--- /dev/null
+var chalk = require('chalk');
+var path = require('path');
+var symbols = require('log-symbols');
+var _ = require('lodash');
+var util = require('./util');
+
+module.exports = function(opts) {
+ var options = opts || {};
+ var sortByPosition = (typeof options.sortByPosition !== 'undefined') ? options.sortByPosition : true;
+ var positionless = options.positionless || 'first';
+
+ return function(input) {
+ var messages = input.messages;
+ var source = input.source;
+
+ if (!messages.length) return '';
+
+ var orderedMessages = _.sortBy(
+ messages,
+ function(m) {
+ if (!m.line) return 1;
+ if (positionless === 'any') return 1;
+ if (positionless === 'first') return 2;
+ if (positionless === 'last') return 0;
+ },
+ function(m) {
+ if (!sortByPosition) return 1;
+ return m.line;
+ },
+ function(m) {
+ if (!sortByPosition) return 1;
+ return m.column;
+ }
+ );
+
+ var output = '\n';
+
+ if (source) {
+ output += chalk.bold.underline(logFrom(source)) + '\n';
+ }
+
+ orderedMessages.forEach(function(w) {
+ output += messageToString(w) + '\n';
+ });
+
+ return output;
+
+ function messageToString(message) {
+ var location = util.getLocation(message);
+ var str = '';
+
+ if (location.line) {
+ str += chalk.bold(location.line);
+ }
+
+ if (location.column) {
+ str += chalk.bold(':' + location.column)
+ }
+
+ if (location.line || location.column) {
+ str += '\t';
+ }
+
+ if (!options.noIcon && message.type === 'warning') {
+ str += chalk.yellow(symbols.warning + ' ');
+ }
+
+ str += message.text;
+ if (!options.noPlugin) {
+ str += chalk.yellow(' [' + message.plugin + ']');
+ }
+ return str;
+ }
+
+ function logFrom(fromValue) {
+ if (fromValue.charAt(0) === '<') return fromValue;
+ return path.relative(process.cwd(), fromValue).split(path.sep).join('/');
+ }
+ };
+};