Add detected file language to code search (#10256)

Move langauge detection to separate module to be more reusable

Add option to disable vendored file exclusion from file search

Allways show all language stats for search

docs/content/doc/advanced/config-cheat-sheet.en-us.md

@@ -242,6 +242,7 @@ relation to port exhaustion.
 - `REPO_INDEXER_PATH`: **indexers/repos.bleve**: Index file used for code search.
 - `REPO_INDEXER_INCLUDE`: **empty**: A comma separated list of glob patterns (see https://github.com/gobwas/glob) to **include** in the index. Use `**.txt` to match any files with .txt extension. An empty list means include all files.
 - `REPO_INDEXER_EXCLUDE`: **empty**: A comma separated list of glob patterns (see https://github.com/gobwas/glob) to **exclude** from the index. Files that match this list will not be indexed, even if they match in `REPO_INDEXER_INCLUDE`.
+- `REPO_INDEXER_EXCLUDE_VENDORED`: **true**: Exclude vendored files from index.
 - `UPDATE_BUFFER_LEN`: **20**: Buffer length of index request.
 - `MAX_FILE_SIZE`: **1048576**: Maximum size in bytes of files to be indexed.
 - `STARTUP_TIMEOUT`: **30s**: If the indexer takes longer than this timeout to start - fail. (This timeout will be added to the hammer time above for child processes - as bleve will not start until the previous parent is shutdown.) Set to zero to never timeout.

docs/content/doc/advanced/repo-indexer.en-us.md

@@ -42,6 +42,8 @@ Gitea applies glob pattern matching from the [`gobwas/glob` library](https://git
 
 Limiting the list of files prevents the indexes from becoming polluted with derived or irrelevant files (e.g. lss, sym, map, etc.), so the search results are more relevant. It can also help reduce the index size.
 
+`REPO_INDEXER_EXCLUDE_VENDORED` (default: true) excludes vendored files from index.
+
 `REPO_INDEXER_INCLUDE` (default: empty) is a comma separated list of glob patterns to **include** in the index. An empty list means "_include all files_".
 `REPO_INDEXER_EXCLUDE` (default: empty) is a comma separated list of glob patterns to **exclude** from the index. Files that match this list will not be indexed. `REPO_INDEXER_EXCLUDE` takes precedence over `REPO_INDEXER_INCLUDE`.
 

modules/analyze/code_langauge.go

@@ -0,0 +1,36 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package analyze
+
+import (
+	"path/filepath"
+
+	"github.com/src-d/enry/v2"
+)
+
+// GetCodeLanguageWithCallback detects code language based on file name and content using callback
+func GetCodeLanguageWithCallback(filename string, contentFunc func() ([]byte, error)) string {
+	if language, ok := enry.GetLanguageByExtension(filename); ok {
+		return language
+	}
+
+	if language, ok := enry.GetLanguageByFilename(filename); ok {
+		return language
+	}
+
+	content, err := contentFunc()
+	if err != nil {
+		return enry.OtherLanguage
+	}
+
+	return enry.GetLanguage(filepath.Base(filename), content)
+}
+
+// GetCodeLanguage detects code language based on file name and content
+func GetCodeLanguage(filename string, content []byte) string {
+	return GetCodeLanguageWithCallback(filename, func() ([]byte, error) {
+		return content, nil
+	})
+}

modules/git/repo_language_stats.go

@@ -9,7 +9,8 @@ import (
 	"io"
 	"io/ioutil"
 	"math"
-	"path/filepath"
+
+	"code.gitea.io/gitea/modules/analyze"
 
 	"github.com/src-d/enry/v2"
 	"gopkg.in/src-d/go-git.v4"
@@ -51,25 +52,15 @@ func (repo *Repository) GetLanguageStats(commitID string) (map[string]float32, e
 
 		// TODO: Use .gitattributes file for linguist overrides
 
-		language, ok := enry.GetLanguageByExtension(f.Name)
-		if !ok {
-			if language, ok = enry.GetLanguageByFilename(f.Name); !ok {
-				content, err := readFile(f, fileSizeLimit)
-				if err != nil {
-					return nil
-				}
-
-				language = enry.GetLanguage(filepath.Base(f.Name), content)
-				if language == enry.OtherLanguage {
-					return nil
-				}
-			}
+		language := analyze.GetCodeLanguageWithCallback(f.Name, func() ([]byte, error) {
+			return readFile(f, fileSizeLimit)
+		})
+		if language == enry.OtherLanguage || language == "" {
+			return nil
 		}
 
