wide character support

[pkg/abook.git] / abook_rl.c

diff --git a/abook_rl.c b/abook_rl.c
index 22c66ce497527d764776ddee531ec95444722776..f9ebba6529f32c7e4a3675e4aa4c75e0df1bec38 100644 (file)
--- a/abook_rl.c
+++ b/abook_rl.c
@@ -31,6 +31,10 @@
 #       include <history.h>
 #endif
 
+#ifdef HANDLE_MULTIBYTE
+#      include <wchar.h>
+#endif
+
 #define RL_READLINE_NAME       "Abook"
 
 static int rl_x, rl_y;
@@ -45,10 +49,42 @@ rl_refresh()
        wrefresh(rl_win);
 }
 
+#ifdef HANDLE_MULTIBYTE
+static int
+rline_calc_point()
+{
+       char *p;
+       int ret = 0;
+       
+       mbtowc(NULL, NULL, 0);
+       for(p = rl_line_buffer;(p - rl_line_buffer) < rl_point;) {
+               int a, l;
+               wchar_t wc;
+               
+               if((a = mbtowc(&wc, p, MB_CUR_MAX)) == 0)
+                       break;
+               else if (a == -1)
+                       return rl_point; /* fall back */
+               else
+                       p += a;
+
+               l = wcwidth(wc);
+               if(l > 0)
+                       ret += l;
+       }
+
+       return ret;
+}
+#endif
+
 static void
 rline_update()
 {      
+#ifdef HANDLE_MULTIBYTE
+       int real_point = rline_calc_point() + rl_x;
+#else
        int real_point = rl_point + rl_x;
+#endif
        
        if(real_point > (COLS - 1))
                mvwaddnstr(rl_win, rl_y, rl_x,