AdGuardHome/internal/agherr/agherr.go

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Pull request:* all: remove github.com/joomcode/errorx dependency Merge in DNS/adguard-home from 2240-removing-errorx-dependency to master Squashed commit of the following: commit 5bbe0567356f06e3b9ee5b3dc38d357b472cacb1 Merge: a6040850d 02d16a0b4 Author: Eugene Burkov <e.burkov@adguard.com> Date: Thu Nov 5 14:32:22 2020 +0300 Merge branch 'master' into 2240-removing-errorx-dependency commit a6040850da3cefb131208097477b0956e80063fb Author: Eugene Burkov <e.burkov@adguard.com> Date: Thu Nov 5 14:23:36 2020 +0300 * dhcpd: convert some abbreviations to lowercase. commit d05bd51b994906b0ff52c5a8e779bd1f512f4bb7 Author: Eugene Burkov <e.burkov@adguard.com> Date: Thu Nov 5 12:47:20 2020 +0300 * agherr: last final fixes commit 164bca55035ff44e50b0abb33e129a0d24ffe87c Author: Ainar Garipov <A.Garipov@AdGuard.COM> Date: Tue Nov 3 19:11:10 2020 +0300 * all: final fixes again commit a0ac26f409c0b28a176cf2861d52c2f471b59484 Author: Ainar Garipov <A.Garipov@AdGuard.COM> Date: Tue Nov 3 18:51:39 2020 +0300 * all: final fixes commit 6147b02d402b513323b07e85856b348884f3a088 Merge: 9fd3af1a3 62cc334f4 Author: Eugene Burkov <e.burkov@adguard.com> Date: Tue Nov 3 18:26:03 2020 +0300 Merge branch 'master' into 2240-removing-errorx-dependency commit 9fd3af1a39a3189b5c41315a8ad1568ae5cb4fc9 Author: Eugene Burkov <e.burkov@adguard.com> Date: Tue Nov 3 18:23:08 2020 +0300 * all: remove useless helper commit 7cd9aeae639762b28b25f354d69c5cf74f670211 Author: Eugene Burkov <e.burkov@adguard.com> Date: Tue Nov 3 17:19:26 2020 +0300 * agherr: improved code tidiness commit a74a49236e9aaace070646dac710de9201105262 Merge: dc9dedbf2 df34ee5c0 Author: Eugene Burkov <e.burkov@adguard.com> Date: Tue Nov 3 16:54:29 2020 +0300 Merge branch 'master' into 2240-removing-errorx-dependency commit dc9dedbf205756e3adaa3bc776d349bf3d8c69a5 Author: Eugene Burkov <e.burkov@adguard.com> Date: Tue Nov 3 16:40:08 2020 +0300 * agherr: improve and cover by tests commit fd6bfe9e282156cc60e006cb7cd46cce4d3a07a8 Author: Eugene Burkov <e.burkov@adguard.com> Date: Tue Nov 3 14:06:27 2020 +0300 * all: improve code quality commit ea00c2f8c5060e9611f9a80cfd0e4a039526d0c4 Author: Eugene Burkov <e.burkov@adguard.com> Date: Tue Nov 3 13:03:57 2020 +0300 * all: fix linter style warnings commit 8e75e1a681a7218c2b4c69adfa2b7e1e2966f9ac Author: Eugene Burkov <e.burkov@adguard.com> Date: Tue Nov 3 12:29:26 2020 +0300 * all: remove github.com/joomcode/errorx dependency Closes #2240.
2020-11-05 12:20:57 +00:00
// Package agherr contains the extended error type, and the function for
// wrapping several errors.
package agherr
import (
"fmt"
"strings"
)
// Error is the constant error type.
type Error string
// Error implements the error interface for Error.
