You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 

80 lines
2.1 KiB

'use strict';
module.exports = function defFunc (ajv) {
var transform = {
trimLeft: function (value) {
return value.replace(/^[\s]+/, '');
},
trimRight: function (value) {
return value.replace(/[\s]+$/, '');
},
trim: function (value) {
return value.trim();
},
toLowerCase: function (value) {
return value.toLowerCase();
},
toUpperCase: function (value) {
return value.toUpperCase();
},
toEnumCase: function (value, cfg) {
return cfg.hash[makeHashTableKey(value)] || value;
}
};
defFunc.definition = {
type: 'string',
errors: false,
modifying: true,
valid: true,
compile: function (schema, parentSchema) {
var cfg;
if (schema.indexOf('toEnumCase') !== -1) {
// build hash table to enum values
cfg = {hash: {}};
// requires `enum` in schema
if (!parentSchema.enum)
throw new Error('Missing enum. To use `transform:["toEnumCase"]`, `enum:[...]` is required.');
for (var i = parentSchema.enum.length; i--; i) {
var v = parentSchema.enum[i];
if (typeof v !== 'string') continue;
var k = makeHashTableKey(v);
// requires all `enum` values have unique keys
if (cfg.hash[k])
throw new Error('Invalid enum uniqueness. To use `transform:["toEnumCase"]`, all values must be unique when case insensitive.');
cfg.hash[k] = v;
}
}
return function (data, dataPath, object, key) {
// skip if value only
if (!object) return;
// apply transform in order provided
for (var j = 0, l = schema.length; j < l; j++)
data = transform[schema[j]](data, cfg);
object[key] = data;
};
},
metaSchema: {
type: 'array',
items: {
type: 'string',
enum: [
'trimLeft', 'trimRight', 'trim',
'toLowerCase', 'toUpperCase', 'toEnumCase'
]
}
}
};
ajv.addKeyword('transform', defFunc.definition);
return ajv;
function makeHashTableKey (value) {
return value.toLowerCase();
}
};