Avoid reading from Viper for path and URL funcs

The gain, given the "real sites benchmark" below, is obvious:

```
benchmark           old ns/op       new ns/op       delta
BenchmarkHugo-4     14497594101     13084156335     -9.75%

benchmark           old allocs     new allocs     delta
BenchmarkHugo-4     57404335       48282002       -15.89%

benchmark           old bytes       new bytes      delta
BenchmarkHugo-4     9933505624      9721984424     -2.13%
```

Fixes #2495

helpers/configProvider.go

@@ -21,16 +21,55 @@ import (
 	"github.com/spf13/viper"
 )
 
+// A cached version of the current ConfigProvider (language) and relatives. These globals
+// are unfortunate, but we still have some places that needs this that does
+// not have access to the site configuration.
+// These values will be set on initialization when rendering a new language.
+//
+// TODO(bep) Get rid of these.
+var (
+	currentConfigProvider ConfigProvider
+	currentPathSpec       *PathSpec
+)
+
 // ConfigProvider provides the configuration settings for Hugo.
 type ConfigProvider interface {
 	GetString(key string) string
 	GetInt(key string) int
+	GetBool(key string) bool
 	GetStringMap(key string) map[string]interface{}
 	GetStringMapString(key string) map[string]string
+	Get(key string) interface{}
 }
 
 // Config returns the currently active Hugo config. This will be set
 // per site (language) rendered.
 func Config() ConfigProvider {
+	if currentConfigProvider != nil {
+		return currentConfigProvider
+	}
+	// Some tests rely on this. We will fix that, eventually.
 	return viper.Get("CurrentContentLanguage").(ConfigProvider)
 }
+
+// CurrentPathSpec returns the current PathSpec.
+// If it is not set, a new will be created based in the currently active Hugo config.
+func CurrentPathSpec() *PathSpec {
+	if currentPathSpec != nil {
+		return currentPathSpec
+	}
+	// Some tests rely on this. We will fix that, eventually.
+	return NewPathSpecFromConfig(Config())
+}
+
+// InitConfigProviderForCurrentContentLanguage does what it says.
+func InitConfigProviderForCurrentContentLanguage() {
+	currentConfigProvider = viper.Get("CurrentContentLanguage").(ConfigProvider)
+	currentPathSpec = NewPathSpecFromConfig(currentConfigProvider)
+}
+
+// ResetConfigProvider is used in tests.
+func ResetConfigProvider() {
+	currentConfigProvider = nil
+	currentPathSpec = nil
+}

helpers/language.go

@@ -23,6 +23,19 @@ import (
 	"github.com/spf13/viper"
 )
 
+// These are the settings that should only be looked up in the global Viper
+// config and not per language.
+// This list may not be complete, but contains only settings that we know
+// will be looked up in both.
+// This isn't perfect, but it is ultimately the user who shoots him/herself in
+// the foot.
+// See the pathSpec.
+var globalOnlySettings = map[string]bool{
+	strings.ToLower("defaultContentLanguageInSubdir"): true,
+	strings.ToLower("defaultContentLanguage"):         true,
+	strings.ToLower("multilingual"):                   true,
+}
+
 type Language struct {
 	Lang         string
 	LanguageName string
@@ -81,7 +94,7 @@ func (l *Language) Params() map[string]interface{} {
 }
 
 func (l *Language) SetParam(k string, v interface{}) {
-	l.params[k] = v
+	l.params[strings.ToLower(k)] = v
 }
 
 func (l *Language) GetBool(key string) bool     { return cast.ToBool(l.Get(key)) }
@@ -101,8 +114,10 @@ func (l *Language) Get(key string) interface{} {
 		panic("language not set")
 	}
 	key = strings.ToLower(key)
-	if v, ok := l.params[key]; ok {
-		return v
+	if !globalOnlySettings[key] {
+		if v, ok := l.params[key]; ok {
+			return v
+		}
 	}
 	return viper.Get(key)
 }

helpers/language_test.go

@@ -0,0 +1,32 @@
+// Copyright 2016-present The Hugo Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package helpers
+
+import (
+	"testing"
+
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/require"
+)
+
+func TestGetGlobalOnlySetting(t *testing.T) {
+	lang := NewDefaultLanguage()
+	lang.SetParam("defaultContentLanguageInSubdir", false)
+	lang.SetParam("paginatePath", "side")
+	viper.Set("defaultContentLanguageInSubdir", true)
+	viper.Set("paginatePath", "page")
+
+	require.True(t, lang.GetBool("defaultContentLanguageInSubdir"))
+	require.Equal(t, "side", lang.GetString("paginatePath"))
+}

helpers/path.go

@@ -75,16 +75,16 @@ var fpb filepathBridge
 // It does so by creating a Unicode-sanitized string, with the spaces replaced,
 // whilst preserving the original casing of the string.
 // E.g. Social Media -> Social-Media
-func MakePath(s string) string {
-	return UnicodeSanitize(strings.Replace(strings.TrimSpace(s), " ", "-", -1))
+func (p *PathSpec) MakePath(s string) string {
+	return p.UnicodeSanitize(strings.Replace(strings.TrimSpace(s), " ", "-", -1))
 }
 
