- Job control is now complete for non-redox unix systems.
- The fg command now works

We need to do a lot of refactoring now to clean this up though.

- The `SIGHUP` command is now being handled.
- The `disown` builtin can specify which jobs should ignore `SIGHUP`.
- The `disown` command will also prevent jobs from being terminated
  when the shell exits.
- The `suspend` command will send a `SIGSTOP` to the shell to stop it.

Almost everything is working now. The target/debug/ion command doesn't work yet though.

Hunter Goldstein authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* s/redox_syscall/syscall

* redox compat changes

* Missed a few

* Missed sigtstp, use redox syscall result

* Add third param to redox method

clippix authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* Store configurations in the correct XDG App Dir

Read the init file from the XDG config app dir using the app_dirs crate,
and set the HISTORY_FILE to be located in the XDG data app dir.
The init file is now named initrc instead of .ionrc.

* Enable history file by default

Set HISTORY_FILE_ENABLED to "1" so that ion writes history by default.

This change will modify the way that job statuses are monitored.
Rather than using the wait() method on a child, this will use
the lower level waitpid() method from the nix crate, enabling
the ability to detect and record changes to the child process
automatically.

This also implements a change that will fork the shell when a
command is executed that needs to be run in the background.
However, these commands still don't work at the moment due to a
parsing issue.

unrelentingtech authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* Use signal constants from libc

Instead of hardcoding numbers, which causes portability issues.
In particular, SIGTSTP is not 20 on FreeBSD.

* Remove pid offset

With this relatively large change, Ion now supports handling SIGTSTP signals. There's also three new job control builtins: wait, jobs, and bg.

Jason Bowen authored 7 years ago and Michael Aaron Murphy committed 7 years ago

reference the RFC/GitHub issue that is the reason behind the version
requirement.

I also updated the error printed if the minimum version is not met to
reflect this version.

Hunter Goldstein authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* [WIP] Add a rudimentary match statement to the language

* Parsing a match construct now correctly resumes on new line

Before, parsing a match construct would depend on all parts of the match
statement being in one piece, it can now accept it over multiple
invocations of `on_command`

* Match statement now forwards all conditions

* Most errors are copy / paste errors

* Finish comment, remove useless continue

* case values are now unquoted string literals

* Added example for match

* case expressions are now arbitrary commands

The values in case branches can now be arbitrary commands that work off
set intersection (for now). For example, the case:
```
case @(seq 0 10)
```
would match any number from 0 to 10. Additionally, alternation can be
done through an array, like so:
```
match $filetype
  case ["image/jpeg" "image/png"]
  ...
  end
end
```

* Remove XXX referencing shorthand

Hunter Goldstein authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* Additional fix for #352

Due to the condition that the parent directory cannot be the current
directory, simple commands like `rm file_in_this_dir.txt` were broken.
This should fix said case.

* Re-add variable logic

* Refactor `complete_as_file` to be more readable and expand logic

Hunter Goldstein authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* Fixed completing executables

The problem was that for any filename "foo", `readln` would check to see
if either it exists, or if the parent exists. Which means if you're
trying to complete _any_ executable, it thinks its a file because the
"parent" is the current directory.

* Add comment

Hunter Goldstein authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* Empty quoted string now results in empty Normal WorkToken

* Adjusted double-quote logic to ignore empty strs on token edge

Before if we had input like `"$FOO"`, the token iterator would generate
a sequence like:
```
[Normal(""), Variable(FOO), Normal("")]
```
which doesn't really make much sense. What this does is allows for
"empty string literals" such as `""` while ensuring that empty strings
that are generated through token edges are ignored.

* Remove silly filter_empty fn

In order to create an array with the let command, arrays must be wrapped within [ and ] characters, like so:

let array = [ 1 2 3 ]
let copy_of_array = [  ]

Otherwise, if array arguments are passed to let but not wrapped within [ and ] characters, then the array arguments will be joined together as a string, with spaces between each element.

Hunter Goldstein authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* Shell::readln now completes to a filename if the last word is a file

- This allows situations like "./foo" to complete to a local directory
"./foobar"
- I'm not sure how efficient this is compared to the old competion, I'm
guessing not very.

* Have completion be relative to the current directory

* Remove random newline

Hunter Goldstein authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* Refactored `array_expand` to be more concise / efficient

- `array_expand` now serves as the entry for operating on a set of
elements and returning an array
- Fixed a bug where negative indicies were using the wrong length, the
pre-expansion length
- Added a regression test for the above

* Factor out common subexpression

Hunter Goldstein authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* Add grapheme, bytes, and char string -> array methods, with refactor

- Adds in the `@graphemes` `@chars`, and `@bytes` functions, which
create arrays of string variables corresponding to graphemes, unicode
scalars, and bytes respectively
- Add in start of select refactor

* Add tests for new string methods

Hunter Goldstein authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* Remove extra read increment in glob branch

* Add test for globbing

Hunter Goldstein authored 7 years ago and Michael Aaron Murphy committed 7 years ago

* Make calc functions public to crate

* Add arithmetic expressions to shell grammar

* Fix failing test

* Add test in syntax_errors for calc

* Add test for expanding arithmetic subexpression

* calc -> arith_expression

* Add parser::words test for arithmetic

* indent if branch