initial commit

1 files changed, 217 insertions, 0 deletions

diff --git a/src/freetype/cffcmap.c b/src/freetype/cffcmap.c
new file mode 100644
index 0000000..dbdfe47
--- /dev/null
+++ b/src/freetype/cffcmap.c
@@ -0,0 +1,217 @@
+/***************************************************************************/
+/*                                                                         */
+/*  cffcmap.c                                                              */
+/*                                                                         */
+/*    CFF character mapping table (cmap) support (body).                   */
+/*                                                                         */
+/*  Copyright 2002-2018 by                                                 */
+/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
+/*                                                                         */
+/*  This file is part of the FreeType project, and may only be used,       */
+/*  modified, and distributed under the terms of the FreeType project      */
+/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
+/*  this file you indicate that you have read the license and              */
+/*  understand and accept it fully.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+
+#include "ft2build.h"
+#include FT_INTERNAL_DEBUG_H
+#include "cffcmap.h"
+#include "cffload.h"
+
+#include "cfferrs.h"
+
+
+  /*************************************************************************/
+  /*************************************************************************/
+  /*****                                                               *****/
+  /*****           CFF STANDARD (AND EXPERT) ENCODING CMAPS            *****/
+  /*****                                                               *****/
+  /*************************************************************************/
+  /*************************************************************************/
+
+  FT_CALLBACK_DEF( FT_Error )
+  cff_cmap_encoding_init( CFF_CMapStd  cmap,
+                          FT_Pointer   pointer )
+  {
+    TT_Face       face     = (TT_Face)FT_CMAP_FACE( cmap );
+    CFF_Font      cff      = (CFF_Font)face->extra.data;
+    CFF_Encoding  encoding = &cff->encoding;
+
+    FT_UNUSED( pointer );
+
+
+    cmap->gids  = encoding->codes;
+
+    return 0;
+  }
+
+
+  FT_CALLBACK_DEF( void )
+  cff_cmap_encoding_done( CFF_CMapStd  cmap )
+  {
+    cmap->gids  = NULL;
+  }
+
+
+  FT_CALLBACK_DEF( FT_UInt )
+  cff_cmap_encoding_char_index( CFF_CMapStd  cmap,
+                                FT_UInt32    char_code )
+  {
+    FT_UInt  result = 0;
+
+
+    if ( char_code < 256 )
+      result = cmap->gids[char_code];
+
+    return result;
+  }
+
+
+  FT_CALLBACK_DEF( FT_UInt32 )
+  cff_cmap_encoding_char_next( CFF_CMapStd   cmap,
+                               FT_UInt32    *pchar_code )
+  {
+    FT_UInt    result    = 0;
+    FT_UInt32  char_code = *pchar_code;
+
+
+    *pchar_code = 0;
+
+    if ( char_code < 255 )
+    {
+      FT_UInt  code = (FT_UInt)(char_code + 1);
+
+
+      for (;;)
+      {
+        if ( code >= 256 )
+          break;
+
+        result = cmap->gids[code];
+        if ( result != 0 )
+        {
+          *pchar_code = code;
+          break;
+        }
+
+        code++;
+      }
+    }
+    return result;
+  }
+
+
+  FT_DEFINE_CMAP_CLASS(
+    cff_cmap_encoding_class_rec,
+
+    sizeof ( CFF_CMapStdRec ),
+
+    (FT_CMap_InitFunc)     cff_cmap_encoding_init,        /* init       */
+    (FT_CMap_DoneFunc)     cff_cmap_encoding_done,        /* done       */
