Table of Contents
Table of Contents
Table of Contents
Table of Contents
Prototype: readintlist(filename, comment, split, maxentries, maxbytes)
Prototype: readreallist(filename, comment, split, maxentries, maxbytes)
Prototype: readstringlist(filename, comment, split, maxentries, maxbytes)
Return type: ilist
, rlist
or slist
Description: Splits the file filename
into separated
values and returns the list.
The comment
regex will strip out unwanted patterns from the file being read,
leaving unstripped characters to be split into fields. Using the empty string
(""
) indicates no comments.
Arguments:
filename
: File name to read, in the range"?(/.*)
comment
: Unanchored regex matching comments, in the range.*
split
: Unanchored regex to split data, in the range.*
maxentries
: Maximum number of entries to read, in the range0,99999999999
maxbytes
: Maximum bytes to read, in the range0,99999999999
Example:
Prepare:
echo 1 > /tmp/cfe_list_ints
echo 2 >> /tmp/cfe_list_ints
echo 3 >> /tmp/cfe_list_ints
echo 1.1 > /tmp/cfe_list_reals
echo 2.2 >> /tmp/cfe_list_reals
echo 3 >> /tmp/cfe_list_reals
echo alpha > /tmp/cfe_list_strings
echo beta >> /tmp/cfe_list_strings
echo gamma >> /tmp/cfe_list_strings
Run:
body common control
{
bundlesequence => { "example" };
}
bundle agent example
{
vars:
"integers" ilist => readintlist("/tmp/cfe_list_ints","#.*","[\n]",10,400);
"strings" slist => readstringlist("/tmp/cfe_list_strings", "#.*", "\s", 10, 400);
"reals" rlist => readreallist("/tmp/cfe_list_reals","#.*","[\n]",10,400);
reports:
"integers in /tmp/cfe_list_ints: $(integers)";
"strings in /tmp/cfe_list_strings: $(strings)";
"reals in /tmp/cfe_list_reals: $(reals)";
}
Output:
R: integers in /tmp/cfe_list_ints: 1
R: integers in /tmp/cfe_list_ints: 2
R: integers in /tmp/cfe_list_ints: 3
R: strings in /tmp/cfe_list_strings: alpha
R: strings in /tmp/cfe_list_strings: beta
R: strings in /tmp/cfe_list_strings: gamma
R: reals in /tmp/cfe_list_reals: 1.1
R: reals in /tmp/cfe_list_reals: 2.2
R: reals in /tmp/cfe_list_reals: 3