read_from_process

read_from_process :: (
    process: *Process,
    output_buffer: [] u8,
    error_buffer: [] u8,
    timeout_ms := -1
) -> (success: bool, output_bytes: int, error_bytes: int)

A timeout_ms of 0 only looks, and -1 (the default) waits for ever. Nothing arriving in time is a success with 0 and 0. Each call reads at most one buffer's worth from each pipe, so loop until process.output.eof and process.error.eof for all of it, and give the loop a time limit of its own.

Parameters

process: *Process

output_buffer: [] u8

error_buffer: [] u8

timeout_ms := -1

Returns

success: bool

output_bytes: int

error_bytes: int

process: Process;
assert(create_process(*process, "cmd.exe", "/c", "echo hi", capture_and_return_output = true));
defer deinit(*process);

output: [64] u8;
errors: [64] u8;
ok, out_count, _ := read_from_process(*process, output, errors, 5000);
assert(ok && out_count > 0);