-		if language != "" {
-			sizes[language] += f.Size
-			total += f.Size
-		}
+		sizes[language] += f.Size
+		total += f.Size
 
 		return nil
 	})

modules/indexer/code/bleve.go

@@ -9,16 +9,20 @@ import (
 	"os"
 	"strconv"
 	"strings"
+	"time"
 
 	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/analyze"
 	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/charset"
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/timeutil"
 
 	"github.com/blevesearch/bleve"
-	"github.com/blevesearch/bleve/analysis/analyzer/custom"
+	analyzer_custom "github.com/blevesearch/bleve/analysis/analyzer/custom"
+	analyzer_keyword "github.com/blevesearch/bleve/analysis/analyzer/keyword"
 	"github.com/blevesearch/bleve/analysis/token/lowercase"
 	"github.com/blevesearch/bleve/analysis/token/unicodenorm"
 	"github.com/blevesearch/bleve/analysis/tokenizer/unicode"
@@ -26,6 +30,7 @@ import (
 	"github.com/blevesearch/bleve/mapping"
 	"github.com/blevesearch/bleve/search/query"
 	"github.com/ethantkoenig/rupture"
+	"github.com/src-d/enry/v2"
 )
 
 const unicodeNormalizeName = "unicodeNormalize"
@@ -86,8 +91,11 @@ func openIndexer(path string, latestVersion int) (bleve.Index, error) {
 
 // RepoIndexerData data stored in the repo indexer
 type RepoIndexerData struct {
-	RepoID  int64
-	Content string
+	RepoID    int64
+	CommitID  string
+	Content   string
+	Language  string
+	UpdatedAt time.Time
 }
 
 // Type returns the document type, for bleve's mapping.Classifier interface.
@@ -95,7 +103,11 @@ func (d *RepoIndexerData) Type() string {
 	return repoIndexerDocType
 }
 
-func addUpdate(update fileUpdate, repo *models.Repository, batch rupture.FlushingBatch) error {
+func addUpdate(commitSha string, update fileUpdate, repo *models.Repository, batch rupture.FlushingBatch) error {
+	// Ignore vendored files in code search
+	if setting.Indexer.ExcludeVendored && enry.IsVendor(update.Filename) {
+		return nil
+	}
 	stdout, err := git.NewCommand("cat-file", "-s", update.BlobSha).
 		RunInDir(repo.RepoPath())
 	if err != nil {
@@ -118,8 +130,11 @@ func addUpdate(update fileUpdate, repo *models.Repository, batch rupture.Flushin
 
 	id := filenameIndexerID(repo.ID, update.Filename)
 	return batch.Index(id, &RepoIndexerData{
-		RepoID:  repo.ID,
-		Content: string(charset.ToUTF8DropErrors(fileContents)),
+		RepoID:    repo.ID,
+		CommitID:  commitSha,
+		Content:   string(charset.ToUTF8DropErrors(fileContents)),
+		Language:  analyze.GetCodeLanguage(update.Filename, fileContents),
+		UpdatedAt: time.Now().UTC(),
 	})
 }
 
@@ -131,7 +146,7 @@ func addDelete(filename string, repo *models.Repository, batch rupture.FlushingB
 const (
 	repoIndexerAnalyzer      = "repoIndexerAnalyzer"
 	repoIndexerDocType       = "repoIndexerDocType"
-	repoIndexerLatestVersion = 4
+	repoIndexerLatestVersion = 5
 )
 
 // createRepoIndexer create a repo indexer if one does not already exist
@@ -145,11 +160,21 @@ func createRepoIndexer(path string, latestVersion int) (bleve.Index, error) {
 	textFieldMapping.IncludeInAll = false
 	docMapping.AddFieldMappingsAt("Content", textFieldMapping)
 
+	termFieldMapping := bleve.NewTextFieldMapping()
+	termFieldMapping.IncludeInAll = false
+	termFieldMapping.Analyzer = analyzer_keyword.Name
+	docMapping.AddFieldMappingsAt("Language", termFieldMapping)
+	docMapping.AddFieldMappingsAt("CommitID", termFieldMapping)
+
+	timeFieldMapping := bleve.NewDateTimeFieldMapping()
+	timeFieldMapping.IncludeInAll = false
+	docMapping.AddFieldMappingsAt("UpdatedAt", timeFieldMapping)
+
 	mapping := bleve.NewIndexMapping()
 	if err := addUnicodeNormalizeTokenFilter(mapping); err != nil {
 		return nil, err
 	} else if err := mapping.AddCustomAnalyzer(repoIndexerAnalyzer, map[string]interface{}{
-		"type":          custom.Name,
+		"type":          analyzer_custom.Name,
 		"char_filters":  []string{},
 		"tokenizer":     unicode.Name,
 		"token_filters": []string{unicodeNormalizeName, lowercase.Name},
@@ -255,7 +280,7 @@ func (b *BleveIndexer) Index(repoID int64) error {
 
