Start of a 'wordlist' type for the config subsystem

wordlists are simple not quoted words delimited by semicolon, tab, space or
commas. Some special functions will allow to access each of this words by
index etc.

src/backend/config.h

@@ -217,7 +217,6 @@ lumiera_config_setdefault (const char* line);
 LUMIERA_CONFIG_TYPES
 #undef LUMIERA_CONFIG_TYPE
 
-
 /**
  * Wordlists
  * Wordlists are lists of single words delimited by any of " \t,;".

src/backend/config_wordlist.c

@@ -33,6 +33,9 @@ extern LumieraConfig lumiera_global_config;
 
 //TODO: System includes//
 
+/**
+ * return nth word of a wordlist
+ */
 const char*
 lumiera_config_wordlist_get_nth (const char* key, unsigned nth)
 {
@@ -196,12 +199,11 @@ lumiera_config_wordlist_append (const char* key, const char** value, unsigned nt
 {
 }
 
+
 LumieraConfigitem
 lumiera_config_wordlist_preprend (const char* key, const char** value, unsigned nth)
 {
 }
-
-
 #endif
 
 

tests/22config_highlevel.tests

@@ -222,3 +222,25 @@ TEST "wordlist add to empty list, same" wordlist_add 'foo.bar' '' same same << E
 out: ' same'
 out: ' same'
 END
+
+
+TEST "wordlist get item from empty list should fail" wordlist_get_nth 'foo.bar' '' 0 << END
+out: 'NULL'
+END
+
+TEST "wordlist get item past end should fail" wordlist_get_nth 'foo.bar' 'baz barf gnarf' 3 << END
+out: 'NULL'
+END
+
+TEST "wordlist get first item" wordlist_get_nth 'foo.bar' 'baz barf gnarf' 0 << END
+out: 'baz'
+END
+
+TEST "wordlist get last item" wordlist_get_nth 'foo.bar' 'baz barf; gnarf' 2 << END
+out: 'gnarf'
+END
+
+TEST "wordlist get middle" wordlist_get_nth 'foo.bar' 'baz barf, gnarf' 1 << END
+out: 'barf'
+END
+

tests/backend/test-config.c

@@ -409,5 +409,4 @@ TEST ("wordlist_add")
 }
 
 
-
 TESTS_END