1 files changed, 161 insertions, 0 deletions
diff --git a/src/lib/barrier/IKeyState.cpp b/src/lib/barrier/IKeyState.cpp
new file mode 100644
index 0000000..5d1114c
--- /dev/null
+++ b/src/lib/barrier/IKeyState.cpp
@@ -0,0 +1,161 @@
+/*
+ * 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/IKeyState.h"
+#include "base/EventQueue.h"
+
+#include <cstring>
+#include <cstdlib>
+
+//
+// IKeyState
+//
+
+IKeyState::IKeyState(IEventQueue* events)
+{
+}
+
+//
+// IKeyState::KeyInfo
+//
+
+IKeyState::KeyInfo*
+IKeyState::KeyInfo::alloc(KeyID id,
+                KeyModifierMask mask, KeyButton button, SInt32 count)
+{
+    KeyInfo* info           = (KeyInfo*)malloc(sizeof(KeyInfo));
+    info->m_key              = id;
+    info->m_mask             = mask;
+    info->m_button           = button;
+    info->m_count            = count;
+    info->m_screens          = NULL;
+    info->m_screensBuffer[0] = '\0';
+    return info;
+}
+
+IKeyState::KeyInfo*
+IKeyState::KeyInfo::alloc(KeyID id,
+                KeyModifierMask mask, KeyButton button, SInt32 count,
+                const std::set<String>& destinations)
+{
+    String screens = join(destinations);
+
+    // build structure
+    KeyInfo* info  = (KeyInfo*)malloc(sizeof(KeyInfo) + screens.size());
+    info->m_key     = id;
+    info->m_mask    = mask;
+    info->m_button  = button;
+    info->m_count   = count;
+    info->m_screens = info->m_screensBuffer;
+    strcpy(info->m_screensBuffer, screens.c_str());
+    return info;
+}
+
+IKeyState::KeyInfo*
+IKeyState::KeyInfo::alloc(const KeyInfo& x)
+{
+    KeyInfo* info  = (KeyInfo*)malloc(sizeof(KeyInfo) +
+                                        strlen(x.m_screensBuffer));
+    info->m_key     = x.m_key;
+    info->m_mask    = x.m_mask;
+    info->m_button  = x.m_button;
+    info->m_count   = x.m_count;
+    info->m_screens = x.m_screens ? info->m_screensBuffer : NULL;
+    strcpy(info->m_screensBuffer, x.m_screensBuffer);
+    return info;
+}
+
+bool
+IKeyState::KeyInfo::isDefault(const char* screens)
+{
+    return (screens == NULL || screens[0] == '\0');
+}
+
+bool
+IKeyState::KeyInfo::contains(const char* screens, const String& name)
+{
+    // special cases
+    if (isDefault(screens)) {
+        return false;
+    }
+    if (screens[0] == '*') {
+        return true;
+    }
+
+    // search
+    String match;
+    match.reserve(name.size() + 2);
+    match += ":";
+    match += name;
+    match += ":";
+    return (strstr(screens, match.c_str()) != NULL);
+}
+
+bool
+IKeyState::KeyInfo::equal(const KeyInfo* a, const KeyInfo* b)
+{
+    return (a->m_key    == b->m_key &&
+            a->m_mask   == b->m_mask &&
+            a->m_button == b->m_button &&
+            a->m_count  == b->m_count &&
+            strcmp(a->m_screensBuffer, b->m_screensBuffer) == 0);
+}
+
+String
+IKeyState::KeyInfo::join(const std::set<String>& destinations)
+{
+    // collect destinations into a string.  names are surrounded by ':'
+    // which makes searching easy.  the string is empty if there are no
+    // destinations and "*" means all destinations.
+    String screens;
+    for (std::set<String>::const_iterator i = destinations.begin();
+                                i != destinations.end(); ++i) {
+        if (*i == "*") {
+            screens = "*";
+            break;
+        }
+        else {
+            if (screens.empty()) {
+                screens = ":";
+            }
+            screens += *i;
+            screens += ":";
+        }
+    }
+    return screens;
+}
+
+void
+IKeyState::KeyInfo::split(const char* screens, std::set<String>& dst)
+{
+    dst.clear();
+    if (isDefault(screens)) {
+        return;
+    }
+    if (screens[0] == '*') {
+        dst.insert("*");
+        return;
+    }
+
+    const char* i = screens + 1;
+    while (*i != '\0') {
+        const char* j = strchr(i, ':');
+        dst.insert(String(i, j - i));
+        i = j + 1;
+    }
+}