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-rw-r--r--vendor/github.com/pelletier/go-toml/marshal.go1308
1 files changed, 1308 insertions, 0 deletions
diff --git a/vendor/github.com/pelletier/go-toml/marshal.go b/vendor/github.com/pelletier/go-toml/marshal.go
new file mode 100644
index 000000000..3443c3545
--- /dev/null
+++ b/vendor/github.com/pelletier/go-toml/marshal.go
@@ -0,0 +1,1308 @@
+package toml
+
+import (
+ "bytes"
+ "encoding"
+ "errors"
+ "fmt"
+ "io"
+ "reflect"
+ "sort"
+ "strconv"
+ "strings"
+ "time"
+)
+
+const (
+ tagFieldName = "toml"
+ tagFieldComment = "comment"
+ tagCommented = "commented"
+ tagMultiline = "multiline"
+ tagLiteral = "literal"
+ tagDefault = "default"
+)
+
+type tomlOpts struct {
+ name string
+ nameFromTag bool
+ comment string
+ commented bool
+ multiline bool
+ literal bool
+ include bool
+ omitempty bool
+ defaultValue string
+}
+
+type encOpts struct {
+ quoteMapKeys bool
+ arraysOneElementPerLine bool
+}
+
+var encOptsDefaults = encOpts{
+ quoteMapKeys: false,
+}
+
+type annotation struct {
+ tag string
+ comment string
+ commented string
+ multiline string
+ literal string
+ defaultValue string
+}
+
+var annotationDefault = annotation{
+ tag: tagFieldName,
+ comment: tagFieldComment,
+ commented: tagCommented,
+ multiline: tagMultiline,
+ literal: tagLiteral,
+ defaultValue: tagDefault,
+}
+
+type MarshalOrder int
+
+// Orders the Encoder can write the fields to the output stream.
+const (
+ // Sort fields alphabetically.
+ OrderAlphabetical MarshalOrder = iota + 1
+ // Preserve the order the fields are encountered. For example, the order of fields in
+ // a struct.
+ OrderPreserve
+)
+
+var timeType = reflect.TypeOf(time.Time{})
+var marshalerType = reflect.TypeOf(new(Marshaler)).Elem()
+var unmarshalerType = reflect.TypeOf(new(Unmarshaler)).Elem()
+var textMarshalerType = reflect.TypeOf(new(encoding.TextMarshaler)).Elem()
+var textUnmarshalerType = reflect.TypeOf(new(encoding.TextUnmarshaler)).Elem()
+var localDateType = reflect.TypeOf(LocalDate{})
+var localTimeType = reflect.TypeOf(LocalTime{})
+var localDateTimeType = reflect.TypeOf(LocalDateTime{})
+var mapStringInterfaceType = reflect.TypeOf(map[string]interface{}{})
+
+// Check if the given marshal type maps to a Tree primitive
+func isPrimitive(mtype reflect.Type) bool {
+ switch mtype.Kind() {
+ case reflect.Ptr:
+ return isPrimitive(mtype.Elem())
+ case reflect.Bool:
+ return true
+ case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+ return true
+ case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+ return true
+ case reflect.Float32, reflect.Float64:
+ return true
+ case reflect.String:
+ return true
+ case reflect.Struct:
+ return isTimeType(mtype)
+ default:
+ return false
+ }
+}
+
+func isTimeType(mtype reflect.Type) bool {
+ return mtype == timeType || mtype == localDateType || mtype == localDateTimeType || mtype == localTimeType
+}
+
+// Check if the given marshal type maps to a Tree slice or array
+func isTreeSequence(mtype reflect.Type) bool {
+ switch mtype.Kind() {
+ case reflect.Ptr:
+ return isTreeSequence(mtype.Elem())
+ case reflect.Slice, reflect.Array:
+ return isTree(mtype.Elem())
+ default:
+ return false
+ }
+}
+
+// Check if the given marshal type maps to a slice or array of a custom marshaler type
+func isCustomMarshalerSequence(mtype reflect.Type) bool {
+ switch mtype.Kind() {
+ case reflect.Ptr:
+ return isCustomMarshalerSequence(mtype.Elem())
+ case reflect.Slice, reflect.Array:
+ return isCustomMarshaler(mtype.Elem()) || isCustomMarshaler(reflect.New(mtype.Elem()).Type())
+ default:
+ return false
+ }
+}
+
+// Check if the given marshal type maps to a slice or array of a text marshaler type
+func isTextMarshalerSequence(mtype reflect.Type) bool {
+ switch mtype.Kind() {
+ case reflect.Ptr:
+ return isTextMarshalerSequence(mtype.Elem())
+ case reflect.Slice, reflect.Array:
+ return isTextMarshaler(mtype.Elem()) || isTextMarshaler(reflect.New(mtype.Elem()).Type())
+ default:
+ return false
+ }
+}
+
+// Check if the given marshal type maps to a non-Tree slice or array
+func isOtherSequence(mtype reflect.Type) bool {
+ switch mtype.Kind() {
+ case reflect.Ptr:
+ return isOtherSequence(mtype.Elem())
+ case reflect.Slice, reflect.Array:
+ return !isTreeSequence(mtype)
+ default:
+ return false
+ }
+}
+
+// Check if the given marshal type maps to a Tree
+func isTree(mtype reflect.Type) bool {
+ switch mtype.Kind() {
+ case reflect.Ptr:
+ return isTree(mtype.Elem())
+ case reflect.Map:
+ return true
+ case reflect.Struct:
+ return !isPrimitive(mtype)
+ default:
+ return false
+ }
+}
+
+func isCustomMarshaler(mtype reflect.Type) bool {
+ return mtype.Implements(marshalerType)
+}
+
+func callCustomMarshaler(mval reflect.Value) ([]byte, error) {
+ return mval.Interface().(Marshaler).MarshalTOML()
+}
+
+func isTextMarshaler(mtype reflect.Type) bool {
+ return mtype.Implements(textMarshalerType) && !isTimeType(mtype)
+}
+
+func callTextMarshaler(mval reflect.Value) ([]byte, error) {
+ return mval.Interface().(encoding.TextMarshaler).MarshalText()
+}
+
+func isCustomUnmarshaler(mtype reflect.Type) bool {
+ return mtype.Implements(unmarshalerType)
+}
+
+func callCustomUnmarshaler(mval reflect.Value, tval interface{}) error {
+ return mval.Interface().(Unmarshaler).UnmarshalTOML(tval)
+}
+
+func isTextUnmarshaler(mtype reflect.Type) bool {
+ return mtype.Implements(textUnmarshalerType)
+}
+
+func callTextUnmarshaler(mval reflect.Value, text []byte) error {
+ return mval.Interface().(encoding.TextUnmarshaler).UnmarshalText(text)
+}
+
+// Marshaler is the interface implemented by types that
+// can marshal themselves into valid TOML.
