| // 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" |
| "io" |
| "os" |
| "strconv" |
| "strings" |
| "unicode" |
| "utf8" |
| ) |
| |
| // A SyntaxError represents a syntax error in the XML input stream. |
| type SyntaxError struct { |
| Msg string |
| Line int |
| } |
| |
| func (e *SyntaxError) String() 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 Parser.Token, the Space identifier |
| // is given as a canonical URL, not the short prefix used |
| // in the document being parsed. |
| type Name struct { |
| Space, Local string |
| } |
| |
| // 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(e.Attr, attrs) |
| e.Attr = attrs |
| return e |
| } |
| |
| // 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| // in which XML escape sequences have been replaced by |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 Parser represents an XML parser reading a particular input stream. |
| // The parser assumes that its input is encoded in UTF-8. |
| type Parser 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: |
| // |
| // p.Strict = false; |
| // p.AutoClose = HTMLAutoClose; |
| // p.Entity = HTMLEntity |
| // |
| // creates a parser that can handle typical HTML. |
| 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 |
| |
| r io.ReadByter |
| buf bytes.Buffer |
| saved *bytes.Buffer |
| stk *stack |
| free *stack |
| needClose bool |
| toClose Name |
| nextToken Token |
| nextByte int |
| ns map[string]string |
| err os.Error |
| line int |
| tmp [32]byte |
| } |
| |
| // NewParser creates a new XML parser reading from r. |
| func NewParser(r io.Reader) *Parser { |
| p := &Parser{ |
| ns: make(map[string]string), |
| nextByte: -1, |
| line: 1, |
| Strict: true, |
| } |
| |
| // 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.ReadByter); ok { |
| p.r = rb |
| } else { |
| p.r = bufio.NewReader(r) |
| } |
| |
| return p |
| } |
| |
| // Token returns the next XML token in the input stream. |
| // At the end of the input stream, Token returns nil, os.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 (p *Parser) Token() (t Token, err os.Error) { |
| if p.nextToken != nil { |
| t = p.nextToken |
| p.nextToken = nil |
| } else if t, err = p.RawToken(); err != nil { |
| return |
| } |
| |
| if !p.Strict { |
| if t1, ok := p.autoClose(t); ok { |
| p.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 := p.ns[a.Name.Local] |
| p.pushNs(a.Name.Local, v, ok) |
| p.ns[a.Name.Local] = a.Value |
| } |
| if a.Name.Space == "" && a.Name.Local == "xmlns" { |
| // Default space for untagged names |
| v, ok := p.ns[""] |
| p.pushNs("", v, ok) |
| p.ns[""] = a.Value |
| } |
| } |
| |
| p.translate(&t1.Name, true) |
| for i := range t1.Attr { |
| p.translate(&t1.Attr[i].Name, false) |
| } |
| p.pushElement(t1.Name) |
| t = t1 |
| |
| case EndElement: |
| p.translate(&t1.Name, true) |
| if !p.popElement(&t1) { |
| return nil, p.err |
| } |
| t = t1 |
| } |
| return |
| } |
| |
| // Apply name space translation to name n. |
| // The default name space (for Space=="") |
| // applies only to element names, not to attribute names. |
| func (p *Parser) translate(n *Name, isElementName bool) { |
| switch { |
| case n.Space == "xmlns": |
| return |
| case n.Space == "" && !isElementName: |
| return |
| case n.Space == "" && n.Local == "xmlns": |
| return |
| } |
| if v, ok := p.ns[n.Space]; ok { |
| n.Space = v |
| } |
| } |
| |
| // 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 |
| ) |
| |
| func (p *Parser) push(kind int) *stack { |
| s := p.free |
| if s != nil { |
| p.free = s.next |
| } else { |
| s = new(stack) |
| } |
