WIP: Add support for rendering extra files for individual pages

core/page.go

@@ -286,17 +286,19 @@ func (p *Page) Generate() error {
 
 	destDir := filepath.Join(append([]string{p.Tacker.BaseDir, TargetDir}, p.TargetDir()...)...)
 
-	p.Tacker.Debug("Generating %s", p.Slug)
-	par := "-"
-	if p.Parent != nil {
-		par = p.Parent.DiskPath
+	if p.DiskPath != "" {
+		p.Tacker.Debug("Generating %s", p.Slug)
+		par := "-"
+		if p.Parent != nil {
+			par = p.Parent.DiskPath
+		}
+		p.Tacker.Debug(" - disk path: %s", p.DiskPath)
+		p.Tacker.Debug(" - parent: %s", par)
+		p.Tacker.Debug(" - permalink: %s", p.Permalink())
+		p.Tacker.Debug(" - destdir: %s", destDir)
+		p.Tacker.Debug(" - ancestors: %s", strings.Join(a, " << "))
+		p.Tacker.Debug(" - siblings: %s", strings.Join(s, ", "))
 	}
-	p.Tacker.Debug(" - disk path: %s", p.DiskPath)
-	p.Tacker.Debug(" - parent: %s", par)
-	p.Tacker.Debug(" - permalink: %s", p.Permalink())
-	p.Tacker.Debug(" - destdir: %s", destDir)
-	p.Tacker.Debug(" - ancestors: %s", strings.Join(a, " << "))
-	p.Tacker.Debug(" - siblings: %s", strings.Join(s, ", "))
 
 	if err := os.MkdirAll(destDir, 0755); err != nil {
 		return err
@@ -318,7 +320,7 @@ func (p *Page) Generate() error {
 	}
 
 	for i := range p.Assets {
-		p.Tacker.Debug("Copying ...%s", i)
+		p.Tacker.Debug(" - copying %s", i)
 		if err := os.MkdirAll(filepath.Dir(filepath.Join(destDir, i)), 0755); err != nil {
 			return err
 		}
@@ -327,5 +329,31 @@ func (p *Page) Generate() error {
 		}
 	}
 
+	if dict, ok := p.Variables["extra_files"].(map[interface{}]interface{}); ok {
+		for k, v := range dict {
+			fn := k.(string)
+			templateName := v.(string)
+			if fn == "" || templateName == "" {
+				continue
+			}
+
+			p.Tacker.Debug(" - rendering %s", fn)
+			tpl, err := p.Tacker.FindTemplate(templateName)
+			if err != nil {
+				return fmt.Errorf("unable to load template '%s' for extra file '%s' when rendering '%s': %s", s, fn, p.Permalink(), err)
+			}
+
+			f, err := os.OpenFile(filepath.Join(destDir, fn), os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
+			if err != nil {
+				return err
+			}
+			defer f.Close()
+
+			if err := tpl.Render(p, f); err != nil {
+				return fmt.Errorf("unable to render template '%s' for extra file '%s' when rendering '%s': %s", s, fn, p.Permalink(), err)
+			}
+		}
+	}
+
 	return nil
 }

core/tacker.go

@@ -10,6 +10,7 @@ import (
 	"path/filepath"
 	"sort"
 	"strings"
+	"time"
 
 	"github.com/cbroglie/mustache"
 	yaml "gopkg.in/yaml.v2"
@@ -39,6 +40,7 @@ type Tacker struct {
 	Logger      *log.Logger
 	DebugLogger *log.Logger
 	Strict      bool
+	BuildTime   time.Time
 }
 
 // NewTacker creates a new tack configuration structure based on the files
@@ -169,6 +171,8 @@ func (t *Tacker) Debug(format string, args ...interface{}) {
 // Tack is the main “tacking” functionality: All pages are rendered into the
 // output directory by filling the respective templates with the page content.
 func (t *Tacker) Tack() error {
+	t.BuildTime = time.Now()
+
 	mustache.AllowMissingVariables = !t.Strict
 	strictModeOn := ""
 	if t.Strict {
@@ -186,7 +190,6 @@ func (t *Tacker) Tack() error {
 	}
 
 	for _, page := range t.Pages {
-		t.Debug("%s => %s (template: %s)", page.Permalink(), page.Slug, page.Template)
 		if err := page.Generate(); err != nil {
 			return err
 		}

core/template.go

@@ -4,10 +4,13 @@ import (
 	"io"
 	"sort"
 	"strings"
+	"time"
 
 	"github.com/cbroglie/mustache"
 )
 
+const RFC822 string = "02 Jan 2006 15:04:05 -0700"
+
 type Template struct {
 	*mustache.Template
 }
@@ -32,6 +35,8 @@ func PageValues(p *Page, ctx *Page) map[string]interface{} {
 	data["root"] = p.Root()
 	if p.Post() {
 		data["date"] = p.Date.Format("2006-01-02")
+		data["date_rfc822"] = p.Date.Format(RFC822)
+		data["date_rfc3339"] = p.Date.Format(time.RFC3339)
 		data["year"] = p.Date.Format("2006")
 		data["month"] = p.Date.Format("January")
 	}
@@ -137,6 +142,9 @@ func (t *Template) Render(page *Page, w io.Writer) error {
 		ctx["posts"] = PageListValues(limitPageList(posts, page, "posts_limit"), page)
 	}
 
+	ctx["TACK_BUILD_DATE"] = page.Tacker.BuildTime.Local().Format(time.RFC3339)
+	ctx["TACK_BUILD_DATE_RFC822"] = page.Tacker.BuildTime.Local().Format(RFC822)
+
 	return t.Template.FRender(w, ctx)
 }