+type Marshaler interface {
+ MarshalTOML() ([]byte, error)
+}
+
+// Unmarshaler is the interface implemented by types that
+// can unmarshal a TOML description of themselves.
+type Unmarshaler interface {
+ UnmarshalTOML(interface{}) error
+}
+
+/*
+Marshal returns the TOML encoding of v. Behavior is similar to the Go json
+encoder, except that there is no concept of a Marshaler interface or MarshalTOML
+function for sub-structs, and currently only definite types can be marshaled
+(i.e. no `interface{}`).
+
+The following struct annotations are supported:
+
+ toml:"Field" Overrides the field's name to output.
+ omitempty When set, empty values and groups are not emitted.
+ comment:"comment" Emits a # comment on the same line. This supports new lines.
+ commented:"true" Emits the value as commented.
+
+Note that pointers are automatically assigned the "omitempty" option, as TOML
+explicitly does not handle null values (saying instead the label should be
+dropped).
+
+Tree structural types and corresponding marshal types:
+
+ *Tree (*)struct, (*)map[string]interface{}
+ []*Tree (*)[](*)struct, (*)[](*)map[string]interface{}
+ []interface{} (as interface{}) (*)[]primitive, (*)[]([]interface{})
+ interface{} (*)primitive
+
+Tree primitive types and corresponding marshal types:
+
+ uint64 uint, uint8-uint64, pointers to same
+ int64 int, int8-uint64, pointers to same
+ float64 float32, float64, pointers to same
+ string string, pointers to same
+ bool bool, pointers to same
+ time.LocalTime time.LocalTime{}, pointers to same
+
+For additional flexibility, use the Encoder API.
+*/
+func Marshal(v interface{}) ([]byte, error) {
+ return NewEncoder(nil).marshal(v)
+}
+
+// Encoder writes TOML values to an output stream.
+type Encoder struct {
+ w io.Writer
+ encOpts
+ annotation
+ line int
+ col int
+ order MarshalOrder
+ promoteAnon bool
+ compactComments bool
+ indentation string
+}
+
+// NewEncoder returns a new encoder that writes to w.
+func NewEncoder(w io.Writer) *Encoder {
+ return &Encoder{
+ w: w,
+ encOpts: encOptsDefaults,
+ annotation: annotationDefault,
+ line: 0,
+ col: 1,
+ order: OrderAlphabetical,
+ indentation: " ",
+ }
+}
+
+// Encode writes the TOML encoding of v to the stream.
+//
+// See the documentation for Marshal for details.
+func (e *Encoder) Encode(v interface{}) error {
+ b, err := e.marshal(v)
+ if err != nil {
+ return err
+ }
+ if _, err := e.w.Write(b); err != nil {
+ return err
+ }
+ return nil
+}
+
+// QuoteMapKeys sets up the encoder to encode
+// maps with string type keys with quoted TOML keys.
+//
+// This relieves the character limitations on map keys.
+func (e *Encoder) QuoteMapKeys(v bool) *Encoder {
+ e.quoteMapKeys = v
+ return e
+}
+
+// ArraysWithOneElementPerLine sets up the encoder to encode arrays
+// with more than one element on multiple lines instead of one.
+//
+// For example:
+//
+// A = [1,2,3]
+//
+// Becomes
+//
+// A = [
+// 1,
+// 2,
+// 3,
+// ]
+func (e *Encoder) ArraysWithOneElementPerLine(v bool) *Encoder {
+ e.arraysOneElementPerLine = v
+ return e
+}
+
+// Order allows to change in which order fields will be written to the output stream.
+func (e *Encoder) Order(ord MarshalOrder) *Encoder {
+ e.order = ord
+ return e
+}
+
+// Indentation allows to change indentation when marshalling.
+func (e *Encoder) Indentation(indent string) *Encoder {
+ e.indentation = indent
+ return e
+}
+
+// SetTagName allows changing default tag "toml"
+func (e *Encoder) SetTagName(v string) *Encoder {
+ e.tag = v
+ return e
+}
+
+// SetTagComment allows changing default tag "comment"
+func (e *Encoder) SetTagComment(v string) *Encoder {
+ e.comment = v
+ return e
+}
+
+// SetTagCommented allows changing default tag "commented"
+func (e *Encoder) SetTagCommented(v string) *Encoder {
+ e.commented = v
+ return e
+}
+
+// SetTagMultiline allows changing default tag "multiline"
+func (e *Encoder) SetTagMultiline(v string) *Encoder {
+ e.multiline = v
+ return e
+}
+
+// PromoteAnonymous allows to change how anonymous struct fields are marshaled.
