xref: /freebsd/share/i18n/csmapper/APPLE/UCS%GURMUKHI.src (revision d0b2dbfa0ecf2bbc9709efc5e20baf8e4b44bbbf)

TYPE		ROWCOL
NAME		UCS/GURMUKHI
SRC_ZONE	0x0000-0x2212
OOB_MODE	INVALID
DST_INVALID	0x100
DST_UNIT_BITS	16
#=======================================================================
#   File name:  GURMUKHI.TXT
#
#   Contents:   Map (external version) from Mac OS Gurmukhi
#               encoding to Unicode 2.1 and later.
#
#   Copyright:  (c) 1997-2002, 2005 by Apple Computer, Inc., all rights
#               reserved.
#
#   Contact:    charsets@apple.com
#
#   Changes:
#
#       c02  2005-Apr-05    Update header comments. Matches internal xml
#                           <c1.1> and Text Encoding Converter 2.0.
#      b3,c1 2002-Dec-19    Change mappings for 0x91, 0xD5 based on
#							new decomposition rules. Update URLs,
#                           notes. Matches internal utom<b2>.
#       b02  1999-Sep-22    Update contact e-mail address. Matches
#                           internal utom<b1>, ufrm<b1>, and Text
#                           Encoding Converter version 1.5.
#       n02  1998-Feb-05    First version; matches internal utom<n5>,
#                           ufrm<n6>.
#
# Standard header:
# ----------------
#
#   Apple, the Apple logo, and Macintosh are trademarks of Apple
#   Computer, Inc., registered in the United States and other countries.
#   Unicode is a trademark of Unicode Inc. For the sake of brevity,
#   throughout this document, "Macintosh" can be used to refer to
#   Macintosh computers and "Unicode" can be used to refer to the
#   Unicode standard.
#
#   Apple Computer, Inc. ("Apple") makes no warranty or representation,
#   either express or implied, with respect to this document and the
#   included data, its quality, accuracy, or fitness for a particular
#   purpose. In no event will Apple be liable for direct, indirect,
#   special, incidental, or consequential damages resulting from any
#   defect or inaccuracy in this document or the included data.
#
#   These mapping tables and character lists are subject to change.
#   The latest tables should be available from the following:
#
#   <http://www.unicode.org/Public/MAPPINGS/VENDORS/APPLE/>
#
#   For general information about Mac OS encodings and these mapping
#   tables, see the file "README.TXT".
#
# Format:
# -------
#
#   Three tab-separated columns;
#   '#' begins a comment which continues to the end of the line.
#     Column #1 is the Mac OS Gurmukhi code or code sequence
#       (in hex as 0xNN or 0xNN+0xNN)
#     Column #2 is the corresponding Unicode or Unicode sequence
#       (in hex as 0xNNNN or 0xNNNN+0xNNNN).
#     Column #3 is a comment containing the Unicode name or sequence
#       of names. In some cases an additional comment follows the
#       Unicode name(s).
#
#   The entries are in two sections. The first section is for pairs of
#   Mac OS Gurmukhi code points that must be mapped in a special way.
#   The second section maps individual code points.
#
#   Within each section, the entries are in Mac OS Gurmukhi code order.
#
#   Control character mappings are not shown in this table, following
#   the conventions of the standard UTC mapping tables. However, the
#   Mac OS Gurmukhi character set uses the standard control characters
#   at 0x00-0x1F and 0x7F.
#
# Notes on Mac OS Gurmukhi:
# -------------------------
#
#   This is a legacy Mac OS encoding; in the Mac OS X Carbon and Cocoa
#   environments, it is only supported via transcoding to and from
#   Unicode.
#
#   Mac OS Gurmukhi is based on IS 13194:1991 (ISCII-91), with the
#   addition of several punctuation and symbol characters. However,
#   Mac OS Gurmukhi does not support the ATR (attribute) mechanism of
#   ISCII-91.
