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Rework markup link rendering (#26745)

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Fixes #26548

This PR refactors the rendering of markup links. The old code uses
`strings.Replace` to change some urls while the new code uses more
context to decide which link should be generated.

The added tests should ensure the same output for the old and new
behaviour (besides the bug).

We may need to refactor the rendering a bit more to make it clear how
the different helper methods render the input string. There are lots of
options (resolve links / images / mentions / git hashes / emojis / ...)
but you don't really know what helper uses which options. For example,
we currently support images in the user description which should not be
allowed I think:

<details>
  <summary>Profile</summary> 

https://try.gitea.io/KN4CK3R

![grafik](109ae422-496d-4200-b52e-b3a528f553e5)

</details>

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
This commit is contained in:
KN4CK3R 2024-01-15 09:49:24 +01:00 • committed by GitHub
parent c7e4629c02
commit 637451a45e
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42 changed files with 967 additions and 395 deletions
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24
routers/web/user/profile.go
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@ -7,6 +7,7 @@ package user
import (
"fmt"
"net/http"
"path"
"strings"
activities_model "code.gitea.io/gitea/models/activities"
@ -233,18 +234,19 @@ func prepareUserProfileTabData(ctx *context.Context, showPrivate bool, profileDb
if bytes, err := profileReadme.GetBlobContent(setting.UI.MaxDisplayFileSize); err != nil {
log.Error("failed to GetBlobContent: %v", err)
} else {
// Give the URLPrefix to the markdown render for the full link of media element.
// the media link usually be like /[user]/[repoName]/media/branch/[branchName],
// Eg. /Tom/.profile/media/branch/main
// The branch shown on the profile page is the default branch, this need to be in sync with doc, see:
// https://docs.gitea.com/usage/profile-readme
prefix := profileDbRepo.Link() + "/src/branch/" + util.PathEscapeSegments(profileDbRepo.DefaultBranch)
if profileContent, err := markdown.RenderString(&markup.RenderContext{
Ctx: ctx,
GitRepo: profileGitRepo,
URLPrefix: prefix,
Metas: map[string]string{"mode": "document"},
Ctx: ctx,
GitRepo: profileGitRepo,
Links: markup.Links{
// Give the repo link to the markdown render for the full link of media element.
// the media link usually be like /[user]/[repoName]/media/branch/[branchName],
// Eg. /Tom/.profile/media/branch/main
// The branch shown on the profile page is the default branch, this need to be in sync with doc, see:
// https://docs.gitea.com/usage/profile-readme
Base: profileDbRepo.Link(),
BranchPath: path.Join("branch", util.PathEscapeSegments(profileDbRepo.DefaultBranch)),
},
Metas: map[string]string{"mode": "document"},
}, bytes); err != nil {
log.Error("failed to RenderString: %v", err)
} else {