delete src/mesh/assimp-master

4 files changed, 0 insertions, 1048 deletions

diff --git a/src/mesh/assimp-master/contrib/utf8cpp/source/utf8/checked.h b/src/mesh/assimp-master/contrib/utf8cpp/source/utf8/checked.h
deleted file mode 100644
index 648636e..0000000
--- a/src/mesh/assimp-master/contrib/utf8cpp/source/utf8/checked.h
+++ /dev/null
@@ -1,333 +0,0 @@
-// Copyright 2006-2016 Nemanja Trifunovic
-
-/*
-Permission is hereby granted, free of charge, to any person or organization
-obtaining a copy of the software and accompanying documentation covered by
-this license (the "Software") to use, reproduce, display, distribute,
-execute, and transmit the Software, and to prepare derivative works of the
-Software, and to permit third-parties to whom the Software is furnished to
-do so, all subject to the following:
-
-The copyright notices in the Software and this entire statement, including
-the above license grant, this restriction and the following disclaimer,
-must be included in all copies of the Software, in whole or in part, and
-all derivative works of the Software, unless such copies or derivative
-works are solely in the form of machine-executable object code generated by
-a source language processor.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
-SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
-FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.
-*/
-
-
-#ifndef UTF8_FOR_CPP_CHECKED_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
-#define UTF8_FOR_CPP_CHECKED_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
-
-#include "core.h"
-#include <stdexcept>
-
-namespace utf8
-{
-    // Base for the exceptions that may be thrown from the library
-    class exception : public ::std::exception {
-    };
-
-    // Exceptions that may be thrown from the library functions.
-    class invalid_code_point : public exception {
-        uint32_t cp;
-    public:
-        invalid_code_point(uint32_t codepoint) : cp(codepoint) {}
-        virtual const char* what() const NOEXCEPT OVERRIDE { return "Invalid code point"; }
-        uint32_t code_point() const {return cp;}
-    };
-
-    class invalid_utf8 : public exception {
-        uint8_t u8;
-    public:
-        invalid_utf8 (uint8_t u) : u8(u) {}
-        virtual const char* what() const NOEXCEPT OVERRIDE { return "Invalid UTF-8"; }
-        uint8_t utf8_octet() const {return u8;}
-    };
-
-    class invalid_utf16 : public exception {
-        uint16_t u16;
-    public:
-        invalid_utf16 (uint16_t u) : u16(u) {}
-        virtual const char* what() const NOEXCEPT OVERRIDE { return "Invalid UTF-16"; }
-        uint16_t utf16_word() const {return u16;}
-    };
-
-    class not_enough_room : public exception {
-    public:
-        virtual const char* what() const NOEXCEPT OVERRIDE { return "Not enough space"; }
-    };
-
-    /// The library API - functions intended to be called by the users
-
-    template <typename octet_iterator>
-    octet_iterator append(uint32_t cp, octet_iterator result)
-    {
-        if (!utf8::internal::is_code_point_valid(cp))
-            throw invalid_code_point(cp);
-
-        if (cp < 0x80)                        // one octet
-            *(result++) = static_cast<uint8_t>(cp);
-        else if (cp < 0x800) {                // two octets
-            *(result++) = static_cast<uint8_t>((cp >> 6)            | 0xc0);
-            *(result++) = static_cast<uint8_t>((cp & 0x3f)          | 0x80);
-        }
-        else if (cp < 0x10000) {              // three octets
-            *(result++) = static_cast<uint8_t>((cp >> 12)           | 0xe0);
-            *(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f)   | 0x80);
-            *(result++) = static_cast<uint8_t>((cp & 0x3f)          | 0x80);
-        }
-        else {                                // four octets
-            *(result++) = static_cast<uint8_t>((cp >> 18)           | 0xf0);
-            *(result++) = static_cast<uint8_t>(((cp >> 12) & 0x3f)  | 0x80);
-            *(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f)   | 0x80);
-            *(result++) = static_cast<uint8_t>((cp & 0x3f)          | 0x80);
-        }
-        return result;
-    }
-
-    template <typename octet_iterator, typename output_iterator>
-    output_iterator replace_invalid(octet_iterator start, octet_iterator end, output_iterator out, uint32_t replacement)
-    {
-        while (start != end) {
-            octet_iterator sequence_start = start;
-            internal::utf_error err_code = utf8::internal::validate_next(start, end);
-            switch (err_code) {
-                case internal::UTF8_OK :
-                    for (octet_iterator it = sequence_start; it != start; ++it)
-                        *out++ = *it;
-                    break;
-                case internal::NOT_ENOUGH_ROOM:
-                    out = utf8::append (replacement, out);
-                    start = end;
-                    break;
