134 lines
3.4 KiB
C
134 lines
3.4 KiB
C
/*
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* Input method handling for QEmacs.
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*
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* Copyright (c) 2000 Fabrice Bellard.
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* Copyright (c) 2002-2020 Charlie Gordon.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "qe.h"
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static int default_input(qe__unused__ int *match_buf,
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qe__unused__ int match_buf_size,
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qe__unused__ int *match_len_ptr,
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qe__unused__ const u8 *data,
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qe__unused__ const unsigned int *buf,
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qe__unused__ int len)
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{
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return INPUTMETHOD_NOMATCH;
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}
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static int unicode_input(int *match_buf,
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int match_buf_size,
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int *match_len_ptr,
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qe__unused__ const u8 *data,
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const unsigned int *buf, int len)
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{
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int i, h, c;
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if (buf[0] != 'x')
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return INPUTMETHOD_NOMATCH;
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c = 0;
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if (len > 5)
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len = 5;
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for (i = 1; i < len; i++) {
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h = qe_digit_value(buf[i]);
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if (h >= 16)
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return INPUTMETHOD_NOMATCH;
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c = (c << 4) | h;
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}
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if (len == 5) {
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*match_len_ptr = len;
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match_buf[0] = c;
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return 1;
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} else {
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return INPUTMETHOD_MORECHARS;
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}
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}
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static InputMethod default_input_method = {
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"default", default_input, NULL, NULL,
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};
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static InputMethod unicode_input_method = {
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"unicode", unicode_input, NULL, NULL,
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};
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void register_input_method(InputMethod *m)
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{
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QEmacsState *qs = &qe_state;
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InputMethod **p;
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p = &qs->input_methods;
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while (*p != NULL) {
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p = &(*p)->next;
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}
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m->next = NULL;
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*p = m;
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}
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static void input_complete(CompleteState *cp)
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{
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QEmacsState *qs = cp->s->qe_state;
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InputMethod *m;
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for (m = qs->input_methods; m != NULL; m = m->next) {
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complete_test(cp, m->name);
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}
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}
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static InputMethod *find_input_method(const char *name)
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{
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QEmacsState *qs = &qe_state;
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InputMethod *m;
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for (m = qs->input_methods; m != NULL; m = m->next) {
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if (strequal(m->name, name))
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return m;
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}
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return NULL;
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}
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void do_set_input_method(EditState *s, const char *name)
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{
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InputMethod *m = find_input_method(name);
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if (m) {
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s->input_method = m;
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s->selected_input_method = m;
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} else {
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put_status(s, "'%s' not found", name);
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}
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}
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void do_switch_input_method(EditState *s)
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{
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if (s->input_method)
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s->input_method = NULL;
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else
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s->input_method = s->selected_input_method;
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}
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static CompletionDef input_completion = {
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"input", input_complete,
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};
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void init_input_methods(void)
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{
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register_input_method(&default_input_method);
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register_input_method(&unicode_input_method);
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qe_register_completion(&input_completion);
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}
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