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// Copyright 2015 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 (
"net/url"
"path"
"path/filepath"
"strings"
"github.com/gohugoio/hugo/common/paths"
)
// URLize is similar to MakePath, but with Unicode handling
// Example:
//
// uri: Vim (text editor)
// urlize: vim-text-editor
func (p *PathSpec) URLize(uri string) string {
return p.URLEscape(p.MakePathSanitized(uri))
}
// URLizeFilename creates an URL from a filename by escaping unicode letters
// and turn any filepath separator into forward slashes.
func (p *PathSpec) URLizeFilename(filename string) string {
return p.URLEscape(filepath.ToSlash(filename))
}
// URLEscape escapes unicode letters.
func (p *PathSpec) URLEscape(uri string) string {
// escape unicode letters
parsedURI, err := url.Parse(uri)
if err != nil {
// if net/url can not parse URL it means Sanitize works incorrectly
panic(err)
}
x := parsedURI.String()
return x
}
// AbsURL creates an absolute URL from the relative path given and the BaseURL set in config.
func (p *PathSpec) AbsURL(in string, addLanguage bool) string {
isAbs, err := p.IsAbsURL(in)
if err != nil {
return in
}
if isAbs || strings.HasPrefix(in, "//") {
// It is already absolute, return it as is.
return in
}
baseURL := p.getBaseURLRoot(in)
if addLanguage {
prefix := p.GetLanguagePrefix()
if prefix != "" {
hasPrefix := false
// avoid adding language prefix if already present
in2 := in
if strings.HasPrefix(in, "/") {
in2 = in[1:]
}
if in2 == prefix {
hasPrefix = true
} else {
hasPrefix = strings.HasPrefix(in2, prefix+"/")
}
if !hasPrefix {
addSlash := in == "" || strings.HasSuffix(in, "/")
in = path.Join(prefix, in)
if addSlash {
in += "/"
}
}
}
}
return paths.MakePermalink(baseURL, in).String()
}
func (p *PathSpec) getBaseURLRoot(path string) string {
if strings.HasPrefix(path, "/") {
// Treat it as relative to the server root.
return p.Cfg.BaseURL().WithoutPath
} else {
// Treat it as relative to the baseURL.
return p.Cfg.BaseURL().WithPath
}
}
func (p *PathSpec) IsAbsURL(in string) (bool, error) {
// Fast path.
if strings.HasPrefix(in, "http://") || strings.HasPrefix(in, "https://") {
return true, nil
}
u, err := url.Parse(in)
if err != nil {
return false, err
}
return u.IsAbs(), nil
}
func (p *PathSpec) RelURL(in string, addLanguage bool) string {
isAbs, err := p.IsAbsURL(in)
if err != nil {
return in
}
baseURL := p.getBaseURLRoot(in)
canonifyURLs := p.Cfg.CanonifyURLs()
if (!strings.HasPrefix(in, baseURL) && isAbs) || strings.HasPrefix(in, "//") {
return in
}
u := in
if strings.HasPrefix(in, baseURL) {
u = strings.TrimPrefix(u, baseURL)
}
if addLanguage {
prefix := p.GetLanguagePrefix()
if prefix != "" {
hasPrefix := false
// avoid adding language prefix if already present
in2 := in
if strings.HasPrefix(in, "/") {
in2 = in[1:]
}
if in2 == prefix {
hasPrefix = true
} else {
hasPrefix = strings.HasPrefix(in2, prefix+"/")
}
if !hasPrefix {
hadSlash := strings.HasSuffix(u, "/")
u = path.Join(prefix, u)
if hadSlash {
u += "/"
}
}
}
}
if !canonifyURLs {
u = paths.AddContextRoot(baseURL, u)
}
if in == "" && !strings.HasSuffix(u, "/") && strings.HasSuffix(baseURL, "/") {
u += "/"
}
if !strings.HasPrefix(u, "/") {
u = "/" + u
}
return u
}
// PrependBasePath prepends any baseURL sub-folder to the given resource
func (p *PathSpec) PrependBasePath(rel string, isAbs bool) string {
basePath := p.GetBasePath(!isAbs)
if basePath != "" {
rel = filepath.ToSlash(rel)
// Need to prepend any path from the baseURL
hadSlash := strings.HasSuffix(rel, "/")
rel = path.Join(basePath, rel)
if hadSlash {
rel += "/"
}
}
return rel
}
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