Initial community commit

Src/Wasabi/bfc/parse/hierarchyparser.cpp

@@ -0,0 +1,99 @@
+#include "precomp_wasabi_bfc.h"
+#include "hierarchyparser.h"
+#include <bfc/nsguid.h>
+#include <wchar.h>
+// This uses an AMAZINGLY inefficient algorithm!  woo hoo!
+
+HierarchyParser::HierarchyParser(const wchar_t *str, const wchar_t *_sibling, const wchar_t *_escape, const wchar_t *_parent_open, const wchar_t *_parent_close) {
+  // Create a new rootnode.
+  rootnode = new HPNode(str);
+  // Parse the rootnode's contents into the rootnode's children.
+  HierarchyParser downparse(rootnode, _sibling, _escape, _parent_open, _parent_close);
+  // Set the actual name of the rootnode ("")
+  (*rootnode)() = L"";
+  // Mark that this was our allocation
+  myalloc = 1;
+}
+
+HierarchyParser::~HierarchyParser() {
+  // If we alloc, we must delete.
+  if (myalloc) {
+    delete rootnode;
+  }
+}
+
+HPNode *HierarchyParser::findGuid(GUID g) {
+  return NULL;
+}
+
+HPNode *HierarchyParser::findString(const wchar_t *str) {
+  return NULL;
+}
+
+HierarchyParser::HierarchyParser(HPNode *_rootnode, const wchar_t *_sibling, const wchar_t *_escape, const wchar_t *_parent_open, const wchar_t *_parent_close) {
+  // We did not alloc, we should not delete.
+  rootnode = _rootnode;
+  sibling = _sibling;
+  escape = _escape;
+  parent_open = _parent_open;
+  parent_close = _parent_close;
+
+  myalloc = 0;
+
+  const wchar_t *parsestr = (*rootnode)();
+
+  size_t i, length = wcslen(parsestr), depth = 0;
+
+  StringW curr_sibling;
+
+  for (i = 0; i < length; i++ ) {
+    wchar_t c = parsestr[i];
+
+    if (isEscape(c)) {
+      // always add the next character
+      curr_sibling += parsestr[++i];  
+    } else if (isSibling(c)) {
+      // if we're not inside someone else,
+      if (!depth) {
+        // okay, we're done with the current sibling.  ship him off.
+        processSibling(curr_sibling);
+        // on to the next sibling!
+        curr_sibling = L"";
+      } else {
+        curr_sibling += c;
+      }      
+    } else if (isParentOpen(c)) {
+      // increment depth
+      curr_sibling += c;
+      depth++;
+    } else if (isParentClose(c)) {
+      // decrement depth
+      curr_sibling += c;
+      depth--;
+    } else {
+      curr_sibling += c;
+    }
+  }
+
+  // If there is anything left over, process it as a sibling.
+  if (curr_sibling.len()) {
+    processSibling(curr_sibling);
+  }
+}
+
+void HierarchyParser::processSibling(const wchar_t *sibstr) {
+  StringW curr_sibling = sibstr;
+  // slice the name out of the front of the string.
+  StringW sibling_name = curr_sibling.lSpliceChar(parent_open);
+  // curr_sibling will contain the children of this sibling (or nothing).
+  curr_sibling.rSpliceChar(parent_close);
+  // create a new child for our root node to contain the sibling's child info
+  HPNode *child = new HPNode(curr_sibling, rootnode);
+  // parse the child hierarchically for its children
+  HierarchyParser childparser(child, sibling, escape, parent_open, parent_close);
+  // once parsed. set its name to be this sibling
+  (*child)() = sibling_name;
+  // and lastly add him as a child to the root node.
+  rootnode->addChild(child);
+}
+