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# Purpose:
# Print first LINES_TO_READ from a file.
# The environment variables SEARCH_FILE and LINES_TO_READ must be set
# before sourcing this routine.
# Use:
# When the test is slow ( example because of ASAN build) then it
# may not flush the lines when 'cat' command is called and the
# test could fail with missing lines. Hence this can be used to
# to print first N lines.
#
perl;
use strict;
my $search_file = $ENV{SEARCH_FILE} or die "SEARCH_FILE not set";
my $lines_to_read = $ENV{LINES_TO_READ} or die "LINES_TO_READ not set";
open(FILE, '<', $search_file) or die "Can't open file $search_file: $!";
my $line_count = 0;
while ($line_count < $lines_to_read and my $line = <FILE>)
{
print $line;
$line_count++;
}
close(FILE);
EOF