?? publib.c
字號:
#include "publib.h"ssize_t readblock(int fd, void * buf, size_t size){ char * bufp = buf; size_t bytestoread = size; ssize_t bytesread = 0; size_t totalbytes = 0; if( (NULL == buf) && (0 != size) ) return -1; for(; 0 < bytestoread; bufp += bytesread, bytestoread -= bytesread){ bytesread = read(fd, bufp, bytestoread); if(0 == bytesread){ if(0 == totalbytes){ return 0; }else{ errno = EINVAL; return -1; } } if(-1 == bytesread){ if(EINTR == errno){ bytesread = 0; }else{ return -1; } } totalbytes += bytesread; } return totalbytes;}int GetFileInfo(char * pPath, Fileinfo * pInfo){ struct stat statbuf; int retval = -1; int filefd = -1; if((NULL == pPath) || (NULL == pInfo)){ return -1; } if(-1 == stat(pPath, &statbuf)){ perror("Failed to get file status"); return -1; } pInfo->nLen = statbuf.st_size; strncpy( pInfo->pPath, pPath, sizeof(pInfo->pPath)); pInfo->pStr = (char *)malloc(statbuf.st_size); if(NULL == pInfo->pStr){ perror("Failed to allocate memory"); return -1; } while( (-1 == (filefd = open(pPath, O_RDONLY))) && (EINTR == errno)); if(-1 == filefd){ perror("Filed to open the file"); free(pInfo->pStr); return -1; } if(readblock(filefd, pInfo->pStr, pInfo->nLen) != pInfo->nLen){ perror("Failed to read file content"); free(pInfo->pStr); return -1; } while( retval = close(filefd), (-1 == retval) && (EINTR == errno)); if(-1 == retval){ perror("Failed to close the file"); } return 0;}int TransferString(char * pOrgStr, const size_t orgLen, smch_t ** ppTranStr, size_t * pTranLen){ size_t turn = 0; size_t inturn = 0; char * pChar = pOrgStr; char * pTranChar = NULL; /* for tranStr and pTranLen **********/ size_t alloMemSize = 0; volatile size_t useMemSize = 0; const size_t eleSize = sizeof(smch_t); const size_t increSize = 10 * eleSize; /* bulk copy interval **********/ volatile int nBegPos = -1; volatile int nEndPos = -1; char str[3]; str[2] = 0; if( (NULL == pOrgStr) && (0 != orgLen)) return -1; if( (NULL == pTranLen) || (NULL == ppTranStr)) return -1; useMemSize = 0; alloMemSize = orgLen + increSize; *pTranLen = 0; *ppTranStr = (smch_t *)malloc(alloMemSize); pTranChar = (char *) *ppTranStr; if(NULL == *ppTranStr){ perror("Failed to allocate memory when transfering string"); return -1; } for(turn = 0; turn < orgLen;){ /******* str[0] = *pChar; str[1] = *(pChar + 1); printf(" %u => %s\n", turn, str); ********/ if(643 == turn){ printf("we got it!"); } if(*pChar < 0){ /* simple chinese character */ if(0 > nBegPos){ nBegPos = turn; } turn += eleSize; /* eleSize is 2 in 2006 */ pChar += eleSize; }else{ /* European character */ if(0 <= nBegPos){ nEndPos = turn; if( (nEndPos - nBegPos) >= (alloMemSize - useMemSize)){ /* no enough memory */ alloMemSize = (nEndPos - nBegPos) - (alloMemSize - useMemSize) \ + alloMemSize + (orgLen - turn) + increSize; if(NULL == (*ppTranStr = realloc(*ppTranStr, alloMemSize))){ perror("Failed to realloc"); return -1; } pTranChar = (char *) *ppTranStr + useMemSize; } /* bulk copy ********/ strncpy(pTranChar, (char *)pOrgStr + nBegPos, nEndPos - nBegPos); useMemSize += (nEndPos - nBegPos); pTranChar += (nEndPos - nBegPos); nBegPos = -1; nEndPos = -1; } /* character copy ********/ if( (alloMemSize - useMemSize) <= (orgLen - turn) ){ alloMemSize = alloMemSize + (orgLen - turn) - (alloMemSize - useMemSize) + increSize; if(NULL == (*ppTranStr = realloc(*ppTranStr, alloMemSize))){ perror("Failed to realloc"); return -1; } pTranChar = (char *) *ppTranStr + useMemSize; } for(inturn = 1; inturn < eleSize; ++inturn) *pTranChar++ = ' '; *pTranChar++ = *pChar; useMemSize += eleSize; ++turn; /* only skip one character */ ++pChar; } } if(0 <= nBegPos){ nEndPos = orgLen; if( (nEndPos - orgLen) % 2 != 0 ){ --nEndPos; if(nEndPos <= nBegPos) return 0; } if( (nEndPos - nBegPos) >= (alloMemSize - useMemSize)){ /* no enough memory */ alloMemSize = (nEndPos - nBegPos) - (alloMemSize - useMemSize) + alloMemSize; if(NULL == (*ppTranStr = realloc(*ppTranStr, alloMemSize))){ perror("Failed to realloc"); return -1; } pTranChar = (char *) *ppTranStr + useMemSize; } /* bulk copy *********/ strncpy(pTranChar, (char *)pOrgStr + nBegPos, nEndPos - nBegPos); useMemSize += (nEndPos - nBegPos); } *pTranLen = useMemSize; return 0; }unsigned int SmchGB_Hash(const unsigned short smch){ unsigned char * pChar = (unsigned char *)&smch; return ((*pChar - 176) * 94 + *(pChar + 1) - 161); }unsigned int SmchGBKHash(const unsigned short smch){ unsigned char * pChar = (unsigned char *)&smch; return ((*pChar - 129) * 190 + ( *(pChar + 1) - 64) - *(pChar + 1)/128);}int IndexCharForStr(smch_t * pConStr, const size_t nStrLen, CharIndex ** ppIndexArray, const size_t nIdxLen){ smch_t * pSmch = NULL; size_t turn = 0; size_t uiHashPos = 0; smch_t smch = 0; CharIndex * pIndex = NULL; CharIndex * pIdxCur = NULL; if(NULL == pConStr) return -1; if((0 != nStrLen) && ( (NULL == ppIndexArray) || (0 == nIdxLen))) return -1; if(0 == nStrLen) return 0; for(turn = 0; turn < nIdxLen; ++turn){ ppIndexArray[turn] = NULL; } for(pSmch = pConStr, turn = 0; turn < nStrLen; ++turn, ++pSmch){ smch = *pSmch; uiHashPos = (size_t)(SmchGBKHash(smch)) % nIdxLen; pIdxCur = ppIndexArray[uiHashPos]; /******** if(137 == turn){ printf("we got it! index => %u hash => %u\n", (int)pIdxCur, uiHashPos); } ************/ if(NULL == pIdxCur){ if(NULL == (pIndex = (CharIndex *)malloc(sizeof(CharIndex)))){ perror("Failed to malloc"); return -1; } pIndex->smch = smch; pIndex->pNext = NULL; pIndex->memLen = 5; pIndex->memUse = 0; pIndex->location = (size_t *)malloc(pIndex->memLen * sizeof(size_t)); if(NULL == pIndex->location){ perror("Failed to allocate memory"); return -1; } pIndex->location[pIndex->memUse] = turn; pIndex->memUse = 1; ppIndexArray[uiHashPos] = pIndex; }else{ while( (pIdxCur->smch != smch) && (NULL != pIdxCur->pNext)){ pIdxCur = pIdxCur->pNext; } if(pIdxCur->smch != smch){ /*pIdxCur is the last node */ if(NULL == (pIndex = (CharIndex *)malloc(sizeof(CharIndex)))){ perror("Failed to malloc"); return -1; } pIndex->smch = smch; pIndex->pNext = NULL; pIndex->memLen = 5; pIndex->memUse = 0; pIndex->location = (size_t *)malloc(pIndex->memLen * sizeof(size_t)); if(NULL == pIndex->location){ perror("Failed to allocate memory"); return -1; } pIndex->location[pIndex->memUse] = turn; pIndex->memUse = 1; pIdxCur->pNext = pIndex; }else{ if((pIdxCur->memLen - pIdxCur->memUse) <= 1){ pIdxCur->memLen *= 2; pIdxCur->location = realloc(pIdxCur->location, pIdxCur->memLen * sizeof(size_t)); if(NULL == pIdxCur->location){ perror("Faile to realloc"); return -1; } } pIdxCur->location[pIdxCur->memUse] = turn; pIdxCur->memUse += 1; /************** if(50 < pIdxCur->memUse){ printf("warning!\n"); } ***************/ } } /************* if((NULL != (pIndex = ppIndexArray[376])) && (3 <= pIndex->memUse)){ char str[3]; *((smch_t *)str) = pIndex->smch; str[2] = '\0'; printf("turn => %u <376> => %s, len => %u\n", turn, str, pIndex->memUse); } ************/ } /* for 376 ******************* if(NULL != (pIndex = ppIndexArray[376])){ char str[3]; *((smch_t *)str) = pIndex->smch; str[2] = '\0'; printf("<376> => %s, len => %u", str, pIndex->memUse); } *************/ return 0; }int GetCharPosList(const smch_t smch, CharIndex ** ppIndexArray, const size_t nIdxLen, size_t ** ppListPos, size_t * pListLen){ size_t uiHashPos = 0; CharIndex * pIndex = NULL; if((NULL == ppIndexArray) || (0 == nIdxLen)) return -1; if((NULL == ppListPos) || (NULL == pListLen)) return -1; uiHashPos = (size_t)(SmchGBKHash(smch)) % nIdxLen; for(pIndex = ppIndexArray[uiHashPos]; (NULL != pIndex) && (smch != pIndex->smch); pIndex = pIndex->pNext); if(NULL == pIndex) /* no such character */ return -1; *ppListPos = pIndex->location; *pListLen = pIndex->memUse; return 0; }?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -