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    [返回] 计算机科学论坛计算机技术与应用『 C/C++编程思想 』 → 文件操作,將一個文件中的特定值插入到另一文件的指定處 查看新帖用户列表

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    发贴心情 文件操作,將一個文件中的特定值插入到另一文件的指定處


    int GetValueInFile(char * fileName,char *bufferGet,char *locationStr,int xIndex)
    {
     FILE * fpSource;
     char msgShow[256] = ""; 

     int length = strlen(CurrentPath)+strlen(fileName);
     memset(bufferGet,0,sizeof(bufferGet));

     char * soureFileName = new char [length];
     memset(soureFileName,0,length);
     strcat(soureFileName,CurrentPath);
     strcat(soureFileName,fileName);

     if ( !(fpSource=fopen(soureFileName,"r") ) )
     {
      sprintf(msgShow,"\nFile Define In Config can't be read :\n%s\n",soureFileName);
      help(msgShow);
      return 1;
     }

     int xCount = 0 ;
     bool GotThat = false;
     while ( !feof(fpSource) )
     {
      char buffer[256] = "";
      fgets(buffer,256,fpSource);   
      if ( strstr(buffer,locationStr)>0 )
      {  
       xCount+=1;
       int xlocation = strstr(buffer,locationStr)-buffer;
       if ( xIndex==xCount )
       {         
        int xBegin=xlocation+strlen(locationStr);
        int xEnd= xBegin;
        int length = strlen(buffer);

        for ( ;  buffer[xBegin]==' '; xBegin++ )
         ;
        for ( xEnd= xBegin; (buffer[xEnd]!=' ')&&(buffer[xEnd]!='\n');xEnd++ )
         ;
        if ( xEnd>xBegin )
        {
         GotThat = true; 
         strncpy(bufferGet,buffer+xBegin,(xEnd-xBegin));
         printf("\nGet Value OK:\n%s\n",bufferGet);     
        } 
        else
        {
         memset(msgShow,0,256);
         sprintf(msgShow,"\nThe %dst string By keyword: \n%s\nFound but is Null in File: \n%s\n",
           xIndex,locationStr,fileName);  
         printf(msgShow);
        }
        break;
       }    
      } 
     }
     if ( !GotThat )
     {
      memset(msgShow,0,256);
      sprintf(msgShow,"\nThe %dst string By keyword: \n%s\nNot found in File: \n%s",
        xIndex,locationStr,fileName);
      help(msgShow);  
     }
       
     fclose(fpSource);

     return GotThat?0:1;
    }

    int AddValueToFile(char * fileName,char *valueWrite,char *locationStr,int xIndex)
    {
     FILE * fpSource;
     FILE * fpDest;
     char msgShow[256] = "";
     
     int length = strlen(CurrentPath)+strlen(fileName)+5;
     char * tmpFileName = new char [length];
     char * soureFileName = new char [length];
     memset(tmpFileName,0,length);
     memset(soureFileName,0,length);
     sprintf(tmpFileName,"%s%s_tmp",CurrentPath,fileName);
     strcat(soureFileName,CurrentPath);
     strcat(soureFileName,fileName);

     remove(tmpFileName); 

     if ( !(fpSource=fopen(soureFileName,"r") ) )
     {
      sprintf(msgShow,"\nFile Define In Config can't be read :\n%s\n",fileName);
      help(msgShow);
      return 1;
     }

     if (!( fpDest=fopen(tmpFileName,"w")))
     {  
      help("\nCan't Create New File in current locatioin!");
      return 1;
     } 

     int xCount = 0 ;
     bool GotThat = false;
     while ( !feof(fpSource) )
     {
      char buffer[256] = "";
      fgets(buffer,256,fpSource);
      if ( !GotThat )
      {
       if ( strstr(buffer,locationStr)>0 )
       {    
        xCount+=1;
        if ( xIndex==xCount )
        {
         GotThat = true;
         
         int xlocation = strstr(buffer,locationStr)-buffer;   
         char writeBuffer[256] = "";
         strncpy(writeBuffer,buffer,xlocation+strlen(locationStr));
         fputs(writeBuffer,fpDest);
         fputs(valueWrite,fpDest);

         memset(writeBuffer,0,256);
         int xBegin = 0;
         for ( xBegin= xlocation+strlen(locationStr);
           (buffer[xBegin]!=' ')&&(buffer[xBegin]!='\n');
           xBegin++ )
          ;

         strcpy(writeBuffer,buffer+xBegin);
         fputs(writeBuffer,fpDest);     
        }
        else
         fputs(buffer,fpDest);
       }
       else
        fputs(buffer,fpDest);
      }
      else
       fputs(buffer,fpDest);
     }

     fclose(fpSource);
     fclose(fpDest);

     if ( GotThat )
     {    
      if ( 0!=remove(soureFileName) )
      {
       memset(msgShow,0,256);
       sprintf(msgShow,"\nCan't remove file:\n%s\n",soureFileName);  
       help(msgShow);  
       printf("ERROR Code:%d\n",errno);
       return 1;
      }
     
      if (0!=rename(tmpFileName,soureFileName))
      {
       
       memset(msgShow,0,256);
       sprintf(msgShow,"\nCan't Rename in current locatioin!\n%s",soureFileName);  
       printf("ERROR Code:%d",errno);
       help(msgShow);
       return 1;
      }   
      printf("\nSet Value OK\n"); 
     }
     else
     {
      remove(tmpFileName); 
      memset(msgShow,0,256);
      sprintf(msgShow,"\nThe %dst string By keyword: \n%s\nNot found in File: \n%s",
         xIndex,locationStr,soureFileName);
      help(msgShow);  
     }

     return GotThat?0:1;
    }


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