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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 df2c5faf73
commit f881f44d06
2 changed files with 101 additions and 116 deletions
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1
bin/core/imag-header/Cargo.toml
View file

@ -26,6 +26,7 @@ toml = "0.5.1"
toml-query = "0.9.2"
filters = "0.3.0"
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" }

216
bin/core/imag-header/src/lib.rs
View file

@ -34,10 +34,11 @@
extern crate clap;
#[macro_use] extern crate log;
#[macro_use] extern crate failure;
extern crate toml;
extern crate toml_query;
extern crate filters;
extern crate failure;
extern crate resiter;
extern crate libimagentryedit;
extern crate libimagerror;
@ -52,18 +53,17 @@ use std::string::ToString;
use clap::{App, ArgMatches};
use filters::filter::Filter;
use toml::Value;
use failure::{Fallible as Result, Error};
use failure::Error;
use failure::Fallible as Result;
use failure::err_msg;
use resiter::FilterMap;
use resiter::AndThen;
use libimagerror::exit::ExitCode;
use libimagerror::exit::ExitUnwrap;
use libimagerror::io::ToExitCode;
use libimagerror::iter::TraceIterator;
use libimagerror::trace::MapErrTrace;
use libimagrt::runtime::Runtime;
use libimagrt::application::ImagApplication;
use libimagstore::iter::get::StoreIdGetIteratorExtension;
use libimagstore::store::FileLockEntry;
use libimagstore::storeid::StoreIdIterator;
use libimagerror::iter::IterInnerOkOrElse;
use toml_query::read::TomlValueReadExt;
use toml_query::read::TomlValueReadTypeExt;
@ -85,22 +85,16 @@ impl ImagApplication for ImagHeader {
trace!("list_output_with_ids = {:?}", list_output_with_ids );
trace!("list_output_with_ids_fmt = {:?}", list_output_with_ids_fmt);
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();
let iter = StoreIdIterator::new(Box::new(sids.map(Ok)))
let iter = 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()
.filter_map(|x| x);
.map_inner_ok_or_else(|| err_msg("Did not find one entry"));
match rt.cli().subcommand() {
("read", Some(mtch)) => ::std::process::exit(read(&rt, mtch, iter)),
("read", Some(mtch)) => read(&rt, mtch, iter),
("has", Some(mtch)) => has(&rt, mtch, iter),
("hasnt", Some(mtch)) => hasnt(&rt, mtch, iter),
("int", Some(mtch)) => int(&rt, mtch, iter),
@ -109,16 +103,16 @@ impl ImagApplication for ImagHeader {
("bool", Some(mtch)) => boolean(&rt, mtch, iter),
(other, _mtchs) => {
debug!("Unknown command");
::std::process::exit({
rt.handle_unknown_subcommand("imag-header", other, rt.cli())
.map_err_trace_exit_unwrap()
.code()
.unwrap_or(1)
});
if rt.handle_unknown_subcommand("imag-header", other, rt.cli())
.map_err(Error::from)?
.success()
{
Ok(())
} else {
Err(format_err!("Subcommand failed"))
}
},
};
Ok(())
}
}
fn build_cli<'a>(app: App<'a, 'a>) -> App<'a, 'a> {
@ -138,21 +132,20 @@ impl ImagApplication for ImagHeader {
}
}
fn read<'a, 'e, I>(rt: &Runtime, mtch: &ArgMatches<'a>, iter: I) -> i32
where I: Iterator<Item = FileLockEntry<'e>>
fn read<'a, 'e, I>(rt: &Runtime, mtch: &ArgMatches<'a>, iter: I) -> Result<()>
where I: Iterator<Item = Result<FileLockEntry<'e>>>
{
debug!("Processing headers: reading value");
let header_path = get_header_path(mtch, "header-value-path");
let mut output = rt.stdout();
trace!("Got output: {:?}", output);
iter.fold(0, |accu, entry| {
iter.and_then_ok(|entry| {
trace!("Processing headers: working on {:?}", entry.get_location());
entry.get_header()
.read(header_path)
.map_err(Error::from)
.map_err_trace_exit_unwrap()
.map(|value| {
.read(header_path)?
