Lua:

* add action_get_touchscreen_press wrapper
 * fix kbd_input wrapper
 * rework luaL_loadfile
 * add rb.contexts


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21046 a1c6a512-1295-4272-9138-f99709370657

apps/plugin.c

@@ -644,6 +644,10 @@ static const struct plugin_api rockbox_api = {
     appsversion,
     /* new stuff at the end, sort into place next time
        the API gets incompatible */
+
+#ifdef HAVE_TOUCHSCREEN
+    action_get_touchscreen_press,
+#endif
 };
 
 int plugin_load(const char* plugin, const void* parameter)

apps/plugin.h

@@ -128,7 +128,7 @@ void* plugin_get_buffer(size_t *buffer_size);
 #define PLUGIN_MAGIC 0x526F634B /* RocK */
 
 /* increase this every time the api struct changes */
-#define PLUGIN_API_VERSION 151
+#define PLUGIN_API_VERSION 152
 
 /* update this to latest version if a change to the api struct breaks
    backwards compatibility (and please take the opportunity to sort in any
@@ -806,6 +806,10 @@ struct plugin_api {
     const char *appsversion;
     /* new stuff at the end, sort into place next time
        the API gets incompatible */
+
+#ifdef HAVE_TOUCHSCREEN
+    int (*action_get_touchscreen_press)(short *x, short *y);
+#endif
 };
 
 /* plugin header */

apps/plugins/lua/action_helper.pl

@@ -22,21 +22,38 @@ $input = $ARGV[0] . "/../../action.h";
 
 open(ACTION, "<$input") or die "Can't open $input!";
 
-print "-- Don't change this file!\n";
-print "-- It is automatically generated of action.h\n";
-print "rb.actions = {\n";
-
 $i = 0;
+$j = 0;
 while(my $line = <ACTION>)
 {
     chomp($line);
-    if($line =~ /^\s*(ACTION_[^\s]+)(\s*=.*)?,$/)
+    if($line =~ /^\s*(ACTION_[^\s]+)(\s*=.*)?,\s*$/)
     {
-        printf "\t%s = %d,\n", $1, $i;
+        $actions[$i] = sprintf("\t%s = %d,\n", $1, $i);
         $i++;
     }
+    elsif($line =~ /^\s*(CONTEXT_[^\s]+)(\s*=.*)?,\s*$/)
+    {
+        $contexts[$j] = sprintf("\t%s = %d,\n", $1, $j);
+        $j++;
+    }
 }
 
+close(ACTION);
+
+print "-- Don't change this file!\n";
+printf "-- It is automatically generated of action.h %s\n", '$Revision';
+
+print "rb.actions = {\n";
+foreach $action(@actions)
+{
+    print $action;
+}
 print "}\n";
 
-close(ACTION);
+print "rb.contexts = {\n";
+foreach $context(@contexts)
+{
+    print $context;
+}
+print "}\n";

apps/plugins/lua/lauxlib.c

@@ -547,60 +547,62 @@ static int errfile (lua_State *L, const char *what, int fnameindex) {
   return LUA_ERRFILE;
 }
 
+static void make_path(char* dest, size_t dest_size, char* curfile, char* newfile)
+{
+    char* pos = rb->strrchr(curfile, '/');
+    if(pos != NULL)
+    {
+        unsigned int len = (unsigned int)(pos - curfile);
+        len = len + 1 > dest_size ? dest_size - 1 : len;
+
+        if(len > 0)
+            memcpy(dest, curfile, len);
+
+        dest[len] = '/';
+        dest[len+1] = '\0';
+    }
+    else
+        dest[0] = '\0';
+
+    strncat(dest, newfile, dest_size - strlen(dest));
+}
 
 LUALIB_API int luaL_loadfile (lua_State *L, const char *filename) {
   LoadF lf;
-  int status; //, readstatus;
+  int status;
   char buffer[MAX_PATH];
-//  int c;
   int fnameindex = lua_gettop(L) + 1;  /* index of filename on the stack */
   lf.extraline = 0;
-//  if (filename == NULL) {
-//    lua_pushliteral(L, "=stdin");
-//    lf.f = stdin;
-//  }
-//  else {
-    lua_pushfstring(L, "@%s", filename);
-    lf.f = rb->open(filename, O_RDONLY);
-    if (lf.f < 0)
-    {
-        /* Fallback */
-        snprintf(buffer, sizeof(buffer), "%s/%s", curpath, filename);
-        lf.f = rb->open(buffer, O_RDONLY);
+  lf.f = rb->open(filename, O_RDONLY);
+  if(lf.f < 0) {
+    /* Fallback */
 
-        if(lf.f < 0)
-        {
-            snprintf(buffer, sizeof(buffer), "%s/%s", VIEWERS_DIR, filename);
-            lf.f = rb->open(buffer, O_RDONLY);
+    lua_Debug ar;
+    if(lua_getstack(L, 1, &ar)) {
+      lua_getinfo(L, "S", &ar);
 
