1. 1
2. 2
3. 3
4. 4
5. 5
6. 6
7. 7
8. 8
9. 9
10. 10
11. 11
12. 12
13. 13
14. 14
15. 15
16. 16
17. 17
18. 18
19. 19
20. 20
21. 21
22. 22
23. 23
24. 24
25. 25
26. 26
27. 27
28. 28
29. 29
30. 30
31. 31
32. 32
33. 33
34. 34
35. 35
36. 36
37. 37
38. 38
39. 39
40. 40
41. 41
42. 42
43. 43
44. 44
45. 45

package vfsgen

import "io"

// commentWriter writes a Go comment to the underlying io.Writer,
// using line comment form (//).
type commentWriter struct {
	W            io.Writer
	wroteSlashes bool // Wrote "//" at the beginning of the current line.
}

func (c *commentWriter) Write(p []byte) (int, error) {
	var n int
	for i, b := range p {
		if !c.wroteSlashes {
			s := "//"
			if b != '\n' {
				s = "// "
			}
			if _, err := io.WriteString(c.W, s); err != nil {
				return n, err
			}
			c.wroteSlashes = true
		}
		n0, err := c.W.Write(p[i : i+1])
		n += n0
		if err != nil {
			return n, err
		}
		if b == '\n' {
			c.wroteSlashes = false
		}
	}
	return len(p), nil
}

func (c *commentWriter) Close() error {
	if !c.wroteSlashes {
		if _, err := io.WriteString(c.W, "//"); err != nil {
			return err
		}
		c.wroteSlashes = true
	}
	return nil
}