Add portable links, requires hugo 0.62

7 files changed, 68 insertions, 3 deletions

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index a5ef8ac..699a0b9 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -25,7 +25,7 @@ jobs:
 
       - name: Install Hugo
         run: |
-          wget "https://github.com/gohugoio/hugo/releases/download/v0.60.0/hugo_extended_0.60.0_Linux-64bit.deb" -O /tmp/hugo.deb
+          wget "https://github.com/gohugoio/hugo/releases/download/v0.62.0/hugo_extended_0.62.0_Linux-64bit.deb" -O /tmp/hugo.deb
           sudo dpkg -i /tmp/hugo.deb
 
       - name: Run Hugo
diff --git a/README.md b/README.md
index 1061ed4..942f37a 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Hugo Book Theme
 
-[![Hugo](https://img.shields.io/badge/hugo-0.60-blue.svg)](https://gohugo.io)
+[![Hugo](https://img.shields.io/badge/hugo-0.62-blue.svg)](https://gohugo.io)
 [![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](LICENSE)
 
 ### [Hugo](https://gohugo.io) documentation theme as simple as plain book
@@ -178,6 +178,12 @@ disableKinds = ['taxonomy', 'taxonomyTerm']
   # See https://gohugo.io/content-management/comments/#configure-disqus
   # Can be overwritten by same param in page frontmatter
   BookComments = true
+
+  # /!\ This is an experimental feature, might be removed or changed at any time
+  # (Optional, experimental, default false) Enables portable links and link checks in markdown pages.
+  # Portable links meant to work with text editors and let you write markdown without {{< relref >}} shortcode
+  # Theme will print warning if page referenced in markdown does not exists.
+  BookPortableLinks = true
 ```
 
 ### Multi-Language Support
diff --git a/exampleSite/config.toml b/exampleSite/config.toml
index 65c9f0e..810ceab 100644
--- a/exampleSite/config.toml
+++ b/exampleSite/config.toml
@@ -90,3 +90,9 @@ enableGitInfo = true
   # See https://gohugo.io/content-management/comments/#configure-disqus
   # Can be overwritten by same param in page frontmatter
   BookComments = true
+
+  # /!\ This is an experimental feature, might be removed or changed at any time
+  # (Optional, experimental, default false) Enables portable links and link checks in markdown pages.
+  # Portable links meant to work with text editors and let you write markdown without {{< relref >}} shortcode
+  # Theme will print warning if page referenced in markdown does not exists.
+  BookPortableLinks = true
diff --git a/exampleSite/config.yaml b/exampleSite/config.yaml
index 3c9cb45..f7f3bc2 100644
--- a/exampleSite/config.yaml
+++ b/exampleSite/config.yaml
@@ -86,3 +86,9 @@ params:
   # See https://gohugo.io/content-management/comments/#configure-disqus
   # Can be overwritten by same param in page frontmatter
   BookComments: true
+
+  # /!\ This is an experimental feature, might be removed or changed at any time
+  # (Optional, experimental, default false) Enables portable links and link checks in markdown pages.
+  # Portable links meant to work with text editors and let you write markdown without {{< relref >}} shortcode
+  # Theme will print warning if page referenced in markdown does not exists.
+  BookPortableLinks: true
diff --git a/layouts/_default/_markup/render-image.html b/layouts/_default/_markup/render-image.html
new file mode 100644
index 0000000..154e3a7
--- /dev/null
+++ b/layouts/_default/_markup/render-image.html
@@ -0,0 +1,19 @@
+{{ if .Page.Site.Params.BookPortableLinks }}
+  {{- template "portable-image" . -}}
+{{ else }}
+  <img src="{{ .Destination | safeURL }}" alt="{{ .Text }}" {{ with .Title }}title="{{ . }}"{{ end }}/>
+{{ end }}
+
+{{- define "portable-image" -}}
+  {{- $isRemote := or (in .Destination "://") (strings.HasPrefix .Destination "//") }}
+  {{- if not $isRemote }}
+    {{- $path := print .Page.File.Dir .Destination }}
+    {{- if strings.HasPrefix .Destination "/" }}
+      {{- $path = print "/static" .Destination }}
+    {{- end }}
+    {{- if not (fileExists $path) }}
+      {{- warnf "Image '%s' not found in '%s'" .Destination .Page.File }}
+    {{- end }}
+  {{- end }}
+  <img src="{{ .Destination | safeURL }}" alt="{{ .Text }}" {{ with .Title }}title="{{ . }}"{{ end }}/>
+{{- end -}}
diff --git a/layouts/_default/_markup/render-link.html b/layouts/_default/_markup/render-link.html
new file mode 100644
index 0000000..48b419f
--- /dev/null
+++ b/layouts/_default/_markup/render-link.html
@@ -0,0 +1,28 @@
+{{ if .Page.Site.Params.BookPortableLinks }}
+  {{- template "portable-link" . -}}
+{{ else }}
+  <a href="{{ .Destination | safeURL }}"{{ with .Title}} title="{{ . }}"{{ end }}>{{ .Text | safeHTML }}</a>
+{{ end }}
+
+{{- define "portable-link" -}}
+  {{- $destination := .Destination }}
+  {{- $isRemote := or (in .Destination "://") (strings.HasPrefix .Destination "//") }}
+  {{- if not $isRemote }}
+    {{- $url := urls.Parse .Destination }}
+    {{- $path := strings.TrimSuffix "/_index.md" $url.Path }}
+    {{- $path = strings.TrimSuffix "/_index" $path }}
+    {{- $path = strings.TrimSuffix ".md" $path }}
+    {{- $page := .Page.GetPage $path }}
+    {{- if $page }}
+      {{- $destination = $page.RelPermalink }}
+      {{- if $url.Fragment }}
+        {{- $destination = print $destination "#" $url.Fragment }}
+      {{- end }}
+    {{- else if fileExists (print .Page.File.Dir .Destination) }}
+      <!-- Nothing -->
+    {{- else -}}
+      {{- warnf "Page '%s' not found in '%s'" .Destination .Page.File }}
+    {{- end }}
+  {{- end }}
+  <a href="{{ $destination | safeURL }}"{{ with .Title}} title="{{ . }}"{{ end }}>{{ .Text | safeHTML }}</a>
+{{- end -}}
diff --git a/theme.toml b/theme.toml
index 94b5ee2..b424f14 100644
--- a/theme.toml
+++ b/theme.toml
@@ -8,7 +8,7 @@ description = "Hugo documentation theme as simple as plain book"
 homepage = "https://github.com/alex-shpak/hugo-book"
 tags = ["responsive", "clean", "documentation", "docs", "flexbox", "search", "mobile", "multilingual", "disqus"]
 features = []
-min_version = "0.60"
+min_version = "0.62"
 
 [author]
   name = "Alex Shpak"