 	batch := rupture.NewFlushingBatch(b.indexer, maxBatchSize)
 	for _, update := range changes.Updates {
-		if err := addUpdate(update, repo, batch); err != nil {
+		if err := addUpdate(sha, update, repo, batch); err != nil {
 			return err
 		}
 	}
@@ -289,7 +314,7 @@ func (b *BleveIndexer) Delete(repoID int64) error {
 
 // Search searches for files in the specified repo.
 // Returns the matching file-paths
-func (b *BleveIndexer) Search(repoIDs []int64, keyword string, page, pageSize int) (int64, []*SearchResult, error) {
+func (b *BleveIndexer) Search(repoIDs []int64, language, keyword string, page, pageSize int) (int64, []*SearchResult, []*SearchResultLanguages, error) {
 	phraseQuery := bleve.NewMatchPhraseQuery(keyword)
 	phraseQuery.FieldVal = "Content"
 	phraseQuery.Analyzer = repoIndexerAnalyzer
@@ -309,16 +334,35 @@ func (b *BleveIndexer) Search(repoIDs []int64, keyword string, page, pageSize in
 		indexerQuery = phraseQuery
 	}
 
+	// Save for reuse without language filter
+	facetQuery := indexerQuery
+	if len(language) > 0 {
+		languageQuery := bleve.NewMatchQuery(language)
+		languageQuery.FieldVal = "Language"
+		languageQuery.Analyzer = analyzer_keyword.Name
+
+		indexerQuery = bleve.NewConjunctionQuery(
+			indexerQuery,
+			languageQuery,
+		)
+	}
+
 	from := (page - 1) * pageSize
 	searchRequest := bleve.NewSearchRequestOptions(indexerQuery, pageSize, from, false)
-	searchRequest.Fields = []string{"Content", "RepoID"}
+	searchRequest.Fields = []string{"Content", "RepoID", "Language", "CommitID", "UpdatedAt"}
 	searchRequest.IncludeLocations = true
 
+	if len(language) == 0 {
+		searchRequest.AddFacet("languages", bleve.NewFacetRequest("Language", 10))
+	}
+
 	result, err := b.indexer.Search(searchRequest)
 	if err != nil {
-		return 0, nil, err
+		return 0, nil, nil, err
 	}
 
+	total := int64(result.Total)
+
 	searchResults := make([]*SearchResult, len(result.Hits))
 	for i, hit := range result.Hits {
 		var startIndex, endIndex int = -1, -1
@@ -333,13 +377,47 @@ func (b *BleveIndexer) Search(repoIDs []int64, keyword string, page, pageSize in
 				endIndex = locationEnd
 			}
 		}
+		language := hit.Fields["Language"].(string)
+		var updatedUnix timeutil.TimeStamp
+		if t, err := time.Parse(time.RFC3339, hit.Fields["UpdatedAt"].(string)); err == nil {
+			updatedUnix = timeutil.TimeStamp(t.Unix())
+		}
 		searchResults[i] = &SearchResult{
-			RepoID:     int64(hit.Fields["RepoID"].(float64)),
-			StartIndex: startIndex,
-			EndIndex:   endIndex,
-			Filename:   filenameOfIndexerID(hit.ID),
-			Content:    hit.Fields["Content"].(string),
+			RepoID:      int64(hit.Fields["RepoID"].(float64)),
+			StartIndex:  startIndex,
+			EndIndex:    endIndex,
+			Filename:    filenameOfIndexerID(hit.ID),
+			Content:     hit.Fields["Content"].(string),
+			CommitID:    hit.Fields["CommitID"].(string),
+			UpdatedUnix: updatedUnix,
+			Language:    language,
+			Color:       enry.GetColor(language),
 		}
 	}
-	return int64(result.Total), searchResults, nil
+
+	searchResultLanguages := make([]*SearchResultLanguages, 0, 10)
+	if len(language) > 0 {
+		// Use separate query to go get all language counts
+		facetRequest := bleve.NewSearchRequestOptions(facetQuery, 1, 0, false)
+		facetRequest.Fields = []string{"Content", "RepoID", "Language", "CommitID", "UpdatedAt"}
+		facetRequest.IncludeLocations = true
+		facetRequest.AddFacet("languages", bleve.NewFacetRequest("Language", 10))
+
+		if result, err = b.indexer.Search(facetRequest); err != nil {
+			return 0, nil, nil, err
+		}
+
+	}
+	languagesFacet := result.Facets["languages"]
+	for _, term := range languagesFacet.Terms {
+		if len(term.Term) == 0 {
+			continue
+		}
+		searchResultLanguages = append(searchResultLanguages, &SearchResultLanguages{
+			Language: term.Term,
+			Color:    enry.GetColor(term.Term),
+			Count:    term.Count,
+		})
+	}
+	return total, searchResults, searchResultLanguages, nil
 }

