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-rw-r--r--vendor/golang.org/x/net/webdav/internal/xml/README11
-rw-r--r--vendor/golang.org/x/net/webdav/internal/xml/marshal.go1223
-rw-r--r--vendor/golang.org/x/net/webdav/internal/xml/read.go692
-rw-r--r--vendor/golang.org/x/net/webdav/internal/xml/typeinfo.go371
-rw-r--r--vendor/golang.org/x/net/webdav/internal/xml/xml.go1998
5 files changed, 0 insertions, 4295 deletions
diff --git a/vendor/golang.org/x/net/webdav/internal/xml/README b/vendor/golang.org/x/net/webdav/internal/xml/README
deleted file mode 100644
index 89656f4..0000000
--- a/vendor/golang.org/x/net/webdav/internal/xml/README
+++ /dev/null
@@ -1,11 +0,0 @@
-This is a fork of the encoding/xml package at ca1d6c4, the last commit before
-https://go.googlesource.com/go/+/c0d6d33 "encoding/xml: restore Go 1.4 name
-space behavior" made late in the lead-up to the Go 1.5 release.
-
-The list of encoding/xml changes is at
-https://go.googlesource.com/go/+log/master/src/encoding/xml
-
-This fork is temporary, and I (nigeltao) expect to revert it after Go 1.6 is
-released.
-
-See http://golang.org/issue/11841
diff --git a/vendor/golang.org/x/net/webdav/internal/xml/marshal.go b/vendor/golang.org/x/net/webdav/internal/xml/marshal.go
deleted file mode 100644
index cb82ec2..0000000
--- a/vendor/golang.org/x/net/webdav/internal/xml/marshal.go
+++ /dev/null
@@ -1,1223 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package xml
-
-import (
- "bufio"
- "bytes"
- "encoding"
- "fmt"
- "io"
- "reflect"
- "strconv"
- "strings"
-)
-
-const (
- // A generic XML header suitable for use with the output of Marshal.
- // This is not automatically added to any output of this package,
- // it is provided as a convenience.
- Header = `<?xml version="1.0" encoding="UTF-8"?>` + "\n"
-)
-
-// Marshal returns the XML encoding of v.
-//
-// Marshal handles an array or slice by marshalling each of the elements.
-// Marshal handles a pointer by marshalling the value it points at or, if the
-// pointer is nil, by writing nothing. Marshal handles an interface value by
-// marshalling the value it contains or, if the interface value is nil, by
-// writing nothing. Marshal handles all other data by writing one or more XML
-// elements containing the data.
-//
-// The name for the XML elements is taken from, in order of preference:
-// - the tag on the XMLName field, if the data is a struct
-// - the value of the XMLName field of type xml.Name
-// - the tag of the struct field used to obtain the data
-// - the name of the struct field used to obtain the data
-// - the name of the marshalled type
-//
-// The XML element for a struct contains marshalled elements for each of the
-// exported fields of the struct, with these exceptions:
-// - the XMLName field, described above, is omitted.
-// - a field with tag "-" is omitted.
-// - a field with tag "name,attr" becomes an attribute with
-// the given name in the XML element.
-// - a field with tag ",attr" becomes an attribute with the
-// field name in the XML element.
-// - a field with tag ",chardata" is written as character data,
-// not as an XML element.
-// - a field with tag ",innerxml" is written verbatim, not subject
-// to the usual marshalling procedure.
-// - a field with tag ",comment" is written as an XML comment, not
-// subject to the usual marshalling procedure. It must not contain
-// the "--" string within it.
-// - a field with a tag including the "omitempty" option is omitted
-// if the field value is empty. The empty values are false, 0, any
-// nil pointer or interface value, and any array, slice, map, or
-// string of length zero.
-// - an anonymous struct field is handled as if the fields of its
-// value were part of the outer struct.
-//
-// If a field uses a tag "a>b>c", then the element c will be nested inside
-// parent elements a and b. Fields that appear next to each other that name
-// the same parent will be enclosed in one XML element.
-//
-// See MarshalIndent for an example.
-//
-// Marshal will return an error if asked to marshal a channel, function, or map.
-func Marshal(v interface{}) ([]byte, error) {
- var b bytes.Buffer
- if err := NewEncoder(&b).Encode(v); err != nil {
- return nil, err
- }
- return b.Bytes(), nil
-}
-
-// Marshaler is the interface implemented by objects that can marshal
-// themselves into valid XML elements.
-//
-// MarshalXML encodes the receiver as zero or more XML elements.
-// By convention, arrays or slices are typically encoded as a sequence
-// of elements, one per entry.
-// Using start as the element tag is not required, but doing so
-// will enable Unmarshal to match the XML elements to the correct
-// struct field.
-// One common implementation strategy is to construct a separate
-// value with a layout corresponding to the desired XML and then
-// to encode it using e.EncodeElement.
-// Another common strategy is to use repeated calls to e.EncodeToken
-// to generate the XML output one token at a time.
-// The sequence of encoded tokens must make up zero or more valid
-// XML elements.
-type Marshaler interface {
- MarshalXML(e *Encoder, start StartElement) error
-}
-
-// MarshalerAttr is the interface implemented by objects that can marshal
-// themselves into valid XML attributes.
-//
-// MarshalXMLAttr returns an XML attribute with the encoded value of the receiver.
-// Using name as the attribute name is not required, but doing so
-// will enable Unmarshal to match the attribute to the correct
-// struct field.
-// If MarshalXMLAttr returns the zero attribute Attr{}, no attribute
-// will be generated in the output.
-// MarshalXMLAttr is used only for struct fields with the
-// "attr" option in the field tag.
-type MarshalerAttr interface {
- MarshalXMLAttr(name Name) (Attr, error)
-}
-
-// MarshalIndent works like Marshal, but each XML element begins on a new
-// indented line that starts with prefix and is followed by one or more
-// copies of indent according to the nesting depth.
-func MarshalIndent(v interface{}, prefix, indent string) ([]byte, error) {
- var b bytes.Buffer
- enc := NewEncoder(&b)
- enc.Indent(prefix, indent)
- if err := enc.Encode(v); err != nil {
- return nil, err
- }
- return b.Bytes(), nil
-}
-
-// An Encoder writes XML data to an output stream.
-type Encoder struct {
- p printer
-}
-
-// NewEncoder returns a new encoder that writes to w.
-func NewEncoder(w io.Writer) *Encoder {
- e := &Encoder{printer{Writer: bufio.NewWriter(w)}}
- e.p.encoder = e
- return e
-}
-
-// Indent sets the encoder to generate XML in which each element
-// begins on a new indented line that starts with prefix and is followed by
-// one or more copies of indent according to the nesting depth.
-func (enc *Encoder) Indent(prefix, indent string) {
- enc.p.prefix = prefix
- enc.p.indent = indent
-}
-
-// Encode writes the XML encoding of v to the stream.
-//
-// See the documentation for Marshal for details about the conversion
-// of Go values to XML.
-//
-// Encode calls Flush before returning.
-func (enc *Encoder) Encode(v interface{}) error {
- err := enc.p.marshalValue(reflect.ValueOf(v), nil, nil)
- if err != nil {
- return err
- }
- return enc.p.Flush()
-}
-
-// EncodeElement writes the XML encoding of v to the stream,
-// using start as the outermost tag in the encoding.
-//
-// See the documentation for Marshal for details about the conversion
-// of Go values to XML.
-//
-// EncodeElement calls Flush before returning.
-func (enc *Encoder) EncodeElement(v interface{}, start StartElement) error {
- err := enc.p.marshalValue(reflect.ValueOf(v), nil, &start)
- if err != nil {
- return err
- }
- return enc.p.Flush()
-}
-
-var (
- begComment = []byte("<!--")
- endComment = []byte("-->")
- endProcInst = []byte("?>")
- endDirective = []byte(">")
-)
-
-// EncodeToken writes the given XML token to the stream.
-// It returns an error if StartElement and EndElement tokens are not
-// properly matched.
-//
-// EncodeToken does not call Flush, because usually it is part of a
-// larger operation such as Encode or EncodeElement (or a custom
-// Marshaler's MarshalXML invoked during those), and those will call
-// Flush when finished. Callers that create an Encoder and then invoke
-// EncodeToken directly, without using Encode or EncodeElement, need to
-// call Flush when finished to ensure that the XML is written to the
-// underlying writer.
-//
-// EncodeToken allows writing a ProcInst with Target set to "xml" only
-// as the first token in the stream.
-//
-// When encoding a StartElement holding an XML namespace prefix
-// declaration for a prefix that is not already declared, contained
-// elements (including the StartElement itself) will use the declared
-// prefix when encoding names with matching namespace URIs.
-func (enc *Encoder) EncodeToken(t Token) error {
-
- p := &enc.p
- switch t := t.(type) {
- case StartElement:
- if err := p.writeStart(&t); err != nil {
- return err
- }
- case EndElement:
- if err := p.writeEnd(t.Name); err != nil {
- return err
- }
- case CharData:
- escapeText(p, t, false)
- case Comment:
- if bytes.Contains(t, endComment) {
- return fmt.Errorf("xml: EncodeToken of Comment containing --> marker")
- }
- p.WriteString("<!--")
- p.Write(t)
- p.WriteString("-->")
- return p.cachedWriteError()
- case ProcInst:
- // First token to be encoded which is also a ProcInst with target of xml
- // is the xml declaration. The only ProcInst where target of xml is allowed.
- if t.Target == "xml" && p.Buffered() != 0 {
- return fmt.Errorf("xml: EncodeToken of ProcInst xml target only valid for xml declaration, first token encoded")
- }
- if !isNameString(t.Target) {
- return fmt.Errorf("xml: EncodeToken of ProcInst with invalid Target")
- }
- if bytes.Contains(t.Inst, endProcInst) {
- return fmt.Errorf("xml: EncodeToken of ProcInst containing ?> marker")
- }
- p.WriteString("<?")
- p.WriteString(t.Target)
- if len(t.Inst) > 0 {
- p.WriteByte(' ')
- p.Write(t.Inst)
- }
- p.WriteString("?>")
- case Directive:
- if !isValidDirective(t) {
- return fmt.Errorf("xml: EncodeToken of Directive containing wrong < or > markers")
- }
- p.WriteString("<!")
- p.Write(t)
- p.WriteString(">")
- default:
- return fmt.Errorf("xml: EncodeToken of invalid token type")
-
- }
- return p.cachedWriteError()
-}
-
-// isValidDirective reports whether dir is a valid directive text,
-// meaning angle brackets are matched, ignoring comments and strings.
-func isValidDirective(dir Directive) bool {
- var (
- depth int
- inquote uint8
- incomment bool
- )
- for i, c := range dir {
- switch {
- case incomment:
- if c == '>' {
- if n := 1 + i - len(endComment); n >= 0 && bytes.Equal(dir[n:i+1], endComment) {
- incomment = false
- }
- }
- // Just ignore anything in comment
- case inquote != 0:
- if c == inquote {
- inquote = 0
- }
- // Just ignore anything within quotes
- case c == '\'' || c == '"':
- inquote = c
- case c == '<':
- if i+len(begComment) < len(dir) && bytes.Equal(dir[i:i+len(begComment)], begComment) {
- incomment = true
- } else {
- depth++
- }
- case c == '>':
- if depth == 0 {
- return false
- }
- depth--
- }
- }
- return depth == 0 && inquote == 0 && !incomment
-}
-
-// Flush flushes any buffered XML to the underlying writer.
-// See the EncodeToken documentation for details about when it is necessary.
-func (enc *Encoder) Flush() error {
- return enc.p.Flush()
-}
-
-type printer struct {
- *bufio.Writer
- encoder *Encoder
- seq int
- indent string
- prefix string
- depth int
- indentedIn bool
- putNewline bool
- defaultNS string
- attrNS map[string]string // map prefix -> name space
- attrPrefix map[string]string // map name space -> prefix
- prefixes []printerPrefix
- tags []Name
-}
-
-// printerPrefix holds a namespace undo record.
-// When an element is popped, the prefix record
-// is set back to the recorded URL. The empty
-// prefix records the URL for the default name space.
-//
-// The start of an element is recorded with an element
-// that has mark=true.
-type printerPrefix struct {
- prefix string
- url string
- mark bool
-}
-
-func (p *printer) prefixForNS(url string, isAttr bool) string {
- // The "http://www.w3.org/XML/1998/namespace" name space is predefined as "xml"
- // and must be referred to that way.
- // (The "http://www.w3.org/2000/xmlns/" name space is also predefined as "xmlns",
- // but users should not be trying to use that one directly - that's our job.)
- if url == xmlURL {
- return "xml"
- }
- if !isAttr && url == p.defaultNS {
- // We can use the default name space.
- return ""
- }
- return p.attrPrefix[url]
-}
-
-// defineNS pushes any namespace definition found in the given attribute.
-// If ignoreNonEmptyDefault is true, an xmlns="nonempty"
-// attribute will be ignored.
-func (p *printer) defineNS(attr Attr, ignoreNonEmptyDefault bool) error {
- var prefix string
- if attr.Name.Local == "xmlns" {
- if attr.Name.Space != "" && attr.Name.Space != "xml" && attr.Name.Space != xmlURL {
- return fmt.Errorf("xml: cannot redefine xmlns attribute prefix")
- }
- } else if attr.Name.Space == "xmlns" && attr.Name.Local != "" {
- prefix = attr.Name.Local
- if attr.Value == "" {
- // Technically, an empty XML namespace is allowed for an attribute.
- // From http://www.w3.org/TR/xml-names11/#scoping-defaulting:
- //
- // The attribute value in a namespace declaration for a prefix may be
- // empty. This has the effect, within the scope of the declaration, of removing
- // any association of the prefix with a namespace name.
- //
- // However our namespace prefixes here are used only as hints. There's
- // no need to respect the removal of a namespace prefix, so we ignore it.
- return nil
- }
- } else {
- // Ignore: it's not a namespace definition
- return nil
- }
- if prefix == "" {
- if attr.Value == p.defaultNS {
- // No need for redefinition.
- return nil
- }
- if attr.Value != "" && ignoreNonEmptyDefault {
- // We have an xmlns="..." value but
- // it can't define a name space in this context,
- // probably because the element has an empty
- // name space. In this case, we just ignore
- // the name space declaration.
- return nil
- }
- } else if _, ok := p.attrPrefix[attr.Value]; ok {
- // There's already a prefix for the given name space,
- // so use that. This prevents us from
- // having two prefixes for the same name space
- // so attrNS and attrPrefix can remain bijective.
- return nil
- }
- p.pushPrefix(prefix, attr.Value)
- return nil
-}
-
-// createNSPrefix creates a name space prefix attribute
-// to use for the given name space, defining a new prefix
-// if necessary.
-// If isAttr is true, the prefix is to be created for an attribute
-// prefix, which means that the default name space cannot
-// be used.
-func (p *printer) createNSPrefix(url string, isAttr bool) {
- if _, ok := p.attrPrefix[url]; ok {
- // We already have a prefix for the given URL.
- return
- }
- switch {
- case !isAttr && url == p.defaultNS:
- // We can use the default name space.
- return
- case url == "":
- // The only way we can encode names in the empty
- // name space is by using the default name space,
- // so we must use that.
- if p.defaultNS != "" {
- // The default namespace is non-empty, so we
- // need to set it to empty.
- p.pushPrefix("", "")
- }
- return
- case url == xmlURL:
- return
- }
- // TODO If the URL is an existing prefix, we could
- // use it as is. That would enable the
- // marshaling of elements that had been unmarshaled
- // and with a name space prefix that was not found.
- // although technically it would be incorrect.
-
- // Pick a name. We try to use the final element of the path
- // but fall back to _.
- prefix := strings.TrimRight(url, "/")
- if i := strings.LastIndex(prefix, "/"); i >= 0 {
- prefix = prefix[i+1:]
- }
- if prefix == "" || !isName([]byte(prefix)) || strings.Contains(prefix, ":") {
- prefix = "_"
- }
- if strings.HasPrefix(prefix, "xml") {
- // xmlanything is reserved.
- prefix = "_" + prefix
- }
- if p.attrNS[prefix] != "" {
- // Name is taken. Find a better one.
- for p.seq++; ; p.seq++ {
- if id := prefix + "_" + strconv.Itoa(p.seq); p.attrNS[id] == "" {
- prefix = id
- break
- }
- }
- }
-
- p.pushPrefix(prefix, url)
-}
-
-// writeNamespaces writes xmlns attributes for all the
-// namespace prefixes that have been defined in
-// the current element.
-func (p *printer) writeNamespaces() {
- for i := len(p.prefixes) - 1; i >= 0; i-- {
- prefix := p.prefixes[i]
- if prefix.mark {
- return
- }
- p.WriteString(" ")
- if prefix.prefix == "" {
- // Default name space.
