80 lines
2.6 KiB
C
80 lines
2.6 KiB
C
/*-
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* Copyright (c) 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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/* from: static char sccsid[] = "@(#)ex_util.c 8.4 (Berkeley) 12/9/93"; */
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static char *rcsid = "$Id: ex_util.c,v 1.2 1994/01/24 06:40:46 cgd Exp $";
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#endif /* not lint */
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#include <sys/types.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include "vi.h"
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#include "excmd.h"
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/*
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* ex_getline --
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* Return a line from the terminal.
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*/
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int
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ex_getline(sp, fp, lenp)
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SCR *sp;
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FILE *fp;
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size_t *lenp;
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{
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EX_PRIVATE *exp;
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size_t off;
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int ch;
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char *p;
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exp = EXP(sp);
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for (off = 0, p = exp->ibp;; ++off) {
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ch = getc(fp);
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if (off >= exp->ibp_len) {
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BINC_RET(sp, exp->ibp, exp->ibp_len, off + 1);
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p = exp->ibp + off;
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}
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if (ch == EOF || ch == '\n') {
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if (ch == EOF && !off)
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return (1);
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*lenp = off;
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return (0);
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}
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*p++ = ch;
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}
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/* NOTREACHED */
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}
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