 // MakePathSanitized creates a Unicode-sanitized string, with the spaces replaced
-func MakePathSanitized(s string) string {
-	if viper.GetBool("DisablePathToLower") {
-		return MakePath(s)
+func (p *PathSpec) MakePathSanitized(s string) string {
+	if p.disablePathToLower {
+		return p.MakePath(s)
 	}
-	return strings.ToLower(MakePath(s))
+	return strings.ToLower(p.MakePath(s))
 }
 
 // MakeTitle converts the path given to a suitable title, trimming whitespace
@@ -110,7 +110,7 @@ func ishex(c rune) bool {
 // a predefined set of special Unicode characters.
 // If RemovePathAccents configuration flag is enabled, Uniccode accents
 // are also removed.
-func UnicodeSanitize(s string) string {
+func (p *PathSpec) UnicodeSanitize(s string) string {
 	source := []rune(s)
 	target := make([]rune, 0, len(source))
 
@@ -124,7 +124,7 @@ func UnicodeSanitize(s string) string {
 
 	var result string
 
-	if viper.GetBool("RemovePathAccents") {
+	if p.removePathAccents {
 		// remove accents - see https://blog.golang.org/normalization
 		t := transform.Chain(norm.NFD, transform.RemoveFunc(isMn), norm.NFC)
 		result, _, _ = transform.String(t, string(target))

helpers/path_test.go

@@ -33,9 +33,14 @@ import (
 	"github.com/spf13/viper"
 )
 
+func initCommonTestConfig() {
+	viper.Set("CurrentContentLanguage", NewLanguage("en"))
+}
+
 func TestMakePath(t *testing.T) {
 	viper.Reset()
 	defer viper.Reset()
+	initCommonTestConfig()
 
 	tests := []struct {
 		input         string
@@ -57,7 +62,8 @@ func TestMakePath(t *testing.T) {
 
 	for _, test := range tests {
 		viper.Set("RemovePathAccents", test.removeAccents)
-		output := MakePath(test.input)
+		p := NewPathSpecFromConfig(viper.GetViper())
+		output := p.MakePath(test.input)
 		if output != test.expected {
 			t.Errorf("Expected %#v, got %#v\n", test.expected, output)
 		}
@@ -67,6 +73,9 @@ func TestMakePath(t *testing.T) {
 func TestMakePathSanitized(t *testing.T) {
 	viper.Reset()
 	defer viper.Reset()
+	initCommonTestConfig()
+
+	p := NewPathSpecFromConfig(viper.GetViper())
 
 	tests := []struct {
 		input    string
@@ -81,7 +90,7 @@ func TestMakePathSanitized(t *testing.T) {
 	}
 
 	for _, test := range tests {
-		output := MakePathSanitized(test.input)
+		output := p.MakePathSanitized(test.input)
 		if output != test.expected {
 			t.Errorf("Expected %#v, got %#v\n", test.expected, output)
 		}
@@ -91,7 +100,10 @@ func TestMakePathSanitized(t *testing.T) {
 func TestMakePathSanitizedDisablePathToLower(t *testing.T) {
 	viper.Reset()
 	defer viper.Reset()
+
+	initCommonTestConfig()
 	viper.Set("DisablePathToLower", true)
+	p := NewPathSpecFromConfig(viper.GetViper())
 
 	tests := []struct {
 		input    string
@@ -106,7 +118,7 @@ func TestMakePathSanitizedDisablePathToLower(t *testing.T) {
 	}
 
 	for _, test := range tests {
-		output := MakePathSanitized(test.input)
+		output := p.MakePathSanitized(test.input)
 		if output != test.expected {
 			t.Errorf("Expected %#v, got %#v\n", test.expected, output)
 		}

helpers/pathspec.go

@@ -0,0 +1,54 @@
+// Copyright 2016-present The Hugo Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package helpers
+
+// PathSpec holds methods that decides how paths in URLs and files in Hugo should look like.
+type PathSpec struct {
+	disablePathToLower bool
+	removePathAccents  bool
+	uglyURLs           bool
+	canonifyURLs       bool
+
+	currentContentLanguage *Language
+
+	// pagination path handling
+	paginatePath string
+
+	// The PathSpec looks up its config settings in both the current language
+	// and then in the global Viper config.
+	// Some settings, the settings listed below, does not make sense to be set
+	// on per-language-basis. We have no good way of protecting against this
+	// other than a "white-list". See language.go.
+	defaultContentLanguageInSubdir bool
+	defaultContentLanguage         string
+	multilingual                   bool
+}
+
+func NewPathSpecFromConfig(config ConfigProvider) *PathSpec {
+	return &PathSpec{
+		disablePathToLower:             config.GetBool("disablePathToLower"),
+		removePathAccents:              config.GetBool("removePathAccents"),
+		uglyURLs:                       config.GetBool("uglyURLs"),
+		canonifyURLs:                   config.GetBool("canonifyURLs"),
+		multilingual:                   config.GetBool("multilingual"),
+		defaultContentLanguageInSubdir: config.GetBool("defaultContentLanguageInSubdir"),
+		defaultContentLanguage:         config.GetString("defaultContentLanguage"),
+		currentContentLanguage:         config.Get("currentContentLanguage").(*Language),
+		paginatePath:                   config.GetString("paginatePath"),
+	}
+}
+
+func (p *PathSpec) PaginatePath() string {
+	return p.paginatePath
+}

