render license info for repo homepage

routers/repo/view.go

@@ -7,6 +7,7 @@ package repo
 
 import (
 	"bytes"
+	"code.gitea.io/gitea/modules/options"
 	"encoding/base64"
 	"fmt"
 	gotemplate "html/template"
@@ -569,8 +570,9 @@ func safeURL(address string) string {
 
 type ContributorInfo struct {
 	UserInfo *models.User
-	Email    string  // for contributor who is not a registered user
+	Email    string // for contributor who is not a registered user
 }
+
 // Home render repository home page
 func Home(ctx *context.Context) {
 	if len(ctx.Repo.Units) > 0 {
@@ -579,12 +581,12 @@ func Home(ctx *context.Context) {
 		if err == nil && contributors != nil {
 			var contributorInfos []*ContributorInfo
 			for _, c := range contributors {
-				user,err := models.GetUserByEmail(c.Email)
+				user, err := models.GetUserByEmail(c.Email)
 				if err == nil {
 					contributorInfos = append(contributorInfos, &ContributorInfo{
 						user, c.Email,
 					})
-				}else{
+				} else {
 					contributorInfos = append(contributorInfos, &ContributorInfo{
 						nil, c.Email,
 					})
@@ -633,6 +635,39 @@ func Home(ctx *context.Context) {
 	ctx.NotFound("Home", fmt.Errorf(ctx.Tr("units.error.no_unit_allowed_repo")))
 }
 
+func renderLicense(ctx *context.Context) {
+	entry, err := ctx.Repo.Commit.GetTreeEntryByPath("LICENSE")
+	if err != nil {
+		log.Error(err.Error())
+		return
+	}
+	blob := entry.Blob()
+	dataRc, err := blob.DataAsync()
+	if err != nil {
+		log.Error("DataAsync", err)
+		return
+	}
+	defer dataRc.Close()
+	buf, err := ioutil.ReadAll(dataRc)
+	if err != nil {
+		log.Error("DataAsync", err)
+		return
+	}
+	for _, f := range models.Licenses {
+		license, err := options.License(f)
+		if err != nil {
+			log.Error("failed to get license content: %v, err:%v", f, err)
+			continue
+		}
+		if bytes.Compare(buf,license) == 0 {
+			log.Info("got matched license:%v",f)
+			ctx.Data["LICENSE"] = f
+			return
+		}
+	}
+	log.Info("not found matched license,repo:%v",ctx.Repo.Repository.Name)
+}
+
 func renderLanguageStats(ctx *context.Context) {
 	langs, err := ctx.Repo.Repository.GetTopLanguageStats(5)
 	if err != nil {
@@ -679,6 +714,8 @@ func renderCode(ctx *context.Context) {
 
 	// Get Topics of this repo
 	renderRepoTopics(ctx)
+	// Get license of this repo
+	renderLicense(ctx)
 	if ctx.Written() {
 		return
 	}

templates/repo/home.tmpl

@@ -170,7 +170,9 @@
 					
 					<p class="ui">
 						<i class="clone outline icon"></i>
-						MIT
+						{{if .LICENSE}}
+							 {{.LICENSE}}
+						{{end}}
 					</p>
 
 					<div >