| s.next = p.stk |
| s.kind = kind |
| p.stk = s |
| return s |
| } |
| |
| func (p *Parser) pop() *stack { |
| s := p.stk |
| if s != nil { |
| p.stk = s.next |
| s.next = p.free |
| p.free = s |
| } |
| return s |
| } |
| |
| // Record that we are starting an element with the given name. |
| func (p *Parser) pushElement(name Name) { |
| s := p.push(stkStart) |
| s.name = name |
| } |
| |
| // Record that we are changing the value of ns[local]. |
| // The old value is url, ok. |
| func (p *Parser) pushNs(local string, url string, ok bool) { |
| s := p.push(stkNs) |
| s.name.Local = local |
| s.name.Space = url |
| s.ok = ok |
| } |
| |
| // Creates a SyntaxError with the current line number. |
| func (p *Parser) syntaxError(msg string) os.Error { |
| return &SyntaxError{Msg: msg, Line: p.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 (p *Parser) popElement(t *EndElement) bool { |
| s := p.pop() |
| name := t.Name |
| switch { |
| case s == nil || s.kind != stkStart: |
| p.err = p.syntaxError("unexpected end element </" + name.Local + ">") |
| return false |
| case s.name.Local != name.Local: |
| if !p.Strict { |
| p.needClose = true |
| p.toClose = t.Name |
| t.Name = s.name |
| return true |
| } |
| p.err = p.syntaxError("element <" + s.name.Local + "> closed by </" + name.Local + ">") |
| return false |
| case s.name.Space != name.Space: |
| p.err = p.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 is on the top, undoing the |
| // translations that were associated with the element we just closed. |
| for p.stk != nil && p.stk.kind != stkStart { |
| s := p.pop() |
| p.ns[s.name.Local] = s.name.Space, s.ok |
| } |
| |
| return true |
| } |
| |
| // If the top element on the stack is autoclosing and |
| // t is not the end tag, invent the end tag. |
| func (p *Parser) autoClose(t Token) (Token, bool) { |
| if p.stk == nil || p.stk.kind != stkStart { |
| return nil, false |
| } |
| name := strings.ToLower(p.stk.name.Local) |
| for _, s := range p.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{p.stk.name}, true |
| } |
| break |
| } |
| } |
| return nil, false |
| } |
| |
| |
| // 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 (p *Parser) RawToken() (Token, os.Error) { |
| if p.err != nil { |
| return nil, p.err |
| } |
| if p.needClose { |
| // The last element we read was self-closing and |
| // we returned just the StartElement half. |
| // Return the EndElement half now. |
| p.needClose = false |
| return EndElement{p.toClose}, nil |
| } |
| |
| b, ok := p.getc() |
| if !ok { |
| return nil, p.err |
| } |
| |
| if b != '<' { |
| // Text section. |
| p.ungetc(b) |
| data := p.text(-1, false) |
| if data == nil { |
| return nil, p.err |
| } |
| return CharData(data), nil |
| } |
| |
| if b, ok = p.mustgetc(); !ok { |
| return nil, p.err |
| } |
| switch b { |
| case '/': |
| // </: End element |
| var name Name |
| if name, ok = p.nsname(); !ok { |
| if p.err == nil { |
| p.err = p.syntaxError("expected element name after </") |
| } |
| return nil, p.err |
| } |
| p.space() |
| if b, ok = p.mustgetc(); !ok { |
| return nil, p.err |
| } |
| if b != '>' { |
| p.err = p.syntaxError("invalid characters between </" + name.Local + " and >") |
| return nil, p.err |
| } |
| return EndElement{name}, nil |
| |
| case '?': |
| // <?: Processing instruction. |
| // TODO(rsc): Should parse the <?xml declaration to make sure |
| // the version is 1.0 and the encoding is UTF-8. |
| var target string |
| if target, ok = p.name(); !ok { |
| if p.err == nil { |
| p.err = p.syntaxError("expected target name after <?") |
| } |
| return nil, p.err |
| } |
