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add function edit_get_utf_char

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This commit is contained in:
Ilia Maslakov 2009-04-09 12:04:30 +00:00
parent b617640aab
commit 36bf010af6
1 changed files with 14 additions and 0 deletions
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14
edit/edit.c
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@ -118,6 +118,20 @@ int edit_get_byte (WEdit * edit, long byte_index)
}
}
char *edit_get_utf_char (WEdit * edit, long byte_index)
{
unsigned long p;
if (byte_index >= (edit->curs1 + edit->curs2) || byte_index < 0)
return NULL;
if (byte_index >= edit->curs1) {
p = edit->curs1 + edit->curs2 - byte_index - 1;
return str_get_next_char_safe (edit->buffers2[p >> S_EDIT_BUF_SIZE]+(EDIT_BUF_SIZE - (p & M_EDIT_BUF_SIZE) - 1));
} else {
return str_get_next_char_safe (edit->buffers1[byte_index >> S_EDIT_BUF_SIZE]+(byte_index & M_EDIT_BUF_SIZE));
}
}
/*
* Initialize the buffers for an empty files.
*/