| /** \file endian.h . |
| ----------------------------------------------------------------------------- |
| |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| |
| ----------------------------------------------------------------------------- |
| |
| \brief Macros to convert endianess |
| |
| -------------------------------------------------------------------------- */ |
| |
| #ifndef __UIMA_ENDIAN_H |
| #define __UIMA_ENDIAN_H |
| |
| #ifdef __cplusplus |
| #define INLINEorSTATIC inline |
| #else |
| #define INLINEorSTATIC static |
| #endif |
| |
| INLINEorSTATIC void __reverse(void *buffer, unsigned int size) { |
| char *x = (char *) buffer; |
| for (unsigned int i=0; i<size/2; i++) { |
| char t = x[i]; |
| x[i] = x[size-1-i]; |
| x[size-1-i]=t; |
| } |
| } |
| |
| |
| INLINEorSTATIC void __revarray(void *elem_array, unsigned int elem_size, unsigned int n_elem) { |
| char *p = (char *) elem_array; |
| for (unsigned int i=0; i<n_elem; i++) { |
| __reverse((void *) (p + i*elem_size),elem_size); |
| } |
| } |
| |
| /* UIMA_LOBYTEFIRST will convert n_elem of size elem_size from little-endian to |
| native byte-order or the reverse, i.e swapping if on a big-endian cpu. */ |
| |
| #ifdef WORDS_BIGENDIAN |
| #define UIMA_LOBYTEFIRST(array,elem_size,n_elem) __revarray(array,elem_size,n_elem) |
| #define UIMA_HIBYTEFIRST(array,elem_size,n_elem) |
| |
| #else |
| #define UIMA_HIBYTEFIRST(array,elem_size,n_elem) __revarray(array,elem_size,n_elem) |
| #define UIMA_LOBYTEFIRST(array,elem_size,n_elem) |
| #endif |
| |
| |
| /* Test if first UCS2 character is a byte-order mark */ |
| |
| #define hasUCS2BigEndianBOM(x) ( *((WORD16*)x) == 0xFEFF ) |
| #define hasUCS2LittleEndianBOM(x) ( *((WORD16*)x) == 0xFFFE ) |
| |
| #endif /*__UIMA_ENDIAN_H*/ |