Merge pull request #22 from jrhouston/remove-tf-dep

Remove dependency on terraform project

CHANGELOG.md

@@ -1,3 +1,15 @@
+# 0.1.5
+
+- Remove dependency on terraform in go.mod
+
+# 0.1.4
+
+- Fix empty YAML crash (#21)
+
+# 0.1.3
+
+- Ignore empty documents
+
 # 0.1.2
 
 - Add heredoc syntax for multiline strings (#14)

Makefile

@@ -1,6 +1,6 @@
 .PHONY: build docker docker-push release install test clean
 
-VERSION := 0.1.4
+VERSION := 0.1.5
 DOCKER_IMAGE_NAME := jrhouston/tfk8s
 
 build:
@@ -32,7 +32,7 @@ install:
 	go install -ldflags "-X main.toolVersion=${VERSION}"
 
 test:
-	go test -v
+	go test -v ./...
 
 clean:
 	rm -rf release/*

contrib/hashicorp/terraform/format.go

@@ -0,0 +1,175 @@
+// NOTE this file was lifted verbatim from internal/repl in the terraform project
+// because the FormatValue function became internal in v1.0.0
+
+package terraform
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	"github.com/zclconf/go-cty/cty"
+)
+
+// FormatValue formats a value in a way that resembles Terraform language syntax
+// and uses the type conversion functions where necessary to indicate exactly
+// what type it is given, so that equality test failures can be quickly
+// understood.
+func FormatValue(v cty.Value, indent int) string {
+	if !v.IsKnown() {
+		return "(known after apply)"
+	}
+	if v.IsMarked() {
+		return "(sensitive)"
+	}
+	if v.IsNull() {
+		ty := v.Type()
+		switch {
+		case ty == cty.DynamicPseudoType:
+			return "null"
+		case ty == cty.String:
+			return "tostring(null)"
+		case ty == cty.Number:
+			return "tonumber(null)"
+		case ty == cty.Bool:
+			return "tobool(null)"
+		case ty.IsListType():
+			return fmt.Sprintf("tolist(null) /* of %s */", ty.ElementType().FriendlyName())
+		case ty.IsSetType():
+			return fmt.Sprintf("toset(null) /* of %s */", ty.ElementType().FriendlyName())
+		case ty.IsMapType():
+			return fmt.Sprintf("tomap(null) /* of %s */", ty.ElementType().FriendlyName())
+		default:
+			return fmt.Sprintf("null /* %s */", ty.FriendlyName())
+		}
+	}
+
+	ty := v.Type()
+	switch {
+	case ty.IsPrimitiveType():
+		switch ty {
+		case cty.String:
+			if formatted, isMultiline := formatMultilineString(v, indent); isMultiline {
+				return formatted
+			}
+			return strconv.Quote(v.AsString())
+		case cty.Number:
+			bf := v.AsBigFloat()
+			return bf.Text('f', -1)
+		case cty.Bool:
+			if v.True() {
+				return "true"
+			} else {
+				return "false"
+			}
+		}
+	case ty.IsObjectType():
+		return formatMappingValue(v, indent)
+	case ty.IsTupleType():
+		return formatSequenceValue(v, indent)
+	case ty.IsListType():
+		return fmt.Sprintf("tolist(%s)", formatSequenceValue(v, indent))
+	case ty.IsSetType():
+		return fmt.Sprintf("toset(%s)", formatSequenceValue(v, indent))
+	case ty.IsMapType():
+		return fmt.Sprintf("tomap(%s)", formatMappingValue(v, indent))
+	}
+
+	// Should never get here because there are no other types
+	return fmt.Sprintf("%#v", v)
+}
+
+func formatMultilineString(v cty.Value, indent int) (string, bool) {
+	str := v.AsString()
+	lines := strings.Split(str, "\n")
+	if len(lines) < 2 {
+		return "", false
+	}
+
+	// If the value is indented, we use the indented form of heredoc for readability.
+	operator := "<<"
+	if indent > 0 {
+		operator = "<<-"
+	}
+
+	// Default delimiter is "End Of Text" by convention
+	delimiter := "EOT"
+
+OUTER:
+	for {
+		// Check if any of the lines are in conflict with the delimiter. The
+		// parser allows leading and trailing whitespace, so we must remove it
+		// before comparison.
+		for _, line := range lines {
+			// If the delimiter matches a line, extend it and start again
+			if strings.TrimSpace(line) == delimiter {
+				delimiter = delimiter + "_"
+				continue OUTER
+			}
+		}
+
+		// None of the lines match the delimiter, so we're ready
+		break
+	}
+
+	// Write the heredoc, with indentation as appropriate.
+	var buf strings.Builder
+
+	buf.WriteString(operator)
+	buf.WriteString(delimiter)
+	for _, line := range lines {
+		buf.WriteByte('\n')
+		buf.WriteString(strings.Repeat(" ", indent))
+		buf.WriteString(line)
+	}
+	buf.WriteByte('\n')
+	buf.WriteString(strings.Repeat(" ", indent))
+	buf.WriteString(delimiter)
+
+	return buf.String(), true
+}
+
+func formatMappingValue(v cty.Value, indent int) string {
+	var buf strings.Builder
+	count := 0
+	buf.WriteByte('{')
+	indent += 2
+	for it := v.ElementIterator(); it.Next(); {
+		count++
+		k, v := it.Element()
+		buf.WriteByte('\n')
+		buf.WriteString(strings.Repeat(" ", indent))
+		buf.WriteString(FormatValue(k, indent))
+		buf.WriteString(" = ")
+		buf.WriteString(FormatValue(v, indent))
+	}
+	indent -= 2
+	if count > 0 {
+		buf.WriteByte('\n')
+		buf.WriteString(strings.Repeat(" ", indent))
+	}
+	buf.WriteByte('}')
+	return buf.String()
+}
+
+func formatSequenceValue(v cty.Value, indent int) string {
+	var buf strings.Builder
+	count := 0
+	buf.WriteByte('[')
+	indent += 2
+	for it := v.ElementIterator(); it.Next(); {
+		count++
+		_, v := it.Element()
+		buf.WriteByte('\n')
+		buf.WriteString(strings.Repeat(" ", indent))
+		buf.WriteString(FormatValue(v, indent))
+		buf.WriteByte(',')
+	}
+	indent -= 2
+	if count > 0 {
+		buf.WriteByte('\n')
+		buf.WriteString(strings.Repeat(" ", indent))
+	}
+	buf.WriteByte(']')
+	return buf.String()
+}

