Remove sourceRelativeLinks

Fixes #3766

6 files changed, 22 insertions, 329 deletions

diff --git a/helpers/content.go b/helpers/content.go
index d84fe27a8..4c053a84d 100644
--- a/helpers/content.go
+++ b/helpers/content.go
@@ -62,35 +62,31 @@ func NewContentSpec(cfg config.Provider) *ContentSpec {
 
 // Blackfriday holds configuration values for Blackfriday rendering.
 type Blackfriday struct {
-	Smartypants                      bool
-	SmartypantsQuotesNBSP            bool
-	AngledQuotes                     bool
-	Fractions                        bool
-	HrefTargetBlank                  bool
-	SmartDashes                      bool
-	LatexDashes                      bool
-	TaskLists                        bool
-	PlainIDAnchors                   bool
-	SourceRelativeLinksEval          bool
-	SourceRelativeLinksProjectFolder string
-	Extensions                       []string
-	ExtensionsMask                   []string
+	Smartypants           bool
+	SmartypantsQuotesNBSP bool
+	AngledQuotes          bool
+	Fractions             bool
+	HrefTargetBlank       bool
+	SmartDashes           bool
+	LatexDashes           bool
+	TaskLists             bool
+	PlainIDAnchors        bool
+	Extensions            []string
+	ExtensionsMask        []string
 }
 
 // NewBlackfriday creates a new Blackfriday filled with site config or some sane defaults.
 func (c ContentSpec) NewBlackfriday() *Blackfriday {
 	defaultParam := map[string]interface{}{
-		"smartypants":                      true,
-		"angledQuotes":                     false,
-		"smartypantsQuotesNBSP":            false,
-		"fractions":                        true,
-		"hrefTargetBlank":                  false,
-		"smartDashes":                      true,
-		"latexDashes":                      true,
-		"plainIDAnchors":                   true,
-		"taskLists":                        true,
-		"sourceRelativeLinks":              false,
-		"sourceRelativeLinksProjectFolder": "/docs/content",
+		"smartypants":           true,
+		"angledQuotes":          false,
+		"smartypantsQuotesNBSP": false,
+		"fractions":             true,
+		"hrefTargetBlank":       false,
+		"smartDashes":           true,
+		"latexDashes":           true,
+		"plainIDAnchors":        true,
+		"taskLists":             true,
 	}
 
 	ToLowerMap(defaultParam)
@@ -112,13 +108,6 @@ func (c ContentSpec) NewBlackfriday() *Blackfriday {
 		jww.FATAL.Printf("Failed to get site rendering config\n%s", err.Error())
 	}
 
-	if combinedConfig.SourceRelativeLinksEval {
-		// Remove in Hugo 0.21
-		Deprecated("blackfriday", "sourceRelativeLinksEval",
-			`There is no replacement for this feature, as no developer has stepped up to the plate and volunteered to maintain this feature`, false)
-
-	}
-
 	return combinedConfig
 }
 
@@ -412,8 +401,6 @@ type RenderingContext struct {
 	DocumentName string
 	Config       *Blackfriday
 	RenderTOC    bool
-	FileResolver FileResolverFunc
-	LinkResolver LinkResolverFunc
 	Cfg          config.Provider
 }
 
diff --git a/helpers/content_renderer.go b/helpers/content_renderer.go
index 376351f7a..10d99ec8e 100644
--- a/helpers/content_renderer.go
+++ b/helpers/content_renderer.go
@@ -20,7 +20,6 @@ import (
 	"github.com/gohugoio/hugo/config"
 	"github.com/miekg/mmark"
 	"github.com/russross/blackfriday"
-	jww "github.com/spf13/jwalterweatherman"
 )
 
 type LinkResolverFunc func(ref string) (string, error)
@@ -43,35 +42,6 @@ func (r *HugoHTMLRenderer) BlockCode(out *bytes.Buffer, text []byte, lang string
 	}
 }
 
