* RESTCONF "insert" and "point" query parameters supported

* Yang Netconf leaf/leaf-list insert support
  * For "ordered-by user" leafs and leaf-lists, the insert and value/key attributes are supported according to RFC7950 Sections 7.7.9 and 7.8.6

* Fixed RESTCONF api-path leaf-list selection was not made properly

lib/clixon/clixon_xml.h

@@ -51,7 +51,7 @@
  * Types
  */
 /* Netconf operation type */
-enum operation_type{ /* edit-configo */
+enum operation_type{ /* edit-config operation */
     OP_MERGE,  /* merge config-data */
     OP_REPLACE,/* replace or create config-data */
     OP_CREATE, /* create config data, error if exist */
@@ -60,6 +60,14 @@ enum operation_type{ /* edit-configo */
     OP_NONE
 };
 
+/* Netconf insert type (see RFC7950 Sec 7.8.6) */
+enum insert_type{ /* edit-config insert */
+    INS_FIRST, 
+    INS_LAST,  
+    INS_BEFORE, 
+    INS_AFTER,  
+};
+
 enum cxobj_type {CX_ERROR=-1, 
 		 CX_ELMNT, 
 		 CX_ATTR, 
@@ -115,6 +123,7 @@ int       xml_child_nr_notype(cxobj *xn, enum cxobj_type type);
 cxobj    *xml_child_i(cxobj *xn, int i);
 cxobj    *xml_child_i_type(cxobj *xn, int i, enum cxobj_type type);
 cxobj    *xml_child_i_set(cxobj *xt, int i, cxobj *xc);
+int       xml_child_order(cxobj *xn, cxobj *xc);
 cxobj    *xml_child_each(cxobj *xparent, cxobj *xprev,  enum cxobj_type type);
 
 int       xml_child_insert_pos(cxobj *x, cxobj *xc, int i);
@@ -178,6 +187,7 @@ int       xml_body_int32(cxobj *xb, int32_t *val);
 int       xml_body_uint32(cxobj *xb, uint32_t *val);
 int       xml_operation(char *opstr, enum operation_type *op);
 char     *xml_operation2str(enum operation_type op);
+int       xml_attr_insert2val(char *instr, enum insert_type *ins);
 #if defined(__GNUC__) && __GNUC__ >= 3
 int       clicon_log_xml(int level, cxobj *x, char *format, ...)  __attribute__ ((format (printf, 3, 4)));
 #else

lib/clixon/clixon_xml_map.h

@@ -56,7 +56,6 @@ int xml_yang_validate_all(clicon_handle h, cxobj *xt, cxobj **xret);
 int xml_yang_validate_all_top(clicon_handle h, cxobj *xt, cxobj **xret);
 int xml2cvec(cxobj *xt, yang_stmt *ys, cvec **cvv0);
 int cvec2xml_1(cvec *cvv, char *toptag, cxobj *xp, cxobj **xt0);
-
 int xml_diff(yang_stmt *yspec, cxobj *x0, cxobj *x1, 	 
 	     cxobj ***first, size_t *firstlen, 
 	     cxobj ***second, size_t *secondlen, 

lib/clixon/clixon_xml_sort.h

@@ -42,7 +42,7 @@
 int xml_child_spec(cxobj *x, cxobj *xp, yang_stmt *yspec, yang_stmt **yp);
 int xml_cmp(cxobj *x1, cxobj *x2, int enm);
 int xml_sort(cxobj *x0, void *arg);
-int xml_insert(cxobj *xp, cxobj *xc);
+int xml_insert(cxobj *xp, cxobj *xc, enum insert_type ins, char *key_val);
 int xml_sort_verify(cxobj *x, void *arg);
 int match_base_child(cxobj *x0, cxobj *x1c, yang_stmt *yc, cxobj **x0cp);
 

lib/clixon/clixon_yang.h

@@ -62,7 +62,7 @@ enum rfc_6020{
     Y_BELONGS_TO,
     Y_BIT,
     Y_CASE,
-    Y_CHOICE,
+    Y_CHOICE,          /* 10 */
     Y_CONFIG,
     Y_CONTACT,
     Y_CONTAINER,
@@ -72,7 +72,7 @@ enum rfc_6020{
     Y_DEVIATION,
     Y_ENUM,
     Y_ERROR_APP_TAG,
-    Y_ERROR_MESSAGE,
+    Y_ERROR_MESSAGE,   /* 20 */
     Y_EXTENSION,
     Y_FEATURE,
     Y_FRACTION_DIGITS,
@@ -82,17 +82,17 @@ enum rfc_6020{
     Y_IMPORT,
     Y_INCLUDE,
     Y_INPUT,
-    Y_KEY,
+    Y_KEY,             /* 30 */
     Y_LEAF,
     Y_LEAF_LIST,
     Y_LENGTH,
-    Y_LIST,
+    Y_LIST, 
     Y_MANDATORY,
     Y_MAX_ELEMENTS,
     Y_MIN_ELEMENTS,
     Y_MODIFIER,
     Y_MODULE,
-    Y_MUST,
+    Y_MUST,             /* 40 */
     Y_NAMESPACE,
     Y_NOTIFICATION,
     Y_ORDERED_BY,
@@ -102,7 +102,7 @@ enum rfc_6020{
     Y_PATTERN,
     Y_POSITION,
     Y_PREFIX,
-    Y_PRESENCE,
+    Y_PRESENCE,         /* 50 */
     Y_RANGE,
     Y_REFERENCE,
     Y_REFINE,
@@ -112,7 +112,7 @@ enum rfc_6020{
     Y_RPC,
     Y_STATUS,
     Y_SUBMODULE,
-    Y_TYPE,
+    Y_TYPE,            /* 60 */
     Y_TYPEDEF,
     Y_UNIQUE,
     Y_UNITS,