1 files changed, 202 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/xpcom/threads/nsEnvironment.cpp b/src/libs/xpcom18a4/xpcom/threads/nsEnvironment.cpp
new file mode 100644
index 00000000..139b24a6
--- /dev/null
+++ b/src/libs/xpcom18a4/xpcom/threads/nsEnvironment.cpp
@@ -0,0 +1,202 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (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.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is mozilla embedding code.
+ *
+ * The Initial Developers of the Original Code are
+ * Benjamin Smedberg <bsmedberg@covad.net> and 
+ * Roland Mainz <roland.mainz@informatik.med.uni-giessen.de>.
+ *
+ * Portions created by the Initial Developer are Copyright (C) 2003/2004
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#include "nsEnvironment.h"
+#include "prenv.h"
+#include "prprf.h"
+#include "nsAutoLock.h"
+#include "nsBaseHashtable.h"
+#include "nsHashKeys.h"
+#include "nsPromiseFlatString.h"
+#include "nsDependentString.h"
+#include "nsNativeCharsetUtils.h"
+
+NS_IMPL_THREADSAFE_ISUPPORTS1(nsEnvironment, nsIEnvironment)
+
+NS_METHOD
+nsEnvironment::Create(nsISupports *aOuter, REFNSIID aIID,
+                      void **aResult)
+{
+    nsresult rv;
+    *aResult = nsnull;
+
+    if (aOuter != nsnull) {
+        return NS_ERROR_NO_AGGREGATION;
+    }
+
+    nsEnvironment* obj = new nsEnvironment();
+    if (!obj) {
+        return NS_ERROR_OUT_OF_MEMORY;
+    }
+
+    obj->mLock = PR_NewLock();
+    if (!obj->mLock) {
+        delete obj;
+        return NS_ERROR_OUT_OF_MEMORY;
+    }
+
+    rv = obj->QueryInterface(aIID, aResult);
+    if (NS_FAILED(rv)) {
+      delete obj;
+    }
+    return rv;
+}
+
+nsEnvironment::~nsEnvironment()
+{
+    if (mLock)
+        PR_DestroyLock(mLock);
+}
+
+NS_IMETHODIMP
+nsEnvironment::Exists(const nsAString& aName, PRBool *aOutValue)
+{
+    nsCAutoString nativeName;
+    nsresult rv = NS_CopyUnicodeToNative(aName, nativeName);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsCAutoString nativeVal;
+#if defined(XP_UNIX)
+    /* For Unix/Linux platforms we follow the Unix definition:
+     * An environment variable exists when |getenv()| returns a non-NULL value.
+     * An environment variable does not exist when |getenv()| returns NULL.
+     */
+    const char *value = PR_GetEnv(nativeName.get());
+    
+    *aOutValue = (value)?(PR_TRUE):(PR_FALSE);
+#else
+    /* For non-Unix/Linux platforms we have to fall back to a 
+     * "portable" definition (which is incorrect for Unix/Linux!!!!)
+     * which simply checks whether the string returned by |Get()| is empty
+     * or not.
+     */
+    nsAutoString value;
+    Get(aName, value);
+    *aOutValue = (value.IsEmpty())?(PR_FALSE):(PR_TRUE);
+#endif /* XP_UNIX */
+
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsEnvironment::Get(const nsAString& aName, nsAString& aOutValue)
+{
+    nsCAutoString nativeName;
+    nsresult rv = NS_CopyUnicodeToNative(aName, nativeName);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsCAutoString nativeVal;
+    const char *value = PR_GetEnv(nativeName.get());
+    if (value) {
+        rv = NS_CopyNativeToUnicode(nsDependentCString(value), aOutValue);
+    } else {
+        aOutValue.Truncate();
+        rv = NS_OK;
+    }
+
+    return rv;
+}
+
+/* Environment strings must have static duration; We're gonna leak all of this
+ * at shutdown: this is by design, caused how Unix/Linux implement environment
+ * vars. 
+ */
+
+typedef nsBaseHashtableET<nsCStringHashKey,char*> EnvEntryType;
+typedef nsTHashtable<EnvEntryType> EnvHashType;
+
+static EnvHashType *gEnvHash = nsnull;
+
+static PRBool
+EnsureEnvHash()
+{
+    if (gEnvHash)
+        return PR_TRUE;
+
+    gEnvHash = new EnvHashType;
+    if (!gEnvHash)
+        return PR_FALSE;
+
+    if(gEnvHash->Init())
+        return PR_TRUE;
+
+    delete gEnvHash;
+    gEnvHash = nsnull;
+    return PR_FALSE;
+}
+
+NS_IMETHODIMP
+nsEnvironment::Set(const nsAString& aName, const nsAString& aValue)
+{
+    nsCAutoString nativeName;
+    nsCAutoString nativeVal;
+
+    nsresult rv = NS_CopyUnicodeToNative(aName, nativeName);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = NS_CopyUnicodeToNative(aValue, nativeVal);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsAutoLock lock(mLock); // autolock unlocks automagically
+
+    if (!EnsureEnvHash()){
+        return NS_ERROR_UNEXPECTED;
+    }
+
+    EnvEntryType* entry = gEnvHash->PutEntry(nativeName);
+    if (!entry) {
+        return NS_ERROR_OUT_OF_MEMORY;
+    }
+    
+    char* newData = PR_smprintf("%s=%s",
+                                nativeName.get(),
+                                nativeVal.get());
+    if (!newData) {
+        return NS_ERROR_OUT_OF_MEMORY;
+    } 
+    
+    PR_SetEnv(newData);
+    if (entry->mData) {
+        PR_smprintf_free(entry->mData);
+    }
+    entry->mData = newData;
+    return NS_OK;
+}
+
+