Remove ad-hoc FBX importer

This importer was the fruit of a lot of amazing reverse engineering
work by RevoluPowered, based on the original Assimp importer that was
introduced by fire.

While promising and well tuned for a specific type of FBX scenes, it
was found to have many flaws to support the many FBX exporters and
legacy models that Godot users want to use. As we currently lack a
maintainer to improve it, those issues are left unresolved and FBX
import is still sub-par in the current Godot releases.

After some experimentation, we're instead adding a new importer that
relies on Facebook's `fbx2gltf` command line tool to convert FBX to
glTF, so that we can then use our well-maintained glTF importer.
See #59653 and https://github.com/facebookincubator/FBX2glTF for details.

1 files changed, 0 insertions, 253 deletions

diff --git a/modules/fbx/fbx_parser/FBXTokenizer.cpp b/modules/fbx/fbx_parser/FBXTokenizer.cpp
deleted file mode 100644
index bac3e6d5c4..0000000000
--- a/modules/fbx/fbx_parser/FBXTokenizer.cpp
+++ /dev/null
@@ -1,253 +0,0 @@
-/*************************************************************************/
-/*  FBXTokenizer.cpp                                                     */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* 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 AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-
-/*
-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  FBXTokenizer.cpp
- *  @brief Implementation of the FBX broadphase lexer
- */
-
-// tab width for logging columns
-#define ASSIMP_FBX_TAB_WIDTH 4
-
-#include "FBXTokenizer.h"
-#include "core/string/print_string.h"
-
-namespace FBXDocParser {
-
-// ------------------------------------------------------------------------------------------------
-Token::Token(const char *p_sbegin, const char *p_send, TokenType p_type, unsigned int p_line, unsigned int p_column) :
-		sbegin(p_sbegin),
-		send(p_send),
-		type(p_type),
-		line(p_line),
-		column(p_column) {
-#ifdef DEBUG_ENABLED
-	contents = std::string(sbegin, static_cast<size_t>(send - sbegin));
-#endif
-}
-
-// ------------------------------------------------------------------------------------------------
-Token::~Token() {
-}
-
-namespace {
-
-// ------------------------------------------------------------------------------------------------
-void TokenizeError(const std::string &message, unsigned int line, unsigned int column) {
-	print_error("[FBX-Tokenize]" + String(message.c_str()) + " " + itos(line) + ":" + itos(column));
-}
-
-// process a potential data token up to 'cur', adding it to 'output_tokens'.
-// ------------------------------------------------------------------------------------------------
-void ProcessDataToken(TokenList &output_tokens, const char *&start, const char *&end,
-		unsigned int line,
-		unsigned int column,
-		TokenType type = TokenType_DATA,
-		bool must_have_token = false) {
-	if (start && end) {
-		// sanity check:
-		// tokens should have no whitespace outside quoted text and [start,end] should
-		// properly delimit the valid range.
-		bool in_double_quotes = false;
-		for (const char *c = start; c != end + 1; ++c) {
-			if (*c == '\"') {
-				in_double_quotes = !in_double_quotes;
-			}
-
-			if (!in_double_quotes && IsSpaceOrNewLine(*c)) {
-				TokenizeError("unexpected whitespace in token", line, column);
-			}
-		}
-
-		if (in_double_quotes) {
-			TokenizeError("non-terminated double quotes", line, column);
-		}
-
-		output_tokens.push_back(new_Token(start, end + 1, type, line, column));
-	} else if (must_have_token) {
-		TokenizeError("unexpected character, expected data token", line, column);
-	}
-
-	start = end = nullptr;
-}
-} // namespace
-
-// ------------------------------------------------------------------------------------------------
-void Tokenize(TokenList &output_tokens, const char *input, size_t length, bool &corrupt) {
-	// line and column numbers numbers are one-based
-	unsigned int line = 1;
-	unsigned int column = 1;
-
-	bool comment = false;
-	bool in_double_quotes = false;
-	bool pending_data_token = false;
-
-	const char *token_begin = nullptr, *token_end = nullptr;
-
-	// input (starting string), *cur the current string, column +=
-	// modified to fix strlen() and stop buffer overflow
-	for (size_t x = 0; x < length; x++) {
-		const char c = input[x];
-		const char *cur = &input[x];
-		column += (c == '\t' ? ASSIMP_FBX_TAB_WIDTH : 1);
-
-		if (IsLineEnd(c)) {
-			comment = false;
-
-			column = 0;
-			++line;
-		}
-
-		if (comment) {
-			continue;
-		}
-
-		if (in_double_quotes) {
-			if (c == '\"') {
-				in_double_quotes = false;
-				token_end = cur;
-
-				ProcessDataToken(output_tokens, token_begin, token_end, line, column);
-				pending_data_token = false;
-			}
-			continue;
-		}
-
-		switch (c) {
-			case '\"':
-				if (token_begin) {
-					TokenizeError("unexpected double-quote", line, column);
-					corrupt = true;
-					return;
-				}
-				token_begin = cur;
-				in_double_quotes = true;
-				continue;
-
-			case ';':
-				ProcessDataToken(output_tokens, token_begin, token_end, line, column);
-				comment = true;
-				continue;
-
-			case '{':
-				ProcessDataToken(output_tokens, token_begin, token_end, line, column);
-				output_tokens.push_back(new_Token(cur, cur + 1, TokenType_OPEN_BRACKET, line, column));
-				continue;
-
-			case '}':
-				ProcessDataToken(output_tokens, token_begin, token_end, line, column);
-				output_tokens.push_back(new_Token(cur, cur + 1, TokenType_CLOSE_BRACKET, line, column));
-				continue;
-
-			case ',':
-				if (pending_data_token) {
-					ProcessDataToken(output_tokens, token_begin, token_end, line, column, TokenType_DATA, true);
-				}
-				output_tokens.push_back(new_Token(cur, cur + 1, TokenType_COMMA, line, column));
-				continue;
-
-			case ':':
-				if (pending_data_token) {
-					ProcessDataToken(output_tokens, token_begin, token_end, line, column, TokenType_KEY, true);
-				} else {
-					TokenizeError("unexpected colon", line, column);
-				}
-				continue;
-		}
-
-		if (IsSpaceOrNewLine(c)) {
-			if (token_begin) {
-				// peek ahead and check if the next token is a colon in which
-				// case this counts as KEY token.
-				TokenType type = TokenType_DATA;
-				for (const char *peek = cur; *peek && IsSpaceOrNewLine(*peek); ++peek) {
-					if (*peek == ':') {
-						type = TokenType_KEY;
-						cur = peek;
-						break;
-					}
-				}
-
-				ProcessDataToken(output_tokens, token_begin, token_end, line, column, type);
-			}
-
-			pending_data_token = false;
-		} else {
-			token_end = cur;
-			if (!token_begin) {
-				token_begin = cur;
-			}
-
-			pending_data_token = true;
-		}
-	}
-}
-} // namespace FBXDocParser