359 lines
12 KiB
Plaintext
359 lines
12 KiB
Plaintext
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TYPE ROWCOL
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NAME UCS/DEVANAGA
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SRC_ZONE 0x0000-0x2212
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OOB_MODE INVALID
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DST_INVALID 0x100
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DST_UNIT_BITS 16
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#=======================================================================
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# File name: DEVANAGA.TXT
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#
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# Contents: Map (external version) from Mac OS Devanagari
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# encoding to Unicode 2.1 and later.
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#
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# Copyright: (c) 1995-2002, 2005 by Apple Computer, Inc., all rights
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# reserved.
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#
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# Contact: charsets@apple.com
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#
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# Changes:
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#
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# c02 2005-Apr-05 Update header comments; add section on
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# roundtrip considerations. Matches internal
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# xml <c1.1> and Text Encoding Converter 2.0.
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# b3,c1 2002-Dec-19 Update URLs. Matches internal utom<b1>.
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# b02 1999-Sep-22 Update contact e-mail address. Matches
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# internal utom<b1>, ufrm<b1>, and Text
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# Encoding Converter version 1.5.
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# n04 1998-Feb-05 First version; matches internal utom<n9>,
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# ufrm<n15>.
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#
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# Standard header:
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# ----------------
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#
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# Apple, the Apple logo, and Macintosh are trademarks of Apple
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# Computer, Inc., registered in the United States and other countries.
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# Unicode is a trademark of Unicode Inc. For the sake of brevity,
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# throughout this document, "Macintosh" can be used to refer to
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# Macintosh computers and "Unicode" can be used to refer to the
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# Unicode standard.
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#
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# Apple Computer, Inc. ("Apple") makes no warranty or representation,
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# either express or implied, with respect to this document and the
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# included data, its quality, accuracy, or fitness for a particular
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# purpose. In no event will Apple be liable for direct, indirect,
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# special, incidental, or consequential damages resulting from any
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# defect or inaccuracy in this document or the included data.
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#
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# These mapping tables and character lists are subject to change.
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# The latest tables should be available from the following:
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#
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# <http://www.unicode.org/Public/MAPPINGS/VENDORS/APPLE/>
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#
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# For general information about Mac OS encodings and these mapping
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# tables, see the file "README.TXT".
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#
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# Format:
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# -------
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#
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# Three tab-separated columns;
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# '#' begins a comment which continues to the end of the line.
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# Column #1 is the Mac OS Devanagari code or code sequence
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# (in hex as 0xNN or 0xNN+0xNN)
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# Column #2 is the corresponding Unicode or Unicode sequence
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# (in hex as 0xNNNN or 0xNNNN+0xNNNN).
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# Column #3 is a comment containing the Unicode name or sequence
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# of names. In some cases an additional comment follows the
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# Unicode name(s).
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#
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# The entries are in two sections. The first section is for pairs of
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# Mac OS Devanagari code points that must be mapped in a special way.
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# The second section maps individual code points.
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#
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# Within each section, the entries are in Mac OS Devanagari code order.
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#
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# Control character mappings are not shown in this table, following
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# the conventions of the standard UTC mapping tables. However, the
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# Mac OS Devanagari character set uses the standard control characters
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# at 0x00-0x1F and 0x7F.
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#
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# Notes on Mac OS Devanagari:
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# ---------------------------
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#
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# This is a legacy Mac OS encoding; in the Mac OS X Carbon and Cocoa
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# environments, it is only supported via transcoding to and from
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# Unicode.
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#
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# Mac OS Devanagari is based on IS 13194:1991 (ISCII-91), with the
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# addition of several punctuation and symbol characters. However,
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# Mac OS Devanagari does not support the ATR (attribute) mechanism of
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# ISCII-91.
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#
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# 1. ISCII-91 features in Mac OS Devanagari include:
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#
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# a) Overloading of nukta
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#
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# In addition to using the nukta (0xE9) like a combining dot below,
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# nukta is overloaded to function as a general character modifier.
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# In this role, certain code points followed by 0xE9 are treated as
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# a two-byte code point representing a character which may be
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# rather different than the characters represented by either of
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# the code points alone. For example, the character DEVANAGARI OM
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# (U+0950) is represented in ISCII-91 as candrabindu + nukta.
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#
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# b) Explicit halant and soft halant
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#
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# A double halant (0xE8 + 0xE8) constitutes an "explicit halant",
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# which will always appear as a halant instead of causing formation
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# of a ligature or half-form consonant.
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#
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# Halant followed by nukta (0xE8 + 0xE9) constitutes a "soft
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# halant", which prevents formation of a ligature and instead
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# retains the half-form of the first consonant.
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#
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# c) Invisible consonant
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#
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# The byte 0xD9 (called INV in ISCII-91) is an invisible consonant:
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# It behaves like a consonant but has no visible appearance. It is
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# intended to be used (often in combination with halant) to display
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# dependent forms in isolation, such as the RA forms or consonant
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# half-forms.
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#
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# d) Extensions for Vedic, etc.
