This reverts commit ce0bd9298a.
Pipe magic is removed with this patch.
We remove pipe magic because its implementation in libimagstore is too
complicated and the benefits are too small.
Having this functionality would be really nice, but the cost-benefit
ratio would still be too high.
The implementation in the store would require a rewrite of the internal
caching functionality in the store, plus some functionality to serialize
and deserialize the cache. This is theoretically possible, but as the
store only knows about "StoreEntry" objects, and only the backend knows
of "Entry" (which would be simply de/serializeable), the complexity
increases a _lot_.
Hence, we drop this feature-idea here.
Maybe, at some later point, this functionality will be in imag. The
history of development of this feature is in the history, we just don't
have it merged.
Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
This fixes the following problem:
If the editor setting was "vim " instead of "vim", the editor was called
with `"vim" " "`, which resulted in unexpected behaviour.
The patch fixes this.
This fixes the issue that spawning the editor trashes the terminal.
The signature of the Runtime::editor() function changed, which has to be
fixed in using code.
do inherit stdin and stderr from parent process, to not break terminal
editors when editing stuff.
vim printed "Input not from terminal" warning messages. This was fixed
by this commit.
When we merged the changes in libimagrt so that it automatically detects
whether stdin/stdout is a TTY and provides the user with stderr in case
stdout is not a TTY, we forgot that things like
imag foo | grep bar
becomes impossible with that, because imag detects that stdout is not a
tty and automatically uses stderr for output.
But in this case, we don't want that. The output has to be stdout in
this case.
With this change, we have a flag in the runtime ("--pipe-magic" or "-P",
globally available) which turns on "pipe magic".
The expected behaviour is the following, if "-P" is passed:
* If stdout is a TTY, we print to stdout
* If stdout is not a TTY, we print to stderr
* If stdin is not a TTY, we do not provide it
If "-P" is not passed, we allow the user of libimagrt to use stdin for
interactive stuff (the interactive stuff is not yet implemented).
Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
This is another approach for providing access to stdin/out/err via
libimagrt::runtime::Runtime.
The Runtime object does configure which output gets returned (stdout if
stdout is a tty, else stderr).
With this we can change libimagrt to read/write the store from/to
stdin/stdout without the user noticing that she does not write to stdout
but stderr.
Reading from stdin is not possible then, though.
This way we can control whether "out" output goes to stdout or stderr
without the user of the functionality knowing.
This is useful for later when we use libimagrt to automatically
read and write the store from and to stdout/in depending on whether we
are talking to a TTY or a pipe.
Adapt libimagrt interface to export the functions we need to do this.
This is not that nice, but the best approach without rewriting large
parts of libimagrt.
