printer: add spacewidth support

printer/nodes.go

@@ -70,7 +70,7 @@ func (p *printer) printObjectType(o *ast.ObjectType) []byte {
 	buf.WriteByte(newline)
 
 	for _, item := range o.List.Items {
-		buf.Write(indent(p.printObjectItem(item)))
+		buf.Write(p.indent(p.printObjectItem(item)))
 		buf.WriteByte(newline)
 	}
 
@@ -110,12 +110,19 @@ func writeBlank(buf io.ByteWriter, indent int) {
 	}
 }
 
-func indent(buf []byte) []byte {
+func (p *printer) indent(buf []byte) []byte {
+	prefix := []byte{tab}
+	if p.cfg.SpaceWidth != 0 {
+		for i := 0; i < p.cfg.SpaceWidth; i++ {
+			prefix = append(prefix, blank)
+		}
+	}
+
 	var res []byte
 	bol := true
 	for _, c := range buf {
 		if bol && c != '\n' {
-			res = append(res, []byte{tab}...)
+			res = append(res, prefix...)
 		}
 		res = append(res, c)
 		bol = c == '\n'

printer/testdata/complexhcl.golden

@@ -36,4 +36,4 @@ resource "aws_instance" "db" = {
 
 output "web_ip" = {
 	value = "${aws_instance.web.private_ip}"
-}
+}

testdata/complex.hcl

@@ -1,42 +0,0 @@
-// This comes from Terraform, as a test
-variable "foo" {
-    default = "bar"
-    description = "bar"
-}
-
-provider "aws" {
-  access_key = "foo"
-  secret_key = "bar"
-}
-
-provider "do" {
-  api_key = "${var.foo}"
-}
-
-resource "aws_security_group" "firewall" {
-    count = 5
-}
-
-resource aws_instance "web" {
-    ami = "${var.foo}"
-    security_groups = [
-        "foo",
-        "${aws_security_group.firewall.foo}"
-    ]
-
-    network_interface {
-        device_index = 0
-        description = "Main network interface"
-    }
-}
-
-resource "aws_instance" "db" {
-    security_groups = "${aws_security_group.firewall.*.id}"
-    VPC = "foo"
-
-    depends_on = ["aws_instance.web"]
-}
-
-output "web_ip" {
-    value = "${aws_instance.web.private_ip}"
-}