-                case internal::INVALID_LEAD:
-                    out = utf8::append (replacement, out);
-                    ++start;
-                    break;
-                case internal::INCOMPLETE_SEQUENCE:
-                case internal::OVERLONG_SEQUENCE:
-                case internal::INVALID_CODE_POINT:
-                    out = utf8::append (replacement, out);
-                    ++start;
-                    // just one replacement mark for the sequence
-                    while (start != end && utf8::internal::is_trail(*start))
-                        ++start;
-                    break;
-            }
-        }
-        return out;
-    }
-
-    template <typename octet_iterator, typename output_iterator>
-    inline output_iterator replace_invalid(octet_iterator start, octet_iterator end, output_iterator out)
-    {
-        static const uint32_t replacement_marker = utf8::internal::mask16(0xfffd);
-        return utf8::replace_invalid(start, end, out, replacement_marker);
-    }
-
-    template <typename octet_iterator>
-    uint32_t next(octet_iterator& it, octet_iterator end)
-    {
-        uint32_t cp = 0;
-        internal::utf_error err_code = utf8::internal::validate_next(it, end, cp);
-        switch (err_code) {
-            case internal::UTF8_OK :
-                break;
-            case internal::NOT_ENOUGH_ROOM :
-                throw not_enough_room();
-            case internal::INVALID_LEAD :
-            case internal::INCOMPLETE_SEQUENCE :
-            case internal::OVERLONG_SEQUENCE :
-                throw invalid_utf8(*it);
-            case internal::INVALID_CODE_POINT :
-                throw invalid_code_point(cp);
-        }
-        return cp;
-    }
-
-    template <typename octet_iterator>
-    uint32_t peek_next(octet_iterator it, octet_iterator end)
-    {
-        return utf8::next(it, end);
-    }
-
-    template <typename octet_iterator>
-    uint32_t prior(octet_iterator& it, octet_iterator start)
-    {
-        // can't do much if it == start
-        if (it == start)
-            throw not_enough_room();
-
-        octet_iterator end = it;
-        // Go back until we hit either a lead octet or start
-        while (utf8::internal::is_trail(*(--it)))
-            if (it == start)
-                throw invalid_utf8(*it); // error - no lead byte in the sequence
-        return utf8::peek_next(it, end);
-    }
-
-    template <typename octet_iterator, typename distance_type>
-    void advance (octet_iterator& it, distance_type n, octet_iterator end)
-    {
-        const distance_type zero(0);
-        if (n < zero) {
-            // backward
-            for (distance_type i = n; i < zero; ++i)
-                utf8::prior(it, end);
-        } else {
-            // forward
-            for (distance_type i = zero; i < n; ++i)
-                utf8::next(it, end);
-        }
-    }
-
-    template <typename octet_iterator>
-    typename std::iterator_traits<octet_iterator>::difference_type
-    distance (octet_iterator first, octet_iterator last)
-    {
-        typename std::iterator_traits<octet_iterator>::difference_type dist;
-        for (dist = 0; first < last; ++dist)
-            utf8::next(first, last);
-        return dist;
-    }
-
-    template <typename u16bit_iterator, typename octet_iterator>
-    octet_iterator utf16to8 (u16bit_iterator start, u16bit_iterator end, octet_iterator result)
-    {
-        while (start != end) {
-            uint32_t cp = utf8::internal::mask16(*start++);
-            // Take care of surrogate pairs first
-            if (utf8::internal::is_lead_surrogate(cp)) {
-                if (start != end) {
-                    uint32_t trail_surrogate = utf8::internal::mask16(*start++);
-                    if (utf8::internal::is_trail_surrogate(trail_surrogate))
-                        cp = (cp << 10) + trail_surrogate + internal::SURROGATE_OFFSET;
-                    else
-                        throw invalid_utf16(static_cast<uint16_t>(trail_surrogate));
-                }
-                else
-                    throw invalid_utf16(static_cast<uint16_t>(cp));
-
-            }
-            // Lone trail surrogate
-            else if (utf8::internal::is_trail_surrogate(cp))
-                throw invalid_utf16(static_cast<uint16_t>(cp));
-
-            result = utf8::append(cp, result);
-        }
-        return result;
-    }
-
-    template <typename u16bit_iterator, typename octet_iterator>
-    u16bit_iterator utf8to16 (octet_iterator start, octet_iterator end, u16bit_iterator result)
-    {
-        while (start < end) {
-            uint32_t cp = utf8::next(start, end);
-            if (cp > 0xffff) { //make a surrogate pair
-                *result++ = static_cast<uint16_t>((cp >> 10)   + internal::LEAD_OFFSET);
-                *result++ = static_cast<uint16_t>((cp & 0x3ff) + internal::TRAIL_SURROGATE_MIN);
-            }