| p.space() |
| p.buf.Reset() |
| var b0 byte |
| for { |
| if b, ok = p.mustgetc(); !ok { |
| return nil, p.err |
| } |
| p.buf.WriteByte(b) |
| if b0 == '?' && b == '>' { |
| break |
| } |
| b0 = b |
| } |
| data := p.buf.Bytes() |
| data = data[0 : len(data)-2] // chop ?> |
| return ProcInst{target, data}, nil |
| |
| case '!': |
| // <!: Maybe comment, maybe CDATA. |
| if b, ok = p.mustgetc(); !ok { |
| return nil, p.err |
| } |
| switch b { |
| case '-': // <!- |
| // Probably <!-- for a comment. |
| if b, ok = p.mustgetc(); !ok { |
| return nil, p.err |
| } |
| if b != '-' { |
| p.err = p.syntaxError("invalid sequence <!- not part of <!--") |
| return nil, p.err |
| } |
| // Look for terminator. |
| p.buf.Reset() |
| var b0, b1 byte |
| for { |
| if b, ok = p.mustgetc(); !ok { |
| return nil, p.err |
| } |
| p.buf.WriteByte(b) |
| if b0 == '-' && b1 == '-' && b == '>' { |
| break |
| } |
| b0, b1 = b1, b |
| } |
| data := p.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 = p.mustgetc(); !ok { |
| return nil, p.err |
| } |
| if b != "CDATA["[i] { |
| p.err = p.syntaxError("invalid <![ sequence") |
| return nil, p.err |
| } |
| } |
| // Have <![CDATA[. Read text until ]]>. |
| data := p.text(-1, true) |
| if data == nil { |
| return nil, p.err |
| } |
| return CharData(data), nil |
| } |
| |
| // Probably a directive: <!DOCTYPE ...>, <!ENTITY ...>, etc. |
| // We don't care, but accumulate for caller. |
| p.buf.Reset() |
| p.buf.WriteByte(b) |
| for { |
| if b, ok = p.mustgetc(); !ok { |
| return nil, p.err |
| } |
| if b == '>' { |
| break |
| } |
| p.buf.WriteByte(b) |
| } |
| return Directive(p.buf.Bytes()), nil |
| } |
| |
| // Must be an open element like <a href="foo"> |
| p.ungetc(b) |
| |
| var ( |
| name Name |
| empty bool |
| attr []Attr |
| ) |
| if name, ok = p.nsname(); !ok { |
| if p.err == nil { |
| p.err = p.syntaxError("expected element name after <") |
| } |
| return nil, p.err |
| } |
| |
| attr = make([]Attr, 0, 4) |
| for { |
| p.space() |
| if b, ok = p.mustgetc(); !ok { |
| return nil, p.err |
| } |
| if b == '/' { |
| empty = true |
| if b, ok = p.mustgetc(); !ok { |
| return nil, p.err |
| } |
| if b != '>' { |
| p.err = p.syntaxError("expected /> in element") |
| return nil, p.err |
| } |
| break |
| } |
| if b == '>' { |
| break |
| } |
| p.ungetc(b) |
| |
| n := len(attr) |
| if n >= cap(attr) { |
| nattr := make([]Attr, n, 2*cap(attr)) |
| for i, a := range attr { |
| nattr[i] = a |
| } |
| attr = nattr |
| } |
| attr = attr[0 : n+1] |
| a := &attr[n] |
| if a.Name, ok = p.nsname(); !ok { |
| if p.err == nil { |
| p.err = p.syntaxError("expected attribute name in element") |
| } |
| return nil, p.err |
| } |
| p.space() |
| if b, ok = p.mustgetc(); !ok { |
| return nil, p.err |
| } |
| if b != '=' { |
| p.err = p.syntaxError("attribute name without = in element") |
| return nil, p.err |
| } |
| p.space() |
| data := p.attrval() |
| if data == nil { |
| return nil, p.err |
| } |
| a.Value = string(data) |
| } |
| |
| if empty { |
| p.needClose = true |
| p.toClose = name |
| } |
| return StartElement{name, attr}, nil |
| } |
| |
| func (p *Parser) attrval() []byte { |
| b, ok := p.mustgetc() |
| if !ok { |
| return nil |
| } |
| // Handle quoted attribute values |
| if b == '"' || b == '\'' { |
| return p.text(int(b), false) |
| } |
| // Handle unquoted attribute values for strict parsers |
| if p.Strict { |
| p.err = p.syntaxError("unquoted or missing attribute value in element") |
| return nil |
| } |
| // Handle unquoted attribute values for unstrict parsers |
| p.ungetc(b) |
| p.buf.Reset() |
| for { |