helpers/pathspec_test.go

@@ -0,0 +1,45 @@
+// Copyright 2016-present The Hugo Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package helpers
+
+import (
+	"testing"
+
+	"github.com/spf13/viper"
+	"github.com/stretchr/testify/require"
+)
+
+func TestNewPathSpecFromConfig(t *testing.T) {
+	viper.Set("disablePathToLower", true)
+	viper.Set("removePathAccents", true)
+	viper.Set("uglyURLs", true)
+	viper.Set("multilingual", true)
+	viper.Set("defaultContentLanguageInSubdir", true)
+	viper.Set("defaultContentLanguage", "no")
+	viper.Set("currentContentLanguage", NewLanguage("no"))
+	viper.Set("canonifyURLs", true)
+	viper.Set("paginatePath", "side")
+
+	pathSpec := NewPathSpecFromConfig(viper.GetViper())
+
+	require.True(t, pathSpec.canonifyURLs)
+	require.True(t, pathSpec.defaultContentLanguageInSubdir)
+	require.True(t, pathSpec.disablePathToLower)
+	require.True(t, pathSpec.multilingual)
+	require.True(t, pathSpec.removePathAccents)
+	require.True(t, pathSpec.uglyURLs)
+	require.Equal(t, "no", pathSpec.defaultContentLanguage)
+	require.Equal(t, "no", pathSpec.currentContentLanguage.Lang)
+	require.Equal(t, "side", pathSpec.paginatePath)
+}

helpers/url.go

@@ -101,8 +101,8 @@ func SanitizeURLKeepTrailingSlash(in string) string {
 // Example:
 //     uri: Vim (text editor)
 //     urlize: vim-text-editor
-func URLize(uri string) string {
-	sanitized := MakePathSanitized(uri)
+func (p *PathSpec) URLize(uri string) string {
+	sanitized := p.MakePathSanitized(uri)
 
 	// escape unicode letters
 	parsedURI, err := url.Parse(sanitized)
@@ -147,7 +147,7 @@ func MakePermalink(host, plink string) *url.URL {
 }
 
 // AbsURL creates a absolute URL from the relative path given and the BaseURL set in config.
-func AbsURL(in string, addLanguage bool) string {
+func (p *PathSpec) AbsURL(in string, addLanguage bool) string {
 	url, err := url.Parse(in)
 	if err != nil {
 		return in
@@ -168,7 +168,7 @@ func AbsURL(in string, addLanguage bool) string {
 	}
 
 	if addLanguage {
-		prefix := getLanguagePrefix()
+		prefix := p.getLanguagePrefix()
 		if prefix != "" {
 			hasPrefix := false
 			// avoid adding language prefix if already present
@@ -191,15 +191,15 @@ func AbsURL(in string, addLanguage bool) string {
 	return MakePermalink(baseURL, in).String()
 }
 
-func getLanguagePrefix() string {
-	if !viper.GetBool("Multilingual") {
+func (p *PathSpec) getLanguagePrefix() string {
+	if !p.multilingual {
 		return ""
 	}
 
-	defaultLang := viper.GetString("DefaultContentLanguage")
-	defaultInSubDir := viper.GetBool("DefaultContentLanguageInSubdir")
+	defaultLang := p.defaultContentLanguage
+	defaultInSubDir := p.defaultContentLanguageInSubdir
 
-	currentLang := viper.Get("CurrentContentLanguage").(*Language).Lang
+	currentLang := p.currentContentLanguage.Lang
 	if currentLang == "" || (currentLang == defaultLang && !defaultInSubDir) {
 		return ""
 	}
@@ -218,9 +218,9 @@ func IsAbsURL(path string) bool {
 
 // RelURL creates a URL relative to the BaseURL root.
 // Note: The result URL will not include the context root if canonifyURLs is enabled.
-func RelURL(in string, addLanguage bool) string {
+func (p *PathSpec) RelURL(in string, addLanguage bool) string {
 	baseURL := viper.GetString("BaseURL")
-	canonifyURLs := viper.GetBool("canonifyURLs")
+	canonifyURLs := p.canonifyURLs
 	if (!strings.HasPrefix(in, baseURL) && strings.HasPrefix(in, "http")) || strings.HasPrefix(in, "//") {
 		return in
 	}
@@ -232,7 +232,7 @@ func RelURL(in string, addLanguage bool) string {
 	}
 
 	if addLanguage {
-		prefix := getLanguagePrefix()
+		prefix := p.getLanguagePrefix()
 		if prefix != "" {
 			hasPrefix := false
 			// avoid adding language prefix if already present
@@ -288,8 +288,8 @@ func AddContextRoot(baseURL, relativePath string) string {
 	return newPath
 }
 
