home *** CD-ROM | disk | FTP | other *** search
- /*
- * Program: ASCII file reading routines
- *
- * Modifier: Michael Seibel
- * Networks and Distributed Computing
- * Computing & Communications
- * University of Washington
- * Administration Building, AG-44
- * Seattle, WA 98195
- * Internet: mikes@cac.washington.edu
- *
- * Date: 19 Jan 1991
- * Last Edited: 6 Jan 1992
- *
- * Copyright 1991 by the University of Washington
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation for any purpose and without fee is hereby granted, provided
- * that the above copyright notice appears in all copies and that both the
- * above copyright notice and this permission notice appear in supporting
- * documentation, and that the name of the University of Washington not be
- * used in advertising or publicity pertaining to distribution of the software
- * without specific, written prior permission. This software is made
- * available "as is", and
- * THE UNIVERSITY OF WASHINGTON DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED,
- * WITH REGARD TO THIS SOFTWARE, INCLUDING WITHOUT LIMITATION ALL IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, AND IN
- * NO EVENT SHALL THE UNIVERSITY OF WASHINGTON BE LIABLE FOR ANY SPECIAL,
- * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
- * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, TORT
- * (INCLUDING NEGLIGENCE) OR STRICT LIABILITY, ARISING OUT OF OR IN CONNECTION
- * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- */
- /*
- * The routines in this file read and write ASCII files from the disk. All of
- * the knowledge about files are here. A better message writing scheme should
- * be used.
- */
- #include <stdio.h>
- #include "estruct.h"
- #include "edef.h"
-
-
- FILE *ffp; /* File pointer, all functions. */
-
- /*
- * Open a file for reading.
- */
- ffropen(fn)
- char *fn;
- {
- if ((ffp=fopen(fn, "r")) == NULL)
- return (FIOFNF);
- return (FIOSUC);
- }
-
-
- /*
- * Write a line to the already opened file. The "buf" points to the buffer,
- * and the "nbuf" is its length, less the free newline. Return the status.
- * Check only at the newline.
- */
- ffputline(buf, nbuf)
- char buf[];
- {
- register int i;
-
- for (i = 0; i < nbuf; ++i)
- fputc(buf[i]&0xFF, ffp);
-
- fputc('\n', ffp);
-
- if (ferror(ffp)) {
- emlwrite("Write I/O error");
- return (FIOERR);
- }
-
- return (FIOSUC);
- }
-
- /*
- * Read a line from a file, and store the bytes in the supplied buffer. The
- * "nbuf" is the length of the buffer. Complain about long lines and lines
- * at the end of the file that don't have a newline present. Check for I/O
- * errors too. Return status.
- */
- ffgetline(buf, nbuf)
- register char buf[];
- {
- register int c;
- register int i;
-
- i = 0;
-
- while ((c = fgetc(ffp)) != EOF && c != '\n') {
- if (i >= nbuf-2) {
- buf[nbuf - 2] = c; /* store last char read */
- buf[nbuf - 1] = 0; /* and terminate it */
- emlwrite("File has long line");
- return (FIOLNG);
- }
- buf[i++] = c;
- }
-
- if (c == EOF) {
- if (ferror(ffp)) {
- emlwrite("File read error");
- return (FIOERR);
- }
-
- if (i != 0) {
- emlwrite("File has funny line at EOF");
- return (FIOERR);
- }
- return (FIOEOF);
- }
-
- buf[i] = 0;
- return (FIOSUC);
- }
-