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2020-08-21LibLine: Handle interrupts/window size changes internallyAnotherTest
2020-08-21LibLine: Handle Ctrl-C and Ctrl-D in a way similar to other line editorsAnotherTest
Makes C-c print "^C" and continue prompting on a new line. Also fixes a problem where an interrupted get_line() would need more read()'s than required to update the display.
2020-08-18LibLine: Read configuration from a config fileAnotherTest
2020-08-15Shell: Allow redirections and pipes on builtinsAnotherTest
Fixes #3072.
2020-08-09Shell: Stop a for loop upon receiving two consecutive interruptionsAnotherTest
This does not work perfectly (just like every other shell...), if the running program handles the signal (SIGINT in this case) and quits cleanly, the shell cannot detect the interruption. This is the case with our `sleep(1)`.
2020-08-06LibLine+Shell: Remove unused split_mechanismNico Weber
It was only read in should_break_token(), which had no callers. should_break_token() also got `foo\\ bar` and `"foo bar"` wrong.
2020-08-06Shell: Store jobs as NonnullRefPtr<Job>Andreas Kling
2020-08-06Shell: Mark suspended children as such when receiving a SIGCHLDAnotherTest
2020-08-04Shell: Give the TTY to the foreground processAnotherTest
This fixes the bug with the shell not waiting for any foreground process that attempts to read from the terminal in the Lagom build.
2020-08-04Shell: Correct FdRedirection inheriting from two RefCounted basesAnotherTest
Also add missing calls to `adopt()`.
2020-08-04Shell: Add support for ARGV (and $*, $#)AnotherTest
This patchset also adds the 'shift' builtin, as well as the usual tests. closes #2948.
2020-07-30Shell: Do not assume that wstatus is valid after wait() returns 0AnotherTest
According to the linux waitid manpage, the value of wstatus is unspecified if wait() returns 0, so we should not assume that any value it holds is correct (including the exit code). This is only applicable to the Lagom build.
2020-07-13Shell: Avoid waiting for jobs that were *just* unblockedAnotherTest
This fixes the issue with C-z not suspending the job on the first try. ...and further signal issues when the suspended job is contiued.
2020-07-13Shell: Put children in their own process groups and fix job controlAnotherTest
This commit fixes job control by putting children in their own process group, and proxying TTY signals to active jobs. This also cleans up the code around builtin_disown a bit to use the newer job interfaces.
2020-07-09Shell: Pledge sigactionTom
The shell is wiring up signal handlers, and when they get torn down by Core::EventLoop, they are reset, which requires sigaction.
2020-07-09Shell: Handle signals asynchronouslyTom
Fixes #2717
2020-07-07Shell: Run both /etc/shellrc and ~/.shellrc on startupAndreas Kling
The global script runs before the local (per-user) one.
2020-07-06Shell: Keep the TTY on the same pgroup to get tty signalsAnotherTest
This allows the shell to be notified about SIGWINCH even when a child process is running in the foreground.
2020-07-06Shell: Handle the case where the child we're waiting for doesn't existAnotherTest
Normally, this should not happen, as the child should stay around until we do a waitid on it.
2020-07-06Shell: Do not treat the absence of an init script as an errorAnotherTest
2020-07-05Shell: Build as part of Lagom as wellAnotherTest
Bringing the Serenity Shell to your very own host system :^)
2020-07-05Shell: Read and evaluate an init file on startAnotherTest
This behaviour is overridable with the `--skip-init' flag. The default file is at '~/shell-init.sh'
2020-07-05Shell: Use ArgsParser for argument parsingAnotherTest
2020-07-05Shell: Switch to a new parser and ASTAnotherTest
This commit also completely reworks the execution, highlighting and completion model to work with the new AST. New additions: - $(...) stdout captures - fd>&fd redirections - fd>&- redirections (close fd) - read-write redirections (<> path) - completely event-based execution - the weird idea of allowing the user to redirect the shell's own fds - variables in strings - local variables - minimal list support - adding hyperlinks to all paths that exist
2020-06-01LibLine: Handle interrupts againAnotherTest
This commit makes LibLine handle interrupts (as reported via interrupted() and resized()) again. There is a little catch with the shell: ``` $ ls | pipe> <C-c> (prompt stays here until a key is pressed) ```
2020-05-27Shell: Avoid messing with sigaction while waiting for a childAnotherTest
2020-05-27LibLine: Use Core::EventLoop for outer read loopAnotherTest
This commit changes LibLine's internal structure to work in an event loop, and as a result, also switches it to being a Core::Object.
