error_code.cpp 16 KB

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  1. //Error_code是错误码的底层通用模块,
  2. //功能:用作故障分析和处理。
  3. //用法:所有的功能接口函数return错误管理类,
  4. //然后上层判断分析错误码,并进行故障处理。
  5. #include "error_code.h"
  6. /////////////////////////////////////////////
  7. //构造函数
  8. Error_manager::Error_manager()
  9. {
  10. m_error_code = SUCCESS;
  11. m_error_level = NORMAL;
  12. pm_error_description = 0;
  13. m_description_length = 0;
  14. return ;
  15. }
  16. //拷贝构造
  17. Error_manager::Error_manager(const Error_manager & error_manager)
  18. {
  19. this->m_error_code = error_manager.m_error_code;
  20. this->m_error_level = error_manager.m_error_level;
  21. pm_error_description = NULL;
  22. m_description_length = 0;
  23. reallocate_memory_and_copy_string(error_manager.pm_error_description, error_manager.m_description_length);
  24. return ;
  25. }
  26. //赋值构造
  27. Error_manager::Error_manager(Error_code error_code, Error_level error_level,
  28. const char* p_error_description, int description_length)
  29. {
  30. m_error_code = error_code;
  31. m_error_level = error_level;
  32. pm_error_description = NULL;
  33. m_description_length = 0;
  34. reallocate_memory_and_copy_string(p_error_description, description_length);
  35. return ;
  36. }
  37. //赋值构造
  38. Error_manager::Error_manager(Error_code error_code, Error_level error_level , std::string & error_aggregate_string)
  39. {
  40. m_error_code = error_code;
  41. m_error_level = error_level;
  42. pm_error_description = NULL;
  43. m_description_length = 0;
  44. reallocate_memory_and_copy_string(error_aggregate_string);
  45. return ;
  46. }
  47. //析构函数
  48. Error_manager::~Error_manager()
  49. {
  50. free_description();
  51. }
  52. //初始化
  53. void Error_manager::error_manager_init()
  54. {
  55. error_manager_clear_all();
  56. return;
  57. }
  58. //初始化
  59. void Error_manager::error_manager_init(Error_code error_code, Error_level error_level, const char* p_error_description, int description_length)
  60. {
  61. m_error_code = error_code;
  62. m_error_level = error_level;
  63. reallocate_memory_and_copy_string(p_error_description, description_length);
  64. return ;
  65. }
  66. //初始化
  67. void Error_manager::error_manager_init(Error_code error_code, Error_level error_level , std::string & error_aggregate_string)
  68. {
  69. m_error_code = error_code;
  70. m_error_level = error_level;
  71. reallocate_memory_and_copy_string(error_aggregate_string);
  72. return ;
  73. }
  74. //重置
  75. void Error_manager::error_manager_reset(Error_code error_code, Error_level error_level, const char* p_error_description, int description_length)
  76. {
  77. m_error_code = error_code;
  78. m_error_level = error_level;
  79. reallocate_memory_and_copy_string(p_error_description, description_length);
  80. return ;
  81. }
  82. //重置
  83. void Error_manager::error_manager_reset(Error_code error_code, Error_level error_level , std::string & error_aggregate_string)
  84. {
  85. m_error_code = error_code;
  86. m_error_level = error_level;
  87. reallocate_memory_and_copy_string(error_aggregate_string);
  88. return ;
  89. }
  90. //重置
  91. void Error_manager::error_manager_reset(const Error_manager & error_manager)
  92. {
  93. this->m_error_code = error_manager.m_error_code;
  94. this->m_error_level = error_manager.m_error_level;
  95. reallocate_memory_and_copy_string(error_manager.pm_error_description, error_manager.m_description_length);
  96. return ;
  97. }
  98. //清除所有内容
  99. void Error_manager::error_manager_clear_all()
  100. {
  101. m_error_code = SUCCESS;
  102. m_error_level = NORMAL;
  103. free_description();
  104. }
  105. //重载=
  106. Error_manager& Error_manager::operator=(const Error_manager & error_manager)
  107. {
  108. error_manager_reset(error_manager);
  109. }
  110. //重载=,支持Error_manager和Error_code的直接转化,会清空错误等级和描述
  111. Error_manager& Error_manager::operator=(Error_code error_code)
  112. {
  113. error_manager_clear_all();
  114. set_error_code(error_code);
  115. }
