Support attributes without quotes (#20)

* Support alternative assignment syntax

* Add tests

* Update regex

Author: taurelius

README.md

@@ -1,24 +1,20 @@
-<!-- 
-
-
-
-
-
-
-
+# tfmask [![Build Status](https://travis-ci.org/cloudposse/tfmask.svg?branch=master)](https://travis-ci.org/cloudposse/tfmask) [![Latest Release](https://img.shields.io/github/release/cloudposse/tfmask.svg)](https://github.com/cloudposse/tfmask/releases/latest) [![Slack Community](https://slack.cloudposse.com/badge.svg)](https://slack.cloudposse.com)
 
+[![README Header][readme_header_img]][readme_header_link]
 
+[![Cloud Posse][logo]](https://cpco.io/homepage)
 
+<!--
 
 
 
 
   ** DO NOT EDIT THIS FILE
-  ** 
-  ** This file was automatically generated by the `build-harness`. 
-  ** 1) Make all changes to `README.yaml` 
+  **
+  ** This file was automatically generated by the `build-harness`.
+  ** 1) Make all changes to `README.yaml`
   ** 2) Run `make init` (you only need to do this once)
-  ** 3) Run`make readme` to rebuild this file. 
+  ** 3) Run`make readme` to rebuild this file.
   **
   ** (We maintain HUNDREDS of open source projects. This is how we maintain our sanity.)
   **
@@ -27,30 +23,14 @@
 
 
 
-
-
-
-
-
-
-
-
-
-
-  -->
-[![README Header][readme_header_img]][readme_header_link]
-
-[![Cloud Posse][logo]](https://cpco.io/homepage)
-
-# tfmask [![Build Status](https://travis-ci.org/cloudposse/tfmask.svg?branch=master)](https://travis-ci.org/cloudposse/tfmask) [![Latest Release](https://img.shields.io/github/release/cloudposse/tfmask.svg)](https://github.com/cloudposse/tfmask/releases/latest) [![Slack Community](https://slack.cloudposse.com/badge.svg)](https://slack.cloudposse.com)
-
+-->
 
 Command line utility to mask sensitive output from a `transform plan` or `terraform apply`.
 
 
 ---
 
-This project is part of our comprehensive ["SweetOps"](https://cpco.io/sweetops) approach towards DevOps. 
+This project is part of our comprehensive ["SweetOps"](https://cpco.io/sweetops) approach towards DevOps.
 [<img align="right" title="Share via Email" src="https://docs.cloudposse.com/images/ionicons/ios-email-outline-2.0.1-16x16-999999.svg"/>][share_email]
 [<img align="right" title="Share on Google+" src="https://docs.cloudposse.com/images/ionicons/social-googleplus-outline-2.0.1-16x16-999999.svg" />][share_googleplus]
 [<img align="right" title="Share on Facebook" src="https://docs.cloudposse.com/images/ionicons/social-facebook-outline-2.0.1-16x16-999999.svg" />][share_facebook]
@@ -126,7 +106,7 @@ Example `.envrc`:
 ```sh
 # Export terraform environment
 export TFMASK_CHAR="#"
-export TFMASK_VALUES_REGEX="(?i)^.*(oauth|secret|token|password|key|result).*$"
+export TFMASK_VALUES_REGEX="(?i)^.*[^a-zA-Z](oauth|secret|token|password|key|result|id).*$"
 ```
 
 <details>
@@ -243,9 +223,9 @@ terraform apply -no-color | tfmask
 
 
 
-## Share the Love 
+## Share the Love
 
-Like this project? Please give it a ★ on [our GitHub](https://github.com/cloudposse/tfmask)! (it helps us **a lot**) 
+Like this project? Please give it a ★ on [our GitHub](https://github.com/cloudposse/tfmask)! (it helps us **a lot**)
 
 Are you using this project or any of our other projects? Consider [leaving a testimonial][testimonial]. =)
 
@@ -264,7 +244,7 @@ Check out these related projects.
 
 ## Help
 
-**Got a question?** We got answers. 
+**Got a question?** We got answers.
 
