~ubuntu-branches/debian/squeeze/alpine/squeeze

1 by Asheesh Laroia
Import upstream version 0.82+dfsg
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#if !defined(lint) && !defined(DOS)
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static char rcsid[] = "$Id: popen.c 165 2006-10-04 01:09:47Z jpf@u.washington.edu $";
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#endif
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/*
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 * ========================================================================
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 * Copyright 2006 University of Washington
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 *     http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * ========================================================================
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 */
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#include <system.h>
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#include <general.h>
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#include "../estruct.h"
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/*
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 * P_open - run the given command in a sub-shell returning a file pointer
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 *	    from which to read the output
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 *
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 * note:
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 *	For OS's other than unix, you will have to rewrite this function.
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 *	Hopefully it'll be easy to exec the command into a temporary file, 
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 *	and return a file pointer to that opened file or something.
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 */
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int
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P_open(char *s)
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{
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#if	HAVE_POPEN
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    extern FIOINFO g_pico_fio;
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    g_pico_fio.flags = FIOINFO_READ;
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    g_pico_fio.name = "pipe";
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    if((g_pico_fio.fp = popen(s, "r")) != NULL)
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      return(FIOSUC);
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    return(FIOERR);
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#else
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    /* Windows never did this, but piping has been done elsewhere */
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    return(0);
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#endif
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}
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/*
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 * P_close - close the given descriptor
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 *
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 */
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void
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P_close(void)
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{
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#if	HAVE_PCLOSE
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    extern FIOINFO g_pico_fio;
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    if(g_pico_fio.fp)
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      (void) pclose(g_pico_fio.fp);
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#endif
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}