  116. //重载==
  117. bool Error_manager::operator==(const Error_manager & error_manager)
  118. {
  119. is_equal_error_manager(error_manager);
  120. }
  121. //重载==,支持Error_manager和Error_code的直接比较
  122. bool Error_manager::operator==(Error_code error_code)
  123. {
  124. if(m_error_code == error_code)
  125. {
  126. return true;
  127. }
  128. else
  129. {
  130. return false;
  131. }
  132. }
  133. //重载!=
  134. bool Error_manager::operator!=(const Error_manager & error_manager)
  135. {
  136. ! is_equal_error_manager(error_manager);
  137. }
  138. //重载!=,支持Error_manager和Error_code的直接比较
  139. bool Error_manager::operator!=(Error_code error_code)
  140. {
  141. if(m_error_code != error_code)
  142. {
  143. return true;
  144. }
  145. else
  146. {
  147. return false;
  148. }
  149. }
  150. //重载<<,支持cout<<
  151. std::ostream & operator<<(std::ostream &out, Error_manager &error_manager)
  152. {
  153. out << error_manager.to_string();
  154. return out;
  155. }
  156. //获取错误码
  157. Error_code Error_manager::get_error_code()
  158. {
  159. return m_error_code;
  160. }
  161. //获取错误等级
  162. Error_level Error_manager::get_error_level()
  163. {
  164. return m_error_level;
  165. }
  166. //获取错误描述的指针,(浅拷贝)
  167. char* Error_manager::get_error_description()
  168. {
  169. if(pm_error_description== nullptr)
  170. return "";
  171. return pm_error_description;
  172. }
  173. //复制错误描述,(深拷贝)
  174. //output:p_error_description 错误描述的字符串指针,不可以为NULL,必须要有实际的内存
  175. //output:description_length 错误描述的字符串长度,不可以为0,长度最好足够大,一般256即可。
  176. void Error_manager::copy_error_description(const char* p_error_description, int description_length)
  177. {
  178. if(p_error_description != NULL && pm_error_description != NULL)
  179. {
  180. char *pt_source = (char *)p_error_description;
  181. char* pt_destination = pm_error_description;
  182. int t_length_min = m_description_length;
  183. if(m_description_length > description_length)
  184. {
  185. t_length_min = description_length;
  186. }
  187. for(int i=0;i<t_length_min; i++)
  188. {
  189. *pt_destination = *pt_source;
  190. pt_destination++;
  191. pt_source++;
  192. }
  193. }
  194. return;
  195. }
  196. //复制错误描述,(深拷贝)
  197. //output:error_description_string 错误描述的string
  198. void Error_manager::copy_error_description(std::string & error_description_string)
  199. {
  200. if( (!error_description_string.empty() ) && pm_error_description != NULL)
  201. {
  202. error_description_string = pm_error_description;
  203. }
  204. return;
  205. }
  206. //设置错误码
  207. void Error_manager::set_error_code(Error_code error_code)
  208. {
  209. m_error_code = error_code;
  210. return;
  211. }
  212. //比较错误等级并升级,取高等级的结果
  213. void Error_manager::set_error_level_up(Error_level error_level)
  214. {
  215. if(m_error_level < error_level)
  216. {
  217. m_error_level = error_level;
  218. }
  219. return;
  220. }
  221. //比较错误等级并降级,取低等级的结果
  222. void Error_manager::set_error_level_down(Error_level error_level)
  223. {
  224. if(m_error_level > error_level)
  225. {
  226. m_error_level = error_level;
  227. }
  228. return;
  229. }
  230. //错误等级,设定到固定值
  231. void Error_manager::set_error_level_location(Error_level error_level)
  232. {
  233. m_error_level = error_level;
  234. return;
  235. }
  236. //设置错误描述
  237. void Error_manager::set_error_description(const char* p_error_description, int description_length)
  238. {
  239. reallocate_memory_and_copy_string(p_error_description, description_length);
  240. return ;
  241. }
  242. //设置错误描述
  243. void Error_manager::set_error_description(std::string & error_description_string)
  244. {
  245. reallocate_memory_and_copy_string(error_description_string);
  246. return ;
  247. }
  248. //尾部追加错误描述
  249. void Error_manager::add_error_description(const char* p_error_description, int description_length)
  250. {
  251. if(p_error_description !=NULL)
  252. {
  253. char* pt_description_front = pm_error_description;
  254. int t_description_front_length = m_description_length;
