clients: Move keyboard-utils.[ch] into weston-simple-im

This is the only user of this code, so just include it in the simple im
source.
diff --git a/clients/weston-simple-im.c b/clients/weston-simple-im.c
index 6c61fe8..0583ebe 100644
--- a/clients/weston-simple-im.c
+++ b/clients/weston-simple-im.c
@@ -23,11 +23,13 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
 
 #include <linux/input.h>
 
 #include "window.h"
-#include "keyboard-utils.h"
 #include "input-method-client-protocol.h"
 
 enum compose_state {
@@ -70,6 +72,144 @@
 	XKB_KEY_Shift_R
 };
 
+typedef void (*keyboard_input_key_handler_t)(struct keyboard_input *keyboard_input,
+					     uint32_t time, uint32_t key, uint32_t unicode,
+					     enum wl_keyboard_key_state state, void *data);
+
+struct keyboard_input {
+	struct xkb_context *xkb_context;
+
+	uint32_t modifiers;
+
+	struct xkb_keymap *keymap;
+	struct xkb_state *state;
+	xkb_mod_mask_t control_mask;
+	xkb_mod_mask_t alt_mask;
+	xkb_mod_mask_t shift_mask;
+
+	void *user_data;
+	keyboard_input_key_handler_t key_handler;
+};
+
+static struct keyboard_input*
+keyboard_input_create(struct xkb_context *xkb_context)
+{
+	struct keyboard_input *keyboard_input;
+
+	keyboard_input = calloc(1, sizeof *keyboard_input);
+	keyboard_input->xkb_context = xkb_context;
+
+	return keyboard_input;
+}
+
+static void
+keyboard_input_handle_keymap(struct keyboard_input *keyboard_input,
+			     uint32_t format, int fd, uint32_t size)
+{
+	char *map_str;
+
+	if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) {
+		close(fd);
+		return;
+	}
+
+	map_str = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
+	if (map_str == MAP_FAILED) {
+		close(fd);
+		return;
+	}
+
+	keyboard_input->keymap = xkb_map_new_from_string(keyboard_input->xkb_context,
+							 map_str,
+							 XKB_KEYMAP_FORMAT_TEXT_V1,
+							 0);
+
+	munmap(map_str, size);
+	close(fd);
+
+	if (!keyboard_input->keymap) {
+		fprintf(stderr, "failed to compile keymap\n");
+		return;
+	}
+
+	keyboard_input->state = xkb_state_new(keyboard_input->keymap);
+	if (!keyboard_input->state) {
+		fprintf(stderr, "failed to create XKB state\n");
+		xkb_map_unref(keyboard_input->keymap);
+		return;
+	}
+
+	keyboard_input->control_mask =
+		1 << xkb_map_mod_get_index(keyboard_input->keymap, "Control");
+	keyboard_input->alt_mask =
+		1 << xkb_map_mod_get_index(keyboard_input->keymap, "Mod1");
+	keyboard_input->shift_mask =
+		1 << xkb_map_mod_get_index(keyboard_input->keymap, "Shift");
+}
+
+static void
+keyboard_input_handle_key(struct keyboard_input *keyboard_input,
+			  uint32_t serial, uint32_t time,
+			  uint32_t key, uint32_t state_w)
+{
+	uint32_t code;
+	uint32_t num_syms;
+	const xkb_keysym_t *syms;
+	xkb_keysym_t sym;
+	enum wl_keyboard_key_state state = state_w;
+
+	if (!keyboard_input->state)
+		return;
+
+	code = key + 8;
+	num_syms = xkb_key_get_syms(keyboard_input->state, code, &syms);
+
+	sym = XKB_KEY_NoSymbol;
+	if (num_syms == 1)
+		sym = syms[0];
+
+	if (keyboard_input->key_handler)
+		(*keyboard_input->key_handler)(keyboard_input, time, key, sym,
+					       state, keyboard_input->user_data);
+}
+
+static void
+keyboard_input_handle_modifiers(struct keyboard_input *keyboard_input,
+				uint32_t serial, uint32_t mods_depressed,
+				uint32_t mods_latched, uint32_t mods_locked,
+				uint32_t group)
+{
+	xkb_mod_mask_t mask;
+
+	xkb_state_update_mask(keyboard_input->state, mods_depressed, mods_latched,
+			      mods_locked, 0, 0, group);
+	mask = xkb_state_serialize_mods(keyboard_input->state,
+					XKB_STATE_DEPRESSED |
+					XKB_STATE_LATCHED);
+
+	keyboard_input->modifiers = 0;
+	if (mask & keyboard_input->control_mask)
+		keyboard_input->modifiers |= MOD_CONTROL_MASK;
+	if (mask & keyboard_input->alt_mask)
+		keyboard_input->modifiers |= MOD_ALT_MASK;
+	if (mask & keyboard_input->shift_mask)
+		keyboard_input->modifiers |= MOD_SHIFT_MASK;
+
+}
+
+static void
+keyboard_input_set_user_data(struct keyboard_input *keyboard_input, void *data)
+{
+	keyboard_input->user_data = data;
+}
+
+static void
+keyboard_input_set_key_handler(struct keyboard_input *keyboard_input,
+			       keyboard_input_key_handler_t handler)
+{
+	keyboard_input->key_handler = handler;
+}
+
 static void
 input_method_context_surrounding_text(void *data,
 				      struct input_method_context *context,