-            else
-                *result++ = static_cast<uint16_t>(cp);
-        }
-        return result;
-    }
-
-    template <typename octet_iterator, typename u32bit_iterator>
-    octet_iterator utf32to8 (u32bit_iterator start, u32bit_iterator end, octet_iterator result)
-    {
-        while (start != end)
-            result = utf8::append(*(start++), result);
-
-        return result;
-    }
-
-    template <typename octet_iterator, typename u32bit_iterator>
-    u32bit_iterator utf8to32 (octet_iterator start, octet_iterator end, u32bit_iterator result)
-    {
-        while (start < end)
-            (*result++) = utf8::next(start, end);
-
-        return result;
-    }
-
-    // The iterator class
-    template <typename octet_iterator>
-    class iterator {
-      octet_iterator it;
-      octet_iterator range_start;
-      octet_iterator range_end;
-      public:
-      typedef uint32_t value_type;
-      typedef uint32_t* pointer;
-      typedef uint32_t& reference;
-      typedef std::ptrdiff_t difference_type;
-      typedef std::bidirectional_iterator_tag iterator_category;
-      iterator () {}
-      explicit iterator (const octet_iterator& octet_it,
-                         const octet_iterator& rangestart,
-                         const octet_iterator& rangeend) :
-               it(octet_it), range_start(rangestart), range_end(rangeend)
-      {
-          if (it < range_start || it > range_end)
-              throw std::out_of_range("Invalid utf-8 iterator position");
-      }
-      // the default "big three" are OK
-      octet_iterator base () const { return it; }
-      uint32_t operator * () const
-      {
-          octet_iterator temp = it;
-          return utf8::next(temp, range_end);
-      }
-      bool operator == (const iterator& rhs) const
-      {
-          if (range_start != rhs.range_start || range_end != rhs.range_end)
-              throw std::logic_error("Comparing utf-8 iterators defined with different ranges");
-          return (it == rhs.it);
-      }
-      bool operator != (const iterator& rhs) const
-      {
-          return !(operator == (rhs));
-      }
-      iterator& operator ++ ()
-      {
-          utf8::next(it, range_end);
-          return *this;
-      }
-      iterator operator ++ (int)
-      {
-          iterator temp = *this;
-          utf8::next(it, range_end);
-          return temp;
-      }
-      iterator& operator -- ()
-      {
-          utf8::prior(it, range_start);
-          return *this;
-      }
-      iterator operator -- (int)
-      {
-          iterator temp = *this;
-          utf8::prior(it, range_start);
-          return temp;
-      }
-    }; // class iterator
-
-} // namespace utf8
-
-#if UTF_CPP_CPLUSPLUS >= 201103L // C++ 11 or later
-#include "cpp11.h"
-#endif // C++ 11 or later
-
-#endif //header guard
-
diff --git a/src/mesh/assimp-master/contrib/utf8cpp/source/utf8/core.h b/src/mesh/assimp-master/contrib/utf8cpp/source/utf8/core.h
deleted file mode 100644
index 244e892..0000000
--- a/src/mesh/assimp-master/contrib/utf8cpp/source/utf8/core.h
+++ /dev/null
@@ -1,338 +0,0 @@
-// Copyright 2006 Nemanja Trifunovic
-
-/*
-Permission is hereby granted, free of charge, to any person or organization
-obtaining a copy of the software and accompanying documentation covered by
-this license (the "Software") to use, reproduce, display, distribute,
-execute, and transmit the Software, and to prepare derivative works of the
-Software, and to permit third-parties to whom the Software is furnished to
-do so, all subject to the following:
-
-The copyright notices in the Software and this entire statement, including
-the above license grant, this restriction and the following disclaimer,
-must be included in all copies of the Software, in whole or in part, and
-all derivative works of the Software, unless such copies or derivative
-works are solely in the form of machine-executable object code generated by
-a source language processor.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
-SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
-FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.
-*/
-
-
-#ifndef UTF8_FOR_CPP_CORE_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
-#define UTF8_FOR_CPP_CORE_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
-
-#include <iterator>
-
-// Determine the C++ standard version.
-// If the user defines UTF_CPP_CPLUSPLUS, use that.
-// Otherwise, trust the unreliable predefined macro __cplusplus
-
-#if !defined UTF_CPP_CPLUSPLUS
-    #define UTF_CPP_CPLUSPLUS __cplusplus
-#endif
-
-#if UTF_CPP_CPLUSPLUS >= 201103L // C++ 11 or later
-    #define OVERRIDE override
-    #define NOEXCEPT noexcept
-#else // C++ 98/03
-    #define OVERRIDE
-    #define NOEXCEPT throw()
-#endif // C++ 11 or later
-
-
-namespace utf8
-{
-    // The typedefs for 8-bit, 16-bit and 32-bit unsigned integers
-    // You may need to change them to match your system.
