2018-06-03 09:01:17 +02:00
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/****************************************************************************
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*
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* ftsystem.c
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*
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* ANSI-specific FreeType low-level system interface (body).
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*
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2020-01-19 17:05:19 +01:00
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* Copyright (C) 1996-2020 by
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2018-06-03 09:01:17 +02:00
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* David Turner, Robert Wilhelm, and Werner Lemberg.
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*
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* This file is part of the FreeType project, and may only be used,
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* modified, and distributed under the terms of the FreeType project
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* license, LICENSE.TXT. By continuing to use, modify, or distribute
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* this file you indicate that you have read the license and
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* understand and accept it fully.
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*
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*/
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/**************************************************************************
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*
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* This file contains the default interface used by FreeType to access
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* low-level, i.e. memory management, i/o access as well as thread
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* synchronisation. It can be replaced by user-specific routines if
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* necessary.
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*
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*/
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2000-06-02 16:30:38 +02:00
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2000-12-08 17:17:16 +01:00
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#include <ft2build.h>
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#include FT_CONFIG_CONFIG_H
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2020-06-08 13:31:55 +02:00
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#include <freetype/internal/ftdebug.h>
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#include <freetype/internal/ftstream.h>
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#include <freetype/ftsystem.h>
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#include <freetype/fterrors.h>
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#include <freetype/fttypes.h>
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2000-02-29 18:11:53 +01:00
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2018-06-03 09:01:17 +02:00
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/**************************************************************************
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*
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* MEMORY MANAGEMENT INTERFACE
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*
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*/
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/**************************************************************************
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*
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* It is not necessary to do any error checking for the
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* allocation-related functions. This will be done by the higher level
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* routines like ft_mem_alloc() or ft_mem_realloc().
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*
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*/
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/**************************************************************************
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*
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* @Function:
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* ft_alloc
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*
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* @Description:
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* The memory allocation function.
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*
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* @Input:
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* memory ::
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* A pointer to the memory object.
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*
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* size ::
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* The requested size in bytes.
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*
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* @Return:
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* The address of newly allocated block.
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*/
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2001-06-27 18:18:10 +02:00
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FT_CALLBACK_DEF( void* )
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2001-06-27 11:26:46 +02:00
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ft_alloc( FT_Memory memory,
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2018-10-27 04:52:25 +02:00
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long size )
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2000-02-29 18:11:53 +01:00
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{
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2000-07-04 20:12:13 +02:00
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FT_UNUSED( memory );
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2000-02-29 18:11:53 +01:00
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2018-10-27 04:52:25 +02:00
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return ft_smalloc( (size_t)size );
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2000-06-02 16:30:38 +02:00
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}
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2000-02-29 18:11:53 +01:00
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2018-06-03 09:01:17 +02:00
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/**************************************************************************
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*
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* @Function:
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* ft_realloc
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*
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* @Description:
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* The memory reallocation function.
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*
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* @Input:
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* memory ::
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* A pointer to the memory object.
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*
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* cur_size ::
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* The current size of the allocated memory block.
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*
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* new_size ::
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* The newly requested size in bytes.
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*
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* block ::
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* The current address of the block in memory.
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*
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* @Return:
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* The address of the reallocated memory block.
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*/
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2001-06-27 18:18:10 +02:00
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FT_CALLBACK_DEF( void* )
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2001-06-27 11:26:46 +02:00
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ft_realloc( FT_Memory memory,
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2018-10-27 04:52:25 +02:00
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long cur_size,
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long new_size,
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2001-06-27 11:26:46 +02:00
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void* block )
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2000-02-29 18:11:53 +01:00
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{
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2000-07-04 20:12:13 +02:00
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FT_UNUSED( memory );
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FT_UNUSED( cur_size );
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2000-02-29 18:11:53 +01:00
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2018-10-27 04:52:25 +02:00
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return ft_srealloc( block, (size_t)new_size );
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2000-02-29 18:11:53 +01:00
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}
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2018-06-03 09:01:17 +02:00
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/**************************************************************************
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*
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* @Function:
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* ft_free
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*
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* @Description:
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* The memory release function.
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*
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* @Input:
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* memory ::
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* A pointer to the memory object.
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*
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* block ::
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* The address of block in memory to be freed.