-            if(lf.f < 0)
-                return errfile(L, "open", fnameindex);
-        }
+      /* Try determining the base path of the current Lua chunk
+         and prepend it to filename in buffer. */
+      make_path(buffer, sizeof(buffer), (char*)&ar.source[1], (char*)filename);
+      lf.f = rb->open(buffer, O_RDONLY);
     }
-//  }
-//  c = getc(lf.f);
-//  if (c == '#') {  /* Unix exec. file? */
-//    lf.extraline = 1;
-//    while ((c = getc(lf.f)) != EOF && c != '\n') ;  /* skip first line */
-//    if (c == '\n') c = getc(lf.f);
-//  }
-//  if (c == LUA_SIGNATURE[0]) { // && lf.f != stdin) {  /* binary file? */
-//    rb->close(lf.f);
-//    lf.f = rb->open(filename, O_RDONLY);  /* reopen in binary mode */
-//    if (lf.f < 0) return errfile(L, "reopen", fnameindex);
-    /* skip eventual `#!...' */
-//   while ((c = getc(lf.f)) != EOF && c != LUA_SIGNATURE[0]) ;
-//    lf.extraline = 0;
-//  }
-//  ungetc(c, lf.f);
+
+    if(lf.f < 0) {
+      snprintf(buffer, sizeof(buffer), "%s/%s", VIEWERS_DIR, filename);
+      lf.f = rb->open(buffer, O_RDONLY);
+
+      if(lf.f < 0)
+        return errfile(L, "open", fnameindex);
+    }
+
+    if(lf.f >= 0)
+      lua_pushfstring(L, "@%s", buffer);
+  }
+  else
+    lua_pushfstring(L, "@%s", filename);
+
   status = lua_load(L, getF, &lf, lua_tostring(L, -1));
-//  readstatus = ferror(lf.f);
-  //if (lf.f != stdin) rb->close(lf.f);  /* close file (even in case of errors) */
   rb->close(lf.f);
-//  if (readstatus) {
-//    lua_settop(L, fnameindex);  /* ignore results from `lua_load' */
-//    return errfile(L, "read", fnameindex);
-//  }
   lua_remove(L, fnameindex);
   return status;
 }
@@ -653,9 +655,10 @@ static void *l_alloc (void *ud, void *ptr, size_t osize, size_t nsize) {
 
 
 static int panic (lua_State *L) {
-    (void)L;  /* to avoid warnings */
     DEBUGF("PANIC: unprotected error in call to Lua API (%s)\n",
         lua_tostring(L, -1));
+    rb->splashf(5 * HZ, "PANIC: unprotected error in call to Lua API (%s)",
+        lua_tostring(L, -1));
 
     return 0;
 }

apps/plugins/lua/rocklib.c

@@ -251,6 +251,19 @@ RB_WRAP(get_action)
     return 1;
 }
 
+#ifdef HAVE_TOUCHSCREEN
+RB_WRAP(action_get_touchscreen_press)
+{
+    short x, y;
+    int result = rb->action_get_touchscreen_press(&x, &y);
+
+    lua_pushinteger(L, result);
+    lua_pushinteger(L, x);
+    lua_pushinteger(L, y);
+    return 3;
+}
+#endif
+
 RB_WRAP(action_userabort)
 {
     int timeout = luaL_checkint(L, 1);
@@ -261,10 +274,15 @@ RB_WRAP(action_userabort)
 
 RB_WRAP(kbd_input)
 {
-    char* buffer = (char*)luaL_checkstring(L, 1);
-    int buflen = luaL_checkint(L, 2);
-    int result = rb->kbd_input(buffer, buflen);
-    lua_pushinteger(L, result);
+    luaL_Buffer b;
+    luaL_buffinit(L, &b);
+
+    char *buffer = luaL_prepbuffer(&b);
+    buffer[0] = '\0';
+    rb->kbd_input(buffer, LUAL_BUFFERSIZE);
+    luaL_addsize(&b, strlen(buffer));
+
+    luaL_pushresult(&b);
     return 1;
 }
 
@@ -467,6 +485,9 @@ static const luaL_Reg rocklib[] =
 #endif
     R(get_action),
     R(action_userabort),
+#ifdef HAVE_TOUCHSCREEN
+    R(action_get_touchscreen_press),
+#endif
     R(kbd_input),
 
     /* Hardware */

apps/plugins/lua/rocklua.c

@@ -46,23 +46,6 @@ static void rocklua_openlibs(lua_State *L) {
   }
 }
 
-char curpath[MAX_PATH];
-static void fill_curpath(const char* filename)
-{
-    char* pos = rb->strrchr(filename, '/');
-
-    if(pos != NULL)
-    {
-        int len = (int)(pos - filename);
-
-        if(len > 0)
-            memcpy(curpath, filename, len);
-
-        curpath[len] = '\0';
-    }
-}
-
-
 /***************** Plugin Entry Point *****************/
 enum plugin_status plugin_start(const void* parameter)
 {
@@ -79,7 +62,6 @@ enum plugin_status plugin_start(const void* parameter)
     else
     {
         filename = (char*) parameter;
-        fill_curpath(filename);
 
         lua_State *L = luaL_newstate();