Difference between revisions of "Null flush"
Jump to navigation
Jump to search
(Added test one-liner) |
(make it actually work) |
||
| Line 6: | Line 6: | ||
If you want to test that a pipe handles null flush correctly, you can use something like: |
If you want to test that a pipe handles null flush correctly, you can use something like: |
||
<pre> |
<pre> |
||
cat <(echo -e "this\0is\ |
cat <(echo -e "this here[][\n]\0is a[][\n]\0little[][\n]\0flushing test[][\n]\0") /dev/stdin | your -z | pipe -z | goes -z | here -z |
||
</pre> |
</pre> |
||
where \0 are the nulls. Use Ctrl-D (^D) to close the |
where \0 are the nulls, and the [] are there because many of the tools expect a [][\n] at the end of a stream (all the deformatters put this at the end of the stream). Use Ctrl-D (^D) to close the input that cat keeps open. |
||
[[Category:Terminology]] |
[[Category:Terminology]] |
||
Revision as of 08:41, 20 January 2014
Null flush is an option (-z) to most Apertium programs (and programs compatible with Apertium stream format) that flushes the output buffer upon receiving the \0 character instead of on end-of-file. This allows programs which call Apertium externally to keep a translator online, meaning they can avoid startup time for every translation.
To see how to use this in practice, read Daemon.
Testing
If you want to test that a pipe handles null flush correctly, you can use something like:
cat <(echo -e "this here[][\n]\0is a[][\n]\0little[][\n]\0flushing test[][\n]\0") /dev/stdin | your -z | pipe -z | goes -z | here -z
where \0 are the nulls, and the [] are there because many of the tools expect a [][\n] at the end of a stream (all the deformatters put this at the end of the stream). Use Ctrl-D (^D) to close the input that cat keeps open.
