104 lines
1.8 KiB
Go
104 lines
1.8 KiB
Go
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"bufio"
|
||
|
|
"fmt"
|
||
|
|
"io"
|
||
|
|
"os"
|
||
|
|
"strings"
|
||
|
|
|
||
|
|
"github.com/urfave/cli/v2"
|
||
|
|
|
||
|
|
"github.com/filecoin-project/lotus/chain/types"
|
||
|
|
)
|
||
|
|
|
||
|
|
var mathCmd = &cli.Command{
|
||
|
|
Name: "math",
|
||
|
|
Usage: "utility commands around doing math on a list of numbers",
|
||
|
|
Subcommands: []*cli.Command{
|
||
|
|
mathSumCmd,
|
||
|
|
},
|
||
|
|
}
|
||
|
|
|
||
|
|
func readLargeNumbers(i io.Reader) ([]types.BigInt, error) {
|
||
|
|
list := []types.BigInt{}
|
||
|
|
reader := bufio.NewReader(i)
|
||
|
|
|
||
|
|
exit := false
|
||
|
|
for {
|
||
|
|
if exit {
|
||
|
|
break
|
||
|
|
}
|
||
|
|
|
||
|
|
line, err := reader.ReadString('\n')
|
||
|
|
if err != nil && err != io.EOF {
|
||
|
|
break
|
||
|
|
}
|
||
|
|
if err == io.EOF {
|
||
|
|
exit = true
|
||
|
|
}
|
||
|
|
|
||
|
|
line = strings.Trim(line, "\n")
|
||
|
|
|
||
|
|
if len(line) == 0 {
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
|
||
|
|
value, err := types.BigFromString(line)
|
||
|
|
if err != nil {
|
||
|
|
return []types.BigInt{}, fmt.Errorf("failed to parse line: %s", line)
|
||
|
|
}
|
||
|
|
|
||
|
|
list = append(list, value)
|
||
|
|
}
|
||
|
|
|
||
|
|
return list, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
var mathSumCmd = &cli.Command{
|
||
|
|
Name: "sum",
|
||
|
|
Usage: "Sum numbers",
|
||
|
|
Flags: []cli.Flag{
|
||
|
|
&cli.BoolFlag{
|
||
|
|
Name: "avg",
|
||
|
|
Value: false,
|
||
|
|
Usage: "Print the average instead of the sum",
|
||
|
|
},
|
||
|
|
&cli.StringFlag{
|
||
|
|
Name: "format",
|
||
|
|
Value: "raw",
|
||
|
|
Usage: "format the number in a more readable way [fil,bytes2,bytes10]",
|
||
|
|
},
|
||
|
|
},
|
||
|
|
Action: func(cctx *cli.Context) error {
|
||
|
|
list, err := readLargeNumbers(os.Stdin)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
|
||
|
|
val := types.NewInt(0)
|
||
|
|
for _, value := range list {
|
||
|
|
val = types.BigAdd(val, value)
|
||
|
|
}
|
||
|
|
|
||
|
|
if cctx.Bool("avg") {
|
||
|
|
val = types.BigDiv(val, types.NewInt(uint64(len(list))))
|
||
|
|
}
|
||
|
|
|
||
|
|
switch cctx.String("format") {
|
||
|
|
case "byte2":
|
||
|
|
fmt.Printf("%s\n", types.SizeStr(val))
|
||
|
|
case "byte10":
|
||
|
|
fmt.Printf("%s\n", types.DeciStr(val))
|
||
|
|
case "fil":
|
||
|
|
fmt.Printf("%s\n", types.FIL(val))
|
||
|
|
case "raw":
|
||
|
|
fmt.Printf("%s\n", val)
|
||
|
|
default:
|
||
|
|
return fmt.Errorf("Unknown format")
|
||
|
|
}
|
||
|
|
|
||
|
|
return nil
|
||
|
|
},
|
||
|
|
}
|