Update freetype sources (2.6.2) in third party.

third_party/freetype2/src/src/base/ftsystem.c

Index: third_party/freetype2/src/src/base/ftsystem.c
diff --git a/third_party/freetype2/src/src/base/ftsystem.c b/third_party/freetype2/src/src/base/ftsystem.c
new file mode 100644
index 0000000000000000000000000000000000000000..1938fd8917c2e46f9a3d0b74d1b85a15760099e9
--- /dev/null
+++ b/third_party/freetype2/src/src/base/ftsystem.c
@@ -0,0 +1,320 @@
+/***************************************************************************/
+/*                                                                         */
+/*  ftsystem.c                                                             */
+/*                                                                         */
+/*    ANSI-specific FreeType low-level system interface (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.                                        */
+/*                                                                         */
+/***************************************************************************/
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* This file contains the default interface used by FreeType to access   */
+  /* low-level, i.e. memory management, i/o access as well as thread       */
+  /* synchronisation.  It can be replaced by user-specific routines if     */
+  /* necessary.                                                            */
+  /*                                                                       */
+  /*************************************************************************/
+
+
+#include <ft2build.h>
+#include FT_CONFIG_CONFIG_H
+#include FT_INTERNAL_DEBUG_H
+#include FT_INTERNAL_STREAM_H
+#include FT_SYSTEM_H
+#include FT_ERRORS_H
+#include FT_TYPES_H
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /*                       MEMORY MANAGEMENT INTERFACE                     */
+  /*                                                                       */
+  /*************************************************************************/
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* It is not necessary to do any error checking for the                  */
+  /* allocation-related functions.  This will be done by the higher level  */
+  /* routines like ft_mem_alloc() or ft_mem_realloc().                     */
+  /*                                                                       */
+  /*************************************************************************/
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* <Function>                                                            */
+  /*    ft_alloc                                                           */
+  /*                                                                       */
+  /* <Description>                                                         */
+  /*    The memory allocation function.                                    */
+  /*                                                                       */
+  /* <Input>                                                               */
+  /*    memory :: A pointer to the memory object.                          */
+  /*                                                                       */
+  /*    size   :: The requested size in bytes.                             */
+  /*                                                                       */
+  /* <Return>                                                              */
+  /*    The address of newly allocated block.                              */
+  /*                                                                       */
+  FT_CALLBACK_DEF( void* )
+  ft_alloc( FT_Memory  memory,
+            long       size )
+  {
+    FT_UNUSED( memory );
+
+    return ft_smalloc( (size_t)size );
+  }
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* <Function>                                                            */
+  /*    ft_realloc                                                         */
+  /*                                                                       */
+  /* <Description>                                                         */
+  /*    The memory reallocation function.                                  */
+  /*                                                                       */
+  /* <Input>                                                               */
+  /*    memory   :: A pointer to the memory object.                        */
+  /*                                                                       */
+  /*    cur_size :: The current size of the allocated memory block.        */
+  /*                                                                       */
+  /*    new_size :: The newly requested size in bytes.                     */
+  /*                                                                       */
+  /*    block    :: The current address of the block in memory.            */
+  /*                                                                       */
+  /* <Return>                                                              */
+  /*    The address of the reallocated memory block.                       */
+  /*                                                                       */
+  FT_CALLBACK_DEF( void* )
+  ft_realloc( FT_Memory  memory,
+              long       cur_size,
+              long       new_size,
+              void*      block )
+  {
+    FT_UNUSED( memory );
+    FT_UNUSED( cur_size );
+
+    return ft_srealloc( block, (size_t)new_size );
+  }
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* <Function>                                                            */
+  /*    ft_free                                                            */
+  /*                                                                       */
+  /* <Description>                                                         */
+  /*    The memory release function.                                       */
+  /*                                                                       */
+  /* <Input>                                                               */
+  /*    memory  :: A pointer to the memory object.                         */
+  /*                                                                       */
+  /*    block   :: The address of block in memory to be freed.             */
