installed pty

[VSoRC/.git] / node_modules / node-pty / deps / winpty / src / shared / Buffer.cc

diff --git a/node_modules/node-pty/deps/winpty/src/shared/Buffer.cc b/node_modules/node-pty/deps/winpty/src/shared/Buffer.cc
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+++ b/node_modules/node-pty/deps/winpty/src/shared/Buffer.cc
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+// Copyright (c) 2011-2016 Ryan Prichard
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+
+#include "Buffer.h"
+
+#include <stdint.h>
+
+#include "DebugClient.h"
+#include "WinptyAssert.h"
+
+// Define the READ_BUFFER_CHECK() macro.  It *must* evaluate its condition,
+// exactly once.
+#define READ_BUFFER_CHECK(cond)                                 \
+    do {                                                        \
+        if (!(cond)) {                                          \
+            trace("decode error: %s", #cond);                   \
+            throw DecodeError();                                \
+        }                                                       \
+    } while (false)
+
+enum class Piece : uint8_t { Int32, Int64, WString };
+
+void WriteBuffer::putRawData(const void *data, size_t len) {
+    const auto p = reinterpret_cast<const char*>(data);
+    m_buf.insert(m_buf.end(), p, p + len);
+}
+
+void WriteBuffer::replaceRawData(size_t pos, const void *data, size_t len) {
+    ASSERT(pos <= m_buf.size() && len <= m_buf.size() - pos);
+    const auto p = reinterpret_cast<const char*>(data);
+    std::copy(p, p + len, &m_buf[pos]);
+}
+
+void WriteBuffer::putInt32(int32_t i) {
+    putRawValue(Piece::Int32);
+    putRawValue(i);
+}
+
+void WriteBuffer::putInt64(int64_t i) {
+    putRawValue(Piece::Int64);
+    putRawValue(i);
+}
+
+// len is in characters, excluding NUL, i.e. the number of wchar_t elements
+void WriteBuffer::putWString(const wchar_t *str, size_t len) {
+    putRawValue(Piece::WString);
+    putRawValue(static_cast<uint64_t>(len));
+    putRawData(str, sizeof(wchar_t) * len);
+}
+
+void ReadBuffer::getRawData(void *data, size_t len) {
+    ASSERT(m_off <= m_buf.size());
+    READ_BUFFER_CHECK(len <= m_buf.size() - m_off);
+    const char *const inp = &m_buf[m_off];
+    std::copy(inp, inp + len, reinterpret_cast<char*>(data));
+    m_off += len;
+}
+
+int32_t ReadBuffer::getInt32() {
+    READ_BUFFER_CHECK(getRawValue<Piece>() == Piece::Int32);
+    return getRawValue<int32_t>();
+}
+
+int64_t ReadBuffer::getInt64() {
+    READ_BUFFER_CHECK(getRawValue<Piece>() == Piece::Int64);
+    return getRawValue<int64_t>();
+}
+
+std::wstring ReadBuffer::getWString() {
+    READ_BUFFER_CHECK(getRawValue<Piece>() == Piece::WString);
+    const uint64_t charLen = getRawValue<uint64_t>();
+    READ_BUFFER_CHECK(charLen <= SIZE_MAX / sizeof(wchar_t));
+    // To be strictly conforming, we can't use the convenient wstring
+    // constructor, because the string in m_buf mightn't be aligned.
+    std::wstring ret;
+    if (charLen > 0) {
+        const size_t byteLen = charLen * sizeof(wchar_t);
+        ret.resize(charLen);
+        getRawData(&ret[0], byteLen);
+    }
+    return ret;
+}
+
+void ReadBuffer::assertEof() {
+    READ_BUFFER_CHECK(m_off == m_buf.size());
+}