Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!indetech!vsi1!zorch!mykes
From: mykes@zorch.SF-Bay.ORG (Mike Schwartz)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: Speeding up input
Keywords: fgets vs read
Message-ID: <1991Jan18.071607.16052@zorch.SF-Bay.ORG>
Date: 18 Jan 91 07:16:07 GMT
References: <659@caslon.cs.arizona.edu>
Organization: SF-Bay Public-Access Unix
Lines: 37

In article <659@caslon.cs.arizona.edu> dave@cs.arizona.edu (Dave P. Schaumann) writes:
>
>I have a program that reads in a text file and does processing on it.
>Currently, I use fopen and fgets to access the file.  I was wondering if it
>would be faster to use open and read, and then roll my own fgets?
>
>I am using Manx V3.6a, if it matters.
>
>Dave Schaumann      | We've all got a mission in life, though we get into ruts;
>dave@cs.arizona.edu | some are the cogs on the wheels, others just plain nuts.
>						-Daffy Duck.

Try the following:
main() {
	UBYTE	*buf;
int	fd, size;

	fd = open(filename, O_RDONLY);
	if (fd == -1) fail...
	size = lseek(fd, 0, 2); lseek(fd, 0, 0);
	buf = (UBYTE *)malloc(size);
	if (!buf) fail...
	read(fd, buf, size);
	close(fd);

	/* buf now points to your entire file */
	...
}

You can roll your own gets() function, or you can just parse through
the buffer (which will be the fastest).

I wouldn't do this under MS-DOS, but it works fine on the Amiga, as long
as you have enough RAM to hold your file.  Since it is text, you should
have no problem.

mykes