This allows the parser to finally parse the entire source into a single
AST.
As a result of allowing comments inside sequences, Sequence is also
marked as would_execute if its left or right node would.
This commit also removes the ExecutionInputType and directly uses
RefPtr<Shell> instead, since nothing else is needed for execution
purposes, and also makes the shell refuse to evaluate commands with
any sort of syntax error.
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
This commit allows the Shell to complete paths in redirections.
A closing quote is added if the path is an unclosed quote.
```
$ foo > "foob<tab>
$ foo > "foobar"
```
This commit adds the InBackground and ShortCircuitOnFailure attributes
to commands, which respectively cause the command to be run in the
background, and abort the command chain with exit status != 0.
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.
Previously the shell parser would discard empty tokens. We now allow
them when they are enclosed in quotes (either '' or "")
This means that a command like _echo ""_ will actually pass an empty
string to /bin/echo in argv[1] now.
As suggested by Joshua, this commit adds the 2-clause BSD license as a
comment block to the top of every source file.
For the first pass, I've just added myself for simplicity. I encourage
everyone to add themselves as copyright holders of any file they've
added or modified in some significant way. If I've added myself in
error somewhere, feel free to replace it with the appropriate copyright
holder instead.
Going forward, all new source files should include a license header.
Using int was a mistake. This patch changes String, StringImpl,
StringView and StringBuilder to use size_t instead of int for lengths.
Obviously a lot of code needs to change as a result of this.
This was unnecessarily confusing. When we build up a chain of commands
connected by pipes, we now store the file descriptors of each end of
these pipes as rewirings in a vector. The rewirings are then put into
effect by calls to dup2().