-    // These typedefs have the same names as ones from cstdint, or boost/cstdint
-    typedef unsigned char   uint8_t;
-    typedef unsigned short  uint16_t;
-    typedef unsigned int    uint32_t;
-
-// Helper code - not intended to be directly called by the library users. May be changed at any time
-namespace internal
-{
-    // Unicode constants
-    // Leading (high) surrogates: 0xd800 - 0xdbff
-    // Trailing (low) surrogates: 0xdc00 - 0xdfff
-    const uint16_t LEAD_SURROGATE_MIN  = 0xd800u;
-    const uint16_t LEAD_SURROGATE_MAX  = 0xdbffu;
-    const uint16_t TRAIL_SURROGATE_MIN = 0xdc00u;
-    const uint16_t TRAIL_SURROGATE_MAX = 0xdfffu;
-    const uint16_t LEAD_OFFSET         = 0xd7c0u;       // LEAD_SURROGATE_MIN - (0x10000 >> 10)
-    const uint32_t SURROGATE_OFFSET    = 0xfca02400u;   // 0x10000u - (LEAD_SURROGATE_MIN << 10) - TRAIL_SURROGATE_MIN
-
-    // Maximum valid value for a Unicode code point
-    const uint32_t CODE_POINT_MAX      = 0x0010ffffu;
-
-    template<typename octet_type>
-    inline uint8_t mask8(octet_type oc)
-    {
-        return static_cast<uint8_t>(0xff & oc);
-    }
-    template<typename u16_type>
-    inline uint16_t mask16(u16_type oc)
-    {
-        return static_cast<uint16_t>(0xffff & oc);
-    }
-    template<typename octet_type>
-    inline bool is_trail(octet_type oc)
-    {
-        return ((utf8::internal::mask8(oc) >> 6) == 0x2);
-    }
-
-    template <typename u16>
-    inline bool is_lead_surrogate(u16 cp)
-    {
-        return (cp >= LEAD_SURROGATE_MIN && cp <= LEAD_SURROGATE_MAX);
-    }
-
-    template <typename u16>
-    inline bool is_trail_surrogate(u16 cp)
-    {
-        return (cp >= TRAIL_SURROGATE_MIN && cp <= TRAIL_SURROGATE_MAX);
-    }
-
-    template <typename u16>
-    inline bool is_surrogate(u16 cp)
-    {
-        return (cp >= LEAD_SURROGATE_MIN && cp <= TRAIL_SURROGATE_MAX);
-    }
-
-    template <typename u32>
-    inline bool is_code_point_valid(u32 cp)
-    {
-        return (cp <= CODE_POINT_MAX && !utf8::internal::is_surrogate(cp));
-    }
-
-    template <typename octet_iterator>
-    inline typename std::iterator_traits<octet_iterator>::difference_type
-    sequence_length(octet_iterator lead_it)
-    {
-        uint8_t lead = utf8::internal::mask8(*lead_it);
-        if (lead < 0x80)
-            return 1;
-        else if ((lead >> 5) == 0x6)
-            return 2;
-        else if ((lead >> 4) == 0xe)
-            return 3;
-        else if ((lead >> 3) == 0x1e)
-            return 4;
-        else
-            return 0;
-    }
-
-    template <typename octet_difference_type>
-    inline bool is_overlong_sequence(uint32_t cp, octet_difference_type length)
-    {
-        if (cp < 0x80) {
-            if (length != 1) 
-                return true;
-        }
-        else if (cp < 0x800) {
-            if (length != 2) 
-                return true;
-        }
-        else if (cp < 0x10000) {
-            if (length != 3) 
-                return true;
-        }
-
-        return false;
-    }
-
-    enum utf_error {UTF8_OK, NOT_ENOUGH_ROOM, INVALID_LEAD, INCOMPLETE_SEQUENCE, OVERLONG_SEQUENCE, INVALID_CODE_POINT};
-
-    /// Helper for get_sequence_x
-    template <typename octet_iterator>
-    utf_error increase_safely(octet_iterator& it, octet_iterator end)
-    {
-        if (++it == end)
-            return NOT_ENOUGH_ROOM;
-
-        if (!utf8::internal::is_trail(*it))
-            return INCOMPLETE_SEQUENCE;
-
-        return UTF8_OK;
-    }
-
-    #define UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(IT, END) {utf_error ret = increase_safely(IT, END); if (ret != UTF8_OK) return ret;}    
-
