fork download
copy 
  1. #include <stdio.h>
  2.  
  3. /* UTF8の次の文字をoutに格納し、そのバイト数を返す。
  4.  * 不正バイト列のチェックは行わない。
  5.  * (bufの先頭がナル文字でなければ)outにナル文字は格納しない。
  6.  */
  7. int get_next_utf8_char(char *out, const char *buf) {
  8. 	int bytes = 1;
  9. 	int i;
  10. 	if ((buf[0] & 0x80) == 0x00) {
  11. 		bytes = 1;
  12. 	} else {
  13. 		int now_mask = 0xE0;
  14. 		int now_puttern = 0xC0;
  15. 		for (i = 2; i <= 6; i++) {
  16. 			if ((buf[0] & now_mask) == now_puttern) {
  17. 				bytes = i;
  18. 				break;
  19. 			}
  20. 			now_mask = (now_mask >> 1) | 0x80;
  21. 			now_puttern = (now_puttern >> 1) | 0x80;
  22. 		}
  23. 	}
  24. 	for (i = 0; i < bytes; i++) out[i] = buf[i];
  25. 	return bytes;
  26. }
  27.  
  28. void split_string(const char *input, char *mess1, char *mess2, int length) {
  29. 	int i;
  30. 	for (i = 0; *input != '\0' && i < length; i++) {
  31. 		int length = get_next_utf8_char(mess1, input);
  32. 		mess1 += length;
  33. 		input += length;
  34. 	}
  35. 	*mess1 = '\0';
  36.  
  37. 	while (*input != '\0') {
  38. 		int length = get_next_utf8_char(mess2, input);
  39. 		mess2 += length;
  40. 		input += length;
  41. 	}
  42. 	*mess2 = '\0';
  43. }
  44.  
  45. int main(void) {
  46. 	const int sample_length[] = {0, 5, 7, 11, 12, 30, -1};
  47. 	const char* samples[] = {
  48. 		"123456789１０１１１２１３１４",
  49. 		"Cat「にゃーん!!」",
  50. 		"𦥑𦥑𦥑𦥑𦥑Cafè du Lapin𦣪𦣪𦣪𦣪𦣪",
  51. 		NULL
  52. 	};
  53. 	char mess1[100], mess2[100];
  54. 	int i, j;
  55.  
  56. 	for (i = 0; sample_length[i] >= 0; i++) {
  57. 		printf("length = %d\n", sample_length[i]);
  58. 		for (j = 0; samples[j] != NULL; j++) {
  59. 			split_string(samples[j], mess1, mess2, sample_length[i]);
  60. 			printf("(input, mess1, mess2) = (\"%s\", \"%s\", \"%s\")\n",
  61. 				samples[j], mess1, mess2);
  62. 		}
  63. 	}
  64. 	return 0;
  65. }
  66.  
Success #stdin #stdout 0s 2292KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
length = 0
(input, mess1, mess2) = ("123456789１０１１１２１３１４", "", "123456789１０１１１２１３１４")
(input, mess1, mess2) = ("Cat「にゃーん!!」", "", "Cat「にゃーん!!」")
(input, mess1, mess2) = ("𦥑𦥑𦥑𦥑𦥑Cafè du Lapin𦣪𦣪𦣪𦣪𦣪", "", "𦥑𦥑𦥑𦥑𦥑Cafè du Lapin𦣪𦣪𦣪𦣪𦣪")
length = 5
(input, mess1, mess2) = ("123456789１０１１１２１３１４", "12345", "6789１０１１１２１３１４")
(input, mess1, mess2) = ("Cat「にゃーん!!」", "Cat「に", "ゃーん!!」")
(input, mess1, mess2) = ("𦥑𦥑𦥑𦥑𦥑Cafè du Lapin𦣪𦣪𦣪𦣪𦣪", "𦥑𦥑𦥑𦥑𦥑", "Cafè du Lapin𦣪𦣪𦣪𦣪𦣪")
length = 7
(input, mess1, mess2) = ("123456789１０１１１２１３１４", "1234567", "89１０１１１２１３１４")
(input, mess1, mess2) = ("Cat「にゃーん!!」", "Cat「にゃー", "ん!!」")
(input, mess1, mess2) = ("𦥑𦥑𦥑𦥑𦥑Cafè du Lapin𦣪𦣪𦣪𦣪𦣪", "𦥑𦥑𦥑𦥑𦥑Ca", "fè du Lapin𦣪𦣪𦣪𦣪𦣪")
length = 11
(input, mess1, mess2) = ("123456789１０１１１２１３１４", "123456789１０", "１１１２１３１４")
(input, mess1, mess2) = ("Cat「にゃーん!!」", "Cat「にゃーん!!」", "")
(input, mess1, mess2) = ("𦥑𦥑𦥑𦥑𦥑Cafè du Lapin𦣪𦣪𦣪𦣪𦣪", "𦥑𦥑𦥑𦥑𦥑Cafè ", "du Lapin𦣪𦣪𦣪𦣪𦣪")
length = 12
(input, mess1, mess2) = ("123456789１０１１１２１３１４", "123456789１０１", "１１２１３１４")
(input, mess1, mess2) = ("Cat「にゃーん!!」", "Cat「にゃーん!!」", "")
(input, mess1, mess2) = ("𦥑𦥑𦥑𦥑𦥑Cafè du Lapin𦣪𦣪𦣪𦣪𦣪", "𦥑𦥑𦥑𦥑𦥑Cafè d", "u Lapin𦣪𦣪𦣪𦣪𦣪")
length = 30
(input, mess1, mess2) = ("123456789１０１１１２１３１４", "123456789１０１１１２１３１４", "")
(input, mess1, mess2) = ("Cat「にゃーん!!」", "Cat「にゃーん!!」", "")
(input, mess1, mess2) = ("𦥑𦥑𦥑𦥑𦥑Cafè du Lapin𦣪𦣪𦣪𦣪𦣪", "𦥑𦥑𦥑𦥑𦥑Cafè du Lapin𦣪𦣪𦣪𦣪𦣪", "")
https://ideone.com/9kxjXZ
language:
C (gcc 8.3)
created:
9 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!