Home | History | Annotate | Download | only in lib 
      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 (at) 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