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Remove calls to exit() and replace them with error propagation up to main()

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Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
This commit is contained in:
Matthias Beyer 2019-10-19 08:54:57 +02:00
parent b36454ac38
commit 647ca2fea6
2 changed files with 55 additions and 96 deletions
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1
bin/core/imag-category/Cargo.toml
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@ -24,6 +24,7 @@ log = "0.4.6"
toml = "0.5.1"
toml-query = "0.9.2"
failure = "0.1.5"
resiter = "0.3.0"
libimagstore = { version = "0.10.0", path = "../../../lib/core/libimagstore" }
libimagrt = { version = "0.10.0", path = "../../../lib/core/libimagrt" }

150
bin/core/imag-category/src/lib.rs
View file

@ -39,6 +39,7 @@ extern crate clap;
extern crate log;
#[macro_use]
extern crate failure;
extern crate resiter;
extern crate libimagentrycategory;
extern crate libimagerror;
@ -50,19 +51,20 @@ use failure::Fallible as Result;
use clap::App;
use libimagerror::trace::MapErrTrace;
use libimagerror::exit::ExitUnwrap;
use libimagerror::io::ToExitCode;
use libimagrt::runtime::Runtime;
use libimagrt::application::ImagApplication;
use libimagerror::iter::IterInnerOkOrElse;
mod ui;
use std::io::Write;
use failure::err_msg;
use failure::Error;
use resiter::AndThen;
use libimagentrycategory::store::CategoryStore;
use libimagstore::storeid::StoreIdIterator;
use libimagstore::iter::get::StoreIdGetIteratorExtension;
use libimagerror::iter::TraceIterator;
use libimagentrycategory::entry::EntryCategory;
use libimagentrycategory::category::Category;
@ -73,25 +75,22 @@ use libimagentrycategory::category::Category;
pub enum ImagCategory {}
impl ImagApplication for ImagCategory {
fn run(rt: Runtime) -> Result<()> {
if let Some(name) = rt.cli().subcommand_name() {
match name {
"set" => set(&rt),
"get" => get(&rt),
"list-category" => list_category(&rt),
"create-category" => create_category(&rt),
"delete-category" => delete_category(&rt),
"list-categories" => list_categories(&rt),
other => {
debug!("Unknown command");
let _ = rt.handle_unknown_subcommand("imag-category", other, rt.cli())
.map_err_trace_exit_unwrap()
.code()
.map(::std::process::exit);
},
}
match rt.cli().subcommand_name().ok_or_else(|| err_msg("No subcommand called"))? {
"set" => set(&rt),
"get" => get(&rt),
"list-category" => list_category(&rt),
"create-category" => create_category(&rt),
"delete-category" => delete_category(&rt),
"list-categories" => list_categories(&rt),
other => {
debug!("Unknown command");
if rt.handle_unknown_subcommand("imag-category", other, rt.cli())?.success() {
Ok(())
} else {
Err(err_msg("Failed to handle unknown subcommand"))
}
},
}
Ok(())
}
fn build_cli<'a>(app: App<'a, 'a>) -> App<'a, 'a> {
@ -112,125 +111,84 @@ impl ImagApplication for ImagCategory {
}
fn set(rt: &Runtime) {
fn set(rt: &Runtime) -> Result<()> {
let scmd = rt.cli().subcommand_matches("set").unwrap(); // safed by main()
let name = scmd.value_of("set-name").map(String::from).unwrap(); // safed by clap
let sids = rt
.ids::<crate::ui::PathProvider>()
.map_err_trace_exit_unwrap()
.unwrap_or_else(|| {
error!("No ids supplied");
::std::process::exit(1);
})
.into_iter();
StoreIdIterator::new(Box::new(sids.map(Ok)))
rt.ids::<crate::ui::PathProvider>()?
.ok_or_else(|| err_msg("No ids supplied"))?
.into_iter()
.map(Ok)
.into_get_iter(rt.store())
.trace_unwrap_exit()
.map(|o| o.unwrap_or_else(|| {
error!("Did not find one entry");
::std::process::exit(1)
}))
.for_each(|mut entry| {
entry
.set_category_checked(rt.store(), &name)
.map_err_trace_exit_unwrap();
})
.map_inner_ok_or_else(|| err_msg("Did not find one entry"))