- p.WriteString(`xmlns="`)
- } else {
- p.WriteString("xmlns:")
- p.WriteString(prefix.prefix)
- p.WriteString(`="`)
- }
- EscapeText(p, []byte(p.nsForPrefix(prefix.prefix)))
- p.WriteString(`"`)
- }
-}
-
-// pushPrefix pushes a new prefix on the prefix stack
-// without checking to see if it is already defined.
-func (p *printer) pushPrefix(prefix, url string) {
- p.prefixes = append(p.prefixes, printerPrefix{
- prefix: prefix,
- url: p.nsForPrefix(prefix),
- })
- p.setAttrPrefix(prefix, url)
-}
-
-// nsForPrefix returns the name space for the given
-// prefix. Note that this is not valid for the
-// empty attribute prefix, which always has an empty
-// name space.
-func (p *printer) nsForPrefix(prefix string) string {
- if prefix == "" {
- return p.defaultNS
- }
- return p.attrNS[prefix]
-}
-
-// markPrefix marks the start of an element on the prefix
-// stack.
-func (p *printer) markPrefix() {
- p.prefixes = append(p.prefixes, printerPrefix{
- mark: true,
- })
-}
-
-// popPrefix pops all defined prefixes for the current
-// element.
-func (p *printer) popPrefix() {
- for len(p.prefixes) > 0 {
- prefix := p.prefixes[len(p.prefixes)-1]
- p.prefixes = p.prefixes[:len(p.prefixes)-1]
- if prefix.mark {
- break
- }
- p.setAttrPrefix(prefix.prefix, prefix.url)
- }
-}
-
-// setAttrPrefix sets an attribute name space prefix.
-// If url is empty, the attribute is removed.
-// If prefix is empty, the default name space is set.
-func (p *printer) setAttrPrefix(prefix, url string) {
- if prefix == "" {
- p.defaultNS = url
- return
- }
- if url == "" {
- delete(p.attrPrefix, p.attrNS[prefix])
- delete(p.attrNS, prefix)
- return
- }
- if p.attrPrefix == nil {
- // Need to define a new name space.
- p.attrPrefix = make(map[string]string)
- p.attrNS = make(map[string]string)
- }
- // Remove any old prefix value. This is OK because we maintain a
- // strict one-to-one mapping between prefix and URL (see
- // defineNS)
- delete(p.attrPrefix, p.attrNS[prefix])
- p.attrPrefix[url] = prefix
- p.attrNS[prefix] = url
-}
-
-var (
- marshalerType = reflect.TypeOf((*Marshaler)(nil)).Elem()
- marshalerAttrType = reflect.TypeOf((*MarshalerAttr)(nil)).Elem()
- textMarshalerType = reflect.TypeOf((*encoding.TextMarshaler)(nil)).Elem()
-)
-
-// marshalValue writes one or more XML elements representing val.
-// If val was obtained from a struct field, finfo must have its details.
-func (p *printer) marshalValue(val reflect.Value, finfo *fieldInfo, startTemplate *StartElement) error {
- if startTemplate != nil && startTemplate.Name.Local == "" {
- return fmt.Errorf("xml: EncodeElement of StartElement with missing name")
- }
-
- if !val.IsValid() {
- return nil
- }
- if finfo != nil && finfo.flags&fOmitEmpty != 0 && isEmptyValue(val) {
- return nil
- }
-
- // Drill into interfaces and pointers.
- // This can turn into an infinite loop given a cyclic chain,
- // but it matches the Go 1 behavior.
- for val.Kind() == reflect.Interface || val.Kind() == reflect.Ptr {
- if val.IsNil() {
- return nil
- }
- val = val.Elem()
- }
-
- kind := val.Kind()
- typ := val.Type()
-
- // Check for marshaler.
- if val.CanInterface() && typ.Implements(marshalerType) {
- return p.marshalInterface(val.Interface().(Marshaler), p.defaultStart(typ, finfo, startTemplate))
- }
- if val.CanAddr() {
- pv := val.Addr()
- if pv.CanInterface() && pv.Type().Implements(marshalerType) {
- return p.marshalInterface(pv.Interface().(Marshaler), p.defaultStart(pv.Type(), finfo, startTemplate))
- }
- }
-
- // Check for text marshaler.
- if val.CanInterface() && typ.Implements(textMarshalerType) {
- return p.marshalTextInterface(val.Interface().(encoding.TextMarshaler), p.defaultStart(typ, finfo, startTemplate))
- }
- if val.CanAddr() {
- pv := val.Addr()
- if pv.CanInterface() && pv.Type().Implements(textMarshalerType) {
- return p.marshalTextInterface(pv.Interface().(encoding.TextMarshaler), p.defaultStart(pv.Type(), finfo, startTemplate))
- }
- }
-
- // Slices and arrays iterate over the elements. They do not have an enclosing tag.
- if (kind == reflect.Slice || kind == reflect.Array) && typ.Elem().Kind() != reflect.Uint8 {
- for i, n := 0, val.Len(); i < n; i++ {
- if err := p.marshalValue(val.Index(i), finfo, startTemplate); err != nil {
- return err
- }
- }
- return nil
- }
-
- tinfo, err := getTypeInfo(typ)
- if err != nil {
- return err
- }
-
- // Create start element.
- // Precedence for the XML element name is:
- // 0. startTemplate
- // 1. XMLName field in underlying struct;
- // 2. field name/tag in the struct field; and
- // 3. type name
- var start StartElement
-
- // explicitNS records whether the element's name space has been
- // explicitly set (for example an XMLName field).
- explicitNS := false
-
- if startTemplate != nil {
- start.Name = startTemplate.Name
- explicitNS = true
- start.Attr = append(start.Attr, startTemplate.Attr...)
- } else if tinfo.xmlname != nil {
- xmlname := tinfo.xmlname
- if xmlname.name != "" {
- start.Name.Space, start.Name.Local = xmlname.xmlns, xmlname.name
- } else if v, ok := xmlname.value(val).Interface().(Name); ok && v.Local != "" {
- start.Name = v
- }
- explicitNS = true
- }
- if start.Name.Local == "" && finfo != nil {
- start.Name.Local = finfo.name
- if finfo.xmlns != "" {
- start.Name.Space = finfo.xmlns
- explicitNS = true
- }
- }
- if start.Name.Local == "" {
- name := typ.Name()
- if name == "" {
- return &UnsupportedTypeError{typ}
- }
- start.Name.Local = name
- }
-
- // defaultNS records the default name space as set by a xmlns="..."
- // attribute. We don't set p.defaultNS because we want to let
- // the attribute writing code (in p.defineNS) be solely responsible
- // for maintaining that.
- defaultNS := p.defaultNS
-
- // Attributes
- for i := range tinfo.fields {
- finfo := &tinfo.fields[i]
- if finfo.flags&fAttr == 0 {
- continue
- }
- attr, err := p.fieldAttr(finfo, val)
- if err != nil {
- return err
- }
- if attr.Name.Local == "" {
- continue
- }
- start.Attr = append(start.Attr, attr)
- if attr.Name.Space == "" && attr.Name.Local == "xmlns" {
- defaultNS = attr.Value
- }
- }
- if !explicitNS {
- // Historic behavior: elements use the default name space
- // they are contained in by default.
- start.Name.Space = defaultNS
- }
- // Historic behaviour: an element that's in a namespace sets
- // the default namespace for all elements contained within it.
- start.setDefaultNamespace()
-
- if err := p.writeStart(&start); err != nil {
- return err
- }
-
- if val.Kind() == reflect.Struct {
- err = p.marshalStruct(tinfo, val)
- } else {
- s, b, err1 := p.marshalSimple(typ, val)
- if err1 != nil {
- err = err1
- } else if b != nil {
- EscapeText(p, b)
- } else {
- p.EscapeString(s)
- }
- }
- if err != nil {
- return err
- }
-
- if err := p.writeEnd(start.Name); err != nil {
- return err
- }
-
- return p.cachedWriteError()
-}
-
-// fieldAttr returns the attribute of the given field.
-// If the returned attribute has an empty Name.Local,
-// it should not be used.
-// The given value holds the value containing the field.
-func (p *printer) fieldAttr(finfo *fieldInfo, val reflect.Value) (Attr, error) {
- fv := finfo.value(val)
- name := Name{Space: finfo.xmlns, Local: finfo.name}
- if finfo.flags&fOmitEmpty != 0 && isEmptyValue(fv) {
- return Attr{}, nil
- }
- if fv.Kind() == reflect.Interface && fv.IsNil() {
- return Attr{}, nil
- }
- if fv.CanInterface() && fv.Type().Implements(marshalerAttrType) {
- attr, err := fv.Interface().(MarshalerAttr).MarshalXMLAttr(name)
- return attr, err
- }
- if fv.CanAddr() {
- pv := fv.Addr()
- if pv.CanInterface() && pv.Type().Implements(marshalerAttrType) {
- attr, err := pv.Interface().(MarshalerAttr).MarshalXMLAttr(name)
- return attr, err
- }
- }
- if fv.CanInterface() && fv.Type().Implements(textMarshalerType) {
- text, err := fv.Interface().(encoding.TextMarshaler).MarshalText()
- if err != nil {
- return Attr{}, err
- }
- return Attr{name, string(text)}, nil
- }
- if fv.CanAddr() {
- pv := fv.Addr()
- if pv.CanInterface() && pv.Type().Implements(textMarshalerType) {
- text, err := pv.Interface().(encoding.TextMarshaler).MarshalText()
- if err != nil {
- return Attr{}, err
- }
- return Attr{name, string(text)}, nil
- }
- }
- // Dereference or skip nil pointer, interface values.
- switch fv.Kind() {
- case reflect.Ptr, reflect.Interface:
- if fv.IsNil() {
- return Attr{}, nil
- }
- fv = fv.Elem()
- }
- s, b, err := p.marshalSimple(fv.Type(), fv)
- if err != nil {
- return Attr{}, err
- }
- if b != nil {
- s = string(b)
- }
- return Attr{name, s}, nil
-}
-
-// defaultStart returns the default start element to use,
-// given the reflect type, field info, and start template.
-func (p *printer) defaultStart(typ reflect.Type, finfo *fieldInfo, startTemplate *StartElement) StartElement {
- var start StartElement
- // Precedence for the XML element name is as above,
- // except that we do not look inside structs for the first field.
- if startTemplate != nil {
- start.Name = startTemplate.Name
- start.Attr = append(start.Attr, startTemplate.Attr...)
- } else if finfo != nil && finfo.name != "" {
- start.Name.Local = finfo.name
- start.Name.Space = finfo.xmlns
- } else if typ.Name() != "" {
- start.Name.Local = typ.Name()
- } else {
- // Must be a pointer to a named type,
- // since it has the Marshaler methods.
- start.Name.Local = typ.Elem().Name()
- }
- // Historic behaviour: elements use the name space of
- // the element they are contained in by default.
- if start.Name.Space == "" {
- start.Name.Space = p.defaultNS
- }
- start.setDefaultNamespace()
- return start
-}
-
-// marshalInterface marshals a Marshaler interface value.
-func (p *printer) marshalInterface(val Marshaler, start StartElement) error {
- // Push a marker onto the tag stack so that MarshalXML
- // cannot close the XML tags that it did not open.
- p.tags = append(p.tags, Name{})
- n := len(p.tags)
-
- err := val.MarshalXML(p.encoder, start)
- if err != nil {
- return err
- }
-
- // Make sure MarshalXML closed all its tags. p.tags[n-1] is the mark.
- if len(p.tags) > n {
- return fmt.Errorf("xml: %s.MarshalXML wrote invalid XML: <%s> not closed", receiverType(val), p.tags[len(p.tags)-1].Local)
- }
- p.tags = p.tags[:n-1]
- return nil
-}
-
-// marshalTextInterface marshals a TextMarshaler interface value.
-func (p *printer) marshalTextInterface(val encoding.TextMarshaler, start StartElement) error {
- if err := p.writeStart(&start); err != nil {
- return err
- }
- text, err := val.MarshalText()
- if err != nil {
- return err
- }
- EscapeText(p, text)
- return p.writeEnd(start.Name)
-}
-
-// writeStart writes the given start element.
-func (p *printer) writeStart(start *StartElement) error {
- if start.Name.Local == "" {
- return fmt.Errorf("xml: start tag with no name")
- }
-
- p.tags = append(p.tags, start.Name)
- p.markPrefix()
- // Define any name spaces explicitly declared in the attributes.
- // We do this as a separate pass so that explicitly declared prefixes
- // will take precedence over implicitly declared prefixes
- // regardless of the order of the attributes.
- ignoreNonEmptyDefault := start.Name.Space == ""
- for _, attr := range start.Attr {
- if err := p.defineNS(attr, ignoreNonEmptyDefault); err != nil {
- return err
- }
- }
- // Define any new name spaces implied by the attributes.
- for _, attr := range start.Attr {
- name := attr.Name
- // From http://www.w3.org/TR/xml-names11/#defaulting
- // "Default namespace declarations do not apply directly
- // to attribute names; the interpretation of unprefixed
- // attributes is determined by the element on which they
- // appear."
- // This means we don't need to create a new namespace
- // when an attribute name space is empty.
- if name.Space != "" && !name.isNamespace() {
- p.createNSPrefix(name.Space, true)
- }
- }
- p.createNSPrefix(start.Name.Space, false)
-
- p.writeIndent(1)
- p.WriteByte('<')
- p.writeName(start.Name, false)
- p.writeNamespaces()
- for _, attr := range start.Attr {
- name := attr.Name
- if name.Local == "" || name.isNamespace() {
- // Namespaces have already been written by writeNamespaces above.
- continue
- }
- p.WriteByte(' ')
- p.writeName(name, true)
- p.WriteString(`="`)
- p.EscapeString(attr.Value)
- p.WriteByte('"')
- }
- p.WriteByte('>')
- return nil
-}
-
-// writeName writes the given name. It assumes
-// that p.createNSPrefix(name) has already been called.
-func (p *printer) writeName(name Name, isAttr bool) {
- if prefix := p.prefixForNS(name.Space, isAttr); prefix != "" {
- p.WriteString(prefix)
- p.WriteByte(':')
- }
- p.WriteString(name.Local)
-}
-
-func (p *printer) writeEnd(name Name) error {
- if name.Local == "" {
- return fmt.Errorf("xml: end tag with no name")
- }
- if len(p.tags) == 0 || p.tags[len(p.tags)-1].Local == "" {
- return fmt.Errorf("xml: end tag </%s> without start tag", name.Local)
- }
- if top := p.tags[len(p.tags)-1]; top != name {
- if top.Local != name.Local {
- return fmt.Errorf("xml: end tag </%s> does not match start tag <%s>", name.Local, top.Local)
- }
- return fmt.Errorf("xml: end tag </%s> in namespace %s does not match start tag <%s> in namespace %s", name.Local, name.Space, top.Local, top.Space)
- }
- p.tags = p.tags[:len(p.tags)-1]
-
- p.writeIndent(-1)
- p.WriteByte('<')
- p.WriteByte('/')
- p.writeName(name, false)
- p.WriteByte('>')
- p.popPrefix()
- return nil
-}
-
-func (p *printer) marshalSimple(typ reflect.Type, val reflect.Value) (string, []byte, error) {
- switch val.Kind() {
- case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
- return strconv.FormatInt(val.Int(), 10), nil, nil
- case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
- return strconv.FormatUint(val.Uint(), 10), nil, nil
- case reflect.Float32, reflect.Float64:
- return strconv.FormatFloat(val.Float(), 'g', -1, val.Type().Bits()), nil, nil
- case reflect.String:
- return val.String(), nil, nil
- case reflect.Bool:
- return strconv.FormatBool(val.Bool()), nil, nil
- case reflect.Array:
- if typ.Elem().Kind() != reflect.Uint8 {
- break
- }
- // [...]byte
- var bytes []byte
- if val.CanAddr() {
- bytes = val.Slice(0, val.Len()).Bytes()
- } else {
- bytes = make([]byte, val.Len())
- reflect.Copy(reflect.ValueOf(bytes), val)
- }
- return "", bytes, nil
- case reflect.Slice:
- if typ.Elem().Kind() != reflect.Uint8 {
- break
- }
- // []byte
- return "", val.Bytes(), nil
- }
- return "", nil, &UnsupportedTypeError{typ}
-}
-
-var ddBytes = []byte("--")
-
-func (p *printer) marshalStruct(tinfo *typeInfo, val reflect.Value) error {
- s := parentStack{p: p}
- for i := range tinfo.fields {
- finfo := &tinfo.fields[i]
- if finfo.flags&fAttr != 0 {
- continue
- }
- vf := finfo.value(val)
-
- // Dereference or skip nil pointer, interface values.
