1 files changed, 153 insertions, 0 deletions
diff --git a/Source/WebKit2/UIProcess/Launcher/mac/EnvironmentVariables.cpp b/Source/WebKit2/UIProcess/Launcher/mac/EnvironmentVariables.cpp
new file mode 100644
index 000000000..72979f8f7
--- /dev/null
+++ b/Source/WebKit2/UIProcess/Launcher/mac/EnvironmentVariables.cpp
@@ -0,0 +1,153 @@
+/*
+ * Copyright (C) 2010, 2011 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
+ */
+
+#include "config.h"
+#include "EnvironmentVariables.h"
+
+#include <crt_externs.h>
+
+namespace WebKit {
+
+EnvironmentVariables::EnvironmentVariables()
+    : m_environmentPointer(*_NSGetEnviron())
+{
+}
+
+EnvironmentVariables::~EnvironmentVariables()
+{
+    size_t size = m_allocatedStrings.size();
+    for (size_t i = 0; i < size; ++i)
+        fastFree(m_allocatedStrings[i]);
+}
+
+void EnvironmentVariables::set(const char* name, const char* value)
+{
+    // Check if we need to copy the environment.
+    if (m_environmentPointer == *_NSGetEnviron())
+        copyEnvironmentVariables();
+
+    // Allocate a string for the name and value.
+    const char* nameAndValue = createStringForVariable(name, value);
+
+    for (size_t i = 0; i < m_environmentVariables.size() - 1; ++i) {
+        if (valueIfVariableHasName(m_environmentVariables[i], name)) {
+            // Just replace the environment variable.
+            m_environmentVariables[i] = const_cast<char*>(nameAndValue);
+            return;
+        }
+    }
+
+    // Append the new string.
+    ASSERT(!m_environmentVariables.last());
+    m_environmentVariables.last() = const_cast<char*>(nameAndValue);
+    m_environmentVariables.append(static_cast<char*>(0));
+
+    m_environmentPointer = m_environmentVariables.data();
+}
+
+const char* EnvironmentVariables::get(const char* name) const
+{
+    for (size_t i = 0; m_environmentPointer[i]; ++i) {
+        if (const char* value = valueIfVariableHasName(m_environmentPointer[i], name))
+            return value;
+    }
+    return 0;
+}
+
+void EnvironmentVariables::appendValue(const char* name, const char* value, char separator)
+{
+    const char* existingValue = get(name);
+    if (!existingValue) {
+        set(name, value);
+        return;
+    }
+
+    Vector<char, 128> newValue;
+    newValue.append(existingValue, strlen(existingValue));
+    newValue.append(separator);
+    newValue.append(value, strlen(value) + 1);
+
+    set(name, newValue.data());
+}
+
+const char* EnvironmentVariables::valueIfVariableHasName(const char* environmentVariable, const char* name) const
+{
+    // Find the environment variable name.
+    const char* equalsLocation = strchr(environmentVariable, '=');
+    ASSERT(equalsLocation);
+
+    size_t nameLength = equalsLocation - environmentVariable;
+    if (strlen(name) != nameLength)
+        return 0;
+    if (memcmp(environmentVariable, name, nameLength))
+        return 0;
+
+    return equalsLocation + 1;
+}
+
+const char* EnvironmentVariables::createStringForVariable(const char* name, const char* value)
+{
+    int nameLength = strlen(name);
+    int valueLength = strlen(value);
+
+    // Allocate enough room to hold 'name=value' and the null character.
+    char* string = static_cast<char*>(fastMalloc(nameLength + 1 + valueLength + 1));
+    memcpy(string, name, nameLength);
+    string[nameLength] = '=';
+    memcpy(string + nameLength + 1, value, valueLength);
+    string[nameLength + 1 + valueLength] = '\0';
+
+    m_allocatedStrings.append(string);
+
+    return string;
+}
+
+void EnvironmentVariables::copyEnvironmentVariables()
+{
+    for (size_t i = 0; (*_NSGetEnviron())[i]; i++)
+        m_environmentVariables.append((*_NSGetEnviron())[i]);
+
+    // Null-terminate the array.
+    m_environmentVariables.append(static_cast<char*>(0));
+
+    // Update the environment pointer.
+    m_environmentPointer = m_environmentVariables.data();
+}
+
+#if !defined(BUILDING_ON_SNOW_LEOPARD)
+
+const char* EnvironmentVariables::preexistingProcessServiceNameKey()
+{
+    return "WEBKIT_PREEXISTING_PROCESS_SERVICE_NAME";
+}
+
+const char* EnvironmentVariables::preexistingProcessTypeKey()
+{
+    return "WEBKIT_PREEXISTING_PROCESS_TYPE";
+}
+
+#endif // !defined(BUILDING_ON_SNOW_LEOPARD)
+
+} // namespace WebKit