.ok_or_else(|| format_err!("Value not present for entry {} at {}", entry.get_location(), header_path))
.and_then(|value| {
trace!("Processing headers: Got value {:?}", value);
let string_representation = match value {
@ -164,65 +157,56 @@ fn read<'a, 'e, I>(rt: &Runtime, mtch: &ArgMatches<'a>, iter: I) -> i32
};
if let Some(repr) = string_representation {
writeln!(output, "{}", repr)
writeln!(output, "{}", repr)?;
} else {
writeln!(output, "{}", value)
writeln!(output, "{}", value)?;
}
.to_exit_code()
.map(|_| accu)
.unwrap_or_else(ExitCode::code)
})
.unwrap_or_else(|| {
// if value not present and configured
error!("Value not present for entry {} at {}", entry.get_location(), header_path);
1
Ok(())
})
})
.collect::<Result<()>>()
}
fn has<'a, 'e, I>(rt: &Runtime, mtch: &ArgMatches<'a>, iter: I)
where I: Iterator<Item = FileLockEntry<'e>>
fn has<'a, 'e, I>(rt: &Runtime, mtch: &ArgMatches<'a>, iter: I) -> Result<()>
where I: Iterator<Item = Result<FileLockEntry<'e>>>
{
debug!("Processing headers: has value");
let header_path = get_header_path(mtch, "header-value-path");
let mut output = rt.stdout();
iter.for_each(|entry| {
iter.and_then_ok(|entry| {
trace!("Processing headers: working on {:?}", entry.get_location());
if entry.get_header()
.read(header_path)
.map_err(Error::from)
.map_err_trace_exit_unwrap()
.is_some()
{
rt.report_touched(entry.get_location()).unwrap_or_exit();
if !rt.output_is_pipe() {
writeln!(output, "{}", entry.get_location()).to_exit_code().unwrap_or_exit();
}
if let Some(_) = entry.get_header().read(header_path)? {
if !rt.output_is_pipe() {
writeln!(output, "{}", entry.get_location())?;
}
rt.report_touched(entry.get_location()).map_err(Error::from)
} else {
Ok(())
}
})
.collect::<Result<()>>()
}
fn hasnt<'a, 'e, I>(rt: &Runtime, mtch: &ArgMatches<'a>, iter: I)
where I: Iterator<Item = FileLockEntry<'e>>
fn hasnt<'a, 'e, I>(rt: &Runtime, mtch: &ArgMatches<'a>, iter: I) -> Result<()>
where I: Iterator<Item = Result<FileLockEntry<'e>>>
{
debug!("Processing headers: hasnt value");
let header_path = get_header_path(mtch, "header-value-path");
let mut output = rt.stdout();
iter.for_each(|entry| {
iter.and_then_ok(|entry| {
trace!("Processing headers: working on {:?}", entry.get_location());
if entry.get_header()
.read(header_path)
.map_err(Error::from)
.map_err_trace_exit_unwrap()
.is_none() {
rt.report_touched(entry.get_location()).unwrap_or_exit();
if !rt.output_is_pipe() {
writeln!(output, "{}", entry.get_location()).to_exit_code().unwrap_or_exit();
}
if let Some(_) = entry.get_header().read(header_path)? {
Ok(())
} else {
if !rt.output_is_pipe() {
writeln!(output, "{}", entry.get_location())?;
}
rt.report_touched(entry.get_location()).map_err(Error::from)
}
})
.collect()
}
macro_rules! implement_compare {
@ -238,8 +222,8 @@ macro_rules! implement_compare {
}}
}
fn int<'a, 'e, I>(rt: &Runtime, mtch: &ArgMatches<'a>, iter: I)
where I: Iterator<Item = FileLockEntry<'e>>
fn int<'a, 'e, I>(rt: &Runtime, mtch: &ArgMatches<'a>, iter: I) -> Result<()>
where I: Iterator<Item = Result<FileLockEntry<'e>>>
{
debug!("Processing headers: int value");
let header_path = get_header_path(mtch, "header-value-path");
@ -264,20 +248,20 @@ fn int<'a, 'e, I>(rt: &Runtime, mtch: &ArgMatches<'a>, iter: I)
implement_compare!(mtch, "header-int-gte", i64, |cmp| *i >= cmp)
});
iter.filter(|entry| if let Some(hdr) = entry.get_header()
.read_int(header_path)
.map_err(Error::from)
.map_err_trace_exit_unwrap()
{
filter.filter(&hdr)
iter.and_then_ok(|entry| {
