all: replace io/ioutil with io and os package

Signed-off-by: cui fliter <[email protected]>
golang · Sep 17, 2022 · 6a58019 · 6a58019
1 parent c1b48ff
commit 6a58019
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Showing 13 changed files with 32 additions and 42 deletions.
diff --git a/cmd/bent/bent.go b/cmd/bent/bent.go
@@ -15,7 +15,6 @@ import (
 	"flag"
 	"fmt"
 	"io/fs"
-	"io/ioutil"
 	"math/rand"
 	"os"
 	"os/exec"
@@ -226,17 +225,17 @@ results will also appear in 'bench'.
 	}
 
 	todo := &Todo{}
-	blobB, err := ioutil.ReadFile(benchFile)
+	blobB, err := os.ReadFile(benchFile)
 	if err != nil {
 		fmt.Printf("There was an error opening or reading file %s: %v\n", benchFile, err)
 		os.Exit(1)
 	}
-	blobC, err := ioutil.ReadFile(confFile)
+	blobC, err := os.ReadFile(confFile)
 	if err != nil {
 		fmt.Printf("There was an error opening or reading file %s: %v\n", confFile, err)
 		os.Exit(1)
 	}
-	blobS, err := ioutil.ReadFile(suiteFile)
+	blobS, err := os.ReadFile(suiteFile)
 	if err != nil {
 		fmt.Printf("There was an error opening or reading file %s: %v\n", suiteFile, err)
 		os.Exit(1)
@@ -1130,7 +1129,7 @@ func checkAndSetUpFileSystem(shouldInit bool) error {
 			copyAsset(configs, "configs", s)
 		}
 
-		err := ioutil.WriteFile("Dockerfile",
+		err := os.WriteFile("Dockerfile",
 			[]byte(`
 FROM ubuntu
 ADD . /
@@ -1172,7 +1171,7 @@ func copyAsset(fs embed.FS, dir, file string) {
 		fmt.Printf("Error reading asset %s\n", file)
 		os.Exit(1)
 	}
-	err = ioutil.WriteFile(file, bytes, 0664)
+	err = os.WriteFile(file, bytes, 0664)
 	if err != nil {
 		fmt.Printf("Error writing %s\n", file)
 		os.Exit(1)

diff --git a/driver/driver_linux.go b/driver/driver_linux.go
@@ -11,7 +11,6 @@ import (
 	"bufio"
 	"bytes"
 	"io"
-	"io/ioutil"
 	"log"
 	"os"
 	"os/exec"
@@ -105,7 +104,7 @@ func Size(file string) string {
 }
 
 func getVMPeak() uint64 {
-	data, err := ioutil.ReadFile("/proc/self/status")
+	data, err := os.ReadFile("/proc/self/status")
 	if err != nil {
 		log.Printf("Failed to read /proc/self/status: %v", err)
 		return 0

diff --git a/driver/driver_plan9.go b/driver/driver_plan9.go
@@ -7,8 +7,8 @@ package driver
 import (
 	"bytes"
 	"fmt"
-	"io/ioutil"
 	"log"
+	"os"
 	"os/exec"
 	"strconv"
 	"strings"
@@ -72,7 +72,7 @@ func RunAndCollectSysStats(cmd *exec.Cmd, res *Result, N uint64, prefix string)
 }
 
 func procCPUTime() (uint64, error) {
-	b, err := ioutil.ReadFile("/dev/cputime")
+	b, err := os.ReadFile("/dev/cputime")
 	if err != nil {
 		return 0, err
 	}

diff --git a/garbage/nethttp.go b/garbage/nethttp.go
diff --git a/http/http.go b/http/http.go
@@ -7,7 +7,7 @@ package main
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net"
 	"net/http"
@@ -51,7 +51,7 @@ func makeOneRequest() bool {
 		return false
 	}
 	defer res.Body.Close()
-	b, err := ioutil.ReadAll(res.Body)
+	b, err := io.ReadAll(res.Body)
 	if err != nil {
 		log.Fatalf("ReadAll: %v", err)
 	}

diff --git a/json/json.go b/json/json.go
@@ -12,7 +12,6 @@ import (
 	"encoding/base64"
 	"encoding/json"
 	"io"
-	"io/ioutil"
 
 	"golang.org/x/benchmarks/driver"
 )
@@ -47,7 +46,7 @@ func makeBytes() []byte {
 	r = bytes.NewReader(bytes.Replace(jsonbz2_base64, []byte{'\n'}, nil, -1))
 	r = base64.NewDecoder(base64.StdEncoding, r)
 	r = bzip2.NewReader(r)
-	b, err := ioutil.ReadAll(r)
+	b, err := io.ReadAll(r)
 	if err != nil {
 		panic(err)
 	}

diff --git a/sweet/benchmarks/biogo-igor/igor.go b/sweet/benchmarks/biogo-igor/igor.go
@@ -10,8 +10,8 @@ import (
 	"bytes"
 	"flag"
 	"fmt"
-	"io/ioutil"
 	"log"
+	"os"
 	"runtime"
 
