// setDumperValue returns a conf.Value whose Set method sets
// g.dumper to v.
func setDumperValue(v int) conf.Value {
return conf.FuncValue(func(string) error {
if g.dumper != 0 {
return errors.New("-b, -C, -G, -o and -r are incompatible")
}
g.dumper = v
return nil
})
}
func parseFlags() []string {
var vars = []conf.Var{
{Flag: 'h', Kind: conf.NoArg, Val: conf.FuncValue(help)},
{Flag: 'b', Kind: conf.NoArg, Val: setDumperValue(BinDumper)},
{Flag: 'o', Kind: conf.NoArg, Val: setDumperValue(OctDumper)},
{Flag: 'C', Kind: conf.NoArg, Val: setDumperValue(CDumper)},
{Flag: 'G', Kind: conf.NoArg, Val: setDumperValue(GoDumper)},
{Flag: 'r', Kind: conf.NoArg, Val: setDumperValue(Undumper)},
{Flag: 'e', Kind: conf.NoArg, Val: (*conf.BoolValue)(&g.le)},
{Flag: 'c', Val: (*smallValue)(&g.cols)},
{Flag: 'g', Val: (*smallValue)(&g.group)},
{Flag: 'l', Val: (*int63Value)(&g.length)},
{Flag: 'd', Val: (*conf.Int64Value)(&g.pos)},
{Flag: 's', Val: (*conf.Int64Value)(&g.seek)},
{Flag: 'O', Val: (*conf.StringValue)(&g.outfile)},
{Flag: 'P', Val: (*conf.StringValue)(&g.pkg)},
{Flag: 'V', Val: (*conf.StringValue)(&g.ident)},
}
if err := conf.GetOpt(vars); err != nil {
os.Stderr.WriteString(err.Error() + "\n")
help("")
}
if g.dumper == Undumper {
g.rev = true
if g.le {
os.Stderr.WriteString("-e and -r are incompatible\n")
help("")
}
} else {
if g.cols == 0 {
g.cols = dumpers[g.dumper].defCols
}
if g.group == 0 {
g.group = dumpers[g.dumper].defGroup
}
if g.ident == "" && len(conf.Args) != 0 {
g.ident = makeIdent(conf.Args[0])
}
}
return conf.Args
}