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*/
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2001-06-27 18:18:10 +02:00
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FT_CALLBACK_DEF( void )
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2001-06-27 11:26:46 +02:00
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ft_free( FT_Memory memory,
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void* block )
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2000-02-29 18:11:53 +01:00
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{
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2000-07-04 20:12:13 +02:00
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FT_UNUSED( memory );
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2000-06-02 16:30:38 +02:00
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Further C library abstraction. Based on a patch from
msn2@bidyut.com.
* include/freetype/config/ftstdlib.h (FT_CHAR_BIT, FT_FILE,
ft_fopen, ft_fclose, ft_fseek, ft_ftell, ft_fread, ft_smalloc,
ft_scalloc, ft_srealloc, ft_sfree, ft_labs): New wrapper macros for
C library functions. Update all users accordingly (and catch some
other places where the C library function was used instead of the
wrapper functions).
* src/base/ftsystem.c: Don't include stdio.h and stdlib.h.
* src/gzip/zutil.h [MSDOS && !(__TURBOC__ || __BORLANDC__)]: Don't
include malloc.h.
2006-04-29 09:31:16 +02:00
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ft_sfree( block );
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2000-02-29 18:11:53 +01:00
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}
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2018-06-03 09:01:17 +02:00
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/**************************************************************************
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*
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* RESOURCE MANAGEMENT INTERFACE
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*
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*/
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2000-02-29 18:11:53 +01:00
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2011-07-20 06:48:08 +02:00
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#ifndef FT_CONFIG_OPTION_DISABLE_STREAM_SUPPORT
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2000-02-29 18:11:53 +01:00
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2018-06-03 09:01:17 +02:00
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/**************************************************************************
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*
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* The macro FT_COMPONENT is used in trace mode. It is an implicit
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* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log
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* messages during execution.
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*/
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2000-06-02 23:31:32 +02:00
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#undef FT_COMPONENT
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2018-08-15 18:13:17 +02:00
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#define FT_COMPONENT io
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2000-06-02 23:31:32 +02:00
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/* We use the macro STREAM_FILE for convenience to extract the */
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/* system-specific stream handle from a given FreeType stream object */
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Further C library abstraction. Based on a patch from
msn2@bidyut.com.
* include/freetype/config/ftstdlib.h (FT_CHAR_BIT, FT_FILE,
ft_fopen, ft_fclose, ft_fseek, ft_ftell, ft_fread, ft_smalloc,
ft_scalloc, ft_srealloc, ft_sfree, ft_labs): New wrapper macros for
C library functions. Update all users accordingly (and catch some
other places where the C library function was used instead of the
wrapper functions).
* src/base/ftsystem.c: Don't include stdio.h and stdlib.h.
* src/gzip/zutil.h [MSDOS && !(__TURBOC__ || __BORLANDC__)]: Don't
include malloc.h.
2006-04-29 09:31:16 +02:00
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#define STREAM_FILE( stream ) ( (FT_FILE*)stream->descriptor.pointer )
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2000-06-02 16:30:38 +02:00
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2018-06-03 09:01:17 +02:00
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/**************************************************************************
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*
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* @Function:
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* ft_ansi_stream_close
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*
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* @Description:
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* The function to close a stream.
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*
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* @Input:
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* stream ::
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* A pointer to the stream object.
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*/
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2001-06-27 18:18:10 +02:00
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FT_CALLBACK_DEF( void )
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2002-02-24 06:26:57 +01:00
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ft_ansi_stream_close( FT_Stream stream )
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2000-02-29 18:11:53 +01:00
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{
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Further C library abstraction. Based on a patch from
msn2@bidyut.com.
* include/freetype/config/ftstdlib.h (FT_CHAR_BIT, FT_FILE,
ft_fopen, ft_fclose, ft_fseek, ft_ftell, ft_fread, ft_smalloc,
ft_scalloc, ft_srealloc, ft_sfree, ft_labs): New wrapper macros for
C library functions. Update all users accordingly (and catch some
other places where the C library function was used instead of the
wrapper functions).
* src/base/ftsystem.c: Don't include stdio.h and stdlib.h.
* src/gzip/zutil.h [MSDOS && !(__TURBOC__ || __BORLANDC__)]: Don't
include malloc.h.
