From 64dae801eb7994753ba32cf943e9a471d8f955c5 Mon Sep 17 00:00:00 2001
From: paulc <paulc@acf43c95-373e-0410-b603-e72c3f656dc1>
Date: Tue, 4 May 2010 10:35:52 +0000
Subject: [PATCH] Made possible to automatically skip adding an empty value to
 a NamedList.

git-svn-id: http://yate.null.ro/svn/yate/trunk@3281 acf43c95-373e-0410-b603-e72c3f656dc1
---
 engine/NamedList.cpp |  7 ++++---
 yateclass.h          | 14 +++++++++++++-
 2 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/engine/NamedList.cpp b/engine/NamedList.cpp
index 78ebba7c..57291e10 100644
--- a/engine/NamedList.cpp
+++ b/engine/NamedList.cpp
@@ -74,10 +74,11 @@ NamedList& NamedList::addParam(NamedString* param)
     return *this;
 }
 
-NamedList& NamedList::addParam(const char* name, const char* value)
+NamedList& NamedList::addParam(const char* name, const char* value, bool emptyOK)
 {
-    XDebug(DebugInfo,"NamedList::addParam(\"%s\",\"%s\")",name,value);
-    m_params.append(new NamedString(name, value));
+    XDebug(DebugInfo,"NamedList::addParam(\"%s\",\"%s\",%s)",name,value,String::boolText(emptyOK));
+    if (emptyOK || !TelEngine::null(value))
+	m_params.append(new NamedString(name, value));
     return *this;
 }
 
diff --git a/yateclass.h b/yateclass.h
index ccbc3349..872b34e9 100644
--- a/yateclass.h
+++ b/yateclass.h
@@ -3285,6 +3285,7 @@ public:
     /**
      * Add a named string to the parameter list.
      * @param param Parameter to add
+     * @return Reference to this NamedList
      */
     NamedList& addParam(NamedString* param);
 
@@ -3292,12 +3293,15 @@ public:
      * Add a named string to the parameter list.
      * @param name Name of the new string
      * @param value Value of the new string
+     * @param emptyOK True to always add parameter, false to skip empty values
+     * @return Reference to this NamedList
      */
-    NamedList& addParam(const char* name, const char* value);
+    NamedList& addParam(const char* name, const char* value, bool emptyOK = true);
 
     /**
      * Set a named string in the parameter list.
      * @param param Parameter to set or add
+     * @return Reference to this NamedList
      */
     NamedList& setParam(NamedString* param);
 
@@ -3305,6 +3309,7 @@ public:
      * Set a named string in the parameter list.
      * @param name Name of the string
      * @param value Value of the string
+     * @return Reference to this NamedList
      */
     NamedList& setParam(const char* name, const char* value);
 
@@ -3312,12 +3317,14 @@ public:
      * Clears all instances of a named string in the parameter list.
      * @param name Name of the string to remove
      * @param childSep If set clears all child parameters in format name+childSep+anything
+     * @return Reference to this NamedList
      */
     NamedList& clearParam(const String& name, char childSep = 0);
 
     /**
      * Remove a specific parameter
      * @param param Pointer to parameter to remove
+     * @return Reference to this NamedList
      */
     NamedList& clearParam(NamedString* param);
 
@@ -3326,12 +3333,14 @@ public:
      * @param original NamedList to copy the parameter from
      * @param name Name of the string to copy or clear
      * @param childSep If set copies all child parameters in format name+childSep+anything
+     * @return Reference to this NamedList
      */
     NamedList& copyParam(const NamedList& original, const String& name, char childSep = 0);
 
     /**
      * Copy all parameters from another NamedList, does not clear list first
      * @param original NamedList to copy the parameters from
+     * @return Reference to this NamedList
      */
     NamedList& copyParams(const NamedList& original);
 
@@ -3340,6 +3349,7 @@ public:
      * @param original NamedList to copy the parameters from
      * @param list List of objects (usually String) whose name (blanks stripped) is used as parameters names
      * @param childSep If set copies all child parameters in format name+childSep+anything
+     * @return Reference to this NamedList
      */
     NamedList& copyParams(const NamedList& original, ObjList* list, char childSep = 0);
 
@@ -3348,6 +3358,7 @@ public:
      * @param original NamedList to copy the parameter from
      * @param list Comma separated list of parameters to copy or clear
      * @param childSep If set copies all child parameters in format name+childSep+anything
+     * @return Reference to this NamedList
      */
     NamedList& copyParams(const NamedList& original, const String& list, char childSep = 0);
 
@@ -3355,6 +3366,7 @@ public:
      * Copy subparameters from another list
      * @param original Named list to copy parameters from
      * @param prefix Prefix to match and remove from parameter names, must not be NULL
+     * @return Reference to this NamedList
      */
     NamedList& copySubParams(const NamedList& original, const String& prefix);