Merge pull request '[v7.0/forgejo] Render inline file permalinks' (#2951) from earl-warren/forgejo:wip-v7.0-inline-render into v7.0/forgejo

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/2951
This commit is contained in:
Earl Warren 2024-04-02 09:57:35 +00:00
commit 59e42fee1c
25 changed files with 577 additions and 4 deletions

View file

@ -2338,6 +2338,8 @@ LEVEL = Info
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Set the maximum number of characters in a mermaid source. (Set to -1 to disable limits)
;MERMAID_MAX_SOURCE_CHARACTERS = 5000
;; Set the maximum number of lines allowed for a filepreview. (Set to -1 to disable limits; set to 0 to disable the feature)
;FILEPREVIEW_MAX_LINES = 50
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

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@ -0,0 +1,323 @@
// Copyright The Forgejo Authors.
// SPDX-License-Identifier: MIT
package markup
import (
"bufio"
"bytes"
"html/template"
"regexp"
"slices"
"strconv"
"strings"
"code.gitea.io/gitea/modules/charset"
"code.gitea.io/gitea/modules/highlight"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/translation"
"golang.org/x/net/html"
"golang.org/x/net/html/atom"
)
// filePreviewPattern matches "http://domain/org/repo/src/commit/COMMIT/filepath#L1-L2"
var filePreviewPattern = regexp.MustCompile(`https?://((?:\S+/){3})src/commit/([0-9a-f]{4,64})/(\S+)#(L\d+(?:-L\d+)?)`)
type FilePreview struct {
fileContent []template.HTML
subTitle template.HTML
lineOffset int
urlFull string
filePath string
start int
end int
isTruncated bool
}
func NewFilePreview(ctx *RenderContext, node *html.Node, locale translation.Locale) *FilePreview {
if setting.FilePreviewMaxLines == 0 {
// Feature is disabled
return nil
}
preview := &FilePreview{}
m := filePreviewPattern.FindStringSubmatchIndex(node.Data)
if m == nil {
return nil
}
// Ensure that every group has a match
if slices.Contains(m, -1) {
return nil
}
preview.urlFull = node.Data[m[0]:m[1]]
// Ensure that we only use links to local repositories
if !strings.HasPrefix(preview.urlFull, setting.AppURL+setting.AppSubURL) {
return nil
}
projPath := strings.TrimSuffix(node.Data[m[2]:m[3]], "/")
commitSha := node.Data[m[4]:m[5]]
preview.filePath = node.Data[m[6]:m[7]]
hash := node.Data[m[8]:m[9]]
preview.start = m[0]
preview.end = m[1]
projPathSegments := strings.Split(projPath, "/")
var language string
fileBlob, err := DefaultProcessorHelper.GetRepoFileBlob(
ctx.Ctx,
projPathSegments[len(projPathSegments)-2],
projPathSegments[len(projPathSegments)-1],
commitSha, preview.filePath,
&language,
)
if err != nil {
return nil
}
lineSpecs := strings.Split(hash, "-")
commitLinkBuffer := new(bytes.Buffer)
err = html.Render(commitLinkBuffer, createLink(node.Data[m[0]:m[5]], commitSha[0:7], "text black"))
if err != nil {
log.Error("failed to render commitLink: %v", err)
}
var startLine, endLine int
if len(lineSpecs) == 1 {
startLine, _ = strconv.Atoi(strings.TrimPrefix(lineSpecs[0], "L"))
endLine = startLine
preview.subTitle = locale.Tr(
"markup.filepreview.line", startLine,
template.HTML(commitLinkBuffer.String()),
)
preview.lineOffset = startLine - 1
} else {
startLine, _ = strconv.Atoi(strings.TrimPrefix(lineSpecs[0], "L"))
endLine, _ = strconv.Atoi(strings.TrimPrefix(lineSpecs[1], "L"))
preview.subTitle = locale.Tr(
"markup.filepreview.lines", startLine, endLine,
template.HTML(commitLinkBuffer.String()),
)
preview.lineOffset = startLine - 1
}
lineCount := endLine - (startLine - 1)
if startLine < 1 || endLine < 1 || lineCount < 1 {
return nil
}
if setting.FilePreviewMaxLines > 0 && lineCount > setting.FilePreviewMaxLines {
preview.isTruncated = true
lineCount = setting.FilePreviewMaxLines
}
dataRc, err := fileBlob.DataAsync()
if err != nil {
return nil
}
defer dataRc.Close()
reader := bufio.NewReader(dataRc)
// skip all lines until we find our startLine
for i := 1; i < startLine; i++ {
_, err := reader.ReadBytes('\n')
if err != nil {
return nil
}
}
// capture the lines we're interested in