 File a GitHub [issue](https://github.com/cloudposse/tfmask/issues), send us an [email][email] or join our [Slack Community][slack].
 
@@ -273,7 +253,7 @@ File a GitHub [issue](https://github.com/cloudposse/tfmask/issues), send us an [
 ## DevOps Accelerator for Startups
 
 
-We are a [**DevOps Accelerator**][commercial_support]. We'll help you build your cloud infrastructure from the ground up so you can own it. Then we'll show you how to operate it and stick around for as long as you need us. 
+We are a [**DevOps Accelerator**][commercial_support]. We'll help you build your cloud infrastructure from the ground up so you can own it. Then we'll show you how to operate it and stick around for as long as you need us.
 
 [![Learn More](https://img.shields.io/badge/learn%20more-success.svg?style=for-the-badge)][commercial_support]
 
@@ -302,11 +282,11 @@ Participate in our [Discourse Forums][discourse]. Here you'll find answers to co
 
 ## Newsletter
 
-Sign up for [our newsletter][newsletter] that covers everything on our technology radar.  Receive updates on what we're up to on GitHub as well as awesome new projects we discover. 
+Sign up for [our newsletter][newsletter] that covers everything on our technology radar.  Receive updates on what we're up to on GitHub as well as awesome new projects we discover.
 
 ## Office Hours
 
-[Join us every Wednesday via Zoom][office_hours] for our weekly "Lunch & Learn" sessions. It's **FREE** for everyone! 
+[Join us every Wednesday via Zoom][office_hours] for our weekly "Lunch & Learn" sessions. It's **FREE** for everyone!
 
 [![zoom](https://img.cloudposse.com/fit-in/200x200/https://cloudposse.com/wp-content/uploads/2019/08/Powered-by-Zoom.png")][office_hours]
 
@@ -337,9 +317,9 @@ Copyright © 2017-2020 [Cloud Posse, LLC](https://cpco.io/copyright)
 
 
 
-## License 
+## License
 
-[![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0) 
+[![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 
 See [LICENSE](LICENSE) for full details.
 
@@ -380,7 +360,7 @@ This project is maintained and funded by [Cloud Posse, LLC][website]. Like it? P
 
 We're a [DevOps Professional Services][hire] company based in Los Angeles, CA. We ❤️  [Open Source Software][we_love_open_source].
 
-We offer [paid support][commercial_support] on all of our projects.  
+We offer [paid support][commercial_support] on all of our projects.
 
 Check out [our other projects][github], [follow us on twitter][twitter], [apply for a job][jobs], or [hire us][hire] to help with your cloud strategy and implementation.
 

README.yaml

@@ -83,7 +83,7 @@ usage: |-
   ```sh
   # Export terraform environment
   export TFMASK_CHAR="#"
-  export TFMASK_VALUES_REGEX="(?i)^.*(oauth|secret|token|password|key|result).*$"
+  export TFMASK_VALUES_REGEX="(?i)^.*[^a-zA-Z](oauth|secret|token|password|key|result|id).*$"
   ```
 
   <details>

main.go

@@ -25,11 +25,11 @@ type match struct {
 }
 
 type keyValueMatch struct {
-	leadingWhitespace        string
-	property                 string
-	trailingWhitespaceBefore string
-	trailingWhitespaceAfter  string
-	oldValue                 string
+	leadingWhitespace       string
+	property                string
+	assignmentOperator      string
+	trailingWhitespaceAfter string
+	oldValue                string
 }
 
