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Group Args, so we enforce that only _one_ of them can be specified

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Matthias Beyer 2016-03-06 12:42:01 +01:00
parent a61b83df07
commit c1fcf22619
1 changed files with 10 additions and 1 deletions
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11
imag-view/src/ui.rs
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@ -1,4 +1,4 @@
use clap::{Arg, App, SubCommand};
use clap::{Arg, App, ArgGroup, SubCommand};
pub fn build_ui<'a>(app: App<'a, 'a>) -> App<'a, 'a> {
app
@ -86,6 +86,15 @@ pub fn build_ui<'a>(app: App<'a, 'a>) -> App<'a, 'a> {
.takes_value(true) // non-optional, call-string
.required(false)
.help("View content in custom program, for example 'libreoffice %e', replace '%e' with entry path"))
.group(ArgGroup::with_name("viewer")
.args(&["view-in-stdout",
"view-in-ui",
"view-in-browser",
"view-in-texteditor",
"view-in-custom",
])
.required(false))
)
.subcommand(SubCommand::with_name("compile")