-    /// get_sequence_x functions decode utf-8 sequences of the length x
-    template <typename octet_iterator>
-    utf_error get_sequence_1(octet_iterator& it, octet_iterator end, uint32_t& code_point)
-    {
-        if (it == end)
-            return NOT_ENOUGH_ROOM;
-
-        code_point = utf8::internal::mask8(*it);
-
-        return UTF8_OK;
-    }
-
-    template <typename octet_iterator>
-    utf_error get_sequence_2(octet_iterator& it, octet_iterator end, uint32_t& code_point)
-    {
-        if (it == end) 
-            return NOT_ENOUGH_ROOM;
-
-        code_point = utf8::internal::mask8(*it);
-
-        UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
-
-        code_point = ((code_point << 6) & 0x7ff) + ((*it) & 0x3f);
-
-        return UTF8_OK;
-    }
-
-    template <typename octet_iterator>
-    utf_error get_sequence_3(octet_iterator& it, octet_iterator end, uint32_t& code_point)
-    {
-        if (it == end)
-            return NOT_ENOUGH_ROOM;
-            
-        code_point = utf8::internal::mask8(*it);
-
-        UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
-
-        code_point = ((code_point << 12) & 0xffff) + ((utf8::internal::mask8(*it) << 6) & 0xfff);
-
-        UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
-
-        code_point += (*it) & 0x3f;
-
-        return UTF8_OK;
-    }
-
-    template <typename octet_iterator>
-    utf_error get_sequence_4(octet_iterator& it, octet_iterator end, uint32_t& code_point)
-    {
-        if (it == end)
-           return NOT_ENOUGH_ROOM;
-
-        code_point = utf8::internal::mask8(*it);
-
-        UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
-
-        code_point = ((code_point << 18) & 0x1fffff) + ((utf8::internal::mask8(*it) << 12) & 0x3ffff);
-
-        UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
-
-        code_point += (utf8::internal::mask8(*it) << 6) & 0xfff;
-
-        UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
-
-        code_point += (*it) & 0x3f;
-
-        return UTF8_OK;
-    }
-
-    #undef UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR
-
-    template <typename octet_iterator>
-    utf_error validate_next(octet_iterator& it, octet_iterator end, uint32_t& code_point)
-    {
-        if (it == end)
-            return NOT_ENOUGH_ROOM;
-
-        // Save the original value of it so we can go back in case of failure
-        // Of course, it does not make much sense with i.e. stream iterators
-        octet_iterator original_it = it;
-
-        uint32_t cp = 0;
-        // Determine the sequence length based on the lead octet
-        typedef typename std::iterator_traits<octet_iterator>::difference_type octet_difference_type;
-        const octet_difference_type length = utf8::internal::sequence_length(it);
-
-        // Get trail octets and calculate the code point
-        utf_error err = UTF8_OK;
-        switch (length) {
-            case 0:
-                return INVALID_LEAD;
-            case 1:
-                err = utf8::internal::get_sequence_1(it, end, cp);
-                break;
-            case 2:
-                err = utf8::internal::get_sequence_2(it, end, cp);
-            break;
-            case 3:
-                err = utf8::internal::get_sequence_3(it, end, cp);
-            break;
-            case 4:
-                err = utf8::internal::get_sequence_4(it, end, cp);
-            break;
-        }
-
-        if (err == UTF8_OK) {
-            // Decoding succeeded. Now, security checks...
-            if (utf8::internal::is_code_point_valid(cp)) {
-                if (!utf8::internal::is_overlong_sequence(cp, length)){
-                    // Passed! Return here.
