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[/] [openrisc/] [trunk/] [rtos/] [ecos-3.0/] [packages/] [redboot/] [current/] [src/] [gunzip.c] - Blame information for rev 856

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1 786 skrzyp
//==========================================================================
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//
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//      gunzip.c
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//
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//      RedBoot GZIP uncompress command
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//
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//==========================================================================
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// ####ECOSGPLCOPYRIGHTBEGIN####                                            
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// -------------------------------------------                              
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// This file is part of eCos, the Embedded Configurable Operating System.   
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// Copyright (C) 2005 Free Software Foundation, Inc.                        
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//
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// eCos is free software; you can redistribute it and/or modify it under    
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// the terms of the GNU General Public License as published by the Free     
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// Software Foundation; either version 2 or (at your option) any later      
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// version.                                                                 
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT      
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or    
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// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License    
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// for more details.                                                        
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//
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// You should have received a copy of the GNU General Public License        
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// along with eCos; if not, write to the Free Software Foundation, Inc.,    
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// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            
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//
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// As a special exception, if other files instantiate templates or use      
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// macros or inline functions from this file, or you compile this file      
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// and link it with other works to produce a work based on this file,       
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// this file does not by itself cause the resulting work to be covered by   
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// the GNU General Public License. However the source code for this file    
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// must still be made available in accordance with section (3) of the GNU   
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// General Public License v2.                                               
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//
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// This exception does not invalidate any other reasons why a work based    
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// on this file might be covered by the GNU General Public License.         
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// -------------------------------------------                              
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// ####ECOSGPLCOPYRIGHTEND####                                              
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//==========================================================================
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//#####DESCRIPTIONBEGIN####
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//
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// Author(s):    Peter Korsgaard
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// Contributors: Peter Korsgaard
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// Date:         2005-04-04
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// Purpose:      
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// Description:  
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//              
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// This code is part of RedBoot (tm).
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//
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//####DESCRIPTIONEND####
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//
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//==========================================================================
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#include <redboot.h>
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RedBoot_cmd("gunzip",
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            "Uncompress GZIP compressed data",
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            "-s <location> -d <location>",
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            do_gunzip
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    );
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void
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do_gunzip(int argc, char *argv[])
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{
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    struct option_info opts[2];
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    unsigned long src, dst;
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    bool src_set, dst_set;
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    _pipe_t pipe;
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    _pipe_t* p = &pipe;
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    int err;
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    init_opts(&opts[0], 's', true, OPTION_ARG_TYPE_NUM,
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              (void *)&src, (bool *)&src_set, "source address");
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    init_opts(&opts[1], 'd', true, OPTION_ARG_TYPE_NUM,
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              (void *)&dst, (bool *)&dst_set, "destination address");
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    if (!scan_opts(argc, argv, 1, opts, 2, 0, 0, "")) {
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        return;
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    }
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    // Must have src and dst
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    if (!src_set || !dst_set) {
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        // try to use load_address for src 
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        if (dst_set
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            && load_address >= (CYG_ADDRESS)ram_start
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            && load_address < load_address_end) {
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            src = load_address;
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            diag_printf("Decompressing from %p to %p\n",
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                        (void*)src, (void*)dst);
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        }
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        else
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        {
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            diag_printf("usage: gunzip -s <addr> -d <addr>\n");
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            return;
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        }
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    }
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    p->out_buf = (unsigned char*)dst;
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    p->out_max = p->out_size = -1;
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    p->in_buf = (unsigned char*)src;
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    p->in_avail = -1;
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    err = (*_dc_init)(p);
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    if (0 == err)
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        err = (*_dc_inflate)(p);
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    // Free used resources, do final translation of error value.
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    err = (*_dc_close)(p, err);
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    if (0 != err && p->msg) {
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       entry_address = (CYG_ADDRESS)NO_MEMORY;
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       diag_printf("Decompression error: %s\n", p->msg);
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    } else {
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        load_address     = entry_address = (CYG_ADDRESS)dst;
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        load_address_end = (CYG_ADDRESS)p->out_buf;
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        diag_printf("Decompressed %lu bytes\n",
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                    load_address_end - load_address);
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    }
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}

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