| b, ok = p.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 == '-' { |
| p.buf.WriteByte(b) |
| } else { |
| p.ungetc(b) |
| break |
| } |
| } |
| return p.buf.Bytes() |
| } |
| |
| // Skip spaces if any |
| func (p *Parser) space() { |
| for { |
| b, ok := p.getc() |
| if !ok { |
| return |
| } |
| switch b { |
| case ' ', '\r', '\n', '\t': |
| default: |
| p.ungetc(b) |
| return |
| } |
| } |
| } |
| |
| // Read a single byte. |
| // If there is no byte to read, return ok==false |
| // and leave the error in p.err. |
| // Maintain line number. |
| func (p *Parser) getc() (b byte, ok bool) { |
| if p.err != nil { |
| return 0, false |
| } |
| if p.nextByte >= 0 { |
| b = byte(p.nextByte) |
| p.nextByte = -1 |
| } else { |
| b, p.err = p.r.ReadByte() |
| if p.err != nil { |
| return 0, false |
| } |
| if p.saved != nil { |
| p.saved.WriteByte(b) |
| } |
| } |
| if b == '\n' { |
| p.line++ |
| } |
| return b, true |
| } |
| |
| // Return saved offset. |
| // If we did ungetc (nextByte >= 0), have to back up one. |
| func (p *Parser) savedOffset() int { |
| n := p.saved.Len() |
| if p.nextByte >= 0 { |
| n-- |
| } |
| return n |
| } |
| |
| // Must read a single byte. |
| // If there is no byte to read, |
| // set p.err to SyntaxError("unexpected EOF") |
| // and return ok==false |
| func (p *Parser) mustgetc() (b byte, ok bool) { |
| if b, ok = p.getc(); !ok { |
| if p.err == os.EOF { |
| p.err = p.syntaxError("unexpected EOF") |
| } |
| } |
| return |
| } |
| |
| // Unread a single byte. |
| func (p *Parser) ungetc(b byte) { |
| if b == '\n' { |
| p.line-- |
| } |
| p.nextByte = int(b) |
| } |
| |
| 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 p.err. |
| func (p *Parser) text(quote int, cdata bool) []byte { |
| var b0, b1 byte |
| var trunc int |
| p.buf.Reset() |
| Input: |
| for { |
| b, ok := p.getc() |
| if !ok { |
| if cdata { |
| if p.err == os.EOF { |
| p.err = p.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 |
| } |
| p.err = p.syntaxError("unescaped ]]> not in CDATA section") |
| return nil |
| } |
| |
| // Stop reading text if we see a <. |
| if b == '<' && !cdata { |
| if quote >= 0 { |
| p.err = p.syntaxError("unescaped < inside quoted string") |
| return nil |
| } |
| p.ungetc('<') |
| break Input |
| } |
| if quote >= 0 && b == byte(quote) { |
| break Input |
| } |
| if b == '&' { |
| // 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. That's all we allow. |
| var i int |
| CharLoop: |
| for i = 0; i < len(p.tmp); i++ { |
| var ok bool |
| p.tmp[i], ok = p.getc() |
| if !ok { |
| if p.err == os.EOF { |
| p.err = p.syntaxError("unexpected EOF") |
| } |
| return nil |
| } |
| c := p.tmp[i] |
| if c == ';' { |
| break |
| } |
| if 'a' <= c && c <= 'z' || |
| 'A' <= c && c <= 'Z' || |
| '0' <= c && c <= '9' || |
| c == '_' || c == '#' { |
| continue |
| } |
| p.ungetc(c) |
| break |
| } |
| s := string(p.tmp[0:i]) |
| if i >= len(p.tmp) { |
| if !p.Strict { |
| b0, b1 = 0, 0 |
| p.buf.WriteByte('&') |
| p.buf.Write(p.tmp[0:i]) |
| continue Input |
| } |
| p.err = p.syntaxError("character entity expression &" + s + "... too long") |
| return nil |
| } |
| var haveText bool |
| var text string |
| if i >= 2 && s[0] == '#' { |
| var n uint64 |
| var err os.Error |
| if i >= 3 && s[1] == 'x' { |
| n, err = strconv.Btoui64(s[2:], 16) |
| } else { |
| n, err = strconv.Btoui64(s[1:], 10) |
| } |
| if err == nil && n <= unicode.MaxRune { |
| text = string(n) |
| haveText = true |
| } |
| } else { |
| if r, ok := entity[s]; ok { |
| text = string(r) |
| haveText = true |
| } else if p.Entity != nil { |
| text, haveText = p.Entity[s] |