-                    code_point = cp;
-                    ++it;
-                    return UTF8_OK;
-                }
-                else
-                    err = OVERLONG_SEQUENCE;
-            }
-            else 
-                err = INVALID_CODE_POINT;
-        }
-
-        // Failure branch - restore the original value of the iterator
-        it = original_it;
-        return err;
-    }
-
-    template <typename octet_iterator>
-    inline utf_error validate_next(octet_iterator& it, octet_iterator end) {
-        uint32_t ignored;
-        return utf8::internal::validate_next(it, end, ignored);
-    }
-
-} // namespace internal
-
-    /// The library API - functions intended to be called by the users
-
-    // Byte order mark
-    const uint8_t bom[] = {0xef, 0xbb, 0xbf};
-
-    template <typename octet_iterator>
-    octet_iterator find_invalid(octet_iterator start, octet_iterator end)
-    {
-        octet_iterator result = start;
-        while (result != end) {
-            utf8::internal::utf_error err_code = utf8::internal::validate_next(result, end);
-            if (err_code != internal::UTF8_OK)
-                return result;
-        }
-        return result;
-    }
-
-    template <typename octet_iterator>
-    inline bool is_valid(octet_iterator start, octet_iterator end)
-    {
-        return (utf8::find_invalid(start, end) == end);
-    }
-
-    template <typename octet_iterator>
-    inline bool starts_with_bom (octet_iterator it, octet_iterator end)
-    {
-        return (
-            ((it != end) && (utf8::internal::mask8(*it++)) == bom[0]) &&
-            ((it != end) && (utf8::internal::mask8(*it++)) == bom[1]) &&
-            ((it != end) && (utf8::internal::mask8(*it))   == bom[2])
-           );
-    }	
-} // namespace utf8
-
-#endif // header guard
-
-
diff --git a/src/mesh/assimp-master/contrib/utf8cpp/source/utf8/cpp11.h b/src/mesh/assimp-master/contrib/utf8cpp/source/utf8/cpp11.h
deleted file mode 100644
index d93961b..0000000
--- a/src/mesh/assimp-master/contrib/utf8cpp/source/utf8/cpp11.h
+++ /dev/null
@@ -1,103 +0,0 @@
-// Copyright 2018 Nemanja Trifunovic
-
-/*
-Permission is hereby granted, free of charge, to any person or organization
-obtaining a copy of the software and accompanying documentation covered by
-this license (the "Software") to use, reproduce, display, distribute,
-execute, and transmit the Software, and to prepare derivative works of the
-Software, and to permit third-parties to whom the Software is furnished to
-do so, all subject to the following:
-
-The copyright notices in the Software and this entire statement, including
-the above license grant, this restriction and the following disclaimer,
-must be included in all copies of the Software, in whole or in part, and
-all derivative works of the Software, unless such copies or derivative
-works are solely in the form of machine-executable object code generated by
-a source language processor.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
-SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
-FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.
-*/
-
-
-#ifndef UTF8_FOR_CPP_a184c22c_d012_11e8_a8d5_f2801f1b9fd1
-#define UTF8_FOR_CPP_a184c22c_d012_11e8_a8d5_f2801f1b9fd1
-
-#include "checked.h"
-#include <string>
-
-namespace utf8
-{
-
-    inline void append(char32_t cp, std::string& s)
-    {
-        append(uint32_t(cp), std::back_inserter(s));
-    }
-
-    inline std::string utf16to8(const std::u16string& s)
-    {
-        std::string result;
-        utf16to8(s.begin(), s.end(), std::back_inserter(result));
-        return result;
-    }
-
-    inline std::u16string utf8to16(const std::string& s)
-    {
-        std::u16string result;
-        utf8to16(s.begin(), s.end(), std::back_inserter(result));
-        return result;
-    }
-
-    inline std::string utf32to8(const std::u32string& s)
-    {
-        std::string result;
-        utf32to8(s.begin(), s.end(), std::back_inserter(result));
-        return result;
-    }
-
-    inline std::u32string utf8to32(const std::string& s)
-    {
-        std::u32string result;
-        utf8to32(s.begin(), s.end(), std::back_inserter(result));
-        return result;
-    }
-
-    inline std::size_t find_invalid(const std::string& s)
-    {
-        std::string::const_iterator invalid = find_invalid(s.begin(), s.end());
-        return (invalid == s.end()) ? std::string::npos : (invalid - s.begin());
-    }
-
-    inline bool is_valid(const std::string& s)
-    {
-        return is_valid(s.begin(), s.end());
-    }
-
-    inline std::string replace_invalid(const std::string& s, char32_t replacement)
-    {
-        std::string result;
-        replace_invalid(s.begin(), s.end(), std::back_inserter(result), replacement);
-        return result;
-    }
-
-    inline std::string replace_invalid(const std::string& s)
-    {
-        std::string result;
-        replace_invalid(s.begin(), s.end(), std::back_inserter(result));
-        return result;
-    }
-
-    inline bool starts_with_bom(const std::string& s)
-    {
-        return starts_with_bom(s.begin(), s.end());
-    }
- 
-} // namespace utf8
-
-#endif // header guard
-
diff --git a/src/mesh/assimp-master/contrib/utf8cpp/source/utf8/unchecked.h b/src/mesh/assimp-master/contrib/utf8cpp/source/utf8/unchecked.h
deleted file mode 100644
index 0e1b51c..0000000
--- a/src/mesh/assimp-master/contrib/utf8cpp/source/utf8/unchecked.h
+++ /dev/null
@@ -1,274 +0,0 @@
-// Copyright 2006 Nemanja Trifunovic
-
-/*
-Permission is hereby granted, free of charge, to any person or organization
-obtaining a copy of the software and accompanying documentation covered by
-this license (the "Software") to use, reproduce, display, distribute,
-execute, and transmit the Software, and to prepare derivative works of the
-Software, and to permit third-parties to whom the Software is furnished to
-do so, all subject to the following:
-
-The copyright notices in the Software and this entire statement, including
-the above license grant, this restriction and the following disclaimer,
-must be included in all copies of the Software, in whole or in part, and
-all derivative works of the Software, unless such copies or derivative
-works are solely in the form of machine-executable object code generated by
-a source language processor.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
-SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
-FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.
