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Error handling

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This commit is contained in:
Sam Hedin 2020-06-17 00:02:21 +02:00
parent fb1839971a
commit 688df20a30
5 changed files with 43 additions and 45 deletions
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4
crates/nu-cli/src/cli.rs
View File

@ -237,7 +237,7 @@ pub fn create_default_context(
syncer.load_environment();
let mut context = Context::basic()?;
syncer.sync_env_vars(&mut context);
syncer.sync_env_vars(&mut context)?;
syncer.sync_path_vars(&mut context);
{
@ -668,7 +668,7 @@ pub async fn cli(
// TODO: make sure config is cached so we don't path this load every call
// FIXME: we probably want to be a bit more graceful if we can't set the environment
syncer.reload();
syncer.sync_env_vars(&mut context);
syncer.sync_env_vars(&mut context)?;
syncer.sync_path_vars(&mut context);
match line {

1
crates/nu-cli/src/env/TODO.org vendored
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@ -20,3 +20,4 @@ returning =None=, which completely skips running the code for dealing with direc
- This holds even if the old value was set by a .nu in a parent directory. The overwritten value is restored when you leave the directory.
** Security
https://github.com/nushell/nushell/issues/1965
** Nice errors

57
crates/nu-cli/src/env/directory_specific_environment.rs vendored
View File

@ -1,4 +1,5 @@
use indexmap::{IndexMap, IndexSet};
use nu_errors::ShellError;
use nu_protocol::{Primitive, UntaggedValue, Value};
use std::io::Write;
use std::{
@ -8,7 +9,6 @@ use std::{
io::{Error, ErrorKind, Result},
path::PathBuf,
};
use nu_errors::ShellError;
type EnvKey = String;
type EnvVal = OsString;
@ -83,22 +83,12 @@ impl DirectorySpecificEnvironment {
Ok(keyvals_to_restore)
}
pub fn env_vars_to_add(&mut self) -> std::result::Result<IndexMap<EnvKey, EnvVal>, ShellError> {
pub fn env_vars_to_add(&mut self) -> std::io::Result<IndexMap<EnvKey, EnvVal>> {
let current_dir = std::env::current_dir()?;
let mut working_dir = Some(current_dir.as_path());
let mut vars_to_add = IndexMap::new();
// let mut file = OpenOptions::new()
// .write(true)
// .append(true)
// .create(true)
// .open("toadd.txt")
// .unwrap(
// );
// write!(&mut file, "1: {:?}\n", vars_to_add).unwrap();
//WE CRASHING SOMEWHERE HERE
// //WE CRASHING SOMEWHERE HERE
//Start in the current directory, then traverse towards the root with working_dir to see if we are in a subdirectory of a valid directory.
while let Some(wdir) = working_dir {
@ -108,42 +98,49 @@ impl DirectorySpecificEnvironment {
toml_doc
.get("env")
.ok_or_else(|| Err(ShellError::untagged_runtime_error("env section missing")))?
.ok_or_else(|| Error::new(ErrorKind::InvalidData, "env section missing"))?
.as_table()
.ok_or_else(|| Err(ShellError::untagged_runtime_error("env section malformed")))?
.ok_or_else(|| Error::new(ErrorKind::InvalidData, "env section malformed"))?
.iter()
.for_each(|(directory_env_key, directory_env_val)| {
if !vars_to_add.contains_key(directory_env_key) {
let directory_env_val: EnvVal =
directory_env_val.as_str().unwrap().into();
.for_each(|(dir_env_key, dir_env_val)| {
let dir_env_val: EnvVal = dir_env_val.as_str().unwrap().into();
//If we are about to overwrite any environment variables, we save them first so they can be restored later.
if let Some(existing_val) = std::env::var_os(directory_env_key) {
if existing_val != directory_env_val {
self.overwritten_env_vars
.entry(wdir.to_path_buf())
.or_insert(IndexMap::new())
.insert(directory_env_key.clone(), existing_val);
if let Some(existing_val) = std::env::var_os(dir_env_key) {
// if existing_val != dir_env_val {
// self.overwritten_env_vars
// .entry(wdir.to_path_buf())
// .or_insert(IndexMap::new())
// .insert(dir_env_key.clone(), existing_val);
vars_to_add.insert(directory_env_key.clone(), directory_env_val);
}
// vars_to_add.insert(dir_env_key.clone(), dir_env_val);
// }
} else {
//Otherwise, we just track that we added it here
self.added_env_vars
.entry(wdir.to_path_buf())
.or_insert(IndexSet::new())
.insert(directory_env_key.clone());
.insert(dir_env_key.clone());
vars_to_add.insert(directory_env_key.clone(), directory_env_val);
}
vars_to_add.insert(dir_env_key.clone(), dir_env_val);
}
});
}
working_dir = working_dir //Keep going up in the directory structure with .parent()
.expect("This should not be None because of the while condition")
.parent();
}
let mut file = OpenOptions::new()
.write(true)
.append(true)
.create(true)
.open("toadd.txt")
.unwrap();
write!(&mut file, "adding: {:?}\n", vars_to_add).unwrap();
Ok(vars_to_add)
}

7
crates/nu-cli/src/env/environment.rs vendored
View File

@ -5,6 +5,7 @@ use indexmap::{indexmap, IndexSet};
use nu_protocol::{UntaggedValue, Value};
use std::ffi::OsString;
use std::{fs::OpenOptions, fmt::Debug};
use nu_errors::ShellError;
pub trait Env: Debug + Send {
fn env(&self) -> Option<Value>;
@ -71,10 +72,10 @@ impl Environment {
// self.add_env(&k, &v.to_string_lossy(), true);
// });
// self.direnv.env_vars_to_add()?.iter().for_each(|(k, v)| {
self.direnv.env_vars_to_add()?.iter().for_each(|(k, v)| {
// std::env::set_var(k, v);
// self.add_env(&k, &v.to_string_lossy(), true);
// });
self.add_env(&k, &v.to_string_lossy(), true);
});
Ok(())
}

3
crates/nu-cli/src/env/environment_syncer.rs vendored
View File

@ -45,6 +45,7 @@ impl EnvironmentSyncer {
pub fn sync_env_vars(&mut self, ctx: &mut Context) -> Result<(), ShellError> {
let mut environment = self.env.lock();
environment.maintain_directory_environment().ok();
if environment.env().is_some() {
for (name, value) in ctx.with_host(|host| host.vars()) {
if name != "path" && name != "PATH" {
@ -52,8 +53,6 @@ impl EnvironmentSyncer {
// that aren't loaded from config.
environment.add_env(&name, &value, false);
environment.maintain_directory_environment()?;
// clear the env var from the session
// we are about to replace them
ctx.with_host(|host| host.env_rm(std::ffi::OsString::from(name)));