| } |
| } |
| if !haveText { |
| if !p.Strict { |
| b0, b1 = 0, 0 |
| p.buf.WriteByte('&') |
| p.buf.Write(p.tmp[0:i]) |
| continue Input |
| } |
| p.err = p.syntaxError("invalid character entity &" + s + ";") |
| return nil |
| } |
| p.buf.Write([]byte(text)) |
| b0, b1 = 0, 0 |
| continue Input |
| } |
| p.buf.WriteByte(b) |
| b0, b1 = b1, b |
| } |
| data := p.buf.Bytes() |
| data = data[0 : len(data)-trunc] |
| |
| // Must rewrite \r and \r\n into \n. |
| w := 0 |
| for r := 0; r < len(data); r++ { |
| b := data[r] |
| if b == '\r' { |
| if r+1 < len(data) && data[r+1] == '\n' { |
| continue |
| } |
| b = '\n' |
| } |
| data[w] = b |
| w++ |
| } |
| return data[0:w] |
| } |
| |
| // Get name space name: name with a : stuck in the middle. |
| // The part before the : is the name space identifier. |
| func (p *Parser) nsname() (name Name, ok bool) { |
| s, ok := p.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 p.err if the name is missing (unless unexpected EOF is received): |
| // let the caller provide better context. |
| func (p *Parser) name() (s string, ok bool) { |
| var b byte |
| if b, ok = p.mustgetc(); !ok { |
| return |
| } |
| |
| // As a first approximation, we gather the bytes [A-Za-z_:.-\x80-\xFF]* |
| if b < utf8.RuneSelf && !isNameByte(b) { |
| p.ungetc(b) |
| return "", false |
| } |
| p.buf.Reset() |
| p.buf.WriteByte(b) |
| for { |
| if b, ok = p.mustgetc(); !ok { |
| return |
| } |
| if b < utf8.RuneSelf && !isNameByte(b) { |
| p.ungetc(b) |
| break |
| } |
| p.buf.WriteByte(b) |
| } |
| |
| // Then we check the characters. |
| s = p.buf.String() |
| for i, c := range s { |
| if !unicode.Is(first, c) && (i == 0 || !unicode.Is(second, c)) { |
| p.err = p.syntaxError("invalid XML name: " + s) |
| return "", false |
| } |
| } |
| return s, true |
| } |
| |
| func isNameByte(c byte) bool { |
| return 'A' <= c && c <= 'Z' || |
| 'a' <= c && c <= 'z' || |
| '0' <= c && c <= '9' || |
| c == '_' || c == ':' || c == '.' || c == '-' |
| } |
| |
| // 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.Range{ |
| unicode.Range{0x003A, 0x003A, 1}, |
| unicode.Range{0x0041, 0x005A, 1}, |
| unicode.Range{0x005F, 0x005F, 1}, |
| unicode.Range{0x0061, 0x007A, 1}, |
| unicode.Range{0x00C0, 0x00D6, 1}, |
| unicode.Range{0x00D8, 0x00F6, 1}, |
| unicode.Range{0x00F8, 0x00FF, 1}, |
| unicode.Range{0x0100, 0x0131, 1}, |
| unicode.Range{0x0134, 0x013E, 1}, |
| unicode.Range{0x0141, 0x0148, 1}, |
| unicode.Range{0x014A, 0x017E, 1}, |
| unicode.Range{0x0180, 0x01C3, 1}, |
| unicode.Range{0x01CD, 0x01F0, 1}, |
| unicode.Range{0x01F4, 0x01F5, 1}, |
| unicode.Range{0x01FA, 0x0217, 1}, |
| unicode.Range{0x0250, 0x02A8, 1}, |
| unicode.Range{0x02BB, 0x02C1, 1}, |
| unicode.Range{0x0386, 0x0386, 1}, |
| unicode.Range{0x0388, 0x038A, 1}, |
| unicode.Range{0x038C, 0x038C, 1}, |
| unicode.Range{0x038E, 0x03A1, 1}, |
| unicode.Range{0x03A3, 0x03CE, 1}, |
| unicode.Range{0x03D0, 0x03D6, 1}, |
| unicode.Range{0x03DA, 0x03E0, 2}, |
| unicode.Range{0x03E2, 0x03F3, 1}, |
| unicode.Range{0x0401, 0x040C, 1}, |
| unicode.Range{0x040E, 0x044F, 1}, |
| unicode.Range{0x0451, 0x045C, 1}, |
| unicode.Range{0x045E, 0x0481, 1}, |
| unicode.Range{0x0490, 0x04C4, 1}, |
| unicode.Range{0x04C7, 0x04C8, 1}, |
| unicode.Range{0x04CB, 0x04CC, 1}, |
| unicode.Range{0x04D0, 0x04EB, 1}, |
| unicode.Range{0x04EE, 0x04F5, 1}, |
| unicode.Range{0x04F8, 0x04F9, 1}, |
| unicode.Range{0x0531, 0x0556, 1}, |
| unicode.Range{0x0559, 0x0559, 1}, |
| unicode.Range{0x0561, 0x0586, 1}, |
| unicode.Range{0x05D0, 0x05EA, 1}, |
| unicode.Range{0x05F0, 0x05F2, 1}, |
| unicode.Range{0x0621, 0x063A, 1}, |