- switch vf.Kind() {
- case reflect.Ptr, reflect.Interface:
- if !vf.IsNil() {
- vf = vf.Elem()
- }
- }
-
- switch finfo.flags & fMode {
- case fCharData:
- if err := s.setParents(&noField, reflect.Value{}); err != nil {
- return err
- }
- if vf.CanInterface() && vf.Type().Implements(textMarshalerType) {
- data, err := vf.Interface().(encoding.TextMarshaler).MarshalText()
- if err != nil {
- return err
- }
- Escape(p, data)
- continue
- }
- if vf.CanAddr() {
- pv := vf.Addr()
- if pv.CanInterface() && pv.Type().Implements(textMarshalerType) {
- data, err := pv.Interface().(encoding.TextMarshaler).MarshalText()
- if err != nil {
- return err
- }
- Escape(p, data)
- continue
- }
- }
- var scratch [64]byte
- switch vf.Kind() {
- case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
- Escape(p, strconv.AppendInt(scratch[:0], vf.Int(), 10))
- case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
- Escape(p, strconv.AppendUint(scratch[:0], vf.Uint(), 10))
- case reflect.Float32, reflect.Float64:
- Escape(p, strconv.AppendFloat(scratch[:0], vf.Float(), 'g', -1, vf.Type().Bits()))
- case reflect.Bool:
- Escape(p, strconv.AppendBool(scratch[:0], vf.Bool()))
- case reflect.String:
- if err := EscapeText(p, []byte(vf.String())); err != nil {
- return err
- }
- case reflect.Slice:
- if elem, ok := vf.Interface().([]byte); ok {
- if err := EscapeText(p, elem); err != nil {
- return err
- }
- }
- }
- continue
-
- case fComment:
- if err := s.setParents(&noField, reflect.Value{}); err != nil {
- return err
- }
- k := vf.Kind()
- if !(k == reflect.String || k == reflect.Slice && vf.Type().Elem().Kind() == reflect.Uint8) {
- return fmt.Errorf("xml: bad type for comment field of %s", val.Type())
- }
- if vf.Len() == 0 {
- continue
- }
- p.writeIndent(0)
- p.WriteString("<!--")
- dashDash := false
- dashLast := false
- switch k {
- case reflect.String:
- s := vf.String()
- dashDash = strings.Index(s, "--") >= 0
- dashLast = s[len(s)-1] == '-'
- if !dashDash {
- p.WriteString(s)
- }
- case reflect.Slice:
- b := vf.Bytes()
- dashDash = bytes.Index(b, ddBytes) >= 0
- dashLast = b[len(b)-1] == '-'
- if !dashDash {
- p.Write(b)
- }
- default:
- panic("can't happen")
- }
- if dashDash {
- return fmt.Errorf(`xml: comments must not contain "--"`)
- }
- if dashLast {
- // "--->" is invalid grammar. Make it "- -->"
- p.WriteByte(' ')
- }
- p.WriteString("-->")
- continue
-
- case fInnerXml:
- iface := vf.Interface()
- switch raw := iface.(type) {
- case []byte:
- p.Write(raw)
- continue
- case string:
- p.WriteString(raw)
- continue
- }
-
- case fElement, fElement | fAny:
- if err := s.setParents(finfo, vf); err != nil {
- return err
- }
- }
- if err := p.marshalValue(vf, finfo, nil); err != nil {
- return err
- }
- }
- if err := s.setParents(&noField, reflect.Value{}); err != nil {
- return err
- }
- return p.cachedWriteError()
-}
-
-var noField fieldInfo
-
-// return the bufio Writer's cached write error
-func (p *printer) cachedWriteError() error {
- _, err := p.Write(nil)
- return err
-}
-
-func (p *printer) writeIndent(depthDelta int) {
- if len(p.prefix) == 0 && len(p.indent) == 0 {
- return
- }
- if depthDelta < 0 {
- p.depth--
- if p.indentedIn {
- p.indentedIn = false
- return
- }
- p.indentedIn = false
- }
- if p.putNewline {
- p.WriteByte('\n')
- } else {
- p.putNewline = true
- }
- if len(p.prefix) > 0 {
- p.WriteString(p.prefix)
- }
- if len(p.indent) > 0 {
- for i := 0; i < p.depth; i++ {
- p.WriteString(p.indent)
- }
- }
- if depthDelta > 0 {
- p.depth++
- p.indentedIn = true
- }
-}
-
-type parentStack struct {
- p *printer
- xmlns string
- parents []string
-}
-
-// setParents sets the stack of current parents to those found in finfo.
-// It only writes the start elements if vf holds a non-nil value.
-// If finfo is &noField, it pops all elements.
-func (s *parentStack) setParents(finfo *fieldInfo, vf reflect.Value) error {
- xmlns := s.p.defaultNS
- if finfo.xmlns != "" {
- xmlns = finfo.xmlns
- }
- commonParents := 0
- if xmlns == s.xmlns {
- for ; commonParents < len(finfo.parents) && commonParents < len(s.parents); commonParents++ {
- if finfo.parents[commonParents] != s.parents[commonParents] {
- break
- }
- }
- }
- // Pop off any parents that aren't in common with the previous field.
- for i := len(s.parents) - 1; i >= commonParents; i-- {
- if err := s.p.writeEnd(Name{
- Space: s.xmlns,
- Local: s.parents[i],
- }); err != nil {
- return err
- }
- }
- s.parents = finfo.parents
- s.xmlns = xmlns
- if commonParents >= len(s.parents) {
- // No new elements to push.
- return nil
- }
- if (vf.Kind() == reflect.Ptr || vf.Kind() == reflect.Interface) && vf.IsNil() {
- // The element is nil, so no need for the start elements.
- s.parents = s.parents[:commonParents]
- return nil
- }
- // Push any new parents required.
- for _, name := range s.parents[commonParents:] {
- start := &StartElement{
- Name: Name{
- Space: s.xmlns,
- Local: name,
- },
- }
- // Set the default name space for parent elements
- // to match what we do with other elements.
- if s.xmlns != s.p.defaultNS {
- start.setDefaultNamespace()
- }
- if err := s.p.writeStart(start); err != nil {
- return err
- }
- }
- return nil
-}
-
-// A MarshalXMLError is returned when Marshal encounters a type
-// that cannot be converted into XML.
-type UnsupportedTypeError struct {
- Type reflect.Type
-}
-
-func (e *UnsupportedTypeError) Error() string {
- return "xml: unsupported type: " + e.Type.String()
-}
-
-func isEmptyValue(v reflect.Value) bool {
- switch v.Kind() {
- case reflect.Array, reflect.Map, reflect.Slice, reflect.String:
- return v.Len() == 0
- case reflect.Bool:
- return !v.Bool()
- case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
- return v.Int() == 0
- case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
- return v.Uint() == 0
- case reflect.Float32, reflect.Float64:
- return v.Float() == 0
- case reflect.Interface, reflect.Ptr:
- return v.IsNil()
- }
- return false
-}
diff --git a/vendor/golang.org/x/net/webdav/internal/xml/read.go b/vendor/golang.org/x/net/webdav/internal/xml/read.go
deleted file mode 100644
index 4089056..0000000
--- a/vendor/golang.org/x/net/webdav/internal/xml/read.go
+++ /dev/null
@@ -1,692 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package xml
-
-import (
- "bytes"
- "encoding"
- "errors"
- "fmt"
- "reflect"
- "strconv"
- "strings"
-)
-
-// BUG(rsc): Mapping between XML elements and data structures is inherently flawed:
-// an XML element is an order-dependent collection of anonymous
-// values, while a data structure is an order-independent collection
-// of named values.
-// See package json for a textual representation more suitable
-// to data structures.
-
-// Unmarshal parses the XML-encoded data and stores the result in
-// the value pointed to by v, which must be an arbitrary struct,
-// slice, or string. Well-formed data that does not fit into v is
-// discarded.
-//
-// Because Unmarshal uses the reflect package, it can only assign
-// to exported (upper case) fields. Unmarshal uses a case-sensitive
-// comparison to match XML element names to tag values and struct
-// field names.
-//
-// Unmarshal maps an XML element to a struct using the following rules.
-// In the rules, the tag of a field refers to the value associated with the
-// key 'xml' in the struct field's tag (see the example above).
-//
-// * If the struct has a field of type []byte or string with tag
-// ",innerxml", Unmarshal accumulates the raw XML nested inside the
-// element in that field. The rest of the rules still apply.
-//
-// * If the struct has a field named XMLName of type xml.Name,
-// Unmarshal records the element name in that field.
-//
-// * If the XMLName field has an associated tag of the form
-// "name" or "namespace-URL name", the XML element must have
-// the given name (and, optionally, name space) or else Unmarshal
-// returns an error.
-//
-// * If the XML element has an attribute whose name matches a
-// struct field name with an associated tag containing ",attr" or
-// the explicit name in a struct field tag of the form "name,attr",
-// Unmarshal records the attribute value in that field.
-//
-// * If the XML element contains character data, that data is
-// accumulated in the first struct field that has tag ",chardata".
-// The struct field may have type []byte or string.
-// If there is no such field, the character data is discarded.
-//
-// * If the XML element contains comments, they are accumulated in
-// the first struct field that has tag ",comment". The struct
-// field may have type []byte or string. If there is no such
-// field, the comments are discarded.
-//
-// * If the XML element contains a sub-element whose name matches
-// the prefix of a tag formatted as "a" or "a>b>c", unmarshal
-// will descend into the XML structure looking for elements with the
-// given names, and will map the innermost elements to that struct
-// field. A tag starting with ">" is equivalent to one starting
-// with the field name followed by ">".
-//
-// * If the XML element contains a sub-element whose name matches
-// a struct field's XMLName tag and the struct field has no
-// explicit name tag as per the previous rule, unmarshal maps
-// the sub-element to that struct field.
-//
-// * If the XML element contains a sub-element whose name matches a
-// field without any mode flags (",attr", ",chardata", etc), Unmarshal
-// maps the sub-element to that struct field.
-//
-// * If the XML element contains a sub-element that hasn't matched any
-// of the above rules and the struct has a field with tag ",any",
-// unmarshal maps the sub-element to that struct field.
-//
-// * An anonymous struct field is handled as if the fields of its
-// value were part of the outer struct.
-//
-// * A struct field with tag "-" is never unmarshalled into.
-//
-// Unmarshal maps an XML element to a string or []byte by saving the
-// concatenation of that element's character data in the string or
-// []byte. The saved []byte is never nil.
-//
-// Unmarshal maps an attribute value to a string or []byte by saving
-// the value in the string or slice.
-//
-// Unmarshal maps an XML element to a slice by extending the length of
-// the slice and mapping the element to the newly created value.
-//
-// Unmarshal maps an XML element or attribute value to a bool by
-// setting it to the boolean value represented by the string.
-//
-// Unmarshal maps an XML element or attribute value to an integer or
-// floating-point field by setting the field to the result of
-// interpreting the string value in decimal. There is no check for
-// overflow.
-//
-// Unmarshal maps an XML element to an xml.Name by recording the
-// element name.
-//
-// Unmarshal maps an XML element to a pointer by setting the pointer
-// to a freshly allocated value and then mapping the element to that value.
-//
-func Unmarshal(data []byte, v interface{}) error {
- return NewDecoder(bytes.NewReader(data)).Decode(v)
-}
-
-// Decode works like xml.Unmarshal, except it reads the decoder
-// stream to find the start element.
-func (d *Decoder) Decode(v interface{}) error {
- return d.DecodeElement(v, nil)
-}
-
-// DecodeElement works like xml.Unmarshal except that it takes
-// a pointer to the start XML element to decode into v.
-// It is useful when a client reads some raw XML tokens itself
-// but also wants to defer to Unmarshal for some elements.
-func (d *Decoder) DecodeElement(v interface{}, start *StartElement) error {
- val := reflect.ValueOf(v)
- if val.Kind() != reflect.Ptr {
- return errors.New("non-pointer passed to Unmarshal")
- }
- return d.unmarshal(val.Elem(), start)
-}
-
-// An UnmarshalError represents an error in the unmarshalling process.
-type UnmarshalError string
-
-func (e UnmarshalError) Error() string { return string(e) }
-
-// Unmarshaler is the interface implemented by objects that can unmarshal
-// an XML element description of themselves.
-//
-// UnmarshalXML decodes a single XML element
-// beginning with the given start element.
-// If it returns an error, the outer call to Unmarshal stops and
-// returns that error.
-// UnmarshalXML must consume exactly one XML element.
-// One common implementation strategy is to unmarshal into
-// a separate value with a layout matching the expected XML
-// using d.DecodeElement, and then to copy the data from
-// that value into the receiver.
-// Another common strategy is to use d.Token to process the
-// XML object one token at a time.
-// UnmarshalXML may not use d.RawToken.
-type Unmarshaler interface {
- UnmarshalXML(d *Decoder, start StartElement) error
-}
-
-// UnmarshalerAttr is the interface implemented by objects that can unmarshal
-// an XML attribute description of themselves.
-//
-// UnmarshalXMLAttr decodes a single XML attribute.
-// If it returns an error, the outer call to Unmarshal stops and
-// returns that error.
-// UnmarshalXMLAttr is used only for struct fields with the
-// "attr" option in the field tag.
-type UnmarshalerAttr interface {
- UnmarshalXMLAttr(attr Attr) error
-}
-
-// receiverType returns the receiver type to use in an expression like "%s.MethodName".
-func receiverType(val interface{}) string {
- t := reflect.TypeOf(val)
- if t.Name() != "" {
- return t.String()
- }
- return "(" + t.String() + ")"
-}
-
-// unmarshalInterface unmarshals a single XML element into val.
-// start is the opening tag of the element.
-func (p *Decoder) unmarshalInterface(val Unmarshaler, start *StartElement) error {
- // Record that decoder must stop at end tag corresponding to start.
- p.pushEOF()
-
- p.unmarshalDepth++
- err := val.UnmarshalXML(p, *start)
- p.unmarshalDepth--
- if err != nil {
- p.popEOF()
- return err
- }
-
- if !p.popEOF() {
- return fmt.Errorf("xml: %s.UnmarshalXML did not consume entire <%s> element", receiverType(val), start.Name.Local)
- }
-
- return nil
-}
-
-// unmarshalTextInterface unmarshals a single XML element into val.
-// The chardata contained in the element (but not its children)
-// is passed to the text unmarshaler.
-func (p *Decoder) unmarshalTextInterface(val encoding.TextUnmarshaler, start *StartElement) error {
- var buf []byte
- depth := 1
- for depth > 0 {
- t, err := p.Token()
- if err != nil {
- return err
- }
- switch t := t.(type) {
- case CharData:
- if depth == 1 {
- buf = append(buf, t...)
- }
- case StartElement:
- depth++
- case EndElement:
- depth--
- }
- }
- return val.UnmarshalText(buf)
-}
-
-// unmarshalAttr unmarshals a single XML attribute into val.
-func (p *Decoder) unmarshalAttr(val reflect.Value, attr Attr) error {
- if val.Kind() == reflect.Ptr {
- if val.IsNil() {
- val.Set(reflect.New(val.Type().Elem()))
- }
- val = val.Elem()
- }
-
- if val.CanInterface() && val.Type().Implements(unmarshalerAttrType) {
- // This is an unmarshaler with a non-pointer receiver,
- // so it's likely to be incorrect, but we do what we're told.
- return val.Interface().(UnmarshalerAttr).UnmarshalXMLAttr(attr)
- }
- if val.CanAddr() {
- pv := val.Addr()
- if pv.CanInterface() && pv.Type().Implements(unmarshalerAttrType) {
- return pv.Interface().(UnmarshalerAttr).UnmarshalXMLAttr(attr)
- }
- }
-
- // Not an UnmarshalerAttr; try encoding.TextUnmarshaler.
- if val.CanInterface() && val.Type().Implements(textUnmarshalerType) {
- // This is an unmarshaler with a non-pointer receiver,
- // so it's likely to be incorrect, but we do what we're told.
- return val.Interface().(encoding.TextUnmarshaler).UnmarshalText([]byte(attr.Value))
- }
- if val.CanAddr() {
- pv := val.Addr()
- if pv.CanInterface() && pv.Type().Implements(textUnmarshalerType) {
- return pv.Interface().(encoding.TextUnmarshaler).UnmarshalText([]byte(attr.Value))
- }
- }
-
- copyValue(val, []byte(attr.Value))
- return nil
-}
-
-var (
- unmarshalerType = reflect.TypeOf((*Unmarshaler)(nil)).Elem()
- unmarshalerAttrType = reflect.TypeOf((*UnmarshalerAttr)(nil)).Elem()
- textUnmarshalerType = reflect.TypeOf((*encoding.TextUnmarshaler)(nil)).Elem()
-)
-
-// Unmarshal a single XML element into val.
-func (p *Decoder) unmarshal(val reflect.Value, start *StartElement) error {
- // Find start element if we need it.
