Parsing libsvm events

[msivill_splunk]

I'm trying to parse a number of different libsvm files https://www.csie.ntu.edu.tw/~cjlin/libsvm/faq.html#/Q03:_Data_preparation within Splunk but unable to extract all the repeating key:value pairs. I can extract the first value called label correctly however I can only get the first value within the points (repeating key:value pairs). So a field call p_1 is created but p_2, p_3, p_4, p_5, p_6, p_7, and p_8 are missing. I've attached an example of the file to be processed and current props.conf and transforms.conf files.

libsvm file

3.0 1:69.0 2:91.0 3:57.0 4:0.08035548849583785 5:0.01453634825435611 6:25.0 7:19.0 8:-1.3157894736796152 9:0.0
5.0 1:56.0 2:97.0 3:56.0 4:0.8167951447877143 5:-0.06108637426162032 6:23.0 7:19.0 8:2.5 9:0.0
8.0 1:48.0 2:58.0 3:30.0 4:0.3969340706645018 5:0.032656706189642705 6:24.0 7:17.0 8:1.0476190476038028 9:0.0 
10.0 1:27.0 2:69.0 3:20.0 4:0.6876996766857346 5:-0.08096469266049523 6:25.0 7:18.0 8:-4.71999999997206 9:0.0

props.conf file

[libsvm]
DATETIME_CONFIG = CURRENT
NO_BINARY_CHECK = true
category = Custom
disabled = false
pulldown_type = true
SHOULD_LINEMERGE = false
REPORT-a = libsvmLabelledPoints, libsvmPoints

transforms.conf

[libsvmLabelledPoints]
REGEX = (?<label>[^\s]+) (?<points>.*)

[libsvmPoints]
SOURCE_KEY = points
REGEX = \s?([^\s\:]+):([^\s]+)\s?
FORMAT = p$1::$2
REPEAT_MATCH = true

Any pointers on the above would be great.

[msivill_splunk · Accepted solution]

Preprocessing the libsvm file with the SEDCMD in props.conf to convert the numeric keys into alphanumeric keys solved this. So the key does not begin with a numeric character i.e. p1, p2, p3, p4, p5, etc.

props.conf

[libsvm]
DATETIME_CONFIG = CURRENT
NO_BINARY_CHECK = true
category = Custom
disabled = false
pulldown_type = true
SHOULD_LINEMERGE = false
SEDCMD-p = s/(\d+:)/p\1/g
REPORT-a = libsvmLabelledPoints, libsvmPoints

transforms.conf

[libsvmLabelledPoints]
REGEX = (?<label>[^\s]+) (?<points>.*)

[libsvmPoints]
FORMAT = $1::$2
REGEX = \s?([^\s\:]+):([^\s]+)\s?
SOURCE_KEY = points