Updates, Improvements, and Fixes

* Moved scripts / runner to separate package allows future replacement with PS Plugin. * Fixed issues with Refresh and removed "layer" function. * Added github documentation via godocdown. * Reduced number of calls to Panic. * Updated Tests * Updated documentation. * Fixed warnings. * .gitignore now ignores .test and .out files.
2025-12-29 18:47:38 -05:00 · 2018-06-18 23:51:52 -04:00
parent 47f24275b1
commit 206b94dcac
43 changed files with 450 additions and 298 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,4 @@

 data/
+*.test
+*.out
--- a/.godocdown.template
+++ b/.godocdown.template
@@ -0,0 +1,9 @@
+# {{ .Name }}
+[![GoDoc](https://godoc.org/github.com/sbrow/{{ .Name }}?status.svg)](https://godoc.org/github.com/sbrow/{{ .Name }}) [![Build Status](https://travis-ci.org/sbrow/{{ .Name }}.svg?branch=master)](https://travis-ci.org/sbrow/{{ .Name }}) [![Coverage Status](https://coveralls.io/repos/github/sbrow/{{ .Name }}/badge.svg?branch=master)](https://coveralls.io/github/sbrow/{{ .Name }}?branch=master) [![Go Report Card](https://goreportcard.com/badge/github.com/sbrow/{{ .Name }})](https://goreportcard.com/report/github.com/sbrow/{{ .Name }})
+
+{{ .EmitSynopsis }}
+
+## Installation
+```bash
+$ go get -u {{ .ImportPath }}
+```
--- a/README.md
+++ b/README.md
@@ -1,2 +1,13 @@
 # ps
-Interface from Golang to Adobe Photoshop (CS5)
+[![GoDoc](https://godoc.org/github.com/sbrow/ps?status.svg)](https://godoc.org/github.com/sbrow/ps) [![Build Status](https://travis-ci.org/sbrow/ps.svg?branch=master)](https://travis-ci.org/sbrow/ps) [![Coverage Status](https://coveralls.io/repos/github/sbrow/ps/badge.svg?branch=master)](https://coveralls.io/github/sbrow/ps?branch=master) [![Go Report Card](https://goreportcard.com/badge/github.com/sbrow/ps)](https://goreportcard.com/report/github.com/sbrow/ps)
+
+Package ps is a rudimentary API between Adobe Photoshop CS5 and Golang. The
+interaction between the two is implemented using Javascript/VBScript.
+
+Currently only supports Photoshop CS5 Windows x86_64. go:generate godocdown
+-output=README.md
+
+## Installation
+```bash
+$ go get -u github.com/sbrow/ps
+```
--- a/Test.psd
+++ b/Test.psd
--- a/Variables.go
+++ b/Variables.go
@@ -1,7 +1,5 @@
 package ps

-import "fmt"
-
 // ModeEnum determines how aggressively the package will attempt to sync with Photoshop.
 // Loading Photoshop files from scratch takes a long time, so the package saves
 // the state of the document in a JSON file in the /data folder whenever you call
@@ -11,36 +9,24 @@ type ModeEnum int
 // Mode holds the current mode.
 var Mode ModeEnum

-const (
-	// Normal Mode only verifies layers as they are operated on. The first time a
-	// layer's properties would be checked, it first overwrites the data from the
-	// Dump with data pulled directly from Photoshop. This allows you to quickly
-	// load documents in their current form.
-	Normal ModeEnum = iota
+// Normal Mode only verifies layers as they are operated on. The first time a
+// layer's properties would be checked, it first overwrites the data from the
+// Dump with data pulled directly from Photoshop. This allows you to quickly
+// load documents in their current form.
+const Normal ModeEnum = 0

-	// Safe Mode always loads the document from scratch, ignoring any dumped data.
-	// (Very Slow). If a function panics due to outdated data, often times re-running
-	// the function in safe mode is enough to remediate it.
-	Safe
+// Safe Mode always loads the document from scratch, ignoring any dumped data.
+// (Very Slow). If a function panics due to outdated data, often times re-running
+// the function in safe mode is enough to remediate it.
+const Safe ModeEnum = 1

-	// Fast mode skips all verification. Use Fast mode only when certain that the
-	// .psd file hasn't changed since the last time Document.Dump() was called.
-	Fast
-)
-
-// const Fast ModeEnum = 2
-
-// const Normal ModeEnum = 0
-
-// const Safe ModeEnum = 1
+// Fast mode skips all verification. Use Fast mode only when certain that the
+// .psd file hasn't changed since the last time Document.Dump() was called.
+const Fast ModeEnum = 2

 // SaveOption is an enum for options when closing a document.
 type SaveOption int

-func (p *SaveOption) String() string {
-	return fmt.Sprint("", *p) // TODO: Fix
-}
-
 // SaveChanges Saves changes before closing documents.
 const SaveChanges SaveOption = 1

--- a/artlayer.go
+++ b/artlayer.go
@@ -5,6 +5,8 @@ import (
 	"fmt"
 	"log"
 	"strings"
+
+	"github.com/sbrow/ps/runner"
 )

 // ArtLayer reflects some values from an Art Layer in a Photoshop document.
@@ -32,10 +34,10 @@ func (a *ArtLayer) Bounds() [2][2]int {
 type ArtLayerJSON struct {
 	Name      string
 	Bounds    [2][2]int
-	Visible   bool
 	Color     [3]int
 	Stroke    [3]int
 	StrokeAmt float32
+	Visible   bool
 	TextItem  *TextItem
 }

@@ -53,6 +55,7 @@ func (a *ArtLayer) MarshalJSON() ([]byte, error) {
 	})
 }

+// UnmarshalJSON loads json data into the object.
 func (a *ArtLayer) UnmarshalJSON(b []byte) error {
 	tmp := &ArtLayerJSON{}
 	if err := json.Unmarshal(b, &tmp); err != nil {
@@ -71,6 +74,7 @@ func (a *ArtLayer) UnmarshalJSON(b []byte) error {
 	return nil
 }

+// Name returns the layer's name.
 func (a *ArtLayer) Name() string {
 	return a.name
 }
@@ -100,6 +104,7 @@ func (a *ArtLayer) Y2() int {
 	return a.bounds[1][1]
 }

+// SetParent sets Group c to be the group that holds this layer.
 func (a *ArtLayer) SetParent(c Group) {
 	a.parent = c
 }
@@ -108,7 +113,7 @@ func (a *ArtLayer) SetParent(c Group) {
 // Layers need to be active to perform certain operations
 func (a *ArtLayer) SetActive() ([]byte, error) {
 	js := fmt.Sprintf("app.activeDocument.activeLayer=%s", JSLayer(a.Path()))
-	return DoJs("compilejs.jsx", js)
+	return DoJS("compilejs.jsx", js)
 }

 // SetColor creates a color overlay for the layer
@@ -137,7 +142,7 @@ func (a *ArtLayer) SetColor(c Color) {
 		log.Println(a.Path())
 		log.Panic(err)
 	}
-	byt, err = run("colorLayer", fmt.Sprint(r), fmt.Sprint(g), fmt.Sprint(b))
+	byt, err = runner.Run("colorLayer", fmt.Sprint(r), fmt.Sprint(g), fmt.Sprint(b))
 	if len(byt) != 0 {
 		log.Println(string(byt), "err")
 	}
@@ -146,6 +151,9 @@ func (a *ArtLayer) SetColor(c Color) {
 	}
 }

