[utils] Added basename and dirname #19

openwisp-config/files/lib/openwisp/utils.lua

@@ -24,6 +24,23 @@ function split(input, sep)
     return t
 end
 
+function basename(path)
+    local parts = split(path, '/')
+    return parts[table.getn(parts)]
+end
+
+function dirname(path)
+    local parts = split(path, '/')
+    local path = '/'
+    local length = table.getn(parts)
+    for i, part in ipairs(parts) do
+        if i < length then
+            path = path..part..'/'
+        end
+    end
+    return path
+end
+
 function add_values_to_set(set, values)
     for i, el in pairs(values) do
         set[el] = true

openwisp-config/tests/test_utils.lua

@@ -275,4 +275,13 @@ function TestUtils.test_split()
     luaunit.assertEquals(split('a/b/c', '/'), t)
 end
 
+function TestUtils.test_basename()
+    luaunit.assertEquals(basename('/etc/config/network'), 'network')
+    luaunit.assertEquals(basename('./profile'), 'profile')
+end
+
+function TestUtils.test_dirname()
+    luaunit.assertEquals(dirname('/etc/config/network'), '/etc/config/')
+end
+
 os.exit(luaunit.LuaUnit.run())