- if start == nil {
- for {
- tok, err := p.Token()
- if err != nil {
- return err
- }
- if t, ok := tok.(StartElement); ok {
- start = &t
- break
- }
- }
- }
-
- // Load value from interface, but only if the result will be
- // usefully addressable.
- if val.Kind() == reflect.Interface && !val.IsNil() {
- e := val.Elem()
- if e.Kind() == reflect.Ptr && !e.IsNil() {
- val = e
- }
- }
-
- if val.Kind() == reflect.Ptr {
- if val.IsNil() {
- val.Set(reflect.New(val.Type().Elem()))
- }
- val = val.Elem()
- }
-
- if val.CanInterface() && val.Type().Implements(unmarshalerType) {
- // This is an unmarshaler with a non-pointer receiver,
- // so it's likely to be incorrect, but we do what we're told.
- return p.unmarshalInterface(val.Interface().(Unmarshaler), start)
- }
-
- if val.CanAddr() {
- pv := val.Addr()
- if pv.CanInterface() && pv.Type().Implements(unmarshalerType) {
- return p.unmarshalInterface(pv.Interface().(Unmarshaler), start)
- }
- }
-
- if val.CanInterface() && val.Type().Implements(textUnmarshalerType) {
- return p.unmarshalTextInterface(val.Interface().(encoding.TextUnmarshaler), start)
- }
-
- if val.CanAddr() {
- pv := val.Addr()
- if pv.CanInterface() && pv.Type().Implements(textUnmarshalerType) {
- return p.unmarshalTextInterface(pv.Interface().(encoding.TextUnmarshaler), start)
- }
- }
-
- var (
- data []byte
- saveData reflect.Value
- comment []byte
- saveComment reflect.Value
- saveXML reflect.Value
- saveXMLIndex int
- saveXMLData []byte
- saveAny reflect.Value
- sv reflect.Value
- tinfo *typeInfo
- err error
- )
-
- switch v := val; v.Kind() {
- default:
- return errors.New("unknown type " + v.Type().String())
-
- case reflect.Interface:
- // TODO: For now, simply ignore the field. In the near
- // future we may choose to unmarshal the start
- // element on it, if not nil.
- return p.Skip()
-
- case reflect.Slice:
- typ := v.Type()
- if typ.Elem().Kind() == reflect.Uint8 {
- // []byte
- saveData = v
- break
- }
-
- // Slice of element values.
- // Grow slice.
- n := v.Len()
- if n >= v.Cap() {
- ncap := 2 * n
- if ncap < 4 {
- ncap = 4
- }
- new := reflect.MakeSlice(typ, n, ncap)
- reflect.Copy(new, v)
- v.Set(new)
- }
- v.SetLen(n + 1)
-
- // Recur to read element into slice.
- if err := p.unmarshal(v.Index(n), start); err != nil {
- v.SetLen(n)
- return err
- }
- return nil
-
- case reflect.Bool, reflect.Float32, reflect.Float64, reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr, reflect.String:
- saveData = v
-
- case reflect.Struct:
- typ := v.Type()
- if typ == nameType {
- v.Set(reflect.ValueOf(start.Name))
- break
- }
-
- sv = v
- tinfo, err = getTypeInfo(typ)
- if err != nil {
- return err
- }
-
- // Validate and assign element name.
- if tinfo.xmlname != nil {
- finfo := tinfo.xmlname
- if finfo.name != "" && finfo.name != start.Name.Local {
- return UnmarshalError("expected element type <" + finfo.name + "> but have <" + start.Name.Local + ">")
- }
- if finfo.xmlns != "" && finfo.xmlns != start.Name.Space {
- e := "expected element <" + finfo.name + "> in name space " + finfo.xmlns + " but have "
- if start.Name.Space == "" {
- e += "no name space"
- } else {
- e += start.Name.Space
- }
- return UnmarshalError(e)
- }
- fv := finfo.value(sv)
- if _, ok := fv.Interface().(Name); ok {
- fv.Set(reflect.ValueOf(start.Name))
- }
- }
-
- // Assign attributes.
- // Also, determine whether we need to save character data or comments.
- for i := range tinfo.fields {
- finfo := &tinfo.fields[i]
- switch finfo.flags & fMode {
- case fAttr:
- strv := finfo.value(sv)
- // Look for attribute.
- for _, a := range start.Attr {
- if a.Name.Local == finfo.name && (finfo.xmlns == "" || finfo.xmlns == a.Name.Space) {
- if err := p.unmarshalAttr(strv, a); err != nil {
- return err
- }
- break
- }
- }
-
- case fCharData:
- if !saveData.IsValid() {
- saveData = finfo.value(sv)
- }
-
- case fComment:
- if !saveComment.IsValid() {
- saveComment = finfo.value(sv)
- }
-
- case fAny, fAny | fElement:
- if !saveAny.IsValid() {
- saveAny = finfo.value(sv)
- }
-
- case fInnerXml:
- if !saveXML.IsValid() {
- saveXML = finfo.value(sv)
- if p.saved == nil {
- saveXMLIndex = 0
- p.saved = new(bytes.Buffer)
- } else {
- saveXMLIndex = p.savedOffset()
- }
- }
- }
- }
- }
-
- // Find end element.
- // Process sub-elements along the way.
-Loop:
- for {
- var savedOffset int
- if saveXML.IsValid() {
- savedOffset = p.savedOffset()
- }
- tok, err := p.Token()
- if err != nil {
- return err
- }
- switch t := tok.(type) {
- case StartElement:
- consumed := false
- if sv.IsValid() {
- consumed, err = p.unmarshalPath(tinfo, sv, nil, &t)
- if err != nil {
- return err
- }
- if !consumed && saveAny.IsValid() {
- consumed = true
- if err := p.unmarshal(saveAny, &t); err != nil {
- return err
- }
- }
- }
- if !consumed {
- if err := p.Skip(); err != nil {
- return err
- }
- }
-
- case EndElement:
- if saveXML.IsValid() {
- saveXMLData = p.saved.Bytes()[saveXMLIndex:savedOffset]
- if saveXMLIndex == 0 {
- p.saved = nil
- }
- }
- break Loop
-
- case CharData:
- if saveData.IsValid() {
- data = append(data, t...)
- }
-
- case Comment:
- if saveComment.IsValid() {
- comment = append(comment, t...)
- }
- }
- }
-
- if saveData.IsValid() && saveData.CanInterface() && saveData.Type().Implements(textUnmarshalerType) {
- if err := saveData.Interface().(encoding.TextUnmarshaler).UnmarshalText(data); err != nil {
- return err
- }
- saveData = reflect.Value{}
- }
-
- if saveData.IsValid() && saveData.CanAddr() {
- pv := saveData.Addr()
- if pv.CanInterface() && pv.Type().Implements(textUnmarshalerType) {
- if err := pv.Interface().(encoding.TextUnmarshaler).UnmarshalText(data); err != nil {
- return err
- }
- saveData = reflect.Value{}
- }
- }
-
- if err := copyValue(saveData, data); err != nil {
- return err
- }
-
- switch t := saveComment; t.Kind() {
- case reflect.String:
- t.SetString(string(comment))
- case reflect.Slice:
- t.Set(reflect.ValueOf(comment))
- }
-
- switch t := saveXML; t.Kind() {
- case reflect.String:
- t.SetString(string(saveXMLData))
- case reflect.Slice:
- t.Set(reflect.ValueOf(saveXMLData))
- }
-
- return nil
-}
-
-func copyValue(dst reflect.Value, src []byte) (err error) {
- dst0 := dst
-
- if dst.Kind() == reflect.Ptr {
- if dst.IsNil() {
- dst.Set(reflect.New(dst.Type().Elem()))
- }
- dst = dst.Elem()
- }
-
- // Save accumulated data.
- switch dst.Kind() {
- case reflect.Invalid:
- // Probably a comment.
- default:
- return errors.New("cannot unmarshal into " + dst0.Type().String())
- case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
- itmp, err := strconv.ParseInt(string(src), 10, dst.Type().Bits())
- if err != nil {
- return err
- }
- dst.SetInt(itmp)
- case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
- utmp, err := strconv.ParseUint(string(src), 10, dst.Type().Bits())
- if err != nil {
- return err
- }
- dst.SetUint(utmp)
- case reflect.Float32, reflect.Float64:
- ftmp, err := strconv.ParseFloat(string(src), dst.Type().Bits())
- if err != nil {
- return err
- }
- dst.SetFloat(ftmp)
- case reflect.Bool:
- value, err := strconv.ParseBool(strings.TrimSpace(string(src)))
- if err != nil {
- return err
- }
- dst.SetBool(value)
- case reflect.String:
- dst.SetString(string(src))
- case reflect.Slice:
- if len(src) == 0 {
- // non-nil to flag presence
- src = []byte{}
- }
- dst.SetBytes(src)
- }
- return nil
-}
-
-// unmarshalPath walks down an XML structure looking for wanted
-// paths, and calls unmarshal on them.
-// The consumed result tells whether XML elements have been consumed
-// from the Decoder until start's matching end element, or if it's
-// still untouched because start is uninteresting for sv's fields.
-func (p *Decoder) unmarshalPath(tinfo *typeInfo, sv reflect.Value, parents []string, start *StartElement) (consumed bool, err error) {
- recurse := false
-Loop:
- for i := range tinfo.fields {
- finfo := &tinfo.fields[i]
- if finfo.flags&fElement == 0 || len(finfo.parents) < len(parents) || finfo.xmlns != "" && finfo.xmlns != start.Name.Space {
- continue
- }
- for j := range parents {
- if parents[j] != finfo.parents[j] {
- continue Loop
- }
- }
- if len(finfo.parents) == len(parents) && finfo.name == start.Name.Local {
- // It's a perfect match, unmarshal the field.
- return true, p.unmarshal(finfo.value(sv), start)
- }
- if len(finfo.parents) > len(parents) && finfo.parents[len(parents)] == start.Name.Local {
- // It's a prefix for the field. Break and recurse
- // since it's not ok for one field path to be itself
- // the prefix for another field path.
- recurse = true
-
- // We can reuse the same slice as long as we
- // don't try to append to it.
- parents = finfo.parents[:len(parents)+1]
- break
- }
- }
- if !recurse {
- // We have no business with this element.
- return false, nil
- }
- // The element is not a perfect match for any field, but one
- // or more fields have the path to this element as a parent
- // prefix. Recurse and attempt to match these.
- for {
- var tok Token
- tok, err = p.Token()
- if err != nil {
- return true, err
- }
- switch t := tok.(type) {
- case StartElement:
- consumed2, err := p.unmarshalPath(tinfo, sv, parents, &t)
- if err != nil {
- return true, err
- }
- if !consumed2 {
- if err := p.Skip(); err != nil {
- return true, err
- }
- }
- case EndElement:
- return true, nil
- }
- }
-}
-
-// Skip reads tokens until it has consumed the end element
-// matching the most recent start element already consumed.
-// It recurs if it encounters a start element, so it can be used to
-// skip nested structures.
-// It returns nil if it finds an end element matching the start
-// element; otherwise it returns an error describing the problem.
-func (d *Decoder) Skip() error {
- for {
- tok, err := d.Token()
- if err != nil {
- return err
- }
- switch tok.(type) {
- case StartElement:
- if err := d.Skip(); err != nil {
- return err
- }
- case EndElement:
- return nil
- }
- }
-}
diff --git a/vendor/golang.org/x/net/webdav/internal/xml/typeinfo.go b/vendor/golang.org/x/net/webdav/internal/xml/typeinfo.go
deleted file mode 100644
index fdde288..0000000
--- a/vendor/golang.org/x/net/webdav/internal/xml/typeinfo.go
+++ /dev/null
@@ -1,371 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package xml
-
-import (
- "fmt"
- "reflect"
- "strings"
- "sync"
-)
-
-// typeInfo holds details for the xml representation of a type.
-type typeInfo struct {
- xmlname *fieldInfo
- fields []fieldInfo
-}
-
-// fieldInfo holds details for the xml representation of a single field.
-type fieldInfo struct {
- idx []int
- name string
- xmlns string
- flags fieldFlags
- parents []string
-}
-
-type fieldFlags int
-
-const (
- fElement fieldFlags = 1 << iota
- fAttr
- fCharData
- fInnerXml
- fComment
- fAny
-
- fOmitEmpty
-
- fMode = fElement | fAttr | fCharData | fInnerXml | fComment | fAny
-)
-
-var tinfoMap = make(map[reflect.Type]*typeInfo)
-var tinfoLock sync.RWMutex
-
-var nameType = reflect.TypeOf(Name{})
-
-// getTypeInfo returns the typeInfo structure with details necessary
-// for marshalling and unmarshalling typ.
-func getTypeInfo(typ reflect.Type) (*typeInfo, error) {
- tinfoLock.RLock()
- tinfo, ok := tinfoMap[typ]
- tinfoLock.RUnlock()
- if ok {
- return tinfo, nil
- }
- tinfo = &typeInfo{}
- if typ.Kind() == reflect.Struct && typ != nameType {
- n := typ.NumField()
- for i := 0; i < n; i++ {
- f := typ.Field(i)
- if f.PkgPath != "" || f.Tag.Get("xml") == "-" {
- continue // Private field
- }
-
- // For embedded structs, embed its fields.
- if f.Anonymous {
- t := f.Type
- if t.Kind() == reflect.Ptr {
- t = t.Elem()
- }
- if t.Kind() == reflect.Struct {
- inner, err := getTypeInfo(t)
- if err != nil {
- return nil, err
- }
- if tinfo.xmlname == nil {
- tinfo.xmlname = inner.xmlname
- }
- for _, finfo := range inner.fields {
- finfo.idx = append([]int{i}, finfo.idx...)
- if err := addFieldInfo(typ, tinfo, &finfo); err != nil {
- return nil, err
- }
- }
- continue
- }
- }
-
- finfo, err := structFieldInfo(typ, &f)
- if err != nil {
- return nil, err
- }
-
- if f.Name == "XMLName" {
- tinfo.xmlname = finfo
- continue
- }
-
- // Add the field if it doesn't conflict with other fields.
- if err := addFieldInfo(typ, tinfo, finfo); err != nil {
- return nil, err
- }
- }
- }
- tinfoLock.Lock()
- tinfoMap[typ] = tinfo
- tinfoLock.Unlock()
- return tinfo, nil
-}
-
-// structFieldInfo builds and returns a fieldInfo for f.
-func structFieldInfo(typ reflect.Type, f *reflect.StructField) (*fieldInfo, error) {
- finfo := &fieldInfo{idx: f.Index}
-
- // Split the tag from the xml namespace if necessary.
- tag := f.Tag.Get("xml")
- if i := strings.Index(tag, " "); i >= 0 {
- finfo.xmlns, tag = tag[:i], tag[i+1:]
- }
-
- // Parse flags.
- tokens := strings.Split(tag, ",")
- if len(tokens) == 1 {
- finfo.flags = fElement
- } else {
- tag = tokens[0]
- for _, flag := range tokens[1:] {
- switch flag {
- case "attr":
- finfo.flags |= fAttr
- case "chardata":
- finfo.flags |= fCharData
- case "innerxml":
- finfo.flags |= fInnerXml
- case "comment":
- finfo.flags |= fComment
- case "any":
- finfo.flags |= fAny
- case "omitempty":
- finfo.flags |= fOmitEmpty
- }
- }
-
- // Validate the flags used.
- valid := true
- switch mode := finfo.flags & fMode; mode {
- case 0:
- finfo.flags |= fElement
- case fAttr, fCharData, fInnerXml, fComment, fAny:
- if f.Name == "XMLName" || tag != "" && mode != fAttr {
- valid = false
- }
- default:
- // This will also catch multiple modes in a single field.
- valid = false
- }
- if finfo.flags&fMode == fAny {
- finfo.flags |= fElement
- }
- if finfo.flags&fOmitEmpty != 0 && finfo.flags&(fElement|fAttr) == 0 {
- valid = false
- }
- if !valid {
- return nil, fmt.Errorf("xml: invalid tag in field %s of type %s: %q",
- f.Name, typ, f.Tag.Get("xml"))
- }
- }
-
- // Use of xmlns without a name is not allowed.
- if finfo.xmlns != "" && tag == "" {
- return nil, fmt.Errorf("xml: namespace without name in field %s of type %s: %q",
- f.Name, typ, f.Tag.Get("xml"))
- }
-
- if f.Name == "XMLName" {
- // The XMLName field records the XML element name. Don't
- // process it as usual because its name should default to
- // empty rather than to the field name.
- finfo.name = tag
- return finfo, nil
- }
-
- if tag == "" {
- // If the name part of the tag is completely empty, get
- // default from XMLName of underlying struct if feasible,
- // or field name otherwise.
- if xmlname := lookupXMLName(f.Type); xmlname != nil {
- finfo.xmlns, finfo.name = xmlname.xmlns, xmlname.name
- } else {
- finfo.name = f.Name
- }
- return finfo, nil
- }
-
- if finfo.xmlns == "" && finfo.flags&fAttr == 0 {
- // If it's an element no namespace specified, get the default
- // from the XMLName of enclosing struct if possible.