contrib/hashicorp/terraform/format_test.go

@@ -0,0 +1,189 @@
+// NOTE this file was lifted verbatim from internal/repl in the terraform project
+// because the FormatValue function became internal in v1.0.0
+
+package terraform
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/zclconf/go-cty/cty"
+)
+
+func TestFormatValue(t *testing.T) {
+	tests := []struct {
+		Val  cty.Value
+		Want string
+	}{
+		{
+			cty.NullVal(cty.DynamicPseudoType),
+			`null`,
+		},
+		{
+			cty.NullVal(cty.String),
+			`tostring(null)`,
+		},
+		{
+			cty.NullVal(cty.Number),
+			`tonumber(null)`,
+		},
+		{
+			cty.NullVal(cty.Bool),
+			`tobool(null)`,
+		},
+		{
+			cty.NullVal(cty.List(cty.String)),
+			`tolist(null) /* of string */`,
+		},
+		{
+			cty.NullVal(cty.Set(cty.Number)),
+			`toset(null) /* of number */`,
+		},
+		{
+			cty.NullVal(cty.Map(cty.Bool)),
+			`tomap(null) /* of bool */`,
+		},
+		{
+			cty.NullVal(cty.Object(map[string]cty.Type{"a": cty.Bool})),
+			`null /* object */`, // Ideally this would display the full object type, including its attributes
+		},
+		{
+			cty.UnknownVal(cty.DynamicPseudoType),
+			`(known after apply)`,
+		},
+		{
+			cty.StringVal(""),
+			`""`,
+		},
+		{
+			cty.StringVal("hello"),
+			`"hello"`,
+		},
+		{
+			cty.StringVal("hello\nworld"),
+			`<<EOT
+hello
+world
+EOT`,
+		},
+		{
+			cty.StringVal("EOR\nEOS\nEOT\nEOU"),
+			`<<EOT_
+EOR
+EOS
+EOT
+EOU
+EOT_`,
+		},
+		{
+			cty.ObjectVal(map[string]cty.Value{"foo": cty.StringVal("boop\nbeep")}),
+			`{
+  "foo" = <<-EOT
+  boop
+  beep
+  EOT
+}`,
+		},
+		{
+			cty.Zero,
+			`0`,
+		},
+		{
+			cty.NumberIntVal(5),
+			`5`,
+		},
+		{
+			cty.NumberIntVal(1234567890),
+			`1234567890`,
+		},
+		{
+			cty.NumberFloatVal(5.2),
+			`5.2`,
+		},
+		{
+			cty.NumberFloatVal(123456789.0),
+			`123456789`,
+		},
+		{
+			cty.NumberFloatVal(123456789.01),
+			`123456789.01`,
+		},
+		{
+			cty.False,
+			`false`,
+		},
+		{
+			cty.True,
+			`true`,
+		},
+		{
+			cty.EmptyObjectVal,
+			`{}`,
+		},
+		{
+			cty.ObjectVal(map[string]cty.Value{
+				"a": cty.StringVal("b"),
+			}),
+			`{
+  "a" = "b"
+}`,
+		},
+		{
+			cty.ObjectVal(map[string]cty.Value{
+				"a": cty.StringVal("b"),
+				"c": cty.StringVal("d"),
+			}),
+			`{
+  "a" = "b"
+  "c" = "d"
+}`,
+		},
+		{
+			cty.MapValEmpty(cty.String),
+			`tomap({})`,
+		},
+		{
+			cty.EmptyTupleVal,
+			`[]`,
+		},
+		{
+			cty.TupleVal([]cty.Value{
+				cty.StringVal("b"),
+			}),
+			`[
+  "b",
+]`,
+		},
+		{
+			cty.TupleVal([]cty.Value{
+				cty.StringVal("b"),
+				cty.StringVal("d"),
+			}),
+			`[
+  "b",
+  "d",
+]`,
+		},
+		{
+			cty.ListValEmpty(cty.String),
+			`tolist([])`,
+		},
+		{
+			cty.SetValEmpty(cty.String),
+			`toset([])`,
+		},
+		{
+			cty.StringVal("sensitive value").Mark("sensitive"),
+			"(sensitive)",
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(fmt.Sprintf("%#v", test.Val), func(t *testing.T) {
+			got := FormatValue(test.Val, 0)
+			if got != test.Want {
+				t.Errorf("wrong result\nvalue: %#v\ngot:   %s\nwant:  %s", test.Val, got, test.Want)
+			}
+		})
+	}
+}