mirror of https://github.com/hrfee/jfa-go.git
114 lines
2.9 KiB
Go
114 lines
2.9 KiB
Go
package main
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import (
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"fmt"
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"html/template"
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"log"
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"os"
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"os/exec"
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"path/filepath"
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"runtime"
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"runtime/debug"
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"strings"
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"time"
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"github.com/robert-nix/ansihtml"
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)
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// https://gist.github.com/swdunlop/9629168
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func identifyPanic() string {
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var name, file string
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var line int
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var pc [16]uintptr
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n := runtime.Callers(4, pc[:])
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for _, pc := range pc[:n] {
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fn := runtime.FuncForPC(pc)
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if fn == nil {
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continue
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}
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file, line = fn.FileLine(pc)
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name = fn.Name()
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if !strings.HasPrefix(name, "runtime.") {
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break
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}
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}
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switch {
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case name != "":
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return fmt.Sprintf("%v:%v", name, line)
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case file != "":
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return fmt.Sprintf("%v:%v", file, line)
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}
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return fmt.Sprintf("pc:%x", pc)
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}
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// OpenFile attempts to open a given file in the appropriate GUI application.
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func OpenFile(fpath string) (err error) {
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switch PLATFORM {
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case "linux":
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err = exec.Command("xdg-open", fpath).Start()
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case "windows":
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err = exec.Command("rundll32", "url.dll,FileProtocolHandler", fpath).Start()
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case "darwin":
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err = exec.Command("open", fpath).Start()
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default:
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err = fmt.Errorf("unknown os")
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}
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return
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}
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// Exit dumps the last 100 lines of output to a crash file in /tmp (or equivalent), and generates a prettier HTML file containing it that is opened in the browser if possible.
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func Exit(err interface{}) {
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tmpl, err2 := template.ParseFS(localFS, "html/crash.html", "html/header.html")
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if err2 != nil {
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log.Fatalf("Failed to load template: %v", err)
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}
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logCache := lineCache.String()
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if err != nil {
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fmt.Println(err)
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logCache += "\n" + fmt.Sprint(err)
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}
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logCache += "\n" + string(debug.Stack())
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sanitized := sanitizeLog(logCache)
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data := map[string]interface{}{
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"Log": logCache,
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"SanitizedLog": sanitized,
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}
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if err != nil {
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data["Err"] = fmt.Sprintf("%s %v", identifyPanic(), err)
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}
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// Use dashes for time rather than colons for Windows
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fpath := filepath.Join(temp, "jfa-go-crash-"+time.Now().Local().Format("2006-01-02T15-04-05"))
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err2 = os.WriteFile(fpath+".txt", []byte(logCache), 0666)
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if err2 != nil {
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log.Fatalf("Failed to write crash dump file: %v", err2)
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}
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log.Printf("\n------\nA crash report has been saved to \"%s\".\n------", fpath+".txt")
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// Render ANSI colors to HTML
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data["Log"] = template.HTML(string(ansihtml.ConvertToHTML([]byte(data["Log"].(string)))))
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data["SanitizedLog"] = template.HTML(string(ansihtml.ConvertToHTML([]byte(data["SanitizedLog"].(string)))))
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data["Err"] = template.HTML(string(ansihtml.ConvertToHTML([]byte(data["Err"].(string)))))
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f, err2 := os.OpenFile(fpath+".html", os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0666)
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if err2 != nil {
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log.Fatalf("Failed to open crash dump file: %v", err2)
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}
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defer f.Close()
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err2 = tmpl.Execute(f, data)
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if err2 != nil {
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log.Fatalf("Failed to execute template: %v", err2)
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}
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if err := OpenFile(fpath + ".html"); err != nil {
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log.Printf("Failed to open browser, trying text file...")
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OpenFile(fpath + ".txt")
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}
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if TRAY {
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QuitTray()
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} else {
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os.Exit(1)
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}
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}
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