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swarm: replaced subroutines with defer

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This commit is contained in:
nolash 2017-03-04 19:58:28 +01:00
parent 61b2ef3be8
commit 5841970c18
1 changed files with 15 additions and 44 deletions
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59
cmd/swarm/upload.go
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@ -36,35 +36,6 @@ import (
"gopkg.in/urfave/cli.v1"
)
func cleanupAndDie(file *string, description string) {
if file != nil {
os.Remove(*file)
}
utils.Fatalf(description)
}
func swapStdin(f *os.File) (size int) {
b := make([]byte, 1024)
path := f.Name()
size = 0
r := io.TeeReader(os.Stdin, f)
for true {
n, err := r.Read(b)
if err == io.EOF {
break
} else if err != nil {
cleanupAndDie(&path, "STDIN read failed")
}
size += n
}
if size == 0 {
cleanupAndDie(&path, "STDIN zero length input")
}
return size
}
func upload(ctx *cli.Context) {
args := ctx.Args()
@ -80,17 +51,21 @@ func upload(ctx *cli.Context) {
var client = &client{api: bzzapi}
var entry manifestEntry
var file string
var cleanfile *string
if len(args) != 1 {
if fromStdin {
f, err := ioutil.TempFile("", "swarm-stdin")
tmp, err := ioutil.TempFile("", "swarm-stdin")
if err != nil {
utils.Fatalf("Could not create tempfile")
utils.Fatalf("error create tempfile: %s", err)
}
swapStdin(f)
file = f.Name()
cleanfile = &file
defer os.Remove(tmp.Name())
n, err := io.Copy(tmp, os.Stdin)
if err != nil {
utils.Fatalf("error copying stdin to tempfile: %s", err)
} else if n == 0 {
utils.Fatalf("error reading from stdin: zero length")
}
file = tmp.Name()
} else {
utils.Fatalf("Need filename as the first and only argument")
}
@ -100,29 +75,25 @@ func upload(ctx *cli.Context) {
fi, err := os.Stat(expandPath(file))
if err != nil {
cleanupAndDie(cleanfile, fmt.Sprintf("Failed to stat file: %v", err))
utils.Fatalf("Failed to stat file: %v", err)
}
if fi.IsDir() {
if !recursive {
cleanupAndDie(cleanfile, "Argument is a directory and recursive upload is disabled")
utils.Fatalf("Argument is a directory and recursive upload is disabled")
}
if !wantManifest {
cleanupAndDie(cleanfile, "Manifest is required for directory uploads")
utils.Fatalf("Manifest is required for directory uploads")
}
mhash, err := client.uploadDirectory(file, defaultPath)
if err != nil {
cleanupAndDie(cleanfile, fmt.Sprintf("Failed to upload directory: %v", err))
utils.Fatalf("Failed to upload directory: %v", err)
}
fmt.Println(mhash)
return
}
entry, err = client.uploadFile(file, fi, mimeType)
if err != nil {
cleanupAndDie(cleanfile, fmt.Sprintf("Upload failed: %v", err))
}
if cleanfile != nil {
os.Remove(file)
cleanfile = nil
utils.Fatalf("Upload failed: %v", err)
}
mroot := manifest{[]manifestEntry{entry}}
if !wantManifest {