chore: remove dependency on juju/errors (#11)

The package was created before Go introduced their own "errors"
package.

Trade the better juju errors semantic for a smaller dependency tree.

Reviewed-on: #11
Co-authored-by: zimbatm <zimbatm@zimbatm.com>
Co-committed-by: zimbatm <zimbatm@zimbatm.com>

go.mod

@@ -12,7 +12,6 @@ require (
 	github.com/otiai10/copy v1.14.0
 	github.com/stretchr/testify v1.8.4
 	github.com/vmihailenco/msgpack/v5 v5.4.1
-	github.com/ztrue/shutdown v0.1.1
 	go.etcd.io/bbolt v1.3.8
 	golang.org/x/sync v0.5.0
 )

go.sum

@@ -57,8 +57,6 @@ github.com/vmihailenco/msgpack/v5 v5.4.1 h1:cQriyiUvjTwOHg8QZaPihLWeRAAVoCpE00IU
 github.com/vmihailenco/msgpack/v5 v5.4.1/go.mod h1:GaZTsDaehaPpQVyxrf5mtQlH+pc21PIudVV/E3rRQok=
 github.com/vmihailenco/tagparser/v2 v2.0.0 h1:y09buUbR+b5aycVFQs/g70pqKVZNBmxwAhO7/IwNM9g=
 github.com/vmihailenco/tagparser/v2 v2.0.0/go.mod h1:Wri+At7QHww0WTrCBeu4J6bNtoV6mEfg5OIWRZA9qds=
-github.com/ztrue/shutdown v0.1.1 h1:GKR2ye2OSQlq1GNVE/s2NbrIMsFdmL+NdR6z6t1k+Tg=
-github.com/ztrue/shutdown v0.1.1/go.mod h1:hcMWcM2SwIsQk7Wb49aYme4tX66x6iLzs07w1OYAQLw=
 go.etcd.io/bbolt v1.3.8 h1:xs88BrvEv273UsB79e0hcVrlUWmS0a8upikMFhSyAtA=
 go.etcd.io/bbolt v1.3.8/go.mod h1:N9Mkw9X8x5fupy0IKsmuqVtoGDyxsaDlbk4Rd05IAQw=
 golang.org/x/exp v0.0.0-20231006140011-7918f672742d h1:jtJma62tbqLibJ5sFQz8bKtEM8rJBtfilJ2qTU199MI=

internal/cache/cache.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"crypto/sha1"
 	"encoding/base32"
+	"errors"
 	"fmt"
 	"io/fs"
 	"os"
@@ -11,7 +12,6 @@ import (
 	"time"
 
 	"github.com/adrg/xdg"
-	"github.com/juju/errors"
 	"github.com/vmihailenco/msgpack/v5"
 	bolt "go.etcd.io/bbolt"
 )
@@ -41,6 +41,9 @@ func Open(treeRoot string, clean bool) (err error) {
 
 	name := base32.StdEncoding.EncodeToString(digest)
 	path, err := xdg.CacheFile(fmt.Sprintf("treefmt/eval-cache/%v.db", name))
+	if err != nil {
+		return fmt.Errorf("%w: could not resolve local path for the cache", err)
+	}
 
 	// force a clean of the cache if specified
 	if clean {
@@ -48,17 +51,13 @@ func Open(treeRoot string, clean bool) (err error) {
 		if errors.Is(err, os.ErrNotExist) {
 			err = nil
 		} else if err != nil {
-			return errors.Annotate(err, "failed to clear cache")
+			return fmt.Errorf("%w: failed to clear cache", err)
 		}
 	}
 
-	if err != nil {
-		return errors.Annotate(err, "could not resolve local path for the cache")
-	}
-
 	db, err = bolt.Open(path, 0o600, nil)
 	if err != nil {
-		return errors.Annotate(err, "failed to open cache")
+		return fmt.Errorf("%w: failed to open cache", err)
 	}
 
 	err = db.Update(func(tx *bolt.Tx) error {
@@ -86,7 +85,7 @@ func getEntry(bucket *bolt.Bucket, path string) (*Entry, error) {
 	if b != nil {
 		var cached Entry
 		if err := msgpack.Unmarshal(b, &cached); err != nil {
-			return nil, errors.Annotatef(err, "failed to unmarshal cache info for path '%v'", path)
+			return nil, fmt.Errorf("%w: failed to unmarshal cache info for path '%v'", err, path)
 		}
 		return &cached, nil
 	} else {
@@ -102,7 +101,7 @@ func ChangeSet(ctx context.Context, root string, pathsCh chan<- string) error {
 
 		return filepath.Walk(root, func(path string, info fs.FileInfo, err error) error {
 			if err != nil {
-				return errors.Annotate(err, "failed to walk path")
+				return fmt.Errorf("%w: failed to walk path", err)
 			} else if ctx.Err() != nil {
 				return ctx.Err()
 			} else if info.IsDir() {
@@ -174,11 +173,11 @@ func Update(paths []string) (int, error) {
 
