1 files changed, 251 insertions, 0 deletions
diff --git a/routers/web/repo/blame.go b/routers/web/repo/blame.go
new file mode 100644
index 0000000000..1a3e1dcb9c
--- /dev/null
+++ b/routers/web/repo/blame.go
@@ -0,0 +1,251 @@
+// Copyright 2019 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 repo
+
+import (
+	"bytes"
+	"container/list"
+	"fmt"
+	"html"
+	gotemplate "html/template"
+	"net/http"
+	"strings"
+
+	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/base"
+	"code.gitea.io/gitea/modules/context"
+	"code.gitea.io/gitea/modules/git"
+	"code.gitea.io/gitea/modules/highlight"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/templates"
+	"code.gitea.io/gitea/modules/timeutil"
+)
+
+const (
+	tplBlame base.TplName = "repo/home"
+)
+
+// RefBlame render blame page
+func RefBlame(ctx *context.Context) {
+	fileName := ctx.Repo.TreePath
+	if len(fileName) == 0 {
+		ctx.NotFound("Blame FileName", nil)
+		return
+	}
+
+	userName := ctx.Repo.Owner.Name
+	repoName := ctx.Repo.Repository.Name
+	commitID := ctx.Repo.CommitID
+
+	commit, err := ctx.Repo.GitRepo.GetCommit(commitID)
+	if err != nil {
+		if git.IsErrNotExist(err) {
+			ctx.NotFound("Repo.GitRepo.GetCommit", err)
+		} else {
+			ctx.ServerError("Repo.GitRepo.GetCommit", err)
+		}
+		return
+	}
+	if len(commitID) != 40 {
+		commitID = commit.ID.String()
+	}
+
+	branchLink := ctx.Repo.RepoLink + "/src/" + ctx.Repo.BranchNameSubURL()
+	treeLink := branchLink
+	rawLink := ctx.Repo.RepoLink + "/raw/" + ctx.Repo.BranchNameSubURL()
+
+	if len(ctx.Repo.TreePath) > 0 {
+		treeLink += "/" + ctx.Repo.TreePath
+	}
+
+	var treeNames []string
+	paths := make([]string, 0, 5)
+	if len(ctx.Repo.TreePath) > 0 {
+		treeNames = strings.Split(ctx.Repo.TreePath, "/")
+		for i := range treeNames {
+			paths = append(paths, strings.Join(treeNames[:i+1], "/"))
+		}
+
+		ctx.Data["HasParentPath"] = true
+		if len(paths)-2 >= 0 {
+			ctx.Data["ParentPath"] = "/" + paths[len(paths)-1]
+		}
+	}
+
+	// Show latest commit info of repository in table header,
+	// or of directory if not in root directory.
+	latestCommit := ctx.Repo.Commit
+	if len(ctx.Repo.TreePath) > 0 {
+		latestCommit, err = ctx.Repo.Commit.GetCommitByPath(ctx.Repo.TreePath)
+		if err != nil {
+			ctx.ServerError("GetCommitByPath", err)
+			return
+		}
+	}
+	ctx.Data["LatestCommit"] = latestCommit
+	ctx.Data["LatestCommitVerification"] = models.ParseCommitWithSignature(latestCommit)
+	ctx.Data["LatestCommitUser"] = models.ValidateCommitWithEmail(latestCommit)
+
+	statuses, err := models.GetLatestCommitStatus(ctx.Repo.Repository.ID, ctx.Repo.Commit.ID.String(), models.ListOptions{})
+	if err != nil {
+		log.Error("GetLatestCommitStatus: %v", err)
+	}
+
+	// Get current entry user currently looking at.
