116 lines
2.8 KiB
JavaScript
116 lines
2.8 KiB
JavaScript
var utils = require('../utils')
|
|
, nodes = require('../nodes')
|
|
, readFile = require('fs').readFileSync;
|
|
|
|
/**
|
|
* Convert a .json file into stylus variables or object.
|
|
* Nested variable object keys are joined with a dash (-)
|
|
*
|
|
* Given this sample media-queries.json file:
|
|
* {
|
|
* "small": "screen and (max-width:400px)",
|
|
* "tablet": {
|
|
* "landscape": "screen and (min-width:600px) and (orientation:landscape)",
|
|
* "portrait": "screen and (min-width:600px) and (orientation:portrait)"
|
|
* }
|
|
* }
|
|
*
|
|
* Examples:
|
|
*
|
|
* json('media-queries.json')
|
|
*
|
|
* @media small
|
|
* // => @media screen and (max-width:400px)
|
|
*
|
|
* @media tablet-landscape
|
|
* // => @media screen and (min-width:600px) and (orientation:landscape)
|
|
*
|
|
* vars = json('vars.json', { hash: true })
|
|
* body
|
|
* width: vars.width
|
|
*
|
|
* @param {String} path
|
|
* @param {Boolean} [local]
|
|
* @param {String} [namePrefix]
|
|
* @api public
|
|
*/
|
|
|
|
module.exports = function(path, local, namePrefix){
|
|
utils.assertString(path, 'path');
|
|
|
|
// lookup
|
|
path = path.string;
|
|
var found = utils.lookup(path, this.options.paths, this.options.filename)
|
|
, options = (local && 'object' == local.nodeName) && local;
|
|
|
|
if (!found) {
|
|
// optional JSON file
|
|
if (options && options.get('optional').toBoolean().isTrue) {
|
|
return nodes.null;
|
|
}
|
|
throw new Error('failed to locate .json file ' + path);
|
|
}
|
|
|
|
// read
|
|
var json = JSON.parse(readFile(found, 'utf8'));
|
|
|
|
if (options) {
|
|
return convert(json, options);
|
|
} else {
|
|
oldJson.call(this, json, local, namePrefix);
|
|
}
|
|
|
|
function convert(obj, options){
|
|
var ret = new nodes.Object()
|
|
, leaveStrings = options.get('leave-strings').toBoolean();
|
|
|
|
for (var key in obj) {
|
|
var val = obj[key];
|
|
if ('object' == typeof val) {
|
|
ret.set(key, convert(val, options));
|
|
} else {
|
|
val = utils.coerce(val);
|
|
if ('string' == val.nodeName && leaveStrings.isFalse) {
|
|
val = utils.parseString(val.string);
|
|
}
|
|
ret.set(key, val);
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Old `json` BIF.
|
|
*
|
|
* @api private
|
|
*/
|
|
|
|
function oldJson(json, local, namePrefix){
|
|
if (namePrefix) {
|
|
utils.assertString(namePrefix, 'namePrefix');
|
|
namePrefix = namePrefix.val;
|
|
} else {
|
|
namePrefix = '';
|
|
}
|
|
local = local ? local.toBoolean() : new nodes.Boolean(local);
|
|
var scope = local.isTrue ? this.currentScope : this.global.scope;
|
|
|
|
convert(json);
|
|
return;
|
|
|
|
function convert(obj, prefix){
|
|
prefix = prefix ? prefix + '-' : '';
|
|
for (var key in obj){
|
|
var val = obj[key];
|
|
var name = prefix + key;
|
|
if ('object' == typeof val) {
|
|
convert(val, name);
|
|
} else {
|
|
val = utils.coerce(val);
|
|
if ('string' == val.nodeName) val = utils.parseString(val.string);
|
|
scope.add({ name: namePrefix + name, val: val });
|
|
}
|
|
}
|
|
}
|
|
};
|