add png optimizer

package.json

@@ -2,7 +2,7 @@
   "name": "squid",
   "description": "build utility for compiling coffee, stylus, jade files",
   "author": "Pierre-Guillaume Herveou <pgherveou@gmail.com>",
-  "version": "0.1.4",
+  "version": "0.1.6",
   "homepage": "http://pgherveou.github.com/squid/",
   "repository": {
     "type": "git",
@@ -17,6 +17,8 @@
     "coffee-script"    : "1.x",
     "jade"             : "0.x",
     "handlebars"       : "1.x",
+    "csslint"          : "0.x",
+    "optipng"          : "0.x",
     "findr"            : "0.x",
     "mkdirp"           : "0.x",
     "moment"           : "2.x",

src/lib/builders/Builder.coffee

@@ -33,7 +33,7 @@ exports.Builder = class Builder
     @srcDir  = path.resolve @config.src
     @outDir  = path.resolve @config.out
 
-  buildPath: (source, outDir) =>
+  buildPath: (source, outDir = @outDir) =>
     ext      = @outExt or path.extname(source)
     fileName = path.basename(source, path.extname(source)) + @outExt
     fileDir  = path.dirname(source)
@@ -51,10 +51,10 @@ exports.Builder = class Builder
 
   # if new, write code in file
   write: (newCode, src, cb) ->
-    file = @buildPath src, @outDir
+    file = @buildPath src
     fs.readFile file, 'utf8', (err, oldCode) =>
       return cb null, file, null if newCode is oldCode
-      file = @buildPath src, @outDir
+      file = @buildPath src
       mkdirp path.dirname(file), 0o0755, (err) =>
         return cb new BuildError(file, err) if err
         fs.writeFile file, newCode, (err) =>

src/lib/builders/Css.coffee

@@ -0,0 +1,24 @@
+path                  = require 'path'
+{CSSLint}             = require 'csslint'
+{Builder, BuildError} = require './Builder'
+
+module.exports = class CSSBuilder extends Builder
+
+  fileExt: '.css'
+  outExt : '.css'
+
+  constructor: ->
+    super
+    @cssConfig = @config.builders.css
+
+  _build: (file, code, refresh, cb) ->
+    error = CSSLint.verify(code).messages
+      .filter((msg)-> msg.type is 'error')
+      .map((msg) -> "line #{msg.line}: #{msg.message}")
+      .join '\n'
+
+    return cb new BuildError(file, error) if error
+    @write code, file, cb
+
+
+

src/lib/builders/Png.coffee

@@ -0,0 +1,27 @@
+path                  = require 'path'
+fs                    = require 'fs'
+mkdirp                = require 'mkdirp'
+OptiPng               = require 'optipng'
+{Builder, BuildError} = require './Builder'
+
+optimizer = new OptiPng
+
+module.exports = class CSSBuilder extends Builder
+
+  fileExt: '.png'
+  outExt : '.png'
+
+  constructor: ->
+    super
+    @pngConfig = @config.builders.png
+
+  build: (src, refresh, cb) ->
+    out = @buildPath src
+    mkdirp path.dirname(out), 0o0755, (err) =>
+      return cb new BuildError(out, err) if err
+      srcStream = fs.createReadStream src
+      outStream = fs.createWriteStream out
+      srcStream.pipe(optimizer).pipe(outStream)
+      outStream.on 'close', cb
+
+

src/lib/builders/index.coffee

@@ -4,4 +4,6 @@ builders.push new require './Coffee'
 builders.push new require './Stylus'
 builders.push new require './Jade'
 builders.push new require './Json'
-builders.push new require './Handlebars'
+builders.push new require './Handlebars'
+builders.push new require './Css'
+builders.push new require './Png'

src/lib/config.coffee

@@ -16,6 +16,7 @@ config =
     js: {}
     json: {}
     coffee: {}
+    css: {}
     handlebars:
       wrap: 'commonJS'
     jade:

src/lib/project.coffee

@@ -51,21 +51,22 @@ class Project extends EventEmitter
       @emit('build', src) if not err and newCode
 
   liveBuildAll: (fileItems, cb) =>
-    files = (file for file of fileItems)
+    files = Object.keys fileItems
     errors = []
 
-    for file in files
+    files.forEach (file) =>
       if builder = @buildFactory.get(file)
         code = fs.readFileSync file, 'utf8'
         builder.scan file, code
 
     # build all
     buildFile = (file, cb) =>
-      builder = @buildFactory.get(file)
-      return cb null unless builder
-      builder.build file, false, (err) ->
-        errors.push err if err
-        cb null
+      return cb null unless builder = @buildFactory.get(file)
+      fs.stat builder.buildPath(file), (err, stat) ->
+        return cb null if not err and stat.mtime.getTime() > fileItems[file].mtime.getTime()
+        builder.build file, false, (err) ->
+          errors.push err if err
+          cb null
 
     async.forEach files, buildFile, =>
       cb(errors if errors.length)

src/tests/test-css.css

@@ -0,0 +1 @@
+.foo {font-size: 12px;}

tests/test-css.css

@@ -0,0 +1 @@
+.foo {font-size: 12px;}

tests/test-jade.js

@@ -1,4 +1,5 @@
 jade = require('jade');
+if (jade.runtime) {jade = jade.runtime;}
 module.exports = function anonymous(locals, attrs, escape, rethrow, merge) {
 attrs = attrs || jade.attrs; escape = escape || jade.escape; rethrow = rethrow || jade.rethrow; merge = merge || jade.merge;
 var buf = [];