- if xmlname := lookupXMLName(typ); xmlname != nil {
- finfo.xmlns = xmlname.xmlns
- }
- }
-
- // Prepare field name and parents.
- parents := strings.Split(tag, ">")
- if parents[0] == "" {
- parents[0] = f.Name
- }
- if parents[len(parents)-1] == "" {
- return nil, fmt.Errorf("xml: trailing '>' in field %s of type %s", f.Name, typ)
- }
- finfo.name = parents[len(parents)-1]
- if len(parents) > 1 {
- if (finfo.flags & fElement) == 0 {
- return nil, fmt.Errorf("xml: %s chain not valid with %s flag", tag, strings.Join(tokens[1:], ","))
- }
- finfo.parents = parents[:len(parents)-1]
- }
-
- // If the field type has an XMLName field, the names must match
- // so that the behavior of both marshalling and unmarshalling
- // is straightforward and unambiguous.
- if finfo.flags&fElement != 0 {
- ftyp := f.Type
- xmlname := lookupXMLName(ftyp)
- if xmlname != nil && xmlname.name != finfo.name {
- return nil, fmt.Errorf("xml: name %q in tag of %s.%s conflicts with name %q in %s.XMLName",
- finfo.name, typ, f.Name, xmlname.name, ftyp)
- }
- }
- return finfo, nil
-}
-
-// lookupXMLName returns the fieldInfo for typ's XMLName field
-// in case it exists and has a valid xml field tag, otherwise
-// it returns nil.
-func lookupXMLName(typ reflect.Type) (xmlname *fieldInfo) {
- for typ.Kind() == reflect.Ptr {
- typ = typ.Elem()
- }
- if typ.Kind() != reflect.Struct {
- return nil
- }
- for i, n := 0, typ.NumField(); i < n; i++ {
- f := typ.Field(i)
- if f.Name != "XMLName" {
- continue
- }
- finfo, err := structFieldInfo(typ, &f)
- if finfo.name != "" && err == nil {
- return finfo
- }
- // Also consider errors as a non-existent field tag
- // and let getTypeInfo itself report the error.
- break
- }
- return nil
-}
-
-func min(a, b int) int {
- if a <= b {
- return a
- }
- return b
-}
-
-// addFieldInfo adds finfo to tinfo.fields if there are no
-// conflicts, or if conflicts arise from previous fields that were
-// obtained from deeper embedded structures than finfo. In the latter
-// case, the conflicting entries are dropped.
-// A conflict occurs when the path (parent + name) to a field is
-// itself a prefix of another path, or when two paths match exactly.
-// It is okay for field paths to share a common, shorter prefix.
-func addFieldInfo(typ reflect.Type, tinfo *typeInfo, newf *fieldInfo) error {
- var conflicts []int
-Loop:
- // First, figure all conflicts. Most working code will have none.
- for i := range tinfo.fields {
- oldf := &tinfo.fields[i]
- if oldf.flags&fMode != newf.flags&fMode {
- continue
- }
- if oldf.xmlns != "" && newf.xmlns != "" && oldf.xmlns != newf.xmlns {
- continue
- }
- minl := min(len(newf.parents), len(oldf.parents))
- for p := 0; p < minl; p++ {
- if oldf.parents[p] != newf.parents[p] {
- continue Loop
- }
- }
- if len(oldf.parents) > len(newf.parents) {
- if oldf.parents[len(newf.parents)] == newf.name {
- conflicts = append(conflicts, i)
- }
- } else if len(oldf.parents) < len(newf.parents) {
- if newf.parents[len(oldf.parents)] == oldf.name {
- conflicts = append(conflicts, i)
- }
- } else {
- if newf.name == oldf.name {
- conflicts = append(conflicts, i)
- }
- }
- }
- // Without conflicts, add the new field and return.
- if conflicts == nil {
- tinfo.fields = append(tinfo.fields, *newf)
- return nil
- }
-
- // If any conflict is shallower, ignore the new field.
- // This matches the Go field resolution on embedding.
- for _, i := range conflicts {
- if len(tinfo.fields[i].idx) < len(newf.idx) {
- return nil
- }
- }
-
- // Otherwise, if any of them is at the same depth level, it's an error.
- for _, i := range conflicts {
- oldf := &tinfo.fields[i]
- if len(oldf.idx) == len(newf.idx) {
- f1 := typ.FieldByIndex(oldf.idx)
- f2 := typ.FieldByIndex(newf.idx)
- return &TagPathError{typ, f1.Name, f1.Tag.Get("xml"), f2.Name, f2.Tag.Get("xml")}
- }
- }
-
- // Otherwise, the new field is shallower, and thus takes precedence,
- // so drop the conflicting fields from tinfo and append the new one.
- for c := len(conflicts) - 1; c >= 0; c-- {
- i := conflicts[c]
- copy(tinfo.fields[i:], tinfo.fields[i+1:])
- tinfo.fields = tinfo.fields[:len(tinfo.fields)-1]
- }
- tinfo.fields = append(tinfo.fields, *newf)
- return nil
-}
-
-// A TagPathError represents an error in the unmarshalling process
-// caused by the use of field tags with conflicting paths.
-type TagPathError struct {
- Struct reflect.Type
- Field1, Tag1 string
- Field2, Tag2 string
-}
-
-func (e *TagPathError) Error() string {
- return fmt.Sprintf("%s field %q with tag %q conflicts with field %q with tag %q", e.Struct, e.Field1, e.Tag1, e.Field2, e.Tag2)
-}
-
-// value returns v's field value corresponding to finfo.
-// It's equivalent to v.FieldByIndex(finfo.idx), but initializes
-// and dereferences pointers as necessary.
-func (finfo *fieldInfo) value(v reflect.Value) reflect.Value {
- for i, x := range finfo.idx {
- if i > 0 {
- t := v.Type()
- if t.Kind() == reflect.Ptr && t.Elem().Kind() == reflect.Struct {
- if v.IsNil() {
- v.Set(reflect.New(v.Type().Elem()))
- }
- v = v.Elem()
- }
- }
- v = v.Field(x)
- }
- return v
-}
diff --git a/vendor/golang.org/x/net/webdav/internal/xml/xml.go b/vendor/golang.org/x/net/webdav/internal/xml/xml.go
deleted file mode 100644
index 5b79cbe..0000000
--- a/vendor/golang.org/x/net/webdav/internal/xml/xml.go
+++ /dev/null
@@ -1,1998 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package xml implements a simple XML 1.0 parser that
-// understands XML name spaces.
-package xml
-
-// References:
-// Annotated XML spec: http://www.xml.com/axml/testaxml.htm
-// XML name spaces: http://www.w3.org/TR/REC-xml-names/
-
-// TODO(rsc):
-// Test error handling.
-
-import (
- "bufio"
- "bytes"
- "errors"
- "fmt"
- "io"
- "strconv"
- "strings"
- "unicode"
- "unicode/utf8"
-)
-
-// A SyntaxError represents a syntax error in the XML input stream.
-type SyntaxError struct {
- Msg string
- Line int
-}
-
-func (e *SyntaxError) Error() string {
- return "XML syntax error on line " + strconv.Itoa(e.Line) + ": " + e.Msg
-}
-
-// A Name represents an XML name (Local) annotated with a name space
-// identifier (Space). In tokens returned by Decoder.Token, the Space
-// identifier is given as a canonical URL, not the short prefix used in
-// the document being parsed.
-//
-// As a special case, XML namespace declarations will use the literal
-// string "xmlns" for the Space field instead of the fully resolved URL.
-// See Encoder.EncodeToken for more information on namespace encoding
-// behaviour.
-type Name struct {
- Space, Local string
-}
-
-// isNamespace reports whether the name is a namespace-defining name.
-func (name Name) isNamespace() bool {
- return name.Local == "xmlns" || name.Space == "xmlns"
-}
-
-// An Attr represents an attribute in an XML element (Name=Value).
-type Attr struct {
- Name Name
- Value string
-}
-
-// A Token is an interface holding one of the token types:
-// StartElement, EndElement, CharData, Comment, ProcInst, or Directive.
-type Token interface{}
-
-// A StartElement represents an XML start element.
-type StartElement struct {
- Name Name
- Attr []Attr
-}
-
-func (e StartElement) Copy() StartElement {
- attrs := make([]Attr, len(e.Attr))
- copy(attrs, e.Attr)
- e.Attr = attrs
- return e
-}
-
-// End returns the corresponding XML end element.
-func (e StartElement) End() EndElement {
- return EndElement{e.Name}
-}
-
-// setDefaultNamespace sets the namespace of the element
-// as the default for all elements contained within it.
-func (e *StartElement) setDefaultNamespace() {
- if e.Name.Space == "" {
- // If there's no namespace on the element, don't
- // set the default. Strictly speaking this might be wrong, as
- // we can't tell if the element had no namespace set
- // or was just using the default namespace.
- return
- }
- // Don't add a default name space if there's already one set.
- for _, attr := range e.Attr {
- if attr.Name.Space == "" && attr.Name.Local == "xmlns" {
- return
- }
- }
- e.Attr = append(e.Attr, Attr{
- Name: Name{
- Local: "xmlns",
- },
- Value: e.Name.Space,
- })
-}
-
-// An EndElement represents an XML end element.
-type EndElement struct {
- Name Name
-}
-
-// A CharData represents XML character data (raw text),
-// in which XML escape sequences have been replaced by
-// the characters they represent.
-type CharData []byte
-
-func makeCopy(b []byte) []byte {
- b1 := make([]byte, len(b))
- copy(b1, b)
- return b1
-}
-
-func (c CharData) Copy() CharData { return CharData(makeCopy(c)) }
-
-// A Comment represents an XML comment of the form <!--comment-->.
-// The bytes do not include the <!-- and --> comment markers.
-type Comment []byte
-
-func (c Comment) Copy() Comment { return Comment(makeCopy(c)) }
-
-// A ProcInst represents an XML processing instruction of the form <?target inst?>
-type ProcInst struct {
- Target string
- Inst []byte
-}
-
-func (p ProcInst) Copy() ProcInst {
- p.Inst = makeCopy(p.Inst)
- return p
-}
-
-// A Directive represents an XML directive of the form <!text>.
-// The bytes do not include the <! and > markers.
-type Directive []byte
-
-func (d Directive) Copy() Directive { return Directive(makeCopy(d)) }
-
-// CopyToken returns a copy of a Token.
-func CopyToken(t Token) Token {
- switch v := t.(type) {
- case CharData:
- return v.Copy()
- case Comment:
- return v.Copy()
- case Directive:
- return v.Copy()
- case ProcInst:
- return v.Copy()
- case StartElement:
- return v.Copy()
- }
- return t
-}
-
-// A Decoder represents an XML parser reading a particular input stream.
-// The parser assumes that its input is encoded in UTF-8.
-type Decoder struct {
- // Strict defaults to true, enforcing the requirements
- // of the XML specification.
- // If set to false, the parser allows input containing common
- // mistakes:
- // * If an element is missing an end tag, the parser invents
- // end tags as necessary to keep the return values from Token
- // properly balanced.
- // * In attribute values and character data, unknown or malformed
- // character entities (sequences beginning with &) are left alone.
- //
- // Setting:
- //
- // d.Strict = false;
- // d.AutoClose = HTMLAutoClose;
- // d.Entity = HTMLEntity
- //
- // creates a parser that can handle typical HTML.
- //
- // Strict mode does not enforce the requirements of the XML name spaces TR.
- // In particular it does not reject name space tags using undefined prefixes.
- // Such tags are recorded with the unknown prefix as the name space URL.
- Strict bool
-
- // When Strict == false, AutoClose indicates a set of elements to
- // consider closed immediately after they are opened, regardless
- // of whether an end element is present.
- AutoClose []string
-
- // Entity can be used to map non-standard entity names to string replacements.
- // The parser behaves as if these standard mappings are present in the map,
- // regardless of the actual map content:
- //
- // "lt": "<",
- // "gt": ">",
- // "amp": "&",
- // "apos": "'",
- // "quot": `"`,
- Entity map[string]string
-
- // CharsetReader, if non-nil, defines a function to generate
- // charset-conversion readers, converting from the provided
- // non-UTF-8 charset into UTF-8. If CharsetReader is nil or
- // returns an error, parsing stops with an error. One of the
- // the CharsetReader's result values must be non-nil.
- CharsetReader func(charset string, input io.Reader) (io.Reader, error)
-
- // DefaultSpace sets the default name space used for unadorned tags,
- // as if the entire XML stream were wrapped in an element containing
- // the attribute xmlns="DefaultSpace".
- DefaultSpace string
-
- r io.ByteReader
- buf bytes.Buffer
- saved *bytes.Buffer
- stk *stack
- free *stack
- needClose bool
- toClose Name
- nextToken Token
- nextByte int
- ns map[string]string
- err error
- line int
- offset int64
- unmarshalDepth int
-}
-
-// NewDecoder creates a new XML parser reading from r.
-// If r does not implement io.ByteReader, NewDecoder will
-// do its own buffering.
-func NewDecoder(r io.Reader) *Decoder {
- d := &Decoder{
- ns: make(map[string]string),
- nextByte: -1,
- line: 1,
- Strict: true,
- }
- d.switchToReader(r)
- return d
-}
-
-// Token returns the next XML token in the input stream.
-// At the end of the input stream, Token returns nil, io.EOF.
-//
-// Slices of bytes in the returned token data refer to the
-// parser's internal buffer and remain valid only until the next
-// call to Token. To acquire a copy of the bytes, call CopyToken
-// or the token's Copy method.
-//
-// Token expands self-closing elements such as <br/>
-// into separate start and end elements returned by successive calls.
-//
-// Token guarantees that the StartElement and EndElement
-// tokens it returns are properly nested and matched:
-// if Token encounters an unexpected end element,
-// it will return an error.
-//
-// Token implements XML name spaces as described by
-// http://www.w3.org/TR/REC-xml-names/. Each of the
-// Name structures contained in the Token has the Space
-// set to the URL identifying its name space when known.
-// If Token encounters an unrecognized name space prefix,
-// it uses the prefix as the Space rather than report an error.
-func (d *Decoder) Token() (t Token, err error) {
- if d.stk != nil && d.stk.kind == stkEOF {
- err = io.EOF
- return
- }
- if d.nextToken != nil {
- t = d.nextToken
- d.nextToken = nil
- } else if t, err = d.rawToken(); err != nil {
- return
- }
-
- if !d.Strict {
- if t1, ok := d.autoClose(t); ok {
- d.nextToken = t
- t = t1
- }
- }
- switch t1 := t.(type) {
- case StartElement:
- // In XML name spaces, the translations listed in the
- // attributes apply to the element name and
- // to the other attribute names, so process
- // the translations first.
- for _, a := range t1.Attr {
- if a.Name.Space == "xmlns" {
- v, ok := d.ns[a.Name.Local]
- d.pushNs(a.Name.Local, v, ok)
- d.ns[a.Name.Local] = a.Value
- }
- if a.Name.Space == "" && a.Name.Local == "xmlns" {
- // Default space for untagged names
- v, ok := d.ns[""]
- d.pushNs("", v, ok)
- d.ns[""] = a.Value
- }
- }
-
- d.translate(&t1.Name, true)
- for i := range t1.Attr {
- d.translate(&t1.Attr[i].Name, false)
- }
- d.pushElement(t1.Name)
- t = t1
-
- case EndElement:
- d.translate(&t1.Name, true)
- if !d.popElement(&t1) {
- return nil, d.err
- }
- t = t1
- }
- return
-}
-
-const xmlURL = "http://www.w3.org/XML/1998/namespace"
-
-// Apply name space translation to name n.
-// The default name space (for Space=="")
-// applies only to element names, not to attribute names.
-func (d *Decoder) translate(n *Name, isElementName bool) {
- switch {
- case n.Space == "xmlns":
- return
- case n.Space == "" && !isElementName:
- return
- case n.Space == "xml":
- n.Space = xmlURL
- case n.Space == "" && n.Local == "xmlns":
- return
- }
- if v, ok := d.ns[n.Space]; ok {
- n.Space = v
- } else if n.Space == "" {
- n.Space = d.DefaultSpace
- }
-}
-
-func (d *Decoder) switchToReader(r io.Reader) {
- // Get efficient byte at a time reader.
- // Assume that if reader has its own
- // ReadByte, it's efficient enough.
- // Otherwise, use bufio.
- if rb, ok := r.(io.ByteReader); ok {
- d.r = rb
- } else {
- d.r = bufio.NewReader(r)
- }
-}
-
-// Parsing state - stack holds old name space translations
-// and the current set of open elements. The translations to pop when
-// ending a given tag are *below* it on the stack, which is
-// more work but forced on us by XML.
