eit: Add drop-down list for selecting xmltv scraper configuration. (#4626)

Previously you had to enter text in the "scraper configuration to use"
drop-down on EPG grabber modules/Over the air module.

Now we populate a drop-down selection box by loading the configurations
and then getting their names. This is slight overhead compared to just
fb_scandir, but it is only used briefly during GUI configuration and
has the benefit of listing configurations that are valid in case the
user modified the configuration files and caused it to be invalid.

Issue: #4626

diff --git a/src/epggrab/module.c b/src/epggrab/module.c
index a37d2cdbf7a05cd9fd7878a0a2859e97815f094d..af352cb5fd16f131a3e28bb5dae19be3fbf66e95 100644 (file)
--- a/src/epggrab/module.c
+++ b/src/epggrab/module.c
@@ -104,6 +104,34 @@ static int epggrab_mod_class_type_set(void *o, const void *v)
   return 0;
 }
 
+static htsmsg_t *
+epggrab_module_ota_scrapper_config_list ( void *o, const char *lang )
+{
+  htsmsg_t *m = htsmsg_create_list();
+  htsmsg_t *e = htsmsg_create_map();
+  htsmsg_add_str(e, "key", "");
+  htsmsg_add_str(e, "val", tvh_gettext_lang(lang, N_("Use default configuration")));
+  htsmsg_add_msg(m, NULL, e);
+  htsmsg_t *config;
+  /* We load all the config so we can get the names of ones that are
+   * valid. This is a bit of overhead but we are rarely called since
+   * this is for the configuration GUI drop-down.
+   */
+  if((config = hts_settings_load_r(1, "epggrab/eit/scrape")) != NULL) {
+    htsmsg_field_t *f;
+    HTSMSG_FOREACH(f, config) {
+      e = htsmsg_create_map();
+      htsmsg_add_str(e, "key", f->hmf_name);
+      htsmsg_add_str(e, "val", f->hmf_name);
+      htsmsg_add_msg(m, NULL, e);
+    }
+    htsmsg_destroy(config);
+  }
+  return m;
+}
+
+
+
 CLASS_DOC(epggrabber_modules)
 PROP_DOC(epggrabber_priority)
 
@@ -262,6 +290,7 @@ const idclass_t epggrab_mod_ota_scraper_class = {
                    "\"uk\" (without the quotes)."
                   ),
       .off    = offsetof(epggrab_module_ota_scraper_t, scrape_config),
+      .list   = epggrab_module_ota_scrapper_config_list,
       .group  = 2,
     },
     {