1 files changed, 345 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/framing/Buffer.cpp b/qpid/cpp/src/qpid/framing/Buffer.cpp
new file mode 100644
index 0000000000..5a5bc0325e
--- /dev/null
+++ b/qpid/cpp/src/qpid/framing/Buffer.cpp
@@ -0,0 +1,345 @@
+/*
+ *
+ * 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.
+ *
+ */
+#include "qpid/framing/Buffer.h"
+#include "qpid/framing/FieldTable.h" 
+#include "qpid/Msg.h"
+#include <string.h>
+#include <boost/format.hpp>
+namespace qpid {
+
+namespace framing {
+
+Buffer::Buffer(char* _data, uint32_t _size)
+    : size(_size), data(_data), position(0) {
+}
+
+void Buffer::record(){
+    r_position = position;
+}
+
+void Buffer::restore(bool reRecord){
+    uint32_t savedPosition = position;
+
+    position = r_position;
+
+    if (reRecord)
+	r_position = savedPosition;
+}
+
+void Buffer::reset(){
+    position = 0;
+}
+
+///////////////////////////////////////////////////
+
+void Buffer::putOctet(uint8_t i){
+    data[position++] = i;
+    assert(position <= size);
+}
+
+void Buffer::putShort(uint16_t i){
+    uint16_t b = i;
+    data[position++] = (uint8_t) (0xFF & (b >> 8));
+    data[position++] = (uint8_t) (0xFF & b);
+    assert(position <= size);
+}
+
+void Buffer::putLong(uint32_t i){
+    uint32_t b = i;
+    data[position++] = (uint8_t) (0xFF & (b >> 24));
+    data[position++] = (uint8_t) (0xFF & (b >> 16));
+    data[position++] = (uint8_t) (0xFF & (b >> 8));
+    data[position++] = (uint8_t) (0xFF & b);
+    assert(position <= size);
+}
+
+void Buffer::putLongLong(uint64_t i){
+    uint32_t hi = i >> 32;
+    uint32_t lo = i;
+    putLong(hi);
+    putLong(lo);
+}
+
+void Buffer::putInt8(int8_t i){
+    data[position++] = (uint8_t) i;
+    assert(position <= size);
+}
+
+void Buffer::putInt16(int16_t i){
+    putShort((uint16_t) i);
+}
+
+void Buffer::putInt32(int32_t i){
+    putLong((uint32_t) i);
+}
+
+void Buffer::putInt64(int64_t i){
+    putLongLong((uint64_t) i);
+}
+
+void Buffer::putFloat(float f){
+    union {
+        uint32_t i;
+        float    f;
+    } val;
+
+    val.f = f;
+    putLong (val.i);
+}
+
+void Buffer::putDouble(double f){
+    union {
+        uint64_t i;
+        double   f;
+    } val;
+
+    val.f = f;
+    putLongLong (val.i);
+}
+
+void Buffer::putBin128(const uint8_t* b){
+    memcpy (data + position, b, 16);
+    position += 16;
+}
+
+uint8_t Buffer::getOctet(){ 
+    uint8_t octet = static_cast<uint8_t>(data[position++]);
+    assert(position <= size);
+    return octet;
+}
+
+uint16_t Buffer::getShort(){ 
+    uint16_t hi = (unsigned char) data[position++];
+    hi = hi << 8;
+    hi |= (unsigned char) data[position++];
+    assert(position <= size);
+    return hi;
+}
+
+uint32_t Buffer::getLong(){ 
+    uint32_t a = (unsigned char) data[position++];
+    uint32_t b = (unsigned char) data[position++];
+    uint32_t c = (unsigned char) data[position++];
+    uint32_t d = (unsigned char) data[position++];
+    assert(position <= size);
+    a = a << 24;
+    a |= b << 16;
+    a |= c << 8;
+    a |= d;
+    return a;
+}
+
+uint64_t Buffer::getLongLong(){
+    uint64_t hi = getLong();
+    uint64_t lo = getLong();
+    hi = hi << 32;
+    return hi | lo;
+}
+
+int8_t Buffer::getInt8(){
+    int8_t i = static_cast<int8_t>(data[position++]);
+    assert(position <= size);
+    return i;
+}
+
+int16_t Buffer::getInt16(){
+    return (int16_t) getShort();
+}
+
+int32_t Buffer::getInt32(){
+    return (int32_t) getLong();
+}
+
+int64_t Buffer::getInt64(){
+    return (int64_t) getLongLong();
+}
+
+float Buffer::getFloat(){
+    union {
+        uint32_t i;
+        float    f;
+    } val;
+    val.i = getLong();
+    return val.f;
+}
+
+double Buffer::getDouble(){
+    union {
+        uint64_t i;
+        double   f;
+    } val;
+    val.i = getLongLong();
+    return val.f;
