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-rw-r--r--src/3rdparty/freetype/src/base/ftsystem.c304
1 files changed, 161 insertions, 143 deletions
diff --git a/src/3rdparty/freetype/src/base/ftsystem.c b/src/3rdparty/freetype/src/base/ftsystem.c
index 6adebdb938..61c99e3635 100644
--- a/src/3rdparty/freetype/src/base/ftsystem.c
+++ b/src/3rdparty/freetype/src/base/ftsystem.c
@@ -1,70 +1,72 @@
-/***************************************************************************/
-/* */
-/* ftsystem.c */
-/* */
-/* ANSI-specific FreeType low-level system interface (body). */
-/* */
-/* Copyright 1996-2018 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. */
- /* */
- /*************************************************************************/
+/****************************************************************************
+ *
+ * ftsystem.c
+ *
+ * ANSI-specific FreeType low-level system interface (body).
+ *
+ * Copyright (C) 1996-2023 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. */
- /* */
+#include <freetype/internal/ftdebug.h>
+#include <freetype/internal/ftstream.h>
+#include <freetype/ftsystem.h>
+#include <freetype/fterrors.h>
+#include <freetype/fttypes.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 )
@@ -75,26 +77,30 @@
}
- /*************************************************************************/
- /* */
- /* <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. */
- /* */
+ /**************************************************************************
+ *
+ * @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,
@@ -108,19 +114,21 @@
}
- /*************************************************************************/
- /* */
- /* <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. */
- /* */
+ /**************************************************************************
+ *
+ * @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 )
@@ -131,39 +139,40 @@
}
- /*************************************************************************/
- /* */
- /* RESOURCE MANAGEMENT INTERFACE */
- /* */
- /*************************************************************************/
+ /**************************************************************************
+ *
+ * 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. */
- /* */
+ /**************************************************************************
+ *
+ * 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
+#define FT_COMPONENT 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. */
- /* */
+ /**************************************************************************
+ *
+ * @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 )
{
@@ -175,28 +184,32 @@
}
- /*************************************************************************/
- /* */
- /* <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. */
- /* */
+ /**************************************************************************
+ *
+ * @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 (that 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,
@@ -206,7 +219,7 @@
FT_FILE* file;
- if ( !count && offset > stream->size )
+ if ( offset > stream->size && !count )
return 1;
file = STREAM_FILE( stream );
@@ -214,6 +227,11 @@
if ( stream->pos != offset )
ft_fseek( file, (long)offset, SEEK_SET );
+ /* Avoid calling `fread` with `buffer=NULL` and `count=0`, */
+ /* which is undefined behaviour. */
+ if ( !count )
+ return 0;
+
return (unsigned long)ft_fread( buffer, 1, count, file );
}
@@ -262,7 +280,7 @@
stream->close = ft_ansi_stream_close;
FT_TRACE1(( "FT_Stream_Open:" ));
- FT_TRACE1(( " opened `%s' (%d bytes) successfully\n",
+ FT_TRACE1(( " opened `%s' (%ld bytes) successfully\n",
filepathname, stream->size ));
return FT_Err_Ok;
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-07 01:16:35 +0000