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// Copyright 2020 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package svg
import (
"fmt"
"html/template"
"path"
"strings"
gitea_html "code.gitea.io/gitea/modules/html"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/public"
)
var svgIcons map[string]string
const defaultSize = 16
// Init discovers SVG icons and populates the `svgIcons` variable
func Init() error {
const svgAssetsPath = "assets/img/svg"
files, err := public.AssetFS().ListFiles(svgAssetsPath)
if err != nil {
return err
}
svgIcons = make(map[string]string, len(files))
for _, file := range files {
if path.Ext(file) != ".svg" {
continue
}
bs, err := public.AssetFS().ReadFile(svgAssetsPath, file)
if err != nil {
log.Error("Failed to read SVG file %s: %v", file, err)
} else {
svgIcons[file[:len(file)-4]] = string(Normalize(bs, defaultSize))
}
}
return nil
}
func MockIcon(icon string) func() {
if svgIcons == nil {
svgIcons = make(map[string]string)
}
orig, exist := svgIcons[icon]
svgIcons[icon] = fmt.Sprintf(`<svg class="svg %s" width="%d" height="%d"></svg>`, icon, defaultSize, defaultSize)
return func() {
if exist {
svgIcons[icon] = orig
} else {
delete(svgIcons, icon)
}
}
}
// RenderHTML renders icons - arguments icon name (string), size (int), class (string)
func RenderHTML(icon string, others ...any) template.HTML {
size, class := gitea_html.ParseSizeAndClass(defaultSize, "", others...)
if svgStr, ok := svgIcons[icon]; ok {
// the code is somewhat hacky, but it just works, because the SVG contents are all normalized
if size != defaultSize {
svgStr = strings.Replace(svgStr, fmt.Sprintf(`width="%d"`, defaultSize), fmt.Sprintf(`width="%d"`, size), 1)
svgStr = strings.Replace(svgStr, fmt.Sprintf(`height="%d"`, defaultSize), fmt.Sprintf(`height="%d"`, size), 1)
}
if class != "" {
svgStr = strings.Replace(svgStr, `class="`, fmt.Sprintf(`class="%s `, class), 1)
}
return template.HTML(svgStr)
}
// during test (or something wrong happens), there is no SVG loaded, so use a dummy span to tell that the icon is missing
return template.HTML(fmt.Sprintf("<span>%s(%d/%s)</span>", template.HTMLEscapeString(icon), size, template.HTMLEscapeString(class)))
}
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