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att
GitHub Repository: att/ast
 Path: blob/master/src/cmd/pax/nocom.c
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/***********************************************************************

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*                                                                      *

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*               This software is part of the ast package               *

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*          Copyright (c) 1987-2011 AT&T Intellectual Property          *

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*                      and is licensed under the                       *

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*                 Eclipse Public License, Version 1.0                  *

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*                    by AT&T Intellectual Property                     *

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*                                                                      *

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*                A copy of the License is available at                 *

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*          http://www.eclipse.org/org/documents/epl-v10.html           *

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*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *

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*                                                                      *

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*              Information and Software Systems Research               *

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*                            AT&T Research                             *

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*                           Florham Park NJ                            *

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*                                                                      *

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*                 Glenn Fowler <[email protected]>                  *

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*                                                                      *

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***********************************************************************/

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#pragma prototyped

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/*

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 * Glenn Fowler

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 * AT&T Research

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 *

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 * nocom [file ...]

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 *

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 * nocom -- strip comments from C source files

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 */

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static const char usage[] =

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"[-?\n@(#)$Id: nocom (AT&T Research) 1994-01-11 $\n]"

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USAGE_LICENSE

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"[+NAME?nocom - strip comments from C source files]"

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"[+DESCRIPTION?\bnocom\b strips \b// ...\b and \b/* ... */\b comments from"

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"	each C source \afile\a and writes the result on the standard output."

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"	Comments that span multiple lines are replaced by \bnewline\b"

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"	characters to retain the original source line numbering. If \afile\a"

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"	is omitted then the standard input is read.]"

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"\n"

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"\n[ file ... ]\n"

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"\n"

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"[+SEE ALSO?\bcc\b(1), \bwc\b(1)]"

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;

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#include <ast.h>

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#include <error.h>

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#include "nocomment.c"

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int

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main(int argc, char** argv)

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{

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	register char*		s;

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	register Sfio_t*	sp;

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	NoP(argc);

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	error_info.id = "nocom";

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	for (;;)

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	{

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		switch (optget(argv, usage))

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		{

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		case '?':

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			error(ERROR_USAGE|4, "%s", opt_info.arg);

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			break;

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		case ':':

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			error(2, "%s", opt_info.arg);

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			break;

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		}

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		break;

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	}

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	argv += opt_info.index;

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	if (error_info.errors)

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		error(ERROR_USAGE|4, "%s", optusage(NiL));

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	if (!*argv)

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	{

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		if (nocomment(sfstdin, sfstdout) < 0)

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			error(ERROR_SYSTEM|2, "write error");

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	}

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	else while (s = *argv++)

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	{

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		if (!(sp = sfopen(NiL, s, "r")))

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			error(ERROR_SYSTEM|2, "%s: cannot read", s);

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		else

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		{

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			if (nocomment(sp, sfstdout) < 0)

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				error(ERROR_SYSTEM|2, "%s: write error", s);

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			sfclose(sp);

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		}

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	}

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	return error_info.errors != 0;

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}

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