site: Configure permalinks per task

config.toml

@@ -1,8 +1,5 @@
 title = "Example website"
 
-[permalinks]
-"/" = "/{{ .Date.Format `2006/01/02` }}/{{ path.Base .Path }}/"
-
 [[tasks]]
 name = "Gemini"
 url = "gemini://example.com"
@@ -12,6 +9,9 @@ template = ".gmi"
 static_dir = "static"
 output_dir = "public"
 
+[tasks.permalinks]
+"/" = "/{{ .Date.Format `2006/01/02` }}/{{ path.Base .Path }}/"
+
 [[tasks.feeds]]
 input_dir = "."
 title = "Example feed"

docs/kiln.1.scd

@@ -296,26 +296,6 @@ The following keys are supported:
 |  params
 :  Extra parameters made available to templates
 
-## PERMALINKS
-
-Permalinks can be used to rewrite page paths. Permalinks are specified in the
-\[permalinks] table of the configuration file. Keys denote a path to a directory,
-and values use the Go templating language to rewrite the final path of pages in
-that directory. The templates have the same data that page templates have
-available to them (see *PAGE VARIABLES*).
-
-The following configuration will rewrite the paths of pages in the content/blog
-directory to /YYYY/MM/DD/slug. For example, the file
-content/blog/2021-05-12-hello-world.gmi will have a path of
-/2021/05/12/hello-world/.
-
-	```
-	[permalinks]
-	"/blog/" = "/{{ .Date.Format `2006/01/02` }}/{{ path.Base .Path }}"
-	```
-
-For more information on templates, see *TEMPLATES*.
-
 ## TASKS
 
 Tasks can be specified in the [[tasks]] array of tables.
@@ -485,6 +465,29 @@ HTML, and the *gmnitohtml*(1) command to convert Gemini text to HTML.
 	output_dir = "public"
 	```
 
+## PERMALINKS
+
+Permalinks can be used to rewrite page paths. Permalinks are specified in the
+\[tasks.permalinks] table of the configuration file. Keys denote a path to a
+directory, and values use the Go templating language to rewrite the final path
+of pages in that directory. The templates have the same data that page templates
+have available to them (see *PAGE VARIABLES*).
+
+The following configuration will rewrite the paths of pages in the content/blog
+directory to /YYYY/MM/DD/slug. For example, the file
+content/blog/2021-05-12-hello-world.gmi will have a path of
+/2021/05/12/hello-world/.
+
+	```
+	[[tasks]]
+	# ...
+
+	[tasks.permalinks]
+	"/blog/" = "/{{ .Date.Format `2006/01/02` }}/{{ path.Base .Path }}"
+	```
+
+For more information on templates, see *TEMPLATES*.
+
 ## FEEDS
 
 Feeds can be specified in the [[tasks.feeds]] array of tables. Multiple feeds

page.go

@@ -159,7 +159,7 @@ func (p *Page) _read(fsys fs.FS, path string, task *Task, cfg *Site) error {
 					}
 				}
 				page.Path = path
-				if permalink, ok := cfg.permalinks[p.Path]; ok {
+				if permalink, ok := task.permalinks[p.Path]; ok {
 					var b strings.Builder
 					permalink.Execute(&b, page)
 					page.Path = b.String()

site.go

@@ -13,14 +13,12 @@ import (
 
 // Site represents a site.
 type Site struct {
-	Title      string                 `toml:"title"`
+	Title     string                 `toml:"title"`
-	Tasks      []*Task                `toml:"tasks"`
+	Tasks     []*Task                `toml:"tasks"`
-	Params     map[string]interface{} `toml:"params"`
+	Params    map[string]interface{} `toml:"params"`
-	Permalinks map[string]string      `toml:"permalinks"`
+	Generated time.Time              `toml:"-"`
-	Generated  time.Time              `toml:"-"`
+	Root      *Page                  `toml:"-"`
-	Root       *Page                  `toml:"-"`
+	templates Templates
-	permalinks map[string]*template.Template
-	templates  Templates
 }
 
 // Task represents a site build task.
@@ -35,9 +33,11 @@ type Task struct {
 	OutputDir   string            `toml:"output_dir"`
 	URL         string            `toml:"url"`
 	UglyURLs    bool              `toml:"ugly_urls"`
+	Permalinks  map[string]string `toml:"permalinks"`
 	Feeds       []Feed            `toml:"feeds"`
 	preprocess  map[string][]string
 	postprocess []string
+	permalinks  map[string]*template.Template
 	feeds       map[string][]Feed
 }
 
@@ -74,17 +74,6 @@ func LoadSite(config string) (*Site, error) {
 
 	funcs := site.funcs()
 
-	// Parse permalinks
-	site.permalinks = map[string]*template.Template{}
-	for path := range site.Permalinks {
-		t := template.New(fmt.Sprintf("permalink %q", path)).Funcs(funcs)
-		_, err := t.Parse(site.Permalinks[path])
-		if err != nil {
-			return nil, err
-		}
-		site.permalinks[path] = t
-	}
-
 	// Load templates
 	templateExts := []string{}
 	for _, task := range site.Tasks {
@@ -98,6 +87,17 @@ func LoadSite(config string) (*Site, error) {
 	}
 
 	for _, task := range site.Tasks {
+		// Parse permalinks
+		task.permalinks = map[string]*template.Template{}
+		for path := range task.Permalinks {
+			t := template.New(fmt.Sprintf("permalink %q", path)).Funcs(funcs)
+			_, err := t.Parse(task.Permalinks[path])
+			if err != nil {
+				return nil, err
+			}
+			task.permalinks[path] = t
+		}
+
 		// Populate feeds
 		task.feeds = map[string][]Feed{}
 		for _, feed := range task.Feeds {