Implemented swap_data() and is_type_swapped() - tests follow soon.
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@8177 a95241bf-73f2-0310-859d-f6bbb57e9c96
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Axel Dörfler
parent
e2267fbff8
commit
2397827a6f
@ -1,22 +1,165 @@
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// Quick and dirty implementation of the byte order functions.
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// Just here to be able to compile and test BFile.
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// To be replaced by the OpenBeOS version to be provided by the IK Team.
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/*
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** Copyright 2004, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
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** Distributed under the terms of the Haiku License.
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*/
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#include <ByteOrder.h>
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#include <Messenger.h>
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#include "LibBeAdapter.h"
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// swap_data
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status_t
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swap_data(type_code type, void *data, size_t length, swap_action action)
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swap_data(type_code type, void *_data, size_t length, swap_action action)
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{
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return swap_data_adapter(type, data, length, action);
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// is there anything to do?
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#if B_HOST_IS_LENDIAN
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if (action == B_SWAP_HOST_TO_LENDIAN || action == B_SWAP_LENDIAN_TO_HOST)
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return B_OK;
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#else
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if (action == B_SWAP_HOST_TO_BENDIAN || action == B_SWAP_BENDIAN_TO_HOST)
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return B_OK;
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#endif
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if (_data == NULL || length == 0)
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return B_BAD_VALUE;
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switch (type) {
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// 8 bit types or other non-swappable data
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case B_BOOL_TYPE:
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case B_CHAR_TYPE:
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case B_COLOR_8_BIT_TYPE:
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case B_INT8_TYPE:
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case B_UINT8_TYPE:
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case B_GRAYSCALE_8_BIT_TYPE:
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case B_MONOCHROME_1_BIT_TYPE:
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case B_RGB_COLOR_TYPE:
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// nothing to do here
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// ToDo: should we return an error here like the original?
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break;
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// 16 bit types
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case B_INT16_TYPE:
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case B_UINT16_TYPE:
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{
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uint16 *data = (uint16 *)_data;
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uint16 *end = (uint16 *)((addr_t)_data + length);
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while (data < end) {
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*data = __swap_int16(*data);
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data++;
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}
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break;
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}
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// 32 bit types
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case B_FLOAT_TYPE:
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case B_INT32_TYPE:
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case B_UINT32_TYPE:
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case B_SIZE_T_TYPE:
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case B_SSIZE_T_TYPE:
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case B_TIME_TYPE:
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case B_POINTER_TYPE:
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case B_RECT_TYPE:
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case B_POINT_TYPE:
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{
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// ToDo: some of these types may not be 32-bit on 64-bit platforms!
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uint32 *data = (uint32 *)_data;
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uint32 *end = (uint32 *)((addr_t)_data + length);
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while (data < end) {
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*data = __swap_int32(*data);
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data++;
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}
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break;
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}
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// 64 bit types
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case B_DOUBLE_TYPE:
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case B_INT64_TYPE:
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case B_UINT64_TYPE:
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case B_OFF_T_TYPE:
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{
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uint64 *data = (uint64 *)_data;
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uint64 *end = (uint64 *)((addr_t)_data + length);
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while (data < end) {
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*data = __swap_int64(*data);
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data++;
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}
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break;
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}
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// special types
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case B_MESSENGER_TYPE:
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{
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BMessenger *messenger = (BMessenger *)_data;
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BMessenger *end = (BMessenger *)((addr_t)_data + length);
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while (messenger < end) {
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// ToDo: if the additional fields change, this function has to be updated!
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messenger->fPort = __swap_int32(messenger->fPort);
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messenger->fHandlerToken = __swap_int32(messenger->fHandlerToken);
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messenger->fTeam = __swap_int32(messenger->fTeam);
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messenger++;
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}
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break;
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}
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default:
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// not swappable or a recognized type!
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return B_BAD_VALUE;
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}
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return B_OK;
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}
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// is_type_swapped
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bool
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is_type_swapped(type_code type)
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{
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return is_type_swapped_adapter(type);
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// Returns true when the type is in the host's native format
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// Looks like a pretty strange function to me :)
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switch (type) {
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case B_ANY_TYPE:
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case B_BOOL_TYPE:
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case B_CHAR_TYPE:
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case B_COLOR_8_BIT_TYPE:
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case B_DOUBLE_TYPE:
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case B_FLOAT_TYPE:
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case B_GRAYSCALE_8_BIT_TYPE:
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case B_INT64_TYPE:
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case B_INT32_TYPE:
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case B_INT16_TYPE:
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case B_INT8_TYPE:
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case B_MESSAGE_TYPE:
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case B_MESSENGER_TYPE:
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case B_MIME_TYPE:
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case B_MONOCHROME_1_BIT_TYPE:
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case B_OBJECT_TYPE:
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case B_OFF_T_TYPE:
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case B_PATTERN_TYPE:
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case B_POINTER_TYPE:
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case B_POINT_TYPE:
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case B_RAW_TYPE:
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case B_RECT_TYPE:
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case B_REF_TYPE:
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case B_RGB_32_BIT_TYPE:
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case B_RGB_COLOR_TYPE:
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case B_SIZE_T_TYPE:
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case B_SSIZE_T_TYPE:
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case B_STRING_TYPE:
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case B_TIME_TYPE:
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case B_UINT64_TYPE:
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case B_UINT32_TYPE:
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case B_UINT16_TYPE:
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case B_UINT8_TYPE:
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case B_MEDIA_PARAMETER_TYPE:
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case B_MEDIA_PARAMETER_WEB_TYPE:
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case B_MEDIA_PARAMETER_GROUP_TYPE:
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return true;
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}
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return false;
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}
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@ -1,6 +1,7 @@
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SUPPORT_KIT_SOURCE =
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Archivable.cpp
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BlockCache.cpp
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ByteOrder.cpp
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DataIO.cpp
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BufferIO.cpp
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Flattenable.cpp
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