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  1. package main
  2.  
  3. import (
  4. 	"fmt"
  5. 	"regexp"
  6. 	"strconv"
  7. 	"strings"
  8. )
  9.  
  10. func indentMixCo(s string) (string, error) {
  11. 	pairs := map[string]string{
  12. 		"FOR": "NEXT",
  13. 		"IF":  "ENDIF",
  14. 	}
  15. 	level := 0
  16. 	lines := strings.Split(s, "\n")
  17. 	length, _ := strconv.Atoi(lines[0])
  18. 	spaces := strings.Trim(lines[1], "\n")
  19. 	lines = lines[2:]
  20. 	var stack []string
  21. 	var removed []string
  22. 	indented := false
  23. 	for i := 0; i < length; i++ {
  24. 		lines[i] = strings.TrimLeft(lines[i], "·»\t")
  25. 		for key, val := range pairs {
  26. 			rOpen, _ := regexp.Compile(fmt.Sprintf(`^%v($|\s)`, key))
  27. 			if rOpen.MatchString(lines[i]) {
  28. 				lines[i] = strings.Repeat(spaces, level) + lines[i]
  29. 				level++
  30. 				stack = append(stack, key)
  31. 				indented = true
  32. 			}
  33. 			rClose, _ := regexp.Compile(fmt.Sprintf(`^%v($|\s)`, val))
  34. 			if rClose.MatchString(lines[i]) {
  35. 				level--
  36. 				lines[i] = strings.Repeat(spaces, level) + lines[i]
  37. 				removed, stack = stack[len(stack)-1:], stack[:len(stack)-1]
  38. 				indented = true
  39. 				if removed[0] != key {
  40. 					return strings.Join(lines, "\n"), fmt.Errorf("error: %v found on line %v but was looking for %v", val, i+1, pairs[removed[0]])
  41. 				}
  42. 			}
  43. 		}
  44. 		if !indented {
  45. 			lines[i] = strings.Repeat(spaces, level) + lines[i]
  46. 		} else {
  47. 			indented = false
  48. 		}
  49. 	}
  50. 	return strings.Join(lines, "\n"), nil
  51. }
  52.  
  53. func main() {
  54. 	input := `12
  55. ····
  56. VAR I
  57. ·FOR I=1 TO 31
  58. »»»»IF !(I MOD 3) THEN
  59. ··PRINT "FIZZ"
  60. ··»»ENDIF
  61. »»»»····IF !(I MOD 5) THEN
  62. »»»»··PRINT "BUZZ"
  63. ··»»»»»»ENDIF
  64. »»»»IF (I MOD 3) && (I MOD 5) THEN
  65. ······PRINT "FIZZBUZZ"
  66. ··»»ENDIF
  67. »»»»·NEXT`
  68.  
  69. 	properFormat, err := indentMixCo(input)
  70. 	if err != nil {
  71. 		fmt.Println(err)
  72. 		fmt.Println(properFormat)
  73. 	} else {
  74. 		fmt.Println(properFormat)
  75. 	}
  76. }
  77.  
Success #stdin #stdout 0s 790016KB
comments ()
stdin 
Standard input is empty
stdout 
VAR I
FOR I=1 TO 31
····IF !(I MOD 3) THEN
········PRINT "FIZZ"
····ENDIF
····IF !(I MOD 5) THEN
········PRINT "BUZZ"
····ENDIF
····IF (I MOD 3) && (I MOD 5) THEN
········PRINT "FIZZBUZZ"
····ENDIF
NEXT
https://ideone.com/uqGm59
language:
Go (go 1.12.1)
created:
8 years ago
visibility:
public

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