From f4e0469f062718b1bdb58187287acd95780829a7 Mon Sep 17 00:00:00 2001
From: okan <okan@openbsd.org>
Date: Tue, 7 Aug 2012 14:05:49 +0000
Subject: [PATCH] support multibyte input to menu code; from Alexander Polakov
 with a tiny tweak.

---
 app/cwm/calmwm.c |  7 ++++++-
 app/cwm/menu.c   | 42 ++++++++++++++++++++----------------------
 2 files changed, 26 insertions(+), 23 deletions(-)

diff --git a/app/cwm/calmwm.c b/app/cwm/calmwm.c
index 73526ba0e..a9a7cd2f0 100644
--- a/app/cwm/calmwm.c
+++ b/app/cwm/calmwm.c
@@ -15,7 +15,7 @@
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  *
- * $OpenBSD: calmwm.c,v 1.64 2012/07/18 21:53:22 okan Exp $
+ * $OpenBSD: calmwm.c,v 1.65 2012/08/07 14:05:49 okan Exp $
  */
 
 #include <sys/param.h>
@@ -25,6 +25,7 @@
 #include <err.h>
 #include <errno.h>
 #include <getopt.h>
+#include <locale.h>
 #include <signal.h>
 #include <stdlib.h>
 #include <string.h>
@@ -62,6 +63,10 @@ main(int argc, char **argv)
 	char		*display_name = NULL;
 	int		 ch;
 
+	if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
+		warnx("no locale support");
+	mbtowc(NULL, NULL, MB_CUR_MAX);
+
 	while ((ch = getopt(argc, argv, "c:d:")) != -1) {
 		switch (ch) {
 		case 'c':
diff --git a/app/cwm/menu.c b/app/cwm/menu.c
index 7452c420b..3423d6e05 100644
--- a/app/cwm/menu.c
+++ b/app/cwm/menu.c
@@ -16,7 +16,7 @@
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  *
- * $OpenBSD: menu.c,v 1.35 2012/07/13 15:21:35 okan Exp $
+ * $OpenBSD: menu.c,v 1.36 2012/08/07 14:05:49 okan Exp $
  */
 
 #include <sys/param.h>
@@ -68,7 +68,7 @@ static void		 menu_draw(struct screen_ctx *, struct menu_ctx *,
 			     struct menu_q *, struct menu_q *);
 static int		 menu_calc_entry(struct screen_ctx *, struct menu_ctx *,
 			     int, int);
-static int		 menu_keycode(KeyCode, u_int, enum ctltype *,
+static int		 menu_keycode(XKeyEvent *, enum ctltype *,
                              char *);
 
 void
@@ -208,16 +208,22 @@ menu_handle_key(XEvent *e, struct menu_ctx *mc, struct menu_q *menuq,
 {
 	struct menu	*mi;
 	enum ctltype	 ctl;
-	char		 chr;
+	char		 chr[32];
 	size_t		 len;
+	int 		 clen, i;
+	wchar_t 	 wc;
 
-	if (menu_keycode(e->xkey.keycode, e->xkey.state, &ctl, &chr) < 0)
+	if (menu_keycode(&e->xkey, &ctl, chr) < 0)
 		return (NULL);
 
 	switch (ctl) {
 	case CTL_ERASEONE:
 		if ((len = strlen(mc->searchstr)) > 0) {
-			mc->searchstr[len - 1] = '\0';
+			clen = 1;
+			while (mbtowc(&wc, &mc->searchstr[len-clen], MB_CUR_MAX) == -1)
+				clen++;
+			for (i = 1; i <= clen; i++)
+				mc->searchstr[len - i] = '\0';
 			mc->changed = 1;
 		}
 		break;
@@ -267,13 +273,9 @@ menu_handle_key(XEvent *e, struct menu_ctx *mc, struct menu_q *menuq,
 		break;
 	}
 
-	if (chr != '\0') {
-		char str[2];
-
-		str[0] = chr;
-		str[1] = '\0';
+	if (chr[0] != '\0') {
 		mc->changed = 1;
-		(void)strlcat(mc->searchstr, str, sizeof(mc->searchstr));
+		(void)strlcat(mc->searchstr, chr, sizeof(mc->searchstr));
 	}
 
 	mc->noresult = 0;
@@ -459,14 +461,16 @@ menu_calc_entry(struct screen_ctx *sc, struct menu_ctx *mc, int x, int y)
 }
 
 static int
-menu_keycode(KeyCode kc, u_int state, enum ctltype *ctl, char *chr)
+menu_keycode(XKeyEvent *ev, enum ctltype *ctl, char *chr)
 {
-	int	 ks;
+	KeySym	 ks;
+	u_int 	 state = ev->state;
 
 	*ctl = CTL_NONE;
-	*chr = '\0';
+	chr[0] = '\0';
 
-	ks = XkbKeycodeToKeysym(X_Dpy, kc, 0, (state & ShiftMask) ? 1 : 0);
+	ks = XkbKeycodeToKeysym(X_Dpy, ev->keycode, 0,
+	     (state & ShiftMask) ? 1 : 0);
 
 	/* Look for control characters. */
 	switch (ks) {
@@ -532,14 +536,8 @@ menu_keycode(KeyCode kc, u_int state, enum ctltype *ctl, char *chr)
 	if (*ctl != CTL_NONE)
 		return (0);
 
-	/*
-	 * For regular characters, only (part of, actually) Latin 1
-	 * for now.
-	 */
-	if (ks < 0x20 || ks > 0x07e)
+	if (XLookupString(ev, chr, 32, &ks, NULL) < 0)
 		return (-1);
 
-	*chr = (char)ks;
-
 	return (0);
 }