exclude initial commit

cmd/add.go

@@ -0,0 +1,41 @@
+package cmd
+
+import (
+	"fmt"
+	"io"
+
+	"github.com/spf13/cobra"
+)
+
+// addCmd represents the add command
+var addCmd = &cobra.Command{
+	Use:   "add",
+	Short: "Add patterns to the exclude file",
+	Long: `The add command allows you to add one or more patterns to the .git/info/exclude file.
+This is useful for excluding files or directories from version control without modifying the .gitignore file.`,
+	Args: cobra.MinimumNArgs(1),
+	RunE: func(cmd *cobra.Command, args []string) error {
+		f, ok := FileFromContext(cmd.Context())
+		if !ok {
+			return fmt.Errorf("no exclude file found in context")
+		}
+		return runAddCommand(f, args)
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(addCmd)
+}
+
+func runAddCommand(f io.Writer, args []string) error {
+	for _, pattern := range args {
+		if _, err := fmt.Fprintln(f, pattern); err != nil {
+			return fmt.Errorf("error writing to exclude file: %w", err)
+		}
+	}
+	fmt.Println("Patterns added to .git/info/exclude file:")
+	for _, pattern := range args {
+		fmt.Println(" -", pattern)
+	}
+	return nil
+}

cmd/context.go

@@ -0,0 +1,21 @@
+package cmd
+
+import (
+	"context"
+	"os"
+)
+
+type contextKey string
+
+const fileContextKey contextKey = "excludeFile"
+
+// ContextWithFile returns a new context with the given file set.
+func ContextWithFile(ctx context.Context, file *os.File) context.Context {
+	return context.WithValue(ctx, fileContextKey, file)
+}
+
+// FileFromContext retrieves the file from the context, if it exists.
+func FileFromContext(ctx context.Context) (*os.File, bool) {
+	file, ok := ctx.Value(fileContextKey).(*os.File)
+	return file, ok
+}

cmd/list.go

@@ -0,0 +1,59 @@
+package cmd
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"strings"
+
+	"github.com/spf13/cobra"
+)
+
+// listCmd represents the list command
+var listCmd = &cobra.Command{
+	Use:   "list",
+	Short: "List all patterns in the exclude file",
+	Long: `The list command reads the .git/info/exclude file and prints all patterns
+that are not empty and do not start with a comment (#).
+This is useful for reviewing which files or directories are currently excluded from version control.`,
+	Args: cobra.NoArgs, // No arguments expected
+	RunE: func(cmd *cobra.Command, args []string) error {
+		f, ok := FileFromContext(cmd.Context())
+		if !ok {
+			return fmt.Errorf("no exclude file found in context")
+		}
+		return runListCommand(f, args)
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(listCmd)
+
+	// Here you will define your flags and configuration settings.
+
+	// Cobra supports Persistent Flags which will work for this command
+	// and all subcommands, e.g.:
+	// listCmd.PersistentFlags().String("foo", "", "A help for foo")
+
+	// Cobra supports local flags which will only run when this command
+	// is called directly, e.g.:
+	// listCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+}
+
+// runListCommand is the function that will be executed when the list command is called
+func runListCommand(f io.Reader, _ []string) error {
+	// Read from the exclude file line by line
+	scanner := bufio.NewScanner(f)
+	for scanner.Scan() {
+		line := scanner.Text()
+		if line != "" && !strings.HasPrefix(line, "#") {
+			fmt.Println(line) // Print each non-empty, non-comment line
+		}
+	}
+	if err := scanner.Err(); err != nil {
+		return fmt.Errorf("error reading exclude file: %w", err)
+	}
+
+	// You can add more functionality as needed
+	return nil
+}

