Print template parsing errors to aid troubleshooting

Added a new Template.PrintErrors() function call,
used in hugolib/site.go#Process() so it does not clutter
up `go test -v ./...` results.

Special thanks to @tatsushid for mapping out the call trace
which makes it a lot easier to find the appropriate places
to place the Template.PrintErrors() call.

Fixes #316

diff --git a/hugolib/site.go b/hugolib/site.go
index 8c8735692c2977b2f918eea2da2ed50922f6cb18..37deacbc245dd110feb6c9ab32da8e698b675c39 100644 (file)
--- a/hugolib/site.go
+++ b/hugolib/site.go
@@ -269,6 +269,7 @@ func (s *Site) Process() (err error) {
                return
        }
        s.prepTemplates()
+       s.Tmpl.PrintErrors()
        s.timerStep("initialize & template prep")
        if err = s.CreatePages(); err != nil {
                return

diff --git a/tpl/template.go b/tpl/template.go
index 86e8ea2c14d8d53f5f91b9b18b954906d8f23156..3377b9a3d67e8d1a3dace6def1e460eadce7b628 100644 (file)
--- a/tpl/template.go
+++ b/tpl/template.go
@@ -50,6 +50,7 @@ type Template interface {
        AddTemplate(name, tpl string) error
        AddInternalTemplate(prefix, name, tpl string) error
        AddInternalShortcode(name, tpl string) error
+       PrintErrors()
 }
 
 type templateErr struct {
@@ -1253,6 +1254,12 @@ func (t *GoHtmlTemplate) LoadTemplates(absPath string) {
        t.loadTemplates(absPath, "")
 }
 
+func (t *GoHtmlTemplate) PrintErrors() {
+       for _, e := range t.errors {
+               jww.ERROR.Println(e.err)
+       }
+}
+
 func init() {
        funcMap = template.FuncMap{
                "urlize":      helpers.Urlize,