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// Copyright 2018 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 paths
import (
"fmt"
"net/url"
"strings"
)
// A BaseURL in Hugo is normally on the form scheme://path, but the
// form scheme: is also valid (mailto:hugo@rules.com).
type BaseURL struct {
url *url.URL
urlStr string
}
func (b BaseURL) String() string {
return b.urlStr
}
func (b BaseURL) Path() string {
return b.url.Path
}
// WithProtocol returns the BaseURL prefixed with the given protocol.
// The Protocol is normally of the form "scheme://", i.e. "webcal://".
func (b BaseURL) WithProtocol(protocol string) (string, error) {
u := b.URL()
scheme := protocol
isFullProtocol := strings.HasSuffix(scheme, "://")
isOpaqueProtocol := strings.HasSuffix(scheme, ":")
if isFullProtocol {
scheme = strings.TrimSuffix(scheme, "://")
} else if isOpaqueProtocol {
scheme = strings.TrimSuffix(scheme, ":")
}
u.Scheme = scheme
if isFullProtocol && u.Opaque != "" {
u.Opaque = "//" + u.Opaque
} else if isOpaqueProtocol && u.Opaque == "" {
return "", fmt.Errorf("Cannot determine BaseURL for protocol %q", protocol)
}
return u.String(), nil
}
// URL returns a copy of the internal URL.
// The copy can be safely used and modified.
func (b BaseURL) URL() *url.URL {
c := *b.url
return &c
}
func newBaseURLFromString(b string) (BaseURL, error) {
var result BaseURL
base, err := url.Parse(b)
if err != nil {
return result, err
}
return BaseURL{url: base, urlStr: base.String()}, nil
}
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