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|
package ui
import (
"strings"
"thehouseoficarus/internal/color"
)
type tableGlyphs struct {
topLeft, topSep, topRight rune
side, colSep rune
sepLeft, sepCross, sepRight rune
botLeft, botSep, botRight rune
fillH, fillHSep rune
titleSep rune
}
func tableGlyphSet(unicode bool) tableGlyphs {
if unicode {
return tableGlyphs{
topLeft: '╔', topSep: '╤', topRight: '╗', side: '║', colSep: '│',
sepLeft: '╟', sepCross: '┼', sepRight: '╢',
botLeft: '╚', botSep: '╧', botRight: '╝', fillH: '═', fillHSep: '─',
titleSep: '┬',
}
}
return tableGlyphs{
topLeft: '+', topSep: '+', topRight: '+', side: '|', colSep: '|',
sepLeft: '+', sepCross: '+', sepRight: '+',
botLeft: '+', botSep: '+', botRight: '+', fillH: '-', fillHSep: '-',
titleSep: '+',
}
}
type Table struct {
Title string
Columns []string
Rows [][]string
}
func (t *Table) Render(unicode bool, maxWidth int) []string {
g := tableGlyphSet(unicode)
nCols := len(t.Columns)
if nCols == 0 && len(t.Rows) > 0 {
nCols = len(t.Rows[0])
}
if nCols == 0 {
return nil
}
colWidths := make([]int, nCols)
for i, h := range t.Columns {
colWidths[i] = color.VisibleLen(h)
}
for _, row := range t.Rows {
for i, cell := range row {
if i >= nCols {
break
}
vl := color.VisibleLen(cell)
if vl > colWidths[i] {
colWidths[i] = vl
}
}
}
if maxWidth > 0 {
overhead := 3*nCols + 1
total := overhead
for _, w := range colWidths {
total += w
}
if total > maxWidth {
last := nCols - 1
budget := maxWidth - overhead
for i := 0; i < last; i++ {
budget -= colWidths[i]
}
if budget < 5 {
budget = 5
}
colWidths[last] = budget
if len(t.Columns) > last {
t.Columns[last] = color.TruncateVisible(t.Columns[last], budget)
}
for i := range t.Rows {
if len(t.Rows[i]) > last {
t.Rows[i][last] = color.TruncateVisible(t.Rows[i][last], budget)
}
}
}
}
makeSep := func(left, cross, right rune, fill rune) string {
var b strings.Builder
b.WriteRune(left)
for i := 0; i < nCols; i++ {
if i > 0 {
b.WriteRune(cross)
}
b.WriteString(strings.Repeat(string(fill), colWidths[i]+2))
}
b.WriteRune(right)
return b.String()
}
makeRow := func(cells []string) string {
var b strings.Builder
b.WriteRune(g.side)
for i := 0; i < nCols; i++ {
if i > 0 {
b.WriteRune(g.colSep)
}
cell := ""
if i < len(cells) {
cell = cells[i]
}
pad := colWidths[i] - color.VisibleLen(cell)
if pad < 0 {
pad = 0
}
b.WriteString(" " + cell + strings.Repeat(" ", pad) + " ")
}
b.WriteRune(g.side)
return b.String()
}
hasTitle := t.Title != ""
hasCols := len(t.Columns) > 0
var out []string
if hasTitle {
innerWidth := 0
for _, w := range colWidths {
innerWidth += w + 2
}
innerWidth += nCols - 1
var tb strings.Builder
tb.WriteRune(g.topLeft)
tb.WriteString(strings.Repeat(string(g.fillH), innerWidth))
tb.WriteRune(g.topRight)
out = append(out, tb.String())
var tr strings.Builder
tr.WriteRune(g.side)
tr.WriteString(" ")
tr.WriteString(t.Title)
padding := innerWidth - 2 - color.VisibleLen(t.Title)
if padding < 0 {
padding = 0
}
tr.WriteString(strings.Repeat(" ", padding))
tr.WriteString(" ")
tr.WriteRune(g.side)
out = append(out, tr.String())
out = append(out, makeSep(g.sepLeft, g.titleSep, g.sepRight, g.fillHSep))
} else {
out = append(out, makeSep(g.topLeft, g.topSep, g.topRight, g.fillH))
}
if hasCols {
out = append(out, makeRow(t.Columns))
out = append(out, makeSep(g.sepLeft, g.sepCross, g.sepRight, g.fillHSep))
}
for _, row := range t.Rows {
out = append(out, makeRow(row))
}
out = append(out, makeSep(g.botLeft, g.botSep, g.botRight, g.fillH))
return out
}
|
