->isValue() && !_is_leaf);
_is_multi = def->isMulti();
/* XXX given the current definition of "default", the concept of
* "default" doesn't really apply to config files.
*/
_is_default = false;
_is_deactivated = deact;
vector<string> tcnodes;
cstore->tmplGetChildNodes(path_comps, tcnodes);
if (tcnodes.size() == 0) {
// typeless leaf node
_is_leaf_typeless = true;
}
if (comment) {
_comment = comment;
}
// ignore return
} else {
// not a valid node
_is_invalid = true;
if (tag_if_invalid) {
/* this is only used when the parser is creating a "tag node". force
* the node to be tag since we don't have template for invalid node.
*/
_is_tag = true;
}
if (val) {
/* if parser got value for the invalid node, always treat it as
* "tag value" for simplicity.
*/
_is_tag = true;
_is_value = true;
}
break;
}
break;
}
// restore path_comps. also set value/name for both valid and invalid nodes.
if (val) {
if (_is_multi) {
_values.push_back(val);
} else {
_value = val;
}
path_comps.pop();
}
if (name && name[0]) {
_name = name;
path_comps.pop();
}
}
CfgNode::CfgNode(Cstore& cstore, Cpath& path_comps, bool active,
bool recursive)
: _is_tag(false), _is_leaf(false), _is_multi(false), _is_value(false),
_is_default(false), _is_deactivated(false), _is_leaf_typeless(false),
_is_invalid(false), _is_empty(false), _exists(true)
{
/* first get the def (only if path is not empty). if path is empty, i.e.,
* "root", treat it as an intermediate node.
*/
if (path_comps.size() > 0) {
tr1::shared_ptr<Ctemplate> def(cstore.parseTmpl(path_comps, false));
if (def.get()) {
// got the def
if (!cstore.cfgPathExists(path_comps, active)) {
// path doesn't exist
_exists = false;
return;
}
_is_value = def->isValue();
_is_tag = def->isTag();
_is_leaf = (!_is_tag && !def->isTypeless());
_is_multi = def->isMulti();
_is_default = cstore.cfgPathDefault(path_comps, active);
_is_deactivated = cstore.cfgPathDeactivated(path_comps, active);
cstore.cfgPathGetComment(path_comps, _comment, active);
// ignore return
if (_is_leaf && _is_value) {
/* "leaf value" so recursion should never reach here. if path is
* specified by user, nothing further to do.
*/
return;
}
} else {
// not a valid node
_is_invalid = true;
return;
}
}
// handle leaf node (note path_comps must be non-empty if this is leaf)
if (_is_leaf) {
_name = path_comps[path_comps.size() - 1];
if (_is_multi) {
// multi-value node
cstore.cfgPathGetValuesDA(path_comps, _values, active, true);
// ignore return value
} else {
// single-value node
cstore.cfgPathGetValueDA(path_comps, _value, active, true);
// ignore return value
}
return;
}
// handle intermediate (typeless) or tag
if (_is_value) {
// tag value
_name = path_comps[path_comps.size() - 2];
_value = path_comps[path_comps.size() - 1];
} else {
// tag node or typeless node
_name = (path_comps.size() > 0 ? path_comps[path_comps.size() - 1] : "");
}
// check child nodes
vector<string> cnodes;
cstore.cfgPathGetChildNodesDA(path_comps, cnodes, active, true);
if (cnodes.size() == 0) {
// empty subtree. done.
vector<string> tcnodes;
cstore.tmplGetChildNodes(path_comps, tcnodes);
if (tcnodes.size() == 0) {
// typeless leaf node
_is_leaf_typeless = true;
}
_is_empty = true;
return;
}
if (!recursive) {
// nothing further to do
return;
}
// recurse
for (size_t i = 0; i < cnodes.size(); i++) {
path_comps.push(cnodes[i]);
CfgNode *cn = new CfgNode(cstore, path_comps, active, recursive);
_child_nodes.push_back(cn);
path_comps.pop();
}
}
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