-func URLizeAndPrep(in string) string {
-	return URLPrep(viper.GetBool("UglyURLs"), URLize(in))
+func (p *PathSpec) URLizeAndPrep(in string) string {
+	return URLPrep(p.uglyURLs, p.URLize(in))
 }
 
 func URLPrep(ugly bool, in string) string {

helpers/url_test.go

@@ -24,6 +24,10 @@ import (
 )
 
 func TestURLize(t *testing.T) {
+	initCommonTestConfig()
+
+	p := NewPathSpecFromConfig(viper.GetViper())
+
 	tests := []struct {
 		input    string
 		expected string
@@ -37,7 +41,7 @@ func TestURLize(t *testing.T) {
 	}
 
 	for _, test := range tests {
-		output := URLize(test.input)
+		output := p.URLize(test.input)
 		if output != test.expected {
 			t.Errorf("Expected %#v, got %#v\n", test.expected, output)
 		}
@@ -83,7 +87,8 @@ func doTestAbsURL(t *testing.T, defaultInSubDir, addLanguage, multilingual bool,
 
 	for _, test := range tests {
 		viper.Set("BaseURL", test.baseURL)
-		output := AbsURL(test.input, addLanguage)
+		p := NewPathSpecFromConfig(viper.GetViper())
+		output := p.AbsURL(test.input, addLanguage)
 		expected := test.expected
 		if multilingual && addLanguage {
 			if !defaultInSubDir && lang == "en" {
@@ -159,8 +164,9 @@ func doTestRelURL(t *testing.T, defaultInSubDir, addLanguage, multilingual bool,
 	for i, test := range tests {
 		viper.Set("BaseURL", test.baseURL)
 		viper.Set("canonifyURLs", test.canonify)
+		p := NewPathSpecFromConfig(viper.GetViper())
 
-		output := RelURL(test.input, addLanguage)
+		output := p.RelURL(test.input, addLanguage)
 
 		expected := test.expected
 		if multilingual && addLanguage {

hugolib/hugo_sites_test.go

@@ -35,6 +35,7 @@ func testCommonResetState() {
 	hugofs.InitMemFs()
 	viper.Reset()
 	viper.SetFs(hugofs.Source())
+	helpers.ResetConfigProvider()
 	loadDefaultSettings()
 
 	// Default is false, but true is easier to use as default in tests

hugolib/node.go

@@ -178,7 +178,7 @@ func (n *Node) URL() string {
 }
 
 func (n *Node) Permalink() string {
-	return permalink(n.URL())
+	return n.Site.permalink(n.URL())
 }
 
 // Scratch returns the writable context associated with this Node.

hugolib/page.go

@@ -569,9 +569,9 @@ func (p *Page) analyzePage() {
 
 func (p *Page) permalink() (*url.URL, error) {
 	baseURL := string(p.Site.BaseURL)
-	dir := strings.TrimSpace(helpers.MakePath(filepath.ToSlash(strings.ToLower(p.Source.Dir()))))
-	pSlug := strings.TrimSpace(helpers.URLize(p.Slug))
-	pURL := strings.TrimSpace(helpers.URLize(p.URLPath.URL))
+	dir := strings.TrimSpace(p.Site.pathSpec.MakePath(filepath.ToSlash(strings.ToLower(p.Source.Dir()))))
+	pSlug := strings.TrimSpace(p.Site.pathSpec.URLize(p.Slug))
+	pURL := strings.TrimSpace(p.Site.pathSpec.URLize(p.URLPath.URL))
 	var permalink string
 	var err error
 
@@ -1171,5 +1171,6 @@ func (p *Page) TargetPath() (outfile string) {
 		outfile = helpers.ReplaceExtension(p.Source.TranslationBaseName(), p.Extension())
 	}
 
-	return p.addLangFilepathPrefix(filepath.Join(strings.ToLower(helpers.MakePath(p.Source.Dir())), strings.TrimSpace(outfile)))
+	return p.addLangFilepathPrefix(filepath.Join(strings.ToLower(
+		p.Site.pathSpec.MakePath(p.Source.Dir())), strings.TrimSpace(outfile)))
 }

hugolib/pageSort_test.go

@@ -20,6 +20,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/spf13/hugo/helpers"
 	"github.com/spf13/hugo/source"
 	"github.com/stretchr/testify/assert"
 )
@@ -134,6 +135,8 @@ func setSortVals(dates [3]time.Time, titles [3]string, weights [3]int, pages Pag
 func createSortTestPages(num int) Pages {
 	pages := make(Pages, num)
 
+	info := newSiteInfo(siteBuilderCfg{baseURL: "http://base", language: helpers.NewDefaultLanguage()})
+
 	for i := 0; i < num; i++ {
 		pages[i] = &Page{
 			Node: Node{
@@ -141,7 +144,7 @@ func createSortTestPages(num int) Pages {
 					Section: "z",
 					URL:     fmt.Sprintf("http://base/x/y/p%d.html", i),
 				},
-				Site: newSiteInfoDefaultLanguage("http://base/"),
+				Site: &info,
 			},
 			Source: Source{File: *source.NewFile(filepath.FromSlash(fmt.Sprintf("/x/y/p%d.md", i)))},
 		}

hugolib/page_permalink_test.go

@@ -18,6 +18,7 @@ import (
 	"path/filepath"
 	"testing"
 
