C语言 实现配置文件的编写与解析

/** * @Copyright (c) 2019, sutpc and/or its affiliates. All rights reserved. * @file config.c * @brief 从.conf扩展名的配置文件读入配置信息，转换成对应数据类型输出 * @version 1.1 * @author 周勇 * @date 2019年9月25日 */ #include "config.h" uint64_t GetConfigStringValue(char const* pInFileName, char* pInSectionName, char* pInKeyName, char *pOutKeyValue) { FILE *fpConfig; char szBuffer[150]; char *pStr1, *pStr2; uint64_t iRetCode = 0; memset(szBuffer, 0, sizeof(szBuffer)); if (NULL == (fpConfig = fopen(pInFileName, "r"))) return FILENAME_NOTEXIST; while (!feof(fpConfig)) { if (NULL == fgets(szBuffer, 150, fpConfig)) { break; } pStr1 = szBuffer; while ((' ' == *pStr1) || ('\t' == *pStr1)) pStr1++; if ('[' == *pStr1) { pStr1++; while ((' ' == *pStr1) || ('\t' == *pStr1)) pStr1++; pStr2 = pStr1; while ((']' != *pStr1) && ('\0' != *pStr1)) pStr1++; if ('\0' == *pStr1) continue; while (' ' == *(pStr1 - 1)) pStr1--; *pStr1 = '\0'; iRetCode = CompareString(pStr2, pInSectionName); if (!iRetCode) { iRetCode = GetKeyValue(fpConfig, pInKeyName, pOutKeyValue); fclose(fpConfig); return iRetCode; } } } fclose(fpConfig); //printf("retnum:%lu", (long unsigned int)iRetCode); return SECTIONNAME_NOTEXIST; } int CompareString(char *pInStr1, char *pInStr2) { if (strlen(pInStr1) != strlen(pInStr2)) { return STRING_LENNOTEQUAL; } /*while( toupper(*pInStr1)==toupper(*pInStr2) )*//*#include <ctype.h>*/ while (*pInStr1 == *pInStr2) { if ('\0' == *pInStr1) break; pInStr1++; pInStr2++; } if ('\0' == *pInStr1) return STRING_EQUAL; return STRING_NOTEQUAL; } int GetKeyValue(FILE *fpConfig, char *pInKeyName, char *pOutKeyValue) { char szBuffer[150]; char *pStr1, *pStr2, *pStr3; unsigned int uiLen; int iRetCode = 0; memset(szBuffer, 0, sizeof(szBuffer)); while (!feof(fpConfig)) { if (NULL == fgets(szBuffer, 150, fpConfig)) break; pStr1 = szBuffer; while ((' ' == *pStr1) || ('\t' == *pStr1)) pStr1++; if ('#' == *pStr1) continue; if (('/' == *pStr1) && ('/' == *(pStr1 + 1))) continue; if (('\0' == *pStr1) || (0x0d == *pStr1) || (0x0a == *pStr1)) continue; if ('[' == *pStr1) { pStr2 = pStr1; while ((']' != *pStr1) && ('\0' != *pStr1)) pStr1++; if (']' == *pStr1) break; pStr1 = pStr2; } pStr2 = pStr1; while (('=' != *pStr1) && ('\0' != *pStr1)) pStr1++; if ('\0' == *pStr1) continue; pStr3 = pStr1 + 1; if (pStr2 == pStr1) continue; *pStr1 = '\0'; pStr1--; while ((' ' == *pStr1) || ('\t' == *pStr1)) { *pStr1 = '\0'; pStr1--; } iRetCode = CompareString(pStr2, pInKeyName); if (!iRetCode) { pStr1 = pStr3; while ((' ' == *pStr1) || ('\t' == *pStr1)) pStr1++; pStr3 = pStr1; while (('\0' != *pStr1) && (0x0d != *pStr1) && (0x0a != *pStr1)) { if (('/' == *pStr1) && ('/' == *(pStr1 + 1))) break; pStr1++; } *pStr1 = '\0'; uiLen = strlen(pStr3); memcpy(pOutKeyValue, pStr3, uiLen); *(pOutKeyValue + uiLen) = '\0'; return SUCCESS; } } return KEYNAME_NOTEXIST; } uint64_t GetConfigIntValue(char const *pInFileName, char* pInSectionName, char* pInKeyName, uint64_t *pOutKeyValue) { uint64_t iRetCode = 0; char szKeyValue[20], *pStr; memset(szKeyValue, 0, sizeof(szKeyValue)); iRetCode = GetConfigStringValue(pInFileName, pInSectionName, pInKeyName, szKeyValue); if (iRetCode) return iRetCode; pStr = szKeyValue; while ((' ' == *pStr) || ('\t' == *pStr)) pStr++; if (('0' == *pStr) && (('x' == *(pStr + 1)) || ('X' == *(pStr + 1)))) sscanf(pStr + 2, "%lu", pOutKeyValue); else sscanf(pStr, "%lu", pOutKeyValue); return SUCCESS; } uint64_t GetConfigDoubleValue(char const *pInFileName, char* pInSectionName, char* pInKeyName, double *pOutKeyValue) { uint64_t iRetCode = 0; char szKeyValue[20], *pStr; double value; memset(szKeyValue, 0, sizeof(szKeyValue)); iRetCode = GetConfigStringValue(pInFileName, pInSectionName, pInKeyName, szKeyValue); if (iRetCode) return iRetCode; pStr = szKeyValue; while ((' ' == *pStr) || ('\t' == *pStr)) pStr++; if (('0' == *pStr) && (('x' == *(pStr + 1)) || ('X' == *(pStr + 1)))) sscanf(pStr + 2, "%lf", pOutKeyValue); else value = atof(pStr); //printf("dou:%lf\n", value); //pOutKeyValue = &value; memcpy(pOutKeyValue, &value, 8); return SUCCESS; } uint64_t GetValueFromArray(char* buf, uint8_t len) { uint64_t ret = 0, i; for (i = 0; i < len; i++) { ret = ((ret << 8) + buf[i]); } return ret; } uint8_t GetXorCheckCode(uint8_t *buf, uint8_t length) { uint8_t num = 0; uint8_t i = 0; for (i = 0; i < length; i++) { num ^= buf[i]; } return num; } uint8_t GetSumCheckCode(uint8_t *buf, uint8_t length) { uint8_t num = 0; uint8_t i = 0; for (i = 0; i < length; i++) { num = (num + buf[i]) % 256; } return num; } // host long 64 to network uint64_t Hl64ton(uint64_t host) { uint64_t ret = 0; uint32_t high, low; low = host & 0xFFFFFFFF; high = (host >> 32) & 0xFFFFFFFF; low = htonl(low); high = htonl(high); ret = low; ret <<= 32; ret |= high; return ret; } //network to host long 64 uint64_t Ntohl64(uint64_t host) { uint64_t ret = 0; uint32_t high, low; low = host & 0xFFFFFFFF; high = (host >> 32) & 0xFFFFFFFF; low = ntohl(low); high = ntohl(high); ret = low; ret <<= 32; ret |= high; return ret; } void SetArrayValue(uint8_t *addr, uint32_t len, uint8_t value) { int i = 0; for (i = 0; i < len; ++i) { addr[i] = value; } }