2006-04-29 09:31:16 +02:00
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ft_fclose( STREAM_FILE( stream ) );
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2000-06-02 23:31:32 +02:00
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stream->descriptor.pointer = NULL;
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stream->size = 0;
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2015-04-11 05:45:11 +02:00
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stream->base = NULL;
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2000-02-29 18:11:53 +01:00
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}
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2000-06-02 16:30:38 +02:00
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2018-06-03 09:01:17 +02:00
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/**************************************************************************
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*
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* @Function:
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* ft_ansi_stream_io
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*
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* @Description:
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* The function to open a stream.
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*
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* @Input:
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* stream ::
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* A pointer to the stream object.
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*
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* offset ::
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* The position in the data stream to start reading.
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*
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* buffer ::
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* The address of buffer to store the read data.
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*
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* count ::
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* The number of bytes to read from the stream.
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*
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* @Return:
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* The number of bytes actually read. If `count' is zero (this is,
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* the function is used for seeking), a non-zero return value
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* indicates an error.
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*/
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2001-06-27 18:18:10 +02:00
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FT_CALLBACK_DEF( unsigned long )
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2002-02-24 06:26:57 +01:00
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ft_ansi_stream_io( FT_Stream stream,
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unsigned long offset,
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unsigned char* buffer,
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unsigned long count )
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2000-02-29 18:11:53 +01:00
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{
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Further C library abstraction. Based on a patch from
msn2@bidyut.com.
* include/freetype/config/ftstdlib.h (FT_CHAR_BIT, FT_FILE,
ft_fopen, ft_fclose, ft_fseek, ft_ftell, ft_fread, ft_smalloc,
ft_scalloc, ft_srealloc, ft_sfree, ft_labs): New wrapper macros for
C library functions. Update all users accordingly (and catch some
other places where the C library function was used instead of the
wrapper functions).
* src/base/ftsystem.c: Don't include stdio.h and stdlib.h.
* src/gzip/zutil.h [MSDOS && !(__TURBOC__ || __BORLANDC__)]: Don't
include malloc.h.
2006-04-29 09:31:16 +02:00
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FT_FILE* file;
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2000-05-17 01:44:38 +02:00
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2000-06-02 16:30:38 +02:00
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2010-06-26 09:24:08 +02:00
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if ( !count && offset > stream->size )
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return 1;
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2000-06-02 16:30:38 +02:00
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file = STREAM_FILE( stream );
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2000-02-29 18:11:53 +01:00
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2009-08-03 19:55:58 +02:00
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if ( stream->pos != offset )
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2015-02-16 08:37:09 +01:00
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ft_fseek( file, (long)offset, SEEK_SET );
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2000-06-02 16:30:38 +02:00
|
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|
Further C library abstraction. Based on a patch from
msn2@bidyut.com.
* include/freetype/config/ftstdlib.h (FT_CHAR_BIT, FT_FILE,
ft_fopen, ft_fclose, ft_fseek, ft_ftell, ft_fread, ft_smalloc,
ft_scalloc, ft_srealloc, ft_sfree, ft_labs): New wrapper macros for
C library functions. Update all users accordingly (and catch some
other places where the C library function was used instead of the
wrapper functions).
* src/base/ftsystem.c: Don't include stdio.h and stdlib.h.
* src/gzip/zutil.h [MSDOS && !(__TURBOC__ || __BORLANDC__)]: Don't
include malloc.h.
2006-04-29 09:31:16 +02:00
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return (unsigned long)ft_fread( buffer, 1, count, file );
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2000-02-29 18:11:53 +01:00
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}
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* builds/unix/ftsystem.c, include/freetype/config/ftheader.h,
include/freetype/internal/services/svotval.h,
include/freetype/internal/services/svpfr.h,
src/base/ftsystem.c, src/bdf/bdfdrivr.c, src/cache/ftcbasic.c,
src/cff/cffcmap.c, src/gzip/ftgzip.c, src/lzw/ftlzw.c,
src/lzw/ftlzw2.c, src/psaux/t1cmap.c, src/sfnt/ttbdf.c,
src/smooth/ftgrays.c:
solved -Wmissing-prototypes warnings with GCC
2006-02-25 15:53:02 +01:00
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/* documentation is in ftstream.h */
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2000-11-07 18:21:11 +01:00
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* src/base/ftcalc.c (FT_MulTo64): Commented out.
