ref: d841d522f1ad57d6dd37558b743ef59bd8636d15
dir: /hugolib/template.go/
package hugolib
import (
"io/ioutil"
"github.com/eknkc/amber"
"html/template"
"io"
"os"
"path/filepath"
"strings"
)
// HTML encapsulates a known safe HTML document fragment.
// It should not be used for HTML from a third-party, or HTML with
// unclosed tags or comments. The outputs of a sound HTML sanitizer
// and a template escaped by this package are fine for use with HTML.
type HTML template.HTML
type Template interface {
ExecuteTemplate(wr io.Writer, name string, data interface{}) error
Lookup(name string) *template.Template
Templates() []*template.Template
New(name string) *template.Template
LoadTemplates(absPath string)
AddTemplate(name, tpl string) error
}
type URL template.URL
type templateErr struct {
name string
err error
}
type GoHtmlTemplate struct {
template.Template
errors []*templateErr
}
func NewTemplate() Template {
var templates = &GoHtmlTemplate{
Template: *template.New(""),
errors: make([]*templateErr, 0),
}
funcMap := template.FuncMap{
"urlize": Urlize,
"gt": Gt,
"isset": IsSet,
"echoParam": ReturnWhenSet,
}
templates.Funcs(funcMap)
templates.primeTemplates()
return templates
}
func (t *GoHtmlTemplate) AddTemplate(name, tpl string) error {
_, err := t.New(name).Parse(tpl)
if err != nil {
t.errors = append(t.errors, &templateErr{name: name, err: err})
}
return err
}
func (t *GoHtmlTemplate) AddTemplateFile(name, path string) error {
b, err := ioutil.ReadFile(path)
if err != nil {
return err
}
s := string(b)
_, err = t.New(name).Parse(s)
if err != nil {
t.errors = append(t.errors, &templateErr{name: name, err: err})
}
return err
}
func (t *GoHtmlTemplate) generateTemplateNameFrom(base, path string) string {
return filepath.ToSlash(path[len(base)+1:])
}
func (t *GoHtmlTemplate) primeTemplates() {
alias := "<!DOCTYPE html>\n <html>\n <head>\n <link rel=\"canonical\" href=\"{{ .Permalink }}\"/>\n <meta http-equiv=\"content-type\" content=\"text/html; charset=utf-8\" />\n <meta http-equiv=\"refresh\" content=\"0;url={{ .Permalink }}\" />\n </head>\n </html>"
alias_xhtml := "<!DOCTYPE html>\n <html xmlns=\"http://www.w3.org/1999/xhtml\">\n <head>\n <link rel=\"canonical\" href=\"{{ .Permalink }}\"/>\n <meta http-equiv=\"content-type\" content=\"text/html; charset=utf-8\" />\n <meta http-equiv=\"refresh\" content=\"0;url={{ .Permalink }}\" />\n </head>\n </html>"
t.AddTemplate("alias", alias)
t.AddTemplate("alias-xhtml", alias_xhtml)
}
func (t *GoHtmlTemplate) LoadTemplates(absPath string) {
walker := func(path string, fi os.FileInfo, err error) error {
if err != nil {
PrintErr("Walker: ", err)
return nil
}
if !fi.IsDir() {
if ignoreDotFile(path) {
return nil
}
tplName := t.generateTemplateNameFrom(absPath, path)
if strings.HasSuffix(path, ".amber") {
compiler := amber.New()
// Parse the input file
if err := compiler.ParseFile(path); err != nil {
return nil
}
// note t.New(tplName)
if _, err := compiler.CompileWithTemplate(t.New(tplName)); err != nil {
PrintErr("Could not compile amber file: "+path, err)
return err
}
} else {
t.AddTemplateFile(tplName, path)
}
}
return nil
}
filepath.Walk(absPath, walker)
}