Update freetype to latest version of ASOP.

src/autofit/afglobal.c

Index: src/autofit/afglobal.c
diff --git a/src/autofit/afglobal.c b/src/autofit/afglobal.c
index 3e0c02d3f1490594f96f2cd510e3312116d1044a..3e41465756b7d2003b1e342972436915643c0aaa 100644
--- a/src/autofit/afglobal.c
+++ b/src/autofit/afglobal.c
@@ -4,7 +4,7 @@
 /*                                                                         */
 /*    Auto-fitter routines to compute global hinting values (body).        */
 /*                                                                         */
-/*  Copyright 2003-2011 by                                                 */
+/*  Copyright 2003-2013 by                                                 */
 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
 /*                                                                         */
 /*  This file is part of the FreeType project, and may only be used,       */
@@ -49,55 +49,33 @@
 
 #endif /* !FT_CONFIG_OPTION_PIC */
 
-  /* index of default script in `af_script_classes' */
-#define AF_SCRIPT_LIST_DEFAULT  2
-  /* a bit mask indicating an uncovered glyph       */
-#define AF_SCRIPT_LIST_NONE     0x7F
-  /* if this flag is set, we have an ASCII digit    */
-#define AF_DIGIT                0x80
-
-
-  /*
-   *  Note that glyph_scripts[] is used to map each glyph into
-   *  an index into the `af_script_classes' array.
-   *
-   */
-  typedef struct  AF_FaceGlobalsRec_
-  {
-    FT_Face           face;
-    FT_Long           glyph_count;    /* same as face->num_glyphs */
-    FT_Byte*          glyph_scripts;
-
-    AF_ScriptMetrics  metrics[AF_SCRIPT_MAX];
-
-  } AF_FaceGlobalsRec;
-
 
   /* Compute the script index of each glyph within a given face. */
 
   static FT_Error
   af_face_globals_compute_script_coverage( AF_FaceGlobals  globals )
   {
-    FT_Error    error       = AF_Err_Ok;
+    FT_Error    error;
     FT_Face     face        = globals->face;
     FT_CharMap  old_charmap = face->charmap;
     FT_Byte*    gscripts    = globals->glyph_scripts;
-    FT_UInt     ss, i;
+    FT_UInt     ss;
+    FT_UInt     i;
 
 
-    /* the value AF_SCRIPT_LIST_NONE means `uncovered glyph' */
+    /* the value AF_SCRIPT_NONE means `uncovered glyph' */
     FT_MEM_SET( globals->glyph_scripts,
-                AF_SCRIPT_LIST_NONE,
+                AF_SCRIPT_NONE,
                 globals->glyph_count );
 
     error = FT_Select_Charmap( face, FT_ENCODING_UNICODE );
     if ( error )
     {
      /*
-      *  Ignore this error; we simply use the default script.
+      *  Ignore this error; we simply use the fallback script.
       *  XXX: Shouldn't we rather disable hinting?
       */
-      error = AF_Err_Ok;
+      error = FT_Err_Ok;
       goto Exit;
     }
 
@@ -112,7 +90,7 @@
         continue;
 
       /*
-       *  Scan all unicode points in the range and set the corresponding
+       *  Scan all Unicode points in the range and set the corresponding
        *  glyph script index.
        */
       for ( range = clazz->script_uni_ranges; range->first != 0; range++ )
@@ -125,7 +103,7 @@
 
         if ( gindex != 0                             &&
              gindex < (FT_ULong)globals->glyph_count &&
-             gscripts[gindex] == AF_SCRIPT_LIST_NONE )
+             gscripts[gindex] == AF_SCRIPT_NONE )
           gscripts[gindex] = (FT_Byte)ss;
 
         for (;;)
@@ -136,7 +114,7 @@
             break;
 
           if ( gindex < (FT_ULong)globals->glyph_count &&
-               gscripts[gindex] == AF_SCRIPT_LIST_NONE )
+               gscripts[gindex] == AF_SCRIPT_NONE )
             gscripts[gindex] = (FT_Byte)ss;
         }
       }
@@ -154,19 +132,20 @@
 