+// SetStroke edits the "aura" around the layer. If a nil stroke is given,
+// The current stroke is removed. If a non-nil stroke is given and the
+// current stroke is nil, a stroke is added.
 func (a *ArtLayer) SetStroke(stk Stroke, fill Color) {
 	if stk.Size == 0 {
 		a.Stroke = &stk
@@ -176,7 +184,7 @@ func (a *ArtLayer) SetStroke(stk Stroke, fill Color) {
 	col := fill.RGB()
 	log.Printf("Setting layer %s stroke to %.2fpt %v and color to %v\n", a.name, a.Stroke.Size,
 		a.Stroke.Color.RGB(), a.Color.RGB())
-	byt, err = run("colorStroke", fmt.Sprint(col[0]), fmt.Sprint(col[1]), fmt.Sprint(col[2]),
+	byt, err = runner.Run("colorStroke", fmt.Sprint(col[0]), fmt.Sprint(col[1]), fmt.Sprint(col[2]),
 		fmt.Sprintf("%.2f", stk.Size), fmt.Sprint(stkCol[0]), fmt.Sprint(stkCol[1]), fmt.Sprint(stkCol[2]))
 	if len(byt) != 0 {
 		log.Println(string(byt))
@@ -186,25 +194,11 @@ func (a *ArtLayer) SetStroke(stk Stroke, fill Color) {
 	}
 }

+// Path returns the Path to this layer, through all of its parents.
 func (a *ArtLayer) Path() string {
 	return fmt.Sprintf("%s%s", a.parent.Path(), a.name)
 }

-// Layer returns an ArtLayer from the active document given a specified
-// path string.
-func layer(path string) (ArtLayer, error) {
-	byt, err := DoJs("getLayer.jsx", JSLayer(path))
-	if err != nil {
-		return ArtLayer{}, err
-	}
-	var out ArtLayer
-	err = json.Unmarshal(byt, &out)
-	if err != nil {
-		return ArtLayer{}, err
-	}
-	return out, err
-}
-
 // SetVisible makes the layer visible.
 func (a *ArtLayer) SetVisible(b bool) {
 	if a.visible == b {
@@ -219,7 +213,9 @@ func (a *ArtLayer) SetVisible(b bool) {
 	}
 	js := fmt.Sprintf("%s.visible=%v;",
 		strings.TrimRight(JSLayer(a.Path()), ";"), b)
-	DoJs("compilejs.jsx", js)
+	if byt, err := DoJS("compilejs.jsx", js); err != nil {
+		log.Println(string(byt), err)
+	}
 }

 // Visible returns whether or not the layer is currently hidden.
@@ -250,8 +246,11 @@ func (a *ArtLayer) SetPos(x, y int, bound string) {
 	default:
 		lyrX = a.X1()
 	}
-	byt, err := DoJs("moveLayer.jsx", JSLayer(a.Path()), fmt.Sprint(x-lyrX), fmt.Sprint(y-lyrY))
+	byt, err := DoJS("moveLayer.jsx", JSLayer(a.Path()),
+		fmt.Sprint(x-lyrX), fmt.Sprint(y-lyrY),
+	)
 	if err != nil {
+		fmt.Printf("%+v %+v\n", a.Parent(), a.Path())
 		panic(err)
 	}
 	var lyr ArtLayer
@@ -262,9 +261,15 @@ func (a *ArtLayer) SetPos(x, y int, bound string) {
 	a.bounds = lyr.bounds
 }

+// Refresh syncs the layer with Photoshop.
 func (a *ArtLayer) Refresh() error {
-	tmp, err := layer(a.Path())
-	if err != nil {
+	var tmp *ArtLayer
+	data, err := DoJS("getLayer.jsx", JSLayer(a.Path()))
+	if err != nil && len(err.Error()) > 0 {
+		return err
+	}
+	if err = json.Unmarshal(data, &tmp); err != nil {
+		fmt.Println(string(data))
 		return err
 	}
 	tmp.SetParent(a.Parent())
--- a/colors.go
+++ b/colors.go
@@ -2,6 +2,7 @@ package ps

 import "encoding/hex"

+// Some basic colors.
 var (
 	ColorBlack Color = RGB{0, 0, 0}
 	ColorGray  Color = RGB{128, 128, 128}
@@ -41,15 +42,18 @@ func (r RGB) RGB() [3]int {
 	return [3]int{r.Red, r.Green, r.Blue}
 }

+// Hex returns the color coverted to hexidecimal format.
 func (r RGB) Hex() []uint8 {
 	src := []uint8{uint8(r.Red), uint8(r.Green), uint8(r.Blue)}
 	hex := make([]byte, hex.EncodedLen(len(src)))
 	return hex
 }

-// Hex is a color in hexadecimal format. It implements the Color interface.
+// Hex is a color in hexadecimal format.
+// It satisfies the Color interface.
 type Hex []uint8

+// RGB returns the Hex value converted to RGB
 func (h Hex) RGB() [3]int {
 	src := []byte(h)
 	dst := make([]byte, hex.DecodedLen(len(src)))
@@ -60,6 +64,8 @@ func (h Hex) RGB() [3]int {
 	return [3]int{int(dst[0]), int(dst[1]), int(dst[2])}
 }

+// Hex returns the hex value of the number,
+// to satisfy the Color interface.
 func (h Hex) Hex() []uint8 {
 	return h
 }
--- a/cover.out
+++ b/cover.out
@@ -1 +0,0 @@
-mode: count
--- a/document.go
+++ b/document.go
@@ -2,7 +2,6 @@ package ps

 import (
 	"encoding/json"
-	"fmt"
 	"io/ioutil"
 	"log"
 	"os"
@@ -20,6 +19,8 @@ type Document struct {
 	layerSets []*LayerSet
 }

+// DocumentJSON is an exported version of Document that
+// allows Documents to be saved to and loaded from JSON.
 type DocumentJSON struct {
 	Name      string
 	Height    int
@@ -28,11 +29,13 @@ type DocumentJSON struct {
 	LayerSets []*LayerSet
 }

+// MarshalJSON returns the Document in JSON format.
 func (d *Document) MarshalJSON() ([]byte, error) {
 	return json.Marshal(&DocumentJSON{Name: d.name, Height: d.height,
 		Width: d.width, ArtLayers: d.artLayers, LayerSets: d.layerSets})
 }

+// UnmarshalJSON loads JSON data into this Document.
 func (d *Document) UnmarshalJSON(b []byte) error {
 	tmp := &DocumentJSON{}
 	if err := json.Unmarshal(b, &tmp); err != nil {
@@ -58,15 +61,17 @@ func (d *Document) Name() string {
 	return d.name
 }

+// Parent returns the Group that contains d.
 func (d *Document) Parent() Group {
 	return nil
 }

-// The height of the document, in pixels.
+// Height returns the height of the document, in pixels.
 func (d *Document) Height() int {
 	return d.height
 }

+// ArtLayers returns this document's ArtLayers, if any.
 func (d *Document) ArtLayers() []*ArtLayer {
 	return d.artLayers
 }
@@ -82,7 +87,9 @@ func (d *Document) LayerSet(name string) *LayerSet {
 	for _, set := range d.layerSets {
 		if set.name == name {
 			if Mode != Fast && !set.current {
-				set.Refresh()
+				if err := set.Refresh(); err != nil {
+					log.Panic(err)
+				}
 			}
 			return set
 		}
@@ -90,41 +97,38 @@ func (d *Document) LayerSet(name string) *LayerSet {
 	return nil
 }

