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util.go
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/
util.go
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package main
import (
"context"
"fmt"
"github.com/melvinto/ble"
"github.com/pkg/errors"
"github.com/urfave/cli"
)
func doGetUUID(c *cli.Context) error {
if c.String("uuid") != "" {
u, err := ble.Parse(c.String("uuid"))
if err != nil {
return errInvalidUUID
}
curr.uuid = u
}
if curr.uuid == nil {
return errNoUUID
}
return nil
}
func doConnect(c *cli.Context) error {
if c.String("addr") != "" {
curr.addr = ble.NewAddr(c.String("addr"))
curr.client = curr.clients[curr.addr.String()]
}
if curr.client != nil {
return nil
}
return cmdConnect(c)
}
func doDiscover(c *cli.Context) error {
if curr.profile != nil {
return nil
}
return cmdDiscover(c)
}
func chkErr(err error) error {
switch errors.Cause(err) {
case context.DeadlineExceeded:
// Sepcified duration passed, which is the expected case.
return nil
case context.Canceled:
fmt.Printf("\n(Canceled)\n")
return nil
}
return err
}