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Diffstat (limited to 'qemu-keymap.c')
| -rw-r--r-- | qemu-keymap.c | 258 |
1 files changed, 258 insertions, 0 deletions
diff --git a/qemu-keymap.c b/qemu-keymap.c new file mode 100644 index 0000000000..49e9167b86 --- /dev/null +++ b/qemu-keymap.c @@ -0,0 +1,258 @@ +/* + * QEMU keymap utility + * + * Copyright Red Hat, Inc. 2017 + * + * Authors: + * Gerd Hoffmann <kraxel@redhat.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ +#include "qemu/osdep.h" +#include "qemu-common.h" +#include "qapi-types.h" +#include "qemu/notify.h" +#include "ui/input.h" + +#include <xkbcommon/xkbcommon.h> + +struct xkb_rule_names names = { + .rules = NULL, + .model = "pc105", + .layout = "us", + .variant = NULL, + .options = NULL, +}; + +static xkb_mod_mask_t shift; +static xkb_mod_mask_t ctrl; +static xkb_mod_mask_t altgr; +static xkb_mod_mask_t numlock; + +static FILE *outfile; + +/* ------------------------------------------------------------------------ */ + +static uint32_t qcode_to_number(uint32_t qcode) +{ + KeyValue keyvalue; + uint32_t number; + + keyvalue.type = KEY_VALUE_KIND_QCODE; + keyvalue.u.qcode.data = qcode; + number = qemu_input_key_value_to_number(&keyvalue); + assert(number != 0); + return number; +} + +static void print_sym(xkb_keysym_t sym, uint32_t qcode, const char *mod) +{ + char name[64]; + + if (sym == XKB_KEY_NoSymbol) { + return; + } + xkb_keysym_get_name(sym, name, sizeof(name)); + + /* TODO: make ui/keymap.c parser accept QKeyCode names */ + fprintf(outfile, "%s 0x%02x%s\n", name, qcode_to_number(qcode), mod); +} + +static void walk_map(struct xkb_keymap *map, xkb_keycode_t code, void *data) +{ + struct xkb_state *state = data; + xkb_keysym_t kbase, knumlock, kshift, kaltgr, kaltgrshift; + uint32_t evdev, qcode; + char name[64]; + + fprintf(outfile, "\n"); + + /* + * map xkb keycode -> QKeyCode + * + * xkb keycode is linux evdev shifted by 8 + */ + evdev = code - 8; + qcode = qemu_input_linux_to_qcode(evdev); + if (qcode == Q_KEY_CODE_UNMAPPED) { + xkb_state_update_mask(state, 0, 0, 0, 0, 0, 0); + kbase = xkb_state_key_get_one_sym(state, code); + xkb_keysym_get_name(kbase, name, sizeof(name)); + fprintf(outfile, "# evdev %d (0x%x): no evdev -> QKeyCode mapping" + " (xkb keysym %s)\n", evdev, evdev, name); + return; + } + fprintf(outfile, "# evdev %d (0x%x), QKeyCode \"%s\", number 0x%x\n", + evdev, evdev, + QKeyCode_lookup.array[qcode], + qcode_to_number(qcode)); + + /* + * check which modifier states generate which keysyms + */ + xkb_state_update_mask(state, 0, 0, 0, 0, 0, 0); + kbase = xkb_state_key_get_one_sym(state, code); + print_sym(kbase, qcode, ""); + + xkb_state_update_mask(state, 0, 0, numlock, 0, 0, 0); + knumlock = xkb_state_key_get_one_sym(state, code); + if (kbase != knumlock) { + print_sym(knumlock, qcode, " numlock"); + } + + xkb_state_update_mask(state, shift, 0, 0, 0, 0, 0); + kshift = xkb_state_key_get_one_sym(state, code); + if (kbase != kshift && knumlock != kshift) { + print_sym(kshift, qcode, " shift"); + } + + xkb_state_update_mask(state, altgr, 0, 0, 0, 0, 0); + kaltgr = xkb_state_key_get_one_sym(state, code); + if (kbase != kaltgr) { + print_sym(kaltgr, qcode, " altgr"); + } + + xkb_state_update_mask(state, altgr | shift, 0, 0, 0, 0, 0); + kaltgrshift = xkb_state_key_get_one_sym(state, code); + if (kshift != kaltgrshift && kaltgr != kaltgrshift) { + print_sym(kaltgrshift, qcode, " shift altgr"); + } + return; +} + +static void usage(FILE *out) +{ + fprintf(out, + "\n" + "This tool generates qemu reverse keymaps from xkb keymaps,\n" + "which can be used with the qemu \"-k\" command line switch.