+// ActiveDocument returns document currently focused in Photoshop.
+//
+// TODO: Reduce cylcomatic complexity
 func ActiveDocument() (*Document, error) {
 	log.Println("Loading ActiveDoucment")
 	d := &Document{}

-	byt, err := DoJs("activeDocName.jsx")
+	byt, err := DoJS("activeDocName.jsx")
 	if err != nil {
 		return nil, err
 	}
 	d.name = strings.TrimRight(string(byt), "\r\n")
 	if Mode != Safe {
-		byt, err = ioutil.ReadFile(d.Filename())
-		if err == nil {
-			log.Println("Previous version found, loading")
-			err = json.Unmarshal(byt, &d)
-			if err == nil {
+		err = d.Restore()
 		return d, err
 	}
-		}
-	}
 	log.Println("Loading manually (This could take awhile)")
-	byt, err = DoJs("getActiveDoc.jsx")
+	byt, err = DoJS("getActiveDoc.jsx")
 	if err != nil {
 		log.Panic(err)
 	}
 	err = json.Unmarshal(byt, &d)
 	if err != nil {
 		d.Dump()
-		fmt.Println(string(byt))
 		log.Panic(err)
 	}
 	for _, lyr := range d.artLayers {
 		lyr.SetParent(d)
 	}
 	for i, set := range d.layerSets {
-		s, err := NewLayerSet(set.Path()+"/", d)
+		var s *LayerSet
+		s, err = NewLayerSet(set.Path()+"/", d)
 		if err != nil {
 			log.Fatal(err)
 		}
@@ -135,8 +139,22 @@ func ActiveDocument() (*Document, error) {
 	return d, err
 }

+// Restore loads document data from a JSON file.
+func (d *Document) Restore() error {
+	byt, err := ioutil.ReadFile(d.Filename())
+	if err == nil {
+		log.Println("Previous version found, loading")
+		err = json.Unmarshal(byt, &d)
+	}
+	return err
+}
+
+// SetParent does nothing, as the document is a top-level object
+// and therefore can't have a parent group.
+// The function is needed to implement the group interface.
 func (d *Document) SetParent(g Group) {}

+// Path returns the root path ("") for all the layers.
 func (d *Document) Path() string {
 	return ""
 }
@@ -151,16 +169,24 @@ func (d *Document) Filename() string {
 		strings.TrimRight(d.name, "\r\n")+".txt")
 }

+// Dump saves the document to disk in JSON format.
 func (d *Document) Dump() {
 	log.Println("Dumping to disk")
+	log.Println(d.Filename())
 	f, err := os.Create(d.Filename())
 	if err != nil {
 		log.Fatal(err)
 	}
-	defer f.Close()
+	defer func() {
+		if err = f.Close(); err != nil {
+			log.Println(err)
+		}
+	}()
 	byt, err := json.MarshalIndent(d, "", "\t")
 	if err != nil {
 		log.Fatal(err)
 	}
-	f.Write(byt)
+	if _, err = f.Write(byt); err != nil {
+		log.Println(err)
+	}
 }
--- a/examples_test.go
+++ b/examples_test.go
@@ -4,7 +4,7 @@ import "fmt"

 func ExampleJSLayer() {
 	// The path of a layer inside a top level group.
-	path := "/Group 1/Layer 1"
+	path := "Group 1/Layer 1"
 	fmt.Println(JSLayer(path))
 	// Output: app.activeDocument.layerSets.getByName('Group 1').artLayers.getByName('Layer 1');
 }
--- a/layerset.go
+++ b/layerset.go
@@ -1,4 +1,3 @@
-// TODO: Count skipped steps.
 package ps

 import (
@@ -21,6 +20,7 @@ type Group interface {
 	UnmarshalJSON(b []byte) error
 }

+// LayerSet holds a group of Layer objects and a group of LayerSet objects.
 type LayerSet struct {
 	name      string
 	bounds    [2][2]int
@@ -31,6 +31,8 @@ type LayerSet struct {
 	layerSets []*LayerSet
 }

+// LayerSetJSON is an exported version of LayerSet, that allows LayerSets to be
+// saved to and loaded from JSON.
 type LayerSetJSON struct {
 	Name      string
 	Bounds    [2][2]int
@@ -39,6 +41,7 @@ type LayerSetJSON struct {
 	LayerSets []*LayerSet
 }

+// MarshalJSON returns the LayerSet in JSON form.
 func (l *LayerSet) MarshalJSON() ([]byte, error) {
 	return json.Marshal(&LayerSetJSON{
 		Name:      l.name,
@@ -49,6 +52,7 @@ func (l *LayerSet) MarshalJSON() ([]byte, error) {
 	})
 }

+// UnmarshalJSON loads the json data into this LayerSet.
 func (l *LayerSet) UnmarshalJSON(b []byte) error {
 	tmp := &LayerSetJSON{}
 	if err := json.Unmarshal(b, &tmp); err != nil {
@@ -69,15 +73,20 @@ func (l *LayerSet) UnmarshalJSON(b []byte) error {
 	return nil
 }

-func (l *LayerSet) Name() string {
+// Name returns the name of the LayerSet
+func (l LayerSet) Name() string {
 	return l.name
 }

+// ArtLayers returns the LayerSet's ArtLayers.
 func (l *LayerSet) ArtLayers() []*ArtLayer {
-	if Mode != 2 {
+	if Mode != Fast {
 		for _, lyr := range l.artLayers {
 			if !lyr.current {
-				lyr.Refresh()
+				if err := lyr.Refresh(); err != nil {
+					log.Println(err)
+				}
+				lyr.current = true
 			}
 		}
 	}
@@ -93,9 +102,10 @@ func (l *LayerSet) ArtLayer(name string) *ArtLayer {
 			if Mode == 0 && !lyr.current {
 				err := lyr.Refresh()
 				if err != nil {
-					l.Refresh()
-					err := lyr.Refresh()
-					if err != nil {
+					if err = l.Refresh(); err != nil {
+						log.Panic(err)
+					}
+					if err := lyr.Refresh(); err != nil {
 						log.Panic(err)
 					}
 				}
@@ -103,18 +113,16 @@ func (l *LayerSet) ArtLayer(name string) *ArtLayer {
 			return lyr
 		}
 	}
-	// l.Refresh()
-	// for _, lyr := range l.artLayers {
-	// fmt.Println(lyr)
-	// }
 	lyr := l.ArtLayer(name)
 	fmt.Println(lyr)
 	if lyr == nil {
-		log.Panic(errors.New("Layer not found!"))
+		log.Panic(errors.New("layer not found"))
 	}
 	return lyr
 }

+// LayerSets returns the LayerSets contained within
+// this set.
 func (l *LayerSet) LayerSets() []*LayerSet {
 	return l.layerSets
 }
@@ -131,18 +139,21 @@ func (l *LayerSet) LayerSet(name string) *LayerSet {
 }

 // Bounds returns the furthest corners of the LayerSet.
-func (l *LayerSet) Bounds() [2][2]int {
+func (l LayerSet) Bounds() [2][2]int {
 	return l.bounds
 }

-func (l *LayerSet) SetParent(c Group) {
-	l.parent = c
+// SetParent puts this LayerSet into the given group.
+func (l *LayerSet) SetParent(g Group) {
+	l.parent = g
 }