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#
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# The byte 0xF0 (called EXT in ISCII-91) followed by any byte in
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# the range 0xA1-0xEE constitutes a two-byte code point which can
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# be used to represent additional characters for Vedic (or other
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# extensions); 0xF0 followed by any other byte value constitutes
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# malformed text. Mac OS Devanagari supports this mechanism, but
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# does not currently map any of these two-byte code points to
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# anything.
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#
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# 2. Mac OS Devanagari additions
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#
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# Mac OS Devanagari adds characters using the code points
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# 0x80-0x8A and 0x90-0x91 (the latter are some Devanagari additions
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# from Unicode).
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#
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# 3. Unused code points
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#
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# The following code points are currently unused, and are not shown
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# here: 0x8B-0x8F, 0x92-0xA0, 0xEB-0xEF, 0xFB-0xFF. In addition,
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# 0xF0 is not shown here, but it has a special function as described
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# above.
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#
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# Unicode mapping issues and notes:
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# ---------------------------------
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#
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# 1. Mapping the byte pairs
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#
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# If one of the following byte values is encountered when mapping
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# Mac OS Devanagari text - 0xA1, 0xA6, 0xA7, 0xAA, 0xDB, 0xDC, 0xDF,
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# 0xE8, or 0xEA - then the next byte (if there is one) should be
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# examined. If the next byte is 0xE9 - or also 0xE8, if the first
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# byte was 0xE8 - then the byte pair should be mapped using the
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# first section of the mapping table below. Otherwise, each byte
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# should be mapped using the second section of the mapping table
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# below.
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#
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# - The Unicode Standard, Version 2.0, specifies how explicit
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# halant and soft halant should be represented in Unicode;
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# these mappings are used below.
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#
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# If the byte value 0xF0 is encountered when mapping Mac OS
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# Devanagari text, then the next byte should be examined. If there
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# is no next byte (e.g. 0xF0 at end of buffer), the mapping
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# process should indicate incomplete character. If there is a next
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# byte but it is not in the range 0xA1-0xEE, the mapping process
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# should indicate malformed text. Otherwise, the mapping process
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# should treat the byte pair as a valid two-byte code point with no
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# mapping (e.g. map it to QUESTION MARK, REPLACEMENT CHARACTER,
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# etc.).
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#
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# 2. Mapping the invisible consonant
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#
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# It has been suggested that INV in ISCII-91 should map to ZERO
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# WIDTH NON-JOINER in Unicode. However, this causes problems with
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# roundtrip fidelity: The ISCII-91 sequences 0xE8+0xE8 and 0xE8+0xD9
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# would map to the same sequence of Unicode characters. We have
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# instead mapped INV to LEFT-TO-RIGHT MARK, which avoids these
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# problems.
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#
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# 3. Additional loose mappings from Unicode
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#
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# These are not preserved in roundtrip mappings.
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#
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# U+0958 0xB3+0xE9 # DEVANAGARI LETTER QA
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# U+0959 0xB4+0xE9 # DEVANAGARI LETTER KHHA
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# U+095A 0xB5+0xE9 # DEVANAGARI LETTER GHHA
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# U+095B 0xBA+0xE9 # DEVANAGARI LETTER ZA
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# U+095C 0xBF+0xE9 # DEVANAGARI LETTER DDDHA
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# U+095D 0xC0+0xE9 # DEVANAGARI LETTER RHA
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# U+095E 0xC9+0xE9 # DEVANAGARI LETTER FA
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#
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# 4. Roundtrip considerations when mapping to decomposed Unicode
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#
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# Both ISCII-91 (hence Mac OS Devanagari) and Unicode provide multiple
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# ways of representing certain Devanagari consonants. For example,
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# DEVANAGARI LETTER NNNA can be represented in Unicode as the single
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# character 0x0929 or as the sequence 0x0928 0x093C; similarly, this
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# consonant can be represented in Mac OS Devanagari as 0xC7 or as the
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# sequence 0xC6 0xE9. This leads to some roundtrip problems. First
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# note that we have the following mappings without such problems:
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#
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# ISCII/ standard decomposition of reverse mapping
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# Mac OS Unicode mapping standard mapping of decomposition
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# ------ ----------------------- ---------------- ----------------
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# 0xC6 0x0928 ... LETTER NA 0x0928 (same) 0xC6
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# 0xCD 0x092F ... LETTER YA 0x092F (same) 0xCD
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# 0xCF 0x0930 ... LETTER RA 0x0930 (same) 0xCF
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# 0xD2 0x0933 ... LETTER LLA 0x0933 (same) 0xD2
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# 0xE9 0x093C ... SIGN NUKTA 0x093C (same) 0xE9
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#
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# However, those mappings above cause roundtrip problems for the
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# the following mappings if they are decomposed:
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#
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# ISCII/ standard decomposition of reverse mapping
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# Mac OS Unicode mapping standard mapping of decomposition
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# ------ ----------------------- ---------------- ----------------
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# 0xC7 0x0929 ... LETTER NNNA 0x0928 0x093C 0xC6 0xE9
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# 0xCE 0x095F ... LETTER YYA 0x092F 0x093C 0xCD 0xE9
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# 0xD0 0x0931 ... LETTER RRA 0x0930 0x093C 0xCF 0xE9
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# 0xD3 0x0934 ... LETTER LLLA 0x0933 0x093C 0xD2 0xE9
