Thread: .txt file splitter partial program

Originally Posted by tabstop

Nothing. Once you open the file for output, that's the end of that. If you want to be in a certain directory you have to open the file there.

By this, do you mean that the file selected has to be in the folder that the output tet files are?

Another question while I am at it. Is there a way to run the program from the command prompt in such a way that I can say type: "split.exe index_20090101.txt" and it will use the text file specified as the file name?

Thank you.

Originally Posted by ojm

By this, do you mean that the file selected has to be in the folder that the output tet files are?

Not at all. I say that when you do this

Code:

fpTmp = fopen(TempfileName,"ab");

TempfileName had better be what you want it to be, because you're stuck with it now.

Originally Posted by ojm

Another question while I am at it. Is there a way to run the program from the command prompt in such a way that I can say type: "split.exe index_20090101.txt" and it will use the text file specified as the file name?

Thank you.

Look up command line arguments.

Originally Posted by tabstop

Not at all. I say that when you do this

Code:

fpTmp = fopen(TempfileName,"ab");

TempfileName had better be what you want it to be, because you're stuck with it now.

So if the directory is changed before writing to the tempory files it will work? Is there a simple line of code that can open the directory and then from then on use that directory?

Originally Posted by tabstop

Look up command line arguments.

Thanks for that. Got the program working with the file name coming from the command line now.

Originally Posted by ojm

So if the directory is changed before writing to the tempory files it will work? Is there a simple line of code that can open the directory and then from then on use that directory?

On the assumption this is windows, that's _chdir from <direct.h>.

Tabstop, thank you very much for you help. I've finished my program and it works a treat. I've put the code below if anyone ever wants it in the future.

Code:

#include <stdio.h>
#include <string.h>
#include <errno.h>
#define EXTENSION ".txt"
int main ( int argc, char **argv )
	{

 	int count=0;
	char fileName[100];
	char TempfileName[100];
	char TempString[256];
	char TempChar;
	FILE *fp;
	FILE *fpTmp;

	fp = fopen(argv[1], "rb");

	if(fp == NULL)
		{
		/*fprintf(stderr, "Error Opening File: %s\n", fileName); */
		printf("Error Opening File %s: %s", argv[1], strerror(errno));
		return -1;
		}

	else
		printf("%s Opened Successfully.\n\n\n",argv[1]);

	while(!feof(fp))
		{
		
		for(count=0; ( (TempfileName[count] = fgetc(fp)) != ',' ) ; count++);
		
		TempfileName[count] = '\0';
		
		strcat(TempfileName,EXTENSION);
		
		chdir("split"); /* split is the sub directory, change to another if wanted */
		
		fpTmp = fopen(TempfileName,"ab");
		
		if(fpTmp == NULL)
			{
			fprintf(stderr, "Error Opening File: %s\n", TempfileName);
			return -1;
			}
		else
			printf("%s Opened Successfully.\n",TempfileName);
			
		fgets(TempString,256,fp);
		
		TempString[strlen(TempString)-1] = '\n';
		
		fputs(TempString, fpTmp);
		
		printf("%sWritten to %s\n", TempString, TempfileName);
		
		fclose(fpTmp);
		
		printf("%s Closed.\n\n",TempfileName);
		
		}

	}