modules/indexer/code/bleve_test.go

@@ -49,27 +49,34 @@ func TestIndexAndSearch(t *testing.T) {
 		keywords = []struct {
 			Keyword string
 			IDs     []int64
+			Langs   int
 		}{
 			{
 				Keyword: "Description",
 				IDs:     []int64{1},
+				Langs:   1,
 			},
 			{
 				Keyword: "repo1",
 				IDs:     []int64{1},
+				Langs:   1,
 			},
 			{
 				Keyword: "non-exist",
 				IDs:     []int64{},
+				Langs:   0,
 			},
 		}
 	)
 
 	for _, kw := range keywords {
-		total, res, err := idx.Search(nil, kw.Keyword, 1, 10)
+		total, res, langs, err := idx.Search(nil, "", kw.Keyword, 1, 10)
 		assert.NoError(t, err)
 		assert.EqualValues(t, len(kw.IDs), total)
 
+		assert.NotNil(t, langs)
+		assert.Len(t, langs, kw.Langs)
+
 		var ids = make([]int64, 0, len(res))
 		for _, hit := range res {
 			ids = append(ids, hit.RepoID)

modules/indexer/code/indexer.go

@@ -12,22 +12,34 @@ import (
 	"code.gitea.io/gitea/modules/graceful"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/timeutil"
 )
 
 // SearchResult result of performing a search in a repo
 type SearchResult struct {
-	RepoID     int64
-	StartIndex int
-	EndIndex   int
-	Filename   string
-	Content    string
+	RepoID      int64
+	StartIndex  int
+	EndIndex    int
+	Filename    string
+	Content     string
+	CommitID    string
+	UpdatedUnix timeutil.TimeStamp
+	Language    string
+	Color       string
+}
+
+// SearchResultLanguages result of top languages count in search results
+type SearchResultLanguages struct {
+	Language string
+	Color    string
+	Count    int
 }
 
 // Indexer defines an interface to indexer issues contents
 type Indexer interface {
 	Index(repoID int64) error
 	Delete(repoID int64) error
-	Search(repoIDs []int64, keyword string, page, pageSize int) (int64, []*SearchResult, error)
+	Search(repoIDs []int64, language, keyword string, page, pageSize int) (int64, []*SearchResult, []*SearchResultLanguages, error)
 	Close()
 }
 

modules/indexer/code/search.go

@@ -11,6 +11,7 @@ import (
 	"strings"
 
 	"code.gitea.io/gitea/modules/highlight"
+	"code.gitea.io/gitea/modules/timeutil"
 	"code.gitea.io/gitea/modules/util"
 )
 
@@ -18,6 +19,10 @@ import (
 type Result struct {
 	RepoID         int64
 	Filename       string
+	CommitID       string
+	UpdatedUnix    timeutil.TimeStamp
+	Language       string
+	Color          string
 	HighlightClass string
 	LineNumbers    []int
 	FormattedLines gotemplate.HTML
@@ -100,6 +105,10 @@ func searchResult(result *SearchResult, startIndex, endIndex int) (*Result, erro
 	return &Result{
 		RepoID:         result.RepoID,
 		Filename:       result.Filename,
+		CommitID:       result.CommitID,
+		UpdatedUnix:    result.UpdatedUnix,
+		Language:       result.Language,
+		Color:          result.Color,
 		HighlightClass: highlight.FileNameToHighlightClass(result.Filename),
 		LineNumbers:    lineNumbers,
 		FormattedLines: gotemplate.HTML(formattedLinesBuffer.String()),
@@ -107,14 +116,14 @@ func searchResult(result *SearchResult, startIndex, endIndex int) (*Result, erro
 }
 