| unicode.Range{0x0641, 0x064A, 1}, |
| unicode.Range{0x0671, 0x06B7, 1}, |
| unicode.Range{0x06BA, 0x06BE, 1}, |
| unicode.Range{0x06C0, 0x06CE, 1}, |
| unicode.Range{0x06D0, 0x06D3, 1}, |
| unicode.Range{0x06D5, 0x06D5, 1}, |
| unicode.Range{0x06E5, 0x06E6, 1}, |
| unicode.Range{0x0905, 0x0939, 1}, |
| unicode.Range{0x093D, 0x093D, 1}, |
| unicode.Range{0x0958, 0x0961, 1}, |
| unicode.Range{0x0985, 0x098C, 1}, |
| unicode.Range{0x098F, 0x0990, 1}, |
| unicode.Range{0x0993, 0x09A8, 1}, |
| unicode.Range{0x09AA, 0x09B0, 1}, |
| unicode.Range{0x09B2, 0x09B2, 1}, |
| unicode.Range{0x09B6, 0x09B9, 1}, |
| unicode.Range{0x09DC, 0x09DD, 1}, |
| unicode.Range{0x09DF, 0x09E1, 1}, |
| unicode.Range{0x09F0, 0x09F1, 1}, |
| unicode.Range{0x0A05, 0x0A0A, 1}, |
| unicode.Range{0x0A0F, 0x0A10, 1}, |
| unicode.Range{0x0A13, 0x0A28, 1}, |
| unicode.Range{0x0A2A, 0x0A30, 1}, |
| unicode.Range{0x0A32, 0x0A33, 1}, |
| unicode.Range{0x0A35, 0x0A36, 1}, |
| unicode.Range{0x0A38, 0x0A39, 1}, |
| unicode.Range{0x0A59, 0x0A5C, 1}, |
| unicode.Range{0x0A5E, 0x0A5E, 1}, |
| unicode.Range{0x0A72, 0x0A74, 1}, |
| unicode.Range{0x0A85, 0x0A8B, 1}, |
| unicode.Range{0x0A8D, 0x0A8D, 1}, |
| unicode.Range{0x0A8F, 0x0A91, 1}, |
| unicode.Range{0x0A93, 0x0AA8, 1}, |
| unicode.Range{0x0AAA, 0x0AB0, 1}, |
| unicode.Range{0x0AB2, 0x0AB3, 1}, |
| unicode.Range{0x0AB5, 0x0AB9, 1}, |
| unicode.Range{0x0ABD, 0x0AE0, 0x23}, |
| unicode.Range{0x0B05, 0x0B0C, 1}, |
| unicode.Range{0x0B0F, 0x0B10, 1}, |
| unicode.Range{0x0B13, 0x0B28, 1}, |
| unicode.Range{0x0B2A, 0x0B30, 1}, |
| unicode.Range{0x0B32, 0x0B33, 1}, |
| unicode.Range{0x0B36, 0x0B39, 1}, |
| unicode.Range{0x0B3D, 0x0B3D, 1}, |
| unicode.Range{0x0B5C, 0x0B5D, 1}, |
| unicode.Range{0x0B5F, 0x0B61, 1}, |
| unicode.Range{0x0B85, 0x0B8A, 1}, |
| unicode.Range{0x0B8E, 0x0B90, 1}, |
| unicode.Range{0x0B92, 0x0B95, 1}, |
| unicode.Range{0x0B99, 0x0B9A, 1}, |
| unicode.Range{0x0B9C, 0x0B9C, 1}, |
| unicode.Range{0x0B9E, 0x0B9F, 1}, |
| unicode.Range{0x0BA3, 0x0BA4, 1}, |
| unicode.Range{0x0BA8, 0x0BAA, 1}, |
| unicode.Range{0x0BAE, 0x0BB5, 1}, |
| unicode.Range{0x0BB7, 0x0BB9, 1}, |
| unicode.Range{0x0C05, 0x0C0C, 1}, |
| unicode.Range{0x0C0E, 0x0C10, 1}, |
| unicode.Range{0x0C12, 0x0C28, 1}, |
| unicode.Range{0x0C2A, 0x0C33, 1}, |
| unicode.Range{0x0C35, 0x0C39, 1}, |
| unicode.Range{0x0C60, 0x0C61, 1}, |
| unicode.Range{0x0C85, 0x0C8C, 1}, |
| unicode.Range{0x0C8E, 0x0C90, 1}, |
| unicode.Range{0x0C92, 0x0CA8, 1}, |
| unicode.Range{0x0CAA, 0x0CB3, 1}, |
| unicode.Range{0x0CB5, 0x0CB9, 1}, |
| unicode.Range{0x0CDE, 0x0CDE, 1}, |
| unicode.Range{0x0CE0, 0x0CE1, 1}, |
| unicode.Range{0x0D05, 0x0D0C, 1}, |
| unicode.Range{0x0D0E, 0x0D10, 1}, |
| unicode.Range{0x0D12, 0x0D28, 1}, |
| unicode.Range{0x0D2A, 0x0D39, 1}, |
| unicode.Range{0x0D60, 0x0D61, 1}, |
| unicode.Range{0x0E01, 0x0E2E, 1}, |
| unicode.Range{0x0E30, 0x0E30, 1}, |
| unicode.Range{0x0E32, 0x0E33, 1}, |
| unicode.Range{0x0E40, 0x0E45, 1}, |
| unicode.Range{0x0E81, 0x0E82, 1}, |
| unicode.Range{0x0E84, 0x0E84, 1}, |
| unicode.Range{0x0E87, 0x0E88, 1}, |
| unicode.Range{0x0E8A, 0x0E8D, 3}, |
| unicode.Range{0x0E94, 0x0E97, 1}, |
| unicode.Range{0x0E99, 0x0E9F, 1}, |
| unicode.Range{0x0EA1, 0x0EA3, 1}, |
| unicode.Range{0x0EA5, 0x0EA7, 2}, |
| unicode.Range{0x0EAA, 0x0EAB, 1}, |
| unicode.Range{0x0EAD, 0x0EAE, 1}, |
| unicode.Range{0x0EB0, 0x0EB0, 1}, |
| unicode.Range{0x0EB2, 0x0EB3, 1}, |
| unicode.Range{0x0EBD, 0x0EBD, 1}, |
| unicode.Range{0x0EC0, 0x0EC4, 1}, |
| unicode.Range{0x0F40, 0x0F47, 1}, |
| unicode.Range{0x0F49, 0x0F69, 1}, |
| unicode.Range{0x10A0, 0x10C5, 1}, |