-*/
-
-
-#ifndef UTF8_FOR_CPP_UNCHECKED_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
-#define UTF8_FOR_CPP_UNCHECKED_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
-
-#include "core.h"
-
-namespace utf8
-{
-    namespace unchecked
-    {
-        template <typename octet_iterator>
-        octet_iterator append(uint32_t cp, octet_iterator result)
-        {
-            if (cp < 0x80)                        // one octet
-                *(result++) = static_cast<uint8_t>(cp);
-            else if (cp < 0x800) {                // two octets
-                *(result++) = static_cast<uint8_t>((cp >> 6)          | 0xc0);
-                *(result++) = static_cast<uint8_t>((cp & 0x3f)        | 0x80);
-            }
-            else if (cp < 0x10000) {              // three octets
-                *(result++) = static_cast<uint8_t>((cp >> 12)         | 0xe0);
-                *(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f) | 0x80);
-                *(result++) = static_cast<uint8_t>((cp & 0x3f)        | 0x80);
-            }
-            else {                                // four octets
-                *(result++) = static_cast<uint8_t>((cp >> 18)         | 0xf0);
-                *(result++) = static_cast<uint8_t>(((cp >> 12) & 0x3f)| 0x80);
-                *(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f) | 0x80);
-                *(result++) = static_cast<uint8_t>((cp & 0x3f)        | 0x80);
-            }
-            return result;
-        }
-
-        template <typename octet_iterator, typename output_iterator>
-        output_iterator replace_invalid(octet_iterator start, octet_iterator end, output_iterator out, uint32_t replacement)
-        {
-            while (start != end) {
-                octet_iterator sequence_start = start;
-                internal::utf_error err_code = utf8::internal::validate_next(start, end);
-                switch (err_code) {
-                    case internal::UTF8_OK :
-                        for (octet_iterator it = sequence_start; it != start; ++it)
-                            *out++ = *it;
-                        break;
-                    case internal::NOT_ENOUGH_ROOM:
-                        out = utf8::unchecked::append (replacement, out);
-                        start = end;
-                        break;
-                    case internal::INVALID_LEAD:
-                        out = utf8::unchecked::append (replacement, out);
-                        ++start;
-                        break;
-                    case internal::INCOMPLETE_SEQUENCE:
-                    case internal::OVERLONG_SEQUENCE:
-                    case internal::INVALID_CODE_POINT:
-                        out = utf8::unchecked::append (replacement, out);
-                        ++start;
-                        // just one replacement mark for the sequence
-                        while (start != end && utf8::internal::is_trail(*start))
-                            ++start;
-                        break;
-                }
-            }
-            return out;
-        }
-
-        template <typename octet_iterator, typename output_iterator>
-        inline output_iterator replace_invalid(octet_iterator start, octet_iterator end, output_iterator out)
-        {
-            static const uint32_t replacement_marker = utf8::internal::mask16(0xfffd);
-            return utf8::unchecked::replace_invalid(start, end, out, replacement_marker);
-        }
-
-        template <typename octet_iterator>
-        uint32_t next(octet_iterator& it)
-        {
-            uint32_t cp = utf8::internal::mask8(*it);
-            typename std::iterator_traits<octet_iterator>::difference_type length = utf8::internal::sequence_length(it);
-            switch (length) {
-                case 1:
-                    break;
-                case 2:
-                    it++;
-                    cp = ((cp << 6) & 0x7ff) + ((*it) & 0x3f);
-                    break;
-                case 3:
-                    ++it; 
-                    cp = ((cp << 12) & 0xffff) + ((utf8::internal::mask8(*it) << 6) & 0xfff);
-                    ++it;
-                    cp += (*it) & 0x3f;
-                    break;
-                case 4:
-                    ++it;
-                    cp = ((cp << 18) & 0x1fffff) + ((utf8::internal::mask8(*it) << 12) & 0x3ffff);                
-                    ++it;
-                    cp += (utf8::internal::mask8(*it) << 6) & 0xfff;
-                    ++it;
-                    cp += (*it) & 0x3f; 
-                    break;
-            }
-            ++it;
-            return cp;
-        }
-
-        template <typename octet_iterator>
-        uint32_t peek_next(octet_iterator it)
-        {
-            return utf8::unchecked::next(it);
-        }
-
-        template <typename octet_iterator>
-        uint32_t prior(octet_iterator& it)
-        {
-            while (utf8::internal::is_trail(*(--it))) ;