+// Usually, they are marshaled as if the inner exported fields were fields in
+// the outer struct. However, if an anonymous struct field is given a name in
+// its TOML tag, it is treated like a regular struct field with that name.
+// rather than being anonymous.
+//
+// In case anonymous promotion is enabled, all anonymous structs are promoted
+// and treated like regular struct fields.
+func (e *Encoder) PromoteAnonymous(promote bool) *Encoder {
+ e.promoteAnon = promote
+ return e
+}
+
+// CompactComments removes the new line before each comment in the tree.
+func (e *Encoder) CompactComments(cc bool) *Encoder {
+ e.compactComments = cc
+ return e
+}
+
+func (e *Encoder) marshal(v interface{}) ([]byte, error) {
+ // Check if indentation is valid
+ for _, char := range e.indentation {
+ if !isSpace(char) {
+ return []byte{}, fmt.Errorf("invalid indentation: must only contains space or tab characters")
+ }
+ }
+
+ mtype := reflect.TypeOf(v)
+ if mtype == nil {
+ return []byte{}, errors.New("nil cannot be marshaled to TOML")
+ }
+
+ switch mtype.Kind() {
+ case reflect.Struct, reflect.Map:
+ case reflect.Ptr:
+ if mtype.Elem().Kind() != reflect.Struct {
+ return []byte{}, errors.New("Only pointer to struct can be marshaled to TOML")
+ }
+ if reflect.ValueOf(v).IsNil() {
+ return []byte{}, errors.New("nil pointer cannot be marshaled to TOML")
+ }
+ default:
+ return []byte{}, errors.New("Only a struct or map can be marshaled to TOML")
+ }
+
+ sval := reflect.ValueOf(v)
+ if isCustomMarshaler(mtype) {
+ return callCustomMarshaler(sval)
+ }
+ if isTextMarshaler(mtype) {
+ return callTextMarshaler(sval)
+ }
+ t, err := e.valueToTree(mtype, sval)
+ if err != nil {
+ return []byte{}, err
+ }
+
+ var buf bytes.Buffer
+ _, err = t.writeToOrdered(&buf, "", "", 0, e.arraysOneElementPerLine, e.order, e.indentation, e.compactComments, false)
+
+ return buf.Bytes(), err
+}
+
+// Create next tree with a position based on Encoder.line
+func (e *Encoder) nextTree() *Tree {
+ return newTreeWithPosition(Position{Line: e.line, Col: 1})
+}
+
+// Convert given marshal struct or map value to toml tree
+func (e *Encoder) valueToTree(mtype reflect.Type, mval reflect.Value) (*Tree, error) {
+ if mtype.Kind() == reflect.Ptr {
+ return e.valueToTree(mtype.Elem(), mval.Elem())
+ }
+ tval := e.nextTree()
+ switch mtype.Kind() {
+ case reflect.Struct:
+ switch mval.Interface().(type) {
+ case Tree:
+ reflect.ValueOf(tval).Elem().Set(mval)
+ default:
+ for i := 0; i < mtype.NumField(); i++ {
+ mtypef, mvalf := mtype.Field(i), mval.Field(i)
+ opts := tomlOptions(mtypef, e.annotation)
+ if opts.include && ((mtypef.Type.Kind() != reflect.Interface && !opts.omitempty) || !isZero(mvalf)) {
+ val, err := e.valueToToml(mtypef.Type, mvalf)
+ if err != nil {
+ return nil, err
+ }
+ if tree, ok := val.(*Tree); ok && mtypef.Anonymous && !opts.nameFromTag && !e.promoteAnon {
+ e.appendTree(tval, tree)
+ } else {
+ val = e.wrapTomlValue(val, tval)
+ tval.SetPathWithOptions([]string{opts.name}, SetOptions{
+ Comment: opts.comment,
+ Commented: opts.commented,
+ Multiline: opts.multiline,
+ Literal: opts.literal,
+ }, val)
+ }
+ }
+ }
+ }
+ case reflect.Map:
+ keys := mval.MapKeys()
+ if e.order == OrderPreserve && len(keys) > 0 {
+ // Sorting []reflect.Value is not straight forward.
+ //
+ // OrderPreserve will support deterministic results when string is used
+ // as the key to maps.
