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Use io.Pipe for chaning render tasks.

Browse source 
Also clean up logic for finding layouts.
This commit is contained in:
Noah Campbell 2013-10-02 09:34:41 -04:00
parent 689cda1740
commit 54a2790fce
2 changed files with 55 additions and 53 deletions
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81
hugolib/site.go
View file

@ -376,7 +376,7 @@ func (s *Site) RenderPages() (err error) {
layout = p.Layout()
}
err := s.render(p, layout, "_default/single.html", p.TargetPath())
err := s.render(p, p.TargetPath(), layout, "_default/single.html")
if err != nil {
return err
}
@ -401,18 +401,16 @@ func (s *Site) RenderIndexes() error {
var base string
base = plural + "/" + k
err := s.render(n, layout, "_default/indexes.html", base+".html")
err := s.render(n, base+".html", layout, "_default/indexes.html")
if err != nil {
return err
}
if a := s.Tmpl.Lookup("rss.xml"); a != nil {
// XML Feed
y := s.NewXMLBuffer()
n.Url = helpers.Urlize(plural + "/" + k + ".xml")
n.Permalink = permalink(s, n.Url)
s.Tmpl.ExecuteTemplate(y, "rss.xml", n)
err = s.WritePublic(base+".xml", y)
err := s.render(n, base+".xml", "rss.xml")
if err != nil {
return err
}
@ -436,7 +434,7 @@ func (s *Site) RenderIndexesIndexes() (err error) {
n.Data["Index"] = s.Indexes[plural]
n.Data["OrderedIndex"] = s.Info.Indexes[plural]
err := s.render(n, layout, "_default/indexesindexes.html", plural+"/index.html")
err := s.render(n, plural+"/index.html", layout)
if err != nil {
return err
}
@ -456,7 +454,7 @@ func (s *Site) RenderLists() error {
n.Data["Pages"] = data
layout := "indexes/" + section + ".html"
err := s.render(n, layout, "_default/index.html", section)
err := s.render(n, section, layout, "_default/index.html")
if err != nil {
return err
}
@ -465,12 +463,7 @@ func (s *Site) RenderLists() error {
// XML Feed
n.Url = helpers.Urlize(section + ".xml")
n.Permalink = template.HTML(string(n.Site.BaseUrl) + n.Url)
y := s.NewXMLBuffer()
s.Tmpl.ExecuteTemplate(y, "rss.xml", n)
err = s.WritePublic(section+"/index.xml", y)
if err != nil {
return err
}
return s.render(n, section+"/index.html", "rss.xml")
}
}
return nil
@ -491,7 +484,7 @@ func (s *Site) RenderHomePage() error {
n.Data["Pages"] = s.Pages[:9]
}
}
err := s.render(n, "index.html", "_default/index.html", "/")
err := s.render(n, "/", "index.html")
if err != nil {
return err
}
@ -501,9 +494,7 @@ func (s *Site) RenderHomePage() error {
n.Url = helpers.Urlize("index.xml")
n.Title = "Recent Content"
n.Permalink = permalink(s, "index.xml")
y := s.NewXMLBuffer()
s.Tmpl.ExecuteTemplate(y, "rss.xml", n)
err = s.WritePublic("index.xml", y)
err := s.render(n, "index.html", "rss.xml")
if err != nil {
return err
}
@ -513,7 +504,7 @@ func (s *Site) RenderHomePage() error {
n.Url = helpers.Urlize("404.html")
n.Title = "404 Page not found"
n.Permalink = permalink(s, "404.html")
return s.render(n, "404.html", "_default/404.html", "404.html")
return s.render(n, "404.html", "404.html")
}
return nil
@ -547,41 +538,39 @@ func (s *Site) NewNode() *Node {
}
}
func (s *Site) render(d interface{}, layout, defaultLayout, out string) (err error) {
r, err := s.renderThingOrDefault(d, layout, defaultLayout)
if err != nil {
return err
}
func (s *Site) render(d interface{}, out string, layouts ...string) (err error) {
reader, writer := io.Pipe()
err = s.WritePublic(out, r)
if err != nil {
return err
}
return
layout := s.findFirstLayout(layouts...)
go func() {
err = s.renderThing(d, layout, writer)
if err != nil {
panic(err)
}
}()
return s.WritePublic(out, reader)
}
func (s *Site) renderThing(d interface{}, layout string) (*bytes.Buffer, error) {
if s.Tmpl.Lookup(layout) == nil {
return nil, fmt.Errorf("Layout not found: %s", layout)
}
buffer := new(bytes.Buffer)
err := s.Tmpl.ExecuteTemplate(buffer, layout, d)
return buffer, err
}
func (s *Site) renderThingOrDefault(d interface{}, layout string, defaultLayout string) (*bytes.Buffer, error) {
content, err := s.renderThing(d, layout)
if err != nil {
var err2 error
content, err2 = s.renderThing(d, defaultLayout)
if err2 == nil {
return content, err2
func (s *Site) findFirstLayout(layouts ...string) string {
for _, layout := range layouts {
if s.Tmpl.Lookup(layout) != nil {
return layout
}
}
return content, err
panic("Unable to find layout.")
}
func (s *Site) NewXMLBuffer() *bytes.Buffer {
func (s *Site) renderThing(d interface{}, layout string, w io.WriteCloser) error {
// If the template doesn't exist, then return, but leave the Writer open
if s.Tmpl.Lookup(layout) == nil {
return fmt.Errorf("Layout not found: %s", layout)
}
defer w.Close()
return s.Tmpl.ExecuteTemplate(w, layout, d)
}
func (s *Site) whyNewXMLBuffer() *bytes.Buffer {
header := "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\" ?>\n"
return bytes.NewBufferString(header)
}

