module.exports = function(environment) { var Dimension = require('../less/tree/dimension'), Expression = require('../less/tree/expression'), functionRegistry = require('./../less/functions/function-registry'); function imageSize(functionContext, filePathNode) { var filePath = filePathNode.value; var currentFileInfo = functionContext.currentFileInfo; var currentDirectory = currentFileInfo.rewriteUrls ? currentFileInfo.currentDirectory : currentFileInfo.entryPath; var fragmentStart = filePath.indexOf('#'); var fragment = ''; if (fragmentStart !== -1) { fragment = filePath.slice(fragmentStart); filePath = filePath.slice(0, fragmentStart); } var fileManager = environment.getFileManager(filePath, currentDirectory, functionContext.context, environment, true); if (!fileManager) { throw { type: 'File', message: 'Can not set up FileManager for ' + filePathNode }; } var fileSync = fileManager.loadFileSync(filePath, currentDirectory, functionContext.context, environment); if (fileSync.error) { throw fileSync.error; } var sizeOf = require('image-size'); return sizeOf(fileSync.filename); } var imageFunctions = { 'image-size': function(filePathNode) { var size = imageSize(this, filePathNode); return new Expression([ new Dimension(size.width, 'px'), new Dimension(size.height, 'px') ]); }, 'image-width': function(filePathNode) { var size = imageSize(this, filePathNode); return new Dimension(size.width, 'px'); }, 'image-height': function(filePathNode) { var size = imageSize(this, filePathNode); return new Dimension(size.height, 'px'); } }; functionRegistry.addMultiple(imageFunctions); };