lineBuffer := new(bytes.Buffer)
for i := 0; i < lineCount; i++ {
buf, err := reader.ReadBytes('\n')
if err != nil {
break
}
lineBuffer.Write(buf)
}
// highlight the file...
fileContent, _, err := highlight.File(fileBlob.Name(), language, lineBuffer.Bytes())
if err != nil {
log.Error("highlight.File failed, fallback to plain text: %v", err)
fileContent = highlight.PlainText(lineBuffer.Bytes())
}
preview.fileContent = fileContent
return preview
}
func (p *FilePreview) CreateHTML(locale translation.Locale) *html.Node {
table := &html.Node{
Type: html.ElementNode,
Data: atom.Table.String(),
Attr: []html.Attribute{{Key: "class", Val: "file-preview"}},
}
tbody := &html.Node{
Type: html.ElementNode,
Data: atom.Tbody.String(),
}
status := &charset.EscapeStatus{}
statuses := make([]*charset.EscapeStatus, len(p.fileContent))
for i, line := range p.fileContent {
statuses[i], p.fileContent[i] = charset.EscapeControlHTML(line, locale, charset.FileviewContext)
status = status.Or(statuses[i])
}
for idx, code := range p.fileContent {
tr := &html.Node{
Type: html.ElementNode,
Data: atom.Tr.String(),
}
lineNum := strconv.Itoa(p.lineOffset + idx + 1)
tdLinesnum := &html.Node{
Type: html.ElementNode,
Data: atom.Td.String(),
Attr: []html.Attribute{
{Key: "class", Val: "lines-num"},
},
}
spanLinesNum := &html.Node{
Type: html.ElementNode,
Data: atom.Span.String(),
Attr: []html.Attribute{
{Key: "data-line-number", Val: lineNum},
},
}
tdLinesnum.AppendChild(spanLinesNum)
tr.AppendChild(tdLinesnum)
if status.Escaped {
tdLinesEscape := &html.Node{
Type: html.ElementNode,
Data: atom.Td.String(),
Attr: []html.Attribute{
{Key: "class", Val: "lines-escape"},
},
}
if statuses[idx].Escaped {
btnTitle := ""
if statuses[idx].HasInvisible {
btnTitle += locale.TrString("repo.invisible_runes_line") + " "
}
if statuses[idx].HasAmbiguous {
btnTitle += locale.TrString("repo.ambiguous_runes_line")
}
escapeBtn := &html.Node{
Type: html.ElementNode,
Data: atom.Button.String(),
Attr: []html.Attribute{
{Key: "class", Val: "toggle-escape-button btn interact-bg"},
{Key: "title", Val: btnTitle},
},
}
tdLinesEscape.AppendChild(escapeBtn)
}
tr.AppendChild(tdLinesEscape)
}
tdCode := &html.Node{
Type: html.ElementNode,
Data: atom.Td.String(),
Attr: []html.Attribute{
{Key: "class", Val: "lines-code chroma"},
},
}
codeInner := &html.Node{
Type: html.ElementNode,
Data: atom.Code.String(),
Attr: []html.Attribute{{Key: "class", Val: "code-inner"}},
}
codeText := &html.Node{
Type: html.RawNode,
Data: string(code),
}
codeInner.AppendChild(codeText)
tdCode.AppendChild(codeInner)
tr.AppendChild(tdCode)
tbody.AppendChild(tr)
}
table.AppendChild(tbody)
twrapper := &html.Node{
Type: html.ElementNode,
Data: atom.Div.String(),
Attr: []html.Attribute{{Key: "class", Val: "ui table"}},
}
twrapper.AppendChild(table)
header := &html.Node{
Type: html.ElementNode,
Data: atom.Div.String(),
Attr: []html.Attribute{{Key: "class", Val: "header"}},
}
afilepath := &html.Node{
Type: html.ElementNode,
Data: atom.A.String(),
Attr: []html.Attribute{
{Key: "href", Val: p.urlFull},
{Key: "class", Val: "muted"},
},
}
afilepath.AppendChild(&html.Node{
Type: html.TextNode,
Data: p.filePath,
})
header.AppendChild(afilepath)
psubtitle := &html.Node{
Type: html.ElementNode,
Data: atom.Span.String(),
Attr: []html.Attribute{{Key: "class", Val: "text small grey"}},
}
psubtitle.AppendChild(&html.Node{
Type: html.RawNode,
Data: string(p.subTitle),
})
header.AppendChild(psubtitle)
node := &html.Node{
Type: html.ElementNode,
Data: atom.Div.String(),
Attr: []html.Attribute{{Key: "class", Val: "file-preview-box"}},
}
node.AppendChild(header)
if p.isTruncated {
warning := &html.Node{
Type: html.ElementNode,
Data: atom.Div.String(),
Attr: []html.Attribute{{Key: "class", Val: "ui warning message tw-text-left"}},
}
warning.AppendChild(&html.Node{
Type: html.TextNode,
Data: locale.TrString("markup.filepreview.truncated"),
})
node.AppendChild(warning)
}
node.AppendChild(twrapper)
return node
}