func (err Error) Error() (msg string) {
return string(err)
}
Pull request:* all: remove github.com/joomcode/errorx dependency Merge in DNS/adguard-home from 2240-removing-errorx-dependency to master Squashed commit of the following: commit 5bbe0567356f06e3b9ee5b3dc38d357b472cacb1 Merge: a6040850d 02d16a0b4 Author: Eugene Burkov <e.burkov@adguard.com> Date: Thu Nov 5 14:32:22 2020 +0300 Merge branch 'master' into 2240-removing-errorx-dependency commit a6040850da3cefb131208097477b0956e80063fb Author: Eugene Burkov <e.burkov@adguard.com> Date: Thu Nov 5 14:23:36 2020 +0300 * dhcpd: convert some abbreviations to lowercase. commit d05bd51b994906b0ff52c5a8e779bd1f512f4bb7 Author: Eugene Burkov <e.burkov@adguard.com> Date: Thu Nov 5 12:47:20 2020 +0300 * agherr: last final fixes commit 164bca55035ff44e50b0abb33e129a0d24ffe87c Author: Ainar Garipov <A.Garipov@AdGuard.COM> Date: Tue Nov 3 19:11:10 2020 +0300 * all: final fixes again commit a0ac26f409c0b28a176cf2861d52c2f471b59484 Author: Ainar Garipov <A.Garipov@AdGuard.COM> Date: Tue Nov 3 18:51:39 2020 +0300 * all: final fixes commit 6147b02d402b513323b07e85856b348884f3a088 Merge: 9fd3af1a3 62cc334f4 Author: Eugene Burkov <e.burkov@adguard.com> Date: Tue Nov 3 18:26:03 2020 +0300 Merge branch 'master' into 2240-removing-errorx-dependency commit 9fd3af1a39a3189b5c41315a8ad1568ae5cb4fc9 Author: Eugene Burkov <e.burkov@adguard.com> Date: Tue Nov 3 18:23:08 2020 +0300 * all: remove useless helper commit 7cd9aeae639762b28b25f354d69c5cf74f670211 Author: Eugene Burkov <e.burkov@adguard.com> Date: Tue Nov 3 17:19:26 2020 +0300 * agherr: improved code tidiness commit a74a49236e9aaace070646dac710de9201105262 Merge: dc9dedbf2 df34ee5c0 Author: Eugene Burkov <e.burkov@adguard.com> Date: Tue Nov 3 16:54:29 2020 +0300 Merge branch 'master' into 2240-removing-errorx-dependency commit dc9dedbf205756e3adaa3bc776d349bf3d8c69a5 Author: Eugene Burkov <e.burkov@adguard.com> Date: Tue Nov 3 16:40:08 2020 +0300 * agherr: improve and cover by tests commit fd6bfe9e282156cc60e006cb7cd46cce4d3a07a8 Author: Eugene Burkov <e.burkov@adguard.com> Date: Tue Nov 3 14:06:27 2020 +0300 * all: improve code quality commit ea00c2f8c5060e9611f9a80cfd0e4a039526d0c4 Author: Eugene Burkov <e.burkov@adguard.com> Date: Tue Nov 3 13:03:57 2020 +0300 * all: fix linter style warnings commit 8e75e1a681a7218c2b4c69adfa2b7e1e2966f9ac Author: Eugene Burkov <e.burkov@adguard.com> Date: Tue Nov 3 12:29:26 2020 +0300 * all: remove github.com/joomcode/errorx dependency Closes #2240.
2020-11-05 12:20:57 +00:00
// manyError is an error containing several wrapped errors. It is created to be
// a simpler version of the API provided by github.com/joomcode/errorx.
type manyError struct {
message string
underlying []error
}
// Many wraps several errors and returns a single error.
func Many(message string, underlying ...error) error {
err := &manyError{
message: message,
underlying: underlying,
}
return err
}
// Error implements the error interface for *manyError.
func (e *manyError) Error() string {
switch len(e.underlying) {
case 0:
return e.message
case 1:
return fmt.Sprintf("%s: %s", e.message, e.underlying[0])
default:
b := &strings.Builder{}
// Ignore errors, since strings.(*Buffer).Write never returns
// errors.
_, _ = fmt.Fprintf(b, "%s: %s (hidden: %s", e.message, e.underlying[0], e.underlying[1])
for _, u := range e.underlying[2:] {
// See comment above.
_, _ = fmt.Fprintf(b, ", %s", u)
}
// See comment above.
_, _ = b.WriteString(")")
return b.String()
}
}
// Unwrap implements the hidden errors.wrapper interface for *manyError.
func (e *manyError) Unwrap() error {
if len(e.underlying) == 0 {
return nil
}
return e.underlying[0]
}
// wrapper is a copy of the hidden errors.wrapper interface for tests, linting,
// etc.
type wrapper interface {
Unwrap() error
}