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render_html.go
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render_html.go
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package table
import (
"html"
"strings"
)
const (
// DefaultHTMLCSSClass stores the css-class to use when none-provided via
// SetHTMLCSSClass(cssClass string).
DefaultHTMLCSSClass = "go-pretty-table"
)
// RenderHTML renders the Table in HTML format. Example:
// <table class="go-pretty-table">
// <thead>
// <tr>
// <th align="right">#</th>
// <th>First Name</th>
// <th>Last Name</th>
// <th align="right">Salary</th>
// <th> </th>
// </tr>
// </thead>
// <tbody>
// <tr>
// <td align="right">1</td>
// <td>Arya</td>
// <td>Stark</td>
// <td align="right">3000</td>
// <td> </td>
// </tr>
// <tr>
// <td align="right">20</td>
// <td>Jon</td>
// <td>Snow</td>
// <td align="right">2000</td>
// <td>You know nothing, Jon Snow!</td>
// </tr>
// <tr>
// <td align="right">300</td>
// <td>Tyrion</td>
// <td>Lannister</td>
// <td align="right">5000</td>
// <td> </td>
// </tr>
// </tbody>
// <tfoot>
// <tr>
// <td align="right"> </td>
// <td> </td>
// <td>Total</td>
// <td align="right">10000</td>
// <td> </td>
// </tr>
// </tfoot>
// </table>
func (t *Table) RenderHTML() string {
t.initForRender()
var out strings.Builder
if t.numColumns > 0 {
out.WriteString("<table class=\"")
if t.htmlCSSClass != "" {
out.WriteString(t.htmlCSSClass)
} else {
out.WriteString(DefaultHTMLCSSClass)
}
out.WriteString("\">\n")
t.htmlRenderRows(&out, t.rowsHeader, renderHint{isHeaderRow: true})
t.htmlRenderRows(&out, t.rows, renderHint{})
t.htmlRenderRows(&out, t.rowsFooter, renderHint{isFooterRow: true})
out.WriteString("</table>")
}
return t.render(&out)
}
func (t *Table) htmlRenderRow(out *strings.Builder, row rowStr, hint renderHint) {
out.WriteString(" <tr>\n")
for colIdx := 0; colIdx < t.numColumns; colIdx++ {
var colStr string
if colIdx < len(row) {
colStr = row[colIdx]
}
// header uses "th" instead of "td"
colTagName := "td"
if hint.isHeaderRow {
colTagName = "th"
}
// determine the HTML "align"/"valign" property values
align := t.getAlign(colIdx, hint).HTMLProperty()
vAlign := t.getVAlign(colIdx, hint).HTMLProperty()
// determine the HTML "class" property values for the colors
class := t.getColumnColors(colIdx, hint).HTMLProperty()
// write the row
out.WriteString(" <")
out.WriteString(colTagName)
if align != "" {
out.WriteRune(' ')
out.WriteString(align)
}
if class != "" {
out.WriteRune(' ')
out.WriteString(class)
}
if vAlign != "" {
out.WriteRune(' ')
out.WriteString(vAlign)
}
out.WriteString(">")
if len(colStr) > 0 {
out.WriteString(strings.Replace(html.EscapeString(colStr), "\n", "<br/>", -1))
} else {
out.WriteString(" ")
}
out.WriteString("</")
out.WriteString(colTagName)
out.WriteString(">\n")
}
out.WriteString(" </tr>\n")
}
func (t *Table) htmlRenderRows(out *strings.Builder, rows []rowStr, hint renderHint) {
if len(rows) > 0 {
// determine that tag to use based on the type of the row
rowsTag := "tbody"
if hint.isHeaderRow {
rowsTag = "thead"
} else if hint.isFooterRow {
rowsTag = "tfoot"
}
var renderedTagOpen, shouldRenderTagClose bool
for idx, row := range rows {
hint.rowNumber = idx + 1
if len(row) > 0 {
if !renderedTagOpen {
out.WriteString(" <")
out.WriteString(rowsTag)
out.WriteString(">\n")
renderedTagOpen = true
}
t.htmlRenderRow(out, row, hint)
shouldRenderTagClose = true
}
}
if shouldRenderTagClose {
out.WriteString(" </")
out.WriteString(rowsTag)
out.WriteString(">\n")
}
}
}