| unicode.Range{0x10D0, 0x10F6, 1}, |
| unicode.Range{0x1100, 0x1100, 1}, |
| unicode.Range{0x1102, 0x1103, 1}, |
| unicode.Range{0x1105, 0x1107, 1}, |
| unicode.Range{0x1109, 0x1109, 1}, |
| unicode.Range{0x110B, 0x110C, 1}, |
| unicode.Range{0x110E, 0x1112, 1}, |
| unicode.Range{0x113C, 0x1140, 2}, |
| unicode.Range{0x114C, 0x1150, 2}, |
| unicode.Range{0x1154, 0x1155, 1}, |
| unicode.Range{0x1159, 0x1159, 1}, |
| unicode.Range{0x115F, 0x1161, 1}, |
| unicode.Range{0x1163, 0x1169, 2}, |
| unicode.Range{0x116D, 0x116E, 1}, |
| unicode.Range{0x1172, 0x1173, 1}, |
| unicode.Range{0x1175, 0x119E, 0x119E - 0x1175}, |
| unicode.Range{0x11A8, 0x11AB, 0x11AB - 0x11A8}, |
| unicode.Range{0x11AE, 0x11AF, 1}, |
| unicode.Range{0x11B7, 0x11B8, 1}, |
| unicode.Range{0x11BA, 0x11BA, 1}, |
| unicode.Range{0x11BC, 0x11C2, 1}, |
| unicode.Range{0x11EB, 0x11F0, 0x11F0 - 0x11EB}, |
| unicode.Range{0x11F9, 0x11F9, 1}, |
| unicode.Range{0x1E00, 0x1E9B, 1}, |
| unicode.Range{0x1EA0, 0x1EF9, 1}, |
| unicode.Range{0x1F00, 0x1F15, 1}, |
| unicode.Range{0x1F18, 0x1F1D, 1}, |
| unicode.Range{0x1F20, 0x1F45, 1}, |
| unicode.Range{0x1F48, 0x1F4D, 1}, |
| unicode.Range{0x1F50, 0x1F57, 1}, |
| unicode.Range{0x1F59, 0x1F5B, 0x1F5B - 0x1F59}, |
| unicode.Range{0x1F5D, 0x1F5D, 1}, |
| unicode.Range{0x1F5F, 0x1F7D, 1}, |
| unicode.Range{0x1F80, 0x1FB4, 1}, |
| unicode.Range{0x1FB6, 0x1FBC, 1}, |
| unicode.Range{0x1FBE, 0x1FBE, 1}, |
| unicode.Range{0x1FC2, 0x1FC4, 1}, |
| unicode.Range{0x1FC6, 0x1FCC, 1}, |
| unicode.Range{0x1FD0, 0x1FD3, 1}, |
| unicode.Range{0x1FD6, 0x1FDB, 1}, |
| unicode.Range{0x1FE0, 0x1FEC, 1}, |
| unicode.Range{0x1FF2, 0x1FF4, 1}, |
| unicode.Range{0x1FF6, 0x1FFC, 1}, |
| unicode.Range{0x2126, 0x2126, 1}, |
| unicode.Range{0x212A, 0x212B, 1}, |
| unicode.Range{0x212E, 0x212E, 1}, |
| unicode.Range{0x2180, 0x2182, 1}, |
| unicode.Range{0x3007, 0x3007, 1}, |
| unicode.Range{0x3021, 0x3029, 1}, |
| unicode.Range{0x3041, 0x3094, 1}, |
| unicode.Range{0x30A1, 0x30FA, 1}, |
| unicode.Range{0x3105, 0x312C, 1}, |
| unicode.Range{0x4E00, 0x9FA5, 1}, |
| unicode.Range{0xAC00, 0xD7A3, 1}, |
| } |
| |
| var second = []unicode.Range{ |
| unicode.Range{0x002D, 0x002E, 1}, |
| unicode.Range{0x0030, 0x0039, 1}, |
| unicode.Range{0x00B7, 0x00B7, 1}, |
| unicode.Range{0x02D0, 0x02D1, 1}, |
| unicode.Range{0x0300, 0x0345, 1}, |
| unicode.Range{0x0360, 0x0361, 1}, |
| unicode.Range{0x0387, 0x0387, 1}, |
| unicode.Range{0x0483, 0x0486, 1}, |
| unicode.Range{0x0591, 0x05A1, 1}, |
| unicode.Range{0x05A3, 0x05B9, 1}, |
| unicode.Range{0x05BB, 0x05BD, 1}, |
| unicode.Range{0x05BF, 0x05BF, 1}, |
| unicode.Range{0x05C1, 0x05C2, 1}, |
| unicode.Range{0x05C4, 0x0640, 0x0640 - 0x05C4}, |
| unicode.Range{0x064B, 0x0652, 1}, |
| unicode.Range{0x0660, 0x0669, 1}, |
| unicode.Range{0x0670, 0x0670, 1}, |
| unicode.Range{0x06D6, 0x06DC, 1}, |
| unicode.Range{0x06DD, 0x06DF, 1}, |
| unicode.Range{0x06E0, 0x06E4, 1}, |
| unicode.Range{0x06E7, 0x06E8, 1}, |
| unicode.Range{0x06EA, 0x06ED, 1}, |
| unicode.Range{0x06F0, 0x06F9, 1}, |
| unicode.Range{0x0901, 0x0903, 1}, |
| unicode.Range{0x093C, 0x093C, 1}, |
| unicode.Range{0x093E, 0x094C, 1}, |
| unicode.Range{0x094D, 0x094D, 1}, |
| unicode.Range{0x0951, 0x0954, 1}, |
| unicode.Range{0x0962, 0x0963, 1}, |
| unicode.Range{0x0966, 0x096F, 1}, |
| unicode.Range{0x0981, 0x0983, 1}, |
| unicode.Range{0x09BC, 0x09BC, 1}, |
| unicode.Range{0x09BE, 0x09BF, 1}, |
| unicode.Range{0x09C0, 0x09C4, 1}, |
| unicode.Range{0x09C7, 0x09C8, 1}, |
| unicode.Range{0x09CB, 0x09CD, 1}, |
| unicode.Range{0x09D7, 0x09D7, 1}, |
| unicode.Range{0x09E2, 0x09E3, 1}, |