+  /*                                                                       */
+  FT_CALLBACK_DEF( void )
+  ft_free( FT_Memory  memory,
+           void*      block )
+  {
+    FT_UNUSED( memory );
+
+    ft_sfree( block );
+  }
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /*                     RESOURCE MANAGEMENT INTERFACE                     */
+  /*                                                                       */
+  /*************************************************************************/
+
+#ifndef FT_CONFIG_OPTION_DISABLE_STREAM_SUPPORT
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* 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_io
+
+  /* We use the macro STREAM_FILE for convenience to extract the       */
+  /* system-specific stream handle from a given FreeType stream object */
+#define STREAM_FILE( stream )  ( (FT_FILE*)stream->descriptor.pointer )
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* <Function>                                                            */
+  /*    ft_ansi_stream_close                                               */
+  /*                                                                       */
+  /* <Description>                                                         */
+  /*    The function to close a stream.                                    */
+  /*                                                                       */
+  /* <Input>                                                               */
+  /*    stream :: A pointer to the stream object.                          */
+  /*                                                                       */
+  FT_CALLBACK_DEF( void )
+  ft_ansi_stream_close( FT_Stream  stream )
+  {
+    ft_fclose( STREAM_FILE( stream ) );
+
+    stream->descriptor.pointer = NULL;
+    stream->size               = 0;
+    stream->base               = NULL;
+  }
+
+
+  /*************************************************************************/
+  /*                                                                       */
+  /* <Function>                                                            */
+  /*    ft_ansi_stream_io                                                  */
+  /*                                                                       */
+  /* <Description>                                                         */
+  /*    The function to open a stream.                                     */
+  /*                                                                       */
+  /* <Input>                                                               */
+  /*    stream :: A pointer to the stream object.                          */
+  /*                                                                       */
+  /*    offset :: The position in the data stream to start reading.        */
+  /*                                                                       */
+  /*    buffer :: The address of buffer to store the read data.            */
+  /*                                                                       */
+  /*    count  :: The number of bytes to read from the stream.             */
+  /*                                                                       */
+  /* <Return>                                                              */
+  /*    The number of bytes actually read.  If `count' is zero (this is,   */
+  /*    the function is used for seeking), a non-zero return value         */
+  /*    indicates an error.                                                */
+  /*                                                                       */
+  FT_CALLBACK_DEF( unsigned long )
+  ft_ansi_stream_io( FT_Stream       stream,
+                     unsigned long   offset,
+                     unsigned char*  buffer,
+                     unsigned long   count )
+  {
+    FT_FILE*  file;
+
+
+    if ( !count && offset > stream->size )
+      return 1;
+
+    file = STREAM_FILE( stream );
+
+    if ( stream->pos != offset )
+      ft_fseek( file, (long)offset, SEEK_SET );
+
+    return (unsigned long)ft_fread( buffer, 1, count, file );
+  }
+
+
+  /* documentation is in ftstream.h */
+
+  FT_BASE_DEF( FT_Error )
+  FT_Stream_Open( FT_Stream    stream,
+                  const char*  filepathname )
+  {
+    FT_FILE*  file;
+
+
+    if ( !stream )
+      return FT_THROW( Invalid_Stream_Handle );
+
+    stream->descriptor.pointer = NULL;
+    stream->pathname.pointer   = (char*)filepathname;
+    stream->base               = NULL;
+    stream->pos                = 0;
+    stream->read               = NULL;
+    stream->close              = NULL;
+
+    file = ft_fopen( filepathname, "rb" );
+    if ( !file )
+    {
+      FT_ERROR(( "FT_Stream_Open:"
+                 " could not open `%s'\n", filepathname ));
+
+      return FT_THROW( Cannot_Open_Resource );
+    }
+
+    ft_fseek( file, 0, SEEK_END );
+    stream->size = (unsigned long)ft_ftell( file );
+    if ( !stream->size )
+    {
+      FT_ERROR(( "FT_Stream_Open:" ));
+      FT_ERROR(( " opened `%s' but zero-sized\n", filepathname ));
+      ft_fclose( file );
+      return FT_THROW( Cannot_Open_Stream );
+    }
+    ft_fseek( file, 0, SEEK_SET );
+
+    stream->descriptor.pointer = file;
+    stream->read  = ft_ansi_stream_io;
+    stream->close = ft_ansi_stream_close;
+
+    FT_TRACE1(( "FT_Stream_Open:" ));
+    FT_TRACE1(( " opened `%s' (%d bytes) successfully\n",
+                filepathname, stream->size ));
+
+    return FT_Err_Ok;
+  }
+
+#endif /* !FT_CONFIG_OPTION_DISABLE_STREAM_SUPPORT */
+
+#ifdef FT_DEBUG_MEMORY
+
+  extern FT_Int
+  ft_mem_debug_init( FT_Memory  memory );
+
+  extern void
+  ft_mem_debug_done( FT_Memory  memory );
+
+#endif
+
+
+  /* documentation is in ftobjs.h */
+
+  FT_BASE_DEF( FT_Memory )
+  FT_New_Memory( void )
+  {
+    FT_Memory  memory;
+
+
+    memory = (FT_Memory)ft_smalloc( sizeof ( *memory ) );
+    if ( memory )
+    {
+      memory->user    = NULL;
+      memory->alloc   = ft_alloc;
+      memory->realloc = ft_realloc;
+      memory->free    = ft_free;
+#ifdef FT_DEBUG_MEMORY
+      ft_mem_debug_init( memory );
+#endif
+    }
+
+    return memory;
+  }
+
+
+  /* documentation is in ftobjs.h */
+
+  FT_BASE_DEF( void )
+  FT_Done_Memory( FT_Memory  memory )
+  {
+#ifdef FT_DEBUG_MEMORY
+    ft_mem_debug_done( memory );
+#endif
+    ft_sfree( memory );
+  }
+
+
+/* END */