* include/freetype/internal/ftcalc.h (FT_SqrtFixed), src/base/ftcalc.c
(FT_SqrtFixed), include/freetype/internal/ftdebug.h
(FT_Trace_Get_Count, FT_Trace_Get_Name, FT_Message, FT_Panic),
src/base/ftdebug.c (FT_Trace_Get_Count, FT_Trace_Get_Name, FT_Message,
FT_Panic), include/freetype/internal/ftobjs.h (FT_New_Memory,
FT_Done_Memory), include/freetype/internal/ftstream.h
(FT_Stream_Open), src/base/ftsystem.c (FT_New_Memory, FT_Done_Memory,
FT_Stream_Open): s/FT_EXPORT/FT_BASE/.
* builds/exports.mk: Manually add TT_New_Context to EXPORTS_LIST too.
2005-11-17 02:53:07 +01:00
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FT_BASE_DEF( FT_Error )
|
2002-02-24 06:26:57 +01:00
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FT_Stream_Open( FT_Stream stream,
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const char* filepathname )
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2000-02-29 18:11:53 +01:00
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{
|
Further C library abstraction. Based on a patch from
msn2@bidyut.com.
* include/freetype/config/ftstdlib.h (FT_CHAR_BIT, FT_FILE,
ft_fopen, ft_fclose, ft_fseek, ft_ftell, ft_fread, ft_smalloc,
ft_scalloc, ft_srealloc, ft_sfree, ft_labs): New wrapper macros for
C library functions. Update all users accordingly (and catch some
other places where the C library function was used instead of the
wrapper functions).
* src/base/ftsystem.c: Don't include stdio.h and stdlib.h.
* src/gzip/zutil.h [MSDOS && !(__TURBOC__ || __BORLANDC__)]: Don't
include malloc.h.
2006-04-29 09:31:16 +02:00
|
|
|
FT_FILE* file;
|
2000-05-17 01:44:38 +02:00
|
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|
2000-06-02 16:30:38 +02:00
|
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2002-02-24 06:26:57 +01:00
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if ( !stream )
|
2013-03-14 10:27:35 +01:00
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return FT_THROW( Invalid_Stream_Handle );
|
2000-06-29 05:14:25 +02:00
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|
2010-10-13 09:21:59 +02:00
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stream->descriptor.pointer = NULL;
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stream->pathname.pointer = (char*)filepathname;
|
2015-04-11 05:45:11 +02:00
|
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stream->base = NULL;
|
2010-10-13 09:21:59 +02:00
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stream->pos = 0;
|
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stream->read = NULL;
|
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stream->close = NULL;
|
|
|
|
|
Further C library abstraction. Based on a patch from
msn2@bidyut.com.
* include/freetype/config/ftstdlib.h (FT_CHAR_BIT, FT_FILE,
ft_fopen, ft_fclose, ft_fseek, ft_ftell, ft_fread, ft_smalloc,
ft_scalloc, ft_srealloc, ft_sfree, ft_labs): New wrapper macros for
C library functions. Update all users accordingly (and catch some
other places where the C library function was used instead of the
wrapper functions).
* src/base/ftsystem.c: Don't include stdio.h and stdlib.h.
* src/gzip/zutil.h [MSDOS && !(__TURBOC__ || __BORLANDC__)]: Don't
include malloc.h.
2006-04-29 09:31:16 +02:00
|
|
|
file = ft_fopen( filepathname, "rb" );
|
2000-06-02 16:30:38 +02:00
|
|
|
if ( !file )
|
2000-06-02 23:31:32 +02:00
|
|
|
{
|
2009-06-26 06:15:41 +02:00
|
|
|
FT_ERROR(( "FT_Stream_Open:"
|
|
|
|
" could not open `%s'\n", filepathname ));
|
2000-06-02 23:31:32 +02:00
|
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|
|
2013-03-14 10:27:35 +01:00
|
|
|
return FT_THROW( Cannot_Open_Resource );
|
2000-06-02 23:31:32 +02:00
|
|
|
}
|
2000-05-17 01:44:38 +02:00
|
|
|
|
Further C library abstraction. Based on a patch from
msn2@bidyut.com.
* include/freetype/config/ftstdlib.h (FT_CHAR_BIT, FT_FILE,
ft_fopen, ft_fclose, ft_fseek, ft_ftell, ft_fread, ft_smalloc,
ft_scalloc, ft_srealloc, ft_sfree, ft_labs): New wrapper macros for
C library functions. Update all users accordingly (and catch some
other places where the C library function was used instead of the
wrapper functions).
