mapscrn
load screen output mapping table
SYNOPSIS
mapscrn [-V] [-v] [-o map.orig] mapfile
DESCRIPTION
The mapscrn command is obsolete - its function is now built-in into setfont. However, for backwards compatibility it is still available as a separate command.
The mapscrn command loads a user defined output character mapping table into the console driver. The console driver may be later put into use user-defined mapping table mode by outputting a special escape sequence to the console device. This sequence is <esc>(K for the G0 character set and <esc>)K for the G1 character set. When the -o option is given, the old map is saved in map.orig.
USE
There are two kinds of mapping tables: direct-to-font tables, that give a font position for each user byte value, and user-to-unicode tables that give a unicode value for each user byte. The corresponding glyph is now found using the unicode index of the font. The command
mapscrn trivial
sets up a one-to-one direct-to-font table where user bytes directly address the font. This is useful for fonts that are in the same order as the character set one uses. A command like
mapscrn 8859-2
sets up a user-to-unicode table that assumes that the user uses ISO 8859-2.
INPUT FORMAT
The mapscrn command can read the map in either of two
formats:
1. 256 or 512 bytes binary data
2. two-column text file
Format (1) is a direct image of the translation table. The 256-bytes
tables are direct-to-font, the 512-bytes tables are user-to-unicode
tables. Format (2) is used to fill the table as follows: cell
with offset mentioned in the first column is filled with the value
mentioned in the second column. When values larger than 255 occur, or
values are written using the U+xxxx notation, the table is assumed to be
a user-to-unicode table, otherwise it is a direct-to-font table.
Values in the file may be specified in one of several
formats:
1. Decimal: String of decimal digits not starting with
'0'
2. Octal: String of octal digits beginning with
'0'.
3. Hexadecimal: String of hexadecimal digits preceded
by "0x".
4. Unicode: String of four hexadecimal digits preceded
by "U+".
5. Character: Single character enclosed in single
quotes. (And the binary value is used.) Note that blank, comma, tab
character and '#' cannot be specified with this format.
6. UTF-8 Character: Single (possibly multi-byte) UTF-8
character, enclosed in single quotes.
Note that control characters (with codes < 32) cannot be re-mapped with mapscrn because they have special meaning for the driver.
OTHER OPTIONS
- -V
-
Prints version number and exits.
- -v
-
Be verbose.
FILES
- /usr/share/kbd/consoletrans
-
The default directory for screen mappings.
SEE ALSO
setfont(8)
AUTHOR
Copyright (C) 1993 Eugene G. Crosser
<crosser@pccross.msk.su>
This software and documentation may be distributed freely.