Initial commit with support for GitHub actions

cmd/root.go

@@ -0,0 +1,106 @@
+package cmd
+
+import (
+	"context"
+	"fmt"
+	"os"
+
+	"github.com/nektos/act/actions"
+	"github.com/nektos/act/common"
+	log "github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+)
+
+var verbose bool
+var workflowPath string
+var workingDir string
+var list bool
+var actionName string
+var dryrun bool
+
+// Execute is the entry point to running the CLI
+func Execute(ctx context.Context, version string) {
+	var rootCmd = &cobra.Command{
+		Use:          "act [event name to run]",
+		Short:        "Run Github actions locally by specifying the event name (e.g. `push`) or an action name directly.",
+		Args:         cobra.MaximumNArgs(1),
+		RunE:         newRunAction(ctx),
+		Version:      version,
+		SilenceUsage: true,
+	}
+	rootCmd.Flags().BoolVarP(&list, "list", "l", false, "list actions")
+	rootCmd.Flags().StringVarP(&actionName, "action", "a", "", "run action")
+	rootCmd.PersistentFlags().BoolVarP(&dryrun, "dryrun", "n", false, "dryrun mode")
+	rootCmd.PersistentFlags().BoolVarP(&verbose, "verbose", "v", false, "verbose output")
+	rootCmd.PersistentFlags().StringVarP(&workflowPath, "file", "f", "./.github/main.workflow", "path to workflow file")
+	rootCmd.PersistentFlags().StringVarP(&workingDir, "directory", "C", ".", "working directory")
+	if err := rootCmd.Execute(); err != nil {
+		os.Exit(1)
+	}
+
+}
+
+func newRunAction(ctx context.Context) func(*cobra.Command, []string) error {
+	return func(cmd *cobra.Command, args []string) error {
+		if verbose {
+			log.SetLevel(log.DebugLevel)
+		}
+
+		workflows, err := actions.ParseWorkflows(workingDir, workflowPath)
+		if err != nil {
+			return err
+		}
+
+		defer workflows.Close()
+
+		if list {
+			return listEvents(workflows)
+		}
+
+		if actionName != "" {
+			return workflows.RunAction(ctx, dryrun, actionName)
+		}
+
+		if len(args) == 0 {
+			return workflows.RunEvent(ctx, dryrun, "push")
+		}
+		return workflows.RunEvent(ctx, dryrun, args[0])
+	}
+}
+
+func listEvents(workflows actions.Workflows) error {
+	eventNames := workflows.ListEvents()
+	for _, eventName := range eventNames {
+		graph, err := workflows.GraphEvent(eventName)
+		if err != nil {
+			return err
+		}
+
+		drawings := make([]*common.Drawing, 0)
+		eventPen := common.NewPen(common.StyleDoubleLine, 91 /*34*/)
+
+		drawings = append(drawings, eventPen.DrawBoxes(fmt.Sprintf("EVENT: %s", eventName)))
+
+		actionPen := common.NewPen(common.StyleSingleLine, 96)
+		arrowPen := common.NewPen(common.StyleNoLine, 97)
+		drawings = append(drawings, arrowPen.DrawArrow())
+		for i, stage := range graph {
+			if i > 0 {
+				drawings = append(drawings, arrowPen.DrawArrow())
+			}
+			drawings = append(drawings, actionPen.DrawBoxes(stage...))
+		}
+
+		maxWidth := 0
+		for _, d := range drawings {
+			if d.GetWidth() > maxWidth {
+				maxWidth = d.GetWidth()
+			}
+		}
+
+		for _, d := range drawings {
+			d.Draw(os.Stdout, maxWidth)
+		}
+	}
+	return nil
+}