diff options
Diffstat (limited to 'Build/source/libs/freetype2/freetype-2.5.0.1/builds/unix/ftsystem.c')
-rw-r--r-- | Build/source/libs/freetype2/freetype-2.5.0.1/builds/unix/ftsystem.c | 419 |
1 files changed, 419 insertions, 0 deletions
diff --git a/Build/source/libs/freetype2/freetype-2.5.0.1/builds/unix/ftsystem.c b/Build/source/libs/freetype2/freetype-2.5.0.1/builds/unix/ftsystem.c new file mode 100644 index 00000000000..92c7d921149 --- /dev/null +++ b/Build/source/libs/freetype2/freetype-2.5.0.1/builds/unix/ftsystem.c @@ -0,0 +1,419 @@ +/***************************************************************************/ +/* */ +/* ftsystem.c */ +/* */ +/* Unix-specific FreeType low-level system interface (body). */ +/* */ +/* Copyright 1996-2002, 2004-2008, 2013 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> + /* we use our special ftconfig.h file, not the standard one */ +#include <ftconfig.h> +#include FT_INTERNAL_DEBUG_H +#include FT_SYSTEM_H +#include FT_ERRORS_H +#include FT_TYPES_H +#include FT_INTERNAL_STREAM_H + + /* memory-mapping includes and definitions */ +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + +#include <sys/mman.h> +#ifndef MAP_FILE +#define MAP_FILE 0x00 +#endif + +#ifdef MUNMAP_USES_VOIDP +#define MUNMAP_ARG_CAST void * +#else +#define MUNMAP_ARG_CAST char * +#endif + +#ifdef NEED_MUNMAP_DECL + +#ifdef __cplusplus + extern "C" +#else + extern +#endif + int + munmap( char* addr, + int len ); + +#define MUNMAP_ARG_CAST char * + +#endif /* NEED_DECLARATION_MUNMAP */ + + +#include <sys/types.h> +#include <sys/stat.h> + +#ifdef HAVE_FCNTL_H +#include <fcntl.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> + + + /*************************************************************************/ + /* */ + /* MEMORY MANAGEMENT INTERFACE */ + /* */ + /*************************************************************************/ + + + /*************************************************************************/ + /* */ + /* <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 malloc( 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 realloc( block, 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 ); + + free( block ); + } + + + /*************************************************************************/ + /* */ + /* RESOURCE MANAGEMENT INTERFACE */ + /* */ + /*************************************************************************/ + + + /*************************************************************************/ + /* */ + /* 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 ) ( (FILE*)stream->descriptor.pointer ) + + + /*************************************************************************/ + /* */ + /* <Function> */ + /* ft_close_stream_by_munmap */ + /* */ + /* <Description> */ + /* The function to close a stream which is opened by mmap. */ + /* */ + /* <Input> */ + /* stream :: A pointer to the stream object. */ + /* */ + FT_CALLBACK_DEF( void ) + ft_close_stream_by_munmap( FT_Stream stream ) + { + munmap( (MUNMAP_ARG_CAST)stream->descriptor.pointer, stream->size ); + + stream->descriptor.pointer = NULL; + stream->size = 0; + stream->base = 0; + } + + + /*************************************************************************/ + /* */ + /* <Function> */ + /* ft_close_stream_by_free */ + /* */ + /* <Description> */ + /* The function to close a stream which is created by ft_alloc. */ + /* */ + /* <Input> */ + /* stream :: A pointer to the stream object. */ + /* */ + FT_CALLBACK_DEF( void ) + ft_close_stream_by_free( FT_Stream stream ) + { + ft_free( NULL, stream->descriptor.pointer ); + + stream->descriptor.pointer = NULL; + stream->size = 0; + stream->base = 