da1f80c1f2
This reverts commit 78b22393a8.
It caused a regression in FBX import leading to crashes.
Fixes #36908.
238 lines
6.8 KiB
C++
238 lines
6.8 KiB
C++
/*
|
|
Open Asset Import Library (assimp)
|
|
----------------------------------------------------------------------
|
|
|
|
Copyright (c) 2006-2019, assimp team
|
|
|
|
|
|
All rights reserved.
|
|
|
|
Redistribution and use of this software in source and binary forms,
|
|
with or without modification, are permitted provided that the
|
|
following conditions are met:
|
|
|
|
* Redistributions of source code must retain the above
|
|
copyright notice, this list of conditions and the
|
|
following disclaimer.
|
|
|
|
* 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.
|
|
|
|
* Neither the name of the assimp team, nor the names of its
|
|
contributors may be used to endorse or promote products
|
|
derived from this software without specific prior
|
|
written permission of the assimp team.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
"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 COPYRIGHT
|
|
OWNER OR CONTRIBUTORS 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 Definition of platform independent string workers:
|
|
|
|
ASSIMP_itoa10
|
|
ASSIMP_stricmp
|
|
ASSIMP_strincmp
|
|
|
|
These functions are not consistently available on all platforms,
|
|
or the provided implementations behave too differently.
|
|
*/
|
|
#pragma once
|
|
#ifndef INCLUDED_AI_STRING_WORKERS_H
|
|
#define INCLUDED_AI_STRING_WORKERS_H
|
|
|
|
#ifdef __GNUC__
|
|
# pragma GCC system_header
|
|
#endif
|
|
|
|
#include <assimp/ai_assert.h>
|
|
#include <assimp/defs.h>
|
|
#include <assimp/StringComparison.h>
|
|
|
|
#include <string.h>
|
|
#include <stdint.h>
|
|
#include <string>
|
|
|
|
namespace Assimp {
|
|
|
|
// -------------------------------------------------------------------------------
|
|
/** @brief itoa with a fixed base 10
|
|
* 'itoa' is not consistently available on all platforms so it is quite useful
|
|
* to have a small replacement function here. No need to use a full sprintf()
|
|
* if we just want to print a number ...
|
|
* @param out Output buffer
|
|
* @param max Maximum number of characters to be written, including '\0'.
|
|
* This parameter may not be 0.
|
|
* @param number Number to be written
|
|
* @return Length of the output string, excluding the '\0'
|
|
*/
|
|
AI_FORCE_INLINE
|
|
unsigned int ASSIMP_itoa10( char* out, unsigned int max, int32_t number) {
|
|
ai_assert(NULL != out);
|
|
|
|
// write the unary minus to indicate we have a negative number
|
|
unsigned int written = 1u;
|
|
if (number < 0 && written < max) {
|
|
*out++ = '-';
|
|
++written;
|
|
number = -number;
|
|
}
|
|
|
|
// We begin with the largest number that is not zero.
|
|
int32_t cur = 1000000000; // 2147483648
|
|
bool mustPrint = false;
|
|
while (written < max) {
|
|
|
|
const unsigned int digit = number / cur;
|
|
if (mustPrint || digit > 0 || 1 == cur) {
|
|
// print all future zeroe's from now
|
|
mustPrint = true;
|
|
|
|
*out++ = '0'+static_cast<char>(digit);
|
|
|
|
++written;
|
|
number -= digit*cur;
|
|
if (1 == cur) {
|
|
break;
|
|
}
|
|
}
|
|
cur /= 10;
|
|
}
|
|
|
|
// append a terminal zero
|
|
*out++ = '\0';
|
|
return written-1;
|
|
}
|
|
|
|
// -------------------------------------------------------------------------------
|
|
/** @brief itoa with a fixed base 10 (Secure template overload)
|
|
* The compiler should choose this function if he or she is able to determine the
|
|
* size of the array automatically.
