forked from minhngoc25a/freetype2
246 lines
7.5 KiB
C
246 lines
7.5 KiB
C
/****************************************************************************
|
|
*
|
|
* ftrfork.h
|
|
*
|
|
* Embedded resource forks accessor (specification).
|
|
*
|
|
* Copyright (C) 2004-2021 by
|
|
* Masatake YAMATO and Redhat K.K.
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
/****************************************************************************
|
|
* Development of the code in this file is support of
|
|
* Information-technology Promotion Agency, Japan.
|
|
*/
|
|
|
|
|
|
#ifndef FTRFORK_H_
|
|
#define FTRFORK_H_
|
|
|
|
|
|
#include <freetype/internal/ftobjs.h>
|
|
|
|
|
|
FT_BEGIN_HEADER
|
|
|
|
|
|
/* Number of guessing rules supported in `FT_Raccess_Guess'. */
|
|
/* Don't forget to increment the number if you add a new guessing rule. */
|
|
#define FT_RACCESS_N_RULES 9
|
|
|
|
|
|
/* A structure to describe a reference in a resource by its resource ID */
|
|
/* and internal offset. The `POST' resource expects to be concatenated */
|
|
/* by the order of resource IDs instead of its appearance in the file. */
|
|
|
|
typedef struct FT_RFork_Ref_
|
|
{
|
|
FT_Short res_id;
|
|
FT_Long offset;
|
|
|
|
} FT_RFork_Ref;
|
|
|
|
|
|
#ifdef FT_CONFIG_OPTION_GUESSING_EMBEDDED_RFORK
|
|
typedef FT_Error
|
|
(*ft_raccess_guess_func)( FT_Library library,
|
|
FT_Stream stream,
|
|
char *base_file_name,
|
|
char **result_file_name,
|
|
FT_Long *result_offset );
|
|
|
|
typedef enum FT_RFork_Rule_ {
|
|
FT_RFork_Rule_invalid = -2,
|
|
FT_RFork_Rule_uknown, /* -1 */
|
|
FT_RFork_Rule_apple_double,
|
|
FT_RFork_Rule_apple_single,
|
|
FT_RFork_Rule_darwin_ufs_export,
|
|
FT_RFork_Rule_darwin_newvfs,
|
|
FT_RFork_Rule_darwin_hfsplus,
|
|
FT_RFork_Rule_vfat,
|
|
FT_RFork_Rule_linux_cap,
|
|
FT_RFork_Rule_linux_double,
|
|
FT_RFork_Rule_linux_netatalk
|
|
} FT_RFork_Rule;
|
|
|
|
/* For fast translation between rule index and rule type,
|
|
* the macros FT_RFORK_xxx should be kept consistent with the
|
|
* raccess_guess_funcs table
|
|
*/
|
|
typedef struct ft_raccess_guess_rec_ {
|
|
ft_raccess_guess_func func;
|
|
FT_RFork_Rule type;
|
|
} ft_raccess_guess_rec;
|
|
|
|
|
|
#define CONST_FT_RFORK_RULE_ARRAY_BEGIN( name, type ) \
|
|
static const type name[] = {
|
|
#define CONST_FT_RFORK_RULE_ARRAY_ENTRY( func_suffix, type_suffix ) \
|
|
{ raccess_guess_ ## func_suffix, \
|
|
FT_RFork_Rule_ ## type_suffix },
|
|
/* this array is a storage, thus a final `;' is needed */
|
|
#define CONST_FT_RFORK_RULE_ARRAY_END };
|
|
|
|
#endif /* FT_CONFIG_OPTION_GUESSING_EMBEDDED_RFORK */
|
|
|
|
|
|
/**************************************************************************
|
|
*
|
|
* @function:
|
|
* FT_Raccess_Guess
|
|
*
|
|
* @description:
|
|
* Guess a file name and offset where the actual resource fork is stored.
|
|
* The macro FT_RACCESS_N_RULES holds the number of guessing rules; the
|
|
* guessed result for the Nth rule is represented as a triplet: a new
|
|
* file name (new_names[N]), a file offset (offsets[N]), and an error
|
|
* code (errors[N]).
|
|
*
|
|
* @input:
|
|
* library ::
|
|
* A FreeType library instance.
|
|
*
|
|
* stream ::
|
|
* A file stream containing the resource fork.
|
|
*
|
|
* base_name ::
|
|
* The (base) file name of the resource fork used for some guessing
|
|
* rules.
|
|
*
|
|
* @output:
|
|
* new_names ::
|
|
* An array of guessed file names in which the resource forks may
|
|
* exist. If 'new_names[N]' is `NULL`, the guessed file name is equal
|
|
* to `base_name`.
|
|
*
|
|
* offsets ::
|
|
* An array of guessed file offsets. 'offsets[N]' holds the file
|
|
* offset of the possible start of the resource fork in file
|
|
* 'new_names[N]'.
|
|
*
|
|
* errors ::
|
|
* An array of FreeType error codes. 'errors[N]' is the error code of
|
|
* Nth guessing rule function. If 'errors[N]' is not FT_Err_Ok,
|
|
* 'new_names[N]' and 'offsets[N]' are meaningless.
|
|
*/
|
|
FT_BASE( void )
|
|
FT_Raccess_Guess( FT_Library library,
|
|
FT_Stream stream,
|
|
char* base_name,
|
|
char** new_names,
|
|
FT_Long* offsets,
|
|
FT_Error* errors );
|
|
|
|
|
|
/**************************************************************************
|
|
*
|
|
* @function:
|
|
* FT_Raccess_Get_HeaderInfo
|
|
*
|
|
* @description:
|
|
* Get the information from the header of resource fork. The information
|
|
* includes the file offset where the resource map starts, and the file
|
|
* offset where the resource data starts. `FT_Raccess_Get_DataOffsets`
|
|
* requires these two data.
|
|
*
|
|
* @input:
|
|
* library ::
|
|
* A FreeType library instance.
|
|
*
|
|
* stream ::
|
|
* A file stream containing the resource fork.
|
|
*
|
|
* rfork_offset ::
|
|
* The file offset where the resource fork starts.
|
|
*
|
|
* @output:
|
|
* map_offset ::
|
|
* The file offset where the resource map starts.
|
|
*
|
|
* rdata_pos ::
|
|
* The file offset where the resource data starts.
|
|
*
|
|
* @return:
|
|
* FreeType error code. FT_Err_Ok means success.
|
|
*/
|
|
FT_BASE( FT_Error )
|
|
FT_Raccess_Get_HeaderInfo( FT_Library library,
|
|
FT_Stream stream,
|
|
FT_Long rfork_offset,
|
|
FT_Long *map_offset,
|
|
FT_Long *rdata_pos );
|
|
|
|
|
|
/**************************************************************************
|
|
*
|
|
* @function:
|
|
* FT_Raccess_Get_DataOffsets
|
|
*
|
|
* @description:
|
|
* Get the data offsets for a tag in a resource fork. Offsets are stored
|
|
* in an array because, in some cases, resources in a resource fork have
|
|
* the same tag.
|
|
*
|
|
* @input:
|
|
* library ::
|
|
* A FreeType library instance.
|
|
*
|
|
* stream ::
|
|
* A file stream containing the resource fork.
|
|
*
|
|
* map_offset ::
|
|
* The file offset where the resource map starts.
|
|
*
|
|
* rdata_pos ::
|
|
* The file offset where the resource data starts.
|
|
*
|
|
* tag ::
|
|
* The resource tag.
|
|
*
|
|
* sort_by_res_id ::
|
|
* A Boolean to sort the fragmented resource by their ids. The
|
|
* fragmented resources for 'POST' resource should be sorted to restore
|
|
* Type1 font properly. For 'sfnt' resources, sorting may induce a
|
|
* different order of the faces in comparison to that by QuickDraw API.
|
|
*
|
|
* @output:
|
|
* offsets ::
|
|
* The stream offsets for the resource data specified by 'tag'. This
|
|
* array is allocated by the function, so you have to call @ft_mem_free
|
|
* after use.
|
|
*
|
|
* count ::
|
|
* The length of offsets array.
|
|
*
|
|
* @return:
|
|
* FreeType error code. FT_Err_Ok means success.
|
|
*
|
|
* @note:
|
|
* Normally you should use `FT_Raccess_Get_HeaderInfo` to get the value
|
|
* for `map_offset` and `rdata_pos`.
|
|
*/
|
|
FT_BASE( FT_Error )
|
|
FT_Raccess_Get_DataOffsets( FT_Library library,
|
|
FT_Stream stream,
|
|
FT_Long map_offset,
|
|
FT_Long rdata_pos,
|
|
FT_Long tag,
|
|
FT_Bool sort_by_res_id,
|
|
FT_Long **offsets,
|
|
FT_Long *count );
|
|
|
|
|
|
FT_END_HEADER
|
|
|
|
#endif /* FTRFORK_H_ */
|
|
|
|
|
|
/* END */
|