lb-ratio/gulpfile.js

Provides a Fraction, Rational, and Ratio object for javascript.

var del = require("del");
var fs = require("fs");
var info = require("./package.json");
var gulp = require("gulp");
var jshint = require("gulp-jshint");
var stylish = require('jshint-stylish');
var prettify = require("gulp-jsbeautifier");
var rename = require("gulp-rename");
var template = require("gulp-template");
var uglify = require("gulp-uglify");
var wrapper = require("gulp-wrapper");
var yuidoc = require("gulp-yuidoc");

var paths = {};
paths.src = "./lib/*.js";
paths.docDir = "./doc/";
paths.dist = "./dist";
paths.distRatio = paths.dist + "/Ratio-VERSION.js".replace("VERSION", info.version);
paths.libRatio = "./lib/Ratio-beta.js";
paths.packageInfo = "./package.json";
paths.readme = "./readme.md";
paths.index = "./examples/index.html";
paths.tests = "./test/js/**/*.js";
paths.gulpfile = "./gulpfile.js";

var readAndUpdateVersion = function(filePath, updateFunc) {
  console.log("Updating version number in %s", filePath);
  var file = fs.readFileSync(filePath).toString(),
    updatedFile = updateFunc(file, info.version);
  fs.writeFileSync(filePath, updatedFile);
};

var updateRatioFilePathFunc = function(str, version) {
  return ("" + str).replace(/(\/Ratio-)([\d.]+[^\.]+)(.js)/, "$1" + version + "$3");
};

gulp.task("makeMin", ["makeDist"], function() {
  gulp.src(paths.distRatio)
    .pipe(uglify())
    .pipe(wrapper({
      header: "/*Ratio.js version:" + info.version + " by Larry Battle*/\n"
    }))
    .pipe(rename({
      suffix: ".min"
    }))
    .pipe(gulp.dest(paths.dist));
});

gulp.task("makeDist", ["lint"], function() {
  del([paths.dist], function() {
    gulp.src(paths.libRatio)
      .pipe(rename({
        basename: "Ratio-",
        suffix: info.version
      }))
      .pipe(template(info))
      .pipe(gulp.dest(paths.dist));
  });
});

gulp.task("buildDoc", function() {
  del([paths.docDir], function() {
    gulp.src(paths.distRatio)
      .pipe(yuidoc())
      .pipe(gulp.dest(paths.docDir));
  });
});

gulp.task("format", function() {
  gulp.src([paths.src, paths.tests, paths.gulpfile], {
    base: "./"
  })
    .pipe(prettify({
      js: {
        indentSize: 2
      }
    }))
    .pipe(gulp.dest("./"));
});

gulp.task("lint", function(cb) {
  return gulp.src([paths.src])
    .pipe(jshint())
    .pipe(jshint.reporter(stylish))
    .pipe(jshint.reporter("fail"));
});

gulp.task("updateLinks", function() {
  readAndUpdateVersion(paths.readme, function(str, version) {
    return ("" + str).replace(/("ratioVersion"\s*>)([^<]+)(<\/)/, "$1" + version + "$3");
  });
  "packageInfo,readme,index".split(",").forEach(function(pathName) {
    readAndUpdateVersion(paths[pathName], updateRatioFilePathFunc);
  });
});

gulp.task("build", ["lint", "format", "makeDist", "makeMin", "buildDoc", "updateLinks"]);