+	"github.com/spf13/hugo/helpers"
 	"github.com/spf13/hugo/source"
 	"github.com/spf13/viper"
 )
@@ -59,17 +60,18 @@ func TestPermalink(t *testing.T) {
 	}
 
 	viper.Set("DefaultExtension", "html")
-
 	for i, test := range tests {
 		viper.Set("uglyurls", test.uglyURLs)
 		viper.Set("canonifyurls", test.canonifyURLs)
+		info := newSiteInfo(siteBuilderCfg{baseURL: string(test.base), language: helpers.NewDefaultLanguage()})
+
 		p := &Page{
 			Node: Node{
 				URLPath: URLPath{
 					Section: "z",
 					URL:     test.url,
 				},
-				Site: newSiteInfoDefaultLanguage(string(test.base)),
+				Site: &info,
 			},
 			Source: Source{File: *source.NewFile(filepath.FromSlash(test.file))},
 		}

hugolib/page_test.go

@@ -1122,7 +1122,8 @@ func TestPagePaths(t *testing.T) {
 
 	for _, test := range tests {
 		p, _ := NewPageFrom(strings.NewReader(test.content), filepath.FromSlash(test.path))
-		p.Node.Site = newSiteInfoDefaultLanguage("")
+		info := newSiteInfo(siteBuilderCfg{language: helpers.NewDefaultLanguage()})
+		p.Node.Site = &info
 
 		if test.hasPermalink {
 			p.Node.Site.Permalinks = siteParmalinksSetting

hugolib/pagination.go

@@ -508,16 +508,16 @@ func newPaginator(elements []paginatedElement, total, size int, urlFactory pagin
 }
 
 func newPaginationURLFactory(pathElements ...string) paginationURLFactory {
-	paginatePath := helpers.Config().GetString("paginatePath")
+	pathSpec := helpers.CurrentPathSpec()
 
 	return func(page int) string {
 		var rel string
 		if page == 1 {
 			rel = fmt.Sprintf("/%s/", path.Join(pathElements...))
 		} else {
-			rel = fmt.Sprintf("/%s/%s/%d/", path.Join(pathElements...), paginatePath, page)
+			rel = fmt.Sprintf("/%s/%s/%d/", path.Join(pathElements...), pathSpec.PaginatePath(), page)
 		}
 
-		return helpers.URLizeAndPrep(rel)
+		return pathSpec.URLizeAndPrep(rel)
 	}
 }

hugolib/pagination_test.go

@@ -19,6 +19,7 @@ import (
 	"path/filepath"
 	"testing"
 
+	"github.com/spf13/hugo/helpers"
 	"github.com/spf13/hugo/source"
 	"github.com/spf13/viper"
 	"github.com/stretchr/testify/assert"
@@ -453,6 +454,7 @@ func TestPage(t *testing.T) {
 func createTestPages(num int) Pages {
 	pages := make(Pages, num)
 
+	info := newSiteInfo(siteBuilderCfg{baseURL: "http://base/", language: helpers.NewDefaultLanguage()})
 	for i := 0; i < num; i++ {
 		pages[i] = &Page{
 			Node: Node{
@@ -460,7 +462,7 @@ func createTestPages(num int) Pages {
 					Section: "z",
 					URL:     fmt.Sprintf("http://base/x/y/p%d.html", i),
 				},
-				Site: newSiteInfoDefaultLanguage("http://base/"),
+				Site: &info,
 			},
 			Source: Source{File: *source.NewFile(filepath.FromSlash(fmt.Sprintf("/x/y/p%d.md", i)))},
 		}

hugolib/permalinks.go

@@ -19,8 +19,6 @@ import (
 	"regexp"
 	"strconv"
 	"strings"
-
-	"github.com/spf13/hugo/helpers"
 )
 
 // pathPattern represents a string which builds up a URL from attributes
@@ -152,14 +150,14 @@ func pageToPermalinkDate(p *Page, dateField string) (string, error) {
 func pageToPermalinkTitle(p *Page, _ string) (string, error) {
 	// Page contains Node which has Title
 	// (also contains URLPath which has Slug, sometimes)
-	return helpers.URLize(p.Title), nil
+	return p.Site.pathSpec.URLize(p.Title), nil
 }
 
 // pageToPermalinkFilename returns the URL-safe form of the filename
 func pageToPermalinkFilename(p *Page, _ string) (string, error) {
 	//var extension = p.Source.Ext
 	//var name = p.Source.Path()[0 : len(p.Source.Path())-len(extension)]
-	return helpers.URLize(p.Source.TranslationBaseName()), nil
+	return p.Site.pathSpec.URLize(p.Source.TranslationBaseName()), nil
 }
 
 // if the page has a slug, return the slug, else return the title
@@ -173,7 +171,7 @@ func pageToPermalinkSlugElseTitle(p *Page, a string) (string, error) {
 		if strings.HasSuffix(p.Slug, "-") {
 			p.Slug = p.Slug[0 : len(p.Slug)-1]
 		}
-		return helpers.URLize(p.Slug), nil
+		return p.Site.pathSpec.URLize(p.Slug), nil
 	}
 	return pageToPermalinkTitle(p, a)
 }

hugolib/permalinks_test.go

@@ -16,6 +16,8 @@ package hugolib
 import (
 	"strings"
 	"testing"
+
+	"github.com/spf13/hugo/helpers"
 )
 
 // testdataPermalinks is used by a couple of tests; the expandsTo content is
@@ -70,6 +72,8 @@ func TestPermalinkValidation(t *testing.T) {
 
 func TestPermalinkExpansion(t *testing.T) {
 	page, err := NewPageFrom(strings.NewReader(simplePageJSON), "blue/test-page.md")
+	info := newSiteInfo(siteBuilderCfg{language: helpers.NewDefaultLanguage()})
+	page.Site = &info
 	if err != nil {
 		t.Fatalf("failed before we began, could not parse SIMPLE_PAGE_JSON: %s", err)
 	}

hugolib/site.go

@@ -117,7 +117,8 @@ func (s *Site) reset() *Site {
 
 // newSite creates a new site in the given language.
 func newSite(lang *helpers.Language) *Site {
-	return &Site{Language: lang, Info: SiteInfo{multilingual: newMultiLingualForLanguage(lang)}}
+	return &Site{Language: lang, Info: newSiteInfo(siteBuilderCfg{language: lang})}
+
 }
 