 // PerformSearch perform a search on a repository
-func PerformSearch(repoIDs []int64, keyword string, page, pageSize int) (int, []*Result, error) {
+func PerformSearch(repoIDs []int64, language, keyword string, page, pageSize int) (int, []*Result, []*SearchResultLanguages, error) {
 	if len(keyword) == 0 {
-		return 0, nil, nil
+		return 0, nil, nil, nil
 	}
 
-	total, results, err := indexer.Search(repoIDs, keyword, page, pageSize)
+	total, results, resultLanguages, err := indexer.Search(repoIDs, language, keyword, page, pageSize)
 	if err != nil {
-		return 0, nil, err
+		return 0, nil, nil, err
 	}
 
 	displayResults := make([]*Result, len(results))
@@ -123,8 +132,8 @@ func PerformSearch(repoIDs []int64, keyword string, page, pageSize int) (int, []
 		startIndex, endIndex := indices(result.Content, result.StartIndex, result.EndIndex)
 		displayResults[i], err = searchResult(result, startIndex, endIndex)
 		if err != nil {
-			return 0, nil, err
+			return 0, nil, nil, err
 		}
 	}
-	return int(total), displayResults, nil
+	return int(total), displayResults, resultLanguages, nil
 }

modules/indexer/code/wrapped.go

@@ -71,12 +71,12 @@ func (w *wrappedIndexer) Delete(repoID int64) error {
 	return indexer.Delete(repoID)
 }
 
-func (w *wrappedIndexer) Search(repoIDs []int64, keyword string, page, pageSize int) (int64, []*SearchResult, error) {
+func (w *wrappedIndexer) Search(repoIDs []int64, language, keyword string, page, pageSize int) (int64, []*SearchResult, []*SearchResultLanguages, error) {
 	indexer, err := w.get()
 	if err != nil {
-		return 0, nil, err
+		return 0, nil, nil, err
 	}
-	return indexer.Search(repoIDs, keyword, page, pageSize)
+	return indexer.Search(repoIDs, language, keyword, page, pageSize)
 
 }
 

modules/setting/indexer.go

@@ -41,6 +41,7 @@ var (
 		MaxIndexerFileSize int64
 		IncludePatterns    []glob.Glob
 		ExcludePatterns    []glob.Glob
+		ExcludeVendored    bool
 	}{
 		IssueType:             "bleve",
 		IssuePath:             "indexers/issues.bleve",
@@ -52,6 +53,7 @@ var (
 		IssueQueueBatchNumber: 20,
 
 		MaxIndexerFileSize: 1024 * 1024,
+		ExcludeVendored:    true,
 	}
 )
 
@@ -77,6 +79,7 @@ func newIndexerService() {
 	}
 	Indexer.IncludePatterns = IndexerGlobFromString(sec.Key("REPO_INDEXER_INCLUDE").MustString(""))
 	Indexer.ExcludePatterns = IndexerGlobFromString(sec.Key("REPO_INDEXER_EXCLUDE").MustString(""))
+	Indexer.ExcludeVendored = sec.Key("REPO_INDEXER_EXCLUDE_VENDORED").MustBool(true)
 	Indexer.UpdateQueueLength = sec.Key("UPDATE_BUFFER_LEN").MustInt(20)
 	Indexer.MaxIndexerFileSize = sec.Key("MAX_FILE_SIZE").MustInt64(1024 * 1024)
 	Indexer.StartupTimeout = sec.Key("STARTUP_TIMEOUT").MustDuration(30 * time.Second)

options/locale/locale_en-US.ini

@@ -215,6 +215,7 @@ user_no_results = No matching users found.
 org_no_results = No matching organizations found.
 code_no_results = No source code matching your search term found.
 code_search_results = Search results for '%s'
+code_last_indexed_at = Last indexed %s
 
 [auth]
 create_new_account = Register Account

routers/home.go

@@ -290,6 +290,7 @@ func ExploreCode(ctx *context.Context) {
 	ctx.Data["PageIsExplore"] = true
 	ctx.Data["PageIsExploreCode"] = true
 
+	language := strings.TrimSpace(ctx.Query("l"))
 	keyword := strings.TrimSpace(ctx.Query("q"))
 	page := ctx.QueryInt("page")
 	if page <= 0 {
@@ -317,8 +318,9 @@ func ExploreCode(ctx *context.Context) {
 	}
 
 	var (
-		total         int
-		searchResults []*code_indexer.Result
+		total                 int
+		searchResults         []*code_indexer.Result
+		searchResultLanguages []*code_indexer.SearchResultLanguages
 	)
 
