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Merge pull request #36 from nirs/convert-package
Add parallel convert
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,88 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "errors" | ||
| "flag" | ||
| "fmt" | ||
| "os" | ||
|
|
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| "github.com/lima-vm/go-qcow2reader" | ||
| "github.com/lima-vm/go-qcow2reader/convert" | ||
| "github.com/lima-vm/go-qcow2reader/log" | ||
| ) | ||
|
|
||
| func cmdConvert(args []string) error { | ||
| var ( | ||
| // Required | ||
| source, target string | ||
|
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| // Options | ||
| debug bool | ||
| options convert.Options | ||
| ) | ||
|
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| fs := flag.NewFlagSet("convert", flag.ExitOnError) | ||
| fs.Usage = func() { | ||
| fmt.Fprintf(flag.CommandLine.Output(), "Usage: %s convert [OPTIONS...] SOURCE TARGET\n", os.Args[0]) | ||
| flag.PrintDefaults() | ||
| } | ||
| fs.BoolVar(&debug, "debug", false, "enable printing debug messages") | ||
| fs.Int64Var(&options.SegmentSize, "segment-size", convert.SegmentSize, "worker segment size in bytes") | ||
| fs.IntVar(&options.BufferSize, "buffer-size", convert.BufferSize, "buffer size in bytes") | ||
| fs.IntVar(&options.Workers, "workers", convert.Workers, "number of workers") | ||
| if err := fs.Parse(args); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if debug { | ||
| log.SetDebugFunc(logDebug) | ||
| } | ||
|
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| switch len(fs.Args()) { | ||
| case 0: | ||
| return errors.New("no file was specified") | ||
| case 1: | ||
| return errors.New("target file is required") | ||
| case 2: | ||
| source = fs.Arg(0) | ||
| target = fs.Arg(1) | ||
| default: | ||
| return errors.New("too many files were specified") | ||
| } | ||
|
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| f, err := os.Open(source) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer f.Close() | ||
|
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| img, err := qcow2reader.Open(f) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer img.Close() | ||
|
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| t, err := os.Create(target) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer t.Close() | ||
|
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| if err := t.Truncate(img.Size()); err != nil { | ||
| return err | ||
| } | ||
|
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| c, err := convert.New(options) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if err := c.Convert(t, img, img.Size()); err != nil { | ||
| return err | ||
| } | ||
|
|
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| if err := t.Sync(); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| return t.Close() | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "errors" | ||
| "flag" | ||
| "fmt" | ||
| "os" | ||
|
|
||
| "github.com/lima-vm/go-qcow2reader" | ||
| "github.com/lima-vm/go-qcow2reader/image" | ||
| ) | ||
|
|
||
| func cmdInfo(args []string) error { | ||
| var ( | ||
| // Required | ||
| filename string | ||
|
|
||
| // Options | ||
| debug bool | ||
| ) | ||
|
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| fs := flag.NewFlagSet("info", flag.ExitOnError) | ||
| fs.Usage = func() { | ||
| fmt.Fprintf(fs.Output(), "Usage: %s info [OPTIONS...] FILE\n", os.Args[0]) | ||
| fs.PrintDefaults() | ||
| } | ||
| fs.BoolVar(&debug, "debug", false, "enable printing debug messages") | ||
| if err := fs.Parse(args); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| switch len(fs.Args()) { | ||
| case 0: | ||
| return errors.New("no file was specified") | ||
| case 1: | ||
| filename = fs.Arg(0) | ||
| default: | ||
| return errors.New("too many files specified") | ||
| } | ||
|
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| f, err := os.Open(filename) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer f.Close() | ||
|
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| img, err := qcow2reader.Open(f) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer img.Close() | ||
|
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| imgInfo := image.NewImageInfo(img) | ||
| j, err := json.MarshalIndent(imgInfo, "", " ") | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if _, err = fmt.Println(string(j)); err != nil { | ||
| return err | ||
| } | ||
| if err = img.Readable(); err != nil { | ||
| logWarn(err.Error()) | ||
| } | ||
|
|
||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "errors" | ||
| "flag" | ||
| "fmt" | ||
| "io" | ||
| "os" | ||
|
|
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| "github.com/lima-vm/go-qcow2reader" | ||
| "github.com/lima-vm/go-qcow2reader/log" | ||
| ) | ||
|
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| func cmdRead(args []string) error { | ||
| var ( | ||
| // Required | ||
| filename string | ||
|
|
||
| // Options | ||
| debug bool | ||
| bufferSize int | ||
| offset int64 | ||
| length int64 | ||
| ) | ||
|
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| fs := flag.NewFlagSet("read", flag.ExitOnError) | ||
| fs.Usage = func() { | ||
| fmt.Fprintf(fs.Output(), "Usage: %s read [OPTIONS...] FILE\n", os.Args[0]) | ||
| flag.PrintDefaults() | ||
| } | ||
| fs.BoolVar(&debug, "debug", false, "enable printing debug messages") | ||
| fs.IntVar(&bufferSize, "buffer-size", 65536, "buffer size") | ||
| fs.Int64Var(&offset, "offset", 0, "offset to read") | ||
| fs.Int64Var(&length, "length", -1, "length to read") | ||
| if err := fs.Parse(args); err != nil { | ||
| return err | ||
| } | ||
|
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| if debug { | ||
| log.SetDebugFunc(logDebug) | ||
| } | ||
|
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| switch len(fs.Args()) { | ||
| case 0: | ||
| return errors.New("no file was specified") | ||
| case 1: | ||
| filename = fs.Arg(0) | ||
| default: | ||
| return errors.New("too many files were specified") | ||
| } | ||
|
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| f, err := os.Open(filename) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer f.Close() | ||
|
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| img, err := qcow2reader.Open(f) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer img.Close() | ||
|
|
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| if length < 0 { | ||
| length = img.Size() | ||
| } | ||
|
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| buf := make([]byte, bufferSize) | ||
| sr := io.NewSectionReader(img, offset, length) | ||
| _, err = io.CopyBuffer(os.Stdout, sr, buf) | ||
|
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| return err | ||
| } |
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