Update freetype sources (2.6.2) in third party.

third_party/freetype2/src/src/cid/cidparse.c

Index: third_party/freetype2/src/src/cid/cidparse.c
diff --git a/third_party/freetype2/src/src/cid/cidparse.c b/third_party/freetype2/src/src/cid/cidparse.c
new file mode 100644
index 0000000000000000000000000000000000000000..c276949779b1c5f676fb83289e1b78c3be6da758
--- /dev/null
+++ b/third_party/freetype2/src/src/cid/cidparse.c
@@ -0,0 +1,234 @@
+/***************************************************************************/
+/*                                                                         */
+/*  cidparse.c                                                             */
+/*                                                                         */
+/*    CID-keyed Type1 parser (body).                                       */
+/*                                                                         */
+/*  Copyright 1996-2015 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 FT_INTERNAL_OBJECTS_H
+#include FT_INTERNAL_STREAM_H
+
+#include "cidparse.h"
+
+#include "ciderrs.h"
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* The macro FT_COMPONENT is used in trace mode.  It is an implicit      */
+  /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log  */
+  /* messages during execution.                                            */
+  /*                                                                       */
+#undef  FT_COMPONENT
+#define FT_COMPONENT  trace_cidparse
+
+
+  /*************************************************************************/
+  /*************************************************************************/
+  /*************************************************************************/
+  /*****                                                               *****/
+  /*****                    INPUT STREAM PARSER                        *****/
+  /*****                                                               *****/
+  /*************************************************************************/
+  /*************************************************************************/
+  /*************************************************************************/
+
+
+  FT_LOCAL_DEF( FT_Error )
+  cid_parser_new( CID_Parser*    parser,
+                  FT_Stream      stream,
+                  FT_Memory      memory,
+                  PSAux_Service  psaux )
+  {
+    FT_Error  error;
+    FT_ULong  base_offset, offset, ps_len;
+    FT_Byte   *cur, *limit;
+    FT_Byte   *arg1, *arg2;
+
+
+    FT_MEM_ZERO( parser, sizeof ( *parser ) );
+    psaux->ps_parser_funcs->init( &parser->root, 0, 0, memory );
+
+    parser->stream = stream;
+
+    base_offset = FT_STREAM_POS();
+
+    /* first of all, check the font format in the header */
+    if ( FT_FRAME_ENTER( 31 ) )
+      goto Exit;
+
+    if ( ft_strncmp( (char *)stream->cursor,
+                     "%!PS-Adobe-3.0 Resource-CIDFont", 31 ) )
+    {
+      FT_TRACE2(( "  not a CID-keyed font\n" ));
+      error = FT_THROW( Unknown_File_Format );
+    }
+
+    FT_FRAME_EXIT();
+    if ( error )
+      goto Exit;
+
+  Again:
+    /* now, read the rest of the file until we find */
+    /* `StartData' or `/sfnts'                      */
+    {
+      FT_Byte   buffer[256 + 10];
+      FT_ULong  read_len = 256 + 10;
+      FT_Byte*  p        = buffer;
+
+
+      for ( offset = FT_STREAM_POS(); ; offset += 256 )
+      {
+        FT_ULong  stream_len;
+
+
+        stream_len = stream->size - FT_STREAM_POS();
+        if ( stream_len == 0 )
+        {
+          FT_TRACE2(( "cid_parser_new: no `StartData' keyword found\n" ));
+          error = FT_THROW( Invalid_File_Format );
+          goto Exit;
+        }
+
