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authorReinhard Tartler <siretart@tauware.de>2007-02-14 09:01:45 +0100
committerReinhard Tartler <siretart@tauware.de>2007-02-14 09:01:45 +0100
commitaa2943800f9c00823720af98da036813ebf5cd2c (patch)
tree099cc0264d32a36ab89aa3f48cbf34612c3cd225 /lib/common/ConversionString.cpp
initial commit
Diffstat (limited to 'lib/common/ConversionString.cpp')
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diff --git a/lib/common/ConversionString.cpp b/lib/common/ConversionString.cpp
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+// distribution boxbackup-0.10 (svn version: 494)
+//
+// Copyright (c) 2003 - 2006
+// Ben Summers and contributors. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1. Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// 2. Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in the
+// documentation and/or other materials provided with the distribution.
+// 3. All use of this software and associated advertising materials must
+// display the following acknowledgment:
+// This product includes software developed by Ben Summers.
+// 4. The names of the Authors may not be used to endorse or promote
+// products derived from this software without specific prior written
+// permission.
+//
+// [Where legally impermissible the Authors do not disclaim liability for
+// direct physical injury or death caused solely by defects in the software
+// unless it is modified by a third party.]
+//
+// THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
+// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+// DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT,
+// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+//
+//
+// --------------------------------------------------------------------------
+//
+// File
+// Name: ConversionString.cpp
+// Purpose: Conversions to and from strings
+// Created: 9/4/04
+//
+// --------------------------------------------------------------------------
+
+#include "Box.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <errno.h>
+
+#include "Conversion.h"
+#include "autogen_ConversionException.h"
+
+#include "MemLeakFindOn.h"
+
+// --------------------------------------------------------------------------
+//
+// Function
+// Name: BoxConvert::_ConvertStringToInt(const char *, int)
+// Purpose: Convert from string to integer, with range checking.
+// Always does signed -- no point in unsigned as C++ type checking
+// isn't up to handling it properly.
+// If a null pointer is passed in, then returns 0.
+// Created: 9/4/04
+//
+// --------------------------------------------------------------------------
+int32_t BoxConvert::_ConvertStringToInt(const char *pString, int Size)
+{
+ // Handle null strings gracefully.
+ if(pString == 0)
+ {
+ return 0;
+ }
+
+ // Check for initial validity
+ if(*pString == '\0')
+ {
+ THROW_EXCEPTION(ConversionException, CannotConvertEmptyStringToInt)
+ }
+
+ // Convert.
+ char *numEnd = 0;
+ errno = 0; // Some platforms don't reset it.
+ long r = ::strtol(pString, &numEnd, 0);
+
+ // Check that all the characters were used
+ if(*numEnd != '\0')
+ {
+ THROW_EXCEPTION(ConversionException, BadStringRepresentationOfInt)
+ }
+
+ // Error check
+ if(r == 0 && errno == EINVAL)
+ {
+ THROW_EXCEPTION(ConversionException, BadStringRepresentationOfInt)
+ }
+
+ // Range check from strtol
+ if((r == LONG_MIN || r == LONG_MAX) && errno == ERANGE)
+ {
+ THROW_EXCEPTION(ConversionException, IntOverflowInConvertFromString)
+ }
+
+ // Check range for size of integer
+ switch(Size)
+ {
+ case 32:
+ {
+ // No extra checking needed if long is an int32
+ if(sizeof(long) > sizeof(int32_t))
+ {
+ if(r <= (0 - 0x7fffffffL) || r > 0x7fffffffL)
+ {
+ THROW_EXCEPTION(ConversionException, IntOverflowInConvertFromString)
+ }
+ }
+ break;
+ }
+
+ case 16:
+ {
+ if(r <= (0 - 0x7fff) || r > 0x7fff)
+ {
+ THROW_EXCEPTION(ConversionException, IntOverflowInConvertFromString)
+ }
+ break;
+ }
+
+ case 8:
+ {
+ if(r <= (0 - 0x7f) || r > 0x7f)
+ {
+ THROW_EXCEPTION(ConversionException, IntOverflowInConvertFromString)
+ }
+ break;
+ }
+
+ default:
+ {
+ THROW_EXCEPTION(ConversionException, BadIntSize)
+ break;
+ }
+ }
+
+ // Return number
+ return r;
+}
+
+// --------------------------------------------------------------------------
+//
+// Function
+// Name: BoxConvert::_ConvertIntToString(std::string &, int32_t)
+// Purpose: Convert signed interger to a string
+// Created: 9/4/04
+//
+// --------------------------------------------------------------------------
+void BoxConvert::_ConvertIntToString(std::string &rTo, int32_t From)
+{
+ char text[64]; // size more than enough
+ ::sprintf(text, "%d", From);
+ rTo = text;
+}
+