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use {
crate::{
errors::ProgramError,
shell_install::ShellInstallState,
},
clap::{self, ArgMatches},
std::{
env,
str::FromStr,
},
};
/// launch arguments related to installation
/// (not used by the application after the first step)
pub struct InstallLaunchArgs {
pub install: Option<bool>, // installation is required
pub set_install_state: Option<ShellInstallState>, // the state to set
pub print_shell_function: Option<String>, // shell function to print on stdout
}
impl InstallLaunchArgs {
pub fn from(cli_args: &ArgMatches) -> Result<Self, ProgramError> {
let mut install = None;
if let Ok(s) = env::var("BR_INSTALL") {
if s == "yes" {
install = Some(true);
} else if s == "no" {
install = Some(false);
} else {
warn!("Unexpected value of BR_INSTALL: {:?}", s);
}
}
// the cli arguments may override the env var value
if cli_args.is_present("install") {
install = Some(true);
} else if cli_args.value_of("cmd-export-path").is_some() {
install = Some(false);
}
let print_shell_function = cli_args
.value_of("print-shell-function")
.map(str::to_string);
let set_install_state = cli_args
.value_of("set-install-state")
.map(ShellInstallState::from_str)
.transpose()?;
Ok(Self {
install,
set_install_state,
print_shell_function,
})
}
}
|
