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  1.  
  2. #define RAND() ((unsigned int)((rand() & 0xff) | ((rand() & 0xff) << 8) | ((rand() & 0xff) << 16) | ((rand() & 0xff) << 24)))
  3. #define GIGA               (uint64_t)((uint64_t)0x400*(uint64_t)0x400*(uint64_t)0x400)
  4. #define MAX_LENGTH_SECTION 0x1f
  5. #define MAX_LENGTH_TEXT    0x7f
  6. #define MAX_LENGTH_BUF     0xff
  7.  
  8. static char const* asz_mon[12] = {
  9. "Jan","Feb","Mar","Apr","May","Jun",
  10. "Jul","Aug","Sep","Oct","Nov","Dec"};
  11.  
  12. static char* gen_string1(char* sz_string, size_t u_length) {
  13.  
  14. 	unsigned char* psz_string = (unsigned char*)sz_string;
  15. 	unsigned char* psz_string_end = (unsigned char*)sz_string + u_length;
  16.  
  17. 	for (; psz_string < psz_string_end; ++psz_string) {
  18. 		*psz_string = 0x21 + (RAND() % 94);
  19. 	}
  20.  
  21. 	*psz_string = '\0';
  22. 	return sz_string;
  23. }
  24.  
  25. static char* gen_string2(char* sz_string, size_t u_length) {
  26.  
  27. 	unsigned char c;
  28. 	char* psz_string = sz_string;
  29. 	char* psz_string_end = sz_string + u_length;
  30.  
  31. 	for (; psz_string < psz_string_end; ++psz_string) {
  32. 		c = RAND() % 52;
  33. 		if (c < 26) {
  34. 			*psz_string = 'A' + c;
  35. 		} else {
  36. 			*psz_string = 'a' + (c -26);
  37. 		}
  38. 	}
  39.  
  40. 	*psz_string = '\0';
  41. 	return sz_string;
  42. }
  43.  
  44. int gen_data(FILE* fp, size_t u_GiB) {
  45.  
  46. 	char sz_buf[MAX_LENGTH_BUF+1];
  47.  
  48. 	unsigned int u_string_recs;
  49. 	unsigned int u_hatena;
  50. 	unsigned int u_xy_recs;
  51. 	unsigned int u_num_recs;
  52. 	char x_or_y;
  53. 	uint64_t u_pos;
  54.  
  55. 	time_t u_time = time(NULL);
  56. 	tm*    pt_tm = ::localtime(&u_time);
  57. 	char sz_timestamp[0x20];
  58. 	::sprintf(sz_timestamp, "%s %.2d %02d:%02d:%02d %d", asz_mon[pt_tm->tm_mon], pt_tm->tm_mday, pt_tm->tm_hour, pt_tm->tm_min, pt_tm->tm_sec, pt_tm->tm_year+1900);
  59.  
  60. 	char sz_qq_buf[MAX_LENGTH_BUF+0x40+1];
  61.  
  62. 	// タイトル、倍率(mag)。(この係数を使って④の数値から割る、正の整数。unsigned int)
  63. 	::srand((unsigned int)time(NULL));
  64. 	::fprintf(fp, "%s %u\x0a", gen_string2(sz_buf, 1 + (RAND() % MAX_LENGTH_SECTION)), RAND());
  65.  
  66. 	for (;;) {
  67. 		// ①ｾｸｼｮﾝ名
  68. 		// ex. SECTION_NAME　①
  69. 		::fprintf(fp, "%s\x0a", gen_string2(sz_buf, 1 + (RAND() % MAX_LENGTH_SECTION)));
  70.  
  71. 		// ②ｾｸｼｮﾝ集計値
  72. 		// ex. 11200 11200 2 Jun  9 23:23:00 2018　②
  73. //		u_xy_recs = RAND() % 0x8000000 + 1;
  74. 		u_xy_recs = RAND() % 0x8000 + 1;
  75. 		u_hatena  = u_xy_recs;
  76. 		u_string_recs = RAND() % 0x20 + 1;
  77.  
  78. 		::fprintf(fp, "%u %u %u %s\x0a", u_xy_recs, u_hatena, u_string_recs, sz_timestamp);
  79.  
  80. 		// ③ﾃｷｽﾄ
  81. 		// ex. This is pen.　③
  82. 		//     hello world.　③
  83. 		for (unsigned int j = 0; j < u_string_recs; ++j) {
  84. 			::fprintf(fp, "%s\x0a", gen_string1(sz_buf, 1 + (RAND() % MAX_LENGTH_TEXT)));
  85. 		}
  86.  
