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package ansi
import (
"bytes"
"io"
"strings"
"github.com/muesli/reflow/wordwrap"
)
// A ParagraphElement is used to render individual paragraphs.
type ParagraphElement struct {
First bool
}
func (e *ParagraphElement) Render(w io.Writer, ctx RenderContext) error {
bs := ctx.blockStack
rules := ctx.options.Styles.Paragraph
if !e.First {
_, _ = io.WriteString(w, "\n")
}
be := BlockElement{
Block: &bytes.Buffer{},
Style: cascadeStyle(bs.Current().Style, rules, false),
}
bs.Push(be)
renderText(w, ctx.options.ColorProfile, bs.Parent().Style.StylePrimitive, rules.BlockPrefix)
renderText(bs.Current().Block, ctx.options.ColorProfile, bs.Current().Style.StylePrimitive, rules.Prefix)
return nil
}
func (e *ParagraphElement) Finish(w io.Writer, ctx RenderContext) error {
bs := ctx.blockStack
rules := bs.Current().Style
mw := NewMarginWriter(ctx, w, rules)
if len(strings.TrimSpace(bs.Current().Block.String())) > 0 {
flow := wordwrap.NewWriter(int(bs.Width(ctx)))
flow.KeepNewlines = ctx.options.PreserveNewLines
_, _ = flow.Write(bs.Current().Block.Bytes())
flow.Close()
_, err := mw.Write(flow.Bytes())
if err != nil {
return err
}
_, _ = io.WriteString(mw, "\n")
}
renderText(w, ctx.options.ColorProfile, bs.Current().Style.StylePrimitive, rules.Suffix)
renderText(w, ctx.options.ColorProfile, bs.Parent().Style.StylePrimitive, rules.BlockSuffix)
bs.Current().Block.Reset()
bs.Pop()
return nil
}
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