-func (r *HugoHTMLRenderer) Link(out *bytes.Buffer, link []byte, title []byte, content []byte) {
-	if r.LinkResolver == nil || bytes.HasPrefix(link, []byte("HAHAHUGOSHORTCODE")) {
-		// Use the blackfriday built in Link handler
-		r.Renderer.Link(out, link, title, content)
-	} else {
-		// set by SourceRelativeLinksEval
-		newLink, err := r.LinkResolver(string(link))
-		if err != nil {
-			newLink = string(link)
-			jww.ERROR.Printf("LinkResolver: %s", err)
-		}
-		r.Renderer.Link(out, []byte(newLink), title, content)
-	}
-}
-func (r *HugoHTMLRenderer) Image(out *bytes.Buffer, link []byte, title []byte, alt []byte) {
-	if r.FileResolver == nil || bytes.HasPrefix(link, []byte("HAHAHUGOSHORTCODE")) {
-		// Use the blackfriday built in Image handler
-		r.Renderer.Image(out, link, title, alt)
-	} else {
-		// set by SourceRelativeLinksEval
-		newLink, err := r.FileResolver(string(link))
-		if err != nil {
-			newLink = string(link)
-			jww.ERROR.Printf("FileResolver: %s", err)
-		}
-		r.Renderer.Image(out, []byte(newLink), title, alt)
-	}
-}
-
 // ListItem adds task list support to the Blackfriday renderer.
 func (r *HugoHTMLRenderer) ListItem(out *bytes.Buffer, text []byte, flags int) {
 	if !r.Config.TaskLists {
diff --git a/helpers/content_test.go b/helpers/content_test.go
index e1fe5cebd..b0afb9cbd 100644
--- a/helpers/content_test.go
+++ b/helpers/content_test.go
@@ -188,7 +188,6 @@ func TestGetHTMLRendererAllFlags(t *testing.T) {
 	ctx.Config.SmartDashes = true
 	ctx.Config.Smartypants = true
 	ctx.Config.SmartypantsQuotesNBSP = true
-	ctx.Config.SourceRelativeLinksEval = true
 	renderer := c.getHTMLRenderer(defaultFlags, ctx)
 	actualFlags := renderer.GetFlags()
 	var expectedFlags int
diff --git a/hugolib/page.go b/hugolib/page.go
index 9937be325..0120d6ef0 100644
--- a/hugolib/page.go
+++ b/hugolib/page.go
@@ -622,22 +622,11 @@ func (p *Page) setAutoSummary() error {
 }
 
 func (p *Page) renderContent(content []byte) []byte {
-	var fn helpers.LinkResolverFunc
-	var fileFn helpers.FileResolverFunc
-	if p.getRenderingConfig().SourceRelativeLinksEval {
-		fn = func(ref string) (string, error) {
-			return p.Site.SourceRelativeLink(ref, p)
-		}
-		fileFn = func(ref string) (string, error) {
-			return p.Site.SourceRelativeLinkFile(ref, p)
-		}
-	}
-
 	return p.s.ContentSpec.RenderBytes(&helpers.RenderingContext{
 		Content: content, RenderTOC: true, PageFmt: p.determineMarkupType(),
 		Cfg:        p.Language(),
 		DocumentID: p.UniqueID(), DocumentName: p.Path(),
-		Config: p.getRenderingConfig(), LinkResolver: fn, FileResolver: fileFn})
+		Config: p.getRenderingConfig()})
 }
 
 func (p *Page) getRenderingConfig() *helpers.Blackfriday {
diff --git a/hugolib/site.go b/hugolib/site.go
index 8bf37e17d..13ca7f144 100644
--- a/hugolib/site.go
+++ b/hugolib/site.go
@@ -493,126 +493,6 @@ func (s *SiteInfo) RelRef(ref string, page *Page, options ...string) (string, er
 	return s.refLink(ref, page, true, outputFormat)
 }
 
