Reorganize code into individual tool files

tool_list_packages.go

@@ -0,0 +1,81 @@
+package main
+
+import (
+	"go/ast"
+	"go/token"
+	"path/filepath"
+	"strings"
+)
+
+type Package struct {
+	ImportPath string   `json:"import_path"`
+	Name       string   `json:"name"`
+	Dir        string   `json:"dir"`
+	GoFiles    []string `json:"go_files"`
+	Imports    []string `json:"imports"`
+}
+
+func listPackages(dir string, includeTests bool) ([]Package, error) {
+	packages := make(map[string]*Package)
+
+	err := walkGoFiles(dir, func(path string, src []byte, file *ast.File, fset *token.FileSet) error {
+		// Skip test files if not requested
+		if !includeTests && strings.HasSuffix(path, "_test.go") {
+			return nil
+		}
+
+		pkgDir := filepath.Dir(path)
+		
+		// Initialize package if not seen before
+		if _, exists := packages[pkgDir]; !exists {
+			importPath := strings.TrimPrefix(pkgDir, dir)
+			importPath = strings.TrimPrefix(importPath, "/")
+			if importPath == "" {
+				importPath = "."
+			}
+
+			packages[pkgDir] = &Package{
+				ImportPath: importPath,
+				Name:       file.Name.Name,
+				Dir:        pkgDir,
+				GoFiles:    []string{},
+				Imports:    []string{},
+			}
+		}
+
+		// Add file to package
+		fileName := filepath.Base(path)
+		packages[pkgDir].GoFiles = append(packages[pkgDir].GoFiles, fileName)
+		
+		// Collect unique imports
+		imports := make(map[string]bool)
+		for _, imp := range file.Imports {
+			importPath := strings.Trim(imp.Path.Value, `"`)
+			imports[importPath] = true
+		}
+		
+		// Merge imports into package
+		existingImports := make(map[string]bool)
+		for _, imp := range packages[pkgDir].Imports {
+			existingImports[imp] = true
+		}
+		for imp := range imports {
+			if !existingImports[imp] {
+				packages[pkgDir].Imports = append(packages[pkgDir].Imports, imp)
+			}
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	var result []Package
+	for _, pkg := range packages {
+		result = append(result, *pkg)
+	}
+
+	return result, nil
+}