80 lines
2.1 KiB
Go
80 lines
2.1 KiB
Go
// Copyright 2018 The Hugo Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Package commands defines and implements command-line commands and flags
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// used by Hugo. Commands and flags are implemented using Cobra.
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package commands
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import (
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"fmt"
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"regexp"
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"github.com/gohugoio/hugo/config"
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"github.com/spf13/cobra"
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)
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const (
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ansiEsc = "\u001B"
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clearLine = "\r\033[K"
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hideCursor = ansiEsc + "[?25l"
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showCursor = ansiEsc + "[?25h"
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)
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type flagsToConfigHandler interface {
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flagsToConfig(cfg config.Provider)
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}
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type cmder interface {
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flagsToConfigHandler
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getCommand() *cobra.Command
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}
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// commandError is an error used to signal different error situations in command handling.
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type commandError struct {
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s string
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userError bool
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}
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func (c commandError) Error() string {
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return c.s
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}
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func (c commandError) isUserError() bool {
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return c.userError
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}
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func newUserError(a ...interface{}) commandError {
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return commandError{s: fmt.Sprintln(a...), userError: true}
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}
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func newSystemError(a ...interface{}) commandError {
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return commandError{s: fmt.Sprintln(a...), userError: false}
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}
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func newSystemErrorF(format string, a ...interface{}) commandError {
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return commandError{s: fmt.Sprintf(format, a...), userError: false}
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}
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// Catch some of the obvious user errors from Cobra.
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// We don't want to show the usage message for every error.
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// The below may be to generic. Time will show.
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var userErrorRegexp = regexp.MustCompile("argument|flag|shorthand")
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func isUserError(err error) bool {
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if cErr, ok := err.(commandError); ok && cErr.isUserError() {
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return true
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}
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return userErrorRegexp.MatchString(err.Error())
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}
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