56 lines
2.8 KiB
Plaintext
56 lines
2.8 KiB
Plaintext
#
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# Name: XCCS (XC-3-1-1-0) to Unicode
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# Unicode version: 3.0
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# Table version: 0.1
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# Table format: Format A
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# Date: 28 July 2020
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# Author: Ron Kaplan <Ron.Kaplan@post.harvard.edu>
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#
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# This file contains mappings from the Xerox Character Code Standard (version
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# XC1-3-3-0, 1987) into Unicode 3.0. standard codes. That is the version of
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# XCCS corresponding to the fonts in the Medley system. The Xerox mappings
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# did not come from the Unicode CDROM, they were constructed by combining
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# and constrasting information from a binary file (xerox>XCCStoUni)
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# of unknown provenance with code mappings scraped from the Wikipedia page
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# https://en.wikipedia.org/wiki/Xerox_Character_Code_Standard
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# in July 2020. Both sources were errorful and incomplete, so the original
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# data was inspected and modified by hand. The data here may be the currently
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# best specification of these mapping, but the mappings may still contain
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# errors--no guarantees. Obviously, the reverse mappings from Unicode to
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# XCCS are by definition incomplete.
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#
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# The file XCCS-NOJIS.TXT excludes the large set of mappings for
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# Japanese characters, it just includes characters thatt are more broadly useful.
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#
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# The JIS mappings are contained in the separate XCCS-JIS.TXT file.
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# The full set of mappings can be creating by appending these two files.
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#
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# The format of this file conforms to the format of the other Unicode-supplied
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# mapping files:
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# Three white-space (tab or spaces) separated columns
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# Column #1 is the XCCS code (as hex 0xXXXX)
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# Column #2 is the corresponding Unicode (as hex 0xXXXX)
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# Column #3 (after #) is a comment column. For convenience, it contains the
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# Unicode character itself (since the Unicode character names
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# are not available)
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# Unicode FFFF is used for undefined XCCS codes
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# Unicode FFFE is used for XCCS codes that have not yet been filled in.
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#
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# Like the other Unicode mapping files, this file can be read by
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# common Unicode routines. Also, it is encoded in UTF8, so that the Unicode characters
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# are properly displayed on the right side and can be edited by standard
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# Unicode-enabled editors (e.g. Mac Textedit).
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#
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# This file and the other Unicode mapping files can also be read by the function
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# READ-UNICODE-MAPPING in the UNICODE Medley library package.
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#
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# The entries are in XCCS order and grouped by character sets. In front of
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# each character set, for convenience, there is a line with the octal XCCS
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# character set, after #.
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#
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# Note that a given XCCS code might map to codes in several different Unicode
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# positions, since there are repetitions in the Unicode standard.
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#
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# Any comments or problems, contact <ron.kaplan@post.harvard.edu>
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