Add mem module

1 files changed, 25 insertions, 0 deletions

diff --git a/modules/mem.inc b/modules/mem.inc
new file mode 100644
index 0000000..9a94a17
--- /dev/null
+++ b/modules/mem.inc
@@ -0,0 +1,25 @@
+#!/bin/ash
+
+# Get everything from /proc/meminfo suitable for eval to import into environment
+# (Filters a few values due to invalid chars)
+# With no arguments, returns everything, otherwise only those given as arguments
+mem_env() {
+	local a e
+	if [ "$#" -eq 0 ]; then
+		e='[a-zA-Z0-9]+'
+	else
+		# Set empty first in case a value is missing
+		# TODO Within awk script (collect, check, then output)
+		for a in "$@"; do
+			echo "$a="
+		done
+		e="(${*// /|})"
+	fi
+	awk '{a=substr($1, 1, length($1)-1); if (a ~ /^'"$e"'$/ && $2 ~ /^[0-9]+$/) print a "=" $2}' "/proc/meminfo"
+}
+
+# Get a single entry from /proc/meminfo
+mem_get() {
+	awk '{if ($1 == "'"$1"':") { print $2; exit; }}' "/proc/meminfo"
+}
+