 	// if non-admin login user, we need check UnitTypeCode at first
@@ -340,14 +342,14 @@ func ExploreCode(ctx *context.Context) {
 
 		ctx.Data["RepoMaps"] = rightRepoMap
 
-		total, searchResults, err = code_indexer.PerformSearch(repoIDs, keyword, page, setting.UI.RepoSearchPagingNum)
+		total, searchResults, searchResultLanguages, err = code_indexer.PerformSearch(repoIDs, language, keyword, page, setting.UI.RepoSearchPagingNum)
 		if err != nil {
 			ctx.ServerError("SearchResults", err)
 			return
 		}
 		// if non-login user or isAdmin, no need to check UnitTypeCode
 	} else if (ctx.User == nil && len(repoIDs) > 0) || isAdmin {
-		total, searchResults, err = code_indexer.PerformSearch(repoIDs, keyword, page, setting.UI.RepoSearchPagingNum)
+		total, searchResults, searchResultLanguages, err = code_indexer.PerformSearch(repoIDs, language, keyword, page, setting.UI.RepoSearchPagingNum)
 		if err != nil {
 			ctx.ServerError("SearchResults", err)
 			return
@@ -377,12 +379,15 @@ func ExploreCode(ctx *context.Context) {
 	}
 
 	ctx.Data["Keyword"] = keyword
+	ctx.Data["Language"] = language
 	ctx.Data["SearchResults"] = searchResults
+	ctx.Data["SearchResultLanguages"] = searchResultLanguages
 	ctx.Data["RequireHighlightJS"] = true
 	ctx.Data["PageIsViewCode"] = true
 
 	pager := context.NewPagination(total, setting.UI.RepoSearchPagingNum, page, 5)
 	pager.SetDefaultParams(ctx)
+	pager.AddParam(ctx, "l", "Language")
 	ctx.Data["Page"] = pager
 
 	ctx.HTML(200, tplExploreCode)

routers/repo/search.go

@@ -22,26 +22,30 @@ func Search(ctx *context.Context) {
 		ctx.Redirect(ctx.Repo.RepoLink, 302)
 		return
 	}
+	language := strings.TrimSpace(ctx.Query("l"))
 	keyword := strings.TrimSpace(ctx.Query("q"))
 	page := ctx.QueryInt("page")
 	if page <= 0 {
 		page = 1
 	}
-	total, searchResults, err := code_indexer.PerformSearch([]int64{ctx.Repo.Repository.ID},
-		keyword, page, setting.UI.RepoSearchPagingNum)
+	total, searchResults, searchResultLanguages, err := code_indexer.PerformSearch([]int64{ctx.Repo.Repository.ID},
+		language, keyword, page, setting.UI.RepoSearchPagingNum)
 	if err != nil {
 		ctx.ServerError("SearchResults", err)
 		return
 	}
 	ctx.Data["Keyword"] = keyword
+	ctx.Data["Language"] = language
 	ctx.Data["SourcePath"] = setting.AppSubURL + "/" +
-		path.Join(ctx.Repo.Repository.Owner.Name, ctx.Repo.Repository.Name, "src", "branch", ctx.Repo.Repository.DefaultBranch)
+		path.Join(ctx.Repo.Repository.Owner.Name, ctx.Repo.Repository.Name)
 	ctx.Data["SearchResults"] = searchResults
+	ctx.Data["SearchResultLanguages"] = searchResultLanguages
 	ctx.Data["RequireHighlightJS"] = true
 	ctx.Data["PageIsViewCode"] = true
 
 	pager := context.NewPagination(total, setting.UI.RepoSearchPagingNum, page, 5)
 	pager.SetDefaultParams(ctx)
+	pager.AddParam(ctx, "l", "Language")
 	ctx.Data["Page"] = pager
 
 	ctx.HTML(200, tplSearch)