 type expression struct {
@@ -68,7 +68,7 @@ var versionedExpressions = map[string]expression{
 			"^([~/+-]+) (.*?) +(.*)$",
 		),
 		reMapKeyPair: regexp.MustCompile(
-			"(?i)^(\\s+(?:[~+-] )?)\"(.*)\"(\\s+)=(\\s+)\"(.*)\"$",
+			"(?i)^(\\s+(?:[~+-] )?)(.*)(\\s?[=:])(\\s+)\"(.*)\"$",
 		),
 		resourceIndex: 2,
 		assign:        ":",
@@ -85,7 +85,7 @@ var versionedExpressions = map[string]expression{
 			"^([~/+-]+) (.*?) +(.*) (.*) (.*)$",
 		),
 		reMapKeyPair: regexp.MustCompile(
-			"(?i)^(\\s+(?:[~+-] )?)\"(.*)\"(\\s+)=(\\s+)\"(.*)\"$",
+			"(?i)^(\\s+(?:[~+-] )?)(.*)(\\s=)(\\s+)\"(.*)\"$",
 		),
 		resourceIndex: 3,
 		assign:        "=",
@@ -100,7 +100,7 @@ func main() {
 	var tfmaskChar = getEnv("TFMASK_CHAR", "*")
 	// Pattern representing sensitive output
 	var tfmaskValuesRegex = getEnv("TFMASK_VALUES_REGEX",
-		"(?i)^.*(oauth|secret|token|password|key|result|id).*$")
+		"(?i)^.*[^a-zA-Z](oauth|secret|token|password|key|result|id).*$")
 	// Pattern representing sensitive resource
 	var tfmaskResourceRegex = getEnv("TFMASK_RESOURCES_REGEX",
 		"(?i)^(random_id|random_string).*$")
@@ -192,11 +192,11 @@ func matchFromLine(reTfPlanLine *regexp.Regexp, line string) match {
 func matchFromAssignment(reMapKeyPair *regexp.Regexp, line string) keyValueMatch {
 	subMatch := reMapKeyPair.FindStringSubmatch(line)
 	return keyValueMatch{
-		leadingWhitespace:        subMatch[1],
-		property:                 subMatch[2],
-		trailingWhitespaceBefore: subMatch[3],
-		trailingWhitespaceAfter:  subMatch[4],
-		oldValue:                 subMatch[5],
+		leadingWhitespace:       subMatch[1],
+		property:                subMatch[2],
+		assignmentOperator:      subMatch[3],
+		trailingWhitespaceAfter: subMatch[4],
+		oldValue:                subMatch[5],
 	}
 }
 
@@ -222,10 +222,10 @@ func assignmentLine(reMapKeyPair, reTfValues *regexp.Regexp, tfmaskChar, line st
 	match := matchFromAssignment(reMapKeyPair, line)
 	if reTfValues.MatchString(match.property) {
 		maskedValue := maskValue(match.oldValue, tfmaskChar)
-		line = fmt.Sprintf("%v\"%v\"%v=%v\"%v\"",
+		line = fmt.Sprintf("%v%v%v%v\"%v\"",
 			match.leadingWhitespace,
 			match.property,
-			match.trailingWhitespaceBefore,
+			match.assignmentOperator,
 			match.trailingWhitespaceAfter,
 			maskedValue)
 	}

main_test.go

@@ -173,12 +173,28 @@ var assignmentTests = []struct {
 	expectedResult string
 	minorVersion   string
 }{
+	// tf 0.11 ------------------------------------
+	{
+		" + client_secret: \"123456\"",
+		" + client_secret: \"******\"",
+		"0.11",
+	},
+	{
+		" + client_secret = \"123456\"",
+		" + client_secret = \"******\"",
+		"0.11",
+	},
 	// tf 0.12 ------------------------------------
 	{
 		" + \"foo_secret\" = \"123456\"",
 		" + \"foo_secret\" = \"******\"",
 		"0.12",
 	},
+	{
+		" + foo_secret = \"123456\"",
+		" + foo_secret = \"******\"",
+		"0.12",
+	},
 	{
 		" - \"foo_secret\" = \"123456\"",
 		" - \"foo_secret\" = \"******\"",
@@ -205,7 +221,7 @@ func TestAssignmentLine(t *testing.T) {
 	// Character used to mask sensitive output
 	var tfmaskChar = "*"
 	// Pattern representing sensitive output
-	var tfmaskValuesRegex = "(?i)^.*(oauth|secret|token|password|key|result|id).*$"
+	var tfmaskValuesRegex = "(?i)^.*[^a-zA-Z](oauth|secret|token|password|key|result|id).*$"
 	reTfValues := regexp.MustCompile(tfmaskValuesRegex)
 
 	for _, assignmentTest := range assignmentTests {