2 * CDE - Common Desktop Environment
4 * Copyright (c) 1993-2012, The Open Group. All rights reserved.
6 * These libraries and programs are free software; you can
7 * redistribute them and/or modify them under the terms of the GNU
8 * Lesser General Public License as published by the Free Software
9 * Foundation; either version 2 of the License, or (at your option)
12 * These libraries and programs are distributed in the hope that
13 * they will be useful, but WITHOUT ANY WARRANTY; without even the
14 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 * PURPOSE. See the GNU Lesser General Public License for more
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with these librararies and programs; if not, write
20 * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
21 * Floor, Boston, MA 02110-1301 USA
23 /* $XConsortium: revlib.c /main/3 1995/11/01 19:07:43 rswiston $ */
24 /***************************************************************
26 * AT&T - PROPRIETARY *
28 * THIS IS PROPRIETARY SOURCE CODE LICENSED BY *
31 * Copyright (c) 1995 AT&T Corp. *
32 * All Rights Reserved *
34 * This software is licensed by AT&T Corp. *
35 * under the terms and conditions of the license in *
36 * http://www.research.att.com/orgs/ssr/book/reuse *
38 * This software was created by the *
39 * Software Engineering Research Department *
40 * AT&T Bell Laboratories *
42 * For further information contact *
43 * gsf@research.att.com *
45 ***************************************************************/
47 /* : : generated by proto : : */
49 #if !defined(__PROTO__)
50 #if defined(__STDC__) || defined(__cplusplus) || defined(_proto) || defined(c_plusplus)
51 #if defined(__cplusplus)
52 #define __MANGLE__ "C"
57 #define __PROTO__(x) x
59 #define __PARAM__(n,o) n
60 #if !defined(__STDC__) && !defined(__cplusplus)
61 #if !defined(c_plusplus)
72 #define __PROTO__(x) ()
73 #define __OTORP__(x) x
74 #define __PARAM__(n,o) o
82 #if defined(__cplusplus) || defined(c_plusplus)
83 #define __VARARG__ ...
87 #if defined(__STDARG__)
88 #define __VA_START__(p,a) va_start(p,a)
90 #define __VA_START__(p,a) va_start(p)
95 #define BUFSIZE SF_BUFSIZE
96 #define rounddown(n,size) (((n)-1)&~((size)-1))
99 * copy the lines starting at offset <start> from in <in> to <out>
102 int rev_line __PARAM__((Sfio_t *in, Sfio_t *out, off_t start), (in, out, start)) __OTORP__(Sfio_t *in; Sfio_t *out; off_t start;){
103 register char *cp, *cpold;
104 register int n, nleft=0;
107 if(sfseek(in,(off_t)0,SEEK_CUR) < 0)
109 Sfio_t *tmp = sftmp(4*SF_BUFSIZE);
113 sfmove(in, (Sfio_t*)0, (long)start, -1);
114 if(sfmove(in, tmp, SF_UNBOUND, -1) < 0)
119 if((offset = sfseek(in,(off_t)0,SEEK_END)) <= start)
121 offset = rounddown(offset,BUFSIZE);
130 sfseek(in, offset, SEEK_SET);
131 if((n=sfread(in, buff, n)) <=0)
146 while(*--cp != '\n');
147 if(cp==buff && n!='\n')
155 if(sfwrite(out,cp,cpold-cp) < 0)
161 else if(sfmove(in,out,nleft,-1) < 0)
172 sfseek(in, start, SEEK_SET);
173 if(sfmove(in,out,nleft,-1) < 0)