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fix: probe alternative variables for health check #59

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merged 1 commit into from
Aug 5, 2023
Merged

fix: probe alternative variables for health check #59

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62 changes: 49 additions & 13 deletions main_linux.go
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ import (
_ "embed"
"errors"
"fmt"
"io/fs"
"log"
"os"
"os/exec"
Expand Down Expand Up @@ -68,28 +69,54 @@ func main() {
}

first := batteries[0]
mustRead := func(v string) string {
data, err := os.ReadFile(filepath.Join(first, v))
if err != nil {
log.Fatal(err)
}
return string(data)
}

switch option := os.Args[1]; option {
case "-h", "--help":
usage()
case "-v", "--version":
fmt.Fprintf(os.Stdout, version, tag, time.Now().Year())
case "capacity", "status":
fmt.Fprint(os.Stdout, mustRead(option))
contents, err := os.ReadFile(filepath.Join(first, option))
if err != nil {
log.Fatal(err)
}
fmt.Fprint(os.Stdout, string(contents))
case "health":
// Some devices use charge_* and others energy_* so probe both.
var enoent bool
a, err := os.ReadFile(filepath.Join(first, "charge_full"))
if err != nil {
if !errors.Is(err, fs.ErrNotExist) {
log.Fatal(err)
}
enoent = true
}
b, err := os.ReadFile(filepath.Join(first, "charge_full_design"))
if err != nil {
if !errors.Is(err, fs.ErrNotExist) {
log.Fatal(err)
}
enoent = true
}
if enoent {
a, err = os.ReadFile(filepath.Join(first, "energy_full"))
if err != nil {
if !errors.Is(err, fs.ErrNotExist) {
log.Fatal(err)
}
}
b, err = os.ReadFile(filepath.Join(first, "energy_full_design"))
if err != nil {
if !errors.Is(err, fs.ErrNotExist) {
log.Fatal(err)
}
}
}
var v, w int
_, err := fmt.Sscanf(mustRead("energy_full"), "%d\n", &v)
_, err = fmt.Sscanf(string(a), "%d\n", &v)
if err != nil {
log.Fatal(err)
}
_, err = fmt.Sscanf(mustRead("energy_full_design"), "%d\n", &w)
_, err = fmt.Sscanf(string(b), "%d\n", &w)
if err != nil {
log.Fatal(err)
}
Expand All @@ -112,7 +139,12 @@ func main() {
os.Exit(1)
}

current, err := strconv.Atoi(strings.TrimSpace(mustRead(threshold)))
contents, err := os.ReadFile(filepath.Join(first, threshold))
if err != nil {
log.Fatal(err)
}

current, err := strconv.Atoi(strings.TrimSpace(string(contents)))
if err != nil {
log.Fatal(err)
}
Expand All @@ -133,7 +165,11 @@ func main() {
fmt.Fprintln(os.Stdout, "Persistence of the current charging threshold enabled.")
case "threshold":
if len(os.Args) < 3 {
fmt.Fprint(os.Stdout, mustRead(threshold))
contents, err := os.ReadFile(filepath.Join(first, threshold))
if err != nil {
log.Fatal(err)
}
fmt.Fprint(os.Stdout, string(contents))
} else {
t := os.Args[2]
v, err := strconv.Atoi(t)
Expand Down