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utils.go
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/
utils.go
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package main
import (
"encoding/json"
"errors"
"io/ioutil"
"log"
"strconv"
)
var logErrors bool
// Config all vars
type Config struct {
Base struct {
User string `json:"user"`
Password string `json:"password"`
Dbname string `json:"dbname"`
LogSQL bool `json:"logsql"`
LogErr bool `json:"logerr"`
} `json:"base"`
Web struct {
Host string `json:"host"`
Port string `json:"port"`
Log bool `json:"log"`
} `json:"web"`
}
func getConfig() (Config, error) {
var c Config
file, err := ioutil.ReadFile("./config.json")
if err != nil {
errmsg("getConfig ReadFile", err)
return c, err
}
if err = json.Unmarshal(file, &c); err != nil {
errmsg("getConfig Unmarshal", err)
return c, err
}
logErrors = c.Base.LogErr
if c.Base.Dbname == "" {
err = errors.New("Error: empty database name in config")
errmsg("getConfig", err)
}
return c, err
}
func toInt(num string) int64 {
id, err := strconv.ParseInt(num, 10, 64)
errchkmsg("toInt", err)
return id
}
func round(v float64, decimals int) float64 {
var pow float64 = 1
for i := 0; i < decimals; i++ {
pow *= 10
}
return float64(int((v*pow)+0.5)) / pow
}
func errmsg(str string, err error) {
if logErrors {
log.Println("Error in", str, err)
}
}
func errchkmsg(str string, err error) {
if logErrors && err != nil {
log.Println("Error in", str, err)
}
}