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xkcd.go
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xkcd.go
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package main
import (
"flag"
"fmt"
xkcdlib "github.com/huskerona/xkcd/xkcd-lib"
"log"
"os"
"os/user"
"time"
)
var verbose = flag.Bool("v", false, "verbose printout of the operations.")
var showOIP = flag.Bool("o", false, "show offline index path and quit")
var writeLog = flag.Bool("l", false, "write to log file (xkcd.log)")
func main() {
flag.Parse()
xkcdlib.SetVerboseFlag(*verbose)
setOfflineFolderForUser()
if err := xkcdlib.IsOfflineIndexAvailable(xkcdlib.OfflineIndexPath); err != nil {
log.Fatal(err)
}
logFile, err := setLogFile()
if err != nil {
log.Fatal(err)
}
defer logFile.Close()
xkcdlib.SetLogFile(logFile)
if *showOIP {
fmt.Printf("Index folder at: %s\n", xkcdlib.OfflineIndexPath)
os.Exit(0)
}
start := time.Now()
if err := xkcdlib.SyncAll(); err != nil {
log.Fatal(err)
}
fmt.Printf("\nDuration: %s\n", time.Since(start))
os.Exit(0)
}
func setOfflineFolderForUser() {
currentUser, err := user.Current()
if err != nil {
log.Fatal(err)
}
xkcdlib.SetOfflineIndexPath(currentUser.HomeDir)
}
func setLogFile() (logFile *os.File, err error) {
if *writeLog {
logPath := fmt.Sprintf("%s%cxkcd.log", xkcdlib.OfflineIndexPath, os.PathSeparator)
if _, err := os.Stat(logPath); os.IsNotExist(err) {
if logFile, err = os.Create(logPath); err != nil {
return nil, err
}
} else {
if logFile, err = os.Open(logPath); err != nil {
return nil, err
}
}
} else {
if logFile, err = os.Create(os.DevNull); err != nil {
log.Fatal(err)
}
}
return
}