141 lines
3 KiB
Go
141 lines
3 KiB
Go
package main
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import (
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"bufio"
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"context"
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"fmt"
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"os/exec"
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"strings"
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"sync"
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"github.com/wailsapp/wails/v2/pkg/runtime"
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)
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type LogcatLine struct {
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Raw string `json:"raw"`
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Level string `json:"level"`
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Tag string `json:"tag"`
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Message string `json:"message"`
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PID string `json:"pid"`
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Time string `json:"time"`
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}
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var (
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logcatCancel context.CancelFunc
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logcatMu sync.Mutex
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)
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// StartLogcat begins streaming logcat to the frontend via events.
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// filter: optional tag filter e.g. "ActivityManager:I *:S"
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// buffer: "main", "radio", "events", "crash", or "all"
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func (a *App) StartLogcat(filter string, buffer string) error {
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logcatMu.Lock()
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defer logcatMu.Unlock()
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// Stop any existing logcat
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if logcatCancel != nil {
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logcatCancel()
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logcatCancel = nil
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}
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adbPath, err := a.getBinaryPath("adb")
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if err != nil {
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return err
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}
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args := []string{"logcat", "-v", "threadtime"}
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if buffer != "" && buffer != "main" {
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if buffer == "all" {
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args = append(args, "-b", "all")
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} else {
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args = append(args, "-b", buffer)
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}
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}
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if filter != "" {
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args = append(args, strings.Fields(filter)...)
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}
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ctx, cancel := context.WithCancel(context.Background())
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logcatCancel = cancel
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cmd := exec.CommandContext(ctx, adbPath, args...)
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setCommandSysProcAttr(cmd)
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stdout, err := cmd.StdoutPipe()
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if err != nil {
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cancel()
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return fmt.Errorf("failed to get stdout pipe: %w", err)
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}
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if err := cmd.Start(); err != nil {
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cancel()
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return fmt.Errorf("failed to start logcat: %w", err)
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}
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go func() {
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defer cancel()
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scanner := bufio.NewScanner(stdout)
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scanner.Buffer(make([]byte, 1024*1024), 1024*1024)
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for scanner.Scan() {
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line := scanner.Text()
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parsed := parseLogcatLine(line)
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runtime.EventsEmit(a.ctx, "logcat:line", parsed)
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}
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runtime.EventsEmit(a.ctx, "logcat:stopped", nil)
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cmd.Wait()
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}()
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return nil
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}
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// StopLogcat stops the running logcat stream.
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func (a *App) StopLogcat() {
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logcatMu.Lock()
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defer logcatMu.Unlock()
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if logcatCancel != nil {
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logcatCancel()
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logcatCancel = nil
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}
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}
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// ClearLogcat clears all logcat buffers.
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func (a *App) ClearLogcat() error {
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_, err := a.runCommand("adb", "logcat", "-c")
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return err
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}
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// parseLogcatLine parses a threadtime format logcat line:
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// MM-DD HH:MM:SS.mmm PID TID LEVEL TAG: message
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func parseLogcatLine(line string) LogcatLine {
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result := LogcatLine{Raw: line}
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parts := strings.SplitN(line, " ", 7)
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if len(parts) < 7 {
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result.Message = line
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return result
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}
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result.Time = strings.TrimSpace(parts[0] + " " + parts[1])
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result.PID = strings.TrimSpace(parts[2])
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// parts[3] = TID
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level := strings.TrimSpace(parts[4])
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if len(level) > 0 {
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result.Level = level
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}
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tagAndMsg := strings.TrimSpace(parts[5])
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if idx := strings.Index(tagAndMsg, ":"); idx >= 0 {
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result.Tag = strings.TrimSpace(tagAndMsg[:idx])
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if len(parts) > 6 {
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result.Message = strings.TrimSpace(parts[6])
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}
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} else {
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result.Tag = tagAndMsg
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if len(parts) > 6 {
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result.Message = strings.TrimSpace(parts[6])
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}
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}
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return result
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}
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