add assimp submodule

1 files changed, 273 insertions, 0 deletions

diff --git a/src/mesh/assimp-master/include/assimp/LineSplitter.h b/src/mesh/assimp-master/include/assimp/LineSplitter.h
new file mode 100644
index 0000000..a8aa665
--- /dev/null
+++ b/src/mesh/assimp-master/include/assimp/LineSplitter.h
@@ -0,0 +1,273 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, 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  LineSplitter.h
+ *  @brief LineSplitter, a helper class to iterate through all lines
+ *    of a file easily. Works with StreamReader.
+ */
+#pragma once
+#ifndef INCLUDED_LINE_SPLITTER_H
+#define INCLUDED_LINE_SPLITTER_H
+
+#ifdef __GNUC__
+#   pragma GCC system_header
+#endif
+
+#include <stdexcept>
+#include <assimp/StreamReader.h>
+#include <assimp/ParsingUtils.h>
+
+namespace Assimp {
+
+// ------------------------------------------------------------------------------------------------
+/** Usage:
+@code
+for(LineSplitter splitter(stream);splitter;++splitter) {
+
+    if (*splitter == "hi!") {
+       ...
+    }
+    else if (splitter->substr(0,5) == "hello") {
+       ...
+       // access the third token in the line (tokens are space-separated)
+       if (strtol(splitter[2]) > 5) { .. }
+    }
+
+    ASSIMP_LOG_VERBOSE_DEBUG("Current line is: ", splitter.get_index());
+}
+@endcode
+*/
+// ------------------------------------------------------------------------------------------------
+class LineSplitter {
+public:
+    typedef size_t line_idx;
+
+    // -----------------------------------------
+    /** construct from existing stream reader
+    note: trim is *always* assumed true if skyp_empty_lines==true
+    */
+    LineSplitter(StreamReaderLE& stream, bool skip_empty_lines = true, bool trim = true);
+
+    ~LineSplitter();
+
+    // -----------------------------------------
+    /** pseudo-iterator increment */
+    LineSplitter& operator++();
+
+    // -----------------------------------------
+    LineSplitter& operator++(int);
+
+    // -----------------------------------------
+    /** get a pointer to the beginning of a particular token */
+    const char* operator[] (size_t idx) const;
+
+    // -----------------------------------------
+    /** extract the start positions of N tokens from the current line*/
+    template <size_t N>
+    void get_tokens(const char* (&tokens)[N]) const;
+
+    // -----------------------------------------
+    /** member access */
+    const std::string* operator -> () const;
+
+    std::string operator* () const;
+
+    // -----------------------------------------
+    /** boolean context */
+    operator bool() const;
+
+    // -----------------------------------------
+    /** line indices are zero-based, empty lines are included */
+    operator line_idx() const;
+
+    line_idx get_index() const;
+
+    // -----------------------------------------
+    /** access the underlying stream object */
+    StreamReaderLE& get_stream();
+
+    // -----------------------------------------
+    /** !strcmp((*this)->substr(0,strlen(check)),check) */
+    bool match_start(const char* check);
+
+    // -----------------------------------------
+    /** swallow the next call to ++, return the previous value. */
+    void swallow_next_increment();
+
+    LineSplitter( const LineSplitter & ) = delete;
+    LineSplitter(LineSplitter &&) = delete;
+    LineSplitter &operator = ( const LineSplitter & ) = delete;
+
+private:
+    line_idx mIdx;
+    std::string mCur;
+    StreamReaderLE& mStream;
+    bool mSwallow, mSkip_empty_lines, mTrim;
+};
+
+AI_FORCE_INLINE LineSplitter::LineSplitter(StreamReaderLE& stream, bool skip_empty_lines, bool trim ) :
+        mIdx(0),
+        mCur(),
+        mStream(stream),
+        mSwallow(),
+        mSkip_empty_lines(skip_empty_lines),
+        mTrim(trim) {
+    mCur.reserve(1024);
+    operator++();
+    mIdx = 0;
+}
+
+AI_FORCE_INLINE LineSplitter::~LineSplitter() {
+    // empty
+}
+
+AI_FORCE_INLINE LineSplitter& LineSplitter::operator++() {
+    if (mSwallow) {
+        mSwallow = false;
+        return *this;
+    }
+
+    if (!*this) {
+        throw std::logic_error("End of file, no more lines to be retrieved.");
+    }
+
+    char s;
+    mCur.clear();
+    while (mStream.GetRemainingSize() && (s = mStream.GetI1(), 1)) {
+        if (s == '\n' || s == '\r') {
+            if (mSkip_empty_lines) {
+                while (mStream.GetRemainingSize() && ((s = mStream.GetI1()) == ' ' || s == '\r' || s == '\n'));
+                if (mStream.GetRemainingSize()) {
+                    mStream.IncPtr(-1);
+                }
+            } else {
+                // skip both potential line terminators but don't read past this line.
