158 lines
4.6 KiB
C
158 lines
4.6 KiB
C
/*
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* CDE - Common Desktop Environment
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*
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* Copyright (c) 1993-2012, The Open Group. All rights reserved.
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*
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* These libraries and programs are free software; you can
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* redistribute them and/or modify them under the terms of the GNU
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* Lesser General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* These libraries and programs are distributed in the hope that
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* they will be useful, but WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU Lesser General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with these libraries and programs; if not, write
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* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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* Floor, Boston, MA 02110-1301 USA
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*/
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/* $XConsortium: head.c /main/3 1995/11/01 19:06:00 rswiston $ */
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/***************************************************************
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* *
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* AT&T - PROPRIETARY *
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* *
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* THIS IS PROPRIETARY SOURCE CODE LICENSED BY *
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* AT&T CORP. *
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* *
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* Copyright (c) 1995 AT&T Corp. *
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* All Rights Reserved *
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* *
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* This software is licensed by AT&T Corp. *
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* under the terms and conditions of the license in *
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* http://www.research.att.com/orgs/ssr/book/reuse *
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* *
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* This software was created by the *
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* Software Engineering Research Department *
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* AT&T Bell Laboratories *
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* *
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* For further information contact *
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* gsf@research.att.com *
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* *
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***************************************************************/
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/* : : generated by proto : : */
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#if !defined(__PROTO__)
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#if defined(__STDC__) || defined(__cplusplus) || defined(_proto) || defined(c_plusplus)
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#if defined(__cplusplus)
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#define __MANGLE__ "C"
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#else
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#define __MANGLE__
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#endif
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#define __STDARG__
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#define __PROTO__(x) x
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#define __OTORP__(x)
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#define __PARAM__(n,o) n
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#if !defined(__STDC__) && !defined(__cplusplus)
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#if !defined(c_plusplus)
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#define const
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#endif
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#define signed
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#define void int
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#define volatile
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#define __V_ char
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#else
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#define __V_ void
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#endif
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#else
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#define __PROTO__(x) ()
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#define __OTORP__(x) x
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#define __PARAM__(n,o) o
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#define __MANGLE__
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#define __V_ char
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#define const
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#define signed
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#define void int
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#define volatile
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#endif
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#if defined(__cplusplus) || defined(c_plusplus)
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#define __VARARG__ ...
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#else
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#define __VARARG__
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#endif
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#if defined(__STDARG__)
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#define __VA_START__(p,a) va_start(p,a)
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#else
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#define __VA_START__(p,a) va_start(p)
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#endif
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#endif
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static const char id[] = "\n@(#)head (AT&T Bell Laboratories) 04/01/92\0\n";
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#include <cmdlib.h>
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int
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b_head __PARAM__((int argc, char *argv[]), (argc, argv)) __OTORP__(int argc; char *argv[];){
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static char header_fmt[] = "\n==> %s <==\n";
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Sfio_t *fp;
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char *cp;
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long number = 10;
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off_t skip = 0;
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int n;
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int delim = '\n';
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char *format = header_fmt+1;
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NoP(id[0]);
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cmdinit(argv);
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while (n = optget(argv, "n#[lines]c#[chars]s#[skip] [file ...]")) switch (n)
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{
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case 'c':
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delim = -1;
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/* FALL THRU */
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case 'n':
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if((number = opt_info.num) <= 0)
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error(2, "%c: %d: option requires positive number", n, number);
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break;
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case 's':
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skip = opt_info.num;
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break;
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case ':':
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error(2, opt_info.arg);
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break;
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case '?':
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error(ERROR_usage(2), opt_info.arg);
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break;
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}
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argv += opt_info.index;
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argc -= opt_info.index;
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if(error_info.errors)
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error(ERROR_usage(2),optusage(NiL));
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if(cp = *argv)
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argv++;
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do
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{
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if(!cp || streq(cp,"-"))
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fp = sfstdin;
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else if(!(fp = sfopen(NiL,cp,"r")))
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{
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error(ERROR_system(0),"%s: cannot open",cp);
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error_info.errors = 1;
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continue;
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}
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if(argc>1)
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sfprintf(sfstdout,format,cp);
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format = header_fmt;
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if(skip>0)
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sfmove(fp,NiL,skip,delim);
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sfmove(fp, sfstdout,number,delim);
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if(fp!=sfstdin)
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sfclose(fp);
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}
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while(cp= *argv++);
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return(error_info.errors);
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}
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