#30 Implementation exec-alike function

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opened 2 years ago by likoski · 5 comments
likoski commented 2 years ago
Owner

Aer misses some kind of exec() or system(). It might be very useful, especially on embedded devices to interact with system and other software. I think we should implements it before 1.0.

Aer misses some kind of exec() or system(). It might be very useful, especially on embedded devices to interact with system and other software. I think we should implements it before 1.0.
likoski added the
enhancement
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likoski added the
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belliash commented 2 years ago
Owner

Generally speaking, I think this is good idea.

int exec(string $cmd, [string &$output]);

First argument contains command to execute, second parameter will contains output from command execution if passed by reference.

Function returns -1 if any error ocurred, or command return value.

Some other ideas?

Generally speaking, I think this is good idea. int exec(string $cmd, [string &$output]); First argument contains command to execute, second parameter will contains output from command execution if passed by reference. Function returns -1 if any error ocurred, or command return value. Some other ideas?
devnexen commented 2 years ago
Collaborator

Should we get also a potential error reason ? (like from errno for example)

Should we get also a potential error reason ? (like from errno for example)
belliash commented 2 years ago
Owner

What kind of error do we expect? If application launched throw error it should be saved in $output and its return code should be returned by exec() function. Do we need something more?

What kind of error do we expect? If application launched throw error it should be saved in $output and its return code should be returned by exec() function. Do we need something more?
devnexen commented 2 years ago
Collaborator

All exec* sets errno internally, was just wondering if we should return the string error as third parameter (optional).

Not forcing anything here, it is good as is too.

All exec* sets errno internally, was just wondering if we should return the string error as third parameter (optional). Not forcing anything here, it is good as is too.
belliash commented 2 years ago
Owner

This is true. I just wonder in which case it could be useful, because actually I don't find a reason why it might fail, except when exec() would be disabled.

This is true. I just wonder in which case it could be useful, because actually I don't find a reason why it might fail, except when exec() would be disabled.
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