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zip_get_name.c
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00001 /*
00002   zip_get_name.c -- get filename for a file in zip file
00003   Copyright (C) 1999-2007 Dieter Baron and Thomas Klausner
00004 
00005   This file is part of libzip, a library to manipulate ZIP archives.
00006   The authors can be contacted at <libzip@nih.at>
00007 
00008   Redistribution and use in source and binary forms, with or without
00009   modification, are permitted provided that the following conditions
00010   are met:
00011   1. Redistributions of source code must retain the above copyright
00012      notice, this list of conditions and the following disclaimer.
00013   2. Redistributions in binary form must reproduce the above copyright
00014      notice, this list of conditions and the following disclaimer in
00015      the documentation and/or other materials provided with the
00016      distribution.
00017   3. The names of the authors may not be used to endorse or promote
00018      products derived from this software without specific prior
00019      written permission.
00020  
00021   THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
00022   OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
00023   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00024   ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
00025   DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00026   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
00027   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00028   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
00029   IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
00030   OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
00031   IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00032 */
00033 
00034 
00035 
00036 #include "zipint.h"
00037 
00038 
00039 
00040 ZIP_EXTERN(const char *)
00041 zip_get_name(struct zip *za, int idx, int flags)
00042 {
00043     return _zip_get_name(za, idx, flags, &za->error);
00044 }
00045 
00046 
00047 
00048 const char *
00049 _zip_get_name(struct zip *za, int idx, int flags, struct zip_error *error)
00050 {
00051     if (idx < 0 || idx >= za->nentry) {
00052        _zip_error_set(error, ZIP_ER_INVAL, 0);
00053        return NULL;
00054     }
00055 
00056     if ((flags & ZIP_FL_UNCHANGED) == 0) {
00057        if (za->entry[idx].state == ZIP_ST_DELETED) {
00058            _zip_error_set(error, ZIP_ER_DELETED, 0);
00059            return NULL;
00060        }
00061        if (za->entry[idx].ch_filename)
00062            return za->entry[idx].ch_filename;
00063     }
00064 
00065     if (za->cdir == NULL || idx >= za->cdir->nentry) {
00066        _zip_error_set(error, ZIP_ER_INVAL, 0);
00067        return NULL;
00068     }
00069     
00070     return za->cdir->entry[idx].filename;
00071 }