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author | Chen Guo <chen.guo.0625@gmail.com> | 2010-01-08 03:42:27 -0800 |
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committer | Pádraig Brady <P@draigBrady.com> | 2010-11-22 01:45:15 +0000 |
commit | be107398e56e9f6ada8cd558b3f43bb1ed70fb84 (patch) | |
tree | d0fb06eeb230ba097da352d041443a27e5a01d74 /README-hacking | |
parent | dadca988afc4bbe132c4919fd669272ac6cb2566 (diff) | |
download | coreutils-be107398e56e9f6ada8cd558b3f43bb1ed70fb84.tar.xz |
split: add --number to generate a particular number of files
* src/split.c (usage, long_options, main): New options --number,
--unbuffered, --elide-empty-files.
(set_suffix_length): New function to auto increase suffix length
to handle a specified number of files.
(create): New function. Refactored from cwrite() and ofile_open().
(bytes_split): Add max_files argument to support byte chunking.
(lines_chunk_split): New function. Split file into chunks of lines.
(bytes_chunk_extract): New function. Extract a chunk of file.
(of_info): New struct. Used by functions lines_rr and ofile_open
to keep track of file descriptors associated with output files.
(ofile_open): New function. Shuffle file descriptors when there
are more output files than available file descriptors.
(lines_rr): New function to distribute lines round-robin to files.
(chunk_parse): New function. Parses K/N syntax.
* tests/misc/split-bchunk: New test for byte chunking.
* tests/misc/split-lchunk: New test for line delimited chunking.
* tests/misc/split-rchunk: New test for round-robin chunking.
* tests/Makefile.am: Reference new tests.
* tests/misc/split-fail: Add failure scenarios for new options.
* tests/misc/split-l: Fix a typo. s/ln/split/.
* doc/coreutils.texi (split invocation): Document --number.
* NEWS: Mention the new feature.
* .mailmap: Map new email address for shortlog.
Signed-off-by: Pádraig Brady <P@draigBrady.com>
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