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@@ -10,7 +10,7 @@
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Define flags using flag.String(), Bool(), Int(), etc.
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This declares an integer flag, -f or --flagname, stored in the pointer ip, with type *int.
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- import "flag"
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+ import "flag /github.com/dotcloud/docker/pkg/mflag"
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var ip = flag.Int([]string{"f", "-flagname"}, 1234, "help message for flagname")
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If you like, you can bind the flag to a variable using the Var() functions.
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var flagvar int
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@@ -23,6 +23,18 @@
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flag.Var(&flagVal, []string{"name"}, "help message for flagname")
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For such flags, the default value is just the initial value of the variable.
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+ You can also add "deprecated" flags, they are still usable, bur are not shown
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+ in the usage and will display a warning when you try to use them:
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+ var ip = flag.Int([]string{"f", "#flagname", "-flagname"}, 1234, "help message for flagname")
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+ this will display: `Warning: '-flagname' is deprecated, it will be replaced by '--flagname' soon. See usage.` and
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+ var ip = flag.Int([]string{"f", "#flagname"}, 1234, "help message for flagname")
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+ will display: `Warning: '-t' is deprecated, it will be removed soon. See usage.`
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+
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+ You can also group one letter flags, bif you declare
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+ var v = flag.Bool([]string{"v", "-verbose"}, false, "help message for verbose")
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+ var s = flag.Bool([]string{"s", "-slow"}, false, "help message for slow")
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+ you will be able to use the -vs or -sv
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+
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After all flags are defined, call
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flag.Parse()
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to parse the command line into the defined flags.
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unclejack