Delete general sounding "CharArrayBuffers" class.

Move the code to the only point of use. Preparatory work for
decoupling apache-http from the frameworks.

Change-Id: Ieee54bb725cbac19d0c7513867635df6fbcf2b49

3 files changed, 57 insertions, 94 deletions

diff --git a/core/java/android/net/http/CharArrayBuffers.java b/core/java/android/net/http/CharArrayBuffers.java
deleted file mode 100644
index 77d45f6..0000000
--- a/core/java/android/net/http/CharArrayBuffers.java
+++ /dev/null
@@ -1,89 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- *
- * Licensed 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.
- */
-
-package android.net.http;
-
-import org.apache.http.util.CharArrayBuffer;
-import org.apache.http.protocol.HTTP;
-
-/**
- * Utility methods for working on CharArrayBuffers.
- * 
- * {@hide}
- */
-class CharArrayBuffers {
-
-    static final char uppercaseAddon = 'a' - 'A';
-
-    /**
-     * Returns true if the buffer contains the given string. Ignores leading
-     * whitespace and case.
-     *
-     * @param buffer to search
-     * @param beginIndex index at which we should start
-     * @param str to search for
-     */
-    static boolean containsIgnoreCaseTrimmed(CharArrayBuffer buffer,
-            int beginIndex, final String str) {
-        int len = buffer.length();
-        char[] chars = buffer.buffer();
-        while (beginIndex < len && HTTP.isWhitespace(chars[beginIndex])) {
-            beginIndex++;
-        }
-        int size = str.length();
-        boolean ok = len >= beginIndex + size;
-        for (int j=0; ok && (j<size); j++) {
-            char a = chars[beginIndex+j];
-            char b = str.charAt(j);
-            if (a != b) {
-                a = toLower(a);
-                b = toLower(b);
-                ok = a == b;
-            }
-        }
-        return ok;
-    }
-
-    /**
-     * Returns index of first occurence ch. Lower cases characters leading up
-     * to first occurrence of ch.
-     */
-    static int setLowercaseIndexOf(CharArrayBuffer buffer, final int ch) {
-
-        int beginIndex = 0;
-        int endIndex = buffer.length();
-        char[] chars = buffer.buffer();
-
-        for (int i = beginIndex; i < endIndex; i++) {
-            char current = chars[i];
-            if (current == ch) {
-                return i;
-            } else if (current >= 'A' && current <= 'Z'){
-                // make lower case
-                current += uppercaseAddon;
-                chars[i] = current;
-            }
-        }
-        return -1;
-    }
-
-    private static char toLower(char c) {
-        if (c >= 'A' && c <= 'Z'){
-            c += uppercaseAddon;
-        }
-        return c;
-    }
-}
diff --git a/core/java/android/net/http/Headers.java b/core/java/android/net/http/Headers.java
index 657e071..0f8b105 100644
--- a/core/java/android/net/http/Headers.java
+++ b/core/java/android/net/http/Headers.java
@@ -158,7 +158,7 @@ public final class Headers {
     }
 
     public void parseHeader(CharArrayBuffer buffer) {
-        int pos = CharArrayBuffers.setLowercaseIndexOf(buffer, ':');
+        int pos = setLowercaseIndexOf(buffer, ':');
         if (pos == -1) {
             return;
         }
@@ -459,12 +459,63 @@ public final class Headers {
     }
 
     private void setConnectionType(CharArrayBuffer buffer, int pos) {
-        if (CharArrayBuffers.containsIgnoreCaseTrimmed(
-                buffer, pos, HTTP.CONN_CLOSE)) {
+        if (containsIgnoreCaseTrimmed(buffer, pos, HTTP.CONN_CLOSE)) {
             connectionType = CONN_CLOSE;
-        } else if (CharArrayBuffers.containsIgnoreCaseTrimmed(
+        } else if (containsIgnoreCaseTrimmed(
                 buffer, pos, HTTP.CONN_KEEP_ALIVE)) {
             connectionType = CONN_KEEP_ALIVE;
         }
     }
+
+
+    /**
+     * Returns true if the buffer contains the given string. Ignores leading
+     * whitespace and case.
+     *
+     * @param buffer to search
+     * @param beginIndex index at which we should start
+     * @param str to search for
+     */
+    static boolean containsIgnoreCaseTrimmed(CharArrayBuffer buffer,
+            int beginIndex, final String str) {
+        int len = buffer.length();
+        char[] chars = buffer.buffer();
+        while (beginIndex < len && HTTP.isWhitespace(chars[beginIndex])) {
+            beginIndex++;
+        }
+        int size = str.length();
+        boolean ok = len >= (beginIndex + size);
+        for (int j=0; ok && (j < size); j++) {
+            char a = chars[beginIndex + j];
+            char b = str.charAt(j);
+            if (a != b) {
+                a = Character.toLowerCase(a);
+                b = Character.toLowerCase(b);
+                ok = a == b;
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Returns index of first occurence ch. Lower cases characters leading up
+     * to first occurrence of ch.
+     */
+    static int setLowercaseIndexOf(CharArrayBuffer buffer, final int ch) {
+
+        int beginIndex = 0;
+        int endIndex = buffer.length();
+        char[] chars = buffer.buffer();
+
+        for (int i = beginIndex; i < endIndex; i++) {
+            char current = chars[i];
+            if (current == ch) {
+                return i;
+            } else {
+                chars[i] = Character.toLowerCase(current);
+            }
+        }
+        return -1;
+    }
 }
diff --git a/core/java/android/net/http/X509TrustManagerExtensions.java b/core/java/android/net/http/X509TrustManagerExtensions.java
index 6a63a0c..bb36c20 100644
--- a/core/java/android/net/http/X509TrustManagerExtensions.java
+++ b/core/java/android/net/http/X509TrustManagerExtensions.java
@@ -36,7 +36,7 @@ import javax.net.ssl.X509TrustManager;
  */
 public class X509TrustManagerExtensions {
 
-    TrustManagerImpl mDelegate;
+    final TrustManagerImpl mDelegate;
 
     /**
      * Constructs a new X509TrustManagerExtensions wrapper.
@@ -48,6 +48,7 @@ public class X509TrustManagerExtensions {
         if (tm instanceof TrustManagerImpl) {
             mDelegate = (TrustManagerImpl) tm;
         } else {
+            mDelegate = null;
             throw new IllegalArgumentException("tm is an instance of " + tm.getClass().getName() +
                     " which is not a supported type of X509TrustManager");
         }