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Initial UTF-8 support.

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This commit is contained in:
Nicholas Marriott
2008-09-09 22:16:37 +00:00
parent 1e145a639b
commit 19a2c87f04
16 changed files with 429 additions and 29 deletions
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51
input.c
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@ -1,4 +1,4 @@
/* $Id: input.c,v 1.57 2008-09-09 17:35:04 nicm Exp $ */
/* $Id: input.c,v 1.58 2008-09-09 22:16:36 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -56,6 +56,7 @@ void input_state_sequence_next(u_char, struct input_ctx *);
void input_state_sequence_intermediate(u_char, struct input_ctx *);
void input_state_string_next(u_char, struct input_ctx *);
void input_state_string_escape(u_char, struct input_ctx *);
void input_state_utf8(u_char, struct input_ctx *);
void input_handle_character(u_char, struct input_ctx *);
void input_handle_c0_control(u_char, struct input_ctx *);
@ -247,6 +248,7 @@ input_state_first(u_char ch, struct input_ctx *ictx)
return;
}
#if 0
if (INPUT_C1CONTROL(ch)) {
ch -= 0x40;
if (ch == '[')
@ -257,6 +259,10 @@ input_state_first(u_char ch, struct input_ctx *ictx)
input_handle_c1_control(ch, ictx);
return;
}
#endif
if (INPUT_DELETE(ch))
return;
input_handle_character(ch, ictx);
}
@ -481,11 +487,54 @@ input_state_string_escape(u_char ch, struct input_ctx *ictx)
input_state_string_next(ch, ictx);
}
void
input_state_utf8(u_char ch, struct input_ctx *ictx)
{
log_debug2("-- un %zu: %hhu (%c)", ictx->off, ch, ch);
ictx->utf8_buf.data[ictx->utf8_off++] = ch;
if (--ictx->utf8_len != 0)
return;
input_state(ictx, input_state_first);
screen_write_put_utf8(&ictx->ctx, &ictx->utf8_buf);
}
void
input_handle_character(u_char ch, struct input_ctx *ictx)
{
log_debug2("-- ch %zu: %hhu (%c)", ictx->off, ch, ch);
if (ch > 0x7f) {
/*
* UTF8 sequence.
*
* 11000010-11011111 C2-DF start of 2-byte sequence
* 11100000-11101111 E0-EF start of 3-byte sequence
* 11110000-11110100 F0-F4 start of 4-byte sequence
*/
memset(&ictx->utf8_buf.data, 0xff, sizeof &ictx->utf8_buf.data);
ictx->utf8_buf.data[0] = ch;
ictx->utf8_off = 1;
if (ch >= 0xc2 && ch <= 0xdf) {
log_debug2(":: u2");
input_state(ictx, input_state_utf8);
ictx->utf8_len = 1;
}
if (ch >= 0xe0 && ch <= 0xef) {
log_debug2(":: u3");
input_state(ictx, input_state_utf8);
ictx->utf8_len = 2;
}
if (ch >= 0xf0 && ch <= 0xf4) {
log_debug2(":: u4");
input_state(ictx, input_state_utf8);
ictx->utf8_len = 3;
}
return;
}
screen_write_put_character(&ictx->ctx, ch);
}