Remove Perl version and build files; add .gitignore for .serena/

Amp-Thread-ID: https://ampcode.com/threads/T-019c58b3-06fb-733d-8fc1-f268fe7f70d5
Co-authored-by: Amp <amp@ampcode.com>

1 files changed, 129 insertions, 0 deletions

diff --git a/cmd/loadbars/main.go b/cmd/loadbars/main.go
new file mode 100644
index 0000000..f4e8985
--- /dev/null
+++ b/cmd/loadbars/main.go
@@ -0,0 +1,129 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/loadbars/loadbars/internal/app"
+	"github.com/loadbars/loadbars/internal/config"
+	"github.com/loadbars/loadbars/internal/constants"
+	"github.com/loadbars/loadbars/internal/version"
+)
+
+func main() {
+	cfg := config.Default()
+
+	var (
+		hosts    = flag.String("hosts", "", "Comma-separated list of hosts; optional user@ in front")
+		cluster  = flag.String("cluster", "", "Cluster name from /etc/clusters")
+		showHelp = flag.Bool("help", false, "Show usage")
+		showVer  = flag.Bool("version", false, "Show version")
+	)
+	flag.IntVar(&cfg.BarWidth, "barwidth", cfg.BarWidth, "Set bar width")
+	flag.IntVar(&cfg.Height, "height", cfg.Height, "Set window height")
+	flag.IntVar(&cfg.MaxWidth, "maxwidth", cfg.MaxWidth, "Set max width")
+	flag.IntVar(&cfg.CPUAverage, "cpuaverage", cfg.CPUAverage, "Num of CPU samples for avg")
+	flag.IntVar(&cfg.NetAverage, "netaverage", cfg.NetAverage, "Num of net samples for avg")
+	flag.StringVar(&cfg.NetInt, "netint", cfg.NetInt, "Interface to show netstats for")
+	flag.StringVar(&cfg.NetLink, "netlink", cfg.NetLink, "Link speed (mbit, 10mbit, 100mbit, gbit, 10gbit or number)")
+	flag.BoolVar(&cfg.ShowCores, "showcores", cfg.ShowCores, "Toggle core display")
+	flag.BoolVar(&cfg.ShowMem, "showmem", cfg.ShowMem, "Toggle mem display")
+	flag.BoolVar(&cfg.ShowNet, "shownet", cfg.ShowNet, "Toggle net display")
+	flag.BoolVar(&cfg.Extended, "extended", cfg.Extended, "Toggle extended display")
+	flag.StringVar(&cfg.Title, "title", cfg.Title, "Set title bar text")
+	flag.StringVar(&cfg.SSHOpts, "sshopts", cfg.SSHOpts, "Set SSH options")
+	flag.BoolVar(&cfg.HasAgent, "hasagent", cfg.HasAgent, "SSH key already known by agent")
+
+	flag.Parse()
+
+	if *showVer {
+		fmt.Printf("Loadbars %s %s\n", version.Version, constants.Copyright)
+		os.Exit(constants.Success)
+	}
+
+	if err := cfg.Load(); err != nil {
+		fmt.Fprintf(os.Stderr, "loadbars: config: %v\n", err)
+		os.Exit(constants.EUnknown)
+	}
+
+	// Flags override config file; re-parse into cfg for hosts/cluster
+	if *cluster != "" {
+		cfg.Cluster = *cluster
+	}
+	if *hosts != "" {
+		// Hosts from flag: optional user@host → we keep "user:host" or "host"
+		for _, h := range strings.Split(*hosts, ",") {
+			h = strings.TrimSpace(h)
+			if h == "" {
+				continue
+			}
+			cfg.Hosts = append(cfg.Hosts, normalizeHost(h))
+		}
+	}
+	// Hosts from positional args (before first flag-like arg)
+	for i := 0; i < flag.NArg(); i++ {
+		arg := flag.Arg(i)
+		if strings.HasPrefix(arg, "-") {
+			break
+		}
+		cfg.Hosts = append(cfg.Hosts, normalizeHost(arg))
+	}
+	if cfg.Cluster != "" {
+		clusterHosts, err := config.GetClusterHosts(cfg.Cluster)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "loadbars: cluster: %v\n", err)
+			os.Exit(constants.EUnknown)
+		}
+		cfg.Hosts = append(cfg.Hosts, clusterHosts...)
+	}
+
+	if *showHelp {
+		printUsage()
+		os.Exit(constants.Success)
+	}
+
+	if len(cfg.Hosts) == 0 {
+		fmt.Fprintf(os.Stderr, "loadbars: no hosts specified (use --hosts or --cluster)\n")
+		printUsage()
+		os.Exit(constants.ENoHost)
+	}
+
+	if err := app.Run(&cfg); err != nil {
+		fmt.Fprintf(os.Stderr, "loadbars: %v\n", err)
+		os.Exit(constants.EUnknown)
+	}
+	os.Exit(constants.Success)
+}
+
+// normalizeHost converts "user@host" to "host:user", or returns "host" if no user.
+func normalizeHost(h string) string {
+	h = strings.TrimSpace(h)
+	if idx := strings.Index(h, "@"); idx >= 0 {
+		user, host := strings.TrimSpace(h[:idx]), strings.TrimSpace(h[idx+1:])
+		return host + ":" + user
+	}
+	return h
+}
+
+func printUsage() {
+	fmt.Fprintf(os.Stderr, `Loadbars %s - real-time server load monitoring
+
+Usage: loadbars [HOSTS...] [OPTIONS]
+
+Options:
+  --hosts <list>     Comma-separated hosts (optional user@host)
+  --cluster <name>   Cluster from %s
+  --barwidth <n>      Bar width (default 20)
+  --height <n>        Window height (default 150)
+  --showcores         Show per-CPU bars
+  --showmem           Show memory bars
+  --shownet           Show network bars
+  --extended          Extended display (peak line)
+  --help              This help
+  --version           Print version
+
+Press 'h' during execution for hotkeys. See README for more.
+`, version.Version, constants.CSSHConfFile)
+}