Fix lack of error message on mustach issue

Change-Id: I16139c133d7031e38f4c63ff6369f1d7478fc86f
Signed-off-by: José Bollo <jose.bollo@iot.bzh>

diff --git a/src/wgtpkg-mustach.c b/src/wgtpkg-mustach.c
index 110f11b..45d94e8 100644 (file)
--- a/src/wgtpkg-mustach.c
+++ b/src/wgtpkg-mustach.c
@@ -21,10 +21,12 @@
 
 #include <stdio.h>
 #include <string.h>
+#include <errno.h>
 
 #include <json-c/json.h>
 
 #include "mustach.h"
+#include "verbose.h"
 
 #define MAX_DEPTH 256
 
@@ -321,8 +323,29 @@ static struct mustach_itf itf = {
  */
 int apply_mustach(const char *template, struct json_object *root, char **result, size_t *size)
 {
+       int rc;
        struct expl e;
+
        e.root = root;
-       return mustach(template, &itf, &e, result, size);
+       rc = mustach(template, &itf, &e, result, size);
+       if (rc < 0) {
+               static const char *msgs[] = {
+                       "SYSTEM",
+                       "UNEXPECTED_END",
+                       "EMPTY_TAG",
+                       "TAG_TOO_LONG",
+                       "BAD_SEPARATORS",
+                       "TOO_DEPTH",
+                       "CLOSING",
+                       "BAD_UNESCAPE_TAG"
+               };
+
+               rc = -(rc + 1);
+               ERROR("mustach error found: MUSTACH_ERROR_%s",
+                       rc < 0 || rc >= (int)(sizeof msgs / sizeof * msgs) ? "???" : msgs[rc]);
+               rc = -1;
+               errno = EINVAL;
+       }
+       return rc;
 }