Only create thumbs / copy files if they have changed

README.md

@@ -19,8 +19,7 @@ Static HTML galleries from a list of photos & videos.
 
 ## Input
 
-Any folder with photos and videos.
-`thumbsup` supports 1 level of subfolders:
+Any folder with photos and videos. `thumbsup` supports 1 level of subfolders, where they each become a gallery.
 
 ```
 input

src/files.js

@@ -0,0 +1,26 @@
+var fs   = require('fs-extra');
+var glob = require('glob');
+
+exports.find = function(folder, ext, callback) {
+  var opts = {
+    cwd: folder,
+    nonull: false,
+    nocase: true
+  };
+  glob('**/*.{' + ext + '}', opts, callback);
+};
+
+exports.newer = function(src, dest) {
+  var srcTime = 0;
+  try {
+    var srcTime  = fs.statSync(src).ctime.getTime();
+  } catch (ex) {
+    return false;
+  }
+  try {
+    var destTime = fs.statSync(dest).ctime.getTime();
+    return srcTime > destTime;
+  } catch (ex) {
+    return true;
+  }
+};

src/galleries.js

@@ -1,7 +1,7 @@
 var _           = require('lodash');
 var fs          = require('fs');
 var path        = require('path');
-var glob        = require('glob');
+var files       = require('./files');
 
 exports.fromDisk = function(mediaPath, mediaPrefix, callback) {
 
@@ -48,7 +48,7 @@ exports.fromDisk = function(mediaPath, mediaPrefix, callback) {
     };
   }
 
-  glob('**/*.{jpg,jpeg,png,mp4,mov}', {cwd: mediaPath, nonull:false}, function (err, files) {
+  files.find(mediaPath, 'jpg,jpeg,png,mp4,mov', function (err, files) {
     var galleries = _(files)
                    .map(fileInfo)
                    .sortBy('date')

src/index.js

@@ -1,12 +1,12 @@
 var fs          = require('fs-extra');
 var path        = require('path');
-var glob        = require('glob');
 var async       = require('async');
 var pad         = require('pad');
 
 var galleries   = require('./galleries');
 var render      = require('./render');
 var thumbs      = require('./thumbs');
+var files       = require('./files');
 
 exports.build = function(opts) {
 
@@ -22,10 +22,9 @@ exports.build = function(opts) {
 
 };
 
-
 function photos(opts) {
   var thumbsFolder = path.join(path.resolve(opts.output), 'thumbs');
-  glob('**/*.{jpg,png}', {cwd: opts.input, nonull:false}, function (err, files) {
+  files.find(opts.input, 'jpg,png', function (err, files) {
     var fns = files.map(function(file) {
       return thumbs.photo.bind(this, {
         input: path.join(opts.input, file),
@@ -38,7 +37,7 @@ function photos(opts) {
 
 function videos(opts) {
   var thumbsFolder = path.join(path.resolve(opts.output), 'thumbs');
-  glob('**/*.{mp4,mov}', {cwd: opts.input, nonull:false}, function (err, files) {
+  files.find(opts.input, 'mp4,mov', function (err, files) {
     var fns = files.map(function(file) {
       return thumbs.video.bind(this, {
         input: path.join(opts.input, file),
@@ -69,7 +68,9 @@ function website(opts) {
 function support(opts) {
   var pub = path.join(__dirname, '..', 'public');
   var out = path.join(path.resolve(opts.output), 'public');
-  fs.copy(pub, out, log('Supporting files'));
+  if (files.newer(pub, out)) {
+    fs.copy(pub, out, log('Supporting files'));
+  }
 }
 
 function ext(file, newExtension) {

src/thumbs.js

@@ -3,6 +3,7 @@ var fs      = require('fs-extra');
 var path    = require('path');
 var async   = require('async');
 var gm      = require('gm');
+var files   = require('./files');
 
 
 // default thumbnail size (square)
@@ -11,6 +12,7 @@ exports.size = 100;
 // opts = input, thumbnail
 exports.photo = function(opts, callback) {
 
+  if (files.newer(opts.thumbnail, opts.input)) return callback();
   fs.mkdirpSync(path.dirname(opts.thumbnail));
 
   gm(path.resolve(opts.input))
@@ -36,6 +38,7 @@ exports.video = function(opts, callback) {
     }, next);
   };
 
+  if (files.newer(opts.thumbnail, opts.input)) return callback();
   fs.mkdirpSync(path.dirname(opts.thumbnail));
   async.series([fnVideo, fnPhoto], callback);