-// SourceRelativeLink attempts to convert any source page relative links (like [../another.md]) into absolute links
-func (s *SiteInfo) SourceRelativeLink(ref string, currentPage *Page) (string, error) {
-	var refURL *url.URL
-	var err error
-
-	refURL, err = url.Parse(strings.TrimPrefix(ref, currentPage.getRenderingConfig().SourceRelativeLinksProjectFolder))
-	if err != nil {
-		return "", err
-	}
-
-	if refURL.Scheme != "" {
-		// Not a relative source level path
-		return ref, nil
-	}
-
-	var target *Page
-	var link string
-
-	if refURL.Path != "" {
-		refPath := filepath.Clean(filepath.FromSlash(refURL.Path))
-
-		if strings.IndexRune(refPath, os.PathSeparator) == 0 { // filepath.IsAbs fails to me.
-			refPath = refPath[1:]
-		} else {
-			if currentPage != nil {
-				refPath = filepath.Join(currentPage.Source.Dir(), refURL.Path)
-			}
-		}
-
-		for _, page := range s.AllRegularPages {
-			if page.Source.Path() == refPath {
-				target = page
-				break
-			}
-		}
-		// need to exhaust the test, then try with the others :/
-		// if the refPath doesn't end in a filename with extension `.md`, then try with `.md` , and then `/index.md`
-		mdPath := strings.TrimSuffix(refPath, string(os.PathSeparator)) + ".md"
-		for _, page := range s.AllRegularPages {
-			if page.Source.Path() == mdPath {
-				target = page
-				break
-			}
-		}
-		indexPath := filepath.Join(refPath, "index.md")
-		for _, page := range s.AllRegularPages {
-			if page.Source.Path() == indexPath {
-				target = page
-				break
-			}
-		}
-
-		if target == nil {
-			return "", fmt.Errorf("No page found for \"%s\" on page \"%s\".\n", ref, currentPage.Source.Path())
-		}
-
-		link = target.RelPermalink()
-
-	}
-
-	if refURL.Fragment != "" {
-		link = link + "#" + refURL.Fragment
-
-		if refURL.Path != "" && target != nil && !target.getRenderingConfig().PlainIDAnchors {
-			link = link + ":" + target.UniqueID()
-		} else if currentPage != nil && !currentPage.getRenderingConfig().PlainIDAnchors {
-			link = link + ":" + currentPage.UniqueID()
-		}
-	}
-
-	return link, nil
-}
-
-// SourceRelativeLinkFile attempts to convert any non-md source relative links (like [../another.gif]) into absolute links
-func (s *SiteInfo) SourceRelativeLinkFile(ref string, currentPage *Page) (string, error) {
-	var refURL *url.URL
-	var err error
-
-	refURL, err = url.Parse(strings.TrimPrefix(ref, currentPage.getRenderingConfig().SourceRelativeLinksProjectFolder))
-	if err != nil {
-		return "", err
-	}
-
-	if refURL.Scheme != "" {
-		// Not a relative source level path
-		return ref, nil
-	}
-
-	var target *source.File
-	var link string
-
-	if refURL.Path != "" {
-		refPath := filepath.Clean(filepath.FromSlash(refURL.Path))
-
-		if strings.IndexRune(refPath, os.PathSeparator) == 0 { // filepath.IsAbs fails to me.
-			refPath = refPath[1:]
-		} else {
-			if currentPage != nil {
-				refPath = filepath.Join(currentPage.Source.Dir(), refURL.Path)
-			}
-		}
-
-		for _, file := range *s.Files {
-			if file.Path() == refPath {
-				target = file
-				break
-			}
-		}
-
-		if target == nil {
-			return "", fmt.Errorf("No file found for \"%s\" on page \"%s\".\n", ref, currentPage.Source.Path())
-		}
-
-		link = target.Path()
-		return "/" + filepath.ToSlash(link), nil
-	}
-
-	return "", fmt.Errorf("failed to find a file to match \"%s\" on page \"%s\"", ref, currentPage.Source.Path())
-}
-
 func (s *SiteInfo) addToPaginationPageCount(cnt uint64) {
 	atomic.AddUint64(&s.paginationPageCount, cnt)
 }
diff --git a/hugolib/site_test.go b/hugolib/site_test.go
index bffdec1a9..d7ca66827 100644
--- a/hugolib/site_test.go
+++ b/hugolib/site_test.go
@@ -938,8 +938,7 @@ func setupLinkingMockSite(t *testing.T) *Site {
 	cfg.Set("pluralizeListTitles", false)
 	cfg.Set("canonifyURLs", false)
 	cfg.Set("blackfriday",
-		map[string]interface{}{
-			"sourceRelativeLinksProjectFolder": "/docs"})
+		map[string]interface{}{})
 	writeSourcesToSource(t, "content", fs, sources...)
 	return buildSingleSite(t, deps.DepsCfg{Fs: fs, Cfg: cfg}, BuildCfg{})
 
