Editing Talk:PlayStation archive (PSARC)

==MSELF create option==
 -m, --mself                             Create a PSARC-MSELF hybrid file for PS3, which can contain encrypted special files like SDATA, SPRX, and SPU SELF.

For rebuilding purposes is needed to verify if some of this files are present in the filelist <!-- as far i remember this option doesnt stores any data in the psarc header so it seems the only way to identify his presence is by looking at the files itself -->

==Compression levels==
In command line --level=N
*Notes
**(default = 9)
**when --level is not defined at creation time, the info about compression level in the creation process window appears with a value of 9, even when using --nocompress

{{Boxcode|content=<syntaxhighlight lang="xml">
<psarc>
	<create archive="C:\psarctests\by_file.psarc">
		<compression type="zlib" level="9" />
		...
</syntaxhighlight>}}

==PSARC structure notes==
Debian psarc Kplugin structure. From Manuel Stahl (thymythos) @ http://opendesktop.org/content/show.php/PSARC+file+header?content=162745

 <?xml version="1.0" encoding="UTF-8"?>
 <data>
   <struct name="header">
     <primitive name="magic" type="UInt32" />
     <primitive name="version" type="UInt32" />
     <primitive name="compression" type="UInt32" />
     <primitive name="TOC length" type="UInt32" />
     <primitive name="TOC entry size" type="UInt32" />
     <primitive name="num_entries" type="UInt32" />
     <primitive name="max block size" type="UInt32" />
     <primitive name="archive flags" type="UInt32" />
     <array name="TOC" length="num_entries">
       <struct name="entry">
         <array name="MD5" length="16"><primitive type="UInt8"/></array>
         <primitive name="zIndex" type="UInt32" />
         <bitfield name="length" width="40" type="unsigned" />
         <bitfield name="offset" width="40" type="unsigned" />
       </struct>
     </array>
     <array name="block sizes" length="num_entries">
       <bitfield name="size" width="16" type="unsigned" /><!-- only valid for "max block size" == 2^16 -->
     </array>
   </struct>
 </data>

PSARC header example:

 '''Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F'''
 00000000  <span style="background:#ff6666;">50 53 41 52</span> <span style="background:#66ff66;">00 01 00 04</span> <span style="background:#ffff66;">7A 6C 69 62</span> <span style="background:#6666ff;">00 01 23 BA</span>  PSAR....zlib..#º
 00000010  <span style="background:#dd00dd;">00 00 00 1E</span> <span style="background:#dddd00;">00 00 09 16</span> <span style="background:#dddddd;">00 01 00 00</span> <span style="background:#d0000d;">00 00 00 02</span>  ................
 00000020  <span style="background:#ff6666;">00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00</span>  ................
 00000030  <span style="background:#ff6666;">00 00 00 00 00 00</span> <span style="background:#66ff66;">01 79 D9 00</span> 00 01 23 BA A9 A6  .......yÙ...#º©¦
 00000040  AB EE E6 73 40 2A E6 C3 37 24 3F C1 81 16 00 00  «îæs@*æÃ7$?Á....
 00000050  00 02 00 00 00 1D 90 00 00 01 45 3B 5A 08 E7 AC  ..........E;Z.ç¬

{| class="wikitable"
|-
! !! Offset !! Size !! Name !! Example !! Value (conversion) !! Notes
|-
|rowspan="8" style="background-color:#50534152; color:#000FFF;"|'''Header'''
| style="background-color:#ff6666;" | 0x00 || style="background-color:#ff6666;" | 0x04 || '''magic''' || 50 53 41 52 || PSAR || '''P'''lay'''S'''tation '''Ar'''chive
|-
| style="background-color:#66ff66;" | 0x04 || style="background-color:#66ff66;" | 0x04 || '''version''' || 00 01 00 04 || v1.4 || First 2 bytes is the main version, next 2 bytes is the subversion and are processed separatedlly, so 0001.0004 is "translated" to 1.4 by the system
|-
| style="background-color:#ffff66;" | 0x08 || style="background-color:#ffff66;" | 0x04 || '''compression type''' || 7A 6C 69 62 || zlib || zlib (default) or lzma
|-
| style="background-color:#6666ff;" | 0x0C || style="background-color:#6666ff;" | 0x04 || '''table of content length''' || 00 01 23 BA || 0x123BA || 
|-
| style="background-color:#dd00dd;" | 0x10 || style="background-color:#dd00dd;" | 0x04 || '''table of content entries size''' || 00 00 00 1E || 30 Bytes || Default is 30 bytes
|-
| style="background-color:#dddd00;" | 0x14 || style="background-color:#dddd00;" | 0x04 || '''number of entries''' || 00 00 09 16 || 1+2325 files || The filecount includes the "file path/names definitions" as an additionall file always placed at first position in the list and without an assigned ID
|-
| style="background-color:#dddddd;" | 0x18 || style="background-color:#dddddd;" | 0x04 || '''block size''' || 00 01 00 00 || 65536 Bytes || Default is 65536 Bytes
|-
| style="background-color:#d0000d;" | 0x1C || style="background-color:#d0000d;" | 0x04 || '''archive flags''' || 00 00 00 02 || 2 || Default is 2. Unknown yet but is a "bit value" so 2 is a single flag
*
*
|-
|rowspan="2" style="background-color:#50534152; color:#000FFF;"|'''TOC'''
| style="background-color:#ff6666;" | 0x20 || style="background-color:#ff6666;" | 0x16 || '''name digest''' || 00 00 ... 00 00  || - || 128-bit md5 hash
|-
| style="background-color:#66ff66;" | 0x36 || style="background-color:#66ff66;" | 0x04 || '''index list''' || - || - || Size of the (compressed per default) index list.
|}

==Regular Expressions notes==
Psarc uses regular expressions compatibles with PERL 5, most specifically the ones used by PCRE library http://www.pcre.org/ As can be seen in the license texts of the software used in PS3 in XMB/Settings/System Settings/About PlayStation®3 (PS3™)

==Related tools and examples==
*All the files and xml's from the examples in front page ready to practise and to use as layouts http://www.multiup.org/en/mirror/c5b18ca6d3b0c4a24ea3c753d6df7a76/psarctests.zip
*http://findandreplace.codeplex.com/
*http://fart-it.sourceforge.net/
*http://textmechanic.com/Remove-Duplicate-Lines.html