--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xml/cxmllibrary/src/utils/src/nwx_buffer.c	Tue Aug 31 17:02:56 2010 +0300
@@ -0,0 +1,228 @@
+/*
+* Copyright (c) 1999 - 2001 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+*
+*/
+
+
+/*****************************************************************
+**    File name:  NW_Buffer.c
+**    Part of: Buffer
+**    Version: 3/16/99      Initial version
+**    Description:  Provides the interface to a managerd buffer of bytes.
+**                  The buffer contains an allocated size and an in use 
+**                  size (length)  and also a pointer to a data array.
+******************************************************************/
+
+/*
+**-------------------------------------------------------------------------
+**  Include Files
+**-------------------------------------------------------------------------
+*/
+#include "nwx_buffer.h"
+#include "nwx_mem.h"
+#include "nwx_assert.h"
+#include "nw_string_utils.h"
+
+/*
+**-------------------------------------------------------------------------
+**  Constants
+**-------------------------------------------------------------------------
+*/
+
+/*
+**-------------------------------------------------------------------------
+**  Internal Types
+**-------------------------------------------------------------------------
+*/
+
+/*
+**-------------------------------------------------------------------------
+**  Macros
+**-------------------------------------------------------------------------
+*/
+
+/*
+**-------------------------------------------------------------------------
+**  Internal Prototypes
+**-------------------------------------------------------------------------
+*/
+
+/*
+**-------------------------------------------------------------------------
+**  File Scoped Static Variables
+**-------------------------------------------------------------------------
+*/
+
+/*
+**-------------------------------------------------------------------------
+**  Global Variable Definitions
+**-------------------------------------------------------------------------
+*/
+
+/*
+**-------------------------------------------------------------------------
+**  Internal Functions
+**-------------------------------------------------------------------------
+*/
+static NW_Status_t Resize_Data(NW_Buffer_t *buffer, const NW_Uint32 len)
+{
+  void *temp;
+
+  if (buffer->allocatedLength < len) {
+    temp = NW_Mem_Malloc(len);
+    if (temp == NULL)
+      return NW_STAT_OUT_OF_MEMORY;
+    NW_Mem_Free(buffer->data);
+    buffer->length = 0;
+    buffer->allocatedLength = len;
+    buffer->data = temp;
+  }
+  return NW_STAT_SUCCESS;
+}
+
+
+/*
+**-------------------------------------------------------------------------
+**  External Public (Exported) Functions
+**-------------------------------------------------------------------------
+*/
+
+/*****************************************************************
+**  Name:  NW_Buffer_New
+**  Description:  creates a new buffer
+**  Parameters:   size  - size to allocate
+**  Return Value: pointer to the new buffer
+******************************************************************/
+NW_Buffer_t *NW_Buffer_New(const NW_Uint32 size)    
+{
+  NW_Buffer_t *buffer;
+
+  buffer = NW_Mem_Malloc(sizeof(NW_Buffer_t));
+  if (buffer != NULL) {
+    buffer->length = 0;
+    buffer->allocatedLength = size;
+    buffer->data = NULL;
+    if (size > 0) {
+      buffer->data = NW_Mem_Malloc(size);
+      if (buffer->data == NULL) {
+        NW_Mem_Free(buffer);
+        return NULL;
+      }
+    }
+  }
+  return buffer;
+}
+
+/*****************************************************************
+**  Name:  NW_Buffer_Free
+**  Description:  frees the space allocated for a buffer
+**  Parameters:   *buffer - the buffer to free
+**  Return Value: void 
+******************************************************************/
+EXPORT_C void NW_Buffer_Free(NW_Buffer_t *buffer)    
+{
+  if (buffer != NULL) {
+    if (buffer->data != NULL) {
+      NW_Mem_Free(buffer->data);
+      buffer->data = NULL;
+    }
+    NW_Mem_Free(buffer);
+  }
+  return;
+}
+
+/*****************************************************************
+**  Name:  NW_Buffer_FreeNotData
+**  Description:  free the space allocated for a buffer. 
+**  Parameters:   *buffer - the buffer to free
+**  Return Value: void 
+**  Notes:  This does not free the data
+******************************************************************/
+EXPORT_C void NW_Buffer_FreeNotData(NW_Buffer_t *buffer)
+{
+  if (buffer != NULL) {
+    buffer->data = NULL;
+    NW_Mem_Free(buffer);
+  }
+  return;
+}
+
+/*****************************************************************
+**  Name:  NW_Buffer_CopyStr
+**  Description:  Copy NULL terminated string into buffer and adjust 
+**                length.  If necessary, reallocate space.
+**  Parameters:   *buffer - the buffer to copy to
+**                *str - the string to copy from
+**  Return Value: NW_STAT_SUCCESS if succeeds, else NW_STAT_OUT_OF_MEMORY 
+******************************************************************/
+NW_Status_t NW_Buffer_CopyStr(NW_Buffer_t *buffer, const NW_Ucs2 *str)
+{
+  NW_Uint16 len;
+
+  NW_ASSERT(buffer != NULL);
+  NW_ASSERT(str != NULL);
+
+  len = (NW_Uint16)NW_Str_Strsize(str);
+  if (Resize_Data(buffer, len) == NW_STAT_OUT_OF_MEMORY)
+    return NW_STAT_OUT_OF_MEMORY;
+  NW_Mem_memcpy(buffer->data, str, len);
+  buffer->length = len;
+  return NW_STAT_SUCCESS;
+}
+
+/*****************************************************************
+**  Name:  NW_Buffer_CopyBuffers
+**  Description:  Copy NW_Buffer into buffer (NW_Buffer) 
+**                and adjust length. If necessary, reallocate space.
+**  Parameters:   *to - the buffer to copy to
+**                *from - the buffer to copy from
+**  Return Value: NW_STAT_SUCCESS if succeeds, else NW_STAT_OUT_OF_MEMORY 
+******************************************************************/
+NW_Status_t NW_Buffer_CopyBuffers(NW_Buffer_t *to, const NW_Buffer_t *from)
+{
+  NW_ASSERT(to != NULL);
+  NW_ASSERT(from != NULL);
+
+  if (Resize_Data(to, from->length) == NW_STAT_OUT_OF_MEMORY)
+    return NW_STAT_OUT_OF_MEMORY;
+  NW_Mem_memcpy(to->data, from->data, from->length);
+  to->length = from->length;
+  return NW_STAT_SUCCESS;
+}
+
+/*****************************************************************
+**  Name:  NW_Buffer_SetData
+**  Description:  Set NULL terminated ascii string into buffer and  
+**                adjust length.
+**  Parameters:   *buffer - the buffer to copy to
+**                *str - the string to set into buffer
+**  Return Value: void 
+******************************************************************/
+void NW_Buffer_SetData(NW_Buffer_t *buffer, char *str)
+{
+  NW_Uint32 len;
+
+  NW_ASSERT(buffer != NULL);
+  NW_ASSERT(str != NULL);
+
+  if(buffer->data != NULL) {
+    NW_Mem_Free(buffer->data);
+  } 
+  len = (NW_Asc_strlen(str) + 1) * sizeof(char);
+  buffer->length = len;
+  buffer->allocatedLength = len;
+  buffer->data = (NW_Byte *)str;
+  return;
+}