@@ -973,134 +972,3 @@ func TestRefLinking(t *testing.T) {
 
 	// TODO: and then the failure cases.
 }
-
-func TestSourceRelativeLinksing(t *testing.T) {
-	t.Parallel()
-	site := setupLinkingMockSite(t)
-
-	type resultMap map[string]string
-
-	okresults := map[string]resultMap{
-		"index.md": map[string]string{
-			"/docs/rootfile.md": "/rootfile/",
-			"rootfile.md":       "/rootfile/",
-			// See #3396 -- this may potentially be ambiguous (i.e. name conflict with home page).
-			// But the user have chosen so. This index.md patterns is more relevant in /sub-folders.
-			"index.md":                      "/",
-			"level2/2-root.md":              "/level2/2-root/",
-			"/docs/level2/2-root.md":        "/level2/2-root/",
-			"level2/level3/3-root.md":       "/level2/level3/3-root/",
-			"/docs/level2/level3/3-root.md": "/level2/level3/3-root/",
-			"/docs/level2/2-root/":          "/level2/2-root/",
-			"/docs/level2/2-root":           "/level2/2-root/",
-			"/level2/2-root/":               "/level2/2-root/",
-			"/level2/2-root":                "/level2/2-root/",
-		}, "rootfile.md": map[string]string{
-			"/docs/rootfile.md":             "/rootfile/",
-			"rootfile.md":                   "/rootfile/",
-			"level2/2-root.md":              "/level2/2-root/",
-			"/docs/level2/2-root.md":        "/level2/2-root/",
-			"level2/level3/3-root.md":       "/level2/level3/3-root/",
-			"/docs/level2/level3/3-root.md": "/level2/level3/3-root/",
-		}, "level2/2-root.md": map[string]string{
-			"../rootfile.md":                "/rootfile/",
-			"/docs/rootfile.md":             "/rootfile/",
-			"2-root.md":                     "/level2/2-root/",
-			"../level2/2-root.md":           "/level2/2-root/",
-			"./2-root.md":                   "/level2/2-root/",
-			"/docs/level2/2-root.md":        "/level2/2-root/",
-			"level3/3-root.md":              "/level2/level3/3-root/",
-			"../level2/level3/3-root.md":    "/level2/level3/3-root/",
-			"/docs/level2/level3/3-root.md": "/level2/level3/3-root/",
-		}, "level2/index.md": map[string]string{
-			"../rootfile.md":                "/rootfile/",
-			"/docs/rootfile.md":             "/rootfile/",
-			"2-root.md":                     "/level2/2-root/",
-			"../level2/2-root.md":           "/level2/2-root/",
-			"./2-root.md":                   "/level2/2-root/",
-			"/docs/level2/2-root.md":        "/level2/2-root/",
-			"level3/3-root.md":              "/level2/level3/3-root/",
-			"../level2/level3/3-root.md":    "/level2/level3/3-root/",
-			"/docs/level2/level3/3-root.md": "/level2/level3/3-root/",
-		}, "level2/level3/3-root.md": map[string]string{
-			"../../rootfile.md":             "/rootfile/",
-			"/docs/rootfile.md":             "/rootfile/",
-			"../2-root.md":                  "/level2/2-root/",
-			"/docs/level2/2-root.md":        "/level2/2-root/",
-			"3-root.md":                     "/level2/level3/3-root/",
-			"./3-root.md":                   "/level2/level3/3-root/",
-			"/docs/level2/level3/3-root.md": "/level2/level3/3-root/",
-		}, "level2/level3/index.md": map[string]string{
-			"../../rootfile.md":             "/rootfile/",
-			"/docs/rootfile.md":             "/rootfile/",
-			"../2-root.md":                  "/level2/2-root/",
-			"/docs/level2/2-root.md":        "/level2/2-root/",
-			"3-root.md":                     "/level2/level3/3-root/",
-			"./3-root.md":                   "/level2/level3/3-root/",
-			"/docs/level2/level3/3-root.md": "/level2/level3/3-root/",
-		},
-	}
-
-	for currentFile, results := range okresults {
-		currentPage := findPage(site, currentFile)
-		if currentPage == nil {
-			t.Fatalf("failed to find current page in site")
-		}
-		for link, url := range results {
-			if out, err := site.Info.SourceRelativeLink(link, currentPage); err != nil || out != url {
-				t.Errorf("Expected %s to resolve to (%s), got (%s) - error: %s", link, url, out, err)
-			} else {
-				//t.Logf("tested ok %s maps to %s", link, out)
-			}
-		}
-	}
-	// TODO: and then the failure cases.
-	// 			"https://docker.com":           "",
-	// site_test.go:1094: Expected https://docker.com to resolve to (), got () - error: Not a plain filepath link (https://docker.com)
-
-}
-
-func TestSourceRelativeLinkFileing(t *testing.T) {
-	t.Parallel()
-	site := setupLinkingMockSite(t)
-
-	type resultMap map[string]string
-
-	okresults := map[string]resultMap{
-		"index.md": map[string]string{
-			"/root-image.png": "/root-image.png",
-			"root-image.png":  "/root-image.png",
-		}, "rootfile.md": map[string]string{
-			"/root-image.png": "/root-image.png",
-		}, "level2/2-root.md": map[string]string{
-			"/root-image.png": "/root-image.png",
-			"common.png":      "/level2/common.png",
-		}, "level2/index.md": map[string]string{
-			"/root-image.png": "/root-image.png",
-			"common.png":      "/level2/common.png",
-			"./common.png":    "/level2/common.png",
-		}, "level2/level3/3-root.md": map[string]string{
-			"/root-image.png": "/root-image.png",
-			"common.png":      "/level2/level3/common.png",
-			"../common.png":   "/level2/common.png",
-		}, "level2/level3/index.md": map[string]string{
-			"/root-image.png": "/root-image.png",
-			"common.png":      "/level2/level3/common.png",
-			"../common.png":   "/level2/common.png",
-		},
-	}
-
-	for currentFile, results := range okresults {
-		currentPage := findPage(site, currentFile)
-		if currentPage == nil {
-			t.Fatalf("failed to find current page in site")
-		}
-		for link, url := range results {
-			if out, err := site.Info.SourceRelativeLinkFile(link, currentPage); err != nil || out != url {
-				t.Errorf("Expected %s to resolve to (%s), got (%s) - error: %s", link, url, out, err)
-			} else {
-				//t.Logf("tested ok %s maps to %s", link, out)
-			}
-		}
-	}
-}