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// Copyright 2025 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package fileicon
import (
"html/template"
"path"
"strings"
"sync"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/json"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/options"
"code.gitea.io/gitea/modules/svg"
)
type materialIconRulesData struct {
FileNames map[string]string `json:"fileNames"`
FolderNames map[string]string `json:"folderNames"`
FileExtensions map[string]string `json:"fileExtensions"`
LanguageIDs map[string]string `json:"languageIds"`
}
type MaterialIconProvider struct {
once sync.Once
rules *materialIconRulesData
svgs map[string]string
}
var materialIconProvider MaterialIconProvider
func DefaultMaterialIconProvider() *MaterialIconProvider {
materialIconProvider.once.Do(materialIconProvider.loadData)
return &materialIconProvider
}
func (m *MaterialIconProvider) loadData() {
buf, err := options.AssetFS().ReadFile("fileicon/material-icon-rules.json")
if err != nil {
log.Error("Failed to read material icon rules: %v", err)
return
}
err = json.Unmarshal(buf, &m.rules)
if err != nil {
log.Error("Failed to unmarshal material icon rules: %v", err)
return
}
buf, err = options.AssetFS().ReadFile("fileicon/material-icon-svgs.json")
if err != nil {
log.Error("Failed to read material icon rules: %v", err)
return
}
err = json.Unmarshal(buf, &m.svgs)
if err != nil {
log.Error("Failed to unmarshal material icon rules: %v", err)
return
}
log.Debug("Loaded material icon rules and SVG images")
}
func (m *MaterialIconProvider) renderFileIconSVG(p *RenderedIconPool, name, svg, extraClass string) template.HTML {
// This part is a bit hacky, but it works really well. It should be safe to do so because all SVG icons are generated by us.
// Will try to refactor this in the future.
if !strings.HasPrefix(svg, "<svg") {
panic("Invalid SVG icon")
}
svgID := "svg-mfi-" + name
svgCommonAttrs := `class="svg git-entry-icon ` + extraClass + `" width="16" height="16" aria-hidden="true"`
if p.IconSVGs[svgID] == "" {
p.IconSVGs[svgID] = template.HTML(`<svg id="` + svgID + `" ` + svgCommonAttrs + svg[4:])
}
return template.HTML(`<svg ` + svgCommonAttrs + `><use xlink:href="#` + svgID + `"></use></svg>`)
}
func (m *MaterialIconProvider) FileIcon(p *RenderedIconPool, entry *git.TreeEntry) template.HTML {
if m.rules == nil {
return BasicThemeIcon(entry)
}
if entry.IsLink() {
if te, err := entry.FollowLink(); err == nil && te.IsDir() {
// keep the old "octicon-xxx" class name to make some "theme plugin selector" could still work
return svg.RenderHTML("material-folder-symlink", 16, "octicon-file-directory-symlink")
}
return svg.RenderHTML("octicon-file-symlink-file") // TODO: find some better icons for them
}
name := m.findIconNameByGit(entry)
// the material icon pack's "folder" icon doesn't look good, so use our built-in one
// keep the old "octicon-xxx" class name to make some "theme plugin selector" could still work
if iconSVG, ok := m.svgs[name]; ok && name != "folder" && iconSVG != "" {
// keep the old "octicon-xxx" class name to make some "theme plugin selector" could still work
extraClass := "octicon-file"
switch {
case entry.IsDir():
extraClass = "octicon-file-directory-fill"
case entry.IsSubModule():
extraClass = "octicon-file-submodule"
}
return m.renderFileIconSVG(p, name, iconSVG, extraClass)
}
// TODO: use an interface or wrapper for git.Entry to make the code testable.
return BasicThemeIcon(entry)
}
func (m *MaterialIconProvider) findIconNameWithLangID(s string) string {
if _, ok := m.svgs[s]; ok {
return s
}
if s, ok := m.rules.LanguageIDs[s]; ok {
if _, ok = m.svgs[s]; ok {
return s
}
}
return ""
}
func (m *MaterialIconProvider) FindIconName(name string, isDir bool) string {
fileNameLower := strings.ToLower(path.Base(name))
if isDir {
if s, ok := m.rules.FolderNames[fileNameLower]; ok {
return s
}
return "folder"
}
if s, ok := m.rules.FileNames[fileNameLower]; ok {
if s = m.findIconNameWithLangID(s); s != "" {
return s
}
}
for i := len(fileNameLower) - 1; i >= 0; i-- {
if fileNameLower[i] == '.' {
ext := fileNameLower[i+1:]
if s, ok := m.rules.FileExtensions[ext]; ok {
if s = m.findIconNameWithLangID(s); s != "" {
return s
}
}
}
}
return "file"
}
func (m *MaterialIconProvider) findIconNameByGit(entry *git.TreeEntry) string {
if entry.IsSubModule() {
return "folder-git"
}
return m.FindIconName(entry.Name(), entry.IsDir())
}
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