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+/*
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+ * QEMU keymap utility
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+ *
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+ * Copyright Red Hat, Inc. 2017
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+ *
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+ * Authors:
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+ * Gerd Hoffmann <kraxel@redhat.com>
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+ *
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+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
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+ * See the COPYING file in the top-level directory.
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+ */
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+#include "qemu/osdep.h"
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+#include "qemu-common.h"
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+#include "qapi-types.h"
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+#include "qemu/notify.h"
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+#include "ui/input.h"
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+
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+#include <xkbcommon/xkbcommon.h>
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+
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+struct xkb_rule_names names = {
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+ .rules = NULL,
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+ .model = "pc105",
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+ .layout = "us",
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+ .variant = NULL,
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+ .options = NULL,
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+};
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+
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+static xkb_mod_mask_t shift;
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+static xkb_mod_mask_t ctrl;
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+static xkb_mod_mask_t altgr;
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+static xkb_mod_mask_t numlock;
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+
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+static FILE *outfile;
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+
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+/* ------------------------------------------------------------------------ */
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+
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+static uint32_t qcode_to_number(uint32_t qcode)
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+{
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+ KeyValue keyvalue;
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+ uint32_t number;
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+
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+ keyvalue.type = KEY_VALUE_KIND_QCODE;
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+ keyvalue.u.qcode.data = qcode;
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+ number = qemu_input_key_value_to_number(&keyvalue);
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+ assert(number != 0);
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+ return number;
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+}
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+
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+static void print_sym(xkb_keysym_t sym, uint32_t qcode, const char *mod)
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+{
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+ char name[64];
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+
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+ if (sym == XKB_KEY_NoSymbol) {
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+ return;
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+ }
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+ xkb_keysym_get_name(sym, name, sizeof(name));
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+
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+ /* TODO: make ui/keymap.c parser accept QKeyCode names */
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+ fprintf(outfile, "%s 0x%02x%s\n", name, qcode_to_number(qcode), mod);
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+}
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+
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+static void walk_map(struct xkb_keymap *map, xkb_keycode_t code, void *data)
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+{
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+ struct xkb_state *state = data;
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+ xkb_keysym_t kbase, knumlock, kshift, kaltgr, kaltgrshift;
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+ uint32_t evdev, qcode;
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+ char name[64];
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+
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+ fprintf(outfile, "\n");
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+
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+ /*
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+ * map xkb keycode -> QKeyCode
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+ *
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+ * xkb keycode is linux evdev shifted by 8
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+ */
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+ evdev = code - 8;
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+ qcode = qemu_input_linux_to_qcode(evdev);
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+ if (qcode == Q_KEY_CODE_UNMAPPED) {
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+ xkb_state_update_mask(state, 0, 0, 0, 0, 0, 0);
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+ kbase = xkb_state_key_get_one_sym(state, code);
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+ xkb_keysym_get_name(kbase, name, sizeof(name));
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+ fprintf(outfile, "# evdev %d (0x%x): no evdev -> QKeyCode mapping"
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+ " (xkb keysym %s)\n", evdev, evdev, name);
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+ return;
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+ }
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+ fprintf(outfile, "# evdev %d (0x%x), QKeyCode \"%s\", number 0x%x\n",
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+ evdev, evdev,
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+ QKeyCode_lookup.array[qcode],
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+ qcode_to_number(qcode));
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+
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+ /*
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+ * check which modifier states generate which keysyms
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+ */
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+ xkb_state_update_mask(state, 0, 0, 0, 0, 0, 0);
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+ kbase = xkb_state_key_get_one_sym(state, code);
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+ print_sym(kbase, qcode, "");
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+
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+ xkb_state_update_mask(state, 0, 0, numlock, 0, 0, 0);
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+ knumlock = xkb_state_key_get_one_sym(state, code);
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+ if (kbase != knumlock) {
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+ print_sym(knumlock, qcode, " numlock");
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+ }
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+
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+ xkb_state_update_mask(state, shift, 0, 0, 0, 0, 0);
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+ kshift = xkb_state_key_get_one_sym(state, code);
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+ if (kbase != kshift && knumlock != kshift) {
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+ print_sym(kshift, qcode, " shift");
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+ }
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+
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+ xkb_state_update_mask(state, altgr, 0, 0, 0, 0, 0);
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+ kaltgr = xkb_state_key_get_one_sym(state, code);
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+ if (kbase != kaltgr) {
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+ print_sym(kaltgr, qcode, " altgr");
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+ }
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+
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+ xkb_state_update_mask(state, altgr | shift, 0, 0, 0, 0, 0);
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+ kaltgrshift = xkb_state_key_get_one_sym(state, code);
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+ if (kshift != kaltgrshift && kaltgr != kaltgrshift) {
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+ print_sym(kaltgrshift, qcode, " shift altgr");
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+ }
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+ return;
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+}
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+
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+static void usage(FILE *out)
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+{
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+ fprintf(out,
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+ "\n"
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+ "This tool generates qemu reverse keymaps from xkb keymaps,\n"