View file

@ -171,6 +171,7 @@ type processor func(ctx *RenderContext, node *html.Node)
var defaultProcessors = []processor{
fullIssuePatternProcessor,
comparePatternProcessor,
filePreviewPatternProcessor,
fullHashPatternProcessor,
shortLinkProcessor,
linkProcessor,
@ -1054,6 +1055,47 @@ func comparePatternProcessor(ctx *RenderContext, node *html.Node) {
}
}
func filePreviewPatternProcessor(ctx *RenderContext, node *html.Node) {
if ctx.Metas == nil {
return
}
if DefaultProcessorHelper.GetRepoFileBlob == nil {
return
}
next := node.NextSibling
for node != nil && node != next {
locale, ok := ctx.Ctx.Value(translation.ContextKey).(translation.Locale)
if !ok {
locale = translation.NewLocale("en-US")
}
preview := NewFilePreview(ctx, node, locale)
if preview == nil {
return
}
previewNode := preview.CreateHTML(locale)
// Specialized version of replaceContent, so the parent paragraph element is not destroyed from our div
before := node.Data[:preview.start]
after := node.Data[preview.end:]
node.Data = before
nextSibling := node.NextSibling
node.Parent.InsertBefore(&html.Node{
Type: html.RawNode,
Data: "</p>",
}, nextSibling)
node.Parent.InsertBefore(previewNode, nextSibling)
node.Parent.InsertBefore(&html.Node{
Type: html.RawNode,
Data: "<p>" + after,
}, nextSibling)
node = node.NextSibling
}
}
// emojiShortCodeProcessor for rendering text like :smile: into emoji
func emojiShortCodeProcessor(ctx *RenderContext, node *html.Node) {
start := 0

