refactor: move from io/ioutil to io and os package (#17109)

The io/ioutil package has been deprecated as of Go 1.16, see
https://golang.org/doc/go1.16#ioutil. This commit replaces the existing
io/ioutil functions with their new definitions in io and os packages.

Signed-off-by: Eng Zer Jun <[email protected]>

Co-authored-by: techknowlogick <[email protected]>

Author: Juneezee

build/generate-bindata.go

@@ -11,7 +11,6 @@ import (
 	"bytes"
 	"crypto/sha1"
 	"fmt"
-	"io/ioutil"
 	"log"
 	"net/http"
 	"os"
@@ -28,7 +27,7 @@ func needsUpdate(dir string, filename string) (bool, []byte) {
 		needRegen = true
 	}
 
-	oldHash, err := ioutil.ReadFile(filename + ".hash")
+	oldHash, err := os.ReadFile(filename + ".hash")
 	if err != nil {
 		oldHash = []byte{}
 	}
@@ -83,5 +82,5 @@ func main() {
 	if err != nil {
 		log.Fatalf("%v\n", err)
 	}
-	_ = ioutil.WriteFile(filename+".hash", newHash, 0666)
+	_ = os.WriteFile(filename+".hash", newHash, 0666)
 }

build/generate-emoji.go

@@ -12,9 +12,10 @@ import (
 	"flag"
 	"fmt"
 	"go/format"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
+	"os"
 	"regexp"
 	"sort"
 	"strconv"
@@ -67,7 +68,7 @@ func main() {
 	}
 
 	// write
-	err = ioutil.WriteFile(*flagOut, buf, 0644)
+	err = os.WriteFile(*flagOut, buf, 0644)
 	if err != nil {
 		log.Fatal(err)
 	}
@@ -96,7 +97,7 @@ func generate() ([]byte, error) {
 	defer res.Body.Close()
 
 	// read all
-	body, err := ioutil.ReadAll(res.Body)
+	body, err := io.ReadAll(res.Body)
 	if err != nil {
 		return nil, err
 	}
@@ -157,7 +158,7 @@ func generate() ([]byte, error) {
 
 	// write a JSON file to use with tribute (write before adding skin tones since we can't support them there yet)
 	file, _ := json.Marshal(data)
-	_ = ioutil.WriteFile("assets/emoji.json", file, 0644)
+	_ = os.WriteFile("assets/emoji.json", file, 0644)
 
 	// Add skin tones to emoji that support it
 	var (

build/generate-gitignores.go

@@ -9,7 +9,6 @@ import (
 	"flag"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"log"
 	"net/http"
 	"os"
@@ -34,7 +33,7 @@ func main() {
 	flag.StringVar(&githubApiToken, "token", "", "github api token")
 	flag.Parse()
 
-	file, err := ioutil.TempFile(os.TempDir(), prefix)
+	file, err := os.CreateTemp(os.TempDir(), prefix)
 
 	if err != nil {
 		log.Fatalf("Failed to create temp file. %s", err)
@@ -114,13 +113,13 @@ func main() {
 	for dst, src := range filesToCopy {
 		// Read all content of src to data
 		src = path.Join(destination, src)
-		data, err := ioutil.ReadFile(src)
+		data, err := os.ReadFile(src)
 		if err != nil {
 			log.Fatalf("Failed to read src file. %s", err)
 		}
 		// Write data to dst
 		dst = path.Join(destination, dst)
-		err = ioutil.WriteFile(dst, data, 0644)
+		err = os.WriteFile(dst, data, 0644)
 		if err != nil {
 			log.Fatalf("Failed to write new file. %s", err)
 		}

build/generate-licenses.go

@@ -9,7 +9,6 @@ import (
 	"flag"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"log"
 	"net/http"
 	"os"
@@ -34,7 +33,7 @@ func main() {
 	flag.StringVar(&githubApiToken, "token", "", "github api token")
 	flag.Parse()
 
-	file, err := ioutil.TempFile(os.TempDir(), prefix)
+	file, err := os.CreateTemp(os.TempDir(), prefix)
 
 	if err != nil {
 		log.Fatalf("Failed to create temp file. %s", err)

cmd/dump.go

@@ -7,7 +7,6 @@ package cmd
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path"
 	"path/filepath"
@@ -247,7 +246,7 @@ func runDump(ctx *cli.Context) error {
 		fatal("Path does not exist: %s", tmpDir)
 	}
 
-	dbDump, err := ioutil.TempFile(tmpDir, "gitea-db.sql")
+	dbDump, err := os.CreateTemp(tmpDir, "gitea-db.sql")
 	if err != nil {
 		fatal("Failed to create tmp file: %v", err)
 	}

contrib/fixtures/fixture_generation.go

@@ -6,7 +6,6 @@ package main
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -65,7 +64,7 @@ func generate(name string) error {
 				return err
 			}
 			path := filepath.Join(fixturesDir, name+".yml")
-			if err := ioutil.WriteFile(path, []byte(data), 0644); err != nil {
+			if err := os.WriteFile(path, []byte(data), 0644); err != nil {
 				return fmt.Errorf("%s: %+v", path, err)
 			}
 			fmt.Printf("%s created.\n", path)

contrib/pr/checkout.go

@@ -12,7 +12,6 @@ import (
 	"context"
 	"flag"
 	"fmt"
-	"io/ioutil"
 	"log"
 	"net/http"
 	"net/url"
@@ -52,11 +51,11 @@ func runPR() {
 	setting.SetCustomPathAndConf("", "", "")
 	setting.NewContext()
 
