From 91cfb24bbbbd950ff443d944bd0fa2173a9a83fa Mon Sep 17 00:00:00 2001
From: Adam Sutton <dev@adamsutton.me.uk>
Date: Fri, 16 Aug 2013 13:47:41 +0100
Subject: [PATCH] htsmsg: added automatic conversion from string to msg/list

This is done on request if the string can be JSON deserialized. This is
useful for the common API where the webui will be sending in serialized
strings and saves having the special case "args" field.

For things like HTSP, which deal directly in htsmsg, the fields should
already have been converted to the right formats etc...
---
 src/htsmsg.c | 45 +++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 41 insertions(+), 4 deletions(-)

diff --git a/src/htsmsg.c b/src/htsmsg.c
index 055455bf..2fb97a45 100644
--- a/src/htsmsg.c
+++ b/src/htsmsg.c
@@ -25,8 +25,11 @@
 #include <string.h>
 #include "htsmsg.h"
 #include "misc/dbl.h"
+#include "htsmsg_json.h"
 
 static void htsmsg_clear(htsmsg_t *msg);
+static htsmsg_t *
+htsmsg_field_get_msg ( htsmsg_field_t *f, int islist );
 
 /**
  *
@@ -606,10 +609,16 @@ htsmsg_get_map(htsmsg_t *msg, const char *name)
 {
   htsmsg_field_t *f;
 
-  if((f = htsmsg_field_find(msg, name)) == NULL || f->hmf_type != HMF_MAP)
+  if((f = htsmsg_field_find(msg, name)) == NULL)
     return NULL;
 
-  return &f->hmf_msg;
+  return htsmsg_field_get_map(f);
+}
+
+htsmsg_t *
+htsmsg_field_get_map(htsmsg_field_t *f)
+{
+  return htsmsg_field_get_msg(f, 0);
 }
 
 /**
@@ -661,10 +670,38 @@ htsmsg_get_list(htsmsg_t *msg, const char *name)
 {
   htsmsg_field_t *f;
 
-  if((f = htsmsg_field_find(msg, name)) == NULL || f->hmf_type != HMF_LIST)
+  if((f = htsmsg_field_find(msg, name)) == NULL)
     return NULL;
 
-  return &f->hmf_msg;
+  return htsmsg_field_get_list(f);
+}
+
+htsmsg_t *
+htsmsg_field_get_list ( htsmsg_field_t *f )
+{
+  return htsmsg_field_get_msg(f, 1);
+}
+
+static htsmsg_t *
+htsmsg_field_get_msg ( htsmsg_field_t *f, int islist )
+{
+  htsmsg_t *m;
+
+  /* Deserialize JSON (will keep either list or map) */
+  if (f->hmf_type == HMF_STR) {
+    if ((m = htsmsg_json_deserialize(f->hmf_str))) {
+      free((void*)f->hmf_str);
+      f->hmf_type          = m->hm_islist ? HMF_LIST : HMF_MAP;
+      f->hmf_msg.hm_islist = m->hm_islist;
+      TAILQ_MOVE(&f->hmf_msg.hm_fields, &m->hm_fields, hmf_link);
+      free(m);
+    }
+  }
+
+  if (f->hmf_type == (islist ? HMF_LIST : HMF_MAP))
+    return &f->hmf_msg;
+
+  return NULL;
 }
 
 /**