27
hugolib/site_test.go
View file

@ -2,6 +2,7 @@ package hugolib
import (
"bytes"
"io"
"fmt"
"github.com/spf13/hugo/source"
"github.com/spf13/hugo/target"
@ -46,11 +47,11 @@ func pageMust(p *Page, err error) *Page {
return p
}
func TestDegeneraterenderThingMissingTemplate(t *testing.T) {
func TestDegenerateRenderThingMissingTemplate(t *testing.T) {
p, _ := ReadFrom(strings.NewReader(PAGE_SIMPLE_TITLE), "content/a/file.md")
s := new(Site)
s.prepTemplates()
_, err := s.renderThing(p, "foobar")
err := s.renderThing(p, "foobar", nil)
if err == nil {
t.Errorf("Expected err to be returned when missing the template.")
}
@ -65,8 +66,19 @@ func TestAddInvalidTemplate(t *testing.T) {
}
}
type nopCloser struct {
io.Writer
}
func (nopCloser) Close() error { return nil }
func NopCloser(w io.Writer) io.WriteCloser {
return nopCloser{w}
}
func matchRender(t *testing.T, s *Site, p *Page, tmplName string, expected string) {
content, err := s.renderThing(p, tmplName)
content := new(bytes.Buffer)
err := s.renderThing(p, tmplName, NopCloser(content))
if err != nil {
t.Fatalf("Unable to render template.")
}
@ -103,8 +115,9 @@ func TestrenderThing(t *testing.T) {
}
p.Content = template.HTML(p.Content)
html, err2 := s.renderThing(p, templateName)
if err2 != nil {
html := new(bytes.Buffer)
err = s.renderThing(p, templateName, NopCloser(html))
if err != nil {
t.Errorf("Unable to render html: %s", err)
}
@ -151,9 +164,9 @@ func TestRenderThingOrDefault(t *testing.T) {
var err2 error
if test.missing {
err2 = s.render(p, "missing", templateName, "out")
err2 = s.render(p, "out", "missing", templateName)
} else {
err2 = s.render(p, templateName, "missing_default", "out")
err2 = s.render(p, "out", templateName, "missing_default")
}
if err2 != nil {