+                if (mStream.GetRemainingSize() && (s == '\r' && mStream.GetI1() != '\n')) {
+                    mStream.IncPtr(-1);
+                }
+                if (mTrim) {
+                    while (mStream.GetRemainingSize() && ((s = mStream.GetI1()) == ' ' || s == '\t'));
+                    if (mStream.GetRemainingSize()) {
+                        mStream.IncPtr(-1);
+                    }
+                }
+            }
+            break;
+        }
+        mCur += s;
+    }
+    ++mIdx;
+
+    return *this;
+}
+
+AI_FORCE_INLINE LineSplitter &LineSplitter::operator++(int) {
+    return ++(*this);
+}
+
+AI_FORCE_INLINE const char *LineSplitter::operator[] (size_t idx) const {
+    const char* s = operator->()->c_str();
+
+    SkipSpaces(&s);
+    for (size_t i = 0; i < idx; ++i) {
+        for (; !IsSpace(*s); ++s) {
+            if (IsLineEnd(*s)) {
+                throw std::range_error("Token index out of range, EOL reached");
+            }
+        }
+        SkipSpaces(&s);
+    }
+    return s;
+}
+
+template <size_t N>
+AI_FORCE_INLINE void LineSplitter::get_tokens(const char* (&tokens)[N]) const {
+    const char* s = operator->()->c_str();
+
+    SkipSpaces(&s);
+    for (size_t i = 0; i < N; ++i) {
+        if (IsLineEnd(*s)) {
+            throw std::range_error("Token count out of range, EOL reached");
+        }
+        tokens[i] = s;
+
+        for (; *s && !IsSpace(*s); ++s);
+        SkipSpaces(&s);
+    }
+}
+
+AI_FORCE_INLINE const std::string* LineSplitter::operator -> () const {
+    return &mCur;
+}
+
+AI_FORCE_INLINE std::string LineSplitter::operator* () const {
+    return mCur;
+}
+
+AI_FORCE_INLINE LineSplitter::operator bool() const {
+    return mStream.GetRemainingSize() > 0;
+}
+
+AI_FORCE_INLINE LineSplitter::operator line_idx() const {
+    return mIdx;
+}
+
+AI_FORCE_INLINE LineSplitter::line_idx LineSplitter::get_index() const {
+    return mIdx;
+}
+
+AI_FORCE_INLINE StreamReaderLE &LineSplitter::get_stream() {
+    return mStream;
+}
+
+AI_FORCE_INLINE bool LineSplitter::match_start(const char* check) {
+    const size_t len = ::strlen(check);
+
+    return len <= mCur.length() && std::equal(check, check + len, mCur.begin());
+}
+
+AI_FORCE_INLINE void LineSplitter::swallow_next_increment() {
+    mSwallow = true;
+}
+
+} // Namespace Assimp
+
+#endif // INCLUDED_LINE_SPLITTER_H