-type stack struct {
- next *stack
- kind int
- name Name
- ok bool
-}
-
-const (
- stkStart = iota
- stkNs
- stkEOF
-)
-
-func (d *Decoder) push(kind int) *stack {
- s := d.free
- if s != nil {
- d.free = s.next
- } else {
- s = new(stack)
- }
- s.next = d.stk
- s.kind = kind
- d.stk = s
- return s
-}
-
-func (d *Decoder) pop() *stack {
- s := d.stk
- if s != nil {
- d.stk = s.next
- s.next = d.free
- d.free = s
- }
- return s
-}
-
-// Record that after the current element is finished
-// (that element is already pushed on the stack)
-// Token should return EOF until popEOF is called.
-func (d *Decoder) pushEOF() {
- // Walk down stack to find Start.
- // It might not be the top, because there might be stkNs
- // entries above it.
- start := d.stk
- for start.kind != stkStart {
- start = start.next
- }
- // The stkNs entries below a start are associated with that
- // element too; skip over them.
- for start.next != nil && start.next.kind == stkNs {
- start = start.next
- }
- s := d.free
- if s != nil {
- d.free = s.next
- } else {
- s = new(stack)
- }
- s.kind = stkEOF
- s.next = start.next
- start.next = s
-}
-
-// Undo a pushEOF.
-// The element must have been finished, so the EOF should be at the top of the stack.
-func (d *Decoder) popEOF() bool {
- if d.stk == nil || d.stk.kind != stkEOF {
- return false
- }
- d.pop()
- return true
-}
-
-// Record that we are starting an element with the given name.
-func (d *Decoder) pushElement(name Name) {
- s := d.push(stkStart)
- s.name = name
-}
-
-// Record that we are changing the value of ns[local].
-// The old value is url, ok.
-func (d *Decoder) pushNs(local string, url string, ok bool) {
- s := d.push(stkNs)
- s.name.Local = local
- s.name.Space = url
- s.ok = ok
-}
-
-// Creates a SyntaxError with the current line number.
-func (d *Decoder) syntaxError(msg string) error {
- return &SyntaxError{Msg: msg, Line: d.line}
-}
-
-// Record that we are ending an element with the given name.
-// The name must match the record at the top of the stack,
-// which must be a pushElement record.
-// After popping the element, apply any undo records from
-// the stack to restore the name translations that existed
-// before we saw this element.
-func (d *Decoder) popElement(t *EndElement) bool {
- s := d.pop()
- name := t.Name
- switch {
- case s == nil || s.kind != stkStart:
- d.err = d.syntaxError("unexpected end element </" + name.Local + ">")
- return false
- case s.name.Local != name.Local:
- if !d.Strict {
- d.needClose = true
- d.toClose = t.Name
- t.Name = s.name
- return true
- }
- d.err = d.syntaxError("element <" + s.name.Local + "> closed by </" + name.Local + ">")
- return false
- case s.name.Space != name.Space:
- d.err = d.syntaxError("element <" + s.name.Local + "> in space " + s.name.Space +
- "closed by </" + name.Local + "> in space " + name.Space)
- return false
- }
-
- // Pop stack until a Start or EOF is on the top, undoing the
- // translations that were associated with the element we just closed.
- for d.stk != nil && d.stk.kind != stkStart && d.stk.kind != stkEOF {
- s := d.pop()
- if s.ok {
- d.ns[s.name.Local] = s.name.Space
- } else {
- delete(d.ns, s.name.Local)
- }
- }
-
- return true
-}
-
-// If the top element on the stack is autoclosing and
-// t is not the end tag, invent the end tag.
-func (d *Decoder) autoClose(t Token) (Token, bool) {
- if d.stk == nil || d.stk.kind != stkStart {
- return nil, false
- }
- name := strings.ToLower(d.stk.name.Local)
- for _, s := range d.AutoClose {
- if strings.ToLower(s) == name {
- // This one should be auto closed if t doesn't close it.
- et, ok := t.(EndElement)
- if !ok || et.Name.Local != name {
- return EndElement{d.stk.name}, true
- }
- break
- }
- }
- return nil, false
-}
-
-var errRawToken = errors.New("xml: cannot use RawToken from UnmarshalXML method")
-
-// RawToken is like Token but does not verify that
-// start and end elements match and does not translate
-// name space prefixes to their corresponding URLs.
-func (d *Decoder) RawToken() (Token, error) {
- if d.unmarshalDepth > 0 {
- return nil, errRawToken
- }
- return d.rawToken()
-}
-
-func (d *Decoder) rawToken() (Token, error) {
- if d.err != nil {
- return nil, d.err
- }
- if d.needClose {
- // The last element we read was self-closing and
- // we returned just the StartElement half.
- // Return the EndElement half now.
- d.needClose = false
- return EndElement{d.toClose}, nil
- }
-
- b, ok := d.getc()
- if !ok {
- return nil, d.err
- }
-
- if b != '<' {
- // Text section.
- d.ungetc(b)
- data := d.text(-1, false)
- if data == nil {
- return nil, d.err
- }
- return CharData(data), nil
- }
-
- if b, ok = d.mustgetc(); !ok {
- return nil, d.err
- }
- switch b {
- case '/':
- // </: End element
- var name Name
- if name, ok = d.nsname(); !ok {
- if d.err == nil {
- d.err = d.syntaxError("expected element name after </")
- }
- return nil, d.err
- }
- d.space()
- if b, ok = d.mustgetc(); !ok {
- return nil, d.err
- }
- if b != '>' {
- d.err = d.syntaxError("invalid characters between </" + name.Local + " and >")
- return nil, d.err
- }
- return EndElement{name}, nil
-
- case '?':
- // <?: Processing instruction.
- var target string
- if target, ok = d.name(); !ok {
- if d.err == nil {
- d.err = d.syntaxError("expected target name after <?")
- }
- return nil, d.err
- }
- d.space()
- d.buf.Reset()
- var b0 byte
- for {
- if b, ok = d.mustgetc(); !ok {
- return nil, d.err
- }
- d.buf.WriteByte(b)
- if b0 == '?' && b == '>' {
- break
- }
- b0 = b
- }
- data := d.buf.Bytes()
- data = data[0 : len(data)-2] // chop ?>
-
- if target == "xml" {
- content := string(data)
- ver := procInst("version", content)
- if ver != "" && ver != "1.0" {
- d.err = fmt.Errorf("xml: unsupported version %q; only version 1.0 is supported", ver)
- return nil, d.err
- }
- enc := procInst("encoding", content)
- if enc != "" && enc != "utf-8" && enc != "UTF-8" {
- if d.CharsetReader == nil {
- d.err = fmt.Errorf("xml: encoding %q declared but Decoder.CharsetReader is nil", enc)
- return nil, d.err
- }
- newr, err := d.CharsetReader(enc, d.r.(io.Reader))
- if err != nil {
- d.err = fmt.Errorf("xml: opening charset %q: %v", enc, err)
- return nil, d.err
- }
- if newr == nil {
- panic("CharsetReader returned a nil Reader for charset " + enc)
- }
- d.switchToReader(newr)
- }
- }
- return ProcInst{target, data}, nil
-
- case '!':
- // <!: Maybe comment, maybe CDATA.
- if b, ok = d.mustgetc(); !ok {
- return nil, d.err
- }
- switch b {
- case '-': // <!-
- // Probably <!-- for a comment.
- if b, ok = d.mustgetc(); !ok {
- return nil, d.err
- }
- if b != '-' {
- d.err = d.syntaxError("invalid sequence <!- not part of <!--")
- return nil, d.err
- }
- // Look for terminator.
- d.buf.Reset()
- var b0, b1 byte
- for {
- if b, ok = d.mustgetc(); !ok {
- return nil, d.err
- }
- d.buf.WriteByte(b)
- if b0 == '-' && b1 == '-' && b == '>' {
- break
- }
- b0, b1 = b1, b
- }
- data := d.buf.Bytes()
- data = data[0 : len(data)-3] // chop -->
- return Comment(data), nil
-
- case '[': // <![
- // Probably <![CDATA[.
- for i := 0; i < 6; i++ {
- if b, ok = d.mustgetc(); !ok {
- return nil, d.err
- }
- if b != "CDATA["[i] {
- d.err = d.syntaxError("invalid <![ sequence")
- return nil, d.err
- }
- }
- // Have <![CDATA[. Read text until ]]>.
- data := d.text(-1, true)
- if data == nil {
- return nil, d.err
- }
- return CharData(data), nil
- }
-
- // Probably a directive: <!DOCTYPE ...>, <!ENTITY ...>, etc.
- // We don't care, but accumulate for caller. Quoted angle
- // brackets do not count for nesting.
- d.buf.Reset()
- d.buf.WriteByte(b)
- inquote := uint8(0)
- depth := 0
- for {
- if b, ok = d.mustgetc(); !ok {
- return nil, d.err
- }
- if inquote == 0 && b == '>' && depth == 0 {
- break
- }
- HandleB:
- d.buf.WriteByte(b)
- switch {
- case b == inquote:
- inquote = 0
-
- case inquote != 0:
- // in quotes, no special action
-
- case b == '\'' || b == '"':
- inquote = b
-
- case b == '>' && inquote == 0:
- depth--
-
- case b == '<' && inquote == 0:
- // Look for <!-- to begin comment.
- s := "!--"
- for i := 0; i < len(s); i++ {
- if b, ok = d.mustgetc(); !ok {
- return nil, d.err
- }
- if b != s[i] {
- for j := 0; j < i; j++ {
- d.buf.WriteByte(s[j])
- }
- depth++
- goto HandleB
- }
- }
-
- // Remove < that was written above.
- d.buf.Truncate(d.buf.Len() - 1)
-
- // Look for terminator.
- var b0, b1 byte
- for {
- if b, ok = d.mustgetc(); !ok {
- return nil, d.err
- }
- if b0 == '-' && b1 == '-' && b == '>' {
- break
- }
- b0, b1 = b1, b
- }
- }
- }
- return Directive(d.buf.Bytes()), nil
- }
-
- // Must be an open element like <a href="foo">
- d.ungetc(b)
-
- var (
- name Name
- empty bool
- attr []Attr
- )
- if name, ok = d.nsname(); !ok {
- if d.err == nil {
- d.err = d.syntaxError("expected element name after <")
- }
- return nil, d.err
- }
-
- attr = []Attr{}
- for {
- d.space()
- if b, ok = d.mustgetc(); !ok {
- return nil, d.err
- }
- if b == '/' {
- empty = true
- if b, ok = d.mustgetc(); !ok {
- return nil, d.err
- }
- if b != '>' {
- d.err = d.syntaxError("expected /> in element")
- return nil, d.err
- }
- break
- }
- if b == '>' {
- break
- }
- d.ungetc(b)
-
- n := len(attr)
- if n >= cap(attr) {
- nCap := 2 * cap(attr)
- if nCap == 0 {
- nCap = 4
- }
- nattr := make([]Attr, n, nCap)
- copy(nattr, attr)
- attr = nattr
- }
- attr = attr[0 : n+1]
- a := &attr[n]
- if a.Name, ok = d.nsname(); !ok {
- if d.err == nil {
- d.err = d.syntaxError("expected attribute name in element")
- }
- return nil, d.err
- }
- d.space()
- if b, ok = d.mustgetc(); !ok {
- return nil, d.err
- }
- if b != '=' {
- if d.Strict {
- d.err = d.syntaxError("attribute name without = in element")
- return nil, d.err
- } else {
- d.ungetc(b)
- a.Value = a.Name.Local
- }
- } else {
- d.space()
- data := d.attrval()
- if data == nil {
- return nil, d.err
- }
- a.Value = string(data)
- }
- }
- if empty {
- d.needClose = true
- d.toClose = name
- }
- return StartElement{name, attr}, nil
-}
-
-func (d *Decoder) attrval() []byte {
- b, ok := d.mustgetc()
- if !ok {
- return nil
- }
- // Handle quoted attribute values
- if b == '"' || b == '\'' {
- return d.text(int(b), false)
- }
- // Handle unquoted attribute values for strict parsers
- if d.Strict {
- d.err = d.syntaxError("unquoted or missing attribute value in element")
- return nil
- }
- // Handle unquoted attribute values for unstrict parsers
- d.ungetc(b)
- d.buf.Reset()
- for {
- b, ok = d.mustgetc()
- if !ok {
- return nil
- }
- // http://www.w3.org/TR/REC-html40/intro/sgmltut.html#h-3.2.2
- if 'a' <= b && b <= 'z' || 'A' <= b && b <= 'Z' ||
- '0' <= b && b <= '9' || b == '_' || b == ':' || b == '-' {
- d.buf.WriteByte(b)
- } else {
- d.ungetc(b)
- break
- }
- }
- return d.buf.Bytes()
-}
-
-// Skip spaces if any
-func (d *Decoder) space() {
- for {
- b, ok := d.getc()
- if !ok {
- return
- }
- switch b {
- case ' ', '\r', '\n', '\t':
- default:
- d.ungetc(b)
- return
- }
- }
-}
-
-// Read a single byte.
-// If there is no byte to read, return ok==false
-// and leave the error in d.err.
-// Maintain line number.
-func (d *Decoder) getc() (b byte, ok bool) {
- if d.err != nil {
- return 0, false
- }
- if d.nextByte >= 0 {
- b = byte(d.nextByte)
- d.nextByte = -1
- } else {
- b, d.err = d.r.ReadByte()
- if d.err != nil {
- return 0, false
- }
- if d.saved != nil {
- d.saved.WriteByte(b)
- }
- }
- if b == '\n' {
- d.line++
- }
- d.offset++
- return b, true
-}
-
-// InputOffset returns the input stream byte offset of the current decoder position.
-// The offset gives the location of the end of the most recently returned token
-// and the beginning of the next token.
-func (d *Decoder) InputOffset() int64 {
- return d.offset
-}
-
-// Return saved offset.
-// If we did ungetc (nextByte >= 0), have to back up one.
-func (d *Decoder) savedOffset() int {
- n := d.saved.Len()
- if d.nextByte >= 0 {
- n--
- }
- return n
-}
-
-// Must read a single byte.
-// If there is no byte to read,
-// set d.err to SyntaxError("unexpected EOF")
-// and return ok==false
-func (d *Decoder) mustgetc() (b byte, ok bool) {
- if b, ok = d.getc(); !ok {
- if d.err == io.EOF {
- d.err = d.syntaxError("unexpected EOF")
- }
- }
- return
-}
-
-// Unread a single byte.
-func (d *Decoder) ungetc(b byte) {
- if b == '\n' {
- d.line--
- }
- d.nextByte = int(b)
- d.offset--
-}
-
-var entity = map[string]int{
- "lt": '<',
- "gt": '>',
- "amp": '&',
- "apos": '\'',
- "quot": '"',
-}
-
-// Read plain text section (XML calls it character data).
-// If quote >= 0, we are in a quoted string and need to find the matching quote.
-// If cdata == true, we are in a <![CDATA[ section and need to find ]]>.
-// On failure return nil and leave the error in d.err.
-func (d *Decoder) text(quote int, cdata bool) []byte {
- var b0, b1 byte
- var trunc int
- d.buf.Reset()
-Input:
- for {
- b, ok := d.getc()
- if !ok {
- if cdata {
- if d.err == io.EOF {
- d.err = d.syntaxError("unexpected EOF in CDATA section")
- }
- return nil
- }
- break Input
- }
-
- // <![CDATA[ section ends with ]]>.
- // It is an error for ]]> to appear in ordinary text.
- if b0 == ']' && b1 == ']' && b == '>' {
- if cdata {
- trunc = 2
- break Input
- }
- d.err = d.syntaxError("unescaped ]]> not in CDATA section")
- return nil
- }
-
- // Stop reading text if we see a <.
- if b == '<' && !cdata {
- if quote >= 0 {
- d.err = d.syntaxError("unescaped < inside quoted string")
- return nil
- }
- d.ungetc('<')
- break Input
- }
- if quote >= 0 && b == byte(quote) {
- break Input
- }
- if b == '&' && !cdata {
- // Read escaped character expression up to semicolon.
- // XML in all its glory allows a document to define and use
- // its own character names with <!ENTITY ...> directives.
- // Parsers are required to recognize lt, gt, amp, apos, and quot
- // even if they have not been declared.
