waffel/lib/filters.js

Static site generation done tasty.

// Generated by CoffeeScript 1.11.1
var _, cheerio, filters, lodash_filters, marked, moment, util;

_ = require('lodash');

util = require('util');

moment = require('moment');

marked = require('marked');

cheerio = require('cheerio');

lodash_filters = ['toArray', 'pluck', 'flatten', 'uniq', 'where', 'findWhere', 'compact'];

filters = {
  limit: function(array, count) {
    if (array == null) {
      array = [];
    }
    if (count == null) {
      count = 10;
    }
    return array.slice(0, count);
  },
  format: function(date, format, locale) {
    if (locale == null) {
      locale = this.options.defaultLanguage;
    }
    moment.locale(locale);
    return moment(date).format(format || this.options.dateFormat);
  },
  excerpt: function(text, size) {
    var $, words;
    if (size == null) {
      size = 200;
    }
    $ = cheerio.load(marked(text));
    text = $('p').filter(function(index, element) {
      return (element.children[0].type === 'text') || _.contains(['em', 'strong'], element.children[0].name);
    }).first().text().trim();
    if (text.length > size) {
      words = text.substring(0, size).split(' ');
      words.pop();
      return (words.join(' ')) + "…";
    } else {
      return text;
    }
  },
  toJSON: function(data) {
    return JSON.stringify(data);
  },
  inspect: function(object) {
    console.log(util.inspect(object, false, 2, true));
    return object;
  },
  top: function(data, thresh) {
    if (thresh == null) {
      thresh = 3;
    }
    data = _.flatten(data);
    data = _.reduce(data, function(memo, x) {
      if (memo[x]) {
        memo[x] = memo[x] + 1;
      } else {
        memo[x] = 1;
      }
      return memo;
    }, {});
    data = _.reduce(data, function(memo, freq, key) {
      memo.push({
        key: key,
        freq: freq
      });
      return memo;
    }, []);
    data = _.sortBy(data, function(bin) {
      return -bin.freq;
    });
    return data.slice(0, thresh).map(function(x) {
      return x.key;
    });
  },
  loc: function(data, language) {
    if (_.isArray(data)) {
      return data.map((function(_this) {
        return function(item) {
          if (item._localised) {
            return item[language] || item[_this.options.fallbackLanguage];
          } else {
            return item;
          }
        };
      })(this));
    } else if (!data._localised) {
      return data;
    } else {
      return data[language] || data[this.options.fallbackLanguage];
    }
  }
};

lodash_filters.forEach(function(m) {
  return filters[m] = _[m];
});

module.exports = filters;