ftutil.c File Reference

#include <freetype/internal/ftdebug.h>
#include <freetype/internal/ftmemory.h>
#include <freetype/internal/ftobjs.h>
#include <freetype/ftlist.h>

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Macros
#define	FT_COMPONENT   memory
#define	FT_COMPONENT   list

Functions
	ft_mem_alloc (FT_Memory memory, FT_Long size, FT_Error *p_error)
	ft_mem_qalloc (FT_Memory memory, FT_Long size, FT_Error *p_error)
	ft_mem_realloc (FT_Memory memory, FT_Long item_size, FT_Long cur_count, FT_Long new_count, void *block, FT_Error *p_error)
	ft_mem_qrealloc (FT_Memory memory, FT_Long item_size, FT_Long cur_count, FT_Long new_count, void *block, FT_Error *p_error)
	ft_mem_free (FT_Memory memory, const void *P)
	ft_mem_dup (FT_Memory memory, const void *address, FT_ULong size, FT_Error *p_error)
	ft_mem_strdup (FT_Memory memory, const char *str, FT_Error *p_error)
	ft_mem_strcpyn (char *dst, const char *src, FT_ULong size)
	FT_List_Find (FT_List list, void *data)
	FT_List_Add (FT_List list, FT_ListNode node)
	FT_List_Insert (FT_List list, FT_ListNode node)
	FT_List_Remove (FT_List list, FT_ListNode node)
	FT_List_Up (FT_List list, FT_ListNode node)
	FT_List_Iterate (FT_List list, FT_List_Iterator iterator, void *user)
	FT_List_Finalize (FT_List list, FT_List_Destructor destroy, FT_Memory memory, void *user)

Macro Definition Documentation

FT_COMPONENT [1/2]

#define FT_COMPONENT   memory

Definition at line 238 of file ftutil.c.

FT_COMPONENT [2/2]

#define FT_COMPONENT   list

Definition at line 238 of file ftutil.c.

Function Documentation

FT_List_Add()

FT_List_Add	(	FT_List	list,
		FT_ListNode	node
	)

Definition at line 268 of file ftutil.c.

  {
    FT_ListNode  before;
 
 
    if ( !list || !node )
      return;
 
    before = list->tail;
 
    node->next = NULL;
    node->prev = before;
 
    if ( before )
      before->next = node;
    else
      list->head = node;
 
    list->tail = node;
  }

Referenced by cff_parser_run(), ft_add_renderer(), FT_New_Size(), ft_open_face_internal(), and load_truetype_glyph().

FT_List_Finalize()

FT_List_Finalize	(	FT_List	list,
		FT_List_Destructor	destroy,
		FT_Memory	memory,
		void *	user
	)

Definition at line 412 of file ftutil.c.

  {
    FT_ListNode  cur;
 
 
    if ( !list || !memory )
      return;
 
    cur = list->head;
    while ( cur )
    {
      FT_ListNode  next = cur->next;
      void*        data = cur->data;
 
 
      if ( destroy )
        destroy( memory, data, user );
 
      FT_FREE( cur );
      cur = next;
    }
 
    list->head = NULL;
    list->tail = NULL;
  }

Referenced by cff_parser_done(), Destroy_Driver(), destroy_face(), and tt_loader_done().

FT_List_Find()

FT_List_Find	(	FT_List	list,
		void *	data
	)

Definition at line 243 of file ftutil.c.

  {
    FT_ListNode  cur;
 
 
    if ( !list )
      return NULL;
 
    cur = list->head;
    while ( cur )
    {
      if ( cur->data == data )
        return cur;
 
      cur = cur->next;
    }
 
    return NULL;
  }

Referenced by FT_Done_Face(), FT_Done_Size(), ft_remove_renderer(), FT_Set_Renderer(), load_truetype_glyph(), and T42_Size_Done().

FT_List_Insert()

FT_List_Insert	(	FT_List	list,
		FT_ListNode	node
	)

Definition at line 294 of file ftutil.c.

  {
    FT_ListNode  after;
 
 
    if ( !list || !node )
      return;
 
    after = list->head;
 
    node->next = after;
    node->prev = NULL;
 
    if ( !after )
      list->tail = node;
    else
      after->prev = node;
 
    list->head = node;
  }

FT_List_Iterate()

FT_List_Iterate	(	FT_List	list,
		FT_List_Iterator	iterator,
		void *	user
	)

Definition at line 380 of file ftutil.c.

  {
    FT_ListNode  cur;
    FT_Error     error = FT_Err_Ok;
 
 
    if ( !list || !iterator )
      return FT_THROW( Invalid_Argument );
 
    cur = list->head;
 
    while ( cur )
    {
      FT_ListNode  next = cur->next;
 
 
      error = iterator( cur, user );
      if ( error )
        break;
 
      cur = next;
    }
 
    return error;
  }

FT_List_Remove()

FT_List_Remove	(	FT_List	list,
		FT_ListNode	node
	)

Definition at line 320 of file ftutil.c.

  {
    FT_ListNode  before, after;
 
 
    if ( !list || !node )
      return;
 
    before = node->prev;
    after  = node->next;
 
    if ( before )
      before->next = after;
    else
      list->head = after;
 
    if ( after )
      after->prev = before;
    else
      list->tail = before;
  }

Referenced by FT_Done_Face(), FT_Done_Size(), and ft_remove_renderer().

FT_List_Up()

FT_List_Up	(	FT_List	list,
		FT_ListNode	node
	)

Definition at line 347 of file ftutil.c.

