new finder library based on afero

.github/workflows/ci.yaml

@@ -45,6 +45,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
         go: ['1.19', '1.20', '1.21']
+        tags: ['', 'finder']
 
     steps:
       - name: Checkout repository
@@ -56,11 +57,11 @@ jobs:
           go-version: ${{ matrix.go }}
 
       - name: Test
-        run: go test -race -v ./...
+        run: go test -race -v -tags '${{ matrix.tags }}' ./...
         if: runner.os != 'Windows'
 
       - name: Test (without race detector)
-        run: go test -v ./...
+        run: go test -v -tags '${{ matrix.tags }}' ./...
         if: runner.os == 'Windows'
 
   lint:

go.mod

@@ -9,6 +9,7 @@ require (
 	github.com/mitchellh/mapstructure v1.5.0
 	github.com/pelletier/go-toml/v2 v2.1.0
 	github.com/sagikazarmark/crypt v0.14.0
+	github.com/sagikazarmark/locafero v0.3.0
 	github.com/sagikazarmark/slog-shim v0.1.0
 	github.com/spf13/afero v1.9.5
 	github.com/spf13/cast v1.5.1
@@ -58,13 +59,14 @@ require (
 	github.com/nats-io/nuid v1.0.1 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
+	github.com/sourcegraph/conc v0.3.0 // indirect
 	go.etcd.io/etcd/api/v3 v3.5.9 // indirect
 	go.etcd.io/etcd/client/pkg/v3 v3.5.9 // indirect
 	go.etcd.io/etcd/client/v2 v2.305.9 // indirect
 	go.etcd.io/etcd/client/v3 v3.5.9 // indirect
 	go.opencensus.io v0.24.0 // indirect
 	go.uber.org/atomic v1.9.0 // indirect
-	go.uber.org/multierr v1.8.0 // indirect
+	go.uber.org/multierr v1.9.0 // indirect
 	go.uber.org/zap v1.21.0 // indirect
 	golang.org/x/crypto v0.13.0 // indirect
 	golang.org/x/exp v0.0.0-20230905200255-921286631fa9 // indirect

