kdrive: add options to set default XKB properties

This patch introduces convenient command-line options -xkb-rules,
-xkb-model, -xkb-layout, -xkb-variant, and -xkb-options, to set default
values for these properties.

These options can be handful for cases in which compile-time default
values don't match user locale, since kdrive doesn't support InputClass
matching rules yet and not all Linux distros provide default rules to
store these values in udev properties (which by the way is a discouraged
practice).

Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Laércio de Sousa <laerciosousa@sme-mogidascruzes.sp.gov.br>

hw/kdrive/src/kdrive.c

@@ -89,6 +89,11 @@ char *kdSwitchCmd;
 DDXPointRec kdOrigin;
 Bool kdHasPointer = FALSE;
 Bool kdHasKbd = FALSE;
+const char *kdGlobalXkbRules = NULL;
+const char *kdGlobalXkbModel = NULL;
+const char *kdGlobalXkbLayout = NULL;
+const char *kdGlobalXkbVariant = NULL;
+const char *kdGlobalXkbOptions = NULL;
 
 static Bool kdCaughtSignal = FALSE;
 
@@ -455,6 +460,11 @@ KdUseMsg(void)
         ("-mouse driver [,n,,options]    Specify the pointer driver and its options (n is the number of buttons)\n");
     ErrorF
         ("-keybd driver [,,options]      Specify the keyboard driver and its options\n");
+    ErrorF("-xkb-rules       Set default XkbRules value (can be overriden by -keybd options)\n");
+    ErrorF("-xkb-model       Set default XkbModel value (can be overriden by -keybd options)\n");
+    ErrorF("-xkb-layout      Set default XkbLayout value (can be overriden by -keybd options)\n");
+    ErrorF("-xkb-variant     Set default XkbVariant value (can be overriden by -keybd options)\n");
+    ErrorF("-xkb-options     Set default XkbOptions value (can be overriden by -keybd options)\n");
     ErrorF("-zaphod          Disable cursor screen switching\n");
     ErrorF("-2button         Emulate 3 button mouse\n");
     ErrorF("-3button         Disable 3 button mouse emulation\n");
@@ -563,6 +573,46 @@ KdProcessArgument(int argc, char **argv, int i)
         sscanf(argv[i], "vt%2d", &kdVirtualTerminal) == 1) {
         return 1;
     }
+    if (!strcmp(argv[i], "-xkb-rules")) {
+        if (i + 1 >= argc) {
+            UseMsg();
+            FatalError("Missing argument for option -xkb-rules.\n");
+        }
+        kdGlobalXkbRules = argv[i + 1];
+        return 2;
+    }
+    if (!strcmp(argv[i], "-xkb-model")) {
+        if (i + 1 >= argc) {
+            UseMsg();
+            FatalError("Missing argument for option -xkb-model.\n");
+        }
+        kdGlobalXkbModel = argv[i + 1];
+        return 2;
+    }
+    if (!strcmp(argv[i], "-xkb-layout")) {
+        if (i + 1 >= argc) {
+            UseMsg();
+            FatalError("Missing argument for option -xkb-layout.\n");
+        }
+        kdGlobalXkbLayout = argv[i + 1];
+        return 2;
+    }
+    if (!strcmp(argv[i], "-xkb-variant")) {
+        if (i + 1 >= argc) {
+            UseMsg();
+            FatalError("Missing argument for option -xkb-variant.\n");
+        }
+        kdGlobalXkbVariant = argv[i + 1];
+        return 2;
+    }
+    if (!strcmp(argv[i], "-xkb-options")) {
+        if (i + 1 >= argc) {
+            UseMsg();
+            FatalError("Missing argument for option -xkb-options.\n");
+        }
+        kdGlobalXkbOptions = argv[i + 1];
+        return 2;
+    }
     if (!strcmp(argv[i], "-mouse") || !strcmp(argv[i], "-pointer")) {
         if (i + 1 >= argc)
             UseMsg();

hw/kdrive/src/kinput.c

@@ -102,6 +102,12 @@ static int kdNumInputFds;
 
 extern Bool kdRawPointerCoordinates;
 
+extern const char *kdGlobalXkbRules;
+extern const char *kdGlobalXkbModel;
+extern const char *kdGlobalXkbLayout;
+extern const char *kdGlobalXkbVariant;
+extern const char *kdGlobalXkbOptions;
+
 static void
 KdSigio(int sig)
 {
@@ -909,11 +915,11 @@ KdNewKeyboard(void)
     ki->options = NULL;
     ki->name = strdup("Generic Keyboard");
     ki->path = NULL;
-    ki->xkbRules = strdup(XKB_DFLT_RULES);
-    ki->xkbModel = strdup(XKB_DFLT_MODEL);
-    ki->xkbLayout = strdup(XKB_DFLT_LAYOUT);
-    ki->xkbVariant = strdup(XKB_DFLT_VARIANT);
-    ki->xkbOptions = strdup(XKB_DFLT_OPTIONS);
+    ki->xkbRules = strdup(kdGlobalXkbRules ? kdGlobalXkbRules : XKB_DFLT_RULES);
+    ki->xkbModel = strdup(kdGlobalXkbModel ? kdGlobalXkbModel : XKB_DFLT_MODEL);
+    ki->xkbLayout = strdup(kdGlobalXkbLayout ? kdGlobalXkbLayout : XKB_DFLT_LAYOUT);
+    ki->xkbVariant = strdup(kdGlobalXkbVariant ? kdGlobalXkbVariant :XKB_DFLT_VARIANT);
+    ki->xkbOptions = strdup(kdGlobalXkbOptions ? kdGlobalXkbOptions : XKB_DFLT_OPTIONS);
 
     return ki;
 }