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368 commits

Author SHA1 Message Date
AnotherTest
9523bcbfe1 Shell: Fix completing barewords with escapes 
e.g. completing `foo\ bar` now works as expected.
 2021-01-10 00:03:52 +01:00
AnotherTest
335221d830 Shell: Run function declarations in the current process 
Fixes #4817
 2021-01-06 15:40:45 +01:00
AnotherTest
4adfdb98aa Shell: Remove debug log about child process going away 
This is still an issue, but its existence isn't helping anyone, so just
remove it.
 2021-01-04 19:13:18 +01:00
AnotherTest
aaa83e95c9 Shell: Implement a 'source' builtin 2021-01-03 17:13:00 +01:00
AnotherTest
a698af88fc Shell: Show a snippet of what caused the error (if possible) 
Now we can have nice errors too:
```
Shell: Glob did not match anything!
  0| echo ?x
~~~~~~~~~~^^
  1|

```
 2021-01-03 17:13:00 +01:00
AnotherTest
3d51bcaa4e Shell: Give commands and globs a source position 
This will help us have nicer error reporting.
 2021-01-03 17:13:00 +01:00
AnotherTest
cdebdaea2d Shell: Move AST::create() into the header and use it 2021-01-03 17:13:00 +01:00
Emanuele Torre
ef782c805f TextEditor+Meta+Ports+Shell: Remove blank lines at the end of some files 2021-01-03 17:12:50 +01:00
AnotherTest
2caf4e66ea Shell: Stop running the backgrounding test 
This test is breaking the build all the time, let's just turn it off for
now. we can enable it again once we know it won't fail.
 2021-01-02 21:02:15 +01:00
asynts
7e62ffbc6e AK+Format: Remove TypeErasedFormatParams& from format function. 2020-12-30 20:33:53 +01:00
William Marlow
96cd04f2ba Shell: Implement a very basic exec builtin 
Other shells also support a number of other options with exec and
some have special behaviour when calling exec with no arguments except
redirections.

This PR only supports the basic case of replacing the Shell process
(or LibShell host process) with the provided command.
 2020-12-30 02:13:53 +01:00
asynts
50d24e4f98 AK: Make binary_search signature more generic. 2020-12-30 02:13:30 +01:00
AnotherTest
66b26fc1c2 Shell: Fix wrong step value for brace ranges 
This fixes numeric ranges like {1..10}.
 2020-12-29 16:55:43 +01:00
AnotherTest
5e5eb615ec Shell: Add runtime errors and implement break/continue 
Such errors are raised when SyntaxError nodes are executed, and are also
used for internal control flow.
The 'break' and 'continue' commands are currently only allowed inside
for loops, and outside function bodies.

This also adds a 'loop' keyword for infinite loops.
 2020-12-29 16:55:43 +01:00
AnotherTest
9bd81f34a5 Shell: Make for/match/functions put their variables only in the new scope 
Otherwise, a function would, for example, overwrite its parent scope:
```sh
foo(x) { }
x=1
foo 2 # would make x=2 otherwise
```
 2020-12-29 16:55:43 +01:00
AnotherTest
97c5a78d27 Shell: Add a 'glob' builtin 
This builtin takes a bunch of strings, resolves them as globs (in the
current directory) and prints out the matching entries.
Its main use is to allow dynamic glob resolution:
```sh
glob "$whatever/*"
```
 2020-12-29 16:55:43 +01:00
Linus Groh
3d7b8de64f Shell: Don't run commands with failing redirections 
Fixes #3423.
 2020-12-16 23:26:19 +01:00
AnotherTest
4668dfa7c7 Shell: Make Subshell actually create a subshell 
Previously, a "subshell" would just be executed in the parent shell.
 2020-12-15 20:58:32 +01:00
AnotherTest
a2879f53c8 Shell: Restore the terminal PGID before printing out job status on exit 
This fixes the assert tripping when interrupting a foreground job.
Also make `bg` mark the job as 'should announce exit'.
 2020-12-10 16:20:39 +01:00
AnotherTest
17e1e1f114 Shell: Actually make shebangs work 
Also check for executable permissions before actually trying to run, and
print a helpful message if not executable.
Fixes #4358
 2020-12-08 23:34:38 +01:00
AnotherTest
0141f7e7fd Shell: Avoid recreating the event loop before exec() 
This stops the local socket creation spam.
 2020-12-08 23:34:38 +01:00
AnotherTest
cd8268e6fb Shell: Put background jobs into new process groups too 
Fixes #4345.
This was done in 54b453b in the name of "fixing event loop processing in
subshells", but I do not see how a new PGID is supposed to affect the event
loop.
This seems to have been done by mistake, let's see if any tests fail
because of this.
 2020-12-08 23:34:38 +01:00
AnotherTest
59b46a1f51 Shell: Show termination signal if job did not exit cleanly 2020-12-08 23:34:38 +01:00
AnotherTest
48a1f7e55c Shell: Silence TCSETPGRP errors when not interactive 2020-12-08 23:34:38 +01:00
AnotherTest
57728ef29f Shell: Replace all dbg()'s with dbgln() 2020-12-08 23:34:38 +01:00
AnotherTest
5325d6871d Shell: Make <return> go to a new line when the command is incomplete 
"incomplete" meaning that it has a syntax error that can be recovered
from by continuing the input.