0; + } + + + /* documentation is in ftobjs.h */ + + FT_BASE_DEF( FT_Error ) + FT_Stream_Open( FT_Stream stream, + const char* filepathname ) + { + int file; + struct stat stat_buf; + + + if ( !stream ) + return FT_THROW( Invalid_Stream_Handle ); + + /* open the file */ + file = open( filepathname, O_RDONLY ); + if ( file < 0 ) + { + FT_ERROR(( "FT_Stream_Open:" )); + FT_ERROR(( " could not open `%s'\n", filepathname )); + return FT_THROW( Cannot_Open_Resource ); + } + + /* Here we ensure that a "fork" will _not_ duplicate */ + /* our opened input streams on Unix. This is critical */ + /* since it avoids some (possible) access control */ + /* issues and cleans up the kernel file table a bit. */ + /* */ +#ifdef F_SETFD +#ifdef FD_CLOEXEC + (void)fcntl( file, F_SETFD, FD_CLOEXEC ); +#else + (void)fcntl( file, F_SETFD, 1 ); +#endif /* FD_CLOEXEC */ +#endif /* F_SETFD */ + + if ( fstat( file, &stat_buf ) < 0 ) + { + FT_ERROR(( "FT_Stream_Open:" )); + FT_ERROR(( " could not `fstat' file `%s'\n", filepathname )); + goto Fail_Map; + } + + /* XXX: TODO -- real 64bit platform support */ + /* */ + /* `stream->size' is typedef'd to unsigned long (in */ + /* freetype/ftsystem.h); `stat_buf.st_size', however, is usually */ + /* typedef'd to off_t (in sys/stat.h). */ + /* On some platforms, the former is 32bit and the latter is 64bit. */ + /* To avoid overflow caused by fonts in huge files larger than */ + /* 2GB, do a test. Temporary fix proposed by Sean McBride. */ + /* */ + if ( stat_buf.st_size > LONG_MAX ) + { + FT_ERROR(( "FT_Stream_Open: file is too big\n" )); + goto Fail_Map; + } + else if ( stat_buf.st_size == 0 ) + { + FT_ERROR(( "FT_Stream_Open: zero-length file\n" )); + goto Fail_Map; + } + + /* This cast potentially truncates a 64bit to 32bit! */ + stream->size = (unsigned long)stat_buf.st_size; + stream->pos = 0; + stream->base = (unsigned char *)mmap( NULL, + stream->size, + PROT_READ, + MAP_FILE | MAP_PRIVATE, + file, + 0 ); + + /* on some RTOS, mmap might return 0 */ + if ( (long)stream->base != -1 && stream->base != NULL ) + stream->close = ft_close_stream_by_munmap; + else + { + ssize_t total_read_count; + + + FT_ERROR(( "FT_Stream_Open:" )); + FT_ERROR(( " could not `mmap' file `%s'\n", filepathname )); + + stream->base = (unsigned char*)ft_alloc( NULL, stream->size ); + + if ( !stream->base ) + { + FT_ERROR(( "FT_Stream_Open:" )); + FT_ERROR(( " could not `alloc' memory\n" )); + goto Fail_Map; + } + + total_read_count = 0; + do { + ssize_t read_count; + + + read_count = read( file, + stream->base + total_read_count, + stream->size - total_read_count ); + + if ( read_count <= 0 ) + { + if ( read_count == -1 && errno == EINTR ) + continue; + + FT_ERROR(( "FT_Stream_Open:" )); + FT_ERROR(( " error while `read'ing file `%s'\n", filepathname )); + goto Fail_Read; + } + + total_read_count += read_count; + + } while ( (unsigned long)total_read_count != stream->size ); + + stream->close = ft_close_stream_by_free; + } + + close( file ); + + stream->descriptor.pointer = stream->base; + stream->pathname.pointer = (char*)filepathname; + + stream->read = 0; + + FT_TRACE1(( "FT_Stream_Open:" )); + FT_TRACE1(( " opened `%s' (%d bytes) successfully\n", + filepathname, stream->size )); + + return FT_Err_Ok; + + Fail_Read: + ft_free( NULL, stream->base ); + + Fail_Map: + close( file ); + + stream->base = NULL; + stream->size = 0; + stream->pos = 0; + + return FT_THROW( Cannot_Open_Stream ); + } + + +#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)malloc( sizeof ( *memory ) ); + if ( memory ) + { + memory->user = 0; + 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 + memory->free( memory, memory ); + } + + +/* END */ |