 // newSite creates a new site in the default language.
@@ -139,9 +140,12 @@ func newSiteFromSources(pathContentPairs ...string) *Site {
 		sources = append(sources, source.ByteSource{Name: filepath.FromSlash(path), Content: []byte(content)})
 	}
 
+	lang := helpers.NewDefaultLanguage()
+
 	return &Site{
 		Source:   &source.InMemorySource{ByteSource: sources},
-		Language: helpers.NewDefaultLanguage(),
+		Language: lang,
+		Info:     newSiteInfo(siteBuilderCfg{language: lang}),
 	}
 }
 
@@ -195,16 +199,25 @@ type SiteInfo struct {
 	LanguagePrefix                 string
 	Languages                      helpers.Languages
 	defaultContentLanguageInSubdir bool
+
+	pathSpec *helpers.PathSpec
 }
 
 // Used in tests.
-func newSiteInfoDefaultLanguage(baseURL string, pages ...*Page) *SiteInfo {
-	ps := Pages(pages)
 
-	return &SiteInfo{
-		BaseURL:      template.URL(baseURL),
-		rawAllPages:  &ps,
-		multilingual: newMultiLingualDefaultLanguage(),
+type siteBuilderCfg struct {
+	language *helpers.Language
+	baseURL  string
+
+	pages *Pages
+}
+
+func newSiteInfo(cfg siteBuilderCfg) SiteInfo {
+	return SiteInfo{
+		BaseURL:      template.URL(cfg.baseURL),
+		rawAllPages:  cfg.pages,
+		pathSpec:     helpers.NewPathSpecFromConfig(cfg.language),
+		multilingual: newMultiLingualForLanguage(cfg.language),
 	}
 }
 
@@ -808,7 +821,9 @@ func (s *Site) setCurrentLanguageConfig() error {
 	// There are sadly some global template funcs etc. that need the language information.
 	viper.Set("Multilingual", s.multilingualEnabled())
 	viper.Set("CurrentContentLanguage", s.Language)
-	return tpl.SetTranslateLang(s.Language.Lang)
+	// Cache the current config.
+	helpers.InitConfigProviderForCurrentContentLanguage()
+	return tpl.SetTranslateLang(s.Language)
 }
 
 func (s *Site) render() (err error) {
@@ -887,7 +902,7 @@ func (s *SiteInfo) HomeAbsURL() string {
 	if s.IsMultiLingual() {
 		base = s.Language.Lang
 	}
-	return helpers.AbsURL(base, false)
+	return s.pathSpec.AbsURL(base, false)
 }
 
 // SitemapAbsURL is a convenience method giving the absolute URL to the sitemap.
@@ -946,7 +961,6 @@ func (s *Site) initializeSiteInfo() {
 		Languages:                      languages,
 		defaultContentLanguageInSubdir: defaultContentInSubDir,
 		GoogleAnalytics:                lang.GetString("GoogleAnalytics"),
-		RSSLink:                        permalinkStr(lang.GetString("RSSUri")),
 		BuildDrafts:                    viper.GetBool("BuildDrafts"),
 		canonifyURLs:                   viper.GetBool("CanonifyURLs"),
 		preserveTaxonomyNames:          lang.GetBool("PreserveTaxonomyNames"),
@@ -959,7 +973,10 @@ func (s *Site) initializeSiteInfo() {
 		Permalinks:                     permalinks,
 		Data:                           &s.Data,
 		owner:                          s.owner,
+		pathSpec:                       helpers.NewPathSpecFromConfig(lang),
 	}
+
+	s.Info.RSSLink = s.Info.permalinkStr(lang.GetString("RSSUri"))
 }
 
 func (s *Site) hasTheme() bool {
@@ -1407,7 +1424,7 @@ func (s *SiteInfo) createNodeMenuEntryURL(in string) string {
 	}
 	// make it match the nodes
 	menuEntryURL := in
-	menuEntryURL = helpers.SanitizeURLKeepTrailingSlash(helpers.URLize(menuEntryURL))
+	menuEntryURL = helpers.SanitizeURLKeepTrailingSlash(s.pathSpec.URLize(menuEntryURL))
 	if !s.canonifyURLs {
 		menuEntryURL = helpers.AddContextRoot(string(s.BaseURL), menuEntryURL)
 	}
@@ -1586,13 +1603,13 @@ func (s *Site) renderAliases() error {
 	if s.owner.multilingual.enabled() {
 		mainLang := s.owner.multilingual.DefaultLang.Lang
 		if s.Info.defaultContentLanguageInSubdir {
-			mainLangURL := helpers.AbsURL(mainLang, false)
+			mainLangURL := s.Info.pathSpec.AbsURL(mainLang, false)
 			jww.DEBUG.Printf("Write redirect to main language %s: %s", mainLang, mainLangURL)
 			if err := s.publishDestAlias(s.languageAliasTarget(), "/", mainLangURL, nil); err != nil {
 				return err
 			}
 		} else {
-			mainLangURL := helpers.AbsURL("", false)
+			mainLangURL := s.Info.pathSpec.AbsURL("", false)
 			jww.DEBUG.Printf("Write redirect to main language %s: %s", mainLang, mainLangURL)
 			if err := s.publishDestAlias(s.languageAliasTarget(), mainLang, mainLangURL, nil); err != nil {
 				return err
@@ -1763,7 +1780,7 @@ func (s *Site) newTaxonomyNode(prepare bool, t taxRenderInfo, counter int) (*Nod
 	n := s.nodeLookup(fmt.Sprintf("tax-%s-%s", t.plural, key), counter, prepare)
 
