Enumeration interface from Laurent.

1 files changed, 40 insertions, 0 deletions

diff --git a/src/PropSet.cxx b/src/PropSet.cxx
index 3ceceb670..573991870 100644
--- a/src/PropSet.cxx
+++ b/src/PropSet.cxx
@@ -318,6 +318,46 @@ void PropSet::Clear() {
 	}
 }
 
+// Called to initiate enumeration
+bool PropSet::GetFirst(char **key, char **val) {
+	for (int i=0; i<hashRoots; i++) {
+		for (Property *p = props[i]; p; p = p->next) {
+			if (p) {
+				*key = p->key;
+				*val = p->val;
+				enumnext = p->next; // GetNext will begin here ...
+				enumhash = i;		  // ... in this block
+				return true;
+			}
+		}
+	}
+	return false;
+}
+
+// Called to continue enumeration
+bool PropSet::GetNext(char ** key,char ** val) {
+	bool firstloop = true;
+
+	// search begins where we left it : in enumhash block
+	for (int i=enumhash; i<hashRoots; i++) {
+		if (!firstloop) 
+			enumnext=props[i]; // Begin with first property in block
+		// else : begin where we left
+		firstloop=false;
+		
+		for (Property *p = enumnext; p; p = p->next) {
+			if (p) {
+				*key = p->key;
+				*val = p->val;
+				enumnext = p->next; // for GetNext
+				enumhash = i;
+				return true;
+			}
+		}
+	}
+	return false;
+}
+
 static bool iswordsep(char ch, bool onlyLineEnds) {
 	if (!isspace(ch))
 		return false;