  {
    FT_ListNode  before, after;
 
 
    if ( !list || !node )
      return;
 
    before = node->prev;
    after  = node->next;
 
    /* check whether we are already on top of the list */
    if ( !before )
      return;
 
    before->next = after;
 
    if ( after )
      after->prev = before;
    else
      list->tail = before;
 
    node->prev       = NULL;
    node->next       = list->head;
    list->head->prev = node;
    list->head       = node;
  }

Referenced by FT_Set_Renderer().

ft_mem_alloc()

ft_mem_alloc	(	FT_Memory	memory,
		FT_Long	size,
		FT_Error *	p_error
	)

Definition at line 49 of file ftutil.c.

  {
    FT_Error    error;
    FT_Pointer  block = ft_mem_qalloc( memory, size, &error );
 
    if ( !error && block && size > 0 )
      FT_MEM_ZERO( block, size );
 
    *p_error = error;
    return block;
  }

ft_mem_dup()

ft_mem_dup	(	FT_Memory	memory,
		const void *	address,
		FT_ULong	size,
		FT_Error *	p_error
	)

Definition at line 178 of file ftutil.c.

  {
    FT_Error    error;
    FT_Pointer  p = ft_mem_qalloc( memory, (FT_Long)size, &error );
 
 
    if ( !error && address && size > 0 )
      ft_memcpy( p, address, size );
 
    *p_error = error;
    return p;
  }

Referenced by ft_mem_strdup().

ft_mem_free()

ft_mem_free	(	FT_Memory	memory,
		const void *	P
	)

Definition at line 169 of file ftutil.c.

  {
    if ( P )
      memory->free( memory, (void*)P );
  }

Referenced by ft_mem_qrealloc(), FT_Stream_ExitFrame(), and FT_Stream_ReleaseFrame().

ft_mem_qalloc()

ft_mem_qalloc	(	FT_Memory	memory,
		FT_Long	size,
		FT_Error *	p_error
	)

Definition at line 65 of file ftutil.c.

  {
    FT_Error    error = FT_Err_Ok;
    FT_Pointer  block = NULL;
 
 
    if ( size > 0 )
    {
      block = memory->alloc( memory, size );
      if ( !block )
        error = FT_THROW( Out_Of_Memory );
    }
    else if ( size < 0 )
    {
      /* may help catch/prevent security issues */
      error = FT_THROW( Invalid_Argument );
    }
 
    *p_error = error;
    return block;
  }

Referenced by ft_mem_alloc(), ft_mem_dup(), and FT_Stream_EnterFrame().

ft_mem_qrealloc()

ft_mem_qrealloc	(	FT_Memory	memory,
		FT_Long	item_size,
		FT_Long	cur_count,
		FT_Long	new_count,
		void *	block,
		FT_Error *	p_error
	)

Definition at line 113 of file ftutil.c.

  {
    FT_Error  error = FT_Err_Ok;
 
 
    /* Note that we now accept `item_size == 0' as a valid parameter, in
     * order to cover very weird cases where an ALLOC_MULT macro would be
     * called.
     */
    if ( cur_count < 0 || new_count < 0 || item_size < 0 )
    {
      /* may help catch/prevent nasty security issues */
      error = FT_THROW( Invalid_Argument );
    }
    else if ( new_count == 0 || item_size == 0 )
    {
      ft_mem_free( memory, block );
      block = NULL;
    }
    else if ( new_count > FT_INT_MAX / item_size )
    {
      error = FT_THROW( Array_Too_Large );
    }
    else if ( cur_count == 0 )
    {
      FT_ASSERT( !block );
 
      block = memory->alloc( memory, new_count * item_size );
      if ( block == NULL )
        error = FT_THROW( Out_Of_Memory );
    }
    else
    {
      FT_Pointer  block2;
      FT_Long     cur_size = cur_count * item_size;
      FT_Long     new_size = new_count * item_size;
 
 
      block2 = memory->realloc( memory, cur_size, new_size, block );
      if ( !block2 )
        error = FT_THROW( Out_Of_Memory );
      else
        block = block2;
    }
 
    *p_error = error;
    return block;
  }

Referenced by ft_mem_realloc().

ft_mem_realloc()

ft_mem_realloc	(	FT_Memory	memory,
		FT_Long	item_size,
		FT_Long	cur_count,
		FT_Long	new_count,
		void *	block,
		FT_Error *	p_error
	)

Definition at line 91 of file ftutil.c.

  {
    FT_Error  error = FT_Err_Ok;
 
 
    block = ft_mem_qrealloc( memory, item_size,
                             cur_count, new_count, block, &error );
    if ( !error && block && new_count > cur_count )
      FT_MEM_ZERO( (char*)block + cur_count * item_size,
                   ( new_count - cur_count ) * item_size );
 
    *p_error = error;
    return block;
  }

ft_mem_strcpyn()

ft_mem_strcpyn	(	char *	dst,
		const char *	src,
		FT_ULong	size
	)

Definition at line 209 of file ftutil.c.

  {
    while ( size > 1 && *src != 0 )
    {
      *dst++ = *src++;
      size--;
    }
 
    *dst = 0;  /* always zero-terminate */
 
    return *src != 0;
  }

ft_mem_strdup()

ft_mem_strdup	(	FT_Memory	memory,
		const char *	str,
		FT_Error *	p_error
	)

Definition at line 196 of file ftutil.c.

  {
    FT_ULong  len = str ? (FT_ULong)ft_strlen( str ) + 1
                        : 0;
 
 
    return ft_mem_dup( memory, str, len, p_error );
  }