func NewWriter(path string) (*Writer, error) {
config, err := slack.ReadConfig(path)
if err != nil {
return nil, err
}
w := Writer{
Config: config,
}
return &w, nil
}
func main() {
cfg, err := slackcat.ReadConfig()
if err != nil {
fmt.Fprintf(os.Stderr, "Could not read config: %v\n", err)
os.Exit(1)
}
// By default use "user@server", unless overridden by config. cfg.Username
// can be "", implying Slack should use the default username, so we have
// to check if the value was set, not just for a non-empty string.
defaultName := username()
if cfg.Username != "" {
defaultName = cfg.Username
}
pflag.Usage = func() {
fmt.Fprintln(os.Stderr, "Usage: slackcat [-c #channel] [-n name] [-i icon] [message]")
os.Exit(0)
}
channel := pflag.StringP("channel", "c", cfg.Channel, "channel")
name := pflag.StringP("name", "n", defaultName, "name")
icon := pflag.StringP("icon", "i", "", "icon")
pflag.Parse()
// was there a message on the command line? If so use it.
args := pflag.Args()
if len(args) > 0 {
msg := slackcat.SlackMsg{
Channel: *channel,
Username: *name,
Parse: "full",
Text: strings.Join(args, " "),
IconEmoji: *icon,
}
err = msg.Post(cfg.WebhookUrl)
if err != nil {
fmt.Fprintf(os.Stderr, "Post failed: %v\n", err)
os.Exit(1)
}
os.Exit(0)
}
// ...Otherwise scan stdin
scanner := bufio.NewScanner(os.Stdin)
for scanner.Scan() {
msg := slackcat.SlackMsg{
Channel: *channel,
Username: *name,
Parse: "full",
Text: scanner.Text(),
IconEmoji: *icon,
}
err = msg.Post(cfg.WebhookUrl)
if err != nil {
fmt.Fprintf(os.Stderr, "Post failed: %v\n", err)
os.Exit(1)
}
}
if err := scanner.Err(); err != nil {
fmt.Fprintf(os.Stderr, "Error reading: %v\n", err)
os.Exit(1)
}
os.Exit(0)
}