xref: /freebsd/contrib/file/magic/Magdir/smile (revision 313376588638950ba1e93c403dd8c97bc52fd3a2)
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2#------------------------------------------------------------------------------
3# $File: smile,v 1.1 2011/08/17 17:37:18 christos Exp $
4# smile:  file(1) magic for Smile serialization
5#
6# The Smile serialization format uses a 4-byte header:
7#
8#   Constant byte #0: 0x3A (ASCII ':')
9#   Constant byte #1: 0x29 (ASCII ')')
10#   Constant byte #2: 0x0A (ASCII linefeed, '\n')
11#   Variable byte #3, consisting of bits:
12#     Bits 4-7 (4 MSB): 4-bit version number
13#     Bits 3: Reserved
14#     Bit 2 (mask 0x04): Whether raw binary (unescaped 8-bit) values may be present in content
15#     Bit 1 (mask 0x02): Whether shared String value checking was enabled during encoding, default false
16#     Bit 0 (mask 0x01): Whether shared property name checking was enabled during encoding, default true
17#
18# Reference: http://wiki.fasterxml.com/SmileFormatSpec
19# Created by: Pierre-Alexandre Meyer <pierre@mouraf.org>
20
21# Detection
220	string		:)\n	Smile binary data
23
24# Versioning
25>3	byte&0xF0	x		version %d:
26
27# Properties
28>3	byte&0x04	0x04		binary raw,
29>3	byte&0x04	0x00		binary encoded,
30>3	byte&0x02	0x02		shared String values enabled,
31>3	byte&0x02	0x00		shared String values disabled,
32>3	byte&0x01	0x01		shared field names enabled
33>3	byte&0x01	0x00		shared field names disabled
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