  87. 		// ④数値
  88. 		// ex. x 1 2　④
  89. 		for (unsigned int j = 0; j < u_xy_recs; ++j) {
  90. 			x_or_y = (RAND() % 2) ? 'x' : 'y';
  91. //			u_num_recs = RAND() % 0x400 + 1;
  92. 			u_num_recs = RAND() % 0x100 + 1;
  93.  
  94. 			switch (RAND() % 3) {
  95.  
  96. 				case 0:
  97. 					// ⑤QQ 謎の行
  98. 					// QQ subname -1 0 0 1 -21000000 600000 2
  99. 					// →この行が無いファイルもある。
  100. 					// →7,8カラムは1行目の倍率数字で割る（数値行と同じ計算）
  101. 					// →3～6カラムは -1, 0, 1, のいずれか。この4つの組み合わせであとで計算に使うことがある。
  102. 					// 1 0 0 1 →TYPE_A
  103. 					// 0 1 -1 0 →TYPE_B
  104. 					// -1 0 0 -1 →TYPE_C
  105. 					// 0 -1 1 0 →TYPE_D
  106. 					// -1 0 0 1 →TYPE_E
  107. 					// 0 -1 -1 0 →TYPE_F
  108. 					// 1 0 0 -1 →TYPE_G
  109. 					// 0 1 1 0 →TYPE_H
  110. 					// →9カラム目は正の整数。(unsigned int)
  111. 					// →下記6つのバリエーションがあります。
  112. 					// QQ subname
  113. 					// QQ subname c
  114. 					// QQ subname -1 0 0 1 -21000000 600000
  115. 					// QQ subname -1 0 0 1 -21000000 600000 2
  116. 					// QQ subname c -1 0 0 1 -21000000 600000
  117. 					// QQ subname c -1 0 0 1 -21000000 600000 2
  118. 					// ※cはcという文字列固定
  119. 					// ※1つのファイルに存在するのはいずれか1つのフォーマット
  120. 					switch (RAND() % 3) {
  121. 						case 0:
  122. 							::sprintf(sz_qq_buf, "%s",
  123. 							RAND() % 2 ? " c" : "");
  124. 							break;
  125. 						case 1:
  126. 							::sprintf(sz_qq_buf, "%s %d %d %d %d %d %d",
  127. 							RAND() % 2 ? " c" : "",
  128. 							(int)(RAND() % 3) - 1, (int)(RAND() % 3) - 1, (int)(RAND() % 3) - 1, (int)(RAND() % 3) - 1,
  129. 							(int32_t)RAND(), (int32_t)RAND());
  130. 							break;
  131. 						default:
  132. 							::sprintf(sz_qq_buf, "%s %d %d %d %d %d %d %u",
  133. 							RAND() % 2 ? " c" : "",
  134. 							(int)(RAND() % 3) - 1, (int)(RAND() % 3) - 1, (int)(RAND() % 3) - 1, (int)(RAND() % 3) - 1,
  135. 							(int32_t)RAND(), (int32_t)RAND(), RAND());
  136. 							break;
  137. 					}
  138. 					// 上記QQ行は先頭のQQがなくなってx, y行に存在することがあります。
  139. 					// 1つのファイル内でQQ行とx, yの後ろにくるパターンの両方は存在せず、片方が出てきたらもう片方は出てきません。
  140. 					// x, yと同じ行にくる場合のフォーマットもQQ行の規則と同じです。
  141. 					// x 1 234 subname -1 0 0 1 -21000000 600000 2
  142. 					// y 2 234 subname -1 0 0 1 -21000000 600000 2
  143. 					if (RAND() % 2) {
  144. 						::fprintf(fp, "%c %u %u%s\x0a", x_or_y, j + 1, u_num_recs, sz_qq_buf);
  145. 					} else {
  146. 						::fprintf(fp, "%c %u %u\x0a", x_or_y, j + 1, u_num_recs);
  147. 						::fprintf(fp, "QQ %s%s\x0a", gen_string2(sz_buf, 1 + (RAND() % MAX_LENGTH_SECTION)), sz_qq_buf);
  148. 					}
  149. 					break;
  150.  
  151. 				case 1:
  152. 					// RR行があります。
  153. 					// これもQQ同様x, yの次の行にあったりなかったりします。
  154. 					// QQとRRが一緒に出てくることは無いと思います。
  155. 					// フォーマットは「RR 正の整数」でQQのようにx,yの後ろに来ることはありません。
  156. 					::fprintf(fp, "%c %u %u\x0a", x_or_y, j + 1, u_num_recs);
  157. 					::fprintf(fp, "RR %u\x0a", RAND());
  158. 					break;
  159.  
