bool buffer_insert0(Buffer *buf, size_t pos, const char *data) {
if (pos == 0)
return buffer_prepend0(buf, data);
if (pos == buf->len)
return buffer_append0(buf, data);
return buffer_insert(buf, pos, data, strlen(data));
}
static void vis_keys_process(Vis *vis) {
Buffer *buf = vis->keys;
char *keys = buf->data, *start = keys, *cur = keys, *end;
bool prefix = false, unknown_key = false;
KeyBinding *binding = NULL;
vis->keyhandler = true;
while (cur && *cur) {
if (!(end = (char*)vis_keys_next(vis, cur))) {
unknown_key = true;
goto out;
}
char tmp = *end;
*end = '\0';
prefix = false;
binding = NULL;
for (Mode *mode = vis->mode; mode && !binding && !prefix; mode = mode->parent) {
for (int global = 0; global < 2 && !binding && !prefix; global++) {
Mode *mode_local = global || !vis->win ? mode : &vis->win->modes[mode->id];
if (!mode_local->bindings)
continue;
binding = map_get(mode_local->bindings, start);
/* "<" is never treated as a prefix because it is used to denote
* special key symbols */
if (strcmp(cur, "<"))
prefix = !binding && map_contains(mode_local->bindings, start);
}
}
*end = tmp;
if (binding) { /* exact match */
if (binding->action) {
end = (char*)binding->action->func(vis, end, &binding->action->arg);
if (!end)
break;
start = cur = end;
} else if (binding->alias) {
buffer_put0(buf, end);
buffer_prepend0(buf, binding->alias);
start = cur = buf->data;
}
} else if (prefix) { /* incomplete key binding? */
cur = end;
} else { /* no keybinding */
KeyAction *action = NULL;
if (start[0] == '<' && end[-1] == '>') {
/* test for special editor key command */
char tmp = end[-1];
end[-1] = '\0';
action = map_get(vis->actions, start+1);
end[-1] = tmp;
if (action) {
end = (char*)action->func(vis, end, &action->arg);
if (!end)
break;
}
}
if (!action && vis->mode->input)
vis->mode->input(vis, start, end - start);
start = cur = end;
}
}
out:
if (unknown_key)
buffer_truncate(buf);
else
buffer_put0(buf, start);
vis->keyhandler = false;
}
static const char *vis_keys_raw(Vis *vis, Buffer *buf, const char *input) {
char *keys = buf->data, *start = keys, *cur = keys, *end;
bool prefix = false;
KeyBinding *binding = NULL;
while (cur && *cur) {
if (!(end = (char*)vis_keys_next(vis, cur)))
goto err; // XXX: can't parse key this should never happen
char tmp = *end;
*end = '\0';
prefix = false;
binding = NULL;
for (Mode *mode = vis->mode; mode && !binding && !prefix; mode = mode->parent) {
for (int global = 0; global < 2 && !binding && !prefix; global++) {
Mode *mode_local = global ? mode : &vis->win->modes[mode->id];
if (!mode_local->bindings)
continue;
binding = map_get(mode_local->bindings, start);
/* "<" is never treated as a prefix because it is used to denote
* special key symbols */
if (strcmp(cur, "<"))
prefix = !binding && map_contains(mode_local->bindings, start);
}
}
*end = tmp;
vis->keys = buf;
if (binding) { /* exact match */
if (binding->action) {
end = (char*)binding->action->func(vis, end, &binding->action->arg);
if (!end)
break;
start = cur = end;
} else if (binding->alias) {
buffer_put0(buf, end);
buffer_prepend0(buf, binding->alias);
start = cur = buf->data;
}
} else if (prefix) { /* incomplete key binding? */
cur = end;
} else { /* no keybinding */
KeyAction *action = NULL;
if (start[0] == '<' && end[-1] == '>') {
/* test for special editor key command */
char tmp = end[-1];
end[-1] = '\0';
action = map_get(vis->actions, start+1);
end[-1] = tmp;
if (action) {
end = (char*)action->func(vis, end, &action->arg);
if (!end)
break;
}
}
if (!action && vis->mode->input)
vis->mode->input(vis, start, end - start);
start = cur = end;
}
}
vis->keys = NULL;
buffer_put0(buf, start);
return input + (start - keys);
err:
vis->keys = NULL;
buffer_truncate(buf);
return input + strlen(input);
}