#
# 1. ISCII-91 features in Mac OS Gurmukhi include:
#
#  a) Explicit halant and soft halant
#
#     A double halant (0xE8 + 0xE8) constitutes an "explicit halant",
#     which will always appear as a halant instead of causing formation
#     of a ligature or half-form consonant.
#
#     Halant followed by nukta (0xE8 + 0xE9) constitutes a "soft
#     halant", which prevents formation of a ligature and instead
#     retains the half-form of the first consonant.
#
#  b) Invisible consonant
#
#     The byte 0xD9 (called INV in ISCII-91) is an invisible consonant:
#     It behaves like a consonant but has no visible appearance. It is
#     intended to be used (often in combination with halant) to display
#     dependent forms in isolation, such as the RA forms or consonant
#     half-forms.
#
#  c) Extensions for Vedic, etc.
#
#     The byte 0xF0 (called EXT in ISCII-91) followed by any byte in
#     the range 0xA1-0xEE constitutes a two-byte code point which can
#     be used to represent additional characters for Vedic (or other
#     extensions); 0xF0 followed by any other byte value constitutes
#     malformed text. Mac OS Gurmukhi supports this mechanism, but
#     does not currently map any of these two-byte code points to
#     anything.
#
# 2. Mac OS Gurmukhi additions
#
#   Mac OS Gurmukhi adds characters using the code points
#   0x80-0x8A and 0x90-0x94 (the latter are some Gurmukhi additions).
#
# 3. Unused code points
#
#   The following code points are currently unused, and are not shown
#   here: 0x8B-0x8F, 0x95-0xA1, 0xA3, 0xAA-0xAB, 0xAE-0xAF, 0xB2,
#   0xC7, 0xCE, 0xD0, 0xD2-0xD3, 0xD6, 0xDF-0xE0, 0xE3-0xE4, 0xE7,
#   0xEB-0xEF, 0xFB-0xFF. In addition, 0xF0 is not shown here, but it
#   has a special function as described above.
#
# Unicode mapping issues and notes:
# ---------------------------------
#
# 1. Mapping the byte pairs
#
#   If the byte value 0xE8 is encountered when mapping Mac OS
#   Gurmukhi text, then the next byte (if there is one) should be
#   examined. If the next byte is 0xE8 or 0xE9, then the byte pair
#   should be mapped using the first section of the mapping table
#   below. Otherwise, each byte should be mapped using the second
#   section of the mapping table below.
#
#   - The Unicode Standard, Version 2.0, specifies how explicit
#     halant and soft halant should be represented in Unicode;
#     these mappings are used below.
#
#   If the byte value 0xF0 is encountered when mapping Mac OS
#   Gurmukhi text, then the next byte should be examined. If there
#   is no next byte (e.g. 0xF0 at end of buffer), the mapping
#   process should indicate incomplete character. If there is a next
#   byte but it is not in the range 0xA1-0xEE, the mapping process
#   should indicate malformed text. Otherwise, the mapping process
#   should treat the byte pair as a valid two-byte code point with no
#   mapping (e.g. map it to QUESTION MARK, REPLACEMENT CHARACTER,
#   etc.).
#
# 2. Mapping the invisible consonant
#
#   It has been suggested that INV in ISCII-91 should map to ZERO
#   WIDTH NON-JOINER in Unicode. However, this causes problems with
#   roundtrip fidelity: The ISCII-91 sequences 0xE8+0xE8 and 0xE8+0xD9
#   would map to the same sequence of Unicode characters. We have
#   instead mapped INV to LEFT-TO-RIGHT MARK, which avoids these
#   problems.
#
# 3. Mappings using corporate characters
#
#   Mapping the GURMUKHI LETTER SHA 0xD5 presents an interesting
#   problem. At first glance, we could map it to the single Unicode
#   character 0x0A36.
#
#   However, our goal is that the mappings provided here should also
#   be able to generate the mappings to maximally decomposed Unicode
#   by simple recursive substitution of the canonical decompositions
#   in the Unicode database. We want mapping tables derived this way
#   to retain full roundtrip fidelity.
