1 #ifndef HEADER_CURL_STRTOOFFT_H
2 #define HEADER_CURL_STRTOOFFT_H
3 /***************************************************************************
4  *                                  _   _ ____  _
5  *  Project                     ___| | | |  _ \| |
6  *                             / __| | | | |_) | |
7  *                            | (__| |_| |  _ <| |___
8  *                             \___|\___/|_| \_\_____|
9  *
10  * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
11  *
12  * This software is licensed as described in the file COPYING, which
13  * you should have received as part of this distribution. The terms
14  * are also available at http://curl.haxx.se/docs/copyright.html.
15  *
16  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
17  * copies of the Software, and permit persons to whom the Software is
18  * furnished to do so, under the terms of the COPYING file.
19  *
20  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21  * KIND, either express or implied.
22  *
23  ***************************************************************************/
24 
25 #include "curl_setup.h"
26 
27 /*
28  * Determine which string to integral data type conversion function we use
29  * to implement string conversion to our curl_off_t integral data type.
30  *
31  * Notice that curl_off_t might be 64 or 32 bit wide, and that it might use
32  * an underlying data type which might be 'long', 'int64_t', 'long long' or
33  * '__int64' and more remotely other data types.
34  *
35  * On systems where the size of curl_off_t is greater than the size of 'long'
36  * the conversion function to use is strtoll() if it is available, otherwise,
37  * we emulate its functionality with our own clone.
38  *
39  * On systems where the size of curl_off_t is smaller or equal than the size
40  * of 'long' the conversion function to use is strtol().
41  */
42 
43 #if (CURL_SIZEOF_CURL_OFF_T > CURL_SIZEOF_LONG)
44 #  ifdef HAVE_STRTOLL
45 #    define curlx_strtoofft strtoll
46 #  else
47 #    if defined(_MSC_VER) && (_MSC_VER >= 1300) && (_INTEGRAL_MAX_BITS >= 64)
48 #      if defined(_SAL_VERSION)
49          _Check_return_ _CRTIMP __int64 __cdecl _strtoi64(
50              _In_z_ const char *_String,
51              _Out_opt_ _Deref_post_z_ char **_EndPtr, _In_ int _Radix);
52 #      else
53          _CRTIMP __int64 __cdecl _strtoi64(const char *_String,
54                                            char **_EndPtr, int _Radix);
55 #      endif
56 #      define curlx_strtoofft _strtoi64
57 #    else
58        curl_off_t curlx_strtoll(const char *nptr, char **endptr, int base);
59 #      define curlx_strtoofft curlx_strtoll
60 #      define NEED_CURL_STRTOLL 1
61 #    endif
62 #  endif
63 #else
64 #  define curlx_strtoofft strtol
65 #endif
66 
67 #if (CURL_SIZEOF_CURL_OFF_T == 4)
68 #  define CURL_OFF_T_MAX CURL_OFF_T_C(0x7FFFFFFF)
69 #else
70    /* assume CURL_SIZEOF_CURL_OFF_T == 8 */
71 #  define CURL_OFF_T_MAX CURL_OFF_T_C(0x7FFFFFFFFFFFFFFF)
72 #endif
73 #define CURL_OFF_T_MIN (-CURL_OFF_T_MAX - CURL_OFF_T_C(1))
74 
75 #endif /* HEADER_CURL_STRTOOFFT_H */
76