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@ -17,9 +17,11 @@ import (
"code.gitea.io/gitea/modules/markup"
"code.gitea.io/gitea/modules/markup/markdown"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/translation"
"code.gitea.io/gitea/modules/util"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
var localMetas = map[string]string{
@ -676,3 +678,68 @@ func TestIssue18471(t *testing.T) {
assert.NoError(t, err)
assert.Equal(t, "<a href=\"http://domain/org/repo/compare/783b039...da951ce\" class=\"compare\"><code class=\"nohighlight\">783b039...da951ce</code></a>", res.String())
}
func TestRender_FilePreview(t *testing.T) {
setting.StaticRootPath = "../../"
setting.Names = []string{"english"}
setting.Langs = []string{"en-US"}
translation.InitLocales(context.Background())
setting.AppURL = markup.TestAppURL
markup.Init(&markup.ProcessorHelper{
GetRepoFileBlob: func(ctx context.Context, ownerName, repoName, commitSha, filePath string, language *string) (*git.Blob, error) {
gitRepo, err := git.OpenRepository(git.DefaultContext, "./tests/repo/repo1_filepreview")
require.NoError(t, err)
defer gitRepo.Close()
commit, err := gitRepo.GetCommit("HEAD")
require.NoError(t, err)
blob, err := commit.GetBlobByPath("path/to/file.go")
require.NoError(t, err)
return blob, nil
},
})
sha := "190d9492934af498c3f669d6a2431dc5459e5b20"
commitFilePreview := util.URLJoin(markup.TestRepoURL, "src", "commit", sha, "path", "to", "file.go") + "#L2-L3"
test := func(input, expected string) {
buffer, err := markup.RenderString(&markup.RenderContext{
Ctx: git.DefaultContext,
RelativePath: ".md",
Metas: localMetas,
}, input)
assert.NoError(t, err)
assert.Equal(t, strings.TrimSpace(expected), strings.TrimSpace(buffer))
}
test(
commitFilePreview,
`<p></p>`+
`<div class="file-preview-box">`+
`<div class="header">`+
`<a href="http://localhost:3000/gogits/gogs/src/commit/190d9492934af498c3f669d6a2431dc5459e5b20/path/to/file.go#L2-L3" class="muted" rel="nofollow">path/to/file.go</a>`+
`<span class="text small grey">`+
`Lines 2 to 3 in <a href="http://localhost:3000/gogits/gogs/src/commit/190d9492934af498c3f669d6a2431dc5459e5b20" class="text black" rel="nofollow">190d949</a>`+
`</span>`+
`</div>`+
`<div class="ui table">`+
`<table class="file-preview">`+
`<tbody>`+
`<tr>`+
`<td class="lines-num"><span data-line-number="2"></span></td>`+
`<td class="lines-code chroma"><code class="code-inner"><span class="nx">B</span>`+"\n"+`</code></td>`+
`</tr>`+
`<tr>`+
`<td class="lines-num"><span data-line-number="3"></span></td>`+
`<td class="lines-code chroma"><code class="code-inner"><span class="nx">C</span>`+"\n"+`</code></td>`+
`</tr>`+
`</tbody>`+
`</table>`+
`</div>`+
`</div>`+
`<p></p>`,
)
}

View file

@ -31,6 +31,7 @@ const (
type ProcessorHelper struct {
IsUsernameMentionable func(ctx context.Context, username string) bool
GetRepoFileBlob func(ctx context.Context, ownerName, repoName, commitSha, filePath string, language *string) (*git.Blob, error)
ElementDir string // the direction of the elements, eg: "ltr", "rtl", "auto", default to no direction attribute
}