+}
+
+template <>
+uint64_t Buffer::getUInt<1>() {
+    return getOctet();
+}
+
+template <>
+uint64_t Buffer::getUInt<2>() {
+    return getShort();
+}
+
+template <>
+uint64_t Buffer::getUInt<4>() {
+    return getLong();
+}
+
+template <>
+uint64_t Buffer::getUInt<8>() {
+    return getLongLong();
+}
+
+template <>
+void Buffer::putUInt<1>(uint64_t i) {
+    if (std::numeric_limits<uint8_t>::min() <= i && i <= std::numeric_limits<uint8_t>::max()) {
+        putOctet(i);
+        return;
+    }
+    throw Exception(QPID_MSG("Could not encode (" << i << ") as uint8_t."));
+}
+
+template <>
+void Buffer::putUInt<2>(uint64_t i) {
+    if (std::numeric_limits<uint16_t>::min() <= i && i <= std::numeric_limits<uint16_t>::max()) {
+        putShort(i);
+        return;
+    }
+    throw Exception(QPID_MSG("Could not encode (" << i << ") as uint16_t."));
+}
+
+template <>
+void Buffer::putUInt<4>(uint64_t i) {
+    if (std::numeric_limits<uint32_t>::min() <= i && i <= std::numeric_limits<uint32_t>::max()) {
+        putLong(i);
+        return;
+    }
+    throw Exception(QPID_MSG("Could not encode (" << i << ") as uint32_t."));
+}
+
+template <>
+void Buffer::putUInt<8>(uint64_t i) {
+    putLongLong(i);
+}
+
+void Buffer::putShortString(const string& s){
+    size_t slen = s.length();
+    if (slen <= std::numeric_limits<uint8_t>::max()) {
+        uint8_t len = (uint8_t) slen;
+        checkAvailable(slen + 1);
+        putOctet(len);
+        s.copy(data + position, len);
+        position += len;
+        return;
+    }
+    throw Exception(QPID_MSG("Could not encode string of " << slen << " bytes as uint8_t string."));
+}
+
+void Buffer::putMediumString(const string& s){
+    size_t slen = s.length();
+    if (slen <= std::numeric_limits<uint16_t>::max()) {
+        uint16_t len = (uint16_t) slen;
+        checkAvailable(slen + 2);
+        putShort(len);
+        s.copy(data + position, len);
+        position += len;
+        return;
+    }
+    throw Exception(QPID_MSG("Could not encode string of " << slen << " bytes as uint16_t string."));
+}
+
+void Buffer::putLongString(const string& s){
+    uint32_t len = s.length();
+    checkAvailable(len + 4);
+    putLong(len);
+    s.copy(data + position, len);
+    position += len;    
+}
+
+void Buffer::getShortString(string& s){
+    uint8_t len = getOctet();
+    checkAvailable(len);
+    s.assign(data + position, len);
+    position += len;
+}
+
+void Buffer::getMediumString(string& s){
+    uint16_t len = getShort();
+    checkAvailable(len);
+    s.assign(data + position, len);
+    position += len;
+}
+
+void Buffer::getLongString(string& s){
+    uint32_t len = getLong();
+    checkAvailable(len);
+    s.assign(data + position, len);
+    position += len;
+}
+
+void Buffer::getBin128(uint8_t* b){
+    memcpy (b, data + position, 16);
+    position += 16;
+}
+
+void Buffer::putRawData(const string& s){
+    uint32_t len = s.length();
+    checkAvailable(len);
+    s.copy(data + position, len);
+    position += len;    
+}
+
+void Buffer::getRawData(string& s, uint32_t len){
+    checkAvailable(len);
+    s.assign(data + position, len);
+    position += len;
+}
+
+void Buffer::putRawData(const uint8_t* s, size_t len){
+    checkAvailable(len);
+    memcpy(data + position, s, len);
+    position += len;    
+}
+
+void Buffer::getRawData(uint8_t* s, size_t len){
+    checkAvailable(len);
+    memcpy(s, data + position, len);
+    position += len;
+}
+
+void Buffer::dump(std::ostream& out) const {
+    for (uint32_t i = position; i < size; i++)
+    {
+        if (i != position)
+            out << " ";
+        out << boost::format("%02x") % ((unsigned) (uint8_t) data[i]);
+    }
+}
+
+std::ostream& operator<<(std::ostream& out, const Buffer& b){
+    out << "Buffer[";
+    b.dump(out);
+    return out << "]";
+}
+
+}}