Added initial working main.go

main.go

@@ -0,0 +1,74 @@
+package main
+
+import (
+	"bufio"
+	"html/template"
+	"os"
+	"regexp"
+	"strings"
+)
+
+var replacer *strings.Replacer
+
+func init() {
+	replacer = strings.NewReplacer(":", ".",
+		"]", "",
+		"}", "",
+		"{", "",
+		"\"", "",
+		")", "",
+		"(", "",
+		"[", "",
+		",", "",
+		"var.", "",
+		" ", "",
+	)
+}
+
+var varTemplate = template.Must(template.New("var_file").Parse(`{{ range . }} variable "{{ . }}" {
+   description  = ""
+}
+{{end}}
+`))
+
+var var_prefix = "var."
+
+type TerraformVars struct {
+	Variables []string
+}
+
+func contains(slice []string, value string) bool {
+	if len(slice) == 0 {
+		return false
+	}
+	for _, s := range slice {
+		if value == s {
+			return true
+		}
+	}
+	return false
+}
+
+func main() {
+	var parsed_vars []string
+	fileHandle, _ := os.Open("test.tf")
+	defer fileHandle.Close()
+	fileScanner := bufio.NewScanner(fileHandle)
+
+	for fileScanner.Scan() {
+		if strings.Contains(fileScanner.Text(), var_prefix) {
+			pattern := regexp.MustCompile(`var.([a-z?_]+)`)
+			match := pattern.FindAllStringSubmatch(fileScanner.Text(), 1)
+			if len(match) != 0 {
+				res := replacer.Replace(match[0][0])
+				if !contains(parsed_vars, res) {
+					parsed_vars = append(parsed_vars, res)
+				}
+			}
+		}
+	}
+	err := varTemplate.Execute(os.Stdout, parsed_vars)
+	if err != nil {
+		panic(err)
+	}
+}