ARC - Revision history

Einstein95: /* Overview */

2015-12-17T12:42:14Z

Overview

← Older revision		Revision as of 15:42, 17 December 2015
Line 6:		Line 6:
	ARC files are compressed files.		ARC files are compressed files.

	Found in [[BCMA\|manual files] compressed with LZ-10		Found in [[BCMA\|manual files]] compressed with LZ-10

	(more compression methods might be available).		(more compression methods might be available).

Elisherer at 20:12, 29 November 2012

2012-11-29T19:12:39Z

@@ Line 4: / Line 4: @@
 == Overview ==
-ARC files are archives. Containers of files compressed with LZ-10 (more compression methods might be available).
+ARC files are compressed files.
-This is very similiar to NARC (the DS archives).
+Found in [[BCMA|manual files] compressed with LZ-10
-== ARC header ==
+(more compression methods might be available).

Elisherer: /* File table */ correction...

2012-11-29T18:40:34Z

File table: correction...

← Older revision		Revision as of 21:40, 29 November 2012
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	\| 0x00C \|\| 4 \|\| uint32 \|\| Compressed file name offset (from the end of the table, padded to 0x10)		\| 0x00C \|\| 4 \|\| uint32 \|\| Compressed file name offset (from the end of the table, padded to 0x10)

	if (~~MSB is high~~) then this is a folder (i.e. first two nodes 'null' & '.')		if (offset & 0x01000000) then this is a folder (i.e. first two nodes 'null' & '.')
	\|-		\|-
	\| 0x004 \|\| 4 \|\| uint32 \|\| Compressed file offset		\| 0x004 \|\| 4 \|\| uint32 \|\| Compressed file offset

Elisherer: /* ARC header */ oops2..sorry

2012-11-29T17:21:13Z

ARC header: oops2..sorry

← Older revision		Revision as of 20:21, 29 November 2012
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	* First two nodes in the file table are ‘null’ and ‘.’ both have compressed file length of 7.		* First two nodes in the file table are ‘null’ and ‘.’ both have compressed file length of 7.

	=== Files ~~Data~~ ===		=== Files data ===

	* Each file is compressed using LZ-10. (Starts with 0x10 and followed by uint24 of the uncompressed file size).		* Each file is compressed using LZ-10. (Starts with 0x10 and followed by uint24 of the uncompressed file size).
	* Each file's end is padded to 0x10 besides the last one which ends with EOF.		* Each file's end is padded to 0x10 besides the last one which ends with EOF.

Elisherer: /* ARC header */ oops

2012-11-29T17:20:33Z

ARC header: oops

← Older revision		Revision as of 20:20, 29 November 2012
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	\| 0x014 \|\| 4 \|\| uint32 \|\| [[ARC#File_table\|File table]] length		\| 0x014 \|\| 4 \|\| uint32 \|\| [[ARC#File_table\|File table]] length
	\|-		\|-
	\| 0x018 \|\| 4 \|\| uint32 \|\| [[ARC#Files_data\|~~File table~~]] offset		\| 0x018 \|\| 4 \|\| uint32 \|\| [[ARC#Files_data\|Files data]] offset
	\|}		\|}

Elisherer at 18:20, 29 November 2012

2012-11-29T17:20:01Z

← Older revision		Revision as of 20:20, 29 November 2012
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	\| 0x00C \|\| 4 \|\| uint32 \|\| File's length		\| 0x00C \|\| 4 \|\| uint32 \|\| File's length
	\|-		\|-
	\| 0x010 \|\| 4 \|\| uint32 \|\| File table offset (from the beginning of the file)		\| 0x010 \|\| 4 \|\| uint32 \|\| [[ARC#File_table\|File table]] offset (from the beginning of the file)
	\|-		\|-
	\| 0x014 \|\| 4 \|\| uint32 \|\| ~~file~~ table length		\| 0x014 \|\| 4 \|\| uint32 \|\| [[ARC#File_table\|File table]] length
	\|-		\|-
	\| 0x018 \|\| 4 \|\| uint32 \|\| ~~files data~~ offset		\| 0x018 \|\| 4 \|\| uint32 \|\| [[ARC#Files_data\|File table]] offset
	\|}		\|}

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	* First two nodes in the file table are ‘null’ and ‘.’ both have compressed file length of 7.		* First two nodes in the file table are ‘null’ and ‘.’ both have compressed file length of 7.

	=== ~~File~~ Data ===		=== Files Data ===

	* Each file is compressed using LZ-10. (Starts with 0x10 and followed by uint24 of the uncompressed file size).		* Each file is compressed using LZ-10. (Starts with 0x10 and followed by uint24 of the uncompressed file size).
	* Each file's end is padded to 0x10 besides the last one which ends with EOF.		* Each file's end is padded to 0x10 besides the last one which ends with EOF.

Elisherer: Created page with "Category:File formats This page documents the format of ARC. == Overview == ARC files are archives. Containers of files compressed with LZ-10 (more compression methods migh..."

2012-11-29T17:15:14Z

Created page with "Category:File formats This page documents the format of ARC. == Overview == ARC files are archives. Containers of files compressed with LZ-10 (more compression methods migh..."

New page

[[Category:File formats]]
This page documents the format of ARC.

== Overview ==

ARC files are archives. Containers of files compressed with LZ-10 (more compression methods might be available).

This is very similiar to NARC (the DS archives).

== ARC header ==
{| class="wikitable" border="1"
! Offset !! Size !! Type !! Description
|-
| 0x000 || 4 || char[4] || Magic Number 'darc'
|-
| 0x004 || 2 || uint16 || Endianess (=0xFFFE: Little)
|-
| 0x006 || 2 || uint16 || Header's length
|-
| 0x008 || 4 || uint32 || Unknown (= 0x01000000 ?)
|-
| 0x00C || 4 || uint32 || File's length
|-
| 0x010 || 4 || uint32 || File table offset (from the beginning of the file)
|-
| 0x014 || 4 || uint32 || file table length
|-
| 0x018 || 4 || uint32 || files data offset
|}

=== File table ===

The file table starts at 0x01C.

Each file struct consists of 3 uint32:
{| class="wikitable" border="1"
! Offset !! Size !! Type !! Description
|-
| 0x00C || 4 || uint32 || Compressed file name offset (from the end of the table, padded to 0x10)

if (MSB is high) then this is a folder (i.e. first two nodes 'null' & '.')
|-
| 0x004 || 4 || uint32 || Compressed file offset
|-
| 0x008 || 4 || uint32 || Compressed file length
|}

* First two nodes in the file table are ‘null’ and ‘.’ both have compressed file length of 7.

=== File Data ===

* Each file is compressed using LZ-10. (Starts with 0x10 and followed by uint24 of the uncompressed file size).
* Each file's end is padded to 0x10 besides the last one which ends with EOF.