+// Parent returns this layerSet's parent.
 func (l *LayerSet) Parent() Group {
 	return l.parent
 }

+// Path returns the layer path to this Set.
 func (l *LayerSet) Path() string {
 	if l.parent == nil {
 		return l.name
@@ -150,29 +161,29 @@ func (l *LayerSet) Path() string {
 	return fmt.Sprintf("%s%s/", l.parent.Path(), l.name)
 }

+// NewLayerSet grabs the LayerSet with the given path and returns it.
 func NewLayerSet(path string, g Group) (*LayerSet, error) {
 	path = strings.Replace(path, "//", "/", -1)
-	byt, err := DoJs("getLayerSet.jsx", JSLayer(path))
+	byt, err := DoJS("getLayerSet.jsx", JSLayer(path), JSLayerMerge(path))
+	fmt.Println(JSLayer(path), JSLayerMerge(path))
 	if err != nil {
-		log.Panic(err)
+		return nil, err
 	}
 	var out *LayerSet
 	err = json.Unmarshal(byt, &out)
 	if err != nil {
 		log.Println(JSLayer(path))
 		log.Println(string(byt))
-		log.Panic(err)
+		return nil, err
 	}
 	out.SetParent(g)
 	log.Printf("Loading ActiveDocument/%s\n", out.Path())
-	if err != nil {
-		return &LayerSet{}, err
-	}
 	for _, lyr := range out.artLayers {
 		lyr.SetParent(out)
 	}
 	for i, set := range out.layerSets {
-		s, err := NewLayerSet(fmt.Sprintf("%s%s/", path, set.Name()), out)
+		var s *LayerSet
+		s, err = NewLayerSet(fmt.Sprintf("%s%s/", path, set.Name()), out)
 		if err != nil {
 			log.Fatal(err)
 		}
@@ -183,19 +194,23 @@ func NewLayerSet(path string, g Group) (*LayerSet, error) {
 	return out, err
 }

-func (l *LayerSet) Visible() bool {
+// Visible returns whether or not the LayerSet is currently visible.
+func (l LayerSet) Visible() bool {
 	return l.visible
 }

 // SetVisible makes the LayerSet visible.
-func (l *LayerSet) SetVisible(b bool) {
+func (l *LayerSet) SetVisible(b bool) error {
 	if l.visible == b {
-		return
+		return nil
 	}
 	js := fmt.Sprintf("%s.visible=%v;", strings.TrimRight(
 		JSLayer(l.Path()), ";"), b)
-	DoJs("compilejs.jsx", js)
+	if _, err := DoJS("compilejs.jsx", js); err != nil {
+		return err
+	}
 	l.visible = b
+	return nil
 }

 // SetPos snaps the given layerset boundry to the given point.
@@ -204,8 +219,9 @@ func (l *LayerSet) SetPos(x, y int, bound string) {
 	if !l.visible || (x == 0 && y == 0) {
 		return
 	}
-	byt, err := DoJs("LayerSetBounds.jsx", JSLayer(l.Path()),
-		JSLayer(l.Path(), true))
+	path := JSLayer(l.Path())
+	mrgPath := JSLayerMerge(l.Path())
+	byt, err := DoJS("LayerSetBounds.jsx", path, mrgPath)
 	if err != nil {
 		log.Println(string(byt))
 		log.Panic(err)
@@ -234,45 +250,53 @@ func (l *LayerSet) SetPos(x, y int, bound string) {
 	default:
 		lyrX = l.bounds[0][0]
 	}
-	byt, err = DoJs("moveLayer.jsx", JSLayer(l.Path()), fmt.Sprint(x-lyrX),
-		fmt.Sprint(y-lyrY), JSLayer(l.Path(), true))
+	byt, err = DoJS("moveLayer.jsx", JSLayer(l.Path()), fmt.Sprint(x-lyrX),
+		fmt.Sprint(y-lyrY), JSLayerMerge(l.Path()))
 	if err != nil {
 		fmt.Println("byte:", string(byt))
 		panic(err)
 	}
 	var lyr LayerSet
-	err = json.Unmarshal(byt, &lyr)
-	if err != nil {
+	if err = json.Unmarshal(byt, &lyr); err != nil {
 		fmt.Println("byte:", string(byt))
 		log.Panic(err)
 	}
 	l.bounds = lyr.bounds
 }

-func (l *LayerSet) Refresh() {
+// Refresh syncs the LayerSet with Photoshop.
+func (l *LayerSet) Refresh() error {
 	var tmp *LayerSet
-	byt, err := DoJs("getLayerSet.jsx", JSLayer(l.Path()), JSLayer(l.Path(), true))
+	byt, err := DoJS("getLayerSet.jsx", JSLayer(l.Path()))
 	if err != nil {
-		panic(err)
+		if err = DoAction("Undo", "DK"); err != nil {
+			return err
+		}
+		if byt, err = DoJS("getLayerSet.jsx", JSLayer(l.Path())); err != nil {
+			return err
+		}
 	}
 	err = json.Unmarshal(byt, &tmp)
 	if err != nil {
 		log.Println("Error in LayerSet.Refresh() \"", string(byt), "\"", "for", l.Path())
-		log.Panic(err)
+		return err
 	}
 	tmp.SetParent(l.Parent())
 	for _, lyr := range l.artLayers {
-		err := lyr.Refresh()
+		err = lyr.Refresh()
 		if err != nil {
 			l.artLayers = tmp.artLayers
 			break
 		}
 	}
 	for _, set := range l.layerSets {
-		set.Refresh()
+		if err = set.Refresh(); err != nil {
+			return err
+		}
 	}
 	l.name = tmp.name
 	l.bounds = tmp.bounds
 	l.visible = tmp.visible
 	l.current = true
+	return nil
 }
--- a/ps.go
+++ b/ps.go
@@ -2,40 +2,28 @@
 // The interaction between the two is implemented using Javascript/VBScript.
 //
 // Currently only supports Photoshop CS5 Windows x86_64.
-//
-// TODO: Create a Photoshop struct to hold program values and functions.
+//go:generate godocdown -output=README.md
 package ps

 import (
-	"bytes"
-	"errors"
 	"fmt"
 	"io/ioutil"
+	"log"
 	"os"
-	"os/exec"
 	"path/filepath"
+	"regexp"
 	"runtime"
 	"strings"
+
+	"github.com/sbrow/ps/runner"
 )

-// opts are the options we need to pass to scmd.
-var opts string
-
-// scmd is the name of the program that runs scripts on this OS.
-var scmd string
-
+// The full path to this directory.
 var pkgpath string

 func init() {
 	_, file, _, _ := runtime.Caller(0)
 	pkgpath = filepath.Dir(file)
-	switch runtime.GOOS {
-	case "windows":
-		scmd = "cscript.exe"
-		opts = "/nologo"
-	case "darwin":
-		scmd = "osacript"
-	}
 }

 // ApplyDataset fills out a template file with information
@@ -44,47 +32,60 @@ func init() {
 // data in the Go Document struct- you will have to implement syncing
 // them yourself.
 func ApplyDataset(name string) error {
-	_, err := DoJs("applyDataset.jsx", name)
+	_, err := DoJS("applyDataset.jsx", name)
 	return err
 }

