TomlTree.ToMap (#59)

* Extract TomlTree conversion to its own file

* Implement ToMap

* Reorder imports in tomltree_conversions

toml.go

@@ -6,9 +6,7 @@ import (
 	"io"
 	"os"
 	"runtime"
-	"strconv"
 	"strings"
-	"time"
 )
 
 type tomlValue struct {
@@ -248,106 +246,6 @@ func (t *TomlTree) createSubTree(keys []string, pos Position) error {
 	return nil
 }
 
-// encodes a string to a TOML-compliant string value
-func encodeTomlString(value string) string {
-	result := ""
-	for _, rr := range value {
-		intRr := uint16(rr)
-		switch rr {
-		case '\b':
-			result += "\\b"
-		case '\t':
-			result += "\\t"
-		case '\n':
-			result += "\\n"
-		case '\f':
-			result += "\\f"
-		case '\r':
-			result += "\\r"
-		case '"':
-			result += "\\\""
-		case '\\':
-			result += "\\\\"
-		default:
-			if intRr < 0x001F {
-				result += fmt.Sprintf("\\u%0.4X", intRr)
-			} else {
-				result += string(rr)
-			}
-		}
-	}
-	return result
-}
-
-// Value print support function for ToString()
-// Outputs the TOML compliant string representation of a value
-func toTomlValue(item interface{}, indent int) string {
-	tab := strings.Repeat(" ", indent)
-	switch value := item.(type) {
-	case int64:
-		return tab + strconv.FormatInt(value, 10)
-	case float64:
-		return tab + strconv.FormatFloat(value, 'f', -1, 64)
-	case string:
-		return tab + "\"" + encodeTomlString(value) + "\""
-	case bool:
-		if value {
-			return "true"
-		}
-		return "false"
-	case time.Time:
-		return tab + value.Format(time.RFC3339)
-	case []interface{}:
-		result := tab + "[\n"
-		for _, item := range value {
-			result += toTomlValue(item, indent+2) + ",\n"
-		}
-		return result + tab + "]"
-	default:
-		panic(fmt.Sprintf("unsupported value type: %v", value))
-	}
-}
-
-// Recursive support function for ToString()
-// Outputs a tree, using the provided keyspace to prefix group names
-func (t *TomlTree) toToml(indent, keyspace string) string {
-	result := ""
-	for k, v := range t.values {
-		// figure out the keyspace
-		combinedKey := k
-		if keyspace != "" {
-			combinedKey = keyspace + "." + combinedKey
-		}
-		// output based on type
-		switch node := v.(type) {
-		case []*TomlTree:
-			for _, item := range node {
-				if len(item.Keys()) > 0 {
-					result += fmt.Sprintf("\n%s[[%s]]\n", indent, combinedKey)
-				}
-				result += item.toToml(indent+"  ", combinedKey)
-			}
-		case *TomlTree:
-			if len(node.Keys()) > 0 {
-				result += fmt.Sprintf("\n%s[%s]\n", indent, combinedKey)
-			}
-			result += node.toToml(indent+"  ", combinedKey)
-		case map[string]interface{}:
-			sub := TreeFromMap(node)
-
-			if len(sub.Keys()) > 0 {
-				result += fmt.Sprintf("\n%s[%s]\n", indent, combinedKey)
-			}
-			result += sub.toToml(indent+"  ", combinedKey)
-		case *tomlValue:
-			result += fmt.Sprintf("%s%s = %s\n", indent, k, toTomlValue(node.value, 0))
-		default:
-			result += fmt.Sprintf("%s%s = %s\n", indent, k, toTomlValue(v, 0))
-		}
-	}
-	return result
-}
-
 // Query compiles and executes a query on a tree and returns the query result.
 func (t *TomlTree) Query(query string) (*QueryResult, error) {
 	q, err := CompileQuery(query)
@@ -357,12 +255,6 @@ func (t *TomlTree) Query(query string) (*QueryResult, error) {
 	return q.Execute(t), nil
 }
 
-// ToString generates a human-readable representation of the current tree.
-// Output spans multiple lines, and is suitable for ingest by a TOML parser
-func (t *TomlTree) ToString() string {
-	return t.toToml("", "")
-}
-
 // LoadReader creates a TomlTree from any io.Reader.
 func LoadReader(reader io.Reader) (tree *TomlTree, err error) {
 	defer func() {