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@ -113,6 +113,23 @@ func createDefaultPolicy() *bluemonday.Policy {
// Allow 'color' and 'background-color' properties for the style attribute on text elements.
policy.AllowStyles("color", "background-color").OnElements("span", "p")
// Allow classes for file preview links...
policy.AllowAttrs("class").Matching(regexp.MustCompile("^(lines-num|lines-code chroma)$")).OnElements("td")
policy.AllowAttrs("class").Matching(regexp.MustCompile("^code-inner$")).OnElements("code")
policy.AllowAttrs("class").Matching(regexp.MustCompile("^file-preview-box$")).OnElements("div")
policy.AllowAttrs("class").Matching(regexp.MustCompile("^ui table$")).OnElements("div")
policy.AllowAttrs("class").Matching(regexp.MustCompile("^header$")).OnElements("div")
policy.AllowAttrs("data-line-number").Matching(regexp.MustCompile("^[0-9]+$")).OnElements("span")
policy.AllowAttrs("class").Matching(regexp.MustCompile("^text small grey$")).OnElements("span")
policy.AllowAttrs("class").Matching(regexp.MustCompile("^file-preview*")).OnElements("table")
policy.AllowAttrs("class").Matching(regexp.MustCompile("^lines-escape$")).OnElements("td")
policy.AllowAttrs("class").Matching(regexp.MustCompile("^toggle-escape-button btn interact-bg$")).OnElements("button")
policy.AllowAttrs("title").OnElements("button")
policy.AllowAttrs("class").Matching(regexp.MustCompile("^ambiguous-code-point$")).OnElements("span")
policy.AllowAttrs("data-tooltip-content").OnElements("span")
policy.AllowAttrs("class").Matching(regexp.MustCompile("muted|(text black)")).OnElements("a")
policy.AllowAttrs("class").Matching(regexp.MustCompile("^ui warning message tw-text-left$")).OnElements("div")
// Allow generally safe attributes
generalSafeAttrs := []string{
"abbr", "accept", "accept-charset",

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@ -0,0 +1 @@
ref: refs/heads/master

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@ -0,0 +1,6 @@
[core]
repositoryformatversion = 0
filemode = true
bare = true
[remote "origin"]
url = /home/mai/projects/codeark/forgejo/forgejo/modules/markup/tests/repo/repo1_filepreview/../../__test_repo

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@ -0,0 +1 @@
Unnamed repository; edit this file 'description' to name the repository.

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@ -0,0 +1,6 @@
# git ls-files --others --exclude-from=.git/info/exclude
# Lines that start with '#' are comments.
# For a project mostly in C, the following would be a good set of
# exclude patterns (uncomment them if you want to use them):
# *.[oa]
# *~

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@ -0,0 +1 @@
x+)JMU06e040031QHËÌIÕKÏghQºÂ/TX'·7潊ç·såË#3ô

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@ -0,0 +1 @@
190d9492934af498c3f669d6a2431dc5459e5b20

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@ -15,6 +15,7 @@ var (
ExternalMarkupRenderers []*MarkupRenderer
ExternalSanitizerRules []MarkupSanitizerRule
MermaidMaxSourceCharacters int
FilePreviewMaxLines int
)
const (
@ -62,6 +63,7 @@ func loadMarkupFrom(rootCfg ConfigProvider) {
mustMapSetting(rootCfg, "markdown", &Markdown)
MermaidMaxSourceCharacters = rootCfg.Section("markup").Key("MERMAID_MAX_SOURCE_CHARACTERS").MustInt(5000)
FilePreviewMaxLines = rootCfg.Section("markup").Key("FILEPREVIEW_MAX_LINES").MustInt(50)
ExternalMarkupRenderers = make([]*MarkupRenderer, 0, 10)
ExternalSanitizerRules = make([]MarkupSanitizerRule, 0, 10)

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@ -3728,3 +3728,8 @@ normal_file = Normal file
executable_file = Executable file
symbolic_link = Symbolic link
submodule = Submodule
[markup]
filepreview.line = Line %[1]d in %[2]s
filepreview.lines = Lines %[1]d to %[2]d in %[3]s
filepreview.truncated = Preview has been truncated

