Doing the impossible!!

[FireHead]

Hello World...


I have file which contains:

2005-12-30|23:59:58|FIRST NAME|LAST NAME
2005-12-30|23:59:59|FIRST NAME|LAST NAME
2005-12-30|24:00:01|FIRST NAME|LAST NAME

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main(int argc,char *argv[]){
	FILE* pFIn=0;
	FILE* pFOut=0;
	char pBufIn =0;
	char puid[11]="";
	struct tm tTime;
	
	int offset=0;
	int pipecount=0;
	int filesize=0;
	unsigned short bits=0;
	const int msgid[3]={11,8,9};	

	//---- --------------------------------//
	pFIn=fopen("./resend.txt","r");
	pFOut=fopen("./resend_2.txt","a");

	if(pFIn == NULL){
		printf("File not found");
		return 1;
	}
	if(pFOut == NULL ){
		printf("File not created");
		return 1;
	}

	fseek(pFIn,SEEK_SET,SEEK_SET);
	
	while(fgetc(pFIn)!=EOF){
		fseek(pFIn,offset,SEEK_SET);

		for(filesize=0;filesize<msgid[filesize];filesize++)
		{
			while(pipecount<msgid[filesize]){
				pBufIn=(char)fgetc(pFIn);
				if(pBufIn == '|')
					pipecount=pipecount+1;
			}
			offset=0;
			do
			{
				pBufIn=(char)fgetc(pFIn);
				if(pBufIn=='|')pipecount=pipecount+1;	
				else{
					switch(msgid[filesize])
					{
					case 8:
						if(bits<=sizeof(tTime.tm_year))
						tTime.tm_year=pBufIn;
						break;
					case 11:
						puid[offset]=(char)pBufIn;
						//puid=strcat(puid,(char *)pBufIn);
					break;
					}
					offset=offset+1;
					
				}
			}while(pipecount < msgid[filesize]+1);

			//insert a null character....
			if(filesize==msgid[filesize])puid[offset]='\0';
		}

		fprintf(pFOut,"%s\n",puid);
		pipecount=0;
		do
		pBufIn=(char)fgetc(pFIn);
		while(pBufIn != '\n');
		//approached the end of the line
		offset=ftell(pFIn);
	}
	fclose(pFOut);
	fclose(pFIn);

	return 0;
}

Question: How read each byte/char and insert them into a integer.

I want to insert the time and date accordingly based on < struct tm> type object.

Eg: struct tm Timer;
tm.tm_year=2005;
tm.tm_month=12;
and so on.

I am currently using fgetc to get each byte.

How do I go on about do this?


Question No2.
How to append a byte by byte to a pointer object:

char A='A';
char B='B';

/* HOW DO I THIS?
char* object=NULL;
*object=(char &)A;*object++;
*object=(char &)B;*object++;
*/

[Salem]

> Question: How read each byte/char and insert them into a integer.
> while(fgetc(pFIn)!=EOF)
Would be
while( (ch=fgetc(pFIn)) !=EOF )

Strictly speaking, you should only have one point where the file is read. Scattering many fgetc calls in the loop body makes for hard coding.

Also, why don't you read a whole line using fgets?

char buff[BUFSIZ];
while ( fgets( buff, BUFSIZ, pFIn ) != NULL ) {
  // parse buff for | separators
}

> How to append a byte by byte to a pointer object:
Well first of all, your object needs to point somewhere other than NULL,
then it would be
*object++ = 'a';
*object++ = 'b';
*object++ = A;
etc

[Dave_Sinkula]

After scanning each line, filling the struct tm object could be done like this.

char last[32], first[32];
struct tm calendar;
if ( sscanf(buff, "%d-%d-%d|%d:%d:%d|%31[^|]|%31[^\n]",
            &calendar.tm_year, &calendar.tm_mon, &calendar.tm_mday,
            &calendar.tm_hour, &calendar.tm_min, &calendar.tm_sec,
            first, last) == 8 )
{
   time_t t;
   calendar.tm_year -= 1900;
   calendar.tm_mon  -= 1;
   t = mktime(&calendar);
   if ( t != (time_t)(-1) )
   {
      printf("%s %s %s", first, last, ctime(&t));
   }
}