jbergner
c212155f61
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release-tag / release-image (push) Successful in 1m52s
109 lines
3.2 KiB
Go
109 lines
3.2 KiB
Go
package badge
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import (
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"crypto/sha256"
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"encoding/hex"
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"fmt"
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"html"
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"strings"
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"unicode/utf8"
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)
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type Options struct {
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Label string
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Message string
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Extent string
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Style string
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Theme string
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Link string
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LeftColor string
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RightColor string
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}
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var extentColors = map[string]string{
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"none": "#2f855a", "assisted": "#2b6cb0", "partial": "#b7791f", "mostly": "#c05621", "full": "#c53030",
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}
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func Render(o Options) ([]byte, string) {
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label := truncate(strings.TrimSpace(o.Label), 40)
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if label == "" {
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label = "UCNG"
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}
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message := truncate(strings.TrimSpace(o.Message), 80)
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if message == "" {
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message = o.Extent
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}
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style := o.Style
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if style != "flat-square" {
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style = "flat"
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}
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leftWidth := textWidth(label)
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rightWidth := textWidth(message)
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total := leftWidth + rightWidth
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radius := 3
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if style == "flat-square" {
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radius = 0
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}
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leftColor, rightColor := "#555555", extentColors[o.Extent]
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if rightColor == "" {
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rightColor = "#4a5568"
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}
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if o.Theme == "mono" {
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leftColor, rightColor = "#262626", "#666666"
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}
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if isHexColor(o.LeftColor) {
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leftColor = o.LeftColor
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}
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if isHexColor(o.RightColor) {
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rightColor = o.RightColor
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}
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title := html.EscapeString(label + ": " + message)
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labelEsc := html.EscapeString(label)
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messageEsc := html.EscapeString(message)
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openLink, closeLink := "", ""
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if strings.HasPrefix(o.Link, "https://") || strings.HasPrefix(o.Link, "http://") {
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openLink = `<a href="` + html.EscapeString(o.Link) + `" target="_top">`
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closeLink = `</a>`
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}
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svg := fmt.Sprintf(`<svg xmlns="http://www.w3.org/2000/svg" role="img" aria-label="%s" width="%d" height="20" viewBox="0 0 %d 20"><title>%s</title>%s<linearGradient id="s" x2="0" y2="100%%"><stop offset="0" stop-color="#fff" stop-opacity=".12"/><stop offset="1" stop-opacity=".12"/></linearGradient><clipPath id="r"><rect width="%d" height="20" rx="%d" fill="#fff"/></clipPath><g clip-path="url(#r)"><rect width="%d" height="20" fill="%s"/><rect x="%d" width="%d" height="20" fill="%s"/><rect width="%d" height="20" fill="url(#s)"/></g><g fill="#fff" text-anchor="middle" font-family="Verdana,Geneva,DejaVu Sans,sans-serif" font-size="11"><text x="%d" y="15" fill="#010101" fill-opacity=".3">%s</text><text x="%d" y="14">%s</text><text x="%d" y="15" fill="#010101" fill-opacity=".3">%s</text><text x="%d" y="14">%s</text></g>%s</svg>`,
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title, total, total, title, openLink, total, radius, leftWidth, leftColor, leftWidth, rightWidth, rightColor, total,
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leftWidth/2, labelEsc, leftWidth/2, labelEsc, leftWidth+rightWidth/2, messageEsc, leftWidth+rightWidth/2, messageEsc, closeLink)
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data := []byte(svg)
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hash := sha256.Sum256(data)
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return data, `"` + hex.EncodeToString(hash[:12]) + `"`
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}
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func textWidth(s string) int {
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runes := utf8.RuneCountInString(s)
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width := runes*7 + 12
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if width < 40 {
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width = 40
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}
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return width
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}
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func truncate(s string, max int) string {
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r := []rune(s)
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if len(r) <= max {
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return s
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}
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return string(r[:max-1]) + "…"
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}
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func isHexColor(s string) bool {
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if len(s) != 7 || s[0] != '#' {
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return false
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}
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for _, r := range s[1:] {
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if !((r >= '0' && r <= '9') || (r >= 'a' && r <= 'f') || (r >= 'A' && r <= 'F')) {
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return false
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}
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}
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return true
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}
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