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package main
import (
"bytes"
"os"
"os/exec"
"path/filepath"
"runtime"
"strings"
"text/template"
"github.com/BurntSushi/toml"
)
type TemplateData struct {
OS string
Arch string
Hostname string
Home string
Vars map[string]interface{}
}
func buildFuncMap() template.FuncMap {
return map[string]interface{}{
"pass": lookupPassword,
"env": os.Getenv,
}
}
func lookupPassword(name string) (string, error) {
out, err := exec.Command("pass", name).CombinedOutput()
if err != nil {
return "", err
}
buf := bytes.NewBuffer(out)
line, err := buf.ReadBytes('\n')
if err != nil {
return "", err
}
return strings.TrimRight(string(line), "\n"), nil
}
func getTemplateData(conf *Conf) (*TemplateData, error) {
vars, err := readVars(conf)
if err != nil {
return nil, err
}
data := &TemplateData{
OS: runtime.GOOS,
Arch: runtime.GOARCH,
Vars: vars,
}
if host, err := os.Hostname(); err != nil {
return nil, err
} else {
data.Hostname = host
}
if home, err := os.UserHomeDir(); err != nil {
return nil, err
} else {
data.Home = home
}
return data, nil
}
func readVars(conf *Conf) (map[string]interface{}, error) {
var vars map[string]interface{}
if _, err := toml.DecodeFile(filepath.Join(conf.Source, "vars.toml"), &vars); err != nil {
return nil, err
}
return vars, nil
}
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