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