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Full Discussion: Read redirected file from stdin in C (a.out < file)
Top Forums Programming Read redirected file from stdin in C (a.out < file) Post 302492923 by homeboy on Tuesday 1st of February 2011 11:54:29 PM
Old 02-02-2011
Quote:
Originally Posted by semash!
I need to code a program in C to read it from stdin redirection (i.e. root@box~# ./a.out < file), my question is, how can i do that?

I've tried with functions like fscanf(stdin, "%s->%s", var1, var2), but it only reads the first line of the file. How do i pass to the next line in file, and how do i detect the EOF?

Thanks in advance!
are you sure you get an output?
the < already open stdin on file,no need to do more to redirection.However,"-->" is NOT a seperator for scanf,you can achieve your goal by this:
Code:
int main()
{	
	char line[BUFSIZ];
	char *tok;

	while(fgets(line,BUFSIZ,stdin) != NULL){
		for(tok=strtok(line,"-->");tok != NULL;tok=strtok(NULL,"-->")){
			printf("%s\n",tok);
		}
	}
}

 

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LEARN ABOUT FREEBSD

au_free_token

AU_FREE_TOKEN(3)					   BSD Library Functions Manual 					  AU_FREE_TOKEN(3)

NAME

     au_free_token -- deallocate a token_t created by any of the au_to_*() BSM API functions

LIBRARY

     Basic Security Module Library (libbsm, -lbsm)

SYNOPSIS

     #include <bsm/libbsm.h>

     void
     au_free_token(token_t *tok);

DESCRIPTION

     The BSM API generally manages deallocation of token_t objects.  However, if au_write(3) is passed a bad audit descriptor, the token_t *
     parameter will be left untouched.	In that case, the caller can deallocate the token_t using au_free_token() if desired.

     The tok argument is a token_t * generated by one of the au_to_*() BSM API calls.  For convenience, tok may be NULL, in which case
     au_free_token() returns immediately.

IMPLEMENTATION NOTES

     This is, in fact, what audit_write(3) does, in keeping with the existing memory management model of the BSM API.

SEE ALSO

     audit_write(3), au_write(3), libbsm(3)

HISTORY

     The OpenBSM implementation was created by McAfee Research, the security division of McAfee Inc., under contract to Apple Computer, Inc., in
     2004.  It was subsequently adopted by the TrustedBSD Project as the foundation for the OpenBSM distribution.

AUTHORS

     This software was created by Robert Watson, Wayne Salamon, and Suresh Krishnaswamy for McAfee Research, the security research division of
     McAfee, Inc., under contract to Apple Computer, Inc.

     The Basic Security Module (BSM) interface to audit records and audit event stream format were defined by Sun Microsystems.

BSD
								  April 19, 2005							       BSD
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