  255. char* pt_description_back = (char *)p_error_description;
  256. int t_description_back_length = 0;
  257. if(description_length == 0)
  258. {
  259. t_description_back_length = 0;
  260. while (*pt_description_back != '\0')
  261. {
  262. t_description_back_length++;
  263. pt_description_back++;
  264. }
  265. t_description_back_length++;
  266. pt_description_back = (char *)p_error_description;
  267. }
  268. else
  269. {
  270. t_description_back_length = description_length;
  271. }
  272. int t_description_new_length = t_description_front_length + 5 + t_description_back_length - 1;
  273. char* pt_description_new = (char*) malloc(t_description_new_length );
  274. sprintf(pt_description_new, "%s ### %s", pt_description_front, pt_description_back);
  275. free_description();
  276. pm_error_description = pt_description_new;
  277. m_description_length = t_description_new_length;
  278. }
  279. return ;
  280. }
  281. //尾部追加错误描述
  282. void Error_manager::add_error_description(std::string & error_description_string)
  283. {
  284. if( ! error_description_string.empty() )
  285. {
  286. std::string t_description_string = pm_error_description ;
  287. t_description_string += (" ### "+ error_description_string);
  288. reallocate_memory_and_copy_string(t_description_string);
  289. }
  290. }
  291. //比较错误是否相同,
  292. // 注:只比较错误码和等级
  293. bool Error_manager::is_equal_error_manager(const Error_manager & error_manager)
  294. {
  295. if(this->m_error_code == error_manager.m_error_code
  296. && this->m_error_level == error_manager.m_error_level)
  297. {
  298. return true;
  299. }
  300. else
  301. {
  302. return false;
  303. }
  304. }
  305. //比较并覆盖错误,讲低级错误转为字符串存放于描述中,
  306. //如果错误相同,则保留this的,将输入参数转入描述。
  307. void Error_manager::compare_and_cover_error(const Error_manager & error_manager)
  308. {
  309. if(this->m_error_code == SUCCESS)
  310. {
  311. error_manager_reset(error_manager);
  312. }
  313. else if (error_manager.m_error_code == SUCCESS)
  314. {
  315. return;
  316. }
  317. else
  318. {
  319. Error_manager t_error_manager_new;
  320. char* pt_string_inside = NULL;
  321. int t_string_inside_length = 0;
  322. if(this->m_error_level < error_manager.m_error_level)
  323. {
  324. t_string_inside_length = ERROR_NAMAGER_TO_STRING_FRONT_LENGTH + this->m_description_length;
  325. pt_string_inside = (char*)malloc(t_string_inside_length);
  326. translate_error_to_string(pt_string_inside, t_string_inside_length);
  327. error_manager_reset(error_manager);
  328. add_error_description(pt_string_inside,t_string_inside_length);
  329. }
  330. else
  331. {
  332. t_string_inside_length = ERROR_NAMAGER_TO_STRING_FRONT_LENGTH + error_manager.m_description_length;
  333. pt_string_inside = (char*)malloc(t_string_inside_length);
  334. ((Error_manager & )error_manager).translate_error_to_string(pt_string_inside, t_string_inside_length);
  335. add_error_description(pt_string_inside,t_string_inside_length);
  336. }
  337. }
  338. }
  339. //比较并覆盖错误,讲低级错误转为字符串存放于描述中,
  340. //如果错误相同,则保留this的,将输入参数转入描述。
  341. void Error_manager::compare_and_cover_error( Error_manager * p_error_manager)
  342. {
  343. if(this->m_error_code == SUCCESS)
  344. {
  345. error_manager_reset(*p_error_manager);
  346. }
  347. else if (p_error_manager->m_error_code == SUCCESS)
  348. {
  349. //
  350. }
  351. else
  352. {
  353. Error_manager t_error_manager_new;
  354. char* pt_string_inside = NULL;
  355. int t_string_inside_length = 0;
  356. if(this->m_error_level < p_error_manager->m_error_level)
  357. {
  358. t_string_inside_length = ERROR_NAMAGER_TO_STRING_FRONT_LENGTH + this->m_description_length;
  359. pt_string_inside = (char*)malloc(t_string_inside_length);
  360. translate_error_to_string(pt_string_inside, t_string_inside_length);
  361. error_manager_reset(*p_error_manager);
  362. add_error_description(pt_string_inside,t_string_inside_length);
  363. }
  364. else
  365. {
  366. t_string_inside_length = ERROR_NAMAGER_TO_STRING_FRONT_LENGTH + p_error_manager->m_description_length;