if let Some(hdr) = entry.get_header().read_int(header_path)? {
Ok((filter.filter(&hdr), entry))
} else {
false
})
.for_each(|entry| rt.report_touched(entry.get_location()).unwrap_or_exit())
Ok((false, entry))
}
})
.filter_map_ok(|(b, e)| if b { Some(e) } else { None })
.and_then_ok(|entry| rt.report_touched(entry.get_location()).map_err(Error::from))
.collect()
}
fn float<'a, 'e, I>(rt: &Runtime, mtch: &ArgMatches<'a>, iter: I)
where I: Iterator<Item = FileLockEntry<'e>>
fn float<'a, 'e, I>(rt: &Runtime, mtch: &ArgMatches<'a>, iter: I) -> Result<()>
where I: Iterator<Item = Result<FileLockEntry<'e>>>
{
debug!("Processing headers: float value");
let header_path = get_header_path(mtch, "header-value-path");
@ -302,20 +286,20 @@ fn float<'a, 'e, I>(rt: &Runtime, mtch: &ArgMatches<'a>, iter: I)
implement_compare!(mtch, "header-float-gte", f64, |cmp| *i >= cmp)
});
iter.filter(|entry| if let Some(hdr) = entry.get_header()
.read_float(header_path)
.map_err(Error::from)
.map_err_trace_exit_unwrap()
{
filter.filter(&hdr)
iter.and_then_ok(|entry| {
if let Some(hdr) = entry.get_header().read_float(header_path)? {
Ok((filter.filter(&hdr), entry))
} else {
false
})
.for_each(|entry| rt.report_touched(entry.get_location()).unwrap_or_exit())
Ok((false, entry))
}
})
.filter_map_ok(|(b, e)| if b { Some(e) } else { None })
.and_then_ok(|entry| rt.report_touched(entry.get_location()).map_err(Error::from))
.collect()
}
fn string<'a, 'e, I>(rt: &Runtime, mtch: &ArgMatches<'a>, iter: I)
where I: Iterator<Item = FileLockEntry<'e>>
fn string<'a, 'e, I>(rt: &Runtime, mtch: &ArgMatches<'a>, iter: I) -> Result<()>
where I: Iterator<Item = Result<FileLockEntry<'e>>>
{
debug!("Processing headers: string value");
let header_path = get_header_path(mtch, "header-value-path");
@ -328,20 +312,20 @@ fn string<'a, 'e, I>(rt: &Runtime, mtch: &ArgMatches<'a>, iter: I)
implement_compare!(mtch, "header-string-neq", String, |cmp| *i != cmp)
});
iter.filter(|entry| if let Some(hdr) = entry.get_header()
.read_string(header_path)
.map_err(Error::from)
.map_err_trace_exit_unwrap()
{
filter.filter(&hdr)
iter.and_then_ok(|entry| {
if let Some(hdr) = entry.get_header().read_string(header_path)? {
Ok((filter.filter(&hdr), entry))
} else {
false
})
.for_each(|entry| rt.report_touched(entry.get_location()).unwrap_or_exit())
Ok((false, entry))
}
})
.filter_map_ok(|(b, e)| if b { Some(e) } else { None })
.and_then_ok(|entry| rt.report_touched(entry.get_location()).map_err(Error::from))
.collect()
}
fn boolean<'a, 'e, I>(rt: &Runtime, mtch: &ArgMatches<'a>, iter: I)
where I: Iterator<Item = FileLockEntry<'e>>
fn boolean<'a, 'e, I>(rt: &Runtime, mtch: &ArgMatches<'a>, iter: I) -> Result<()>
where I: Iterator<Item = Result<FileLockEntry<'e>>>
{
debug!("Processing headers: bool value");
let header_path = get_header_path(mtch, "header-value-path");
@ -350,16 +334,16 @@ fn boolean<'a, 'e, I>(rt: &Runtime, mtch: &ArgMatches<'a>, iter: I)
.and(|i: &bool| -> bool { *i })
.and(|i: &bool| -> bool { *i });
iter.filter(|entry| if let Some(hdr) = entry.get_header()
.read_bool(header_path)
.map_err(Error::from)
.map_err_trace_exit_unwrap()
{
filter.filter(&hdr)
iter.and_then_ok(|entry| {
if let Some(hdr) = entry.get_header().read_bool(header_path)? {
Ok((filter.filter(&hdr), entry))
} else {
false
})
.for_each(|entry| rt.report_touched(entry.get_location()).unwrap_or_exit())
Ok((false, entry))
}
})
.filter_map_ok(|(b, e)| if b { Some(e) } else { None })
.and_then_ok(|entry| rt.report_touched(entry.get_location()).map_err(Error::from))
.collect()
}