100 lines
2.9 KiB
C++
100 lines
2.9 KiB
C++
#include "precomp_wasabi_bfc.h"
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#include "hierarchyparser.h"
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#include <bfc/nsguid.h>
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#include <wchar.h>
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// This uses an AMAZINGLY inefficient algorithm! woo hoo!
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HierarchyParser::HierarchyParser(const wchar_t *str, const wchar_t *_sibling, const wchar_t *_escape, const wchar_t *_parent_open, const wchar_t *_parent_close) {
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// Create a new rootnode.
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rootnode = new HPNode(str);
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// Parse the rootnode's contents into the rootnode's children.
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HierarchyParser downparse(rootnode, _sibling, _escape, _parent_open, _parent_close);
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// Set the actual name of the rootnode ("")
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(*rootnode)() = L"";
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// Mark that this was our allocation
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myalloc = 1;
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}
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HierarchyParser::~HierarchyParser() {
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// If we alloc, we must delete.
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if (myalloc) {
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delete rootnode;
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}
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}
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HPNode *HierarchyParser::findGuid(GUID g) {
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return NULL;
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}
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HPNode *HierarchyParser::findString(const wchar_t *str) {
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return NULL;
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}
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HierarchyParser::HierarchyParser(HPNode *_rootnode, const wchar_t *_sibling, const wchar_t *_escape, const wchar_t *_parent_open, const wchar_t *_parent_close) {
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// We did not alloc, we should not delete.
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rootnode = _rootnode;
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sibling = _sibling;
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escape = _escape;
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parent_open = _parent_open;
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parent_close = _parent_close;
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myalloc = 0;
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const wchar_t *parsestr = (*rootnode)();
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size_t i, length = wcslen(parsestr), depth = 0;
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StringW curr_sibling;
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for (i = 0; i < length; i++ ) {
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wchar_t c = parsestr[i];
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if (isEscape(c)) {
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// always add the next character
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curr_sibling += parsestr[++i];
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} else if (isSibling(c)) {
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// if we're not inside someone else,
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if (!depth) {
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// okay, we're done with the current sibling. ship him off.
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processSibling(curr_sibling);
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// on to the next sibling!
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curr_sibling = L"";
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} else {
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curr_sibling += c;
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}
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} else if (isParentOpen(c)) {
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// increment depth
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curr_sibling += c;
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depth++;
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} else if (isParentClose(c)) {
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// decrement depth
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curr_sibling += c;
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depth--;
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} else {
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curr_sibling += c;
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}
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}
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// If there is anything left over, process it as a sibling.
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if (curr_sibling.len()) {
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processSibling(curr_sibling);
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}
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}
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void HierarchyParser::processSibling(const wchar_t *sibstr) {
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StringW curr_sibling = sibstr;
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// slice the name out of the front of the string.
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StringW sibling_name = curr_sibling.lSpliceChar(parent_open);
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// curr_sibling will contain the children of this sibling (or nothing).
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curr_sibling.rSpliceChar(parent_close);
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// create a new child for our root node to contain the sibling's child info
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HPNode *child = new HPNode(curr_sibling, rootnode);
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// parse the child hierarchically for its children
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HierarchyParser childparser(child, sibling, escape, parent_open, parent_close);
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// once parsed. set its name to be this sibling
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(*child)() = sibling_name;
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// and lastly add him as a child to the root node.
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rootnode->addChild(child);
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}
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