  367. pt_string_inside = (char*)malloc(t_string_inside_length);
  368. p_error_manager->translate_error_to_string(pt_string_inside, t_string_inside_length);
  369. add_error_description(pt_string_inside,t_string_inside_length);
  370. }
  371. }
  372. }
  373. //将所有的错误信息,格式化为字符串,用作日志打印。
  374. //output:p_error_description 错误汇总的字符串指针,不可以为NULL,必须要有实际的内存
  375. //output:description_length 错误汇总的字符串长度,不可以为0,长度最好足够大,一般256即可。
  376. void Error_manager::translate_error_to_string(char* p_error_aggregate, int aggregate_length )
  377. {
  378. char t_string_array[ERROR_NAMAGER_TO_STRING_FRONT_LENGTH] = {0};
  379. char* pt_index_front = t_string_array;
  380. char* pt_index_back = pm_error_description;
  381. char* pt_index = p_error_aggregate;
  382. sprintf(t_string_array, "error_code:0x%08x, error_level:%02d, error_description:", m_error_code , m_error_level );
  383. int t_length_min = m_description_length + ERROR_NAMAGER_TO_STRING_FRONT_LENGTH -1;
  384. if(t_length_min > aggregate_length)
  385. {
  386. t_length_min = aggregate_length;
  387. }
  388. for(int i=0;i<t_length_min; i++)
  389. {
  390. if(i < ERROR_NAMAGER_TO_STRING_FRONT_LENGTH -1)
  391. {
  392. *pt_index = *pt_index_front;
  393. pt_index++;
  394. pt_index_front++;
  395. }
  396. else
  397. {
  398. *pt_index = *pt_index_back;
  399. pt_index++;
  400. pt_index_back++;
  401. }
  402. }
  403. }
  404. //output:error_description_string 错误汇总的string
  405. void Error_manager::translate_error_to_string(std::string & error_aggregate_string)
  406. {
  407. char t_string_array[ERROR_NAMAGER_TO_STRING_FRONT_LENGTH] = {0};
  408. sprintf(t_string_array, "error_code:0x%08x, error_level:%02d, error_description:", m_error_code , m_error_level );
  409. error_aggregate_string = t_string_array ;
  410. if(pm_error_description != NULL)
  411. {
  412. error_aggregate_string += pm_error_description;
  413. }
  414. else
  415. {
  416. //error_aggregate_string += "NULL";
  417. }
  418. }
  419. //错误码转字符串的简易版,可支持cout<<
  420. //return 错误汇总的string
  421. std::string Error_manager::to_string()
  422. {
  423. std::string t_string;
  424. translate_error_to_string(t_string);
  425. return t_string;
  426. }
  427. //释放错误描述的内存,
  428. void Error_manager::free_description()
  429. {
  430. if(pm_error_description != NULL)
  431. {
  432. free (pm_error_description);
  433. pm_error_description = NULL;
  434. }
  435. m_description_length = 0;
  436. }
  437. //重新分配错误描述的内存,并从外部拷贝新的(深拷贝)
  438. //input:p_error_description 错误描述的字符串指针,可以为NULL,
  439. //input:description_length 错误描述的字符串长度,如果为0,则从p_error_description里面获取有效的长度
  440. void Error_manager::reallocate_memory_and_copy_string(const char* p_error_description, int description_length)
  441. {
  442. free_description();
  443. if(p_error_description != NULL)
  444. {
  445. char* pt_source = (char *)p_error_description;
  446. char* pt_destination = NULL;
  447. if(description_length == 0)
  448. {
  449. m_description_length = 0;
  450. while (*pt_source != '\0')
  451. {
  452. m_description_length++;
  453. pt_source++;
  454. }
  455. m_description_length++;
  456. pt_source = (char *)p_error_description;
  457. }
  458. else
  459. {
  460. m_description_length = description_length;
  461. }
  462. pm_error_description = (char*) malloc(m_description_length );
  463. pt_destination = pm_error_description;
  464. for(int i=0;i<m_description_length; i++)
  465. {
  466. *pt_destination = *pt_source;
  467. pt_destination++;
  468. pt_source++;
  469. }
  470. }
  471. return;
  472. }
  473. //重新分配错误描述的内存,并从外部拷贝新的(深拷贝)
  474. //input:error_aggregate_string 错误描述的string
  475. void Error_manager::reallocate_memory_and_copy_string(std::string & error_aggregate_string)
  476. {
  477. free_description();
  478. if( ! error_aggregate_string.empty())
  479. {
  480. m_description_length = error_aggregate_string.length()+1;
  481. pm_error_description = (char*) malloc( m_description_length );
  482. strcpy(pm_error_description , error_aggregate_string.c_str() );
  483. }
  484. }