 // Close closes the active document in Photoshop, using the given save option.
 // TODO: Move to Document
 func Close(save SaveOption) error {
-	_, err := run("close", save.String())
+	_, err := runner.Run("close", fmt.Sprint(save))
 	return err
 }

 // DoAction runs the Photoshop Action with the given name from the Action Set "from".
 func DoAction(action, from string) error {
-	_, err := run("action", action, from)
+	_, err := runner.Run("action", action, from)
 	return err
 }

-// DoJs runs a Photoshop Javascript script file (.jsx) from the specified location.
+// DoJS runs a Photoshop Javascript script file (.jsx) from the specified location.
 // The script can't directly return output, so instead it writes output to
 // a temporary file ($TEMP/js_out.txt), whose contents is then read and returned.
-func DoJs(path string, args ...string) (out []byte, err error) {
+func DoJS(path string, args ...string) ([]byte, error) {
+	// var err error
 	// Temp file for js to output to.
-	outpath := filepath.Join(os.Getenv("TEMP"), "js_out.txt")
-	// defer os.Remove(outpath)
+	outpath, err := ioutil.TempFile(os.Getenv("TEMP"), "")
+	defer func() {
+		if err = outpath.Close(); err != nil {
+			log.Println(err)
+		}
+		if err = os.Remove(outpath.Name()); err != nil {
+			log.Println(err)
+		}
+	}()
+
+	if err != nil {
+		return nil, err
+	}
 	if !strings.HasSuffix(path, ".jsx") {
 		path += ".jsx"
 	}

-	args = append([]string{outpath}, args...)
+	args = append([]string{outpath.Name()}, args...)

 	// If passed a script by name, assume it's in the default folder.
 	if filepath.Dir(path) == "." {
-		path = filepath.Join(pkgpath, "scripts", path)
+		path = filepath.Join(pkgpath, "runner", "scripts", path)
 	}

 	args = append([]string{path}, args...)
-	cmd, err := run("dojs", args...)
+	cmd, err := runner.Run("dojs", args...)
 	if err == nil {
-		file, err := ioutil.ReadFile(outpath)
+		var data []byte
+		data, err = ioutil.ReadFile(outpath.Name())
 		if err == nil {
-			cmd = append(cmd, file...)
+			cmd = append(cmd, data...)
 		}
 	}
 	return cmd, err
@@ -94,7 +95,7 @@ func DoJs(path string, args ...string) (out []byte, err error) {
 //
 // Init should be called before all other
 func Init() error {
-	_, err := run("start")
+	_, err := runner.Run("start")
 	return err
 }

@@ -103,15 +104,10 @@ func Init() error {
 // property of the layer, you'll have to trim the output before concatenating.
 //
 // TODO: get rid of the semicolon.
-func JSLayer(path string, art ...bool) string {
-	path = strings.TrimLeft(path, "/")
+func JSLayer(path string) string {
 	pth := strings.Split(path, "/")
 	js := "app.activeDocument"
 	last := len(pth) - 1
-	if len(art) > 0 {
-		pth = pth[:len(pth)-1]
-		last--
-	}
 	if last > 0 {
 		for i := 0; i < last; i++ {
 			js += fmt.Sprintf(".layerSets.getByName('%s')", pth[i])
@@ -123,56 +119,33 @@ func JSLayer(path string, art ...bool) string {
 	return js + ";"
 }

+// JSLayerMerge gets the Javascript code to get the Layer or LayerSet with this path
+// and returns the result if you were to merge the bottom-most LayerSet.
+//
+// If the bottom-most Object in the path is not a LayerSet, it will returns the same
+// results as JSLayer.
+func JSLayerMerge(path string) string {
+	reg := regexp.MustCompile(`layerSets(\.getByName\('[^']*'\)($|[^.]))`)
+	return reg.ReplaceAllString(JSLayer(path), "artLayers$1")
+}
+
 // Open opens a Photoshop document with the specified path.
 // If Photoshop is not currently running, it is started before
 // opening the document.
 func Open(path string) error {
-	_, err := run("open", path)
+	_, err := runner.Run("open", path)
 	return err
 }

 // Quit exits Photoshop, closing all open docuemnts using the given save option.
 func Quit(save SaveOption) error {
-	_, err := run("quit", save.String())
+	_, err := runner.Run("quit", fmt.Sprint(save))
 	return err
 }

-// run handles running the script files, returning output, and displaying errors.
-func run(name string, args ...string) ([]byte, error) {
-	var ext string
-	var out, errs bytes.Buffer
-
-	switch runtime.GOOS {
-	case "windows":
-		ext = ".vbs"
-	case "darwin":
-		ext = ".applescript"
-	}
-	if !strings.HasSuffix(name, ext) {
-		name += ext
-	}
-
-	if strings.Contains(name, "dojs") {
-		args = append([]string{opts, filepath.Join(pkgpath, "scripts", name)},
-			args[0],
-			fmt.Sprint(strings.Join(args[1:], ",,")),
-		)
-	} else {
-		args = append([]string{opts, filepath.Join(pkgpath, "scripts", name)}, args...)
-	}
-	cmd := exec.Command(scmd, args...)
-	cmd.Stdout = &out
-	cmd.Stderr = &errs
-	err := cmd.Run()
-	if err != nil || len(errs.Bytes()) != 0 {
-		return out.Bytes(), errors.New(errs.String())
-	}
-	return out.Bytes(), nil
-}
-
 // SaveAs saves the Photoshop document to the given location.
 func SaveAs(path string) error {
-	_, err := run("save", path)
+	_, err := runner.Run("save", path)
 	return err
 }

@@ -180,10 +153,11 @@ func SaveAs(path string) error {
 // signals that they are ready to continue (by pushing enter).
 //
 // Useful for when you need to do something by hand in the middle of an
-// otherwise automated process. (i.e. importing a dataset).
+// otherwise automated process, (e.g. importing a dataset).
 func Wait(msg string) {
-	fmt.Print(msg)
 	var input string
+
+	fmt.Print(msg)
 	fmt.Scanln(&input)
 	fmt.Println()
 }
--- a/ps_test.go
+++ b/ps_test.go
@@ -5,15 +5,28 @@ import (
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
+	"log"
 	"os"
 	"path/filepath"
+	"regexp"
 	"testing"
+
+	"github.com/sbrow/ps/runner"
 )

+var testDoc string
+
+func init() {
+	Mode = Normal
+	log.Printf("Running in mode %v\n", Mode)
+	testDoc = filepath.Join(pkgpath, "test.psd")
+}
+
 func TestPkgPath(t *testing.T) {
-	out := filepath.Join(os.Getenv("GOPATH"), "src", "github.com", "sbrow", "ps")
-	if filepath.Join(pkgpath) != out {
-		t.Error(filepath.Join(pkgpath), out)
+	want := filepath.Join(os.Getenv("GOPATH"), "src", "github.com", "sbrow", "ps")
+	got := filepath.Join(pkgpath)
+	if got != want {
+		t.Errorf("wanted: %s\ngot: %s", want, got)
 	}
 }