+ typ := keys[0].Type()
+ kind := keys[0].Kind()
+ if kind == reflect.String {
+ ikeys := make([]string, len(keys))
+ for i := range keys {
+ ikeys[i] = keys[i].Interface().(string)
+ }
+ sort.Strings(ikeys)
+ for i := range ikeys {
+ keys[i] = reflect.ValueOf(ikeys[i]).Convert(typ)
+ }
+ }
+ }
+ for _, key := range keys {
+ mvalf := mval.MapIndex(key)
+ if (mtype.Elem().Kind() == reflect.Ptr || mtype.Elem().Kind() == reflect.Interface) && mvalf.IsNil() {
+ continue
+ }
+ val, err := e.valueToToml(mtype.Elem(), mvalf)
+ if err != nil {
+ return nil, err
+ }
+ val = e.wrapTomlValue(val, tval)
+ if e.quoteMapKeys {
+ keyStr, err := tomlValueStringRepresentation(key.String(), "", "", e.order, e.arraysOneElementPerLine)
+ if err != nil {
+ return nil, err
+ }
+ tval.SetPath([]string{keyStr}, val)
+ } else {
+ tval.SetPath([]string{key.String()}, val)
+ }
+ }
+ }
+ return tval, nil
+}
+
+// Convert given marshal slice to slice of Toml trees
+func (e *Encoder) valueToTreeSlice(mtype reflect.Type, mval reflect.Value) ([]*Tree, error) {
+ tval := make([]*Tree, mval.Len(), mval.Len())
+ for i := 0; i < mval.Len(); i++ {
+ val, err := e.valueToTree(mtype.Elem(), mval.Index(i))
+ if err != nil {
+ return nil, err
+ }
+ tval[i] = val
+ }
+ return tval, nil
+}
+
+// Convert given marshal slice to slice of toml values
+func (e *Encoder) valueToOtherSlice(mtype reflect.Type, mval reflect.Value) (interface{}, error) {
+ tval := make([]interface{}, mval.Len(), mval.Len())
+ for i := 0; i < mval.Len(); i++ {
+ val, err := e.valueToToml(mtype.Elem(), mval.Index(i))
+ if err != nil {
+ return nil, err
+ }
+ tval[i] = val
+ }
+ return tval, nil
+}
+
+// Convert given marshal value to toml value
+func (e *Encoder) valueToToml(mtype reflect.Type, mval reflect.Value) (interface{}, error) {
+ if mtype.Kind() == reflect.Ptr {
+ switch {
+ case isCustomMarshaler(mtype):
+ return callCustomMarshaler(mval)
+ case isTextMarshaler(mtype):
+ b, err := callTextMarshaler(mval)
+ return string(b), err
+ default:
+ return e.valueToToml(mtype.Elem(), mval.Elem())
+ }
+ }
+ if mtype.Kind() == reflect.Interface {
+ return e.valueToToml(mval.Elem().Type(), mval.Elem())
+ }
+ switch {
+ case isCustomMarshaler(mtype):
+ return callCustomMarshaler(mval)
+ case isTextMarshaler(mtype):
+ b, err := callTextMarshaler(mval)
+ return string(b), err
+ case isTree(mtype):
+ return e.valueToTree(mtype, mval)
+ case isOtherSequence(mtype), isCustomMarshalerSequence(mtype), isTextMarshalerSequence(mtype):
+ return e.valueToOtherSlice(mtype, mval)
+ case isTreeSequence(mtype):
+ return e.valueToTreeSlice(mtype, mval)
+ default:
+ switch mtype.Kind() {
+ case reflect.Bool:
+ return mval.Bool(), nil
+ case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+ if mtype.Kind() == reflect.Int64 && mtype == reflect.TypeOf(time.Duration(1)) {
+ return fmt.Sprint(mval), nil
+ }
+ return mval.Int(), nil
+ case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+ return mval.Uint(), nil
+ case reflect.Float32, reflect.Float64:
+ return mval.Float(), nil
+ case reflect.String:
+ return mval.String(), nil
+ case reflect.Struct:
+ return mval.Interface(), nil
+ default:
+ return nil, fmt.Errorf("Marshal can't handle %v(%v)", mtype, mtype.Kind())
+ }
+ }
+}
+
+func (e *Encoder) appendTree(t, o *Tree) error {
+ for key, value := range o.values {
+ if _, ok := t.values[key]; ok {
+ continue
+ }
+ if tomlValue, ok := value.(*tomlValue); ok {
+ tomlValue.position.Col = t.position.Col
+ }
+ t.values[key] = value
+ }
+ return nil
+}
+
+// Create a toml value with the current line number as the position line
+func (e *Encoder) wrapTomlValue(val interface{}, parent *Tree) interface{} {
+ _, isTree := val.(*Tree)
+ _, isTreeS := val.([]*Tree)
+ if isTree || isTreeS {
+ e.line++
+ return val
+ }
+
+ ret := &tomlValue{
+ value: val,
+ position: Position{
+ e.line,
+ parent.position.Col,
+ },
+ }
+ e.line++
+ return ret
+}
+
+// Unmarshal attempts to unmarshal the Tree into a Go struct pointed by v.
+// Neither Unmarshaler interfaces nor UnmarshalTOML functions are supported for
+// sub-structs, and only definite types can be unmarshaled.
+func (t *Tree) Unmarshal(v interface{}) error {
+ d := Decoder{tval: t, tagName: tagFieldName}
+ return d.unmarshal(v)
+}
+
+// Marshal returns the TOML encoding of Tree.
+// See Marshal() documentation for types mapping table.
+func (t *Tree) Marshal() ([]byte, error) {
+ var buf bytes.Buffer
+ _, err := t.WriteTo(&buf)
+ if err != nil {
+ return nil, err
+ }
+ return buf.Bytes(), nil
+}
+
+// Unmarshal parses the TOML-encoded data and stores the result in the value
+// pointed to by v. Behavior is similar to the Go json encoder, except that there
+// is no concept of an Unmarshaler interface or UnmarshalTOML function for
+// sub-structs, and currently only definite types can be unmarshaled to (i.e. no
+// `interface{}`).
+//
+// The following struct annotations are supported:
+//
+// toml:"Field" Overrides the field's name to map to.
+// default:"foo" Provides a default value.
+//
+// For default values, only fields of the following types are supported:
+// * string
+// * bool
+// * int
+// * int64
+// * float64
+//
+// See Marshal() documentation for types mapping table.
+func Unmarshal(data []byte, v interface{}) error {
+ t, err := LoadReader(bytes.NewReader(data))
+ if err != nil {
+ return err
+ }
+ return t.Unmarshal(v)
+}
+
+// Decoder reads and decodes TOML values from an input stream.
+type Decoder struct {
+ r io.Reader
+ tval *Tree
+ encOpts
+ tagName string
+ strict bool
+ visitor visitorState
+}
+
+// NewDecoder returns a new decoder that reads from r.
+func NewDecoder(r io.Reader) *Decoder {
+ return &Decoder{
+ r: r,
+ encOpts: encOptsDefaults,
+ tagName: tagFieldName,
+ }
+}
+
+// Decode reads a TOML-encoded value from it's input
+// and unmarshals it in the value pointed at by v.
+//
+// See the documentation for Marshal for details.