  160. 				default:
  161. 					::fprintf(fp, "%c %u %u\x0a", x_or_y, j + 1, u_num_recs);
  162. 					break;
  163. 			}
  164.  
  165. 			if (x_or_y == 'x') {
  166. 				for (unsigned int k = 0; k < u_num_recs; ++k) {
  167. 					// 100 1 -2000 10
  168. 					::fprintf(fp, "%d %d %d %d\x0a",
  169. 						(int32_t)RAND(), (int32_t)RAND(), (int32_t)RAND(), (int32_t)RAND());
  170. 				}
  171. 			} else {
  172. 				for (unsigned int k = 0; k < u_num_recs; ++k) {
  173. 					// -100 10000
  174. 					::fprintf(fp, "%d %d\x0a",
  175. 						(int32_t)RAND(), (int32_t)RAND());
  176. 				}
  177. 			}
  178. 		}
  179.  
  180. 		u_pos = ftello(fp);
  181.  
  182. 		if (u_pos > GIGA * (uint64_t)u_GiB) {
  183. 			break;
  184. 		}
  185. 	}
  186.  
  187. 	return 0;
  188. }
  189.  
  190. int main(int argc, char** argv) {
  191.  
  192. 	if (argc != 3) {
  193. 		::fprintf(stderr, "Usage: %s <filepath> <GiB size>\n", argv[0]);
  194. 		return 1;
  195. 	}
  196.  
  197. 	char* filename = argv[1];
  198. 	size_t u_GiB = ::strtoul(argv[2], NULL, 10);;
  199.  
  200. 	if (u_GiB == 0) {
  201. 		::fprintf(stderr, "Usage: %s <filepath> <GiB size>\n", argv[0]);
  202. 		::fprintf(stderr, "<GiB size> must be greater than zero\n");
  203. 		return 1;
  204. 	}
  205.  
  206. 	FILE* fp = ::fopen(filename, "wb");
  207. 	if (fp == NULL) {
  208. 		::fprintf(stderr, "fatal error: open file error \"%s\"\n", filename);
  209. 		return 1;
  210. 	}
  211.  
  212. 	if (::gen_data(fp, u_GiB) < 0) {fclose(fp); return -1;}
  213. 	fclose(fp);
  214. 	return 0;
  215. }
  216.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.cpp:12:43: error: ‘size_t’ has not been declared
 static char* gen_string1(char* sz_string, size_t u_length) {
                                           ^~~~~~
prog.cpp: In function ‘char* gen_string1(char*, int)’:
prog.cpp:2:38: error: ‘rand’ was not declared in this scope
 #define RAND() ((unsigned int)((rand() & 0xff) | ((rand() & 0xff) << 8) | ((rand() & 0xff) << 16) | ((rand() & 0xff) << 24)))
                                      ^
prog.cpp:18:25: note: in expansion of macro ‘RAND’
   *psz_string = 0x21 + (RAND() % 94);
                         ^~~~
prog.cpp: At global scope:
prog.cpp:25:43: error: ‘size_t’ has not been declared
 static char* gen_string2(char* sz_string, size_t u_length) {
                                           ^~~~~~
prog.cpp: In function ‘char* gen_string2(char*, int)’:
prog.cpp:2:38: error: ‘rand’ was not declared in this scope
 #define RAND() ((unsigned int)((rand() & 0xff) | ((rand() & 0xff) << 8) | ((rand() & 0xff) << 16) | ((rand() & 0xff) << 24)))
                                      ^
prog.cpp:32:7: note: in expansion of macro ‘RAND’
   c = RAND() % 52;
       ^~~~
prog.cpp: At global scope:
prog.cpp:44:14: error: ‘FILE’ was not declared in this scope
 int gen_data(FILE* fp, size_t u_GiB) {
              ^~~~
prog.cpp:44:20: error: ‘fp’ was not declared in this scope
 int gen_data(FILE* fp, size_t u_GiB) {
                    ^~
prog.cpp:44:24: error: ‘size_t’ was not declared in this scope
 int gen_data(FILE* fp, size_t u_GiB) {
                        ^~~~~~
prog.cpp:44:36: error: expression list treated as compound expression in initializer [-fpermissive]
 int gen_data(FILE* fp, size_t u_GiB) {
                                    ^
stdout
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Standard output is empty
https://ideone.com/NWdMmL
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
public

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