2020-05-26Userland et al: Pledge sigaction when neededSergey Bugaev
* In some cases, we can first call sigaction()/signal(), then *not* pledge sigaction. * In other cases, we pledge sigaction at first, call sigaction()/signal() second, then pledge again, this time without sigaction. * In yet other cases, we keep the sigaction pledge. I suppose these could all be migrated to drop it or not pledge it at all, if somebody is interested in doing that.
2020-05-25Shell: Refuse to be suspended with ^ZAnotherTest
Suspending the shell while interacting with it is pretty weird, so let's just disallow this behaviour.
2020-05-20LibLine: Unify completion hooks and adapt its usersAnotherTest
LibLine should ultimately not care about what a "token" means in the context of its user, so force the user to split the buffer itself. This also allows the users to pick up contextual clues as well, since they have to lex the line themselves. This commit pacthes Shell and the JS repl to better handle completions, so certain wrong behaviours are now corrected as well: - JS repl can now complete "Object . getOw<tab>" - Shell can now complete "echo | ca<tab>" and paths inside strings
2020-05-17Shell: Switch to using Core::EventLoopAnotherTest
This commit refactors Shell to a Core::Object and switches its looping to Core::EventLoop.
2020-05-17Shell: Patch most of the builtins to use Core::ArgsParserAnotherTest
The remaining one is 'pushd', which seems to have relatively complex logic with regards to its arguments.
2020-05-17Shell: Add job control capabilitiesAnotherTest
This patchset adds the `jobs`, `fg` and `bg` builtins.
2020-05-16Shell: Properly handle parser syntax errorsLinus Groh
In the case of a syntax error the shell parser prints an error message to stderr and returns an empty Vector<Command> - in that case we shouldn't try to determine whether or not we can continue parsing but abort immediately - is_complete() expects that *something* was parsed successfully. Fixes #2251.
2020-05-16Shell: Use DirIterator::SkipParentAndBaseDirShannon Booth
2020-05-15Shell: Correct program stop behaviourAnotherTest
Prior to this, we would only wait for program exit; the shell should stop waiting once the program has been stopped. Fixes #2230
2020-05-15Shell: Print correct errno when execvp() failsSergey Bugaev
Amusingly enough, this was caused by yet another bug.
2020-05-13Shell: Break out of continuation when ^C is pressedAnotherTest
This fixes the little issue with Shell not allowing cancellation of commands once they were in continuation mode ``` $ ls ' $ # No matter what we do here, we cannot escape 'ls' ```
2020-05-10Shell: Hyperlink output from "pwd" and "dirs" built-ins :^)Andreas Kling
2020-05-10Shell: Support basic syntax highlightingAnotherTest
2020-05-10Shell: Parse commentsAnotherTest
2020-05-10Shell: Include some metadata in parsed tokens and ask for continuationAnotherTest
This patchset adds some metadata to Parser::parse() which allows the Shell to ask for the rest of a command, if it is not complete. A command is considered complete if it has no trailing pipe, or unterminated string.
2020-05-04Shell: Check for invalid #! in commandsAndrew Kaster
2020-04-30Shell: Provide the correct invariant length to the line editorAnotherTest
2020-04-30Shell+LibLine: Handle escaped characters correctlyAnotherTest
This patchset fixes incorrect handling of escaped tokens (`a\ b`) in Shell autocompletion and LibLine. The users of LibLine can now choose between two token splitting modes, either taking into account escapes, or ignoring them.
2020-04-27Shell: use access() syscall to check if files are executable by userStephan Unverwerth
2020-04-21LibCore: Make Core::File::open() return a Result<NNRP<File>, String>Andreas Kling
It was impractical to return a RefPtr<File> since that left us no way to extract the error string. This is usually needed for the UI, so the old static open() got basically no use.
2020-04-19Shell: Correct suggestion of directoriesAnotherTest
2020-04-19LibLine: Allow suggestions to have trailing trivia stringsAnotherTest
These strings would be applied when inserted into the buffer, but are not shown as part of the suggestion. This commit also patches up Userland/js and Shell to use this functionality
2020-04-19Shell: Don't return early if command is in PATH and a directoryLinus Groh