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@ -5,10 +5,18 @@ package markup
import (
"context"
"fmt"
"code.gitea.io/gitea/models/perm/access"
"code.gitea.io/gitea/models/repo"
"code.gitea.io/gitea/models/unit"
"code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/gitrepo"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/markup"
gitea_context "code.gitea.io/gitea/services/context"
file_service "code.gitea.io/gitea/services/repository/files"
)
func ProcessorHelper() *markup.ProcessorHelper {
@ -29,5 +37,51 @@ func ProcessorHelper() *markup.ProcessorHelper {
// when using gitea context (web context), use user's visibility and user's permission to check
return user.IsUserVisibleToViewer(giteaCtx, mentionedUser, giteaCtx.Doer)
},
GetRepoFileBlob: func(ctx context.Context, ownerName, repoName, commitSha, filePath string, language *string) (*git.Blob, error) {
repo, err := repo.GetRepositoryByOwnerAndName(ctx, ownerName, repoName)
if err != nil {
return nil, err
}
var user *user.User
giteaCtx, ok := ctx.(*gitea_context.Context)
if ok {
user = giteaCtx.Doer
}
perms, err := access.GetUserRepoPermission(ctx, repo, user)
if err != nil {
return nil, err
}
if !perms.CanRead(unit.TypeCode) {
return nil, fmt.Errorf("cannot access repository code")
}
gitRepo, err := gitrepo.OpenRepository(ctx, repo)
if err != nil {
return nil, err
}
defer gitRepo.Close()
commit, err := gitRepo.GetCommit(commitSha)
if err != nil {
return nil, err
}
if language != nil {
*language, err = file_service.TryGetContentLanguage(gitRepo, commitSha, filePath)
if err != nil {
log.Error("Unable to get file language for %-v:%s. Error: %v", repo, filePath, err)
}
}
blob, err := commit.GetBlobByPath(filePath)
if err != nil {
return nil, err
}
return blob, nil
},
}
}

View file

@ -40,6 +40,7 @@
@import "./markup/content.css";
@import "./markup/codecopy.css";
@import "./markup/asciicast.css";
@import "./markup/filepreview.css";
@import "./chroma/base.css";
@import "./codemirror/base.css";

View file

@ -451,7 +451,8 @@
text-decoration: inherit;
}
.markup pre > code {
.markup pre > code,
.markup .file-preview code {
padding: 0;
margin: 0;
font-size: 100%;

View file

@ -0,0 +1,41 @@
.markup table.file-preview {
margin-bottom: 0;
}
.markup table.file-preview td {
padding: 0 10px !important;
border: none !important;
}
.markup table.file-preview tr {
border-top: none;
background-color: inherit !important;
}
.markup .file-preview-box {
margin-bottom: 16px;
}
.markup .file-preview-box .header {
padding: .5rem;
padding-left: 1rem;
border: 1px solid var(--color-secondary);
border-bottom: none;
border-radius: 0.28571429rem 0.28571429rem 0 0;
background: var(--color-box-header);
}
.markup .file-preview-box .warning {
border-radius: 0;
margin: 0;
padding: .5rem .5rem .5rem 1rem;
}
.markup .file-preview-box .header > a {
display: block;
}
.markup .file-preview-box .table {
margin-top: 0;
border-radius: 0 0 0.28571429rem 0.28571429rem;
}

View file

@ -1,4 +1,5 @@
.code-view .lines-num:hover {
.code-view .lines-num:hover,
.file-preview .lines-num:hover {
color: var(--color-text-dark) !important;
}

View file

@ -7,8 +7,8 @@ export function initUnicodeEscapeButton() {
e.preventDefault();
const fileContent = btn.closest('.file-content, .non-diff-file-content');
const fileView = fileContent?.querySelectorAll('.file-code, .file-view');
const fileContent = btn.closest('.file-content, .non-diff-file-content, .file-preview-box');
const fileView = fileContent?.querySelectorAll('.file-code, .file-view, .file-preview');
if (btn.matches('.escape-button')) {
for (const el of fileView) el.classList.add('unicode-escaped');
hideElem(btn);