 			bytes, err := msgpack.Marshal(cacheInfo)
 			if err != nil {
-				return errors.Annotate(err, "failed to marshal mod time")
+				return fmt.Errorf("%w: failed to marshal mod time", err)
 			}
 
 			if err = bucket.Put([]byte(path), bytes); err != nil {
-				return errors.Annotate(err, "failed to put mode time")
+				return fmt.Errorf("%w: failed to put mode time", err)
 			}
 		}
 

internal/cli/format.go

@@ -12,7 +12,6 @@ import (
 	"git.numtide.com/numtide/treefmt/internal/format"
 
 	"github.com/charmbracelet/log"
-	"github.com/juju/errors"
 	"golang.org/x/sync/errgroup"
 )
 
@@ -38,7 +37,7 @@ func (f *Format) Run() error {
 	// read config
 	cfg, err := format.ReadConfigFile(Cli.ConfigFile)
 	if err != nil {
-		return errors.Annotate(err, "failed to read config file")
+		return fmt.Errorf("%w: failed to read config file", err)
 	}
 
 	// create optional formatter filter set
@@ -46,7 +45,7 @@ func (f *Format) Run() error {
 	for _, name := range Cli.Formatters {
 		_, ok := cfg.Formatters[name]
 		if !ok {
-			return errors.Errorf("formatter not found in config: %v", name)
+			return fmt.Errorf("%w: formatter not found in config: %v", err, name)
 		}
 		formatterSet[name] = true
 	}
@@ -75,7 +74,7 @@ func (f *Format) Run() error {
 			// remove this formatter
 			delete(cfg.Formatters, name)
 		} else if err != nil {
-			return errors.Annotatef(err, "failed to initialise formatter: %v", name)
+			return fmt.Errorf("%w: failed to initialise formatter: %v", err, name)
 		}
 	}
 

internal/cli/format_test.go

@@ -1,6 +1,7 @@
 package cli
 
 import (
+	"fmt"
 	"io"
 	"os"
 	"path/filepath"
@@ -9,7 +10,6 @@ import (
 	"git.numtide.com/numtide/treefmt/internal/format"
 	"github.com/BurntSushi/toml"
 	"github.com/alecthomas/kong"
-	"github.com/juju/errors"
 	cp "github.com/otiai10/copy"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -78,12 +78,12 @@ func cmd(t *testing.T, args ...string) ([]byte, error) {
 
 	// reset and read the temporary output
 	if _, err = tempOut.Seek(0, 0); err != nil {
-		return nil, errors.Annotate(err, "failed to reset temp output for reading")
+		return nil, fmt.Errorf("%w: failed to reset temp output for reading", err)
 	}
 
 	out, err := io.ReadAll(tempOut)
 	if err != nil {
-		return nil, errors.Annotate(err, "failed to read temp output")
+		return nil, fmt.Errorf("%w: failed to read temp output", err)
 	}
 
 	// swap outputs back

internal/format/format.go

@@ -2,18 +2,17 @@ package format
 
 import (
 	"context"
+	"errors"
+	"fmt"
 	"os/exec"
 	"time"
 
 	"github.com/charmbracelet/log"
 	"github.com/gobwas/glob"
-	"github.com/juju/errors"
 )
 
-const (
+// ErrFormatterNotFound is returned when the Command for a Formatter is not available.
-	// ErrFormatterNotFound is returned when the Command for a Formatter is not available.
+var ErrFormatterNotFound = errors.New("formatter not found")
-	ErrFormatterNotFound = errors.ConstError("formatter not found")
-)
 
 // Formatter represents a command which should be applied to a filesystem.
 type Formatter struct {
@@ -63,7 +62,7 @@ func (f *Formatter) Init(name string) error {
 		for _, pattern := range f.Includes {
 			g, err := glob.Compile("**/" + pattern)
 			if err != nil {
-				return errors.Annotatef(err, "failed to compile include pattern '%v' for formatter '%v'", pattern, f.name)
+				return fmt.Errorf("%w: failed to compile include pattern '%v' for formatter '%v'", err, pattern, f.name)
 			}
 			f.includes = append(f.includes, g)
 		}
@@ -73,7 +72,7 @@ func (f *Formatter) Init(name string) error {
 		for _, pattern := range f.Excludes {
 			g, err := glob.Compile("**/" + pattern)
 			if err != nil {
-				return errors.Annotatef(err, "failed to compile exclude pattern '%v' for formatter '%v'", pattern, f.name)
+				return fmt.Errorf("%w: failed to compile exclude pattern '%v' for formatter '%v'", err, pattern, f.name)
 			}
 			f.excludes = append(f.excludes, g)
 		}