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Assume UTF-8 for incoming bytes.

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This commit is contained in:
Michael Jumper 2013-04-15 15:24:21 -07:00
parent 0dabb97f01
commit cb4abb9115
1 changed files with 47 additions and 2 deletions
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49
protocols/ssh/src/terminal_handlers.c
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@ -42,7 +42,48 @@
int guac_terminal_echo(guac_terminal* term, char c) {
switch (c) {
static int bytes_remaining = 0;
static int codepoint = 0;
/* 1-byte UTF-8 codepoint */
if ((c & 0x80) == 0x00) { /* 0xxxxxxx */
codepoint = c & 0x7F;
bytes_remaining = 0;
}
/* 2-byte UTF-8 codepoint */
else if ((c & 0xE0) == 0xC0) { /* 110xxxxx */
codepoint = c & 0x1F;
bytes_remaining = 1;
}
/* 3-byte UTF-8 codepoint */
else if ((c & 0xF0) == 0xE0) { /* 1110xxxx */
codepoint = c & 0x0F;
bytes_remaining = 2;
}
/* 4-byte UTF-8 codepoint */
else if ((c & 0xF8) == 0xF0) { /* 11110xxx */
codepoint = c & 0x07;
bytes_remaining = 3;
}
/* Continuation of UTF-8 codepoint */
else if ((c & 0xC0) == 0x80) { /* 10xxxxxx */
codepoint = (codepoint << 6) | (c & 0x3F);
bytes_remaining--;
}
else {
/* FIXME: Handle */
}
/* If we need more bytes, wait for more bytes */
if (bytes_remaining != 0)
return 0;
switch (codepoint) {
/* Bell */
case 0x07:
@ -98,11 +139,15 @@ int guac_terminal_echo(guac_terminal* term, char c) {
}
/* For now, render all but basic latin as '?' */
if (codepoint > 0x7F)
codepoint = '?';
/* Write character */
guac_terminal_set(term,
term->cursor_row,
term->cursor_col,
c);
(char) codepoint);
/* Advance cursor */
term->cursor_col++;