--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/libfreetype/builds/unix/ftsystem.c Mon Apr 25 01:46:54 2011 +0200
@@ -0,0 +1,419 @@
+/***************************************************************************/
+/* */
+/* ftsystem.c */
+/* */
+/* Unix-specific FreeType low-level system interface (body). */
+/* */
+/* Copyright 1996-2001, 2002, 2004, 2005, 2006, 2007, 2008 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_Err_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_Err_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_Err_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 */