How to map /dev/vcsa charactel values to unicode code points

How to map /dev/vcsa charactel values to unicode code points

[Ari Moisio]

Hi

Sorry for cross-posting.

I'm looking or way to map  numerical presentation used in the /dev/vcsa to 
present  each character (8 or 9 bit integer) to  respective unicode code 
points. With  US ASCII this is quite straighforward but with with accented 
letters and  graphics make a mess.

I have tried to read this table  with GIO_UNISCRNMAP and GIO_UNIMAP ioctls 
but i got only most of the characters converted right, not all of them.

Any tips wellcome.



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Re: How to map /dev/vcsa charactel values to unicode code points

[Kitty Litter]

There are charts you should be able to find giving codepoints and the 
character they represent. If you know C I can give you code to demonstrate 
how to get the codepoint from a 2 3 or 4 byte utf-8 sequence. Basically when 
you see an extended ascii character you determine how many leading 1 bits 
there are. If there are 3 for example then sequence should be a 3-byte utf8. 
You then check the second and third byte to see that B15 is 1 and B14 is 
zero. Then you concatenate the bits and come up with the codepoint. Quite 
complicated!