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flags.go
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flags.go
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package main
import (
"errors"
"flag"
"fmt"
"log"
"os"
"path/filepath"
"github.com/gohxs/cloudmount/internal/core"
"github.com/gohxs/cloudmount/internal/coreutil"
)
func parseFlags(config *core.Config) (err error) {
var mountoptsFlag string
flag.StringVar(&config.Type, "t", config.Type, "which cloud service to use [gdrive,dropbox]")
flag.BoolVar(&config.Foreground, "f", false, "Run app in foreground")
flag.BoolVar(&config.VerboseLog, "v", false, "Verbose log")
flag.BoolVar(&config.Verbose2Log, "vv", false, "Extra Verbose log")
flag.StringVar(&config.HomeDir, "w", config.HomeDir, "Work dir, path that holds configurations")
flag.DurationVar(&config.RefreshTime, "r", config.RefreshTime, "Timed cloud synchronization interval [if applied]")
flag.StringVar(&mountoptsFlag, "o", "", fmt.Sprintf("%v", config.Options))
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "\n")
fmt.Fprintf(os.Stderr, "Usage: %s [options] [<source>] <directory>\n\n", os.Args[0])
fmt.Fprintf(os.Stderr, "Source: can be json/yaml configuration file usually with credentials or cloud specific configuration\n\n")
fmt.Fprintf(os.Stderr, "Options:\n")
flag.PrintDefaults()
fmt.Fprintf(os.Stderr, "\n")
}
flag.Parse()
fileExt := filepath.Ext(os.Args[0])
if fileExt != "" {
if config.Type != "" {
log.Fatal("Cannot specify -t when type is specified in executable name")
}
config.Type = fileExt[1:]
}
if flag.NArg() < 1 {
flag.Usage()
//fmt.Println("Usage:\n gdrivemount [-d] [-v] <SRC/CONFIG> <MOUNTPOINT>")
return errors.New("Missing parameter")
}
if flag.NArg() == 1 {
config.Source = filepath.Join(config.HomeDir, config.Type+".yaml")
config.Target = flag.Arg(0)
} else {
config.Source = flag.Arg(0)
config.Target = flag.Arg(1)
}
if config.Verbose2Log {
config.VerboseLog = true
}
// Read fs type from config file
sourceType := struct {
Type string `json:"type"`
}{}
coreutil.ParseConfig(config.Source, &sourceType)
if sourceType.Type != "" {
if config.Type != "" && sourceType.Type != config.Type {
log.Fatalf("ERR: service mismatch <source> specifies '%s' while flag -t is '%s'", sourceType.Type, config.Type)
}
config.Type = sourceType.Type
}
if config.Type == "" {
log.Fatalf("ERR: Missing -t param, unknown file system")
}
err = coreutil.ParseOptions(mountoptsFlag, &config.Options)
if err != nil {
log.Fatal("ERR: Invalid syntax parsing mount options")
}
return
}