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+ "which can be used with the qemu \"-k\" command line switch.\n"
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+ "\n"
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+ "usage: qemu-keymap <options>\n"
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+ "options:\n"
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+ " -h print this text\n"
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+ " -f <file> set output file (default: stdout)\n"
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+ " -m <model> set kbd model (default: %s)\n"
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+ " -l <layout> set kbd layout (default: %s)\n"
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+ " -v <variant> set kbd variant (default: %s)\n"
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+ " -o <options> set kbd options (default: %s)\n"
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+ "\n",
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+ names.model, names.layout,
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+ names.variant ?: "-",
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+ names.options ?: "-");
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+}
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+
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+int main(int argc, char *argv[])
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+{
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+ struct xkb_context *ctx;
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+ struct xkb_keymap *map;
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+ struct xkb_state *state;
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+ xkb_mod_index_t mod, mods;
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+ int rc;
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+
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+ for (;;) {
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+ rc = getopt(argc, argv, "hm:l:v:o:f:");
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+ if (rc == -1) {
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+ break;
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+ }
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+ switch (rc) {
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+ case 'm':
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+ names.model = optarg;
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+ break;
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+ case 'l':
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+ names.layout = optarg;
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+ break;
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+ case 'v':
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+ names.variant = optarg;
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+ break;
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+ case 'o':
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+ names.options = optarg;
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+ break;
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+ case 'f':
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+ outfile = fopen(optarg, "w");
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+ if (outfile == NULL) {
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+ fprintf(stderr, "open %s: %s\n", optarg, strerror(errno));
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+ exit(1);
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+ }
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+ break;
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+ case 'h':
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+ usage(stdout);
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+ exit(0);
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+ default:
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+ usage(stderr);
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+ exit(1);
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+ }
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+ }
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+
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+ if (outfile == NULL) {
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+ outfile = stdout;
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+ }
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+
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+ fprintf(outfile,
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+ "#\n"
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+ "# generated by qemu-keymap\n"
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+ "# model : %s\n"
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+ "# layout : %s\n"
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+ "# variant : %s\n"
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+ "# options : %s\n"
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+ "\n",
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+ names.model, names.layout,
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+ names.variant ?: "-",
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+ names.options ?: "-");
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+
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+ ctx = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
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+ map = xkb_keymap_new_from_names(ctx, &names, XKB_KEYMAP_COMPILE_NO_FLAGS);
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+ if (!map) {
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+ /* libxkbcommon prints error */
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+ exit(1);
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+ }
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+
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+ fprintf(outfile, "# name: \"%s\"\n\n",
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+ xkb_keymap_layout_get_name(map, 0));
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+ fprintf(outfile, "# modifiers\n");
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+ mods = xkb_keymap_num_mods(map);
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+ for (mod = 0; mod < mods; mod++) {
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+ fprintf(outfile, "# %2d: %s\n",
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+ mod, xkb_keymap_mod_get_name(map, mod));
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+ }
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+
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+ mod = xkb_keymap_mod_get_index(map, "Shift");
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+ shift = (1 << mod);
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+ mod = xkb_keymap_mod_get_index(map, "Control");
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+ ctrl = (1 << mod);
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+ mod = xkb_keymap_mod_get_index(map, "AltGr");
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+ altgr = (1 << mod);
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+ mod = xkb_keymap_mod_get_index(map, "NumLock");
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+ numlock = (1 << mod);
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+
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+ state = xkb_state_new(map);
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+ xkb_keymap_key_for_each(map, walk_map, state);
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+
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+ /* add quirks */
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+ fprintf(outfile,
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+ "\n"
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+ "#\n"
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+ "# quirks section start\n"
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+ "#\n"
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+ "# Sometimes multiple keysyms map to the same keycodes.\n"
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+ "# The keycode -> keysym lookup finds only one of the\n"
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+ "# keysyms. So append them here.\n"
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+ "#\n"
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+ "\n");
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+ print_sym(XKB_KEY_Print, Q_KEY_CODE_SYSRQ, "");
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+ print_sym(XKB_KEY_Sys_Req, Q_KEY_CODE_SYSRQ, "");
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+ print_sym(XKB_KEY_Execute, Q_KEY_CODE_SYSRQ, "");
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+
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+ print_sym(XKB_KEY_KP_Decimal, Q_KEY_CODE_KP_DECIMAL, " numlock");
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+ print_sym(XKB_KEY_KP_Separator, Q_KEY_CODE_KP_DECIMAL, " numlock");
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+
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+ print_sym(XKB_KEY_Alt_R, Q_KEY_CODE_ALT_R, "");
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+ print_sym(XKB_KEY_ISO_Level3_Shift, Q_KEY_CODE_ALT_R, "");
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+ print_sym(XKB_KEY_Mode_switch, Q_KEY_CODE_ALT_R, "");
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+
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+ fprintf(outfile,
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+ "\n"
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+ "# quirks section end\n");
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+
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+ exit(0);
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+}
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Gerd Hoffmann