+func (d *Decoder) Decode(v interface{}) error {
+ var err error
+ d.tval, err = LoadReader(d.r)
+ if err != nil {
+ return err
+ }
+ return d.unmarshal(v)
+}
+
+// SetTagName allows changing default tag "toml"
+func (d *Decoder) SetTagName(v string) *Decoder {
+ d.tagName = v
+ return d
+}
+
+// Strict allows changing to strict decoding. Any fields that are found in the
+// input data and do not have a corresponding struct member cause an error.
+func (d *Decoder) Strict(strict bool) *Decoder {
+ d.strict = strict
+ return d
+}
+
+func (d *Decoder) unmarshal(v interface{}) error {
+ mtype := reflect.TypeOf(v)
+ if mtype == nil {
+ return errors.New("nil cannot be unmarshaled from TOML")
+ }
+ if mtype.Kind() != reflect.Ptr {
+ return errors.New("only a pointer to struct or map can be unmarshaled from TOML")
+ }
+
+ elem := mtype.Elem()
+
+ switch elem.Kind() {
+ case reflect.Struct, reflect.Map:
+ case reflect.Interface:
+ elem = mapStringInterfaceType
+ default:
+ return errors.New("only a pointer to struct or map can be unmarshaled from TOML")
+ }
+
+ if reflect.ValueOf(v).IsNil() {
+ return errors.New("nil pointer cannot be unmarshaled from TOML")
+ }
+
+ vv := reflect.ValueOf(v).Elem()
+
+ if d.strict {
+ d.visitor = newVisitorState(d.tval)
+ }
+
+ sval, err := d.valueFromTree(elem, d.tval, &vv)
+ if err != nil {
+ return err
+ }
+ if err := d.visitor.validate(); err != nil {
+ return err
+ }
+ reflect.ValueOf(v).Elem().Set(sval)
+ return nil
+}
+
+// Convert toml tree to marshal struct or map, using marshal type. When mval1
+// is non-nil, merge fields into the given value instead of allocating a new one.
+func (d *Decoder) valueFromTree(mtype reflect.Type, tval *Tree, mval1 *reflect.Value) (reflect.Value, error) {
+ if mtype.Kind() == reflect.Ptr {
+ return d.unwrapPointer(mtype, tval, mval1)
+ }
+
+ // Check if pointer to value implements the Unmarshaler interface.
+ if mvalPtr := reflect.New(mtype); isCustomUnmarshaler(mvalPtr.Type()) {
+ d.visitor.visitAll()
+
+ if tval == nil {
+ return mvalPtr.Elem(), nil
+ }
+
+ if err := callCustomUnmarshaler(mvalPtr, tval.ToMap()); err != nil {
+ return reflect.ValueOf(nil), fmt.Errorf("unmarshal toml: %v", err)
+ }
+ return mvalPtr.Elem(), nil
+ }
+
+ var mval reflect.Value
+ switch mtype.Kind() {
+ case reflect.Struct:
+ if mval1 != nil {
+ mval = *mval1
+ } else {
+ mval = reflect.New(mtype).Elem()
+ }
+
+ switch mval.Interface().(type) {
+ case Tree:
+ mval.Set(reflect.ValueOf(tval).Elem())
+ default:
+ for i := 0; i < mtype.NumField(); i++ {
+ mtypef := mtype.Field(i)
+ an := annotation{tag: d.tagName}
+ opts := tomlOptions(mtypef, an)
+ if !opts.include {
+ continue
+ }
+ baseKey := opts.name
+ keysToTry := []string{
+ baseKey,
+ strings.ToLower(baseKey),
+ strings.ToTitle(baseKey),
+ strings.ToLower(string(baseKey[0])) + baseKey[1:],
+ }
+
+ found := false
+ if tval != nil {
+ for _, key := range keysToTry {
+ exists := tval.HasPath([]string{key})
+ if !exists {
+ continue
+ }
+
+ d.visitor.push(key)
+ val := tval.GetPath([]string{key})
+ fval := mval.Field(i)
+ mvalf, err := d.valueFromToml(mtypef.Type, val, &fval)
+ if err != nil {
+ return mval, formatError(err, tval.GetPositionPath([]string{key}))
+ }
+ mval.Field(i).Set(mvalf)
+ found = true
+ d.visitor.pop()
+ break
+ }
+ }
+
+ if !found && opts.defaultValue != "" {
+ mvalf := mval.Field(i)
+ var val interface{}
+ var err error
+ switch mvalf.Kind() {
+ case reflect.String:
+ val = opts.defaultValue
+ case reflect.Bool:
+ val, err = strconv.ParseBool(opts.defaultValue)
+ case reflect.Uint:
+ val, err = strconv.ParseUint(opts.defaultValue, 10, 0)
+ case reflect.Uint8:
+ val, err = strconv.ParseUint(opts.defaultValue, 10, 8)
+ case reflect.Uint16:
+ val, err = strconv.ParseUint(opts.defaultValue, 10, 16)
+ case reflect.Uint32:
+ val, err = strconv.ParseUint(opts.defaultValue, 10, 32)
+ case reflect.Uint64:
+ val, err = strconv.ParseUint(opts.defaultValue, 10, 64)
+ case reflect.Int:
+ val, err = strconv.ParseInt(opts.defaultValue, 10, 0)
+ case reflect.Int8:
+ val, err = strconv.ParseInt(opts.defaultValue, 10, 8)
+ case reflect.Int16:
+ val, err = strconv.ParseInt(opts.defaultValue, 10, 16)
+ case reflect.Int32:
+ val, err = strconv.ParseInt(opts.defaultValue, 10, 32)
+ case reflect.Int64:
+ // Check if the provided number has a non-numeric extension.
