init ctx

main.go

@@ -0,0 +1,81 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"path/filepath"
+	"time"
+)
+
+const defaultOutputFilename = "ctx.txt"
+
+func main() {
+	if err := run(); err != nil {
+		fmt.Fprintf(os.Stderr, "ctx: %v\n", err)
+		os.Exit(1)
+	}
+}
+
+func run() error {
+	flag.Usage = usage
+	configFlag := flag.Bool("config", false, "open global ignore file for editing")
+	outputFlag := flag.String("o", defaultOutputFilename, "output filename")
+	flag.Parse()
+
+	if *configFlag {
+		return openConfigFile()
+	}
+
+	args := flag.Args()
+	if len(args) == 0 {
+		usage()
+		return nil
+	}
+
+	targetDir := args[0]
+	absPath, err := filepath.Abs(targetDir)
+	if err != nil {
+		return fmt.Errorf("resolving path: %w", err)
+	}
+
+	start := time.Now()
+
+	cfg, err := loadConfig()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "ctx: warning: could not load config, using defaults (%v)\n", err)
+		cfg = parseConfig(defaultIgnoreText)
+	}
+
+	scanner := NewScanner(absPath, cfg)
+	files, err := scanner.Scan()
+	if err != nil {
+		return fmt.Errorf("scanning directory: %w", err)
+	}
+
+	if len(files) == 0 {
+		return fmt.Errorf("no files found in %s", absPath)
+	}
+
+	tokenCount, err := writeOutput(absPath, files, *outputFlag)
+	if err != nil {
+		return fmt.Errorf("writing output: %w", err)
+	}
+
+	duration := time.Since(start).Round(time.Millisecond)
+	fmt.Printf("ctx: generated %s (%d files, ~%d tokens) in %v\n",
+		*outputFlag, len(files), tokenCount, duration)
+
+	return nil
+}
+
+func usage() {
+	fmt.Fprintf(os.Stderr, "Usage: ctx [options] <directory>\n\n")
+	fmt.Fprintf(os.Stderr, "Options:\n")
+	fmt.Fprintf(os.Stderr, "  -config      Open global ignore file for editing\n")
+	fmt.Fprintf(os.Stderr, "  -o <file>    Output filename (default %q)\n", defaultOutputFilename)
+	fmt.Fprintf(os.Stderr, "\nExamples:\n")
+	fmt.Fprintf(os.Stderr, "  ctx .                  # Generate context for current dir\n")
+	fmt.Fprintf(os.Stderr, "  ctx -o out.txt src/    # Scan src/ and save to out.txt\n")
+	fmt.Fprintf(os.Stderr, "  ctx -config            # Open global ignore file\n")
+}