106 lines
2.5 KiB
Go
106 lines
2.5 KiB
Go
package ace
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import (
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"bytes"
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"fmt"
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"io"
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"strings"
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)
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// Comment types
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const (
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commentTypeHidden = "hidden"
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commentTypeRevealed = "revealed"
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)
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// helperMethodConditionalComment represents a helper method
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// conditional comment.
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type helperMethodConditionalComment struct {
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elementBase
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commentType string
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condition string
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}
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// WriteTo writes data to w.
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func (e *helperMethodConditionalComment) WriteTo(w io.Writer) (int64, error) {
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var bf bytes.Buffer
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// Write an open tag.
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bf.WriteString(e.opts.DelimLeft)
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bf.WriteString(preDefinedFuncNameHTML)
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bf.WriteString(space)
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bf.WriteString(doubleQuote)
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bf.WriteString(lt)
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bf.WriteString(exclamation)
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bf.WriteString(doubleQuote)
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bf.WriteString(e.opts.DelimRight)
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if e.commentType == commentTypeHidden {
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bf.WriteString(hyphen)
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bf.WriteString(hyphen)
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}
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bf.WriteString(bracketOpen)
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bf.WriteString("if ")
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bf.WriteString(e.condition)
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bf.WriteString(bracketClose)
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bf.WriteString(gt)
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bf.WriteString(lf)
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// Write the children's HTML.
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if i, err := e.writeChildren(&bf); err != nil {
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return i, err
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}
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// Write a close tag.
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bf.WriteString(e.opts.DelimLeft)
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bf.WriteString(preDefinedFuncNameHTML)
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bf.WriteString(space)
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bf.WriteString(doubleQuote)
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bf.WriteString(lt)
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bf.WriteString(exclamation)
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bf.WriteString(doubleQuote)
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bf.WriteString(e.opts.DelimRight)
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bf.WriteString(bracketOpen)
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bf.WriteString("endif")
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bf.WriteString(bracketClose)
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if e.commentType == commentTypeHidden {
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bf.WriteString(hyphen)
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bf.WriteString(hyphen)
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}
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bf.WriteString(gt)
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// Write the buffer.
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i, err := w.Write(bf.Bytes())
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return int64(i), err
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}
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// ContainPlainText returns true.
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func (e *helperMethodConditionalComment) ContainPlainText() bool {
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return true
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}
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// newHelperMethodConditionalComment creates and returns an HTML comment.
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func newHelperMethodConditionalComment(ln *line, rslt *result, src *source, parent element, opts *Options) (*helperMethodConditionalComment, error) {
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switch len(ln.tokens) {
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case 2:
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return nil, fmt.Errorf("no comment type is specified [file: %s][line: %d]", ln.fileName(), ln.no)
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case 3:
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return nil, fmt.Errorf("no condition is specified [file: %s][line: %d]", ln.fileName(), ln.no)
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}
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commentType := ln.tokens[2]
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if commentType != commentTypeHidden && commentType != commentTypeRevealed {
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return nil, fmt.Errorf("the comment type is invalid [file: %s][line: %d]", ln.fileName(), ln.no)
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}
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e := &helperMethodConditionalComment{
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elementBase: newElementBase(ln, rslt, src, parent, opts),
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commentType: commentType,
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condition: strings.Join(ln.tokens[3:], space),
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}
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return e, nil
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}
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