+ var hasExtension bool
+ if len(opts.defaultValue) > 0 {
+ lastChar := opts.defaultValue[len(opts.defaultValue)-1]
+ if lastChar < '0' || lastChar > '9' {
+ hasExtension = true
+ }
+ }
+ // If the value is a time.Duration with extension, parse as duration.
+ // If the value is an int64 or a time.Duration without extension, parse as number.
+ if hasExtension && mvalf.Type().String() == "time.Duration" {
+ val, err = time.ParseDuration(opts.defaultValue)
+ } else {
+ val, err = strconv.ParseInt(opts.defaultValue, 10, 64)
+ }
+ case reflect.Float32:
+ val, err = strconv.ParseFloat(opts.defaultValue, 32)
+ case reflect.Float64:
+ val, err = strconv.ParseFloat(opts.defaultValue, 64)
+ default:
+ return mvalf, fmt.Errorf("unsupported field type for default option")
+ }
+
+ if err != nil {
+ return mvalf, err
+ }
+ mvalf.Set(reflect.ValueOf(val).Convert(mvalf.Type()))
+ }
+
+ // save the old behavior above and try to check structs
+ if !found && opts.defaultValue == "" && mtypef.Type.Kind() == reflect.Struct {
+ tmpTval := tval
+ if !mtypef.Anonymous {
+ tmpTval = nil
+ }
+ fval := mval.Field(i)
+ v, err := d.valueFromTree(mtypef.Type, tmpTval, &fval)
+ if err != nil {
+ return v, err
+ }
+ mval.Field(i).Set(v)
+ }
+ }
+ }
+ case reflect.Map:
+ mval = reflect.MakeMap(mtype)
+ for _, key := range tval.Keys() {
+ d.visitor.push(key)
+ // TODO: path splits key
+ val := tval.GetPath([]string{key})
+ mvalf, err := d.valueFromToml(mtype.Elem(), val, nil)
+ if err != nil {
+ return mval, formatError(err, tval.GetPositionPath([]string{key}))
+ }
+ mval.SetMapIndex(reflect.ValueOf(key).Convert(mtype.Key()), mvalf)
+ d.visitor.pop()
+ }
+ }
+ return mval, nil
+}
+
+// Convert toml value to marshal struct/map slice, using marshal type
+func (d *Decoder) valueFromTreeSlice(mtype reflect.Type, tval []*Tree) (reflect.Value, error) {
+ mval, err := makeSliceOrArray(mtype, len(tval))
+ if err != nil {
+ return mval, err
+ }
+
+ for i := 0; i < len(tval); i++ {
+ d.visitor.push(strconv.Itoa(i))
+ val, err := d.valueFromTree(mtype.Elem(), tval[i], nil)
+ if err != nil {
+ return mval, err
+ }
+ mval.Index(i).Set(val)
+ d.visitor.pop()
+ }
+ return mval, nil
+}
+
+// Convert toml value to marshal primitive slice, using marshal type
+func (d *Decoder) valueFromOtherSlice(mtype reflect.Type, tval []interface{}) (reflect.Value, error) {
+ mval, err := makeSliceOrArray(mtype, len(tval))
+ if err != nil {
+ return mval, err
+ }
+
+ for i := 0; i < len(tval); i++ {
+ val, err := d.valueFromToml(mtype.Elem(), tval[i], nil)
+ if err != nil {
+ return mval, err
+ }
+ mval.Index(i).Set(val)
+ }
+ return mval, nil
+}
+
+// Convert toml value to marshal primitive slice, using marshal type
+func (d *Decoder) valueFromOtherSliceI(mtype reflect.Type, tval interface{}) (reflect.Value, error) {
+ val := reflect.ValueOf(tval)
+ length := val.Len()
+
+ mval, err := makeSliceOrArray(mtype, length)
+ if err != nil {
+ return mval, err
+ }
+
+ for i := 0; i < length; i++ {
+ val, err := d.valueFromToml(mtype.Elem(), val.Index(i).Interface(), nil)
+ if err != nil {
+ return mval, err
+ }
+ mval.Index(i).Set(val)
+ }
+ return mval, nil
+}
+
+// Create a new slice or a new array with specified length
+func makeSliceOrArray(mtype reflect.Type, tLength int) (reflect.Value, error) {
+ var mval reflect.Value
+ switch mtype.Kind() {
+ case reflect.Slice:
+ mval = reflect.MakeSlice(mtype, tLength, tLength)
+ case reflect.Array:
+ mval = reflect.New(reflect.ArrayOf(mtype.Len(), mtype.Elem())).Elem()
+ if tLength > mtype.Len() {
+ return mval, fmt.Errorf("unmarshal: TOML array length (%v) exceeds destination array length (%v)", tLength, mtype.Len())
+ }
+ }
+ return mval, nil
+}
+
+// Convert toml value to marshal value, using marshal type. When mval1 is non-nil
+// and the given type is a struct value, merge fields into it.