* src/base/ftsystem.c: Don't include stdio.h and stdlib.h.
* src/gzip/zutil.h [MSDOS && !(__TURBOC__ || __BORLANDC__)]: Don't
include malloc.h.
2006-04-29 09:31:16 +02:00
|
|
|
ft_fseek( file, 0, SEEK_END );
|
2015-02-16 08:37:09 +01:00
|
|
|
stream->size = (unsigned long)ft_ftell( file );
|
2010-10-13 09:21:59 +02:00
|
|
|
if ( !stream->size )
|
|
|
|
{
|
|
|
|
FT_ERROR(( "FT_Stream_Open:" ));
|
|
|
|
FT_ERROR(( " opened `%s' but zero-sized\n", filepathname ));
|
|
|
|
ft_fclose( file );
|
2013-03-14 10:27:35 +01:00
|
|
|
return FT_THROW( Cannot_Open_Stream );
|
2010-10-13 09:21:59 +02:00
|
|
|
}
|
Further C library abstraction. Based on a patch from
msn2@bidyut.com.
* include/freetype/config/ftstdlib.h (FT_CHAR_BIT, FT_FILE,
ft_fopen, ft_fclose, ft_fseek, ft_ftell, ft_fread, ft_smalloc,
ft_scalloc, ft_srealloc, ft_sfree, ft_labs): New wrapper macros for
C library functions. Update all users accordingly (and catch some
other places where the C library function was used instead of the
wrapper functions).
* src/base/ftsystem.c: Don't include stdio.h and stdlib.h.
* src/gzip/zutil.h [MSDOS && !(__TURBOC__ || __BORLANDC__)]: Don't
include malloc.h.
2006-04-29 09:31:16 +02:00
|
|
|
ft_fseek( file, 0, SEEK_SET );
|
2000-05-17 01:44:38 +02:00
|
|
|
|
2002-02-24 06:26:57 +01:00
|
|
|
stream->descriptor.pointer = file;
|
|
|
|
stream->read = ft_ansi_stream_io;
|
|
|
|
stream->close = ft_ansi_stream_close;
|
2000-02-29 18:11:53 +01:00
|
|
|
|
2002-02-24 06:26:57 +01:00
|
|
|
FT_TRACE1(( "FT_Stream_Open:" ));
|
2000-06-02 23:31:32 +02:00
|
|
|
FT_TRACE1(( " opened `%s' (%d bytes) successfully\n",
|
2002-02-24 06:26:57 +01:00
|
|
|
filepathname, stream->size ));
|
2000-06-02 23:31:32 +02:00
|
|
|
|
2000-06-02 16:30:38 +02:00
|
|
|
return FT_Err_Ok;
|
2000-02-29 18:11:53 +01:00
|
|
|
}
|
|
|
|
|
2011-07-20 06:48:08 +02:00
|
|
|
#endif /* !FT_CONFIG_OPTION_DISABLE_STREAM_SUPPORT */
|
2000-02-29 18:11:53 +01:00
|
|
|
|
2001-10-22 10:32:21 +02:00
|
|
|
#ifdef FT_DEBUG_MEMORY
|
|
|
|
|
|
|
|
extern FT_Int
|
|
|
|
ft_mem_debug_init( FT_Memory memory );
|
2002-02-24 06:26:57 +01:00
|
|
|
|
2001-10-22 10:32:21 +02:00
|
|
|
extern void
|
|
|
|
ft_mem_debug_done( FT_Memory memory );
|
2002-02-24 06:26:57 +01:00
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
2000-11-07 18:21:11 +01:00
|
|
|
/* documentation is in ftobjs.h */
|
|
|
|
|
* src/base/ftcalc.c (FT_MulTo64): Commented out.
* include/freetype/internal/ftcalc.h (FT_SqrtFixed), src/base/ftcalc.c
(FT_SqrtFixed), include/freetype/internal/ftdebug.h
(FT_Trace_Get_Count, FT_Trace_Get_Name, FT_Message, FT_Panic),
src/base/ftdebug.c (FT_Trace_Get_Count, FT_Trace_Get_Name, FT_Message,
FT_Panic), include/freetype/internal/ftobjs.h (FT_New_Memory,
FT_Done_Memory), include/freetype/internal/ftstream.h
(FT_Stream_Open), src/base/ftsystem.c (FT_New_Memory, FT_Done_Memory,
FT_Stream_Open): s/FT_EXPORT/FT_BASE/.
