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cmd_hosts.go
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/
cmd_hosts.go
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package main
import (
"bytes"
"flag"
"fmt"
"github.com/mitchellh/cli"
"text/template"
)
//
// Implement the "hosts" command
type CmdHost struct {
CmdDefault
}
func CmdHostFactory(ui cli.Ui) func() (cli.Command, error) {
return func() (cli.Command, error) {
return &CmdHost{
CmdDefault: CmdDefault{Ui: ui},
}, nil
}
}
func (c *CmdHost) Run(args []string) int {
c.InitFlagSet()
if err := c.FS.Parse(args); err != nil {
if err != flag.ErrHelp {
c.Ui.Error(fmt.Sprintf("Unable to parse arguments: %s", err))
}
return 1
}
state, err := fetchState(c.Dir)
if err != nil {
return 1
}
instances, err := parseState(*state)
if err != nil {
c.Ui.Error(fmt.Sprintf("Unable to parse state file: %s", err))
return 1
}
tString, err := FSString(isDev, "/templates/etc-hosts")
if err != nil {
c.Ui.Error(fmt.Sprintf("Unable to read etc-hosts: %s", err))
return 1
}
t, err := template.New("etc-hosts").Parse(tString)
if err != nil {
c.Ui.Error(fmt.Sprintf("Unable to parse etc-hosts: %s", err))
return 1
}
output := bytes.NewBuffer([]byte{})
err = t.Execute(output, instances)
if err != nil {
c.Ui.Error(fmt.Sprintf("Unable to execute hosts template: %s", err))
return 1
}
c.Ui.Output(output.String())
return 0
}
func (c *CmdHost) Synopsis() string {
return "Generate an /etc/hosts fragment."
}