1 files changed, 168 insertions, 0 deletions
diff --git a/src/lib/barrier/IClipboard.cpp b/src/lib/barrier/IClipboard.cpp
new file mode 100644
index 0000000..19b4b56
--- /dev/null
+++ b/src/lib/barrier/IClipboard.cpp
@@ -0,0 +1,168 @@
+/*
+ * barrier -- mouse and keyboard sharing utility
+ * Copyright (C) 2012-2016 Symless Ltd.
+ * Copyright (C) 2004 Chris Schoeneman
+ * 
+ * This package is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * found in the file LICENSE that should have accompanied this file.
+ * 
+ * This package is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "barrier/IClipboard.h"
+#include "common/stdvector.h"
+
+//
+// IClipboard
+//
+
+void
+IClipboard::unmarshall(IClipboard* clipboard, const String& data, Time time)
+{
+    assert(clipboard != NULL);
+
+    const char* index = data.data();
+
+    if (clipboard->open(time)) {
+        // clear existing data
+        clipboard->empty();
+
+        // read the number of formats
+        const UInt32 numFormats = readUInt32(index);
+        index += 4;
+
+        // read each format
+        for (UInt32 i = 0; i < numFormats; ++i) {
+            // get the format id
+            IClipboard::EFormat format =
+                static_cast<IClipboard::EFormat>(readUInt32(index));
+            index += 4;
+
+            // get the size of the format data
+            UInt32 size = readUInt32(index);
+            index += 4;
+
+            // save the data if it's a known format.  if either the client
+            // or server supports more clipboard formats than the other
+            // then one of them will get a format >= kNumFormats here.
+            if (format <IClipboard::kNumFormats) {
+                clipboard->add(format, String(index, size));
+            }
+            index += size;
+        }
+
+        // done
+        clipboard->close();
+    }
+}
+
+String
+IClipboard::marshall(const IClipboard* clipboard)
+{
+    // return data format: 
+    // 4 bytes => number of formats included
+    // 4 bytes => format enum
+    // 4 bytes => clipboard data size n
+    // n bytes => clipboard data
+    // back to the second 4 bytes if there is another format
+    
+    assert(clipboard != NULL);
+
+    String data;
+
+    std::vector<String> formatData;
+    formatData.resize(IClipboard::kNumFormats);
+    // FIXME -- use current time
+    if (clipboard->open(0)) {
+
+        // compute size of marshalled data
+        UInt32 size = 4;
+        UInt32 numFormats = 0;
+        for (UInt32 format = 0; format != IClipboard::kNumFormats; ++format) {
+            if (clipboard->has(static_cast<IClipboard::EFormat>(format))) {
+                ++numFormats;
+                formatData[format] =
+                    clipboard->get(static_cast<IClipboard::EFormat>(format));
+                size += 4 + 4 + (UInt32)formatData[format].size();
+            }
+        }
+
+        // allocate space
+        data.reserve(size);
+
+        // marshall the data
+        writeUInt32(&data, numFormats);
+        for (UInt32 format = 0; format != IClipboard::kNumFormats; ++format) {
+            if (clipboard->has(static_cast<IClipboard::EFormat>(format))) {
+                writeUInt32(&data, format);
+                writeUInt32(&data, (UInt32)formatData[format].size());
+                data += formatData[format];
+            }
+        }
+        clipboard->close();
+    }
+
+    return data;
+}
+
+bool
+IClipboard::copy(IClipboard* dst, const IClipboard* src)
+{
+    assert(dst != NULL);
+    assert(src != NULL);
+
+    return copy(dst, src, src->getTime());
+}
+
+bool
+IClipboard::copy(IClipboard* dst, const IClipboard* src, Time time)
+{
+    assert(dst != NULL);
+    assert(src != NULL);
+
+    bool success = false;
+    if (src->open(time)) {
+        if (dst->open(time)) {
+            if (dst->empty()) {
+                for (SInt32 format = 0;
+                                format != IClipboard::kNumFormats; ++format) {
+                    IClipboard::EFormat eFormat = (IClipboard::EFormat)format;
+                    if (src->has(eFormat)) {
+                        dst->add(eFormat, src->get(eFormat));
+                    }
+                }
+                success = true;
+            }
+            dst->close();
+        }
+        src->close();
+    }
+
+    return success;
+}
+
+UInt32
+IClipboard::readUInt32(const char* buf)
+{
+    const unsigned char* ubuf = reinterpret_cast<const unsigned char*>(buf);
+    return    (static_cast<UInt32>(ubuf[0]) << 24) |
+            (static_cast<UInt32>(ubuf[1]) << 16) |
+            (static_cast<UInt32>(ubuf[2]) <<  8) |
+             static_cast<UInt32>(ubuf[3]);
+}
+
+void
+IClipboard::writeUInt32(String* buf, UInt32 v)
+{
+    *buf += static_cast<UInt8>((v >> 24) & 0xff);
+    *buf += static_cast<UInt8>((v >> 16) & 0xff);
+    *buf += static_cast<UInt8>((v >>  8) & 0xff);
+    *buf += static_cast<UInt8>( v        & 0xff);
+}