CompareEngine

a simple compare engine. 中文

Installation

npm install compare-engine

Usage

    const CompareEngine = require('compare-engine');
    let engine = new CompareEngine.Engine(comparator, storage);
    engine.addInput(obj);

comparator: instance extends CompareEngine.Comparator.

storage: instance extends CompareEngine.Storage. key-value storage.

there are some comparator and storage you can use.

comparator

CompareEngine.ArticleComparator (config): comparison of different articles.

• dependencies: npm install leven@^2.1.0
• WARN: the comparison algorithm is not suitable for fast comparison, so don't use it in large-scale comparisons.

    const config = {
        // regular expression split articles, default: /[，。,\.\n]/
        split: /[，。,\.\n]/,
        // chunk min length, default: 5
        chunkMinLength: 5,
        // threshold, default: 1
        threshold: 1,
        // save n similar results, default: 1
        saveToNth: 1
    };
    let articleComparator = new CompareEngine.ArticleComparator(config);

CompareEngine.ImageComparator(): comparison of different images by phash.

• dependencies: npm install phash

  let imageComparator = new CompareEngine.ImageComparator();

storage

CompareEngine.CacheStorage (): store compare result in memory.

  let cacheStorage = new CompareEngine.CacheStorage();

CompareEngine.FileStorage (dirPath): store compare result in a directory.

• WARN: dirPath must be a string, if the dirPath not exist, it will use fs.mkdir() to create.

  let fileStorage = new CompareEngine.FileStorage('storage directory path');

License

MIT licensed

Copyright (c) 2017 jinrui