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zip_error_to_str.c
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00001 /*
00002   zip_error_to_str.c -- get string representation of zip error code
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 <errno.h>
00037 #include <stdio.h>
00038 #include <stdlib.h>
00039 #include <string.h>
00040 
00041 #include "zipint.h"
00042 
00043 
00044 
00045 ZIP_EXTERN(int)
00046 zip_error_to_str(char *buf, size_t len, int ze, int se)
00047 {
00048     const char *zs, *ss;
00049 
00050     if (ze < 0 || ze >= _zip_nerr_str)
00051        return snprintf(buf, len, "Unknown error %d", ze);
00052 
00053     zs = _zip_err_str[ze];
00054        
00055     switch (_zip_err_type[ze]) {
00056     case ZIP_ET_SYS:
00057        ss = strerror(se);
00058        break;
00059        
00060     case ZIP_ET_ZLIB:
00061        ss = zError(se);
00062        break;
00063        
00064     default:
00065        ss = NULL;
00066     }
00067 
00068     return snprintf(buf, len, "%s%s%s",
00069                   zs, (ss ? ": " : ""), (ss ? ss : ""));
00070 }