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First draft of Unicode support in pterm. It's pretty complete: it

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does UTF-8 copy and paste (falling back to normal strings if
necessary), it understands X font encodings and translates things
accordingly so that if you have a Unicode font you can ask for
virtually any single-byte encoding and get it (Mac-Roman pterm,
anyone?), and so on. There's work left to be done (wide fonts for
CJK spring to mind), but I reckon this is a pretty good start.

[originally from svn r2395]
This commit is contained in:
Simon Tatham
2002-12-31 12:20:34 +00:00
parent 241570c04f
commit ad2bbc52a4
20 changed files with 2836 additions and 50 deletions
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45
charset/sbcs.c Normal file
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/*
* sbcs.c - routines to handle single-byte character sets.
*/
#include "charset.h"
#include "internal.h"
/*
* The charset_spec for any single-byte character set should
* provide read_sbcs() as its read function, and its `data' field
* should be a wchar_t string constant containing the 256 entries
* of the translation table.
*/
void read_sbcs(charset_spec const *charset, long int input_chr,
charset_state *state,
void (*emit)(void *ctx, long int output), void *emitctx)
{
wchar_t const *table = (wchar_t const *)charset->data;
UNUSEDARG(state);
emit(emitctx, table[input_chr]);
}
void write_sbcs(charset_spec const *charset, long int input_chr,
charset_state *state,
void (*emit)(void *ctx, long int output), void *emitctx)
{
wchar_t const *table = (wchar_t const *)charset->data;
int i;
UNUSEDARG(state);
/*
* FIXME: this should work, but it's ludicrously inefficient.
* We should be using the ucs2sbcs table.
*/
for (i = 0; i < 256; i++)
if (table[i] == input_chr) {
emit(emitctx, i);
return;
}
emit(emitctx, ERROR);
}