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#
# Gaspar Sinai Tokyo 1999-12-03
#
Binary Map Formats
Sn = n long 8 bit unsigned char string
U1 = 8 bit unsigned integer
U2 = 16 bit unsigned integer network orderccessing:
LOW = INPUT%256
HIGH = INPUT/256
returning 0 means no mappping. It also means
that 0 can not be mapped to or from.
so is if (LOW < LOW_MIN || LOW > LOW_MAX
|| HIGH < HIGH_MIN || HIGH > HIGH_MAX)
U4 = 32 bit unsigned integer network order
I4 = 32 bit signed integer network order
ARRAY16 = 16 bit unsigned integer network order compressed array
The size of the array:
(LOW_MAX - LOW_MIN + 1) * (HIGH_MAX = HIGH_MIN+1)
Where:
LOW_MIN = min (code[n]%256)
LOW_MAX = max (code[n]%256)
HIGH_MIN = min (code[n]/256)
HIGH_MAX = max (code[n]/256)
Accessing:
LOW = INPUT%256
HIGH = INPUT/256
returning 0 means no mappping. It also means
that 0 can not be mapped to or from.
so is if (LOW < LOW_MIN || LOW > LOW_MAX
|| HIGH < HIGH_MIN || HIGH > HIGH_MAX)
if there is mapping it can be
ARRAY[(HIGH - HIGH_MIN) * (LOW_MAX - LOW_MIN+1) + (LOW-LOW_MIN)]
1 to 1 bmap
===========
This umap allows 1 to 1 mapping and reverse mapping of unsigned shorts.
S16: "YUDIT-UMAP 1.0"
S32: "alias name"
U2: SOFFSET start of data offset from beginning of file
#
# FREE AREA till SOFFSET
#
# Bounds of Local Code Array that maps to Unicode
# Start of data SOFFSET
U2: decode HIGH_MIN
U2: decode HIGH_MAX
U2: decode LOW_MIN
U2: decode LOW_MAX
# Bounds of Unicode Array that maps to Local Code
U2: encode HIGH_MIN
U2: encode HIGH_MAX
U2: encode LOW_MIN
U2: encode LOW_MAX
ARRAY16: decode
ARRAY16: encode
<---end--->
n to n bmap
===========
This maps max 255 byte long string to a max 256 byte string.
S16: "YUDIT-NtoN 1.0"
S32: "alias name"
U4 COMMENT_SIZE
U1 COMMENT[COMMENT_SIZE]
U4: MAP_TYPE -
0. undefined
1. kmap
2. fontmap
3. clustered kmap
U4: MAP_SIZE - the number of maps in this coder
U4: OFFSET[0] - the offsets pointing to CODE_AREAs
... note that we have one more...
U4: OFFSET[MAP_SIZE] - the offsets pointing to END
#
# Start of CODE AREA. array rererences start here.
#
S32: "alias name"
U4 COMMENT_SIZE
U1 COMMENT[COMMENT_SIZE]
U1 DECODE - bit 0 is 0 if decode, 1 if encode (reverse = from unicode) map
U1 INPUT_BYTE_SIZE - This many bytes supposed to form an input word (hint)
U1 OUTPUT_BYTE_SIZE- This many bytes supposed to form an output word (hint)
U1 INPUT_BYTE_LENGTH - The size of the length indicator in data. 0,1,2 or 3
U1 OUTPUT_BYTE_LENGTH - The size of the length indicator in data 0,1,2 or 3
0=8bit, 1=16bit, 2=32bit, 3=64bit
U4 STATE_MACHINE - Index to state machine if zero there is no state machine.
State machine should come after code area.
U4 SPARE - UNUSED. 0.
U4 CODE_SIZE - The size of the struct map.
U4 CODE_MAP[0] - points to the first element starting from DATA_AREA
.. note that we have 1 more element in this array!!!
U4 CODE_MAP[CODE_SIZE] - points to the end of last element
#
# DATA_AREA array references start here.
#
unpadded struct {
Ui KEY_SIZE
Ui SUB_SIZE # The size of elements macthed.
U1 [KEY_SIZE] KEY
Uo RESULT_SIZE
U1 [RESULT_SIZE] RESULT
U1 COMMENT SIZE # A max 255 byte comment.
U1 [COMMENT_SIZE] COMMENT
} [CODE_SIZE]
#
# State Machine (optional)
# The integers point to next state inside this state machine.
# If -1, reject.
# Currently ther is no implementation for this yet.
# STATE_MACHINE this can be added here or collectively at the end of
# this file.
U4[32] size - state machine size in 64 byte words. (states)
U4[16] state0
U4[16] state1
[..]
* Each state contains a nibble. (FB -> F one state, B another state.)
* Each state is has an index of 30 bit integers pointing to next state
or the matched value.
* They can point to matched value. by having the
upper 2 bits value:
REJECT: 0 - points to nowhere
MORE: 1 - points to STATE_MACHINE
MATCH: 3 - points to CODE_MAP
* The match more is not used.
#
# FREE AREA till OFFSET[1]
#
|