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#
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# One solution is to use a grouping transcoding hint with the four
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# decompositions above to mark the decomposed sequence for special
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# treatment in transcoding. This yields the following mappings to
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# decomposed Unicode:
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#
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# ISCII/ decomposed
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# Mac OS Unicode mapping
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# ------ ----------------
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# 0xC7 0xF860 0x0928 0x093C
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# 0xCE 0xF860 0x092F 0x093C
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# 0xD0 0xF860 0x0930 0x093C
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# 0xD3 0xF860 0x0933 0x093C
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#
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# Details of mapping changes in each version:
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# -------------------------------------------
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#
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##################
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# Section 1: Map the following byte pairs as indicated:
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# (ZWNJ means ZERO WIDTH NON-JOINER, ZWJ means ZERO WIDTH JOINER)
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# (Also see note about 0xF0 in comments above)
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# Section 2: Map the remaining bytes as follows:
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#
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#
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#
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#
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BEGIN_MAP
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0x0000 - 0x007F = 0x00 -
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0x00A9 = 0x88
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0x00AE = 0x89
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0x00D7 = 0x80
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0x0901 = 0xA1
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0x0902 = 0xA2
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0x0903 = 0xA3
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0x0905 = 0xA4
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0x0906 = 0xA5
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0x0907 = 0xA6
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0x0908 = 0xA7
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0x0909 = 0xA8
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0x090A = 0xA9
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0x090B = 0xAA
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#0x090C = 0xA6+0xE9
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0x090D = 0xAE
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0x090E = 0xAB
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0x090F = 0xAC
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0x0910 = 0xAD
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0x0911 = 0xB2
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0x0912 = 0xAF
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0x0913 = 0xB0
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0x0914 = 0xB1
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0x0915 = 0xB3
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0x0916 = 0xB4
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0x0917 = 0xB5
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0x0918 = 0xB6
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0x0919 = 0xB7
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0x091A = 0xB8
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0x091B = 0xB9
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0x091C = 0xBA
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0x091D = 0xBB
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0x091E = 0xBC
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0x091F = 0xBD
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0x0920 = 0xBE
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0x0921 = 0xBF
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0x0922 = 0xC0
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0x0923 = 0xC1
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0x0924 = 0xC2
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0x0925 = 0xC3
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0x0926 = 0xC4
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0x0927 = 0xC5
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0x0928 = 0xC6
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0x0929 = 0xC7
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0x092A = 0xC8
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0x092B = 0xC9
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0x092C = 0xCA
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0x092D = 0xCB
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0x092E = 0xCC
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0x092F = 0xCD
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0x0930 = 0xCF
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0x0931 = 0xD0
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0x0932 = 0xD1
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0x0933 = 0xD2
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0x0934 = 0xD3
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0x0935 = 0xD4
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0x0936 = 0xD5
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0x0937 = 0xD6
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0x0938 = 0xD7
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0x0939 = 0xD8
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0x093C = 0xE9
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#0x093D = 0xEA+0xE9
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0x093E = 0xDA
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0x093F = 0xDB
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0x0940 = 0xDC
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0x0941 = 0xDD
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0x0942 = 0xDE
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0x0943 = 0xDF
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#0x0944 = 0xDF+0xE9
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0x0945 = 0xE3
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0x0946 = 0xE0
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0x0947 = 0xE1
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0x0948 = 0xE2
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0x0949 = 0xE7
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0x094A = 0xE4
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0x094B = 0xE5
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0x094C = 0xE6
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0x094D = 0xE8
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#0x094D+0x200C = 0xE8+0xE8
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#0x094D+0x200D = 0xE8+0xE9
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#0x0950 = 0xA1+0xE9
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0x095F = 0xCE
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#0x0960 = 0xAA+0xE9
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#0x0961 = 0xA7+0xE9
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#0x0962 = 0xDB+0xE9
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#0x0963 = 0xDC+0xE9
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0x0964 = 0xEA
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0x0965 = 0x90
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0x0966 = 0xF1
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0x0967 = 0xF2
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0x0968 = 0xF3
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0x0969 = 0xF4
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0x096A = 0xF5
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0x096B = 0xF6
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0x096C = 0xF7
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0x096D = 0xF8
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0x096E = 0xF9
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0x096F = 0xFA
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0x0970 = 0x91
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0x200E = 0xD9
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0x2013 = 0x82
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0x2014 = 0x83
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0x2018 = 0x84
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0x2019 = 0x85
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0x2022 = 0x87
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0x2026 = 0x86
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0x2122 = 0x8A
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0x2212 = 0x81
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END_MAP
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