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https://github.com/gohugoio/hugo.git
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7ff0a8ee9f
This is preparation for #6041. For historic reasons, the code for bulding the section tree and the taxonomies were very much separate. This works, but makes it hard to extend, maintain, and possibly not so fast as it could be. This simplification also introduces 3 slightly breaking changes, which I suspect most people will be pleased about. See referenced issues: This commit also switches the radix tree dependency to a mutable implementation: github.com/armon/go-radix. Fixes #6154 Fixes #6153 Fixes #6152
66 lines
2 KiB
Go
66 lines
2 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 herrors contains common Hugo errors and error related utilities.
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package herrors
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import (
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"errors"
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"fmt"
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"io"
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"os"
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"runtime/debug"
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_errors "github.com/pkg/errors"
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)
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// As defined in https://godoc.org/github.com/pkg/errors
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type causer interface {
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Cause() error
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}
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type stackTracer interface {
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StackTrace() _errors.StackTrace
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}
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// PrintStackTrace prints the error's stack trace to stdoud.
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func PrintStackTrace(err error) {
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FprintStackTrace(os.Stdout, err)
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}
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// FprintStackTrace prints the error's stack trace to w.
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func FprintStackTrace(w io.Writer, err error) {
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if err, ok := err.(stackTracer); ok {
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for _, f := range err.StackTrace() {
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fmt.Fprintf(w, "%+s:%d\n", f, f)
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}
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}
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}
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// Recover is a helper function that can be used to capture panics.
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// Put this at the top of a method/function that crashes in a template:
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// defer herrors.Recover()
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func Recover(args ...interface{}) {
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if r := recover(); r != nil {
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args = append(args, "stacktrace from panic: \n"+string(debug.Stack()), "\n")
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fmt.Println(args...)
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}
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}
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// ErrFeatureNotAvailable denotes that a feature is unavailable.
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//
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// We will, at least to begin with, make some Hugo features (SCSS with libsass) optional,
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// and this error is used to signal those situations.
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var ErrFeatureNotAvailable = errors.New("this feature is not available in your current Hugo version, see https://goo.gl/YMrWcn for more information")
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