+func (d *Decoder) valueFromToml(mtype reflect.Type, tval interface{}, mval1 *reflect.Value) (reflect.Value, error) {
+ if mtype.Kind() == reflect.Ptr {
+ return d.unwrapPointer(mtype, tval, mval1)
+ }
+
+ switch t := tval.(type) {
+ case *Tree:
+ var mval11 *reflect.Value
+ if mtype.Kind() == reflect.Struct {
+ mval11 = mval1
+ }
+
+ if isTree(mtype) {
+ return d.valueFromTree(mtype, t, mval11)
+ }
+
+ if mtype.Kind() == reflect.Interface {
+ if mval1 == nil || mval1.IsNil() {
+ return d.valueFromTree(reflect.TypeOf(map[string]interface{}{}), t, nil)
+ } else {
+ return d.valueFromToml(mval1.Elem().Type(), t, nil)
+ }
+ }
+
+ return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to a tree", tval, tval)
+ case []*Tree:
+ if isTreeSequence(mtype) {
+ return d.valueFromTreeSlice(mtype, t)
+ }
+ if mtype.Kind() == reflect.Interface {
+ if mval1 == nil || mval1.IsNil() {
+ return d.valueFromTreeSlice(reflect.TypeOf([]map[string]interface{}{}), t)
+ } else {
+ ival := mval1.Elem()
+ return d.valueFromToml(mval1.Elem().Type(), t, &ival)
+ }
+ }
+ return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to trees", tval, tval)
+ case []interface{}:
+ d.visitor.visit()
+ if isOtherSequence(mtype) {
+ return d.valueFromOtherSlice(mtype, t)
+ }
+ if mtype.Kind() == reflect.Interface {
+ if mval1 == nil || mval1.IsNil() {
+ return d.valueFromOtherSlice(reflect.TypeOf([]interface{}{}), t)
+ } else {
+ ival := mval1.Elem()
+ return d.valueFromToml(mval1.Elem().Type(), t, &ival)
+ }
+ }
+ return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to a slice", tval, tval)
+ default:
+ d.visitor.visit()
+ mvalPtr := reflect.New(mtype)
+
+ // Check if pointer to value implements the Unmarshaler interface.
+ if isCustomUnmarshaler(mvalPtr.Type()) {
+ if err := callCustomUnmarshaler(mvalPtr, tval); err != nil {
+ return reflect.ValueOf(nil), fmt.Errorf("unmarshal toml: %v", err)
+ }
+ return mvalPtr.Elem(), nil
+ }
+
+ // Check if pointer to value implements the encoding.TextUnmarshaler.
+ if isTextUnmarshaler(mvalPtr.Type()) && !isTimeType(mtype) {
+ if err := d.unmarshalText(tval, mvalPtr); err != nil {
+ return reflect.ValueOf(nil), fmt.Errorf("unmarshal text: %v", err)
+ }
+ return mvalPtr.Elem(), nil
+ }
+
+ switch mtype.Kind() {
+ case reflect.Bool, reflect.Struct:
+ val := reflect.ValueOf(tval)
+
+ switch val.Type() {
+ case localDateType:
+ localDate := val.Interface().(LocalDate)
+ switch mtype {
+ case timeType:
+ return reflect.ValueOf(time.Date(localDate.Year, localDate.Month, localDate.Day, 0, 0, 0, 0, time.Local)), nil
+ }
+ case localDateTimeType:
+ localDateTime := val.Interface().(LocalDateTime)
+ switch mtype {
+ case timeType:
+ return reflect.ValueOf(time.Date(
+ localDateTime.Date.Year,
+ localDateTime.Date.Month,
+ localDateTime.Date.Day,
+ localDateTime.Time.Hour,
+ localDateTime.Time.Minute,
+ localDateTime.Time.Second,
+ localDateTime.Time.Nanosecond,
+ time.Local)), nil
+ }
+ }
+
+ // if this passes for when mtype is reflect.Struct, tval is a time.LocalTime
+ if !val.Type().ConvertibleTo(mtype) {
+ return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v", tval, tval, mtype.String())
+ }
+
+ return val.Convert(mtype), nil
+ case reflect.String:
+ val := reflect.ValueOf(tval)
+ // stupidly, int64 is convertible to string. So special case this.
+ if !val.Type().ConvertibleTo(mtype) || val.Kind() == reflect.Int64 {
+ return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v", tval, tval, mtype.String())
+ }
+
+ return val.Convert(mtype), nil
+ case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+ val := reflect.ValueOf(tval)
+ if mtype.Kind() == reflect.Int64 && mtype == reflect.TypeOf(time.Duration(1)) && val.Kind() == reflect.String {
+ d, err := time.ParseDuration(val.String())
+ if err != nil {
+ return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v. %s", tval, tval, mtype.String(), err)
+ }
+ return reflect.ValueOf(d), nil
+ }
+ if !val.Type().ConvertibleTo(mtype) || val.Kind() == reflect.Float64 {
+ return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v", tval, tval, mtype.String())
+ }
+ if reflect.Indirect(reflect.New(mtype)).OverflowInt(val.Convert(reflect.TypeOf(int64(0))).Int()) {
+ return reflect.ValueOf(nil), fmt.Errorf("%v(%T) would overflow %v", tval, tval, mtype.String())
+ }
+
+ return val.Convert(mtype), nil
+ case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+ val := reflect.ValueOf(tval)
+ if !val.Type().ConvertibleTo(mtype) || val.Kind() == reflect.Float64 {
+ return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v", tval, tval, mtype.String())
+ }
+
+ if val.Convert(reflect.TypeOf(int(1))).Int() < 0 {
+ return reflect.ValueOf(nil), fmt.Errorf("%v(%T) is negative so does not fit in %v", tval, tval, mtype.String())
+ }
+ if reflect.Indirect(reflect.New(mtype)).OverflowUint(val.Convert(reflect.TypeOf(uint64(0))).Uint()) {
+ return reflect.ValueOf(nil), fmt.Errorf("%v(%T) would overflow %v", tval, tval, mtype.String())
