feat: basalt 0.0.1

cmd/helpers.go

@@ -0,0 +1,100 @@
+package cmd
+
+import (
+	"bufio"
+	"crypto/rand"
+	"errors"
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"text/template"
+
+	"gitea.fernandovideira.com/FernandoJVideira/keystone/assets"
+)
+
+const (
+	chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_+"
+)
+
+func randomString(length int) string {
+	s, r := make([]rune, length), []rune(chars)
+
+	for i := range s {
+		p, _ := rand.Prime(rand.Reader, len(r))
+		x, y := p.Uint64(), uint64(len(r))
+		s[i] = r[x%y]
+	}
+	return string(s)
+}
+
+func genFile(tplPath, tplName, outputPath string, data any) error {
+	tplContent, err := assets.EmbedFS.ReadFile(tplPath)
+	if err != nil {
+		return fmt.Errorf("error reading %s template: %w", tplPath, err)
+	}
+
+	tpl, err := template.New(tplName).Parse(string(tplContent))
+	if err != nil {
+		return fmt.Errorf("error parsing %s template: %w", tplPath, err)
+	}
+
+	if err := os.MkdirAll(filepath.Dir(outputPath), 0o755); err != nil {
+		return fmt.Errorf("error ensuring directory for %s: %w", outputPath, err)
+	}
+
+	outFile, err := os.Create(outputPath)
+	if err != nil {
+		return fmt.Errorf("error creating %s: %w", outputPath, err)
+	}
+	defer outFile.Close()
+
+	return tpl.Execute(outFile, data)
+}
+
+func getModuleName() (string, error) {
+	dir, err := os.Getwd()
+	if err != nil {
+		return "", fmt.Errorf("failed to get working directory: %w", err)
+	}
+
+	for {
+		goModPath := filepath.Join(dir, "go.mod")
+		file, err := os.Open(goModPath)
+		if err == nil {
+			defer file.Close()
+
+			scanner := bufio.NewScanner(file)
+			for scanner.Scan() {
+				line := strings.TrimSpace(scanner.Text())
+				if str, ok := strings.CutPrefix(line, "module "); ok {
+					return strings.TrimSpace(str), nil
+				}
+			}
+			if err := scanner.Err(); err != nil {
+				return "", fmt.Errorf("failed to read %s: %w", goModPath, err)
+			}
+			return "", fmt.Errorf("module directive not found in %s", goModPath)
+		}
+
+		if !errors.Is(err, os.ErrNotExist) {
+			return "", fmt.Errorf("failed to open %s: %w", goModPath, err)
+		}
+
+		parent := filepath.Dir(dir)
+		if parent == dir {
+			return "", fmt.Errorf("go.mod not found starting from %s", dir)
+		}
+		dir = parent
+	}
+}
+
+func runCommand(dir, name string, args ...string) error {
+	cmd := exec.Command(name, args...)
+	cmd.Dir = dir
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+
+	return cmd.Run()
+}