   Exit:
     /*
-     *  By default, all uncovered glyphs are set to the latin script.
+     *  By default, all uncovered glyphs are set to the fallback script.
      *  XXX: Shouldn't we disable hinting or do something similar?
      */
+    if ( globals->module->fallback_script != AF_SCRIPT_NONE )
     {
       FT_Long  nn;
 
 
       for ( nn = 0; nn < globals->glyph_count; nn++ )
       {
-        if ( ( gscripts[nn] & ~AF_DIGIT ) == AF_SCRIPT_LIST_NONE )
+        if ( ( gscripts[nn] & ~AF_DIGIT ) == AF_SCRIPT_NONE )
         {
-          gscripts[nn] &= ~AF_SCRIPT_LIST_NONE;
-          gscripts[nn] |= AF_SCRIPT_LIST_DEFAULT;
+          gscripts[nn] &= ~AF_SCRIPT_NONE;
+          gscripts[nn] |= globals->module->fallback_script;
         }
       }
     }
@@ -178,7 +157,8 @@
 
   FT_LOCAL_DEF( FT_Error )
   af_face_globals_new( FT_Face          face,
-                       AF_FaceGlobals  *aglobals )
+                       AF_FaceGlobals  *aglobals,
+                       AF_Module        module )
   {
     FT_Error        error;
     FT_Memory       memory;
@@ -187,21 +167,25 @@
 
     memory = face->memory;
 
-    if ( !FT_ALLOC( globals, sizeof ( *globals ) +
-                             face->num_glyphs * sizeof ( FT_Byte ) ) )
-    {
-      globals->face          = face;
-      globals->glyph_count   = face->num_glyphs;
-      globals->glyph_scripts = (FT_Byte*)( globals + 1 );
+    if ( FT_ALLOC( globals, sizeof ( *globals ) +
+                            face->num_glyphs * sizeof ( FT_Byte ) ) )
+      goto Exit;
 
-      error = af_face_globals_compute_script_coverage( globals );
-      if ( error )
-      {
-        af_face_globals_free( globals );
-        globals = NULL;
-      }
+    globals->face          = face;
+    globals->glyph_count   = face->num_glyphs;
+    globals->glyph_scripts = (FT_Byte*)( globals + 1 );
+    globals->module        = module;
+
+    error = af_face_globals_compute_script_coverage( globals );
+    if ( error )
+    {
+      af_face_globals_free( globals );
+      globals = NULL;
     }
 
+    globals->increase_x_height = AF_PROP_INCREASE_X_HEIGHT_MAX;
+
+  Exit:
     *aglobals = globals;
     return error;
   }
@@ -253,18 +237,18 @@
     FT_UInt           script     = options & 15;
     const FT_Offset   script_max = sizeof ( AF_SCRIPT_CLASSES_GET ) /
                                      sizeof ( AF_SCRIPT_CLASSES_GET[0] );
-    FT_Error          error      = AF_Err_Ok;
+    FT_Error          error      = FT_Err_Ok;
 
 
     if ( gindex >= (FT_ULong)globals->glyph_count )
     {
-      error = AF_Err_Invalid_Argument;
+      error = FT_THROW( Invalid_Argument );
       goto Exit;
     }
 
     gidx = script;
     if ( gidx == 0 || gidx + 1 >= script_max )
-      gidx = globals->glyph_scripts[gindex] & AF_SCRIPT_LIST_NONE;
+      gidx = globals->glyph_scripts[gindex] & AF_SCRIPT_NONE;
 
     clazz = AF_SCRIPT_CLASSES_GET[gidx];
     if ( script == 0 )
@@ -273,14 +257,15 @@
     metrics = globals->metrics[clazz->script];
     if ( metrics == NULL )
     {
-      /* create the global metrics object when needed */
+      /* create the global metrics object if necessary */
       FT_Memory  memory = globals->face->memory;
 
 
       if ( FT_ALLOC( metrics, clazz->script_metrics_size ) )
         goto Exit;
 
-      metrics->clazz = clazz;
+      metrics->clazz   = clazz;
+      metrics->globals = globals;
 
       if ( clazz->script_metrics_init )
       {