+ }
+
+ return val.Convert(mtype), nil
+ case reflect.Float32, reflect.Float64:
+ val := reflect.ValueOf(tval)
+ if !val.Type().ConvertibleTo(mtype) || val.Kind() == reflect.Int64 {
+ return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v", tval, tval, mtype.String())
+ }
+ if reflect.Indirect(reflect.New(mtype)).OverflowFloat(val.Convert(reflect.TypeOf(float64(0))).Float()) {
+ return reflect.ValueOf(nil), fmt.Errorf("%v(%T) would overflow %v", tval, tval, mtype.String())
+ }
+
+ return val.Convert(mtype), nil
+ case reflect.Interface:
+ if mval1 == nil || mval1.IsNil() {
+ return reflect.ValueOf(tval), nil
+ } else {
+ ival := mval1.Elem()
+ return d.valueFromToml(mval1.Elem().Type(), t, &ival)
+ }
+ case reflect.Slice, reflect.Array:
+ if isOtherSequence(mtype) && isOtherSequence(reflect.TypeOf(t)) {
+ return d.valueFromOtherSliceI(mtype, t)
+ }
+ return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v(%v)", tval, tval, mtype, mtype.Kind())
+ default:
+ return reflect.ValueOf(nil), fmt.Errorf("Can't convert %v(%T) to %v(%v)", tval, tval, mtype, mtype.Kind())
+ }
+ }
+}
+
+func (d *Decoder) unwrapPointer(mtype reflect.Type, tval interface{}, mval1 *reflect.Value) (reflect.Value, error) {
+ var melem *reflect.Value
+
+ if mval1 != nil && !mval1.IsNil() && (mtype.Elem().Kind() == reflect.Struct || mtype.Elem().Kind() == reflect.Interface) {
+ elem := mval1.Elem()
+ melem = &elem
+ }
+
+ val, err := d.valueFromToml(mtype.Elem(), tval, melem)
+ if err != nil {
+ return reflect.ValueOf(nil), err
+ }
+ mval := reflect.New(mtype.Elem())
+ mval.Elem().Set(val)
+ return mval, nil
+}
+
+func (d *Decoder) unmarshalText(tval interface{}, mval reflect.Value) error {
+ var buf bytes.Buffer
+ fmt.Fprint(&buf, tval)
+ return callTextUnmarshaler(mval, buf.Bytes())
+}
+
+func tomlOptions(vf reflect.StructField, an annotation) tomlOpts {
+ tag := vf.Tag.Get(an.tag)
+ parse := strings.Split(tag, ",")
+ var comment string
+ if c := vf.Tag.Get(an.comment); c != "" {
+ comment = c
+ }
+ commented, _ := strconv.ParseBool(vf.Tag.Get(an.commented))
+ multiline, _ := strconv.ParseBool(vf.Tag.Get(an.multiline))
+ literal, _ := strconv.ParseBool(vf.Tag.Get(an.literal))
+ defaultValue := vf.Tag.Get(tagDefault)
+ result := tomlOpts{
+ name: vf.Name,
+ nameFromTag: false,
+ comment: comment,
+ commented: commented,
+ multiline: multiline,
+ literal: literal,
+ include: true,
+ omitempty: false,
+ defaultValue: defaultValue,
+ }
+ if parse[0] != "" {
+ if parse[0] == "-" && len(parse) == 1 {
+ result.include = false
+ } else {
+ result.name = strings.Trim(parse[0], " ")
+ result.nameFromTag = true
+ }
+ }
+ if vf.PkgPath != "" {
+ result.include = false
+ }
+ if len(parse) > 1 && strings.Trim(parse[1], " ") == "omitempty" {
+ result.omitempty = true
+ }
+ if vf.Type.Kind() == reflect.Ptr {
+ result.omitempty = true
+ }
+ return result
+}
+
+func isZero(val reflect.Value) bool {
+ switch val.Type().Kind() {
+ case reflect.Slice, reflect.Array, reflect.Map:
+ return val.Len() == 0
+ default:
+ return reflect.DeepEqual(val.Interface(), reflect.Zero(val.Type()).Interface())
+ }
+}
+
+func formatError(err error, pos Position) error {
+ if err.Error()[0] == '(' { // Error already contains position information
+ return err
+ }
+ return fmt.Errorf("%s: %s", pos, err)
+}
+
+// visitorState keeps track of which keys were unmarshaled.
+type visitorState struct {
+ tree *Tree
+ path []string
+ keys map[string]struct{}
+ active bool
+}
+
+func newVisitorState(tree *Tree) visitorState {
+ path, result := []string{}, map[string]struct{}{}
+ insertKeys(path, result, tree)
+ return visitorState{
+ tree: tree,
+ path: path[:0],
+ keys: result,
+ active: true,
+ }
+}
+
+func (s *visitorState) push(key string) {
+ if s.active {
+ s.path = append(s.path, key)
+ }
+}
+
+func (s *visitorState) pop() {
+ if s.active {
+ s.path = s.path[:len(s.path)-1]
+ }
+}
+
+func (s *visitorState) visit() {
+ if s.active {
+ delete(s.keys, strings.Join(s.path, "."))
+ }
+}
+
+func (s *visitorState) visitAll() {
+ if s.active {
+ for k := range s.keys {
+ if strings.HasPrefix(k, strings.Join(s.path, ".")) {
+ delete(s.keys, k)
+ }
+ }
+ }
+}
+
+func (s *visitorState) validate() error {
+ if !s.active {
+ return nil
+ }
+ undecoded := make([]string, 0, len(s.keys))
+ for key := range s.keys {
+ undecoded = append(undecoded, key)
+ }
+ sort.Strings(undecoded)
+ if len(undecoded) > 0 {
+ return fmt.Errorf("undecoded keys: %q", undecoded)
+ }
+ return nil
+}
+
+func insertKeys(path []string, m map[string]struct{}, tree *Tree) {
+ for k, v := range tree.values {
+ switch node := v.(type) {
+ case []*Tree:
+ for i, item := range node {
+ insertKeys(append(path, k, strconv.Itoa(i)), m, item)
+ }
+ case *Tree:
+ insertKeys(append(path, k), m, node)
+ case *tomlValue:
+ m[strings.Join(append(path, k), ".")] = struct{}{}
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.46.0) at 2025-07-13 00:50:05 +0000