 	"golang.org/x/benchmarks/sweet/benchmarks/internal/driver"
@@ -41,7 +41,7 @@ func main() {
 		log.Fatal("error: input GFF file required")
 	}
 
-	data, err := ioutil.ReadFile(flag.Arg(0))
+	data, err := os.ReadFile(flag.Arg(0))
 	if err != nil {
 		log.Fatalf("error: %v", err)
 	}

diff --git a/sweet/benchmarks/internal/driver/mem_linux.go b/sweet/benchmarks/internal/driver/mem_linux.go
@@ -6,7 +6,6 @@ package driver
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"regexp"
 	"strconv"
@@ -20,7 +19,7 @@ var (
 )
 
 func readStat(pid int, r *regexp.Regexp) (uint64, error) {
-	b, err := ioutil.ReadFile(fmt.Sprintf("/proc/%d/status", pid))
+	b, err := os.ReadFile(fmt.Sprintf("/proc/%d/status", pid))
 	if err != nil {
 		return 0, err
 	}

diff --git a/sweet/benchmarks/markdown/main.go b/sweet/benchmarks/markdown/main.go
@@ -8,7 +8,6 @@ import (
 	"bytes"
 	"flag"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -18,15 +17,15 @@ import (
 )
 
 func run(mddir string) error {
-	files, err := ioutil.ReadDir(mddir)
+	files, err := os.ReadDir(mddir)
 	if err != nil {
 		return err
 	}
 
 	contents := make([][]byte, 0, len(files))
 	for _, file := range files {
 		if !file.IsDir() && filepath.Ext(file.Name()) == ".md" {
-			content, err := ioutil.ReadFile(filepath.Join(mddir, file.Name()))
+			content, err := os.ReadFile(filepath.Join(mddir, file.Name()))
 			if err != nil {
 				return err
 			}

diff --git a/sweet/cmd/sweet/benchmark.go b/sweet/cmd/sweet/benchmark.go
@@ -8,7 +8,6 @@ import (
 	"errors"
 	"fmt"
 	"io/fs"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"runtime"
@@ -157,7 +156,7 @@ func copyDirContents(dst, src string) error {
 
 func rmDirContents(dir string) error {
 	log.CommandPrintf("rm -rf %s/*", dir)
-	fs, err := ioutil.ReadDir(dir)
+	fs, err := os.ReadDir(dir)
 	if err != nil {
 		return err
 	}

diff --git a/sweet/cmd/sweet/run.go b/sweet/cmd/sweet/run.go
@@ -10,7 +10,6 @@ import (
 	"fmt"
 	"io"
 	"io/fs"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"sort"
@@ -157,7 +156,7 @@ func (c *runCmd) Run(args []string) error {
 	var err error
 	if c.workDir == "" {
 		// Create a temporary work tree for running the benchmarks.
-		c.workDir, err = ioutil.TempDir("", "gosweet")
+		c.workDir, err = os.MkdirTemp("", "gosweet")
 		if err != nil {
 			return fmt.Errorf("creating work root: %w", err)
 		}
@@ -238,7 +237,7 @@ func (c *runCmd) Run(args []string) error {
 		configDir := filepath.Dir(configFile)
 
 		// Read and parse the configuration file.
-		b, err := ioutil.ReadFile(configFile)
+		b, err := os.ReadFile(configFile)
 		if err != nil {
 			return fmt.Errorf("failed to read %q: %v", configFile, err)
 		}

diff --git a/sweet/generators/gvisor.go b/sweet/generators/gvisor.go
@@ -9,7 +9,6 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -67,7 +66,7 @@ func (_ GVisor) Generate(cfg *common.GenConfig) error {
 	// copy of runsc. Get and build it from the harness.
 	//
 	// Create a temporary directory where we can put the gVisor source.
-	tmpDir, err := ioutil.TempDir("", "gvisor-gen")
+	tmpDir, err := os.MkdirTemp("", "gvisor-gen")
 	if err != nil {
 		return err
 	}

diff --git a/sweet/generators/tile38.go b/sweet/generators/tile38.go
@@ -9,7 +9,6 @@ import (
 	"bytes"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -68,7 +67,7 @@ func (_ Tile38) Generate(cfg *common.GenConfig) error {
 
 	// Create a temporary directory where we can put the Tile38
 	// source and build it.
-	tmpDir, err := ioutil.TempDir("", "tile38-gen")
+	tmpDir, err := os.MkdirTemp("", "tile38-gen")
 	if err != nil {
 		return err
 	}
@@ -292,7 +291,7 @@ func storeGeoObj(c redis.Conn, g *geoObj) error {
 // storeGeoJSON writes an entire GeoJSON object (which may contain many polygons)
 // to a Tile38 database.
 func storeGeoJSON(c redis.Conn, jsonFile string) error {
-	b, err := ioutil.ReadFile(jsonFile)
+	b, err := os.ReadFile(jsonFile)
 	if err != nil {
 		return err
 	}