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authorGeorge Hazan <ghazan@miranda.im>2022-09-14 07:12:15 -0700
committerGeorge Hazan <ghazan@miranda.im>2022-09-14 07:12:15 -0700
commit33ed2f727a3a37abf2a1e0e9735f71d4ea693f11 (patch)
treea53f4b12b0b9d202b63374a467e1eff4b12c37a3 /include/google/protobuf/endian.h
parent5f3023faa7ae78f8577ca28c63c4f0dffd965e12 (diff)
protobuf headers & libs
Diffstat (limited to 'include/google/protobuf/endian.h')
-rw-r--r--include/google/protobuf/endian.h198
1 files changed, 198 insertions, 0 deletions
diff --git a/include/google/protobuf/endian.h b/include/google/protobuf/endian.h
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+++ b/include/google/protobuf/endian.h
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+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc. All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef GOOGLE_PROTOBUF_ENDIAN_H__
+#define GOOGLE_PROTOBUF_ENDIAN_H__
+
+#if defined(_MSC_VER)
+#include <stdlib.h>
+#endif
+
+#include <cstdint>
+
+// Must be included last.
+#include <google/protobuf/port_def.inc>
+
+namespace google {
+namespace protobuf {
+namespace internal {
+
+inline uint64_t BSwap64(uint64_t host_int) {
+#if defined(PROTOBUF_BUILTIN_BSWAP64)
+ return PROTOBUF_BUILTIN_BSWAP64(host_int);
+#elif defined(_MSC_VER)
+ return _byteswap_uint64(host_int);
+#else
+ return (((host_int & uint64_t{0xFF}) << 56) |
+ ((host_int & uint64_t{0xFF00}) << 40) |
+ ((host_int & uint64_t{0xFF0000}) << 24) |
+ ((host_int & uint64_t{0xFF000000}) << 8) |
+ ((host_int & uint64_t{0xFF00000000}) >> 8) |
+ ((host_int & uint64_t{0xFF0000000000}) >> 24) |
+ ((host_int & uint64_t{0xFF000000000000}) >> 40) |
+ ((host_int & uint64_t{0xFF00000000000000}) >> 56));
+#endif
+}
+
+inline uint32_t BSwap32(uint32_t host_int) {
+#if defined(PROTOBUF_BUILTIN_BSWAP32)
+ return PROTOBUF_BUILTIN_BSWAP32(host_int);
+#elif defined(_MSC_VER)
+ return _byteswap_ulong(host_int);
+#else
+ return (((host_int & uint32_t{0xFF}) << 24) |
+ ((host_int & uint32_t{0xFF00}) << 8) |
+ ((host_int & uint32_t{0xFF0000}) >> 8) |
+ ((host_int & uint32_t{0xFF000000}) >> 24));
+#endif
+}
+
+inline uint16_t BSwap16(uint16_t host_int) {
+#if defined(PROTOBUF_BUILTIN_BSWAP16)
+ return PROTOBUF_BUILTIN_BSWAP16(host_int);
+#elif defined(_MSC_VER)
+ return _byteswap_ushort(host_int);
+#else
+ return (((host_int & uint16_t{0xFF}) << 8) |
+ ((host_int & uint16_t{0xFF00}) >> 8));
+#endif
+}
+
+namespace little_endian {
+
+inline uint16_t FromHost(uint16_t value) {
+#if defined(PROTOBUF_BIG_ENDIAN)
+ return BSwap16(value);
+#else
+ return value;
+#endif
+}
+
+inline uint32_t FromHost(uint32_t value) {
+#if defined(PROTOBUF_BIG_ENDIAN)
+ return BSwap32(value);
+#else
+ return value;
+#endif
+}
+
+inline uint64_t FromHost(uint64_t value) {
+#if defined(PROTOBUF_BIG_ENDIAN)
+ return BSwap64(value);
+#else
+ return value;
+#endif
+}
+
+inline uint16_t ToHost(uint16_t value) {
+#if defined(PROTOBUF_BIG_ENDIAN)
+ return BSwap16(value);
+#else
+ return value;
+#endif
+}
+
+inline uint32_t ToHost(uint32_t value) {
+#if defined(PROTOBUF_BIG_ENDIAN)
+ return BSwap32(value);
+#else
+ return value;
+#endif
+}
+
+inline uint64_t ToHost(uint64_t value) {
+#if defined(PROTOBUF_BIG_ENDIAN)
+ return BSwap64(value);
+#else
+ return value;
+#endif
+}
+
+} // namespace little_endian
+
+namespace big_endian {
+
+inline uint16_t FromHost(uint16_t value) {
+#if defined(PROTOBUF_BIG_ENDIAN)
+ return value;
+#else
+ return BSwap16(value);
+#endif
+}
+
+inline uint32_t FromHost(uint32_t value) {
+#if defined(PROTOBUF_BIG_ENDIAN)
+ return value;
+#else
+ return BSwap32(value);
+#endif
+}
+
+inline uint64_t FromHost(uint64_t value) {
+#if defined(PROTOBUF_BIG_ENDIAN)
+ return value;
+#else
+ return BSwap64(value);
+#endif
+}
+
+inline uint16_t ToHost(uint16_t value) {
+#if defined(PROTOBUF_BIG_ENDIAN)
+ return value;
+#else
+ return BSwap16(value);
+#endif
+}
+
+inline uint32_t ToHost(uint32_t value) {
+#if defined(PROTOBUF_BIG_ENDIAN)
+ return value;
+#else
+ return BSwap32(value);
+#endif
+}
+
+inline uint64_t ToHost(uint64_t value) {
+#if defined(PROTOBUF_BIG_ENDIAN)
+ return value;
+#else
+ return BSwap64(value);
+#endif
+}
+
+} // namespace big_endian
+
+} // namespace internal
+} // namespace protobuf
+} // namespace google
+
+#include <google/protobuf/port_undef.inc>
+
+#endif // GOOGLE_PROTOBUF_ENDIAN_H__