 	if s.Info.preserveTaxonomyNames {
-		key = helpers.MakePathSanitized(key)
+		key = s.Info.pathSpec.MakePathSanitized(key)
 	}
 	base := t.plural + "/" + key
 
@@ -1952,7 +1969,7 @@ func (s *Site) renderSectionLists(prepare bool) error {
 			[]string{"section/" + section + ".html", "_default/section.html", "_default/list.html", "indexes/" + section + ".html", "_default/indexes.html"})
 
 		if s.Info.preserveTaxonomyNames {
-			section = helpers.MakePathSanitized(section)
+			section = s.Info.pathSpec.MakePathSanitized(section)
 		}
 
 		base := n.addLangPathPrefix(section)
@@ -1966,7 +1983,7 @@ func (s *Site) renderSectionLists(prepare bool) error {
 			paginatePath := helpers.Config().GetString("paginatePath")
 
 			// write alias for page 1
-			s.writeDestAlias(helpers.PaginateAliasPath(base, 1), permalink(base), nil)
+			s.writeDestAlias(helpers.PaginateAliasPath(base, 1), s.Info.permalink(base), nil)
 
 			pagers := n.paginator.Pagers()
 
@@ -2111,6 +2128,15 @@ func (s *Site) newHomeNode(prepare bool, counter int) *Node {
 	return n
 }
 
+func (s *Site) newPage() *Page {
+	page := &Page{}
+	page.language = s.Language
+	page.Date = s.Info.LastChange
+	page.Lastmod = s.Info.LastChange
+	page.Site = &s.Info
+	return page
+}
+
 func (s *Site) renderSitemap() error {
 	if viper.GetBool("DisableSitemap") {
 		return nil
@@ -2123,11 +2149,7 @@ func (s *Site) renderSitemap() error {
 	// Prepend homepage to the list of pages
 	pages := make(Pages, 0)
 
-	page := &Page{}
-	page.language = s.Language
-	page.Date = s.Info.LastChange
-	page.Lastmod = s.Info.LastChange
-	page.Site = &s.Info
+	page := s.newPage()
 	page.URLPath.URL = ""
 	page.Sitemap.ChangeFreq = sitemapDefault.ChangeFreq
 	page.Sitemap.Priority = sitemapDefault.Priority
@@ -2199,18 +2221,21 @@ func (s *Site) Stats() {
 }
 
 func (s *Site) setURLs(n *Node, in string) {
-	n.URLPath.URL = helpers.URLizeAndPrep(in)
-	n.URLPath.Permalink = permalink(n.URLPath.URL)
-	n.RSSLink = template.HTML(permalink(in + ".xml"))
+	n.URLPath.URL = s.Info.pathSpec.URLizeAndPrep(in)
+	n.URLPath.Permalink = s.Info.permalink(n.URLPath.URL)
+	n.RSSLink = template.HTML(s.Info.permalink(in + ".xml"))
 }
 
-func permalink(plink string) string {
-	return permalinkStr(plink)
+func (s *SiteInfo) permalink(plink string) string {
+	return s.permalinkStr(plink)
 }
 
-func permalinkStr(plink string) string {
-	return helpers.MakePermalink(viper.GetString("BaseURL"), helpers.URLizeAndPrep(plink)).String()
+func (s *SiteInfo) permalinkStr(plink string) string {
+	return helpers.MakePermalink(
+		viper.GetString("BaseURL"),
+		s.pathSpec.URLizeAndPrep(plink)).String()
 }
+
 func (s *Site) newNode(nodeID string) *Node {
 	return s.nodeLookup(nodeID, 0, true)
 }

hugolib/taxonomy.go

@@ -52,7 +52,7 @@ type OrderedTaxonomyEntry struct {
 
 // KeyPrep... Taxonomies should be case insensitive. Can make it easily conditional later.
 func kp(in string) string {
-	return helpers.MakePathSanitized(in)
+	return helpers.CurrentPathSpec().MakePathSanitized(in)
 }
 
 // Get the weighted pages for the given key.

tpl/template.go

@@ -94,6 +94,10 @@ func New() Template {
 
 	localTemplates = &templates.Template
 
+	// The URL funcs in the funcMap is somewhat language dependent,
+	// so need to be reinit per site.
+	initFuncMap()
+
 	for k, v := range funcMap {
 		amber.FuncMap[k] = v
 	}

tpl/template_funcs.go

@@ -47,7 +47,9 @@ import (
 	"github.com/spf13/viper"
 )
 
-var funcMap template.FuncMap
+var (
+	funcMap template.FuncMap
+)
 
