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Annotation of embedaddon/php/ext/zip/lib/zip_unchange.c, revision 1.1.1.2

1.1       misho       1: /*
                      2:   zip_unchange.c -- undo changes to file in zip archive
                      3:   Copyright (C) 1999-2007 Dieter Baron and Thomas Klausner
                      4: 
                      5:   This file is part of libzip, a library to manipulate ZIP archives.
                      6:   The authors can be contacted at <libzip@nih.at>
                      7: 
                      8:   Redistribution and use in source and binary forms, with or without
                      9:   modification, are permitted provided that the following conditions
                     10:   are met:
                     11:   1. Redistributions of source code must retain the above copyright
                     12:      notice, this list of conditions and the following disclaimer.
                     13:   2. Redistributions in binary form must reproduce the above copyright
                     14:      notice, this list of conditions and the following disclaimer in
                     15:      the documentation and/or other materials provided with the
                     16:      distribution.
                     17:   3. The names of the authors may not be used to endorse or promote
                     18:      products derived from this software without specific prior
                     19:      written permission.
                     20:  
                     21:   THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
                     22:   OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
                     23:   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     24:   ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
                     25:   DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     26:   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
                     27:   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
                     28:   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
                     29:   IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
                     30:   OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
                     31:   IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     32: */
                     33: 
                     34: 
                     35: 
                     36: #include <stdlib.h>
                     37: 
                     38: #include "zipint.h"
                     39: 
                     40: 
                     41: 
                     42: ZIP_EXTERN(int)
1.1.1.2 ! misho      43: zip_unchange(struct zip *za, zip_uint64_t idx)
1.1       misho      44: {
                     45:     return _zip_unchange(za, idx, 0);
                     46: }
                     47: 
                     48: 
                     49: 
                     50: int
1.1.1.2 ! misho      51: _zip_unchange(struct zip *za, zip_uint64_t idx, int allow_duplicates)
1.1       misho      52: {
                     53:     int i;
                     54:     
1.1.1.2 ! misho      55:     if (idx >= za->nentry) {
1.1       misho      56:        _zip_error_set(&za->error, ZIP_ER_INVAL, 0);
                     57:        return -1;
                     58:     }
                     59: 
                     60:     if (za->entry[idx].ch_filename) {
                     61:        if (!allow_duplicates) {
                     62:            i = _zip_name_locate(za,
                     63:                         _zip_get_name(za, idx, ZIP_FL_UNCHANGED, NULL),
                     64:                                 0, NULL);
                     65:            if (i != -1 && i != idx) {
                     66:                _zip_error_set(&za->error, ZIP_ER_EXISTS, 0);
                     67:                return -1;
                     68:            }
                     69:        }
                     70: 
                     71:        free(za->entry[idx].ch_filename);
                     72:        za->entry[idx].ch_filename = NULL;
                     73:     }
                     74: 
1.1.1.2 ! misho      75:     free(za->entry[idx].ch_extra);
        !            76:     za->entry[idx].ch_extra = NULL;
        !            77:     za->entry[idx].ch_extra_len = -1;
1.1       misho      78:     free(za->entry[idx].ch_comment);
                     79:     za->entry[idx].ch_comment = NULL;
                     80:     za->entry[idx].ch_comment_len = -1;
                     81: 
                     82:     _zip_unchange_data(za->entry+idx);
                     83: 
                     84:     return 0;
                     85: }