+    (FT_CMap_CharIndexFunc)cff_cmap_encoding_char_index,  /* char_index */
+    (FT_CMap_CharNextFunc) cff_cmap_encoding_char_next    /* char_next  */
+  )
+
+
+  /*************************************************************************/
+  /*************************************************************************/
+  /*****                                                               *****/
+  /*****              CFF SYNTHETIC UNICODE ENCODING CMAP              *****/
+  /*****                                                               *****/
+  /*************************************************************************/
+  /*************************************************************************/
+
+  FT_CALLBACK_DEF( const char* )
+  cff_sid_to_glyph_name( TT_Face  face,
+                         FT_UInt  idx )
+  {
+    CFF_Font     cff     = (CFF_Font)face->extra.data;
+    CFF_Charset  charset = &cff->charset;
+    FT_UInt      sid     = charset->sids[idx];
+
+
+    return cff_index_get_sid_string( cff, sid );
+  }
+
+
+  FT_CALLBACK_DEF( FT_Error )
+  cff_cmap_unicode_init( PS_Unicodes  unicodes,
+                         FT_Pointer   pointer )
+  {
+    TT_Face             face    = (TT_Face)FT_CMAP_FACE( unicodes );
+    FT_Memory           memory  = FT_FACE_MEMORY( face );
+    CFF_Font            cff     = (CFF_Font)face->extra.data;
+    CFF_Charset         charset = &cff->charset;
+    FT_Service_PsCMaps  psnames = (FT_Service_PsCMaps)cff->psnames;
+
+    FT_UNUSED( pointer );
+
+
+    /* can't build Unicode map for CID-keyed font */
+    /* because we don't know glyph names.         */
+    if ( !charset->sids )
+      return FT_THROW( No_Unicode_Glyph_Name );
+
+    return psnames->unicodes_init( memory,
+                                   unicodes,
+                                   cff->num_glyphs,
+                                   (PS_GetGlyphNameFunc)&cff_sid_to_glyph_name,
+                                   (PS_FreeGlyphNameFunc)NULL,
+                                   (FT_Pointer)face );
+  }
+
+
+  FT_CALLBACK_DEF( void )
+  cff_cmap_unicode_done( PS_Unicodes  unicodes )
+  {
+    FT_Face    face   = FT_CMAP_FACE( unicodes );
+    FT_Memory  memory = FT_FACE_MEMORY( face );
+
+
+    FT_FREE( unicodes->maps );
+    unicodes->num_maps = 0;
+  }
+
+
+  FT_CALLBACK_DEF( FT_UInt )
+  cff_cmap_unicode_char_index( PS_Unicodes  unicodes,
+                               FT_UInt32    char_code )
+  {
+    TT_Face             face    = (TT_Face)FT_CMAP_FACE( unicodes );
+    CFF_Font            cff     = (CFF_Font)face->extra.data;
+    FT_Service_PsCMaps  psnames = (FT_Service_PsCMaps)cff->psnames;
+
+
+    return psnames->unicodes_char_index( unicodes, char_code );
+  }
+
+
+  FT_CALLBACK_DEF( FT_UInt32 )
+  cff_cmap_unicode_char_next( PS_Unicodes  unicodes,
+                              FT_UInt32   *pchar_code )
+  {
+    TT_Face             face    = (TT_Face)FT_CMAP_FACE( unicodes );
+    CFF_Font            cff     = (CFF_Font)face->extra.data;
+    FT_Service_PsCMaps  psnames = (FT_Service_PsCMaps)cff->psnames;
+
+
+    return psnames->unicodes_char_next( unicodes, pchar_code );
+  }
+
+
+  FT_DEFINE_CMAP_CLASS(
+    cff_cmap_unicode_class_rec,
+
+    sizeof ( PS_UnicodesRec ),
+
+    (FT_CMap_InitFunc)     cff_cmap_unicode_init,        /* init       */
+    (FT_CMap_DoneFunc)     cff_cmap_unicode_done,        /* done       */
+    (FT_CMap_CharIndexFunc)cff_cmap_unicode_char_index,  /* char_index */
+    (FT_CMap_CharNextFunc) cff_cmap_unicode_char_next    /* char_next  */
+  )
+
+
+/* END */