@@ -21,8 +34,8 @@ func TestInit(t *testing.T) {
 	if testing.Short() {
 		t.Skip("Skipping \"TestStart\"")
 	}
-	err := Init()
-	if err != nil {
+	Quit(2)
+	if err := Init(); err != nil {
 		t.Error(err)
 	}
 }
@@ -31,8 +44,8 @@ func TestOpen(t *testing.T) {
 	if testing.Short() {
 		t.Skip("Skipping \"TestOpen\"")
 	}
-	err := Open("F:\\GitLab\\dreamkeepers-psd\\Template009.1.psd")
-	if err != nil {
+	if err := Open(testDoc); err != nil {
+		log.Println(testDoc)
 		t.Fatal(err)
 	}
 }
@@ -51,6 +64,7 @@ func TestQuit(t *testing.T) {
 	if testing.Short() {
 		t.Skip("Skipping \"TestQuit\"")
 	}
+	Init()
 	err := Quit(2)
 	if err != nil {
 		t.Fatal(err)
@@ -58,25 +72,25 @@ func TestQuit(t *testing.T) {
 }

 func TestDoJs(t *testing.T) {
-	err := Open("F:\\GitLab\\dreamkeepers-psd\\Template009.1.psd")
-	if err != nil {
+	var err error
+	if err = Open(testDoc); err != nil {
 		t.Fatal(err)
 	}
-	want := []byte("F:\\TEMP\\js_out.txt\r\narg\r\nargs\r\n")
+	want := "F:\\\\TEMP\\\\[0-9]*\r\narg\r\nargs\r\n"
 	script := "test.jsx"
-	ret, err := DoJs(script, "arg", "args")
-	if err != nil {
+	var got []byte
+	if got, err = DoJS(script, "arg", "args"); err != nil {
 		t.Fatal(err)
 	}
-	if string(ret) != string(want) {
-		fail := fmt.Sprintf("TestJS failed.\ngot:\t\"%s\"\nwant:\t\"%s\"", ret, want)
+	if b, err := regexp.Match(want, got); err != nil || !b {
+		fail := fmt.Sprintf("wanted: %s\ngot: %s err: %s\n", want, got, err)
 		t.Error(fail)
 	}
 }

 func TestRun(t *testing.T) {
 	out := []byte("hello,\r\nworld!\r\n")
-	msg, err := run("test", "hello,", "world!")
+	msg, err := runner.Run("test", "hello,", "world!")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -94,13 +108,12 @@ func TestDoAction_Crop(t *testing.T) {
 	if testing.Short() {
 		t.Skip("Skipping \"TestDoAction_Crop\"")
 	}
-	err := Open("F:\\GitLab\\dreamkeepers-psd\\Template009.1.psd")
-	if err != nil {
+	var err error
+	if err = Open(testDoc); err != nil {
 		t.Fatal(err)
 	}
-	err = DoAction("DK", "Crop")
-	if err != nil {
-		t.Fatal(err)
+	if err = DoAction("DK", "Crop"); err != nil {
+		t.Error(err)
 	}
 }

@@ -108,47 +121,37 @@ func TestDoAction_Undo(t *testing.T) {
 	if testing.Short() {
 		t.Skip("Skipping \"TestDoAction_Undo\"")
 	}
-	err := DoAction("DK", "Undo")
-	if err != nil {
+	if err := DoAction("DK", "Undo"); err != nil {
 		t.Fatal(err)
 	}
 }

 func TestSaveAs(t *testing.T) {
-	err := SaveAs("F:\\TEMP\\test.png")
-	if err != nil {
+	if err := SaveAs("F:\\TEMP\\test.png"); err != nil {
 		t.Fatal(err)
 	}
 	os.Remove("F:\\TEMP\\test.png")
 }

 func TestLayerSet(t *testing.T) {
-	_, err := NewLayerSet("Areas/TitleBackground/", nil)
-	if err != nil {
+	if _, err := NewLayerSet("Group 1/", nil); err != nil {
 		t.Fatal(err)
 	}
 }
-
-func TestLayer(t *testing.T) {
-	_, err := layer("Border/Inner Border")
-	if err != nil {
-		t.Fatal(err)
-	}
-}
-
 func TestMove(t *testing.T) {
-	lyr, err := layer("Group 1/Layer 1")
+	d, err := ActiveDocument()
 	if err != nil {
 		t.Fatal(err)
 	}
+	lyr := d.LayerSet("Group 1").ArtLayer("Layer 1")
 	lyr.SetPos(100, 50, "TL")
 }

 func TestActiveDocument(t *testing.T) {
-	Mode = Safe
 	if testing.Short() {
 		t.Skip("Skipping \"TestDocument\"")
 	}
+	Open(testDoc)
 	d, err := ActiveDocument()
 	defer d.Dump()
 	if err != nil {
@@ -170,8 +173,7 @@ func TestActiveDocument(t *testing.T) {
 		fmt.Println(d.layerSets[0].artLayers[0].Parent())
 		t.Fatal("Layerset's ArtLayers do not have correct parents")
 	}
-	// d.LayerSet("Areas").LayerSet("Bottom").ArtLayer("L Bar").SetColor(155, 255, 255)
-	lyr := d.LayerSet("Text").ArtLayer("speed")
+	lyr := d.LayerSet("Group 1").ArtLayer("Layer 1")
 	if lyr == nil {
 		t.Fatal("lyr does not exist")
 	}
@@ -180,7 +182,7 @@ func TestActiveDocument(t *testing.T) {
 }

 func TestColor(t *testing.T) {
-	byt, err := run("colorLayer.vbs", "255", "255", "255")
+	byt, err := runner.Run("colorLayer.vbs", "255", "255", "255")
 	fmt.Println(string(byt))
 	fmt.Println(err)
 	if err != nil {
@@ -204,15 +206,15 @@ func TestDocumentLayerSet(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	set := d.LayerSet("Text")
+	set := d.LayerSet("Group 1")
 	fmt.Println(set)
 	for _, lyr := range set.ArtLayers() {
 		fmt.Println(lyr.name)
 	}
-	lyr := set.ArtLayer("id")
+	lyr := set.ArtLayer("Layer 1")
 	fmt.Println(lyr)
-	set = d.LayerSet("Indicators").LayerSet("Life")
-	fmt.Println(set)
+	// set = d.LayerSet("Indicators").LayerSet("Life")
+	// fmt.Println(set)
 	for _, lyr := range set.ArtLayers() {
 		fmt.Println(lyr.name)
 	}
@@ -220,7 +222,7 @@ func TestDocumentLayerSet(t *testing.T) {

 func TestLoadedDoc(t *testing.T) {
 	var d *Document
-	byt, err := ioutil.ReadFile("Document.txt")
+	byt, err := ioutil.ReadFile("./data/Test.psd.txt")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -239,12 +241,23 @@ func TestLoadedDoc(t *testing.T) {
 	}
 }

+func TestJSLayer(t *testing.T) {
+	d, _ := ActiveDocument()
+	set := d.LayerSet("Group 1")
+	lyr := set.ArtLayer("Layer 1")
+	fmt.Println(JSLayer(set.Path()))
+	fmt.Println(JSLayer(lyr.Path()))
+}
 func TestDoJs_HideLayer(t *testing.T) {
-	err := Open("F:\\GitLab\\dreamkeepers-psd\\Template009.1.psd")
+	err := Open(testDoc)
 	if err != nil {
 		t.Fatal(err)
 	}
-	lyr, err := NewLayerSet("Areas/TitleBackground/", nil)
+	d, err := ActiveDocument()
+	if err != nil {
+		t.Fatal(err)
+	}
+	lyr, err := NewLayerSet("Group 1/", d)
 	lyr.SetVisible(false)
 	if err != nil {
 		t.Fatal(err)
@@ -252,7 +265,7 @@ func TestDoJs_HideLayer(t *testing.T) {
 }

 func TestTextItem(t *testing.T) {
-	// err := Open("F:\\GitLab\\dreamkeepers-psd\\Template009.1.psd")
+	// err := Open(testDoc)
 	// if err != nil {
 	// t.Fatal(err)
 	// }
@@ -305,14 +318,14 @@ func BenchmarkHideLayer(b *testing.B) {
 // 59ns
 func BenchmarkHelloWorld_go(b *testing.B) {
 	for i := 0; i < b.N; i++ {
-		fmt.Sprintf("Hello, world!")
+		_ = fmt.Sprintf("Hello, world!")
 	}
 }

