3 module.exports = function defFunc (ajv) {
5 trimLeft: function (value) {
6 return value.replace(/^[\s]+/, '');
8 trimRight: function (value) {
9 return value.replace(/[\s]+$/, '');
11 trim: function (value) {
14 toLowerCase: function (value) {
15 return value.toLowerCase();
17 toUpperCase: function (value) {
18 return value.toUpperCase();
20 toEnumCase: function (value, cfg) {
21 return cfg.hash[makeHashTableKey(value)] || value;
25 defFunc.definition = {
30 compile: function (schema, parentSchema) {
33 if (schema.indexOf('toEnumCase') !== -1) {
34 // build hash table to enum values
37 // requires `enum` in schema
38 if (!parentSchema.enum)
39 throw new Error('Missing enum. To use `transform:["toEnumCase"]`, `enum:[...]` is required.');
40 for (var i = parentSchema.enum.length; i--; i) {
41 var v = parentSchema.enum[i];
42 if (typeof v !== 'string') continue;
43 var k = makeHashTableKey(v);
44 // requires all `enum` values have unique keys
46 throw new Error('Invalid enum uniqueness. To use `transform:["toEnumCase"]`, all values must be unique when case insensitive.');
51 return function (data, dataPath, object, key) {
55 // apply transform in order provided
56 for (var j = 0, l = schema.length; j < l; j++)
57 data = transform[schema[j]](data, cfg);
67 'trimLeft', 'trimRight', 'trim',
68 'toLowerCase', 'toUpperCase', 'toEnumCase'
74 ajv.addKeyword('transform', defFunc.definition);
77 function makeHashTableKey (value) {
78 return value.toLowerCase();