templates/explore/code.tmpl

@@ -16,13 +16,22 @@
                 <h3>
                     {{.i18n.Tr "explore.code_search_results" (.Keyword|Escape) | Str2html }}
                 </h3>
+				<div>
+					{{range $term := .SearchResultLanguages}}
+					<a class="ui {{if eq $.Language $term.Language}}primary {{end}}basic label" href="{{$.AppSubURL}}/explore/code?q={{$.Keyword}}{{if ne $.Language $term.Language}}&l={{$term.Language}}{{end}}">
+						<i class="color-icon" style="background-color: {{$term.Color}}"></i>
+						{{$term.Language}}
+						<div class="detail">{{$term.Count}}</div>
+					</a>
+					{{end}}
+				</div>
                 <div class="repository search">
                     {{range $result := .SearchResults}}
                         {{$repo := (index $.RepoMaps .RepoID)}}
                         <div class="diff-file-box diff-box file-content non-diff-file-content repo-search-result">
                             <h4 class="ui top attached normal header">
                                 <span class="file"><a rel="nofollow" href="{{EscapePound $repo.HTMLURL}}">{{$repo.FullName}}</a> - {{.Filename}}</span>
-                                <a class="ui basic grey tiny button" rel="nofollow" href="{{EscapePound $repo.HTMLURL}}/src/branch/{{$repo.DefaultBranch}}/{{EscapePound .Filename}}">{{$.i18n.Tr "repo.diff.view_file"}}</a>
+                                <a class="ui basic grey tiny button" rel="nofollow" href="{{EscapePound $repo.HTMLURL}}/src/commit/{{$result.CommitID}}/{{EscapePound .Filename}}">{{$.i18n.Tr "repo.diff.view_file"}}</a>
                             </h4>
                             <div class="ui attached table segment">
                                 <div class="file-body file-code code-view">
@@ -31,7 +40,7 @@
                                             <tr>
                                                 <td class="lines-num">
                                                     {{range .LineNumbers}}
-                                                        <a href="{{EscapePound $repo.HTMLURL}}/src/branch/{{$repo.DefaultBranch}}/{{EscapePound $result.Filename}}#L{{.}}"><span>{{.}}</span></a>
+                                                        <a href="{{EscapePound $repo.HTMLURL}}/src/commit/{{$result.CommitID}}/{{EscapePound $result.Filename}}#L{{.}}"><span>{{.}}</span></a>
                                                     {{end}}
                                                 </td>
                                                 <td class="lines-code"><pre><code class="{{.HighlightClass}}"><ol class="linenums">{{.FormattedLines}}</ol></code></pre></td>
@@ -40,6 +49,15 @@
                                     </table>
                                 </div>
                             </div>
+							<div class="ui bottom attached table segment">
+                                {{if $result.Language}}
+								<i class="color-icon" style="background-color: {{$result.Color}}"></i>{{$result.Language}}
+                                {{end}}
+                                &nbsp;
+								{{if not $result.UpdatedUnix.IsZero}}
+								<span class="ui small grey text pull right">{{$.i18n.Tr "explore.code_last_indexed_at" (TimeSinceUnix $result.UpdatedUnix $.i18n.Lang) | Safe}} &nbsp;</span>
+								{{end}}
+							</div>
                         </div>
                     {{end}}
                 </div>

templates/repo/search.tmpl

@@ -16,12 +16,21 @@
 			<h3>
 				{{.i18n.Tr "repo.search.results" (.Keyword|Escape) .RepoLink .RepoName | Str2html }}
 			</h3>
+			<div>
+				{{range $term := .SearchResultLanguages}}
+				<a class="ui {{if eq $.Language $term.Language}}primary {{end}}basic label" href="{{EscapePound $.SourcePath}}/search?q={{$.Keyword}}{{if ne $.Language $term.Language}}&l={{$term.Language}}{{end}}">
+					<i class="color-icon" style="background-color: {{$term.Color}}"></i>
+					{{$term.Language}}
+					<div class="detail">{{$term.Count}}</div>
+				</a>
+				{{end}}
+			</div>
 			<div class="repository search">
 				{{range $result := .SearchResults}}
 					<div class="diff-file-box diff-box file-content non-diff-file-content repo-search-result">
 						<h4 class="ui top attached normal header">
 							<span class="file">{{.Filename}}</span>
-							<a class="ui basic grey tiny button" rel="nofollow" href="{{EscapePound $.SourcePath}}/{{EscapePound .Filename}}">{{$.i18n.Tr "repo.diff.view_file"}}</a>
+							<a class="ui basic grey tiny button" rel="nofollow" href="{{EscapePound $.SourcePath}}/src/commit/{{$result.CommitID}}/{{EscapePound .Filename}}">{{$.i18n.Tr "repo.diff.view_file"}}</a>
 						</h4>
 						<div class="ui attached table segment">
 							<div class="file-body file-code code-view">
@@ -30,7 +39,7 @@
 										<tr>
 											<td class="lines-num">
 												{{range .LineNumbers}}
-													<a href="{{EscapePound $.SourcePath}}/{{EscapePound $result.Filename}}#L{{.}}"><span>{{.}}</span></a>
+													<a href="{{EscapePound $.SourcePath}}/src/commit/{{$result.CommitID}}/{{EscapePound $result.Filename}}#L{{.}}"><span>{{.}}</span></a>
 												{{end}}
 											</td>
 											<td class="lines-code"><pre><code class="{{.HighlightClass}}"><ol class="linenums">{{.FormattedLines}}</ol></code></pre></td>
@@ -39,6 +48,15 @@
 								</table>
 							</div>
 						</div>
+						<div class="ui bottom attached table segment">
+							{{if $result.Language}}
+							<i class="color-icon" style="background-color: {{$result.Color}}"></i>{{$result.Language}}
+							{{end}}
+							&nbsp;
+							{{if not $result.UpdatedUnix.IsZero}}
+							<span class="ui small grey text pull right">{{$.i18n.Tr "explore.code_last_indexed_at" (TimeSinceUnix $result.UpdatedUnix $.i18n.Lang) | Safe}} &nbsp;</span>
+							{{end}}
+						</div>
 					</div>
 				{{end}}
 			</div>