+        read_len = FT_MIN( read_len, stream_len );
+        if ( FT_STREAM_READ( p, read_len ) )
+          goto Exit;
+
+        if ( read_len < 256 )
+          p[read_len]  = '\0';
+
+        limit = p + read_len - 10;
+
+        for ( p = buffer; p < limit; p++ )
+        {
+          if ( p[0] == 'S' && ft_strncmp( (char*)p, "StartData", 9 ) == 0 )
+          {
+            /* save offset of binary data after `StartData' */
+            offset += (FT_ULong)( p - buffer + 10 );
+            goto Found;
+          }
+          else if ( p[1] == 's' && ft_strncmp( (char*)p, "/sfnts", 6 ) == 0 )
+          {
+            offset += (FT_ULong)( p - buffer + 7 );
+            goto Found;
+          }
+        }
+
+        FT_MEM_MOVE( buffer, p, 10 );
+        read_len = 256;
+        p = buffer + 10;
+      }
+    }
+
+  Found:
+    /* We have found the start of the binary data or the `/sfnts' token. */
+    /* Now rewind and extract the frame corresponding to this PostScript */
+    /* section.                                                          */
+
+    ps_len = offset - base_offset;
+    if ( FT_STREAM_SEEK( base_offset )                  ||
+         FT_FRAME_EXTRACT( ps_len, parser->postscript ) )
+      goto Exit;
+
+    parser->data_offset    = offset;
+    parser->postscript_len = ps_len;
+    parser->root.base      = parser->postscript;
+    parser->root.cursor    = parser->postscript;
+    parser->root.limit     = parser->root.cursor + ps_len;
+    parser->num_dict       = -1;
+
+    /* Finally, we check whether `StartData' or `/sfnts' was real --  */
+    /* it could be in a comment or string.  We also get the arguments */
+    /* of `StartData' to find out whether the data is represented in  */
+    /* binary or hex format.                                          */
+
+    arg1 = parser->root.cursor;
+    cid_parser_skip_PS_token( parser );
+    cid_parser_skip_spaces  ( parser );
+    arg2 = parser->root.cursor;
+    cid_parser_skip_PS_token( parser );
+    cid_parser_skip_spaces  ( parser );
+
+    limit = parser->root.limit;
+    cur   = parser->root.cursor;
+
+    while ( cur < limit )
+    {
+      if ( parser->root.error )
+      {
+        error = parser->root.error;
+        goto Exit;
+      }
+
+      if ( cur[0] == 'S' && ft_strncmp( (char*)cur, "StartData", 9 ) == 0 )
+      {
+        if ( ft_strncmp( (char*)arg1, "(Hex)", 5 ) == 0 )
+        {
+          FT_Long  tmp = ft_atol( (const char *)arg2 );
+
+
+          if ( tmp < 0 )
+          {
+            FT_ERROR(( "cid_parser_new: invalid length of hex data\n" ));
+            error = FT_THROW( Invalid_File_Format );
+          }
+          else
+            parser->binary_length = (FT_ULong)tmp;
+        }
+
+        goto Exit;
+      }
+      else if ( cur[1] == 's' && ft_strncmp( (char*)cur, "/sfnts", 6 ) == 0 )
+      {
+        FT_TRACE2(( "cid_parser_new: cannot handle Type 11 fonts\n" ));
+        error = FT_THROW( Unknown_File_Format );
+        goto Exit;
+      }
+
+      cid_parser_skip_PS_token( parser );
+      cid_parser_skip_spaces  ( parser );
+      arg1 = arg2;
+      arg2 = cur;
+      cur  = parser->root.cursor;
+    }
+
+    /* we haven't found the correct `StartData'; go back and continue */
+    /* searching                                                      */
+    FT_FRAME_RELEASE( parser->postscript );
+    if ( !FT_STREAM_SEEK( offset ) )
+      goto Again;
+
+  Exit:
+    return error;
+  }
+
+
+  FT_LOCAL_DEF( void )
+  cid_parser_done( CID_Parser*  parser )
+  {
+    /* always free the private dictionary */
+    if ( parser->postscript )
+    {
+      FT_Stream  stream = parser->stream;
+
+
+      FT_FRAME_RELEASE( parser->postscript );
+    }
+    parser->root.funcs.done( &parser->root );
+  }
+
+
+/* END */