 // ~35200000ns (.0352s)
 func BenchmarkHelloWorld_vbs(b *testing.B) {
 	for i := 0; i < b.N; i++ {
-		_, err := run("helloworld")
+		_, err := runner.Run("helloworld")
 		if err != nil {
 			b.Fatal(err)
 		}
@@ -322,7 +335,7 @@ func BenchmarkHelloWorld_vbs(b *testing.B) {
 // ~51700000 (0.0517)
 func BenchmarkHelloWorld_js(b *testing.B) {
 	for i := 0; i < b.N; i++ {
-		_, err := DoJs("test.jsx", "Hello, World!")
+		_, err := DoJS("test.jsx", "Hello, World!")
 		if err != nil {
 			b.Fatal(err)
 		}
--- a/runner/debug.test
+++ b/runner/debug.test
--- a/runner/runner.go
+++ b/runner/runner.go
@@ -0,0 +1,65 @@
+package runner
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+	"strings"
+)
+
+// Windows is the runner for Visual Basic Scripts.
+var Windows = Runner{
+	Cmd:  "cscript.exe",
+	Args: []string{"/nologo"},
+	Ext:  ".vbs",
+}
+
+// pkgpath is the path to this package.
+var pkgpath string
+
+// std is the Standard Runner.
+var std Runner
+
+func init() {
+	_, file, _, _ := runtime.Caller(0)
+	pkgpath = filepath.Dir(file)
+	switch runtime.GOOS {
+	case "windows":
+		std = Windows
+	}
+}
+
+// Runner runs script files to communicate between the OS/Photoshop and the Go code.
+type Runner struct {
+	Cmd  string   // The name of the command to run
+	Args []string // The arguments to pass to the command.
+	Ext  string   // The file extension to use for these commands.
+}
+
+// Run runs the standard runner with the given values.
+func Run(name string, args ...string) ([]byte, error) {
+	var out, errs bytes.Buffer
+	cmd := exec.Command(std.Cmd, parseArgs(name, args...)...)
+	cmd.Stdout, cmd.Stderr = &out, &errs
+	if err := cmd.Run(); err != nil || len(errs.Bytes()) != 0 {
+		return out.Bytes(), errors.New(errs.String())
+	}
+	return out.Bytes(), nil
+}
+
+// parseArgs parses the given args into the correct syntax.
+func parseArgs(name string, args ...string) []string {
+	if !strings.HasSuffix(name, std.Ext) {
+		name += std.Ext
+	}
+	newArgs := append(std.Args, filepath.Join(pkgpath, "scripts", name))
+	if strings.Contains(name, "dojs") {
+		newArgs = append(newArgs, args[0], fmt.Sprint(strings.Join(args[1:], ",,")))
+	} else {
+		newArgs = append(newArgs, args...)
+	}
+	return newArgs
+}
--- a/runner/runner_test.go
+++ b/runner/runner_test.go
@@ -0,0 +1,55 @@
+package runner
+
+import (
+	"io/ioutil"
+	"log"
+	"os"
+	"path/filepath"
+	"runtime"
+	"testing"
+)
+
+var scripts string
+
+func init() {
+	var ok bool
+	_, file, _, ok := runtime.Caller(0)
+	if !ok {
+		log.Panic("package path not found")
+	}
+	pkgpath = filepath.Dir(file)
+	scripts = filepath.Join(pkgpath, "scripts")
+}
+func TestRun(t *testing.T) {
+	tests := []struct {
+		name    string
+		args    []string
+		want    []byte
+		wantErr bool
+	}{
+		{"dojs", []string{filepath.Join(scripts, "test.jsx"), filepath.Join(scripts, "test.txt"), "arg1", "arg2"},
+			[]byte(filepath.Join(scripts, "test.txt") + "\r\narg1\r\narg2\r\n"), false},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			_, err := Run(tt.name, tt.args...)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("Run() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			f, err := os.Open(tt.args[1])
+			if err != nil {
+				t.Error(err)
+				return
+			}
+			got, err := ioutil.ReadAll(f)
+			if err != nil {
+				t.Error(err)
+				return
+			}
+			if string(got) != string(tt.want) {
+				t.Errorf("Run() = \n%v, want \n%v", string(got), string(tt.want))
+			}
+		})
+	}
+}
--- a/runner/scripts/PsIsOpen.vbs
+++ b/runner/scripts/PsIsOpen.vbs
--- a/runner/scripts/action.vbs
+++ b/runner/scripts/action.vbs
--- a/runner/scripts/activeDocName.jsx
+++ b/runner/scripts/activeDocName.jsx
--- a/runner/scripts/applyDataset.jsx
+++ b/runner/scripts/applyDataset.jsx
--- a/runner/scripts/close.vbs
+++ b/runner/scripts/close.vbs
--- a/runner/scripts/colorLayer.vbs
+++ b/runner/scripts/colorLayer.vbs
--- a/runner/scripts/colorStroke.vbs
+++ b/runner/scripts/colorStroke.vbs
--- a/runner/scripts/compilejs.jsx
+++ b/runner/scripts/compilejs.jsx
--- a/runner/scripts/dojs.vbs
+++ b/runner/scripts/dojs.vbs
--- a/runner/scripts/fmtText.jsx
+++ b/runner/scripts/fmtText.jsx
--- a/runner/scripts/getActiveDoc.jsx
+++ b/runner/scripts/getActiveDoc.jsx
--- a/runner/scripts/getLayer.jsx
+++ b/runner/scripts/getLayer.jsx
@@ -0,0 +1,6 @@
+#include lib.js
+app.displayDialogs=DialogModes.NO
+var stdout = newFile(arguments[0]);
+var lyr = eval(arguments[1]);
+var lyrs = [lyr];
+stdout.writeln(layers(lyrs))
--- a/runner/scripts/getLayerSet.jsx
+++ b/runner/scripts/getLayerSet.jsx
@@ -6,22 +6,6 @@ stdout.flush();
 var str = layers(set.artLayers);
 str = str.replace(/\r/g, "\\r");
 stdout.writeln(str);
-/*
-for (var i = 0; i < set.artLayers.length; i++) {
-	var lyr = set.artLayers[i];
-	stdout.write(('{"Name":"' + lyr.name + '", "Bounds": [[' + lyr.bounds[0] + ',' +
-		lyr.bounds[1] + '],[' + lyr.bounds[2] + ',' + 
-	    lyr.bounds[3] + ']], "Visible": ' + lyr.visible + ',"Text":').replace(/ px/g, ""));
-	if (lyr.kind == LayerKind.TEXT)
-		stdout.write('"'+lyr.textItem.contents.replace(/\r/g, "\\r")+'"');
-	else
-		stdout.write("null");
-	stdout.write("}")
-	if (i != set.artLayers.length - 1)
-		stdout.writeln(",");
-	stdout.flush();
-}
-*/
 stdout.writeln("]");
 stdout.write(', "LayerSets": [')
 for (var i = 0; i < set.layerSets.length; i++) {
--- a/runner/scripts/isVisible.jsx
+++ b/runner/scripts/isVisible.jsx
--- a/runner/scripts/layerSetBounds.jsx
+++ b/runner/scripts/layerSetBounds.jsx
--- a/runner/scripts/lib.js
+++ b/runner/scripts/lib.js
--- a/runner/scripts/moveLayer.jsx
+++ b/runner/scripts/moveLayer.jsx
--- a/runner/scripts/open.vbs
+++ b/runner/scripts/open.vbs
--- a/runner/scripts/quit.vbs
+++ b/runner/scripts/quit.vbs
--- a/runner/scripts/save.vbs
+++ b/runner/scripts/save.vbs
--- a/runner/scripts/start.vbs
+++ b/runner/scripts/start.vbs
--- a/runner/scripts/test.jsx
+++ b/runner/scripts/test.jsx
@@ -0,0 +1,6 @@
+#include lib.js
+var f = newFile(arguments[0]);
+for (var i = 0; i < arguments.length; i++) {
+	f.writeln(arguments[i]);
+}
+f.close();
--- a/runner/scripts/test.txt
+++ b/runner/scripts/test.txt
@@ -0,0 +1,3 @@
+C:\Users\Spencer\go\src\github.com\sbrow\ps\runner\scripts\test.txt
+arg1
+arg2
--- a/runner/scripts/test.vbs
+++ b/runner/scripts/test.vbs
--- a/scripts/getLayer.jsx
+++ b/scripts/getLayer.jsx
@@ -1,18 +0,0 @@
-#include lib.js
-app.displayDialogs=DialogModes.NO
-var stdout = newFile(arguments[0]);
-var lyr = eval(arguments[1]);
-var lyrs = [lyr];
-stdout.writeln(layers(lyrs))
-/*
-stdout.write(('{"Name":"' + lyr.name + '","Bounds":[[' + lyr.bounds[0] + ',' +
-	lyr.bounds[1] + '],[' + lyr.bounds[2] + ',' + 
-    lyr.bounds[3] + ']],"Visible":' + lyr.visible+',"Text":').replace(/ px/g, ""));
-if (lyr.kind == LayerKind.TEXT) {
-	stdout.write('"'+lyr.textItem.contents.replace(/\r/g, "\\r")+'"');
-}
-else
-	stdout.write(null)
-stdout.writeln('}')
-stdout.close();
-*/
--- a/scripts/test.jsx
+++ b/scripts/test.jsx
@@ -1,12 +0,0 @@
-#include lib.js
-
-// var saveFile = File(arguments[0]);
-var arg = "app.activeDocument.layerSets.getByName('Text').artLayers.getByName('short').textItem.contents='When another sandman is discarded from a lane,';";
-var set = eval(arg);
-// set.textItem.size=10;
-// var doc=app.activeDocument
-// doc.layerSets.getByName("ResolveGem").merge();
-// alert(doc.artLayers.getByName("ResolveGem").bounds); 
-// doc.activeHistoryState=doc.historyStates[doc.historyStates.length-2]
-// setFormatting(0,6, "Arial", "Bold");
-// saveFile.close();
--- a/textlayer.go
+++ b/textlayer.go
@@ -7,26 +7,30 @@ import (
 	"strings"
 )