 2020-12-08 23:34:38 +01:00
AnotherTest
62bd1adb06 Shell: Replace one more user-controlled assert with a syntax error 
test-case: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28114&q=label%3AProj-serenity
 2020-12-03 10:51:56 +01:00
AnotherTest
9d9347cd5a Shell: Fix bad cast to BarewordLiteral 
As found by oss-fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28109&q=label%3AProj-serenity
 2020-12-03 10:51:56 +01:00
AnotherTest
50b7122798 Shell: Error out when an expression is nested too deep 
That can happen with too many nested parenthesis, for instance.
This commit sets the maximum allowed limit to 2048 (seems relatively
safe for normal code).
Found by oss-fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28105&q=label%3AProj-serenity
 2020-11-30 17:45:15 +01:00
AnotherTest
e4bd5a5d69 Shell: Fix some at_end() bugs and use syntax errors instead of asserting 
...in cases where the assert can be directly caused by user input.
 2020-11-29 16:22:44 +01:00
Lenny Maiorani
0cb16ffe08 Shell: Remove unused private member and includes 
Problem:
- Clang reports unused private member warning in the `Shell::Formatter`.
- Vector is not used in the `Shell::Formatter`.

Solution:
- Remove unused private member variable.
- Remove unused includes.
 2020-11-17 09:48:02 +01:00
AnotherTest
1aed61964a Shell: Do not leak the value of ARGV in nested function calls 2020-11-01 18:45:05 +01:00
AnotherTest
e87e580eb3 Shell: Search for variables in the last frame first 
Otherwise, we'll end up overwriting another frame's variables if the
names match up.
 2020-11-01 18:45:05 +01:00
AnotherTest
bedad383b5 Shell: Store LocalFrames as NonnullOwnPtr<LocalFrame> instead 
As Vector<T> will relocate objects to resize, we cannot assume that the
address of a specific LocalFrame will stay constant, or that the
reference will not be dangling to begin with.
Fixes an assertion that fires when a frame push causes the Vector to
reallocate.
 2020-11-01 18:45:05 +01:00
AnotherTest
1a4ac3531f Shell: Allow parts of globs to be named in match expressions 
This patchset allows a match expression to have a list of names for its
glob parts, which are assigned to the matched values in the body of the
match.
For example,
```sh
stuff=foobarblahblah/target_{1..30}
for $stuff {
    match $it {
        */* as (dir sub) {
            echo "doing things with $sub in $dir"
            make -C $dir $sub # or whatever...
        }
    }
}
```

With this, match expressions are now significantly more powerful!
 2020-10-29 11:53:01 +01:00
AnotherTest
2d6d1ca67f Shell: Add some basic tests for backgrounding 2020-10-29 11:53:01 +01:00
AnotherTest
6e2a383f25 Shell: Wait for the rest of the members of a pipeline when one exits 
Assuming we were blocking on one to begin with.
 2020-10-29 11:53:01 +01:00
AnotherTest
c92865bd05 Shell: Use kill_job() to kill jobs 2020-10-29 11:53:01 +01:00
AnotherTest
384e872ff9 Shell: Add redirections to the formatted command string 2020-10-29 11:53:01 +01:00
AnotherTest
a46318d414 Shell: Do not bail early when printing jobs if waitpid() fails 
This fixes running `jobs` in a child process.
Also makes sure that stdout is flushed when writing jobs out.
 2020-10-29 11:53:01 +01:00
AnotherTest
f4b7a688b1 Shell: Rename {source,dest}_fd to {old,new}_fd 
This makes `Rewiring' much more understandable, and un-confuses the uses
of `dup2()'.
Also fixes `dup2()' bugs.
 2020-10-29 11:53:01 +01:00
AnotherTest
0bc758d34a Shell: Run builtins that cannot be run in the main process in a new child 
e.g. `$(jobs | wc -l)` would blow up horribly otherwise.
(it still does)
 2020-10-29 11:53:01 +01:00
AnotherTest
a8c18f9fd2 Shell: Drop all the jobs after killing them in stop_all_jobs() 2020-10-29 11:53:01 +01:00
AnotherTest
2610477836 Shell: Only prompt the user for a second 'exit' when in interactive mode 2020-10-29 11:53:01 +01:00
AnotherTest
71bb62d03c Shell: Add the `wait' builtin 
This builtin...waits...for the jobs it's given (or all the existing
jobs).
 2020-10-29 11:53:01 +01:00
AnotherTest
76a2c6e44d Shell: Fix cd' history (and cdh') 
Previously, `cd` would push relative paths (and possibly nonexistent
ones too) into its history, so `cdh' would fail everywhere else.
 2020-10-26 14:28:38 +01:00
AnotherTest
6d7b01a3cf Shell: Use kill() in fg/bg if killpg() fails 
A job might not have its own pgid if it's created through run_tail().
 2020-10-26 14:28:38 +01:00
AnotherTest
5a4673d468 Shell: Ensure that jobs going through run_tail() retain should_wait 
This allows putting logic in the background as well.
 2020-10-26 14:28:38 +01:00
AnotherTest
9ad858bcbf Shell: Make the ENSURE_WAITID_ONCE requirements a bit less strict 
waitid() *may* be called many times if a job does not exit, so only
assert this fact when the job has in fact exited.
Also allows Background nodes to contain non-execute nodes.
 2020-10-26 14:28:38 +01:00
AnotherTest
8de70e8ce7 Shell: Implement AK::Formatter::format() for AST::Command 
...and use that to display jobs.
 2020-10-26 14:28:38 +01:00