navigine/jq
1
0 Fork 0
mirror of https://github.com/jqlang/jq.git synced 2026-10-28 08:05:54 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add streaming utilities (fix #827)

Browse Source
This commit is contained in:
Nicolas Williams committed 2015-06-26 20:45:06 -05:00
1 parent 5108a451ca
commit 25d47ca08e
4 files changed
+97 -53
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

tests/modules/streaming.jq
-49
View File
@@ -1,49 +0,0 @@
# Filter and adjust streamed values so that only values from the .th
# level are output.
def trunc(stream):
. as $n | stream | . as $input | if (.[0]|length) > $n then setpath([0];$input[0][$n:]) else empty end;
# Reduce streamed values back to normal
def tovalues(i):
def debug(msg): . as $dot | [msg, .] | debug | $dot;
foreach i as $item (
[null,false,null];
# Updator
#
# If the new $item is a top-level value,
# then clear out the current value
. as [$cur, $cur_isvalid, $prev] |
$item as [$path, $leaf] |
($item|length > 1) as $has_leaf |
($item|length == 1) as $closing |
($path|length) as $plen |
# if the new $item terminates the current value, then cur is ready
# for extraction and we'll start building a new value with the next
# inputs
if ($plen == 0) or # top-level scalar
($closing and $plen < 2) then [null,false,$cur]
# else continue building up cur
else . end |
. as [$cur, $cur_isvalid, $prev] |
# If the new $item has a leaf, upate the current value
if $has_leaf and $plen > 0 then
[$cur|setpath(($path); $leaf), # update current value
true, # current value is now valid (if, perhaps, incomplete)
$prev] # previous value is unchanged
else .
end;
# Extractor
#
. as [$cur, $cur_isvalid, $prev] |
$item as [$path, $leaf] |
($item|length > 1) as $has_leaf |
($item|length == 1) as $closing |
($path|length) as $plen |
# If previous value is valid, output it
if $plen == 1 and $closing then $prev else empty end,
# and/or if the new $item is a top-level scalar, output it
if $plen == 0 then $leaf else empty end
);