vendor/github.com/blevesearch/bleve/analysis/analyzer/keyword/keyword.go

@@ -0,0 +1,38 @@
+//  Copyright (c) 2014 Couchbase, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 		http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package keyword
+
+import (
+	"github.com/blevesearch/bleve/analysis"
+	"github.com/blevesearch/bleve/analysis/tokenizer/single"
+	"github.com/blevesearch/bleve/registry"
+)
+
+const Name = "keyword"
+
+func AnalyzerConstructor(config map[string]interface{}, cache *registry.Cache) (*analysis.Analyzer, error) {
+	keywordTokenizer, err := cache.TokenizerNamed(single.Name)
+	if err != nil {
+		return nil, err
+	}
+	rv := analysis.Analyzer{
+		Tokenizer: keywordTokenizer,
+	}
+	return &rv, nil
+}
+
+func init() {
+	registry.RegisterAnalyzer(Name, AnalyzerConstructor)
+}

vendor/github.com/blevesearch/bleve/analysis/tokenizer/single/single.go

@@ -0,0 +1,49 @@
+//  Copyright (c) 2014 Couchbase, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 		http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package single
+
+import (
+	"github.com/blevesearch/bleve/analysis"
+	"github.com/blevesearch/bleve/registry"
+)
+
+const Name = "single"
+
+type SingleTokenTokenizer struct {
+}
+
+func NewSingleTokenTokenizer() *SingleTokenTokenizer {
+	return &SingleTokenTokenizer{}
+}
+
+func (t *SingleTokenTokenizer) Tokenize(input []byte) analysis.TokenStream {
+	return analysis.TokenStream{
+		&analysis.Token{
+			Term:     input,
+			Position: 1,
+			Start:    0,
+			End:      len(input),
+			Type:     analysis.AlphaNumeric,
+		},
+	}
+}
+
+func SingleTokenTokenizerConstructor(config map[string]interface{}, cache *registry.Cache) (analysis.Tokenizer, error) {
+	return NewSingleTokenTokenizer(), nil
+}
+
+func init() {
+	registry.RegisterTokenizer(Name, SingleTokenTokenizerConstructor)
+}

vendor/modules.txt

@@ -54,6 +54,7 @@ github.com/beorn7/perks/quantile
 github.com/blevesearch/bleve
 github.com/blevesearch/bleve/analysis
 github.com/blevesearch/bleve/analysis/analyzer/custom
+github.com/blevesearch/bleve/analysis/analyzer/keyword
 github.com/blevesearch/bleve/analysis/analyzer/standard
 github.com/blevesearch/bleve/analysis/datetime/flexible
 github.com/blevesearch/bleve/analysis/datetime/optional
@@ -62,6 +63,7 @@ github.com/blevesearch/bleve/analysis/token/lowercase
 github.com/blevesearch/bleve/analysis/token/porter
 github.com/blevesearch/bleve/analysis/token/stop
 github.com/blevesearch/bleve/analysis/token/unicodenorm
+github.com/blevesearch/bleve/analysis/tokenizer/single
 github.com/blevesearch/bleve/analysis/tokenizer/unicode
 github.com/blevesearch/bleve/document
 github.com/blevesearch/bleve/geo

web_src/less/_base.less

@@ -1193,6 +1193,10 @@ i.icon.centerlock {
     border-radius: 500em;
 }
 
+.ui.label > .color-icon {
+    margin-left: 0;
+}
+
 .invisible {
     visibility: hidden;
 }

web_src/less/_repository.less

@@ -1502,6 +1502,11 @@
 
             clear: right;
         }
+
+        .ui.bottom.attached.table.segment {
+            padding-top: 5px;
+            padding-bottom: 5px;
+        }
     }
 
     .diff-stats {