keymaps support (initial patch by Johannes Schindelin)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1173 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 143 insertions, 0 deletions

diff --git a/keymaps.c b/keymaps.c
new file mode 100644
index 0000000000..c3de8d7649
--- /dev/null
+++ b/keymaps.c
@@ -0,0 +1,143 @@
+/*
+ * QEMU keysym to keycode conversion using rdesktop keymaps
+ * 
+ * Copyright (c) 2004 Johannes Schindelin
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+static int get_keysym(const char *name)
+{
+    name2keysym_t *p;
+    for(p = name2keysym; p->name != NULL; p++) {
+        if (!strcmp(p->name, name))
+            return p->keysym;
+    }
+    return 0;
+}
+
+#define MAX_NORMAL_KEYCODE 512
+#define MAX_EXTRA_COUNT 256
+typedef struct {
+    uint16_t keysym2keycode[MAX_NORMAL_KEYCODE];
+    struct {
+	int keysym;
+	uint16_t keycode;
+    } keysym2keycode_extra[MAX_EXTRA_COUNT];
+    int extra_count;
+} kbd_layout_t;
+
+static kbd_layout_t *parse_keyboard_layout(const char *language,
+					   kbd_layout_t * k)
+{
+    FILE *f;
+    char file_name[1024];
+    char line[1024];
+    int len;
+
+    snprintf(file_name, sizeof(file_name),
+             "%s/keymaps/%s", bios_dir, language);
+
+    if (!k)
+	k = qemu_mallocz(sizeof(kbd_layout_t));
+    if (!k)
+        return 0;
+    if (!(f = fopen(file_name, "r"))) {
+	fprintf(stderr,
+		"Could not read keymap file: '%s'\n", file_name);
+	return 0;
+    }
+    for(;;) {
+	if (fgets(line, 1024, f) == NULL)
+            break;
+        len = strlen(line);
+        if (len > 0 && line[len - 1] == '\n')
+            line[len - 1] = '\0';
+        if (line[0] == '#')
+	    continue;
+	if (!strncmp(line, "map ", 4))
+	    continue;
+	if (!strncmp(line, "include ", 8)) {
+	    parse_keyboard_layout(line + 8, k);
+        } else {
+	    char *end_of_keysym = line;
+	    while (*end_of_keysym != 0 && *end_of_keysym != ' ')
+		end_of_keysym++;
+	    if (*end_of_keysym) {
+		int keysym;
+		*end_of_keysym = 0;
+		keysym = get_keysym(line);
+		if (keysym == 0) {
+                    //		    fprintf(stderr, "Warning: unknown keysym %s\n", line);
+		} else {
+		    const char *rest = end_of_keysym + 1;
+		    int keycode = strtol(rest, NULL, 0);
+		    /* if(keycode&0x80)
+		       keycode=(keycode<<8)^0x80e0; */
+		    if (keysym < MAX_NORMAL_KEYCODE) {
+			//fprintf(stderr,"Setting keysym %s (%d) to %d\n",line,keysym,keycode);
+			k->keysym2keycode[keysym] = keycode;
+		    } else {
+			if (k->extra_count >= MAX_EXTRA_COUNT) {
+			    fprintf(stderr,
+				    "Warning: Could not assign keysym %s (0x%x) because of memory constraints.\n",
+				    line, keysym);
+			} else {
+			    fprintf(stderr, "Setting %d: %d,%d\n",
+				    k->extra_count, keysym, keycode);
+			    k->keysym2keycode_extra[k->extra_count].
+				keysym = keysym;
+			    k->keysym2keycode_extra[k->extra_count].
+				keycode = keycode;
+			    k->extra_count++;
+			}
+		    }
+		}
+	    }
+	}
+    }
+    fclose(f);
+    return k;
+}
+
+static void *init_keyboard_layout(const char *language)
+{
+    return parse_keyboard_layout(language, 0);
+}
+
+static int keysym2scancode(void *kbd_layout, int keysym)
+{
+    kbd_layout_t *k = kbd_layout;
+    if (keysym < MAX_NORMAL_KEYCODE) {
+	if (k->keysym2keycode[keysym] == 0)
+	    fprintf(stderr, "Warning: no scancode found for keysym %d\n",
+		    keysym);
+	return k->keysym2keycode[keysym];
+    } else {
+	int i;
+#ifdef XK_ISO_Left_Tab
+	if (keysym == XK_ISO_Left_Tab)
+	    keysym = XK_Tab;
+#endif
+	for (i = 0; i < k->extra_count; i++)
+	    if (k->keysym2keycode_extra[i].keysym == keysym)
+		return k->keysym2keycode_extra[i].keycode;
+    }
+    return 0;
+}