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// Copyright 2012 Apcera Inc. All rights reserved.
package termtables
import "strings"
type lineType int
// These lines are for horizontal rules; these indicate desired styling,
// but simplistic (pure ASCII) markup characters may end up leaving the
// variant lines indistinguishable from LINE_INNER.
const (
// LINE_INNER *must* be the default; where there are vertical lines drawn
// across an inner line, the character at that position should indicate
// that the vertical line goes both up and down from this horizontal line.
LINE_INNER lineType = iota
// LINE_TOP has only descenders
LINE_TOP
// LINE_SUBTOP has only descenders in the middle, but goes both up and
// down at the far left & right edges.
LINE_SUBTOP
// LINE_BOTTOM has only ascenders.
LINE_BOTTOM
)
// A Separator is a horizontal rule line, with associated information which
// indicates where in a table it is, sufficient for simple cases to let
// clean tables be drawn. If a row-spanning cell is created, then this will
// be insufficient: we can get away with hand-waving of "well, it's showing
// where the border would be" but a more capable handling will require
// structure reworking. Patches welcome.
type Separator struct {
where lineType
}
// Render returns the string representation of a horizontal rule line in the
// table.
func (s *Separator) Render(style *renderStyle) string {
// loop over getting dashes
parts := []string{}
for i := 0; i < style.columns; i++ {
w := style.PaddingLeft + style.CellWidth(i) + style.PaddingRight
parts = append(parts, strings.Repeat(style.BorderX, w))
}
switch s.where {
case LINE_TOP:
return style.BorderTopLeft + strings.Join(parts, style.BorderTop) + style.BorderTopRight
case LINE_SUBTOP:
return style.BorderLeft + strings.Join(parts, style.BorderTop) + style.BorderRight
case LINE_BOTTOM:
return style.BorderBottomLeft + strings.Join(parts, style.BorderBottom) + style.BorderBottomRight
case LINE_INNER:
return style.BorderLeft + strings.Join(parts, style.BorderI) + style.BorderRight
}
panic("not reached")
}
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