/*
*         OpenPBS (Portable Batch System) v2.3 Software License
* 
* Copyright (c) 1999-2000 Veridian Information Solutions, Inc.
* All rights reserved.
* 
* ---------------------------------------------------------------------------
* For a license to use or redistribute the OpenPBS software under conditions
* other than those described below, or to purchase support for this software,
* please contact Veridian Systems, PBS Products Department ("Licensor") at:
* 
*    www.OpenPBS.org  +1 650 967-4675                  sales@OpenPBS.org
*                        877 902-4PBS (US toll-free)
* ---------------------------------------------------------------------------
* 
* This license covers use of the OpenPBS v2.3 software (the "Software") at
* your site or location, and, for certain users, redistribution of the
* Software to other sites and locations.  Use and redistribution of
* OpenPBS v2.3 in source and binary forms, with or without modification,
* are permitted provided that all of the following conditions are met.
* After December 31, 2001, only conditions 3-6 must be met:
* 
* 1. Commercial and/or non-commercial use of the Software is permitted
*    provided a current software registration is on file at www.OpenPBS.org.
*    If use of this software contributes to a publication, product, or
*    service, proper attribution must be given; see www.OpenPBS.org/credit.html
* 
* 2. Redistribution in any form is only permitted for non-commercial,
*    non-profit purposes.  There can be no charge for the Software or any
*    software incorporating the Software.  Further, there can be no
*    expectation of revenue generated as a consequence of redistributing
*    the Software.
* 
* 3. Any Redistribution of source code must retain the above copyright notice
*    and the acknowledgment contained in paragraph 6, this list of conditions
*    and the disclaimer contained in paragraph 7.
* 
* 4. Any Redistribution in binary form must reproduce the above copyright
*    notice and the acknowledgment contained in paragraph 6, this list of
*    conditions and the disclaimer contained in paragraph 7 in the
*    documentation and/or other materials provided with the distribution.
* 
* 5. Redistributions in any form must be accompanied by information on how to
*    obtain complete source code for the OpenPBS software and any
*    modifications and/or additions to the OpenPBS software.  The source code
*    must either be included in the distribution or be available for no more
*    than the cost of distribution plus a nominal fee, and all modifications
*    and additions to the Software must be freely redistributable by any party
*    (including Licensor) without restriction.
* 
* 6. All advertising materials mentioning features or use of the Software must
*    display the following acknowledgment:
* 
*     "This product includes software developed by NASA Ames Research Center,
*     Lawrence Livermore National Laboratory, and Veridian Information 
*     Solutions, Inc.
*     Visit www.OpenPBS.org for OpenPBS software support,
*     products, and information."
* 
* 7. DISCLAIMER OF WARRANTY
* 
* THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT
* ARE EXPRESSLY DISCLAIMED.
* 
* IN NO EVENT SHALL VERIDIAN CORPORATION, ITS AFFILIATED COMPANIES, OR THE
* U.S. GOVERNMENT OR ANY OF ITS AGENCIES BE LIABLE FOR ANY DIRECT OR INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* 
* This license will be governed by the laws of the Commonwealth of Virginia,
* without reference to its choice of law rules.
*/
/*
 * soelim - eliminate .so lines from troff documents
 *
 * This simple utility is provided to eliminate the .so lines
 * from troff documents by merging in the text from the referenced
 * source file.  Some systems already come with soelim, others do not.
 *
 * Usage: soelim [-d include [-d include]...] inputfile
 *	The named input file is opened processed.  Any .so line in the
 *	input is replace by the lines from the file.
 *
 *	Output is written to standard out
 */

#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <unistd.h>
#include <stdlib.h>

char *sodir[] = { 0, 0, 0, 0, 0 };

int main(argc, argv)
	int argc;
	char *argv[];
{
	int   dofile();
	int   dirct = 0;
	FILE *filein;
	int   i;
	extern int   optind;
	extern char *optarg;

	while ((i = getopt(argc, argv, "d:")) != -1) 
		switch (i) {
		    case (int)'d':	sodir[dirct++] = optarg;
					break;

		    default:	fprintf(stderr, "Usage: %s [-d include_dir] [filename ...]\n", argv[0]);
				return 1;
		}

	if (optind < argc) {
		for (i=optind; i<argc; ++i) {
			
			filein = fopen(argv[i], "r");
			if (filein == NULL) {
				fprintf(stderr, "soelim: unable to open %s\n", argv[i]);
				return (1);
			}
			if (dofile(filein) != 0)
				return (1);
		}
	} else {
		return ( dofile(stdin) );
	}
	return (0);
}

int dofile(filein)
	FILE *filein;
{
	char buf[256];
	int  dirindex;
	int  found;
	char newfile[1024];
	FILE *newin;
	char *pc;
	char *pdir;
	char *pso;

	while (fgets(buf, 255, filein) != NULL) {
		if (strncmp(buf, ".so ", 4) == 0) {
			dirindex = 0;
			found = 0;
			pso = buf + 4;
			while (*pso == ' ')
				pso++;
			pc = pso;
			while (isspace((int)*pc) == 0)
				pc++;
			*pc = '\0';
			while ((pdir = sodir[dirindex]) != NULL) {
				(void)strcpy(newfile, pdir);
				(void)strcat(newfile, "/");
				(void)strcat(newfile, pso);

				if ((newin = fopen(newfile, "r")) != NULL) {
					found = 1;
					dofile(newin);
					break;
				}
				dirindex++;
			}
			if (found == 0) {
				/* try local directory */

				(void)strcpy(newfile, pso);
				if ((newin = fopen(newfile, "r")) != NULL) {
					dofile(newin);
				} else {
					fprintf(stderr, "Unable to find include file %s\n", pso);
					exit(1);
				}
			}

		} else {
			fputs(buf, stdout);
		}
	}
	fclose(filein);
	return (0);
}


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