go.sum

@@ -330,12 +330,16 @@ github.com/rogpeppe/go-internal v1.9.0 h1:73kH8U+JUqXU8lRuOHeVHaa/SZPifC7BkcraZV
 github.com/ryanuber/columnize v0.0.0-20160712163229-9b3edd62028f/go.mod h1:sm1tb6uqfes/u+d4ooFouqFdy9/2g9QGwK3SQygK0Ts=
 github.com/sagikazarmark/crypt v0.14.0 h1:+QD5vjd6aZd6moHuIRVL+uJO7fkhiRjMz3ldbZQY5go=
 github.com/sagikazarmark/crypt v0.14.0/go.mod h1:JuxBJUNXrVOAywrtQNTZpOeTgcL1Az5qM7jKVDOifig=
+github.com/sagikazarmark/locafero v0.3.0 h1:zT7VEGWC2DTflmccN/5T1etyKvxSxpHsjb9cJvm4SvQ=
+github.com/sagikazarmark/locafero v0.3.0/go.mod h1:w+v7UsPNFwzF1cHuOajOOzoq4U7v/ig1mpRjqV+Bu1U=
 github.com/sagikazarmark/slog-shim v0.1.0 h1:diDBnUNK9N/354PgrxMywXnAwEr1QZcOr6gto+ugjYE=
 github.com/sagikazarmark/slog-shim v0.1.0/go.mod h1:SrcSrq8aKtyuqEI1uvTDTK1arOWRIczQRv+GVI1AkeQ=
 github.com/sean-/seed v0.0.0-20170313163322-e2103e2c3529 h1:nn5Wsu0esKSJiIVhscUtVbo7ada43DJhG55ua/hjS5I=
 github.com/sean-/seed v0.0.0-20170313163322-e2103e2c3529/go.mod h1:DxrIzT+xaE7yg65j358z/aeFdxmN0P9QXhEzd20vsDc=
 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
 github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
+github.com/sourcegraph/conc v0.3.0 h1:OQTbbt6P72L20UqAkXXuLOj79LfEanQ+YQFNpLA9ySo=
+github.com/sourcegraph/conc v0.3.0/go.mod h1:Sdozi7LEKbFPqYX2/J+iBAM6HpqSLTASQIKqDmF7Mt0=
 github.com/spf13/afero v1.9.5 h1:stMpOSZFs//0Lv29HduCmli3GUfpFoF3Y1Q/aXj/wVM=
 github.com/spf13/afero v1.9.5/go.mod h1:UBogFpq8E9Hx+xc5CNTTEpTnuHVmXDwZcZcE1eb/UhQ=
 github.com/spf13/cast v1.5.1 h1:R+kOtfhWQE6TVQzY+4D7wJLBgkdVasCEFxSUBYBYIlA=
@@ -390,8 +394,8 @@ go.uber.org/atomic v1.9.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
 go.uber.org/goleak v1.1.11 h1:wy28qYRKZgnJTxGxvye5/wgWr1EKjmUDGYox5mGlRlI=
 go.uber.org/goleak v1.1.11/go.mod h1:cwTWslyiVhfpKIDGSZEM2HlOvcqm+tG4zioyIeLoqMQ=
 go.uber.org/multierr v1.6.0/go.mod h1:cdWPpRnG4AhwMwsgIHip0KRBQjJy5kYEpYjJxpXp9iU=
-go.uber.org/multierr v1.8.0 h1:dg6GjLku4EH+249NNmoIciG9N/jURbDG+pFlTkhzIC8=
-go.uber.org/multierr v1.8.0/go.mod h1:7EAYxJLBy9rStEaz58O2t4Uvip6FSURkq8/ppBp95ak=
+go.uber.org/multierr v1.9.0 h1:7fIwc/ZtS0q++VgcfqFDxSBZVv/Xo49/SYnDFupUwlI=
+go.uber.org/multierr v1.9.0/go.mod h1:X2jQV1h+kxSjClGpnseKVIxpmcjrj7MNnI0bnlfKTVQ=
 go.uber.org/zap v1.21.0 h1:WefMeulhovoZ2sYXz7st6K0sLj7bBhpiFaud4r4zST8=
 go.uber.org/zap v1.21.0/go.mod h1:wjWOCqI0f2ZZrJF/UufIOkiC8ii6tm1iqIsLo76RfJw=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=

viper_go1_15.go

@@ -1,5 +1,5 @@
-//go:build !go1.16 || !finder
-// +build !go1.16 !finder
+//go:build !finder
+// +build !finder
 
 package viper
 

viper_go1_16.go

@@ -1,32 +1,39 @@
-//go:build go1.16 && finder
-// +build go1.16,finder
+//go:build finder
+// +build finder
 
 package viper
 
 import (
 	"fmt"
 
-	"github.com/spf13/afero"
+	"github.com/sagikazarmark/locafero"
 )
 
 // Search all configPaths for any config file.
 // Returns the first path that exists (and is a config file).
 func (v *Viper) findConfigFile() (string, error) {
-	finder := finder{
-		paths:            v.configPaths,
-		fileNames:        []string{v.configName},
-		extensions:       SupportedExts,
-		withoutExtension: v.configType != "",
+	var names []string
+
+	if v.configType != "" {
+		names = locafero.NameWithOptionalExtensions(v.configName, SupportedExts...)
+	} else {
+		names = locafero.NameWithExtensions(v.configName, SupportedExts...)
+	}
+
+	finder := locafero.Finder{
+		Paths: v.configPaths,
+		Names: names,
+		Type:  locafero.FileTypeFile,
 	}
 
-	file, err := finder.Find(afero.NewIOFS(v.fs))
+	results, err := finder.Find(v.fs)
 	if err != nil {
 		return "", err
 	}
 
-	if file == "" {
+	if len(results) == 0 {
 		return "", ConfigFileNotFoundError{v.configName, fmt.Sprintf("%s", v.configPaths)}
 	}
 
-	return file, nil
+	return results[0], nil
 }