- before := d.buf.Len()
- d.buf.WriteByte('&')
- var ok bool
- var text string
- var haveText bool
- if b, ok = d.mustgetc(); !ok {
- return nil
- }
- if b == '#' {
- d.buf.WriteByte(b)
- if b, ok = d.mustgetc(); !ok {
- return nil
- }
- base := 10
- if b == 'x' {
- base = 16
- d.buf.WriteByte(b)
- if b, ok = d.mustgetc(); !ok {
- return nil
- }
- }
- start := d.buf.Len()
- for '0' <= b && b <= '9' ||
- base == 16 && 'a' <= b && b <= 'f' ||
- base == 16 && 'A' <= b && b <= 'F' {
- d.buf.WriteByte(b)
- if b, ok = d.mustgetc(); !ok {
- return nil
- }
- }
- if b != ';' {
- d.ungetc(b)
- } else {
- s := string(d.buf.Bytes()[start:])
- d.buf.WriteByte(';')
- n, err := strconv.ParseUint(s, base, 64)
- if err == nil && n <= unicode.MaxRune {
- text = string(n)
- haveText = true
- }
- }
- } else {
- d.ungetc(b)
- if !d.readName() {
- if d.err != nil {
- return nil
- }
- ok = false
- }
- if b, ok = d.mustgetc(); !ok {
- return nil
- }
- if b != ';' {
- d.ungetc(b)
- } else {
- name := d.buf.Bytes()[before+1:]
- d.buf.WriteByte(';')
- if isName(name) {
- s := string(name)
- if r, ok := entity[s]; ok {
- text = string(r)
- haveText = true
- } else if d.Entity != nil {
- text, haveText = d.Entity[s]
- }
- }
- }
- }
-
- if haveText {
- d.buf.Truncate(before)
- d.buf.Write([]byte(text))
- b0, b1 = 0, 0
- continue Input
- }
- if !d.Strict {
- b0, b1 = 0, 0
- continue Input
- }
- ent := string(d.buf.Bytes()[before:])
- if ent[len(ent)-1] != ';' {
- ent += " (no semicolon)"
- }
- d.err = d.syntaxError("invalid character entity " + ent)
- return nil
- }
-
- // We must rewrite unescaped \r and \r\n into \n.
- if b == '\r' {
- d.buf.WriteByte('\n')
- } else if b1 == '\r' && b == '\n' {
- // Skip \r\n--we already wrote \n.
- } else {
- d.buf.WriteByte(b)
- }
-
- b0, b1 = b1, b
- }
- data := d.buf.Bytes()
- data = data[0 : len(data)-trunc]
-
- // Inspect each rune for being a disallowed character.
- buf := data
- for len(buf) > 0 {
- r, size := utf8.DecodeRune(buf)
- if r == utf8.RuneError && size == 1 {
- d.err = d.syntaxError("invalid UTF-8")
- return nil
- }
- buf = buf[size:]
- if !isInCharacterRange(r) {
- d.err = d.syntaxError(fmt.Sprintf("illegal character code %U", r))
- return nil
- }
- }
-
- return data
-}
-
-// Decide whether the given rune is in the XML Character Range, per
-// the Char production of http://www.xml.com/axml/testaxml.htm,
-// Section 2.2 Characters.
-func isInCharacterRange(r rune) (inrange bool) {
- return r == 0x09 ||
- r == 0x0A ||
- r == 0x0D ||
- r >= 0x20 && r <= 0xDF77 ||
- r >= 0xE000 && r <= 0xFFFD ||
- r >= 0x10000 && r <= 0x10FFFF
-}
-
-// Get name space name: name with a : stuck in the middle.
-// The part before the : is the name space identifier.
-func (d *Decoder) nsname() (name Name, ok bool) {
- s, ok := d.name()
- if !ok {
- return
- }
- i := strings.Index(s, ":")
- if i < 0 {
- name.Local = s
- } else {
- name.Space = s[0:i]
- name.Local = s[i+1:]
- }
- return name, true
-}
-
-// Get name: /first(first|second)*/
-// Do not set d.err if the name is missing (unless unexpected EOF is received):
-// let the caller provide better context.
-func (d *Decoder) name() (s string, ok bool) {
- d.buf.Reset()
- if !d.readName() {
- return "", false
- }
-
- // Now we check the characters.
- b := d.buf.Bytes()
- if !isName(b) {
- d.err = d.syntaxError("invalid XML name: " + string(b))
- return "", false
- }
- return string(b), true
-}
-
-// Read a name and append its bytes to d.buf.
-// The name is delimited by any single-byte character not valid in names.
-// All multi-byte characters are accepted; the caller must check their validity.
-func (d *Decoder) readName() (ok bool) {
- var b byte
- if b, ok = d.mustgetc(); !ok {
- return
- }
- if b < utf8.RuneSelf && !isNameByte(b) {
- d.ungetc(b)
- return false
- }
- d.buf.WriteByte(b)
-
- for {
- if b, ok = d.mustgetc(); !ok {
- return
- }
- if b < utf8.RuneSelf && !isNameByte(b) {
- d.ungetc(b)
- break
- }
- d.buf.WriteByte(b)
- }
- return true
-}
-
-func isNameByte(c byte) bool {
- return 'A' <= c && c <= 'Z' ||
- 'a' <= c && c <= 'z' ||
- '0' <= c && c <= '9' ||
- c == '_' || c == ':' || c == '.' || c == '-'
-}
-
-func isName(s []byte) bool {
- if len(s) == 0 {
- return false
- }
- c, n := utf8.DecodeRune(s)
- if c == utf8.RuneError && n == 1 {
- return false
- }
- if !unicode.Is(first, c) {
- return false
- }
- for n < len(s) {
- s = s[n:]
- c, n = utf8.DecodeRune(s)
- if c == utf8.RuneError && n == 1 {
- return false
- }
- if !unicode.Is(first, c) && !unicode.Is(second, c) {
- return false
- }
- }
- return true
-}
-
-func isNameString(s string) bool {
- if len(s) == 0 {
- return false
- }
- c, n := utf8.DecodeRuneInString(s)
- if c == utf8.RuneError && n == 1 {
- return false
- }
- if !unicode.Is(first, c) {
- return false
- }
- for n < len(s) {
- s = s[n:]
- c, n = utf8.DecodeRuneInString(s)
- if c == utf8.RuneError && n == 1 {
- return false
- }
- if !unicode.Is(first, c) && !unicode.Is(second, c) {
- return false
- }
- }
- return true
-}
-
-// These tables were generated by cut and paste from Appendix B of
-// the XML spec at http://www.xml.com/axml/testaxml.htm
-// and then reformatting. First corresponds to (Letter | '_' | ':')
-// and second corresponds to NameChar.
-
-var first = &unicode.RangeTable{
- R16: []unicode.Range16{
- {0x003A, 0x003A, 1},
- {0x0041, 0x005A, 1},
- {0x005F, 0x005F, 1},
- {0x0061, 0x007A, 1},
- {0x00C0, 0x00D6, 1},
- {0x00D8, 0x00F6, 1},
- {0x00F8, 0x00FF, 1},
- {0x0100, 0x0131, 1},
- {0x0134, 0x013E, 1},
- {0x0141, 0x0148, 1},
- {0x014A, 0x017E, 1},
- {0x0180, 0x01C3, 1},
- {0x01CD, 0x01F0, 1},
- {0x01F4, 0x01F5, 1},
- {0x01FA, 0x0217, 1},
- {0x0250, 0x02A8, 1},
- {0x02BB, 0x02C1, 1},
- {0x0386, 0x0386, 1},
- {0x0388, 0x038A, 1},
- {0x038C, 0x038C, 1},
- {0x038E, 0x03A1, 1},
- {0x03A3, 0x03CE, 1},
- {0x03D0, 0x03D6, 1},
- {0x03DA, 0x03E0, 2},
- {0x03E2, 0x03F3, 1},
- {0x0401, 0x040C, 1},
- {0x040E, 0x044F, 1},
- {0x0451, 0x045C, 1},
- {0x045E, 0x0481, 1},
- {0x0490, 0x04C4, 1},
- {0x04C7, 0x04C8, 1},
- {0x04CB, 0x04CC, 1},
- {0x04D0, 0x04EB, 1},
- {0x04EE, 0x04F5, 1},
- {0x04F8, 0x04F9, 1},
- {0x0531, 0x0556, 1},
- {0x0559, 0x0559, 1},
- {0x0561, 0x0586, 1},
- {0x05D0, 0x05EA, 1},
- {0x05F0, 0x05F2, 1},
- {0x0621, 0x063A, 1},
- {0x0641, 0x064A, 1},
- {0x0671, 0x06B7, 1},
- {0x06BA, 0x06BE, 1},
- {0x06C0, 0x06CE, 1},
- {0x06D0, 0x06D3, 1},
- {0x06D5, 0x06D5, 1},
- {0x06E5, 0x06E6, 1},
- {0x0905, 0x0939, 1},
- {0x093D, 0x093D, 1},
- {0x0958, 0x0961, 1},
- {0x0985, 0x098C, 1},
- {0x098F, 0x0990, 1},
- {0x0993, 0x09A8, 1},
- {0x09AA, 0x09B0, 1},
- {0x09B2, 0x09B2, 1},
- {0x09B6, 0x09B9, 1},
- {0x09DC, 0x09DD, 1},
- {0x09DF, 0x09E1, 1},
- {0x09F0, 0x09F1, 1},
- {0x0A05, 0x0A0A, 1},
- {0x0A0F, 0x0A10, 1},
- {0x0A13, 0x0A28, 1},
- {0x0A2A, 0x0A30, 1},
- {0x0A32, 0x0A33, 1},
- {0x0A35, 0x0A36, 1},
- {0x0A38, 0x0A39, 1},
- {0x0A59, 0x0A5C, 1},
- {0x0A5E, 0x0A5E, 1},
- {0x0A72, 0x0A74, 1},
- {0x0A85, 0x0A8B, 1},
- {0x0A8D, 0x0A8D, 1},
- {0x0A8F, 0x0A91, 1},
- {0x0A93, 0x0AA8, 1},
- {0x0AAA, 0x0AB0, 1},
- {0x0AB2, 0x0AB3, 1},
- {0x0AB5, 0x0AB9, 1},
- {0x0ABD, 0x0AE0, 0x23},
- {0x0B05, 0x0B0C, 1},
- {0x0B0F, 0x0B10, 1},
- {0x0B13, 0x0B28, 1},
- {0x0B2A, 0x0B30, 1},
- {0x0B32, 0x0B33, 1},
- {0x0B36, 0x0B39, 1},
- {0x0B3D, 0x0B3D, 1},
- {0x0B5C, 0x0B5D, 1},
- {0x0B5F, 0x0B61, 1},
- {0x0B85, 0x0B8A, 1},
- {0x0B8E, 0x0B90, 1},
- {0x0B92, 0x0B95, 1},
- {0x0B99, 0x0B9A, 1},
- {0x0B9C, 0x0B9C, 1},
- {0x0B9E, 0x0B9F, 1},
- {0x0BA3, 0x0BA4, 1},
- {0x0BA8, 0x0BAA, 1},
- {0x0BAE, 0x0BB5, 1},
- {0x0BB7, 0x0BB9, 1},
- {0x0C05, 0x0C0C, 1},
- {0x0C0E, 0x0C10, 1},
- {0x0C12, 0x0C28, 1},
- {0x0C2A, 0x0C33, 1},
- {0x0C35, 0x0C39, 1},
- {0x0C60, 0x0C61, 1},
- {0x0C85, 0x0C8C, 1},
- {0x0C8E, 0x0C90, 1},
- {0x0C92, 0x0CA8, 1},
- {0x0CAA, 0x0CB3, 1},
- {0x0CB5, 0x0CB9, 1},
- {0x0CDE, 0x0CDE, 1},
- {0x0CE0, 0x0CE1, 1},
- {0x0D05, 0x0D0C, 1},
- {0x0D0E, 0x0D10, 1},
- {0x0D12, 0x0D28, 1},
- {0x0D2A, 0x0D39, 1},
- {0x0D60, 0x0D61, 1},
- {0x0E01, 0x0E2E, 1},
- {0x0E30, 0x0E30, 1},
- {0x0E32, 0x0E33, 1},
- {0x0E40, 0x0E45, 1},
- {0x0E81, 0x0E82, 1},
- {0x0E84, 0x0E84, 1},
- {0x0E87, 0x0E88, 1},
- {0x0E8A, 0x0E8D, 3},
- {0x0E94, 0x0E97, 1},
- {0x0E99, 0x0E9F, 1},
- {0x0EA1, 0x0EA3, 1},
- {0x0EA5, 0x0EA7, 2},
- {0x0EAA, 0x0EAB, 1},
- {0x0EAD, 0x0EAE, 1},
- {0x0EB0, 0x0EB0, 1},
- {0x0EB2, 0x0EB3, 1},
- {0x0EBD, 0x0EBD, 1},
- {0x0EC0, 0x0EC4, 1},
- {0x0F40, 0x0F47, 1},
- {0x0F49, 0x0F69, 1},
- {0x10A0, 0x10C5, 1},
- {0x10D0, 0x10F6, 1},
- {0x1100, 0x1100, 1},
- {0x1102, 0x1103, 1},
- {0x1105, 0x1107, 1},
- {0x1109, 0x1109, 1},
- {0x110B, 0x110C, 1},
- {0x110E, 0x1112, 1},
- {0x113C, 0x1140, 2},
- {0x114C, 0x1150, 2},
- {0x1154, 0x1155, 1},
- {0x1159, 0x1159, 1},
- {0x115F, 0x1161, 1},
- {0x1163, 0x1169, 2},
- {0x116D, 0x116E, 1},
- {0x1172, 0x1173, 1},
- {0x1175, 0x119E, 0x119E - 0x1175},
- {0x11A8, 0x11AB, 0x11AB - 0x11A8},
- {0x11AE, 0x11AF, 1},
- {0x11B7, 0x11B8, 1},
- {0x11BA, 0x11BA, 1},
- {0x11BC, 0x11C2, 1},
- {0x11EB, 0x11F0, 0x11F0 - 0x11EB},
- {0x11F9, 0x11F9, 1},
- {0x1E00, 0x1E9B, 1},
- {0x1EA0, 0x1EF9, 1},
- {0x1F00, 0x1F15, 1},
- {0x1F18, 0x1F1D, 1},
- {0x1F20, 0x1F45, 1},
- {0x1F48, 0x1F4D, 1},
- {0x1F50, 0x1F57, 1},
- {0x1F59, 0x1F5B, 0x1F5B - 0x1F59},
- {0x1F5D, 0x1F5D, 1},
- {0x1F5F, 0x1F7D, 1},
- {0x1F80, 0x1FB4, 1},
- {0x1FB6, 0x1FBC, 1},
- {0x1FBE, 0x1FBE, 1},
- {0x1FC2, 0x1FC4, 1},
- {0x1FC6, 0x1FCC, 1},
- {0x1FD0, 0x1FD3, 1},
- {0x1FD6, 0x1FDB, 1},
- {0x1FE0, 0x1FEC, 1},
- {0x1FF2, 0x1FF4, 1},
- {0x1FF6, 0x1FFC, 1},
- {0x2126, 0x2126, 1},
- {0x212A, 0x212B, 1},
- {0x212E, 0x212E, 1},
- {0x2180, 0x2182, 1},
- {0x3007, 0x3007, 1},
- {0x3021, 0x3029, 1},
- {0x3041, 0x3094, 1},
- {0x30A1, 0x30FA, 1},
- {0x3105, 0x312C, 1},
- {0x4E00, 0x9FA5, 1},
- {0xAC00, 0xD7A3, 1},
- },
-}
-
-var second = &unicode.RangeTable{
- R16: []unicode.Range16{
- {0x002D, 0x002E, 1},
- {0x0030, 0x0039, 1},
- {0x00B7, 0x00B7, 1},
- {0x02D0, 0x02D1, 1},
- {0x0300, 0x0345, 1},
- {0x0360, 0x0361, 1},
- {0x0387, 0x0387, 1},
- {0x0483, 0x0486, 1},
- {0x0591, 0x05A1, 1},
- {0x05A3, 0x05B9, 1},
- {0x05BB, 0x05BD, 1},
- {0x05BF, 0x05BF, 1},
- {0x05C1, 0x05C2, 1},
- {0x05C4, 0x0640, 0x0640 - 0x05C4},
- {0x064B, 0x0652, 1},
- {0x0660, 0x0669, 1},
- {0x0670, 0x0670, 1},
- {0x06D6, 0x06DC, 1},
- {0x06DD, 0x06DF, 1},
- {0x06E0, 0x06E4, 1},
- {0x06E7, 0x06E8, 1},
- {0x06EA, 0x06ED, 1},
- {0x06F0, 0x06F9, 1},
- {0x0901, 0x0903, 1},
- {0x093C, 0x093C, 1},
- {0x093E, 0x094C, 1},
- {0x094D, 0x094D, 1},
- {0x0951, 0x0954, 1},
- {0x0962, 0x0963, 1},
- {0x0966, 0x096F, 1},
- {0x0981, 0x0983, 1},
- {0x09BC, 0x09BC, 1},
- {0x09BE, 0x09BF, 1},
- {0x09C0, 0x09C4, 1},
- {0x09C7, 0x09C8, 1},
- {0x09CB, 0x09CD, 1},
- {0x09D7, 0x09D7, 1},
- {0x09E2, 0x09E3, 1},
- {0x09E6, 0x09EF, 1},
- {0x0A02, 0x0A3C, 0x3A},
- {0x0A3E, 0x0A3F, 1},
- {0x0A40, 0x0A42, 1},
- {0x0A47, 0x0A48, 1},
- {0x0A4B, 0x0A4D, 1},
- {0x0A66, 0x0A6F, 1},
- {0x0A70, 0x0A71, 1},
- {0x0A81, 0x0A83, 1},
- {0x0ABC, 0x0ABC, 1},
- {0x0ABE, 0x0AC5, 1},
- {0x0AC7, 0x0AC9, 1},
- {0x0ACB, 0x0ACD, 1},
- {0x0AE6, 0x0AEF, 1},
- {0x0B01, 0x0B03, 1},
- {0x0B3C, 0x0B3C, 1},
- {0x0B3E, 0x0B43, 1},
- {0x0B47, 0x0B48, 1},
- {0x0B4B, 0x0B4D, 1},
- {0x0B56, 0x0B57, 1},
- {0x0B66, 0x0B6F, 1},
- {0x0B82, 0x0B83, 1},
- {0x0BBE, 0x0BC2, 1},
- {0x0BC6, 0x0BC8, 1},
- {0x0BCA, 0x0BCD, 1},
- {0x0BD7, 0x0BD7, 1},
- {0x0BE7, 0x0BEF, 1},
- {0x0C01, 0x0C03, 1},
- {0x0C3E, 0x0C44, 1},
- {0x0C46, 0x0C48, 1},
- {0x0C4A, 0x0C4D, 1},
- {0x0C55, 0x0C56, 1},
- {0x0C66, 0x0C6F, 1},
- {0x0C82, 0x0C83, 1},
- {0x0CBE, 0x0CC4, 1},
- {0x0CC6, 0x0CC8, 1},
- {0x0CCA, 0x0CCD, 1},
- {0x0CD5, 0x0CD6, 1},
- {0x0CE6, 0x0CEF, 1},
- {0x0D02, 0x0D03, 1},
- {0x0D3E, 0x0D43, 1},
- {0x0D46, 0x0D48, 1},
- {0x0D4A, 0x0D4D, 1},
- {0x0D57, 0x0D57, 1},
- {0x0D66, 0x0D6F, 1},
- {0x0E31, 0x0E31, 1},
- {0x0E34, 0x0E3A, 1},
- {0x0E46, 0x0E46, 1},
- {0x0E47, 0x0E4E, 1},
- {0x0E50, 0x0E59, 1},
- {0x0EB1, 0x0EB1, 1},
- {0x0EB4, 0x0EB9, 1},
- {0x0EBB, 0x0EBC, 1},
- {0x0EC6, 0x0EC6, 1},
- {0x0EC8, 0x0ECD, 1},
- {0x0ED0, 0x0ED9, 1},
- {0x0F18, 0x0F19, 1},
- {0x0F20, 0x0F29, 1},
- {0x0F35, 0x0F39, 2},
- {0x0F3E, 0x0F3F, 1},
- {0x0F71, 0x0F84, 1},
- {0x0F86, 0x0F8B, 1},
- {0x0F90, 0x0F95, 1},
- {0x0F97, 0x0F97, 1},
- {0x0F99, 0x0FAD, 1},
- {0x0FB1, 0x0FB7, 1},
- {0x0FB9, 0x0FB9, 1},
- {0x20D0, 0x20DC, 1},
- {0x20E1, 0x3005, 0x3005 - 0x20E1},
- {0x302A, 0x302F, 1},
- {0x3031, 0x3035, 1},
- {0x3099, 0x309A, 1},
- {0x309D, 0x309E, 1},
- {0x30FC, 0x30FE, 1},
- },
-}
-
-// HTMLEntity is an entity map containing translations for the
-// standard HTML entity characters.