|
|
*/
|
|
template <size_t length>
|
|
AI_FORCE_INLINE
|
|
unsigned int ASSIMP_itoa10( char(& out)[length], int32_t number) {
|
|
return ASSIMP_itoa10(out,length,number);
|
|
}
|
|
|
|
// -------------------------------------------------------------------------------
|
|
/** @brief Helper function to do platform independent string comparison.
|
|
*
|
|
* This is required since stricmp() is not consistently available on
|
|
* all platforms. Some platforms use the '_' prefix, others don't even
|
|
* have such a function.
|
|
*
|
|
* @param s1 First input string
|
|
* @param s2 Second input string
|
|
* @return 0 if the given strings are identical
|
|
*/
|
|
AI_FORCE_INLINE
|
|
int ASSIMP_stricmp(const char *s1, const char *s2) {
|
|
ai_assert( NULL != s1 );
|
|
ai_assert( NULL != s2 );
|
|
|
|
#if (defined _MSC_VER)
|
|
|
|
return ::_stricmp(s1,s2);
|
|
#elif defined( __GNUC__ )
|
|
|
|
return ::strcasecmp(s1,s2);
|
|
#else
|
|
|
|
char c1, c2;
|
|
do {
|
|
c1 = tolower(*s1++);
|
|
c2 = tolower(*s2++);
|
|
}
|
|
while ( c1 && (c1 == c2) );
|
|
return c1 - c2;
|
|
#endif
|
|
}
|
|
|
|
// -------------------------------------------------------------------------------
|
|
/** @brief Case independent comparison of two std::strings
|
|
*
|
|
* @param a First string
|
|
* @param b Second string
|
|
* @return 0 if a == b
|
|
*/
|
|
AI_FORCE_INLINE
|
|
int ASSIMP_stricmp(const std::string& a, const std::string& b) {
|
|
int i = (int)b.length()-(int)a.length();
|
|
return (i ? i : ASSIMP_stricmp(a.c_str(),b.c_str()));
|
|
}
|
|
|
|
// -------------------------------------------------------------------------------
|
|
/** @brief Helper function to do platform independent string comparison.
|
|
*
|
|
* This is required since strincmp() is not consistently available on
|
|
* all platforms. Some platforms use the '_' prefix, others don't even
|
|
* have such a function.
|
|
*
|
|
* @param s1 First input string
|
|
* @param s2 Second input string
|
|
* @param n Macimum number of characters to compare
|
|
* @return 0 if the given strings are identical
|
|
*/
|
|
AI_FORCE_INLINE
|
|
int ASSIMP_strincmp(const char *s1, const char *s2, unsigned int n) {
|
|
ai_assert( NULL != s1 );
|
|
ai_assert( NULL != s2 );
|
|
if ( !n ) {
|
|
return 0;
|
|
}
|
|
|
|
#if (defined _MSC_VER)
|
|
|
|
return ::_strnicmp(s1,s2,n);
|
|
|
|
#elif defined( __GNUC__ )
|
|
|
|
return ::strncasecmp(s1,s2, n);
|
|
|
|
#else
|
|
char c1, c2;
|
|
unsigned int p = 0;
|
|
do
|
|
{
|
|
if (p++ >= n)return 0;
|
|
c1 = tolower(*s1++);
|
|
c2 = tolower(*s2++);
|
|
}
|
|
while ( c1 && (c1 == c2) );
|
|
|
|
return c1 - c2;
|
|
#endif
|
|
}
|
|
|
|
|
|
// -------------------------------------------------------------------------------
|
|
/** @brief Evaluates an integer power
|
|
*
|
|
* todo: move somewhere where it fits better in than here
|
|
*/
|
|
AI_FORCE_INLINE
|
|
unsigned int integer_pow( unsigned int base, unsigned int power ) {
|
|
unsigned int res = 1;
|
|
for ( unsigned int i = 0; i < power; ++i ) {
|
|
res *= base;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
} // end of namespace
|
|
|
|
#endif // ! AI_STRINGCOMPARISON_H_INC
|