-	setting.RepoRootPath, err = ioutil.TempDir(os.TempDir(), "repos")
+	setting.RepoRootPath, err = os.MkdirTemp(os.TempDir(), "repos")
 	if err != nil {
 		log.Fatalf("TempDir: %v\n", err)
 	}
-	setting.AppDataPath, err = ioutil.TempDir(os.TempDir(), "appdata")
+	setting.AppDataPath, err = os.MkdirTemp(os.TempDir(), "appdata")
 	if err != nil {
 		log.Fatalf("TempDir: %v\n", err)
 	}
@@ -181,7 +180,7 @@ func main() {
 	codeFilePath = filepath.FromSlash(codeFilePath) //Convert to running OS
 
 	//Copy this file if it will not exist in the PR branch
-	dat, err := ioutil.ReadFile(codeFilePath)
+	dat, err := os.ReadFile(codeFilePath)
 	if err != nil {
 		log.Fatalf("Failed to cache this code file : %v", err)
 	}
@@ -245,7 +244,7 @@ func main() {
 		if err != nil {
 			log.Fatalf("Failed to duplicate this code file in PR : %v", err)
 		}
-		err = ioutil.WriteFile(codeFilePath, dat, 0644)
+		err = os.WriteFile(codeFilePath, dat, 0644)
 		if err != nil {
 			log.Fatalf("Failed to duplicate this code file in PR : %v", err)
 		}

integrations/api_helper_for_declarative_test.go

@@ -7,9 +7,9 @@ package integrations
 import (
 	"context"
 	"fmt"
-	"io/ioutil"
 	"net/http"
 	"net/url"
+	"os"
 	"testing"
 	"time"
 
@@ -163,7 +163,7 @@ func doAPICreateUserKey(ctx APITestContext, keyname, keyFile string, callback ..
 	return func(t *testing.T) {
 		urlStr := fmt.Sprintf("/api/v1/user/keys?token=%s", ctx.Token)
 
-		dataPubKey, err := ioutil.ReadFile(keyFile + ".pub")
+		dataPubKey, err := os.ReadFile(keyFile + ".pub")
 		assert.NoError(t, err)
 		req := NewRequestWithJSON(t, "POST", urlStr, &api.CreateKeyOption{
 			Title: keyname,
@@ -199,7 +199,7 @@ func doAPICreateDeployKey(ctx APITestContext, keyname, keyFile string, readOnly
 	return func(t *testing.T) {
 		urlStr := fmt.Sprintf("/api/v1/repos/%s/%s/keys?token=%s", ctx.Username, ctx.Reponame, ctx.Token)
 
-		dataPubKey, err := ioutil.ReadFile(keyFile + ".pub")
+		dataPubKey, err := os.ReadFile(keyFile + ".pub")
 		assert.NoError(t, err)
 		req := NewRequestWithJSON(t, "POST", urlStr, api.CreateKeyOption{
 			Title:    keyname,

integrations/api_repo_test.go

@@ -6,9 +6,9 @@ package integrations
 
 import (
 	"fmt"
-	"io/ioutil"
 	"net/http"
 	"net/url"
+	"os"
 	"testing"
 
 	"code.gitea.io/gitea/models"
@@ -356,7 +356,7 @@ func testAPIRepoMigrateConflict(t *testing.T, u *url.URL) {
 		httpContext := baseAPITestContext
 
 		httpContext.Reponame = "repo-tmp-17"
-		dstPath, err := ioutil.TempDir("", httpContext.Reponame)
+		dstPath, err := os.MkdirTemp("", httpContext.Reponame)
 		assert.NoError(t, err)
 		defer util.RemoveAll(dstPath)
 		t.Run("CreateRepo", doAPICreateRepository(httpContext, false))
@@ -419,7 +419,7 @@ func testAPIRepoCreateConflict(t *testing.T, u *url.URL) {
 		httpContext := baseAPITestContext
 
 		httpContext.Reponame = "repo-tmp-17"
-		dstPath, err := ioutil.TempDir("", httpContext.Reponame)
+		dstPath, err := os.MkdirTemp("", httpContext.Reponame)
 		assert.NoError(t, err)
 		defer util.RemoveAll(dstPath)
 		t.Run("CreateRepo", doAPICreateRepository(httpContext, false))

integrations/create_no_session_test.go

@@ -5,7 +5,6 @@
 package integrations
 
 import (
-	"io/ioutil"
 	"net/http"
 	"net/http/httptest"
 	"os"
@@ -69,7 +68,7 @@ func TestSessionFileCreation(t *testing.T) {
 	config.Provider = "file"
 
 	// Now create a temporaryDirectory
-	tmpDir, err := ioutil.TempDir("", "sessions")
+	tmpDir, err := os.MkdirTemp("", "sessions")
 	assert.NoError(t, err)
 	defer func() {
 		if _, err := os.Stat(tmpDir); !os.IsNotExist(err) {