feat: add type query parameters for specifying precise search

Author: jnlin

routers/home.go

@@ -299,7 +299,9 @@ func ExploreCode(ctx *context.Context) {
 		page = 1
 	}
 
-	isMatch := false
+	queryType := strings.TrimSpace(ctx.Query("t"))
+	isMatch := queryType == "match"
+
 	var (
 		repoIDs []int64
 		err     error

routers/repo/search.go

@@ -28,7 +28,9 @@ func Search(ctx *context.Context) {
 	if page <= 0 {
 		page = 1
 	}
-	isMatch := false
+	queryType := strings.TrimSpace(ctx.Query("t"))
+	isMatch := queryType == "match"
+
 	total, searchResults, searchResultLanguages, err := code_indexer.PerformSearch([]int64{ctx.Repo.Repository.ID},
 		language, keyword, page, setting.UI.RepoSearchPagingNum, isMatch)
 	if err != nil {