From dd036278982fa2f56f49ac6f193d5a037f696071 Mon Sep 17 00:00:00 2001
From: Kevin Larke <kevin@larke.org>
Date: Sat, 6 Feb 2016 23:34:10 -0500
Subject: [PATCH] cmXml.h/c : Added cmXmlHasChild() and cmXmlNodeDouble().

---
 cmXml.c | 32 ++++++++++++++++++++++++++------
 cmXml.h | 19 ++++++++++++-------
 2 files changed, 38 insertions(+), 13 deletions(-)

diff --git a/cmXml.c b/cmXml.c
index c23217a..2214eb8 100644
--- a/cmXml.c
+++ b/cmXml.c
@@ -169,6 +169,7 @@ cmXmlNode_t* _cmXmlNodeAlloc( cmXml_t* p, unsigned flags, const cmChar_t* label,
   if( label != NULL )
     np->label = cmLhAllocStrN(p->heapH,label,labelN);
 
+  np->line  = p->line;
   np->flags = flags;
 
   return np;
@@ -992,14 +993,33 @@ cmXmlRC_t          cmXmlNodeDouble(const cmXmlNode_t* np, double* retRef, ...)
 
 }
 
-bool    cmXmlNodeHasChild( const cmXmlNode_t* np, const cmChar_t* label )
+bool    cmXmlNodeHasChildV( const cmXmlNode_t* np, const cmChar_t* label, va_list vl )
 {
-  const cmXmlNode_t* cnp = np->children;
-  for(; cnp!=NULL; cnp=cnp->sibling)
-    if( cmTextCmp(cnp->label,label) == 0 )
-      return true;
+  const cmChar_t* str = NULL;
 
-  return false;
+  // get next label to match
+  while( (str = va_arg(vl,const cmChar_t*)) == NULL )
+  {
+    np = np->children;
+    for(; np!=NULL; np=np->sibling)
+      if( cmTextCmp(np->label,label) == 0 )
+        break;
+
+    // if the end of the child list was encountered - with no match
+    if( np == NULL )
+      return false;
+  }
+
+  return true;
+}
+
+bool    cmXmlNodeHasChild( const cmXmlNode_t* np, const cmChar_t* label, ... )
+{
+  va_list vl;
+  va_start(vl,label);
+  bool fl = cmXmlNodeHasChildV(np,label,vl);
+  va_end(vl);
+  return fl;
 }
 
 
diff --git a/cmXml.h b/cmXml.h
index a3002a4..343139f 100644
--- a/cmXml.h
+++ b/cmXml.h
@@ -35,6 +35,7 @@ extern "C" {
   
   typedef struct cmXmlNode_str
   {
+    unsigned              line;     // line number
     unsigned              flags;    // See k???XmlFl
     
     const cmChar_t*       label;    // node label
@@ -62,26 +63,30 @@ extern "C" {
   const cmXmlNode_t* cmXmlRoot(  cmXmlH_t h );
   void               cmXmlPrint( cmXmlH_t h, cmRpt_t* rpt );
 
-  const cmXmlNode_t* cmXmlSearch( const cmXmlNode_t* np, const cmChar_t* label, const cmXmlAttr_t* attrV, unsigned attrN );
+  const cmXmlNode_t* cmXmlSearch(     const cmXmlNode_t* np, const cmChar_t* label, const cmXmlAttr_t* attrV, unsigned attrN );
   const cmXmlAttr_t* cmXmlFindAttrib( const cmXmlNode_t* np, const cmChar_t* label );
 
   cmXmlRC_t          cmXmlAttrInt(  const cmXmlNode_t* np, const cmChar_t* attrLabel, int* retRef );
   cmXmlRC_t          cmXmlAttrUInt( const cmXmlNode_t* np, const cmChar_t* attrLabel, unsigned* retRef );
   
   // Return the data value for a node or attributes.
-  // List Syntax: node-label-0, node-label-1, NULL, attr-label-0 attr-label-1 
+  // Terminate node label list with NULL.
   const cmChar_t*    cmXmlNodeValueV( const cmXmlNode_t* np, va_list vl );
   const cmChar_t*    cmXmlNodeValue( const cmXmlNode_t* np, ... );
 
-  cmXmlRC_t          cmXmlNodeIntV(    const cmXmlNode_t* np, int* retRef, va_list vl );
+  // Terminate node label list with NULL.
+  cmXmlRC_t          cmXmlNodeIntV(    const cmXmlNode_t* np, int*      retRef, va_list vl );
   cmXmlRC_t          cmXmlNodeUIntV(   const cmXmlNode_t* np, unsigned* retRef, va_list vl );
   cmXmlRC_t          cmXmlNodeDoubleV( const cmXmlNode_t* np, double*   retRef, va_list vl );
 
-  cmXmlRC_t          cmXmlNodeInt(   const cmXmlNode_t* np, int* retRef, ... );
+  // Terminate node label list with NULL.
+  cmXmlRC_t          cmXmlNodeInt(   const cmXmlNode_t* np, int*      retRef, ... );
   cmXmlRC_t          cmXmlNodeUInt(  const cmXmlNode_t* np, unsigned* retRef, ... );
-  cmXmlRC_t          cmXmlNodeDouble(const cmXmlNode_t* np, double* retRef, ...);
-  
-  bool               cmXmlNodeHasChild( const cmXmlNode_t* np, const cmChar_t* label );
+  cmXmlRC_t          cmXmlNodeDouble(const cmXmlNode_t* np, double*   retRef, ... );
+
+  // Terminate node label list with NULL.
+  bool               cmXmlNodeHasChildV(const cmXmlNode_t* np, const cmChar_t* label, va_list vl );
+  bool               cmXmlNodeHasChild( const cmXmlNode_t* np, const cmChar_t* label, ... );
 
   
   cmXmlRC_t cmXmlTest( cmCtx_t* ctx, const cmChar_t* fn );