-var HTMLEntity = htmlEntity
-
-var htmlEntity = map[string]string{
- /*
- hget http://www.w3.org/TR/html4/sgml/entities.html |
- ssam '
- ,y /\&gt;/ x/\&lt;(.|\n)+/ s/\n/ /g
- ,x v/^\&lt;!ENTITY/d
- ,s/\&lt;!ENTITY ([^ ]+) .*U\+([0-9A-F][0-9A-F][0-9A-F][0-9A-F]) .+/ "\1": "\\u\2",/g
- '
- */
- "nbsp": "\u00A0",
- "iexcl": "\u00A1",
- "cent": "\u00A2",
- "pound": "\u00A3",
- "curren": "\u00A4",
- "yen": "\u00A5",
- "brvbar": "\u00A6",
- "sect": "\u00A7",
- "uml": "\u00A8",
- "copy": "\u00A9",
- "ordf": "\u00AA",
- "laquo": "\u00AB",
- "not": "\u00AC",
- "shy": "\u00AD",
- "reg": "\u00AE",
- "macr": "\u00AF",
- "deg": "\u00B0",
- "plusmn": "\u00B1",
- "sup2": "\u00B2",
- "sup3": "\u00B3",
- "acute": "\u00B4",
- "micro": "\u00B5",
- "para": "\u00B6",
- "middot": "\u00B7",
- "cedil": "\u00B8",
- "sup1": "\u00B9",
- "ordm": "\u00BA",
- "raquo": "\u00BB",
- "frac14": "\u00BC",
- "frac12": "\u00BD",
- "frac34": "\u00BE",
- "iquest": "\u00BF",
- "Agrave": "\u00C0",
- "Aacute": "\u00C1",
- "Acirc": "\u00C2",
- "Atilde": "\u00C3",
- "Auml": "\u00C4",
- "Aring": "\u00C5",
- "AElig": "\u00C6",
- "Ccedil": "\u00C7",
- "Egrave": "\u00C8",
- "Eacute": "\u00C9",
- "Ecirc": "\u00CA",
- "Euml": "\u00CB",
- "Igrave": "\u00CC",
- "Iacute": "\u00CD",
- "Icirc": "\u00CE",
- "Iuml": "\u00CF",
- "ETH": "\u00D0",
- "Ntilde": "\u00D1",
- "Ograve": "\u00D2",
- "Oacute": "\u00D3",
- "Ocirc": "\u00D4",
- "Otilde": "\u00D5",
- "Ouml": "\u00D6",
- "times": "\u00D7",
- "Oslash": "\u00D8",
- "Ugrave": "\u00D9",
- "Uacute": "\u00DA",
- "Ucirc": "\u00DB",
- "Uuml": "\u00DC",
- "Yacute": "\u00DD",
- "THORN": "\u00DE",
- "szlig": "\u00DF",
- "agrave": "\u00E0",
- "aacute": "\u00E1",
- "acirc": "\u00E2",
- "atilde": "\u00E3",
- "auml": "\u00E4",
- "aring": "\u00E5",
- "aelig": "\u00E6",
- "ccedil": "\u00E7",
- "egrave": "\u00E8",
- "eacute": "\u00E9",
- "ecirc": "\u00EA",
- "euml": "\u00EB",
- "igrave": "\u00EC",
- "iacute": "\u00ED",
- "icirc": "\u00EE",
- "iuml": "\u00EF",
- "eth": "\u00F0",
- "ntilde": "\u00F1",
- "ograve": "\u00F2",
- "oacute": "\u00F3",
- "ocirc": "\u00F4",
- "otilde": "\u00F5",
- "ouml": "\u00F6",
- "divide": "\u00F7",
- "oslash": "\u00F8",
- "ugrave": "\u00F9",
- "uacute": "\u00FA",
- "ucirc": "\u00FB",
- "uuml": "\u00FC",
- "yacute": "\u00FD",
- "thorn": "\u00FE",
- "yuml": "\u00FF",
- "fnof": "\u0192",
- "Alpha": "\u0391",
- "Beta": "\u0392",
- "Gamma": "\u0393",
- "Delta": "\u0394",
- "Epsilon": "\u0395",
- "Zeta": "\u0396",
- "Eta": "\u0397",
- "Theta": "\u0398",
- "Iota": "\u0399",
- "Kappa": "\u039A",
- "Lambda": "\u039B",
- "Mu": "\u039C",
- "Nu": "\u039D",
- "Xi": "\u039E",
- "Omicron": "\u039F",
- "Pi": "\u03A0",
- "Rho": "\u03A1",
- "Sigma": "\u03A3",
- "Tau": "\u03A4",
- "Upsilon": "\u03A5",
- "Phi": "\u03A6",
- "Chi": "\u03A7",
- "Psi": "\u03A8",
- "Omega": "\u03A9",
- "alpha": "\u03B1",
- "beta": "\u03B2",
- "gamma": "\u03B3",
- "delta": "\u03B4",
- "epsilon": "\u03B5",
- "zeta": "\u03B6",
- "eta": "\u03B7",
- "theta": "\u03B8",
- "iota": "\u03B9",
- "kappa": "\u03BA",
- "lambda": "\u03BB",
- "mu": "\u03BC",
- "nu": "\u03BD",
- "xi": "\u03BE",
- "omicron": "\u03BF",
- "pi": "\u03C0",
- "rho": "\u03C1",
- "sigmaf": "\u03C2",
- "sigma": "\u03C3",
- "tau": "\u03C4",
- "upsilon": "\u03C5",
- "phi": "\u03C6",
- "chi": "\u03C7",
- "psi": "\u03C8",
- "omega": "\u03C9",
- "thetasym": "\u03D1",
- "upsih": "\u03D2",
- "piv": "\u03D6",
- "bull": "\u2022",
- "hellip": "\u2026",
- "prime": "\u2032",
- "Prime": "\u2033",
- "oline": "\u203E",
- "frasl": "\u2044",
- "weierp": "\u2118",
- "image": "\u2111",
- "real": "\u211C",
- "trade": "\u2122",
- "alefsym": "\u2135",
- "larr": "\u2190",
- "uarr": "\u2191",
- "rarr": "\u2192",
- "darr": "\u2193",
- "harr": "\u2194",
- "crarr": "\u21B5",
- "lArr": "\u21D0",
- "uArr": "\u21D1",
- "rArr": "\u21D2",
- "dArr": "\u21D3",
- "hArr": "\u21D4",
- "forall": "\u2200",
- "part": "\u2202",
- "exist": "\u2203",
- "empty": "\u2205",
- "nabla": "\u2207",
- "isin": "\u2208",
- "notin": "\u2209",
- "ni": "\u220B",
- "prod": "\u220F",
- "sum": "\u2211",
- "minus": "\u2212",
- "lowast": "\u2217",
- "radic": "\u221A",
- "prop": "\u221D",
- "infin": "\u221E",
- "ang": "\u2220",
- "and": "\u2227",
- "or": "\u2228",
- "cap": "\u2229",
- "cup": "\u222A",
- "int": "\u222B",
- "there4": "\u2234",
- "sim": "\u223C",
- "cong": "\u2245",
- "asymp": "\u2248",
- "ne": "\u2260",
- "equiv": "\u2261",
- "le": "\u2264",
- "ge": "\u2265",
- "sub": "\u2282",
- "sup": "\u2283",
- "nsub": "\u2284",
- "sube": "\u2286",
- "supe": "\u2287",
- "oplus": "\u2295",
- "otimes": "\u2297",
- "perp": "\u22A5",
- "sdot": "\u22C5",
- "lceil": "\u2308",
- "rceil": "\u2309",
- "lfloor": "\u230A",
- "rfloor": "\u230B",
- "lang": "\u2329",
- "rang": "\u232A",
- "loz": "\u25CA",
- "spades": "\u2660",
- "clubs": "\u2663",
- "hearts": "\u2665",
- "diams": "\u2666",
- "quot": "\u0022",
- "amp": "\u0026",
- "lt": "\u003C",
- "gt": "\u003E",
- "OElig": "\u0152",
- "oelig": "\u0153",
- "Scaron": "\u0160",
- "scaron": "\u0161",
- "Yuml": "\u0178",
- "circ": "\u02C6",
- "tilde": "\u02DC",
- "ensp": "\u2002",
- "emsp": "\u2003",
- "thinsp": "\u2009",
- "zwnj": "\u200C",
- "zwj": "\u200D",
- "lrm": "\u200E",
- "rlm": "\u200F",
- "ndash": "\u2013",
- "mdash": "\u2014",
- "lsquo": "\u2018",
- "rsquo": "\u2019",
- "sbquo": "\u201A",
- "ldquo": "\u201C",
- "rdquo": "\u201D",
- "bdquo": "\u201E",
- "dagger": "\u2020",
- "Dagger": "\u2021",
- "permil": "\u2030",
- "lsaquo": "\u2039",
- "rsaquo": "\u203A",
- "euro": "\u20AC",
-}
-
-// HTMLAutoClose is the set of HTML elements that
-// should be considered to close automatically.
-var HTMLAutoClose = htmlAutoClose
-
-var htmlAutoClose = []string{
- /*
- hget http://www.w3.org/TR/html4/loose.dtd |
- 9 sed -n 's/<!ELEMENT ([^ ]*) +- O EMPTY.+/ "\1",/p' | tr A-Z a-z
- */
- "basefont",
- "br",
- "area",
- "link",
- "img",
- "param",
- "hr",
- "input",
- "col",
- "frame",
- "isindex",
- "base",
- "meta",
-}
-
-var (
- esc_quot = []byte("&#34;") // shorter than "&quot;"
- esc_apos = []byte("&#39;") // shorter than "&apos;"
- esc_amp = []byte("&amp;")
- esc_lt = []byte("&lt;")
- esc_gt = []byte("&gt;")
- esc_tab = []byte("&#x9;")
- esc_nl = []byte("&#xA;")
- esc_cr = []byte("&#xD;")
- esc_fffd = []byte("\uFFFD") // Unicode replacement character
-)
-
-// EscapeText writes to w the properly escaped XML equivalent
-// of the plain text data s.
-func EscapeText(w io.Writer, s []byte) error {
- return escapeText(w, s, true)
-}
-
-// escapeText writes to w the properly escaped XML equivalent
-// of the plain text data s. If escapeNewline is true, newline
-// characters will be escaped.
-func escapeText(w io.Writer, s []byte, escapeNewline bool) error {
- var esc []byte
- last := 0
- for i := 0; i < len(s); {
- r, width := utf8.DecodeRune(s[i:])
- i += width
- switch r {
- case '"':
- esc = esc_quot
- case '\'':
- esc = esc_apos
- case '&':
- esc = esc_amp
- case '<':
- esc = esc_lt
- case '>':
- esc = esc_gt
- case '\t':
- esc = esc_tab
- case '\n':
- if !escapeNewline {
- continue
- }
- esc = esc_nl
- case '\r':
- esc = esc_cr
- default:
- if !isInCharacterRange(r) || (r == 0xFFFD && width == 1) {
- esc = esc_fffd
- break
- }
- continue
- }
- if _, err := w.Write(s[last : i-width]); err != nil {
- return err
- }
- if _, err := w.Write(esc); err != nil {
- return err
- }
- last = i
- }
- if _, err := w.Write(s[last:]); err != nil {
- return err
- }
- return nil
-}
-
-// EscapeString writes to p the properly escaped XML equivalent
-// of the plain text data s.
-func (p *printer) EscapeString(s string) {
- var esc []byte
- last := 0
- for i := 0; i < len(s); {
- r, width := utf8.DecodeRuneInString(s[i:])
- i += width
- switch r {
- case '"':
- esc = esc_quot
- case '\'':
- esc = esc_apos
- case '&':
- esc = esc_amp
- case '<':
- esc = esc_lt
- case '>':
- esc = esc_gt
- case '\t':
- esc = esc_tab
- case '\n':
- esc = esc_nl
- case '\r':
- esc = esc_cr
- default:
- if !isInCharacterRange(r) || (r == 0xFFFD && width == 1) {
- esc = esc_fffd
- break
- }
- continue
- }
- p.WriteString(s[last : i-width])
- p.Write(esc)
- last = i
- }
- p.WriteString(s[last:])
-}
-
-// Escape is like EscapeText but omits the error return value.
-// It is provided for backwards compatibility with Go 1.0.
-// Code targeting Go 1.1 or later should use EscapeText.
-func Escape(w io.Writer, s []byte) {
- EscapeText(w, s)
-}
-
-// procInst parses the `param="..."` or `param='...'`
-// value out of the provided string, returning "" if not found.
-func procInst(param, s string) string {
- // TODO: this parsing is somewhat lame and not exact.
- // It works for all actual cases, though.
- param = param + "="
- idx := strings.Index(s, param)
- if idx == -1 {
- return ""
- }
- v := s[idx+len(param):]
- if v == "" {
- return ""
- }
- if v[0] != '\'' && v[0] != '"' {
- return ""
- }
- idx = strings.IndexRune(v[1:], rune(v[0]))
- if idx == -1 {
- return ""
- }
- return v[1 : idx+1]
-}