Revert "Update to 7.40.1"

[platform/upstream/curl.git] / lib / strtoofft.h

diff --git a/lib/strtoofft.h b/lib/strtoofft.h
index 4bb3b8f..b812a67 100644 (file)
--- a/lib/strtoofft.h
+++ b/lib/strtoofft.h
@@ -1,16 +1,18 @@
+#ifndef HEADER_CURL_STRTOOFFT_H
+#define HEADER_CURL_STRTOOFFT_H
 /***************************************************************************
- *                                  _   _ ____  _     
- *  Project                     ___| | | |  _ \| |    
- *                             / __| | | | |_) | |    
- *                            | (__| |_| |  _ <| |___ 
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2004, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
  * are also available at http://curl.haxx.se/docs/copyright.html.
- * 
+ *
  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
  * copies of the Software, and permit persons to whom the Software is
  * furnished to do so, under the terms of the COPYING file.
@@ -18,33 +20,49 @@
  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  * KIND, either express or implied.
  *
- * $Id$
  ***************************************************************************/
 
-#ifndef _CURL_STRTOOFFT_R_H
-#define _CURL_STRTOOFFT_R_H
-
-#include "setup.h"
-#include <stddef.h>
-#include <curl/curl.h> /* for the curl_off_t type */
+#include "curl_setup.h"
 
-/* Determine what type of file offset conversion handling we wish to use.  For
- * systems with a 32-bit curl_off_t type, we should use strtol.  For systems
- * with a 64-bit curl_off_t type, we should use strtoll if it exists, and if
- * not, should try to emulate its functionality.  At any rate, we define
- * 'strtoofft' such that it can be used to work with curl_off_t's regardless.
+/*
+ * Determine which string to integral data type conversion function we use
+ * to implement string conversion to our curl_off_t integral data type.
+ *
+ * Notice that curl_off_t might be 64 or 32 bit wide, and that it might use
+ * an underlying data type which might be 'long', 'int64_t', 'long long' or
+ * '__int64' and more remotely other data types.
+ *
+ * On systems where the size of curl_off_t is greater than the size of 'long'
+ * the conversion function to use is strtoll() if it is available, otherwise,
+ * we emulate its functionality with our own clone.
+ *
+ * On systems where the size of curl_off_t is smaller or equal than the size
+ * of 'long' the conversion function to use is strtol().
  */
-#if SIZEOF_CURL_OFF_T > 4
-#if HAVE_STRTOLL
-#define strtoofft strtoll
-#else
-curl_off_t Curl_strtoll(const char *nptr, char **endptr, int base);
-#define strtoofft Curl_strtoll
-#define NEED_CURL_STRTOLL
-#endif
+
+#if (CURL_SIZEOF_CURL_OFF_T > CURL_SIZEOF_LONG)
+#  ifdef HAVE_STRTOLL
+#    define curlx_strtoofft strtoll
+#  else
+#    if defined(_MSC_VER) && (_MSC_VER >= 1300) && (_INTEGRAL_MAX_BITS >= 64)
+       _CRTIMP __int64 __cdecl _strtoi64(const char *, char **, int);
+#      define curlx_strtoofft _strtoi64
+#    else
+       curl_off_t curlx_strtoll(const char *nptr, char **endptr, int base);
+#      define curlx_strtoofft curlx_strtoll
+#      define NEED_CURL_STRTOLL 1
+#    endif
+#  endif
 #else
-#define strtoofft strtol
+#  define curlx_strtoofft strtol
 #endif
 
+#if (CURL_SIZEOF_CURL_OFF_T == 4)
+#  define CURL_OFF_T_MAX CURL_OFF_T_C(0x7FFFFFFF)
+#else
+   /* assume CURL_SIZEOF_CURL_OFF_T == 8 */
+#  define CURL_OFF_T_MAX CURL_OFF_T_C(0x7FFFFFFFFFFFFFFF)
 #endif
+#define CURL_OFF_T_MIN (-CURL_OFF_T_MAX - CURL_OFF_T_C(1))
 
+#endif /* HEADER_CURL_STRTOOFFT_H */