[Curses] Choose curses so library at startup (4/5)

[Peter Berg Larsen <pebl@xxxxxxxxxx>]

Changelog:
- Try ncursesw, ncurses and curses so library before giving up at startup

diff -ur wine-20031016/programs/wineconsole/curses.c wine-my/programs/wineconsole/curses.c
--- wine-20031016/programs/wineconsole/curses.c	2003-10-15 23:01:05.000000000 +0200
+++ wine-my/programs/wineconsole/curses.c	2003-11-14 05:20:46.000000000 +0100
@@ -61,14 +61,6 @@
 #define PRIVATE(data)   ((struct inner_data_curse*)((data)->private))
 
 #if defined(HAVE_CURSES_H) || defined(HAVE_NCURSES_H) || defined(HAVE_NCURSESW_NCURSES_H)
-
-#ifdef HAVE_NCURSESW_NCURSES_H
-# define CURSES_NAME "ncursesw"
-#elif defined(HAVE_NCURSES_H)
-# define CURSES_NAME "ncurses"
-#else
-# define CURSES_NAME "curses"
-#endif
 
 struct inner_data_curse 
 {
@@ -79,8 +71,29 @@
     int                 allow_scroll;
 };
 
+struct curses_type
+{
+    char *name;
+    char *soname;
+    int  sizeof_char;
+};
+
+static const struct curses_type curses_known [] = 
+  {
+#ifdef SONAME_LIBCURSES
+      {"curses",   SONAME_LIBCURSES  , sizeof(chtype)},
+#endif
+#ifdef SONAME_LIBNCURSES
+      {"ncurses",  SONAME_LIBNCURSES , sizeof(chtype)}, 
+#endif
+#ifdef SONAME_LIBNCURSESW
+      {"ncursesw", SONAME_LIBNCURSESW, sizeof(cchar_t)},
+#endif
+  };
+#define NC_MAX_KNOWN (sizeof(curses_known)/sizeof(curses_known[0]))
 
 static void *nc_handle = NULL;
+static const struct curses_type *nc_type = NULL;
 
 #define MAKE_FUNCPTR(f) static typeof(f) * p_##f;
 
@@ -121,18 +134,26 @@
 
 static BOOL WCCURSES_bind_libcurses(void)
 {
-#ifdef HAVE_NCURSES_H
-    static const char *ncname = SONAME_LIBNCURSES;
-#else
-    static const char *ncname = SONAME_LIBCURSES;
-#endif
+    int nc_no = NC_MAX_KNOWN -1;
+    char err_buf[256];
+    
+ retry:
+    while(nc_no >= 0) 
+    {
+	nc_type = &curses_known[nc_no];
+	nc_handle = wine_dlopen(nc_type->soname, RTLD_NOW, err_buf, 256);
+	if (nc_handle) break;
+	WINE_TRACE("dlopening %s (%s) failed:\n%s\n",
+		   nc_type->name,nc_type->soname,err_buf);
+	nc_no--;
+    }
 
-    nc_handle = wine_dlopen(ncname, RTLD_NOW, NULL, 0);
-    if(!nc_handle)
+    if (nc_no < 0) 
     {
-        WINE_MESSAGE("Wine cannot find the " CURSES_NAME " library (%s).\n",
-                     ncname);
-        return FALSE;
+        WINE_WARN("Wine cannot find any suitable variants of the curses library:\n");
+	for (nc_no = NC_MAX_KNOWN - 1; nc_no >= 0; nc_no--)
+	    WINE_WARN("%s\n",curses_known[nc_no].soname);
+	return FALSE;
     }
 
 #define LOAD_FUNCPTR(f)                                      \
@@ -175,16 +196,18 @@
 
 #undef LOAD_FUNCPTR
 
+    WINE_TRACE("Using %s (%s) at %p.\n",nc_type->name,nc_type->soname,nc_handle);
     return TRUE;
 
 sym_not_found:
     WINE_MESSAGE(
-      "Wine cannot find certain functions that it needs inside the "
-       CURSES_NAME "\nlibrary.  To enable Wine to use " CURSES_NAME 
-      " please upgrade your " CURSES_NAME "\nlibraries\n");
+      "Wine cannot find certain functions that it needs inside the %s\n"
+      "library.  To enable Wine to use %s please upgrade your %s\n"
+      "libraries (%s)\n",nc_type->name,nc_type->name,nc_type->name,nc_type->soname);
     wine_dlclose(nc_handle, NULL, 0);
     nc_handle = NULL;
-    return FALSE;
+    nc_no--;
+    goto retry;
 }
 
 #define curs_set p_curs_set
@@ -232,10 +255,10 @@
         WINE_FIXME("Cannot create pad\n");
     if (PRIVATE(data)->line) 
 	PRIVATE(data)->line = HeapReAlloc(GetProcessHeap(), 0, PRIVATE(data)->line, 
-                                      sizeof(chtype) * data->curcfg.sb_width);
+					  nc_type->sizeof_char * data->curcfg.sb_width);
     else 
 	PRIVATE(data)->line = HeapAlloc(GetProcessHeap(), 0, 
-                                      sizeof(chtype) * data->curcfg.sb_width);
+					nc_type->sizeof_char * data->curcfg.sb_width);
     if (!PRIVATE(data)->line)
         WINE_FIXME("Cannot create line\n");
 }