#
#   Since the canonical decomposition of 0x0A36 is 0x0A38+0x0A3C,
#   the decomposition mapping for 0xD5 would be identical with the
#   decomposition mapping for 0xD7+0xE9, and roundtrip fidelity would
#   be lost.
#
#   We solve this problem by using a grouping hint (one of the set of
#   transcoding hints defined by Apple).
#
#   Apple has defined a block of 32 corporate characters as "transcoding
#   hints." These are used in combination with standard Unicode characters
#   to force them to be treated in a special way for mapping to other
#   encodings; they have no other effect. Sixteen of these transcoding
#   hints are "grouping hints" - they indicate that the next 2-4 Unicode
#   characters should be treated as a single entity for transcoding. The
#   other sixteen transcoding hints are "variant tags" - they are like
#   combining characters, and can follow a standard Unicode (or a sequence
#   consisting of a base character and other combining characters) to
#   cause it to be treated in a special way for transcoding. These always
#   terminate a combining-character sequence.
#
#   The transcoding coding hint used in this mapping table is:
#     0xF860 group next 2 characters
#
#   Then we can map 0x91 as follows:
#     0xD5 -> 0xF860+0x0A38+0x0A3C
#
#   We could also have used a variant tag such as 0xF87F and mapped it
#   this way:
#     0xD5 -> 0x0A36+0xF87F
#
# 4. Additional loose mappings from Unicode
#
#   These are not preserved in roundtrip mappings.
#
#   0A59 -> 0xB4+0xE9   # GURMUKHI LETTER KHHA
#   0A5A -> 0xB5+0xE9   # GURMUKHI LETTER GHHA
#   0A5B -> 0xBA+0xE9   # GURMUKHI LETTER ZA
#   0A5E -> 0xC9+0xE9   # GURMUKHI LETTER FA
#
#   0A70 -> 0xA2    # GURMUKHI TIPPI
#
#   Loose mappings from Unicode should also map U+0A71 (GURMUKHI ADDAK)
#   followed by any Gurmukhi consonant to the equivalent ISCII-91
#   consonant plus halant plus the consonant again. For example:
#
#   0A71+0A15 -> 0xB3+0xE8+0xB3
#   0A71+0A16 -> 0xB4+0xE8+0xB4
#   ...
#
# Details of mapping changes in each version:
# -------------------------------------------
#
#   Changes from version b02 to version b03/c01:
#
#   - Change mapping of 0x91 from 0xF860+0x0A21+0x0A3C to 0x0A5C GURMUKHI
#     LETTER RRA, now that the canonical decomposition of 0x0A5C to
#     0x0A21+0x0A3C has been deleted
#
#   - Change mapping of 0xD5 from 0x0A36 GURMUKHI LETTER SHA to
#     0xF860+0x0A38+0x0A3C, now that a canonical decomposition of 0x0A36
#     to 0x0A38+0x0A3C has been added.
#
##################
BEGIN_MAP
0x0000 - 0x007F = 0x00 -
0x00A9 = 0x88
0x00AE = 0x89
0x00D7 = 0x80
0x0964 = 0xEA
0x0A02 = 0xA2
0x0A05 = 0xA4
0x0A06 = 0xA5
0x0A07 = 0xA6
0x0A08 = 0xA7
0x0A09 = 0xA8
0x0A0A = 0xA9
0x0A0F = 0xAC
0x0A10 = 0xAD
0x0A13 = 0xB0
0x0A14 = 0xB1
0x0A15 = 0xB3
0x0A16 = 0xB4
0x0A17 = 0xB5
0x0A18 = 0xB6
0x0A19 = 0xB7
0x0A1A = 0xB8
0x0A1B = 0xB9
0x0A1C = 0xBA
0x0A1D = 0xBB
0x0A1E = 0xBC
0x0A1F = 0xBD
0x0A20 = 0xBE
0x0A21 = 0xBF
0x0A22 = 0xC0
0x0A23 = 0xC1
0x0A24 = 0xC2
0x0A25 = 0xC3
0x0A26 = 0xC4
0x0A27 = 0xC5
0x0A28 = 0xC6
0x0A2A = 0xC8
0x0A2B = 0xC9
0x0A2C = 0xCA
0x0A2D = 0xCB
0x0A2E = 0xCC
0x0A2F = 0xCD
0x0A30 = 0xCF
0x0A32 = 0xD1
0x0A35 = 0xD4
0x0A38 = 0xD7
0x0A39 = 0xD8
0x0A3C = 0xE9
0x0A3E = 0xDA
0x0A3F = 0xDB
0x0A40 = 0xDC
0x0A41 = 0xDD
0x0A42 = 0xDE
0x0A47 = 0xE1
0x0A48 = 0xE2
0x0A4B = 0xE5
0x0A4C = 0xE6
0x0A4D = 0xE8
#0x0A4D+0x200C = 0xE8+0xE8
#0x0A4D+0x200D = 0xE8+0xE9
0x0A5C = 0x91
0x0A66 = 0xF1
0x0A67 = 0xF2
0x0A68 = 0xF3
0x0A69 = 0xF4
0x0A6A = 0xF5
0x0A6B = 0xF6
0x0A6C = 0xF7
0x0A6D = 0xF8
0x0A6E = 0xF9
0x0A6F = 0xFA
0x0A71 = 0x90
0x0A72 = 0x93
0x0A73 = 0x92
0x0A74 = 0x94
0x200E = 0xD9
0x2013 = 0x82
0x2014 = 0x83
0x2018 = 0x84
0x2019 = 0x85
0x2022 = 0x87
0x2026 = 0x86
0x2122 = 0x8A
0x2212 = 0x81
#0xF860+0x0A38+0x0A3C = 0xD5
END_MAP