Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!utgpu!water!watmath!clyde!cbosgd!osu-cis!osupyr!artsvax!mike From: mike@artsvax.UUCP Newsgroups: comp.sys.mac Subject: LSC fread head scratcher Message-ID: <213@artsvax.UUCP> Date: Mon, 30-Nov-87 22:04:36 EST Article-I.D.: artsvax.213 Posted: Mon Nov 30 22:04:36 1987 Date-Received: Thu, 3-Dec-87 22:39:44 EST Organization: College of the Arts Computer Lab, OSU Lines: 35 Keywords: LSC fread wierd I'm trying to read entire large files into memory on the Mac. (for speed in writing them out) Since I can't figure out how get the total size of a file, I devised the following code. Unfortunately, it doesn't seem to work correctly. Any comments would be appreciated. For some reason, it always reads 79 blocks from every file when run from a MacII, and 44 blocks when run from a Plus. #define MAXBUFF 153600 /* room for three hundred blocks */ do_read_file(fp) FILE *fp; { unsigned char buffer[300 * 512]; unsigned char *buff; /* I would have used malloc or calloc, but */ /* everytime I called them the system crashes */ buff = buffer; while((!feof(fp) && ((buff - buffer) < MAXBUFF)){ length = fread(buff,sizeof(char),512,fp); buff += length; } fclose(fp); } ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Michael S. Czeiszperger | Disclaimer: "Sorry, I'm all out of pith" Systems Programmer I | Smail: Room 406 Baker (614) College of the Arts | 1971 Neil Avenue 292- Computer Lab | Columbus, OH 43210 0895 The Ohio State University | UUCP: {decvax,ucbvax}!cbosgd!osupyr!artsvax!mike ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~