mirror of https://github.com/gohugoio/hugo.git
67 lines
2.0 KiB
Go
67 lines
2.0 KiB
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 herrors contains common Hugo errors and error related utilities.
|
|
package herrors
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"io"
|
|
"os"
|
|
"runtime/debug"
|
|
|
|
_errors "github.com/pkg/errors"
|
|
)
|
|
|
|
// As defined in https://godoc.org/github.com/pkg/errors
|
|
type causer interface {
|
|
Cause() error
|
|
}
|
|
|
|
type stackTracer interface {
|
|
StackTrace() _errors.StackTrace
|
|
}
|
|
|
|
// PrintStackTrace prints the error's stack trace to stdoud.
|
|
func PrintStackTrace(err error) {
|
|
FprintStackTrace(os.Stdout, err)
|
|
}
|
|
|
|
// FprintStackTrace prints the error's stack trace to w.
|
|
func FprintStackTrace(w io.Writer, err error) {
|
|
if err, ok := err.(stackTracer); ok {
|
|
for _, f := range err.StackTrace() {
|
|
fmt.Fprintf(w, "%+s:%d\n", f, f)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Recover is a helper function that can be used to capture panics.
|
|
// Put this at the top of a method/function that crashes in a template:
|
|
// defer herrors.Recover()
|
|
func Recover(args ...interface{}) {
|
|
if r := recover(); r != nil {
|
|
fmt.Println("ERR:", r)
|
|
args = append(args, "stacktrace from panic: \n"+string(debug.Stack()), "\n")
|
|
fmt.Println(args...)
|
|
}
|
|
|
|
}
|
|
|
|
// ErrFeatureNotAvailable denotes that a feature is unavailable.
|
|
//
|
|
// We will, at least to begin with, make some Hugo features (SCSS with libsass) optional,
|
|
// and this error is used to signal those situations.
|
|
var ErrFeatureNotAvailable = errors.New("this feature is not available in your current Hugo version, see https://goo.gl/YMrWcn for more information")
|