hugo helpers 源码
hugo helpers 代码
文件路径：/commands/helpers.go
// 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 commands defines and implements command-line commands and flags
// used by Hugo. Commands and flags are implemented using Cobra.
package commands
import (
"fmt"
"regexp"
"github.com/gohugoio/hugo/config"
"github.com/spf13/cobra"
)
const (
ansiEsc = "\u001B"
clearLine = "\r\033[K"
hideCursor = ansiEsc + "[?25l"
showCursor = ansiEsc + "[?25h"
)
type flagsToConfigHandler interface {
flagsToConfig(cfg config.Provider)
}
type cmder interface {
flagsToConfigHandler
getCommand() *cobra.Command
}
// commandError is an error used to signal different error situations in command handling.
type commandError struct {
s string
userError bool
}
func (c commandError) Error() string {
return c.s
}
func (c commandError) isUserError() bool {
return c.userError
}
func newUserError(a ...any) commandError {
return commandError{s: fmt.Sprintln(a...), userError: true}
}
func newSystemError(a ...any) commandError {
return commandError{s: fmt.Sprintln(a...), userError: false}
}
func newSystemErrorF(format string, a ...any) commandError {
return commandError{s: fmt.Sprintf(format, a...), userError: false}
}
// Catch some of the obvious user errors from Cobra.
// We don't want to show the usage message for every error.
// The below may be to generic. Time will show.
var userErrorRegexp = regexp.MustCompile("unknown flag")
func isUserError(err error) bool {
if cErr, ok := err.(commandError); ok && cErr.isUserError() {
return true
}
return userErrorRegexp.MatchString(err.Error())
}
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