-            octet_iterator temp = it;
-            return utf8::unchecked::next(temp);
-        }
-
-        template <typename octet_iterator, typename distance_type>
-        void advance (octet_iterator& it, distance_type n)
-        {
-            const distance_type zero(0);
-            if (n < zero) {
-                // backward
-                for (distance_type i = n; i < zero; ++i)
-                    utf8::unchecked::prior(it);
-            } else {
-                // forward
-                for (distance_type i = zero; i < n; ++i)
-                    utf8::unchecked::next(it);
-            }
-        }
-
-        template <typename octet_iterator>
-        typename std::iterator_traits<octet_iterator>::difference_type
-        distance (octet_iterator first, octet_iterator last)
-        {
-            typename std::iterator_traits<octet_iterator>::difference_type dist;
-            for (dist = 0; first < last; ++dist) 
-                utf8::unchecked::next(first);
-            return dist;
-        }
-
-        template <typename u16bit_iterator, typename octet_iterator>
-        octet_iterator utf16to8 (u16bit_iterator start, u16bit_iterator end, octet_iterator result)
-        {
-            while (start != end) {
-                uint32_t cp = utf8::internal::mask16(*start++);
-            // Take care of surrogate pairs first
-                if (utf8::internal::is_lead_surrogate(cp)) {
-                    uint32_t trail_surrogate = utf8::internal::mask16(*start++);
-                    cp = (cp << 10) + trail_surrogate + internal::SURROGATE_OFFSET;
-                }
-                result = utf8::unchecked::append(cp, result);
-            }
-            return result;
-        }
-
-        template <typename u16bit_iterator, typename octet_iterator>
-        u16bit_iterator utf8to16 (octet_iterator start, octet_iterator end, u16bit_iterator result)
-        {
-            while (start < end) {
-                uint32_t cp = utf8::unchecked::next(start);
-                if (cp > 0xffff) { //make a surrogate pair
-                    *result++ = static_cast<uint16_t>((cp >> 10)   + internal::LEAD_OFFSET);
-                    *result++ = static_cast<uint16_t>((cp & 0x3ff) + internal::TRAIL_SURROGATE_MIN);
-                }
-                else
-                    *result++ = static_cast<uint16_t>(cp);
-            }
-            return result;
-        }
-
-        template <typename octet_iterator, typename u32bit_iterator>
-        octet_iterator utf32to8 (u32bit_iterator start, u32bit_iterator end, octet_iterator result)
-        {
-            while (start != end)
-                result = utf8::unchecked::append(*(start++), result);
-
-            return result;
-        }
-
-        template <typename octet_iterator, typename u32bit_iterator>
-        u32bit_iterator utf8to32 (octet_iterator start, octet_iterator end, u32bit_iterator result)
-        {
-            while (start < end)
-                (*result++) = utf8::unchecked::next(start);
-
-            return result;
-        }
-
-        // The iterator class
-        template <typename octet_iterator>
-          class iterator {
-            octet_iterator it;
-            public:
-            typedef uint32_t value_type;
-            typedef uint32_t* pointer;
-            typedef uint32_t& reference;
-            typedef std::ptrdiff_t difference_type;
-            typedef std::bidirectional_iterator_tag iterator_category;
-            iterator () {}
-            explicit iterator (const octet_iterator& octet_it): it(octet_it) {}
-            // the default "big three" are OK
-            octet_iterator base () const { return it; }
-            uint32_t operator * () const
-            {
-                octet_iterator temp = it;
-                return utf8::unchecked::next(temp);
-            }
-            bool operator == (const iterator& rhs) const 
-            { 
-                return (it == rhs.it);
-            }
-            bool operator != (const iterator& rhs) const
-            {
-                return !(operator == (rhs));
-            }
-            iterator& operator ++ () 
-            {
-                ::std::advance(it, utf8::internal::sequence_length(it));
-                return *this;
-            }
-            iterator operator ++ (int)
-            {
-                iterator temp = *this;
-                ::std::advance(it, utf8::internal::sequence_length(it));
-                return temp;
-            }  
-            iterator& operator -- ()
-            {
-                utf8::unchecked::prior(it);
-                return *this;
-            }
-            iterator operator -- (int)
-            {
-                iterator temp = *this;
-                utf8::unchecked::prior(it);
-                return temp;
-            }
-          }; // class iterator
-
-    } // namespace utf8::unchecked
-} // namespace utf8 
-
-
-#endif // header guard
-