| unicode.Range{0x09E6, 0x09EF, 1}, |
| unicode.Range{0x0A02, 0x0A3C, 0x3A}, |
| unicode.Range{0x0A3E, 0x0A3F, 1}, |
| unicode.Range{0x0A40, 0x0A42, 1}, |
| unicode.Range{0x0A47, 0x0A48, 1}, |
| unicode.Range{0x0A4B, 0x0A4D, 1}, |
| unicode.Range{0x0A66, 0x0A6F, 1}, |
| unicode.Range{0x0A70, 0x0A71, 1}, |
| unicode.Range{0x0A81, 0x0A83, 1}, |
| unicode.Range{0x0ABC, 0x0ABC, 1}, |
| unicode.Range{0x0ABE, 0x0AC5, 1}, |
| unicode.Range{0x0AC7, 0x0AC9, 1}, |
| unicode.Range{0x0ACB, 0x0ACD, 1}, |
| unicode.Range{0x0AE6, 0x0AEF, 1}, |
| unicode.Range{0x0B01, 0x0B03, 1}, |
| unicode.Range{0x0B3C, 0x0B3C, 1}, |
| unicode.Range{0x0B3E, 0x0B43, 1}, |
| unicode.Range{0x0B47, 0x0B48, 1}, |
| unicode.Range{0x0B4B, 0x0B4D, 1}, |
| unicode.Range{0x0B56, 0x0B57, 1}, |
| unicode.Range{0x0B66, 0x0B6F, 1}, |
| unicode.Range{0x0B82, 0x0B83, 1}, |
| unicode.Range{0x0BBE, 0x0BC2, 1}, |
| unicode.Range{0x0BC6, 0x0BC8, 1}, |
| unicode.Range{0x0BCA, 0x0BCD, 1}, |
| unicode.Range{0x0BD7, 0x0BD7, 1}, |
| unicode.Range{0x0BE7, 0x0BEF, 1}, |
| unicode.Range{0x0C01, 0x0C03, 1}, |
| unicode.Range{0x0C3E, 0x0C44, 1}, |
| unicode.Range{0x0C46, 0x0C48, 1}, |
| unicode.Range{0x0C4A, 0x0C4D, 1}, |
| unicode.Range{0x0C55, 0x0C56, 1}, |
| unicode.Range{0x0C66, 0x0C6F, 1}, |
| unicode.Range{0x0C82, 0x0C83, 1}, |
| unicode.Range{0x0CBE, 0x0CC4, 1}, |
| unicode.Range{0x0CC6, 0x0CC8, 1}, |
| unicode.Range{0x0CCA, 0x0CCD, 1}, |
| unicode.Range{0x0CD5, 0x0CD6, 1}, |
| unicode.Range{0x0CE6, 0x0CEF, 1}, |
| unicode.Range{0x0D02, 0x0D03, 1}, |
| unicode.Range{0x0D3E, 0x0D43, 1}, |
| unicode.Range{0x0D46, 0x0D48, 1}, |
| unicode.Range{0x0D4A, 0x0D4D, 1}, |
| unicode.Range{0x0D57, 0x0D57, 1}, |
| unicode.Range{0x0D66, 0x0D6F, 1}, |
| unicode.Range{0x0E31, 0x0E31, 1}, |
| unicode.Range{0x0E34, 0x0E3A, 1}, |
| unicode.Range{0x0E46, 0x0E46, 1}, |
| unicode.Range{0x0E47, 0x0E4E, 1}, |
| unicode.Range{0x0E50, 0x0E59, 1}, |
| unicode.Range{0x0EB1, 0x0EB1, 1}, |
| unicode.Range{0x0EB4, 0x0EB9, 1}, |
| unicode.Range{0x0EBB, 0x0EBC, 1}, |
| unicode.Range{0x0EC6, 0x0EC6, 1}, |
| unicode.Range{0x0EC8, 0x0ECD, 1}, |
| unicode.Range{0x0ED0, 0x0ED9, 1}, |
| unicode.Range{0x0F18, 0x0F19, 1}, |
| unicode.Range{0x0F20, 0x0F29, 1}, |
| unicode.Range{0x0F35, 0x0F39, 2}, |
| unicode.Range{0x0F3E, 0x0F3F, 1}, |
| unicode.Range{0x0F71, 0x0F84, 1}, |
| unicode.Range{0x0F86, 0x0F8B, 1}, |
| unicode.Range{0x0F90, 0x0F95, 1}, |
| unicode.Range{0x0F97, 0x0F97, 1}, |
| unicode.Range{0x0F99, 0x0FAD, 1}, |
| unicode.Range{0x0FB1, 0x0FB7, 1}, |
| unicode.Range{0x0FB9, 0x0FB9, 1}, |
| unicode.Range{0x20D0, 0x20DC, 1}, |
| unicode.Range{0x20E1, 0x3005, 0x3005 - 0x20E1}, |
| unicode.Range{0x302A, 0x302F, 1}, |
| unicode.Range{0x3031, 0x3035, 1}, |
| unicode.Range{0x3099, 0x309A, 1}, |
| unicode.Range{0x309D, 0x309E, 1}, |
| unicode.Range{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 /\>/ x/\<(.|\n)+/ s/\n/ /g |
| ,x v/^\<!ENTITY/d |
| ,s/\<!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(""") // shorter than """ |
| esc_apos = []byte("'") // shorter than "'" |
| esc_amp = []byte("&") |
| esc_lt = []byte("<") |
| esc_gt = []byte(">") |
| ) |
| |
| // Escape writes to w the properly escaped XML equivalent |
| // of the plain text data s. |
| func Escape(w io.Writer, s []byte) { |
| var esc []byte |
| last := 0 |
| for i, c := range s { |
| switch c { |
| case '"': |
| esc = esc_quot |
| case '\'': |
| esc = esc_apos |
| case '&': |
| esc = esc_amp |
| case '<': |
| esc = esc_lt |
| case '>': |
| esc = esc_gt |
| default: |
| continue |
| } |
| w.Write(s[last:i]) |
| w.Write(esc) |
| last = i + 1 |
| } |
| w.Write(s[last:]) |
| } |