\n" + "\n" + "usage: qemu-keymap <options>\n" + "options:\n" + " -h print this text\n" + " -f <file> set output file (default: stdout)\n" + " -m <model> set kbd model (default: %s)\n" + " -l <layout> set kbd layout (default: %s)\n" + " -v <variant> set kbd variant (default: %s)\n" + " -o <options> set kbd options (default: %s)\n" + "\n", + names.model, names.layout, + names.variant ?: "-", + names.options ?: "-"); +} + +int main(int argc, char *argv[]) +{ + struct xkb_context *ctx; + struct xkb_keymap *map; + struct xkb_state *state; + xkb_mod_index_t mod, mods; + int rc; + + for (;;) { + rc = getopt(argc, argv, "hm:l:v:o:f:"); + if (rc == -1) { + break; + } + switch (rc) { + case 'm': + names.model = optarg; + break; + case 'l': + names.layout = optarg; + break; + case 'v': + names.variant = optarg; + break; + case 'o': + names.options = optarg; + break; + case 'f': + outfile = fopen(optarg, "w"); + if (outfile == NULL) { + fprintf(stderr, "open %s: %s\n", optarg, strerror(errno)); + exit(1); + } + break; + case 'h': + usage(stdout); + exit(0); + default: + usage(stderr); + exit(1); + } + } + + if (outfile == NULL) { + outfile = stdout; + } + + fprintf(outfile, + "#\n" + "# generated by qemu-keymap\n" + "# model : %s\n" + "# layout : %s\n" + "# variant : %s\n" + "# options : %s\n" + "\n", + names.model, names.layout, + names.variant ?: "-", + names.options ?: "-"); + + ctx = xkb_context_new(XKB_CONTEXT_NO_FLAGS); + map = xkb_keymap_new_from_names(ctx, &names, XKB_KEYMAP_COMPILE_NO_FLAGS); + if (!map) { + /* libxkbcommon prints error */ + exit(1); + } + + fprintf(outfile, "# name: \"%s\"\n\n", + xkb_keymap_layout_get_name(map, 0)); + fprintf(outfile, "# modifiers\n"); + mods = xkb_keymap_num_mods(map); + for (mod = 0; mod < mods; mod++) { + fprintf(outfile, "# %2d: %s\n", + mod, xkb_keymap_mod_get_name(map, mod)); + } + + mod = xkb_keymap_mod_get_index(map, "Shift"); + shift = (1 << mod); + mod = xkb_keymap_mod_get_index(map, "Control"); + ctrl = (1 << mod); + mod = xkb_keymap_mod_get_index(map, "AltGr"); + altgr = (1 << mod); + mod = xkb_keymap_mod_get_index(map, "NumLock"); + numlock = (1 << mod); + + state = xkb_state_new(map); + xkb_keymap_key_for_each(map, walk_map, state); + + /* add quirks */ + fprintf(outfile, + "\n" + "#\n" + "# quirks section start\n" + "#\n" + "# Sometimes multiple keysyms map to the same keycodes.\n" + "# The keycode -> keysym lookup finds only one of the\n" + "# keysyms. So append them here.\n" + "#\n" + "\n"); + print_sym(XKB_KEY_Print, Q_KEY_CODE_SYSRQ, ""); + print_sym(XKB_KEY_Sys_Req, Q_KEY_CODE_SYSRQ, ""); + print_sym(XKB_KEY_Execute, Q_KEY_CODE_SYSRQ, ""); + + print_sym(XKB_KEY_KP_Decimal, Q_KEY_CODE_KP_DECIMAL, " numlock"); + print_sym(XKB_KEY_KP_Separator, Q_KEY_CODE_KP_DECIMAL, " numlock"); + + print_sym(XKB_KEY_Alt_R, Q_KEY_CODE_ALT_R, ""); + print_sym(XKB_KEY_ISO_Level3_Shift, Q_KEY_CODE_ALT_R, ""); + print_sym(XKB_KEY_Mode_switch, Q_KEY_CODE_ALT_R, ""); + + fprintf(outfile, + "\n" + "# quirks section end\n"); + + exit(0); +} |