/
util.go
106 lines (90 loc) · 2.01 KB
/
util.go
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package util
import (
"encoding/json"
"fmt"
"golang.org/x/net/html/charset"
"io/ioutil"
"net/http"
"os"
"regexp"
"strconv"
"time"
)
// CheckErr check error is nil and if not panic with message
func CheckErr(err error, msg ...interface{}) {
if err != nil {
AnyLog.Panicln(err, msg)
}
}
// CheckOk check ok
func CheckOk(ok bool, msg ...interface{}) {
if !ok {
AnyLog.Panicln(msg)
}
}
func CheckMatchesRegexp(regexpStr string, str string) {
re, err := regexp.Compile(regexpStr)
CheckErr(err, "Unable to compile "+regexpStr)
CheckOk(re.MatchString(str), fmt.Sprintf("String '%s' not matched by regExp '%s'", str, regexpStr))
}
func Atoi(s string) int {
r, err := strconv.Atoi(s)
CheckErr(err, "unable to parse string to int"+s)
return r
}
func PrintJson(i interface{}) {
j, err := json.Marshal(i)
CheckErr(err)
fmt.Println("JSON: ", string(j))
}
func GetJson(i interface{}) string {
j, err := json.Marshal(i)
CheckErr(err)
return string(j)
}
func IsFileExists(name string) bool {
if _, err := os.Stat(name); err != nil {
if os.IsNotExist(err) {
return false
}
}
return true
}
func GetUrlContent(url string) (body []byte, err error) {
resp, err := http.Get(url)
if resp != nil {
defer resp.Body.Close()
}
if err != nil {
return
}
utf8, err := charset.NewReader(resp.Body, resp.Header.Get("Content-Type"))
if err != nil {
return
}
body, err = ioutil.ReadAll(utf8)
return
}
func DownloadUrlToFile(url, path string) (data []byte, err error) {
data, err = GetUrlContent(url)
if err != nil {
return
}
ioutil.WriteFile(path, data, 0644)
return
}
func DownloadUrlToFileIfNotExists(url, path string) (data []byte, err error) {
if !IsFileExists(path) {
return DownloadUrlToFile(url, path)
}
data, err = ioutil.ReadFile(path)
return
}
// 2014-05-18kshdfjkhsdf
func ParseForumDate(dateStr string) time.Time {
year := dateStr[:4]
monthStr := dateStr[5:7]
day := dateStr[8:10]
month := time.Month(Atoi(monthStr))
return time.Date(Atoi(year), month, Atoi(day), 0, 0, 0, 0, time.UTC)
}