 // eq returns the boolean truth of arg1 == arg2.
 func eq(x, y interface{}) bool {
@@ -1940,7 +1942,7 @@ func absURL(a interface{}) (template.HTML, error) {
 	if err != nil {
 		return "", nil
 	}
-	return template.HTML(helpers.AbsURL(s, false)), nil
+	return template.HTML(helpers.CurrentPathSpec().AbsURL(s, false)), nil
 }
 
 func relURL(a interface{}) (template.HTML, error) {
@@ -1948,10 +1950,10 @@ func relURL(a interface{}) (template.HTML, error) {
 	if err != nil {
 		return "", nil
 	}
-	return template.HTML(helpers.RelURL(s, false)), nil
+	return template.HTML(helpers.CurrentPathSpec().RelURL(s, false)), nil
 }
 
-func init() {
+func initFuncMap() {
 	funcMap = template.FuncMap{
 		"absURL": absURL,
 		"absLangURL": func(i interface{}) (template.HTML, error) {
@@ -1959,7 +1961,7 @@ func init() {
 			if err != nil {
 				return "", err
 			}
-			return template.HTML(helpers.AbsURL(s, true)), nil
+			return template.HTML(helpers.CurrentPathSpec().AbsURL(s, true)), nil
 		},
 		"add":           func(a, b interface{}) (interface{}, error) { return helpers.DoArithmetic(a, b, '+') },
 		"after":         after,
@@ -2020,7 +2022,7 @@ func init() {
 			if err != nil {
 				return "", err
 			}
-			return template.HTML(helpers.RelURL(s, true)), nil
+			return template.HTML(helpers.CurrentPathSpec().RelURL(s, true)), nil
 		},
 		"relref":       relRef,
 		"replace":      replace,
@@ -2047,7 +2049,7 @@ func init() {
 		"time":         asTime,
 		"trim":         trim,
 		"upper":        func(a string) string { return strings.ToUpper(a) },
-		"urlize":       helpers.URLize,
+		"urlize":       helpers.CurrentPathSpec().URLize,
 		"where":        where,
 		"i18n":         I18nTranslate,
 		"T":            I18nTranslate,

tpl/template_funcs_test.go

@@ -63,6 +63,11 @@ func tstIsLt(tp tstCompareType) bool {
 	return tp == tstLt || tp == tstLe
 }
 
+func tstInitTemplates() {
+	viper.Set("CurrentContentLanguage", helpers.NewLanguage("en"))
+	helpers.ResetConfigProvider()
+}
+
 func TestFuncsInTemplate(t *testing.T) {
 
 	viper.Reset()
@@ -234,6 +239,8 @@ urlize: bat-man
 
 	viper.Set("baseURL", "http://mysite.com/hugo/")
 
+	tstInitTemplates()
+
 	if err != nil {
 		t.Fatal("Got error on parse", err)
 	}
@@ -2498,6 +2505,7 @@ func TestPartialCached(t *testing.T) {
 	data.Section = "blog"
 	data.Params = map[string]interface{}{"langCode": "en"}
 
+	tstInitTemplates()
 	InitializeT()
 	for i, tc := range testCases {
 		var tmp string

tpl/template_i18n.go

@@ -25,6 +25,7 @@ import (
 var (
 	Logi18nWarnings   bool
 	i18nWarningLogger = helpers.NewDistinctFeedbackLogger()
+	currentLanguage   *helpers.Language
 )
 
 type translate struct {
@@ -37,11 +38,12 @@ var translator *translate
 
 // SetTranslateLang sets the translations language to use during template processing.
 // This construction is unfortunate, but the template system is currently global.
-func SetTranslateLang(lang string) error {
-	if f, ok := translator.translateFuncs[lang]; ok {
+func SetTranslateLang(language *helpers.Language) error {
+	currentLanguage = language
+	if f, ok := translator.translateFuncs[language.Lang]; ok {
 		translator.current = f
 	} else {
-		jww.WARN.Printf("Translation func for language %v not found, use default.", lang)
+		jww.WARN.Printf("Translation func for language %v not found, use default.", language.Lang)
 		translator.current = translator.translateFuncs[viper.GetString("DefaultContentLanguage")]
 	}
 	return nil

tpl/template_i18n_test.go

@@ -17,6 +17,7 @@ import (
 	"testing"
 
 	"github.com/nicksnyder/go-i18n/i18n/bundle"
+	"github.com/spf13/hugo/helpers"
 	"github.com/spf13/viper"
 	"github.com/stretchr/testify/assert"
 )
@@ -116,7 +117,7 @@ func doTestI18nTranslate(t *testing.T, data map[string][]byte, lang, id string,
 	}
 
 	SetI18nTfuncs(i18nBundle)
-	SetTranslateLang(lang)
+	SetTranslateLang(helpers.NewLanguage(lang))
 
 	translated, err := I18nTranslate(id, args)
 	if err != nil {
@@ -129,6 +130,7 @@ func TestI18nTranslate(t *testing.T) {
 	var actual, expected string
 
 	viper.SetDefault("DefaultContentLanguage", "en")
+	viper.Set("CurrentContentLanguage", helpers.NewLanguage("en"))
 
 	// Test without and with placeholders
 	for _, enablePlaceholders := range []bool{false, true} {