From 626624af7b571e693c1006456ecddfdc464613d5 Mon Sep 17 00:00:00 2001
From: Mike Farah <mikefarah@gmail.com>
Date: Tue, 16 Dec 2025 14:17:38 +1100
Subject: [PATCH] Adding tf to hcl format names

---
 .gitignore                        |  1 +
 acceptance_tests/inputs-format.sh | 58 +++++++++++++++++++++++++++++++
 examples/sample.tf                | 27 ++++++++++++++
 pkg/yqlib/format.go               |  2 +-
 4 files changed, 87 insertions(+), 1 deletion(-)
 create mode 100644 examples/sample.tf

diff --git a/.gitignore b/.gitignore
index 8bedd020..f51c4d8c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -43,6 +43,7 @@ yq*.snap
 
 test.yml
 test*.yml
+test*.tf
 test*.xml
 test*.toml
 test*.yaml
diff --git a/acceptance_tests/inputs-format.sh b/acceptance_tests/inputs-format.sh
index 60d0bd11..282b5287 100755
--- a/acceptance_tests/inputs-format.sh
+++ b/acceptance_tests/inputs-format.sh
@@ -6,6 +6,7 @@ setUp() {
   rm test*.csv 2>/dev/null || true
   rm test*.tsv 2>/dev/null || true
   rm test*.xml 2>/dev/null || true
+  rm test*.tf 2>/dev/null || true
 }
 
 testInputProperties() {
@@ -255,4 +256,61 @@ EOM
   assertEquals "$expected" "$X"
 }
 
+testInputTerraform() {
+  cat >test.tf <<EOL
+resource "aws_s3_bucket" "example" {
+  bucket = "my-bucket"
+  tags = {
+    Environment = "Dev"
+    Project = "Test"
+  }
+}
+EOL
+
+  read -r -d '' expected << EOM
+resource "aws_s3_bucket" "example" {
+  bucket = "my-bucket"
+  tags = {
+    Environment = "Dev"
+    Project = "Test"
+  }
+}
+EOM
+
+  X=$(./yq test.tf)
+  assertEquals "$expected" "$X"
+
+  X=$(./yq ea test.tf)
+  assertEquals "$expected" "$X"
+}
+
+testInputTerraformGithubAction() {
+  cat >test.tf <<EOL
+resource "aws_s3_bucket" "example" {
+  bucket = "my-bucket"
+  
+  tags = {
+    Environment = "Dev"
+    Project = "Test"
+  }
+}
+EOL
+
+  read -r -d '' expected << EOM
+resource "aws_s3_bucket" "example" {
+  bucket = "my-bucket"
+  tags = {
+    Environment = "Dev"
+    Project = "Test"
+  }
+}
+EOM
+
+  X=$(cat /dev/null | ./yq test.tf)
+  assertEquals "$expected" "$X"
+
+  X=$(cat /dev/null | ./yq ea test.tf)
+  assertEquals "$expected" "$X"
+}
+
 source ./scripts/shunit2
\ No newline at end of file
diff --git a/examples/sample.tf b/examples/sample.tf
new file mode 100644
index 00000000..92135137
--- /dev/null
+++ b/examples/sample.tf
@@ -0,0 +1,27 @@
+# main.tf
+
+# Define required providers and minimum Terraform version
+terraform {
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "~> 5.0"
+    }
+  }
+  required_version = ">= 1.2"
+}
+
+# Configure the AWS provider
+provider "aws" {
+  region = var.aws_region
+}
+
+# Define an S3 bucket resource
+resource "aws_s3_bucket" "example_bucket" {
+  bucket = var.bucket_name
+
+  tags = {
+    Environment = "Development"
+    Project     = "TerraformExample"
+  }
+}
diff --git a/pkg/yqlib/format.go b/pkg/yqlib/format.go
index 811047d5..edb7ce46 100644
--- a/pkg/yqlib/format.go
+++ b/pkg/yqlib/format.go
@@ -67,7 +67,7 @@ var TomlFormat = &Format{"toml", []string{},
 	func() Decoder { return NewTomlDecoder() },
 }
 
-var HclFormat = &Format{"hcl", []string{"h"},
+var HclFormat = &Format{"hcl", []string{"h", "tf"},
 	func() Encoder { return NewHclEncoder(ConfiguredHclPreferences) },
 	func() Decoder { return NewHclDecoder() },
 }