hbspbar

commit d5ffccc1b4499e01ebb8d727c4651856894e154f
parent 3776ecd92be2886b2b9d41c2b78cc2adf46e14e6
Author: hhvn <dev@hhvn.uk>
Date:   Sun, 19 Nov 2023 14:51:31 +0000

Memory status

Diffstat:
A
status/03-mem.go
 | 
63
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 63 insertions(+), 0 deletions(-)
diff --git a/status/03-mem.go b/status/03-mem.go
@@ -0,0 +1,63 @@
+package status // import "hhvn.uk/hbspbar/status"
+
+import (
+	"fmt"
+	"strings"
+
+	"hhvn.uk/hbspbar/common"
+)
+
+func checkMemField(m map[string]int, k string) error {
+	_, ok := m[k]
+	if !ok {
+		return fmt.Errorf("missing %s", k)
+	}
+	return nil
+}
+
+func mem(name string) error {
+	u := newUpdate(name)
+
+	mem := make(map[string]int)
+
+	lines, err := common.FileAsLines("/proc/meminfo")
+	if err != nil { return err }
+
+	for _, l := range lines {
+		name, rest, _ := strings.Cut(l, ":")
+		val := strings.TrimLeft(strings.TrimSuffix(rest, " kB"), " ")
+
+		n, err := common.Intify(val)
+		if err != nil { return err }
+
+		mem[name] = n
+	}
+
+	if err := checkMemField(mem, "MemTotal"); err != nil { return err }
+	if err := checkMemField(mem, "MemAvailable"); err != nil { return err }
+
+	total  := mem["MemTotal"]
+	avail  := mem["MemAvailable"]
+	p      := int(float64(avail) / float64(total) * 100.0)
+	cx     := 0
+	
+	cx     += u.drawPercentBar(cx, p)
+	_, err  = u.drawText(cx, blendGYR(p), fmt.Sprintf("%d%%", p))
+
+	updates <- u
+
+	sleep(1)
+
+	return nil
+}
+
+func init() {
+	name := "mem"
+	register(name)
+
+	go func() {
+		for {
+			checkError(name, mem(name))
+		}
+	}()
+}