bb243d53d3
4.5.0 Customizable output format for redirected output In a natural follow-on to the 4.4.0 redirected-output feature, the 4.5.0 release allows your tap-files to be in a different output format from the main program output. For example, using mlr --icsv --opprint ... then put --ojson 'tee > "mytap-".$a.".dat", $*' then ... the input is CSV, the output is pretty-print tabular, but the tee-files output is written in JSON format. Likewise --ofs, --ors, --ops, --jvstack, and all other output-formatting options from the main help at mlr -h and/or man mlr default to the main command-line options, and may be overridden with flags supplied to mlr put and mlr tee. 4.4.0 Redirected output, row-value shift, and other features The principal feature of Miller 4.4.0 is redirected output. Inspired by awk, Miller lets you tap/tee your data as it's processed, run output through subordinate processes such as gzip and jq, split a single file into multiple files per an account-ID column, and so on. Details: http://johnkerl.org/miller/doc/reference.html#Redirected-output_statements_for_put Other features: mlr step -a shift allows you to place the previous record's values alongside the current record's values: http://johnkerl.org/miller/doc/reference.html#step mlr head, when used without the group-by flag (-g), stops after the specified number of records has been output. For example, even with a multi-gigabyte data file, mlr head -n 10 hugefile.dat will complete quickly after producing the first ten records from the file. The sec2gmtdate verb, and sec2gmtdate function for filter/put, is new: please see http://johnkerl.org/miller/doc/reference.html#sec2gmtdate and http://johnkerl.org/miller/doc/reference.html#Functions_for_filter_and_put. sec2gmt and sec2gmtdate both leave non-numbers as-is, rather than formatting them as (error). This is particularly relevant for formatting nullable epoch-seconds columns in SQL-table output: if a column value is NULL then after sec2gmt or sec2gmtdate it will still be NULL. The dot operator has been universalized to work with any data type and produce a string. For example, if the field n has integers, then instead of typing mlr put '$name = "value:".string($n)' you can now simply domlr put '$name = "value:".$n'. This is particularly timely for creating filenames for redirected print/dump/tee/emit output. The online documents now have a copy of the Miller manpage: http://johnkerl.org/miller/doc/manpage.html Bugfix: inside filter/put, $x=="" was distinct from isempty($x). This was nonsensical; now both are the same.
6 lines
388 B
Text
6 lines
388 B
Text
$NetBSD: distinfo,v 1.9 2016/09/01 16:25:51 wiz Exp $
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SHA1 (mlr-4.5.0.tar.gz) = 8d1cb1c1b32790b92c404e893b2b66659238d0b6
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RMD160 (mlr-4.5.0.tar.gz) = c9f05de18c9f9ecb8004ef332ad995efbd5c6793
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SHA512 (mlr-4.5.0.tar.gz) = 31b1c44b03b36d9ed98986ab6d01afdf5d74e36917d40235bb00ed0294ab83c254081f81e7ed2ef74616549ea54cbd08cb513e91dbf24d22913dba4db43fce55
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Size (mlr-4.5.0.tar.gz) = 1010180 bytes
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