+// TextItem holds the text element of a TextLayer.
 type TextItem struct {
 	contents string
 	size     float64
-	// color    Color
 	font     string
 	parent   *ArtLayer
 }

+// TextItemJSON is the exported version of TextItem
+// that allows it to be marshaled and unmarshaled
+// into JSON.
 type TextItemJSON struct {
 	Contents string
 	Size     float64
-	// Color    [3]int
 	Font     string
 }

-func (t *TextItem) Contents() string {
+// Contents returns the raw text of the TextItem.
+func (t TextItem) Contents() string {
 	return t.contents
 }

-func (t *TextItem) Size() float64 {
+// Size returns the font size of the TextItem
+func (t TextItem) Size() float64 {
 	return t.size
 }

@@ -36,34 +40,38 @@ func (t *TextItem) MarshalJSON() ([]byte, error) {
 	return json.Marshal(&TextItemJSON{
 		Contents: t.contents,
 		Size:     t.size,
-		// Color:    t.color.RGB(),
 		Font:     t.font,
 	})
 }

-func (t *TextItem) UnmarshalJSON(b []byte) error {
+// UnmarshalJSON loads the JSON data into the TextItem
+func (t *TextItem) UnmarshalJSON(data []byte) error {
 	tmp := &TextItemJSON{}
-	if err := json.Unmarshal(b, &tmp); err != nil {
+	if err := json.Unmarshal(data, &tmp); err != nil {
 		return err
 	}
 	t.contents = tmp.Contents
 	t.size = tmp.Size
-	// t.color = RGB{tmp.Color[0], tmp.Color[1], tmp.Color[2]}
 	t.font = tmp.Font
 	return nil
 }

+// SetText sets the text to the given string.
 func (t *TextItem) SetText(txt string) {
 	if txt == t.contents {
 		return
 	}
+	var err error
 	lyr := strings.TrimRight(JSLayer(t.parent.Path()), ";")
 	bndtext := "[[' + lyr.bounds[0] + ',' + lyr.bounds[1] + '],[' + lyr.bounds[2] + ',' + lyr.bounds[3] + ']]"
 	js := fmt.Sprintf(`%s.textItem.contents='%s';var lyr = %[1]s;stdout.writeln(('%[3]s').replace(/ px/g, ''));`,
 		lyr, txt, bndtext)
-	byt, err := DoJs("compilejs.jsx", js)
+	var byt []byte
+	if byt, err = DoJS("compilejs.jsx", js); err != nil {
+		log.Panic(err)
+	}
 	var bnds *[2][2]int
-	json.Unmarshal(byt, &bnds)
+	err = json.Unmarshal(byt, &bnds)
 	if err != nil || bnds == nil {
 		log.Println("text:", txt)
 		log.Println("js:", js)
@@ -74,26 +82,26 @@ func (t *TextItem) SetText(txt string) {
 	t.parent.bounds = *bnds
 }

+// SetSize sets the size of the TextItem's font.
 func (t *TextItem) SetSize(s float64) {
 	if t.size == s {
 		return
 	}
 	lyr := strings.TrimRight(JSLayer(t.parent.Path()), ";")
 	js := fmt.Sprintf("%s.textItem.size=%f;", lyr, s)
-	_, err := DoJs("compilejs.jsx", js)
+	_, err := DoJS("compilejs.jsx", js)
 	if err != nil {
 		t.size = s
 	}
 }

-// TODO: Documentation for Format(), make to textItem
+// Fmt applies the given font and style to all characters
+// in the range [start, end].
 func (t *TextItem) Fmt(start, end int, font, style string) {
-	var err error
 	if !t.parent.Visible() {
 		return
 	}
-	_, err = DoJs("fmtText.jsx", fmt.Sprint(start), fmt.Sprint(end),
-		font, style)
+	_, err := DoJS("fmtText.jsx", fmt.Sprint(start), fmt.Sprint(end), font, style)
 	if err != nil {
 		log.Panic(err)
 	}