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nif_header_ffd
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nif_header_ffd
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/**** BEGIN LICENSE BLOCK ****
BSD 3-Clause License
Copyright (c) 2023, the wind.
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. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
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 HOLDER 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.
**** END LICENCE BLOCK ****/
// Used to identify distinct blocks at the test data. Also, the first thing
// to be simplified.
// Highlighter: C#
// Machine types ...............................................................
type uint 4
type ushort 2
type byte 1
type char byte
enum Endianess byte
BIG
LITTLE
struct HeaderString
char Chars[-10]
[Text]
struct ShortString
char Value[byte] // 0-terminated (its length includes the 0)
struct ExportInfo
ShortString Value[uint] (Version <= 0x0a000102)
ShortString Value[3] (Version > 0x0a000102)
[Text]
struct SizedString
char Value[uint]
format nif
// It contains the version in a specific format: "%x.%x{.%x}{.%x}".
// A quick scan (345362 files) by a simple program reveals:
// .*Version \([0-9a-fA-F]\{1,3\}\.\?\)\{1,4\}
// There are 24 distinct varations of the above regex at my sample set;
// and 23 distinct versions.
[NifVersionString] // field attribute: create "Version" from "Signature"
HeaderString Signature
HeaderString Copyright[3] (Version <= 0x03010000)
uint Version // Replace. Option: Stop On Version Mishmash
Endianess Endianess (Version >= 0x14000004)
uint UVersion (Version >= 0x0a010000) //REPLACE {User Version}
uint NumBlocks (Version >= 0x0303000D) // num serialized objects
uint UVersion2 ((Version >= 0x0a010000) && ((UVersion >= 10)
|| ((UVersion == 1) && (Version != 0x0a020000))))
uint Unknown1 (Version >= 0x1e000002)
ExportInfo Info (Version == 0x0a000102)
ExportInfo Info ((Version >= 0x0a010000) && ((UVersion >= 10)
|| ((UVersion == 1) && (Version != 0x0a020000))))
SizedString BlockName[ushort] (Version >= 0x0a000100) // distinct
// "The upper bit appears to be a flag used for PhysX block types."?
[NifPhysXHighBit] // check for the presence of said bit
ushort BlockHash[NumBlocks] (Version >= 0x0a000100) // file order
uint BlockSize[NumBlocks] (Version >= 0x14020007) // [bytes] IIRC
uint NumStrings (Version >= 0x14010003)
uint MaxStringLength (Version >= 0x14010003)
SizedString Strings[NumStrings] (Version >= 0x14010003)
uint Unknown2 (Version >= 0x0a000100)