+	entry, err := ctx.Repo.Commit.GetTreeEntryByPath(ctx.Repo.TreePath)
+	if err != nil {
+		ctx.NotFoundOrServerError("Repo.Commit.GetTreeEntryByPath", git.IsErrNotExist, err)
+		return
+	}
+
+	blob := entry.Blob()
+
+	ctx.Data["LatestCommitStatus"] = models.CalcCommitStatus(statuses)
+	ctx.Data["LatestCommitStatuses"] = statuses
+
+	ctx.Data["Paths"] = paths
+	ctx.Data["TreeLink"] = treeLink
+	ctx.Data["TreeNames"] = treeNames
+	ctx.Data["BranchLink"] = branchLink
+
+	ctx.Data["RawFileLink"] = rawLink + "/" + ctx.Repo.TreePath
+	ctx.Data["PageIsViewCode"] = true
+
+	ctx.Data["IsBlame"] = true
+
+	ctx.Data["FileSize"] = blob.Size()
+	ctx.Data["FileName"] = blob.Name()
+
+	ctx.Data["NumLines"], err = blob.GetBlobLineCount()
+	if err != nil {
+		ctx.NotFound("GetBlobLineCount", err)
+		return
+	}
+
+	blameReader, err := git.CreateBlameReader(ctx, models.RepoPath(userName, repoName), commitID, fileName)
+	if err != nil {
+		ctx.NotFound("CreateBlameReader", err)
+		return
+	}
+	defer blameReader.Close()
+
+	blameParts := make([]git.BlamePart, 0)
+
+	for {
+		blamePart, err := blameReader.NextPart()
+		if err != nil {
+			ctx.NotFound("NextPart", err)
+			return
+		}
+		if blamePart == nil {
+			break
+		}
+		blameParts = append(blameParts, *blamePart)
+	}
+
+	commitNames := make(map[string]models.UserCommit)
+	commits := list.New()
+
+	for _, part := range blameParts {
+		sha := part.Sha
+		if _, ok := commitNames[sha]; ok {
+			continue
+		}
+
+		commit, err := ctx.Repo.GitRepo.GetCommit(sha)
+		if err != nil {
+			if git.IsErrNotExist(err) {
+				ctx.NotFound("Repo.GitRepo.GetCommit", err)
+			} else {
+				ctx.ServerError("Repo.GitRepo.GetCommit", err)
+			}
+			return
+		}
+
+		commits.PushBack(commit)
+
+		commitNames[commit.ID.String()] = models.UserCommit{}
+	}
+
+	commits = models.ValidateCommitsWithEmails(commits)
+
+	for e := commits.Front(); e != nil; e = e.Next() {
+		c := e.Value.(models.UserCommit)
+
+		commitNames[c.ID.String()] = c
+	}
+
+	// Get Topics of this repo
+	renderRepoTopics(ctx)
+	if ctx.Written() {
+		return
+	}
+
+	renderBlame(ctx, blameParts, commitNames)
+
+	ctx.HTML(http.StatusOK, tplBlame)
+}
+
+func renderBlame(ctx *context.Context, blameParts []git.BlamePart, commitNames map[string]models.UserCommit) {
+	repoLink := ctx.Repo.RepoLink
+
+	var lines = make([]string, 0)
+
+	var commitInfo bytes.Buffer
+	var lineNumbers bytes.Buffer
+	var codeLines bytes.Buffer
+
+	var i = 0
+	for pi, part := range blameParts {
+		for index, line := range part.Lines {
+			i++
+			lines = append(lines, line)
+
+			var attr = ""
+			if len(part.Lines)-1 == index && len(blameParts)-1 != pi {
+				attr = " bottom-line"
+			}
+			commit := commitNames[part.Sha]
+			if index == 0 {
+				// User avatar image
+				commitSince := timeutil.TimeSinceUnix(timeutil.TimeStamp(commit.Author.When.Unix()), ctx.Data["Lang"].(string))
+
+				var avatar string
+				if commit.User != nil {
+					avatar = string(templates.Avatar(commit.User, 18, "mr-3"))
+				} else {
+					avatar = string(templates.AvatarByEmail(commit.Author.Email, commit.Author.Name, 18, "mr-3"))
+				}
+
+				commitInfo.WriteString(fmt.Sprintf(`<div class="blame-info%s"><div class="blame-data"><div class="blame-avatar">%s</div><div class="blame-message"><a href="%s/commit/%s" title="%[5]s">%[5]s</a></div><div class="blame-time">%s</div></div></div>`, attr, avatar, repoLink, part.Sha, html.EscapeString(commit.CommitMessage), commitSince))
+			} else {
+				commitInfo.WriteString(fmt.Sprintf(`<div class="blame-info%s">&#8203;</div>`, attr))
+			}
+
+			//Line number
+			if len(part.Lines)-1 == index && len(blameParts)-1 != pi {
+				lineNumbers.WriteString(fmt.Sprintf(`<span id="L%d" data-line-number="%d" class="bottom-line"></span>`, i, i))
+			} else {
+				lineNumbers.WriteString(fmt.Sprintf(`<span id="L%d" data-line-number="%d"></span>`, i, i))
+			}
+
+			if i != len(lines)-1 {
+				line += "\n"
+			}
+			fileName := fmt.Sprintf("%v", ctx.Data["FileName"])
+			line = highlight.Code(fileName, line)
+			line = `<code class="code-inner">` + line + `</code>`
+			if len(part.Lines)-1 == index && len(blameParts)-1 != pi {
+				codeLines.WriteString(fmt.Sprintf(`<li class="L%d bottom-line" rel="L%d">%s</li>`, i, i, line))
+			} else {
+				codeLines.WriteString(fmt.Sprintf(`<li class="L%d" rel="L%d">%s</li>`, i, i, line))
+			}
+		}
+	}
+
+	ctx.Data["BlameContent"] = gotemplate.HTML(codeLines.String())
+	ctx.Data["BlameCommitInfo"] = gotemplate.HTML(commitInfo.String())
+	ctx.Data["BlameLineNums"] = gotemplate.HTML(lineNumbers.String())
+}