cobra init

cmd/root.go

@@ -0,0 +1,25 @@
+package cmd
+
+import (
+	"os"
+
+	"github.com/spf13/cobra"
+)
+
+var rootCmd = &cobra.Command{
+	Use:   "intake",
+	Short: "Universal and extensible feed aggregator",
+	Long:  `intake, the universal and extensible feed aggregator`,
+}
+
+func Execute() {
+	err := rootCmd.Execute()
+	if err != nil {
+		os.Exit(1)
+	}
+}
+
+func init() {
+	// Disable the automatic help command
+	rootCmd.SetHelpCommand(&cobra.Command{Hidden: true})
+}

cmd/update.go

@@ -0,0 +1,69 @@
+package cmd
+
+import (
+	"bufio"
+	"fmt"
+	"os/exec"
+	"strings"
+
+	"github.com/spf13/cobra"
+)
+
+var updateCmd = &cobra.Command{
+	Use:   "update",
+	Short: "Fetch items for a source and update it",
+	Long: `Fetch items from a feed source using the configured "fetch" action.
+Items returned by a successful fetch will be used to update the source.
+No changes will be made to the source if the fetch does not succeed.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		update()
+	},
+}
+
+var source string
+var dryRun bool
+
+func init() {
+	rootCmd.AddCommand(updateCmd)
+
+	updateCmd.Flags().StringVarP(&source, "source", "s", "", "Source name to fetch (required)")
+	updateCmd.MarkFlagRequired("source")
+
+	updateCmd.Flags().BoolVar(&dryRun, "dry-run", false, "Instead of updating the source, print the fetched items")
+}
+
+func update() {
+	fmt.Printf("Hello %s\n", source)
+
+	if dryRun {
+		return
+	}
+
+	cmd := exec.Command("sh", "-c", "echo Wout; sleep 1; echo 1>&2 Werr; sleep 1; echo Wout2; sleep 1; echo 1>&2 Werr2")
+	stdout, _ := cmd.StdoutPipe()
+	stderr, _ := cmd.StderrPipe()
+
+	cout := make(chan int)
+	go func() {
+		scanout := bufio.NewScanner(stdout)
+		for scanout.Scan() {
+			text := strings.TrimSpace(scanout.Text())
+			fmt.Printf("[stdout] %s\n", text)
+		}
+		cout <- 1
+	}()
+
+	cerr := make(chan int)
+	go func() {
+		scanerr := bufio.NewScanner(stderr)
+		for scanerr.Scan() {
+			text := strings.TrimSpace(scanerr.Text())
+			fmt.Printf("[stderr] %s\n", text)
+		}
+		cerr <- 1
+	}()
+
+	cmd.Start()
+	<-cout
+	<-cerr
+}

flake.nix

@@ -29,6 +29,7 @@
               pkgs.gopls
               pkgs.go-tools
               pkgs.gotools
+              pkgs.cobra-cli
             ];
           };
         };

go.mod

@@ -1,3 +1,10 @@
 module github.com/Jaculabilis/intake
 
 go 1.23.4
+
+require github.com/spf13/cobra v1.8.1
+
+require (
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+)

go.sum

@@ -0,0 +1,10 @@
+github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
+github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
+github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
+github.com/spf13/cobra v1.8.1 h1:e5/vxKd/rZsfSJMUX1agtjeTDf+qv1/JdBF8gg5k9ZM=
+github.com/spf13/cobra v1.8.1/go.mod h1:wHxEcudfqmLYa8iTfL+OuZPbBZkmvliBWKIezN3kD9Y=
+github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
+github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

main.go

@@ -1,40 +1,7 @@
 package main
 
-import (
-	"bufio"
-	"fmt"
-	"os/exec"
-	"strings"
-)
+import "github.com/Jaculabilis/intake/cmd"
 
 func main() {
-	fmt.Printf("Hello\n")
-
-	cmd := exec.Command("sh", "-c", "echo Wout; sleep 1; echo 1>&2 Werr; sleep 1; echo Wout2; sleep 1; echo 1>&2 Werr2")
-	stdout, _ := cmd.StdoutPipe()
-	stderr, _ := cmd.StderrPipe()
-
-	cout := make(chan int)
-	go func() {
-		scanout := bufio.NewScanner(stdout)
-		for scanout.Scan() {
-			text := strings.TrimSpace(scanout.Text())
-			fmt.Printf("[stdout] %s\n", text)
-		}
-		cout <- 1
-	}()
-
-	cerr := make(chan int)
-	go func() {
-		scanerr := bufio.NewScanner(stderr)
-		for scanerr.Scan() {
-			text := strings.TrimSpace(scanerr.Text())
-			fmt.Printf("[stderr] %s\n", text)
-		}
-		cerr <- 1
-	}()
-
-	cmd.Start()
-	<-cout
-	<-cerr
+	cmd.Execute()
 }