.and_then_ok(|mut e| e.set_category_checked(rt.store(), &name))
.collect()
}
fn get(rt: &Runtime) {
fn get(rt: &Runtime) -> Result<()> {
let out = rt.stdout();
let mut outlock = out.lock();
let sids = rt
.ids::<crate::ui::PathProvider>()
.map_err_trace_exit_unwrap()
.unwrap_or_else(|| {
error!("No ids supplied");
::std::process::exit(1);
})
.into_iter();
StoreIdIterator::new(Box::new(sids.map(Ok)))
rt.ids::<crate::ui::PathProvider>()?
.ok_or_else(|| err_msg("No ids supplied"))?
.into_iter()
.map(Ok)
.into_get_iter(rt.store())
.trace_unwrap_exit()
.map(|o| o.unwrap_or_else(|| {
error!("Did not find one entry");
::std::process::exit(1)
}))
.map(|entry| entry.get_category().map_err_trace_exit_unwrap())
.for_each(|name| {
writeln!(outlock, "{}", name).to_exit_code().unwrap_or_exit();
})
.map(|el| el.and_then(|o| o.ok_or_else(|| err_msg("Did not find one entry"))))
.map(|entry| entry.and_then(|e| e.get_category()))
.map(|name| name.and_then(|n| writeln!(outlock, "{}", n).map_err(Error::from)))
.collect()
}
fn list_category(rt: &Runtime) {
fn list_category(rt: &Runtime) -> Result<()> {
let scmd = rt.cli().subcommand_matches("list-category").unwrap(); // safed by main()
let name = scmd.value_of("list-category-name").map(String::from).unwrap(); // safed by clap
if let Some(category) = rt.store().get_category_by_name(&name).map_err_trace_exit_unwrap() {
if let Some(category) = rt.store().get_category_by_name(&name)? {
let out = rt.stdout();
let mut outlock = out.lock();
category
.get_entries(rt.store())
.map_err_trace_exit_unwrap()
.for_each(|entry| {
writeln!(outlock, "{}", entry.map_err_trace_exit_unwrap().get_location())
.to_exit_code()
.unwrap_or_exit();
})
.map(|entry| writeln!(outlock, "{}", entry?.get_location()).map_err(Error::from))
.collect()
} else {
info!("No category named '{}'", name);
::std::process::exit(1)
Err(format_err!("No category named '{}'", name))
}
}
fn create_category(rt: &Runtime) {
fn create_category(rt: &Runtime) -> Result<()> {
let scmd = rt.cli().subcommand_matches("create-category").unwrap(); // safed by main()
let name = scmd.value_of("create-category-name").map(String::from).unwrap(); // safed by clap
let _ = rt
.store()
.create_category(&name)
.map_err_trace_exit_unwrap();
rt.store().create_category(&name).map(|_| ())
}
fn delete_category(rt: &Runtime) {
fn delete_category(rt: &Runtime) -> Result<()> {
use libimaginteraction::ask::ask_bool;
let scmd = rt.cli().subcommand_matches("delete-category").unwrap(); // safed by main()
let name = scmd.value_of("delete-category-name").map(String::from).unwrap(); // safed by clap
let ques = format!("Do you really want to delete category '{}' and remove links to all categorized enties?", name);
let mut input = rt.stdin().unwrap_or_else(|| {
error!("No input stream. Cannot ask for permission");
::std::process::exit(1)
});
let mut input = rt.stdin().ok_or_else(|| err_msg("No input stream. Cannot ask for permission"))?;
let mut output = rt.stdout();
let answer = ask_bool(&ques, Some(false), &mut input, &mut output).map_err_trace_exit_unwrap();
let answer = ask_bool(&ques, Some(false), &mut input, &mut output)?;
if answer {
info!("Deleting category '{}'", name);
rt
.store()
.delete_category(&name)
.map_err_trace_exit_unwrap();
rt.store().delete_category(&name).map(|_| ())
} else {
info!("Not doing anything");
Ok(())
}
}
fn list_categories(rt: &Runtime) {
fn list_categories(rt: &Runtime) -> Result<()> {
let out = rt.stdout();
let mut outlock = out.lock();
rt.store()
.all_category_names()
.map_err_trace_exit_unwrap()
.for_each(|name| {
writeln!(outlock, "{}", name.map_err_trace_exit_unwrap())
.to_exit_code()
.unwrap_or_exit();
})
.all_category_names()?
.map(|name| name.and_then(|n| writeln!(outlock, "{}", n).map_err(Error::from)))
.collect()
}