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 # 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. # b02 1999-Sep-22 Update contact e-mail address. Matches # internal utom, ufrm, and Text # Encoding Converter version 1.5. # n02 1998-Feb-05 First version; matches internal utom, # ufrm. # # 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: # # # # 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