cmd/reset.go

@@ -0,0 +1,50 @@
+package cmd
+
+import (
+	_ "embed"
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+)
+
+// resetCmd represents the reset command
+var resetCmd = &cobra.Command{
+	Use:   "reset",
+	Short: "Reset the exclude file",
+	Long: `The reset command clears all patterns from the .git/info/exclude file.
+This is useful for starting fresh or removing all exclusions at once.`,
+	RunE: func(cmd *cobra.Command, _ []string) error {
+		f, ok := FileFromContext(cmd.Context())
+		if !ok {
+			return fmt.Errorf("no exclude file found in context")
+		}
+		return runResetCommand(f)
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(resetCmd)
+}
+
+//go:embed template/exclude
+var defaultExcludeFile string
+
+// runResetCommand clears the exclude file
+func runResetCommand(f *os.File) error {
+	// Clear the exclude file by truncating it
+	if err := f.Truncate(0); err != nil {
+		return fmt.Errorf("error truncating exclude file: %w", err)
+	}
+	// Reset the file pointer to the beginning
+	if _, err := f.Seek(0, 0); err != nil {
+		return fmt.Errorf("error seeking to the beginning of exclude file: %w", err)
+	}
+
+	// Write the default exclude patterns to the file
+	if _, err := f.WriteString(defaultExcludeFile); err != nil {
+		return fmt.Errorf("error writing default exclude file: %w", err)
+	}
+
+	return nil
+}

cmd/root.go

@@ -0,0 +1,65 @@
+package cmd
+
+import (
+	"context"
+	"os"
+
+	"github.com/spf13/cobra"
+)
+
+// rootCmd represents the base command when called without any subcommands
+var rootCmd = &cobra.Command{
+	Use:   "exclude",
+	Short: "A command line tool to manage .git/info/exclude files",
+	Long: `Exclude is a command line tool designed to help you manage your .git/info/exclude files.
+It allows you to add, list, and remove patterns from the exclude file easily.
+This tool is particularly useful for developers who want to keep their repository clean 
+by excluding certain files or directories from version control.`,
+	PersistentPreRun: func(cmd *cobra.Command, args []string) {
+		// This function runs before any command is executed.
+		// You can use it to set up global configurations or checks.
+		// For example, you might want to check if the .git directory exists
+		if _, err := os.Stat(".git"); os.IsNotExist(err) {
+			cmd.Println("Error: This command must be run in a Git repository.")
+			os.Exit(1)
+		}
+
+		f, err := os.OpenFile(".git/info/exclude", os.O_RDWR|os.O_CREATE|os.O_APPEND, 0644)
+		if err != nil {
+			cmd.Println("Error opening .git/info/exclude file:", err)
+			os.Exit(1)
+		}
+
+		ctx := context.WithValue(context.Background(), fileContextKey, f)
+		cmd.SetContext(ctx)
+	},
+	PersistentPostRun: func(cmd *cobra.Command, args []string) {
+		if f, ok := FileFromContext(cmd.Context()); ok {
+			defer f.Close()
+		}
+	},
+	// Uncomment the following line if your bare application
+	// has an action associated with it:
+	// Run: func(cmd *cobra.Command, args []string) { },
+}
+
+// Execute adds all child commands to the root command and sets flags appropriately.
+// This is called by main.main(). It only needs to happen once to the rootCmd.
+func Execute() {
+	err := rootCmd.Execute()
+	if err != nil {
+		os.Exit(1)
+	}
+}
+
+func init() {
+	// Here you will define your flags and configuration settings.
+	// Cobra supports persistent flags, which, if defined here,
+	// will be global for your application.
+
+	// rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.exclude.yaml)")
+
+	// Cobra also supports local flags, which will only run
+	// when this action is called directly.
+	// rootCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+}

cmd/template/exclude

@@ -0,0 +1,6 @@
+# git ls-files --others --exclude-from=.git/info/exclude
+# Lines that start with '#' are comments.
+# For a project mostly in C, the following would be a good set of
+# exclude patterns (uncomment them if you want to use them):
+# *.[oa]
+# *~