imag/libimagentrylist/src/cli.rs

82 lines
2.2 KiB
Rust

use clap::{Arg, ArgMatches, App, SubCommand};
use libimagstore::store::FileLockEntry;
use result::Result;
use listers::line::LineLister;
use listers::path::PathLister;
use lister::Lister;
use error::{ListError, ListErrorKind};
pub fn build_list_cli_component<'a, 'b>() -> App<'a, 'b> {
SubCommand::with_name(list_subcommand_name())
.author("Matthias Beyer <mail@beyermatthias.de>")
.version("0.1")
.about("List entries")
.arg(Arg::with_name(list_backend_line())
.short("l")
.long("line")
.takes_value(false)
.required(false)
.multiple(false)
.help("Use backend: Line"))
.arg(Arg::with_name(list_backend_path())
.short("p")
.long("path")
.takes_value(false)
.required(false)
.multiple(false)
.help("Use backend: Path"))
.arg(Arg::with_name(list_backend_path_absolute())
.short("P")
.long("path-absolute")
.takes_value(false)
.required(false)
.multiple(false)
.help("Use backend: Path (absolute)"))
}
pub fn list_subcommand_name() -> &'static str {
"list"
}
pub fn list_backend_line() -> &'static str {
"line"
}
pub fn list_backend_path() -> &'static str {
"path"
}
pub fn list_backend_path_absolute() -> &'static str {
"path-absolute"
}
// TODO: Add Registry for listers where a HashMap name->lister is in and where we can fetch the
// lister from.
pub fn list_entries_with_lister<'a, I>(m: &ArgMatches, entries: I) -> Result<()>
where I: Iterator<Item = FileLockEntry<'a>>
{
if let Some(matches) = m.subcommand_matches(list_subcommand_name()) {
if matches.is_present(list_backend_line()) {
return LineLister::new("<unknown>").list(entries)
};
if matches.is_present(list_backend_path()) {
return PathLister::new(false).list(entries)
}
if matches.is_present(list_backend_path_absolute()) {
return PathLister::new(true).list(entries)
}
Ok(())
} else {
Err(ListError::new(ListErrorKind::CLIError, None))
}
}