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package logging
import (
"fmt"
"io"
"os"
"runtime/debug"
"strings"
"time"
)
var UICleanup = func() {}
// PanicHandler tries to restore the terminal. A stack trace is written to
// aerc-crash.log and then passed on if a panic occurs.
func PanicHandler() {
r := recover()
if r == nil {
return
}
UICleanup()
filename := time.Now().Format("/tmp/aerc-crash-20060102-150405.log")
panicLog, err := os.OpenFile(filename, os.O_SYNC|os.O_APPEND|os.O_CREATE|os.O_WRONLY|os.O_EXCL, 0o600)
if err != nil {
// we tried, not possible. bye
panic(r)
}
defer panicLog.Close()
outputs := io.MultiWriter(panicLog, os.Stderr)
// if any error happens here, we do not care.
fmt.Fprintln(panicLog, strings.Repeat("#", 80))
fmt.Fprint(panicLog, strings.Repeat(" ", 34))
fmt.Fprintln(panicLog, "PANIC CAUGHT!")
fmt.Fprint(panicLog, strings.Repeat(" ", 24))
fmt.Fprintln(panicLog, time.Now().Format("2006-01-02T15:04:05.000000-0700"))
fmt.Fprintln(panicLog, strings.Repeat("#", 80))
fmt.Fprintf(outputs, "%s\n", panicMessage)
fmt.Fprintf(panicLog, "Error: %v\n\n", r)
panicLog.Write(debug.Stack())
fmt.Fprintf(os.Stderr, "\nThis error was also written to: %s\n", filename)
panic(r)
}
const panicMessage = `
aerc has encountered a critical error and has terminated. Please help us fixing
this by sending this log and the steps to reproduce the crash to:
~rjarry/aerc-devel@lists.sr.ht
Thank you
`
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