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update godoc and add MAINTAINERS for mflags

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Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)
This commit is contained in:
Victor Vieux 2014-03-14 17:35:41 +00:00
parent 5c6d54073f
commit a41f6d9367
2 changed files with 14 additions and 1 deletions
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1
pkg/mflag/MAINTAINERS Normal file
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@ -0,0 +1 @@
Victor Vieux <victor.vieux@docker.com> (@vieux)

14
pkg/mflag/flag.go
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@ -10,7 +10,7 @@
Define flags using flag.String(), Bool(), Int(), etc.
This declares an integer flag, -f or --flagname, stored in the pointer ip, with type *int.
import "flag"
import "flag /github.com/dotcloud/docker/pkg/mflag"
var ip = flag.Int([]string{"f", "-flagname"}, 1234, "help message for flagname")
If you like, you can bind the flag to a variable using the Var() functions.
var flagvar int
@ -23,6 +23,18 @@
flag.Var(&flagVal, []string{"name"}, "help message for flagname")
For such flags, the default value is just the initial value of the variable.
You can also add "deprecated" flags, they are still usable, bur are not shown
in the usage and will display a warning when you try to use them:
var ip = flag.Int([]string{"f", "#flagname", "-flagname"}, 1234, "help message for flagname")
this will display: `Warning: '-flagname' is deprecated, it will be replaced by '--flagname' soon. See usage.` and
var ip = flag.Int([]string{"f", "#flagname"}, 1234, "help message for flagname")
will display: `Warning: '-t' is deprecated, it will be removed soon. See usage.`
You can also group one letter flags, bif you declare
var v = flag.Bool([]string{"v", "-verbose"}, false, "help message for verbose")
var s = flag.Bool([]string{"s", "-slow"}, false, "help message for slow")
you will be able to use the -vs or -sv
After all flags are defined, call
flag.Parse()
to parse the command line into the defined flags.