* builds/exports.mk: Manually add TT_New_Context to EXPORTS_LIST too.
2005-11-17 02:53:07 +01:00
|
|
|
FT_BASE_DEF( FT_Memory )
|
2001-06-27 18:18:10 +02:00
|
|
|
FT_New_Memory( void )
|
2000-02-29 18:11:53 +01:00
|
|
|
{
|
|
|
|
FT_Memory memory;
|
2000-05-17 01:44:38 +02:00
|
|
|
|
2000-06-02 16:30:38 +02:00
|
|
|
|
Further C library abstraction. Based on a patch from
msn2@bidyut.com.
* include/freetype/config/ftstdlib.h (FT_CHAR_BIT, FT_FILE,
ft_fopen, ft_fclose, ft_fseek, ft_ftell, ft_fread, ft_smalloc,
ft_scalloc, ft_srealloc, ft_sfree, ft_labs): New wrapper macros for
C library functions. Update all users accordingly (and catch some
other places where the C library function was used instead of the
wrapper functions).
* src/base/ftsystem.c: Don't include stdio.h and stdlib.h.
* src/gzip/zutil.h [MSDOS && !(__TURBOC__ || __BORLANDC__)]: Don't
include malloc.h.
2006-04-29 09:31:16 +02:00
|
|
|
memory = (FT_Memory)ft_smalloc( sizeof ( *memory ) );
|
2000-06-02 16:30:38 +02:00
|
|
|
if ( memory )
|
2000-02-29 18:11:53 +01:00
|
|
|
{
|
2015-04-11 05:45:11 +02:00
|
|
|
memory->user = NULL;
|
2000-02-29 18:11:53 +01:00
|
|
|
memory->alloc = ft_alloc;
|
|
|
|
memory->realloc = ft_realloc;
|
|
|
|
memory->free = ft_free;
|
2001-10-24 09:32:55 +02:00
|
|
|
#ifdef FT_DEBUG_MEMORY
|
|
|
|
ft_mem_debug_init( memory );
|
2002-02-24 06:26:57 +01:00
|
|
|
#endif
|
2000-02-29 18:11:53 +01:00
|
|
|
}
|
2000-06-02 16:30:38 +02:00
|
|
|
|
2000-02-29 18:11:53 +01:00
|
|
|
return memory;
|
|
|
|
}
|
|
|
|
|
2000-06-02 16:30:38 +02:00
|
|
|
|
2000-11-07 18:21:11 +01:00
|
|
|
/* documentation is in ftobjs.h */
|
|
|
|
|
* src/base/ftcalc.c (FT_MulTo64): Commented out.
* include/freetype/internal/ftcalc.h (FT_SqrtFixed), src/base/ftcalc.c
(FT_SqrtFixed), include/freetype/internal/ftdebug.h
(FT_Trace_Get_Count, FT_Trace_Get_Name, FT_Message, FT_Panic),
src/base/ftdebug.c (FT_Trace_Get_Count, FT_Trace_Get_Name, FT_Message,
FT_Panic), include/freetype/internal/ftobjs.h (FT_New_Memory,
FT_Done_Memory), include/freetype/internal/ftstream.h
(FT_Stream_Open), src/base/ftsystem.c (FT_New_Memory, FT_Done_Memory,
FT_Stream_Open): s/FT_EXPORT/FT_BASE/.
* builds/exports.mk: Manually add TT_New_Context to EXPORTS_LIST too.
2005-11-17 02:53:07 +01:00
|
|
|
FT_BASE_DEF( void )
|
2001-06-27 18:18:10 +02:00
|
|
|
FT_Done_Memory( FT_Memory memory )
|
2000-07-27 23:40:22 +02:00
|
|
|
{
|
2001-10-22 10:32:21 +02:00
|
|
|
#ifdef FT_DEBUG_MEMORY
|
|
|
|
ft_mem_debug_done( memory );
|
2002-02-24 06:26:57 +01:00
|
|
|
#endif
|
2008-09-18 13:20:12 +02:00
|
|
|
ft_sfree( memory );
|
2000-07-27 23:40:22 +02:00
|
|
|
}
|
|
|
|
|
2000-07-28 01:29:08 +02:00
|
|
|
|
2000-06-02 16:30:38 +02:00
|
|
|
/* END */
|