1 files changed, 169 insertions, 0 deletions
diff --git a/src/com/android/browser/search/SearchEngineInfo.java b/src/com/android/browser/search/SearchEngineInfo.java
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+++ b/src/com/android/browser/search/SearchEngineInfo.java
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+/*
+ * Copyright (C) 2010 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 com.android.browser.search;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.text.TextUtils;
+import android.util.Log;
+
+import java.net.URLEncoder;
+import java.util.Arrays;
+import java.util.Locale;
+
+/**
+ * Loads and holds data for a given web search engine.
+ */
+public class SearchEngineInfo {
+
+    private static String TAG = "SearchEngineInfo";
+
+    // The fields of a search engine data array, defined in the same order as they appear in the
+    // all_search_engines.xml file.
+    // If you are adding/removing to this list, remember to update NUM_FIELDS below.
+    private static final int FIELD_LABEL = 0;
+    private static final int FIELD_KEYWORD = 1;
+    private static final int FIELD_FAVICON_URI = 2;
+    private static final int FIELD_SEARCH_URI = 3;
+    private static final int FIELD_ENCODING = 4;
+    private static final int FIELD_SUGGEST_URI = 5;
+    private static final int NUM_FIELDS = 6;
+
+    // The OpenSearch URI template parameters that we support.
+    private static final String PARAMETER_LANGUAGE = "{language}";
+    private static final String PARAMETER_SEARCH_TERMS = "{searchTerms}";
+    private static final String PARAMETER_INPUT_ENCODING = "{inputEncoding}";
+
+    private final String mName;
+
+    // The array of strings defining this search engine. The array values are in the same order as
+    // the above enumeration definition.
+    private final String[] mSearchEngineData;
+
+    /**
+     * @throws IllegalArgumentException If the name does not refer to a valid search engine
+     */
+    public SearchEngineInfo(Context context, String name) throws IllegalArgumentException {
+        mName = name;
+
+        Resources res = context.getResources();
+        int id_data = res.getIdentifier(name, "array", context.getPackageName());
+        mSearchEngineData = res.getStringArray(id_data);
+
+        if (mSearchEngineData == null) {
+            throw new IllegalArgumentException("No data found for " + name);
+        }
+        if (mSearchEngineData.length != NUM_FIELDS) {
+                throw new IllegalArgumentException(
+                        name + " has invalid number of fields - " + mSearchEngineData.length);
+        }
+        if (TextUtils.isEmpty(mSearchEngineData[FIELD_SEARCH_URI])) {
+            throw new IllegalArgumentException(name + " has an empty search URI");
+        }
+
+        // Add the current language/country information to the URIs.
+        Locale locale = context.getResources().getConfiguration().locale;
+        StringBuilder language = new StringBuilder(locale.getLanguage());
+        if (!TextUtils.isEmpty(locale.getCountry())) {
+            language.append('-');
+            language.append(locale.getCountry());
+        }
+
+        String language_str = language.toString();
+        mSearchEngineData[FIELD_SEARCH_URI] =
+                mSearchEngineData[FIELD_SEARCH_URI].replace(PARAMETER_LANGUAGE, language_str);
+        mSearchEngineData[FIELD_SUGGEST_URI] =
+                mSearchEngineData[FIELD_SUGGEST_URI].replace(PARAMETER_LANGUAGE, language_str);
+
+        // Default to UTF-8 if not specified.
+        String enc = mSearchEngineData[FIELD_ENCODING];
+        if (TextUtils.isEmpty(enc)) {
+            enc = "UTF-8";
+            mSearchEngineData[FIELD_ENCODING] = enc;
+        }
+
+        // Add the input encoding method to the URI.
+        mSearchEngineData[FIELD_SEARCH_URI] =
+                mSearchEngineData[FIELD_SEARCH_URI].replace(PARAMETER_INPUT_ENCODING, enc);
+        mSearchEngineData[FIELD_SUGGEST_URI] =
+                mSearchEngineData[FIELD_SUGGEST_URI].replace(PARAMETER_INPUT_ENCODING, enc);
+    }
+
+    public String getName() {
+        return mName;
+    }
+
+    public String getLabel() {
+        return mSearchEngineData[FIELD_LABEL];
+    }
+
+    /**
+     * Returns the URI for launching a web search with the given query (or null if there was no
+     * data available for this search engine).
+     */
+    public String getSearchUriForQuery(String query) {
+        return getFormattedUri(searchUri(), query);
+    }
+
+    /**
+     * Returns the URI for retrieving web search suggestions for the given query (or null if there
+     * was no data available for this search engine).
+     */
+    public String getSuggestUriForQuery(String query) {
+        return getFormattedUri(suggestUri(), query);
+    }
+
+    public boolean supportsSuggestions() {
+        return !TextUtils.isEmpty(suggestUri());
+    }
+
+    public String faviconUri() {
+        return mSearchEngineData[FIELD_FAVICON_URI];
+    }
+
+    private String suggestUri() {
+        return mSearchEngineData[FIELD_SUGGEST_URI];
+    }
+
+    private String searchUri() {
+        return mSearchEngineData[FIELD_SEARCH_URI];
+    }
+
+    /**
+     * Formats a launchable uri out of the template uri by replacing the template parameters with
+     * actual values.
+     */
+    private String getFormattedUri(String templateUri, String query) {
+        if (TextUtils.isEmpty(templateUri)) {
+            return null;
+        }
+
+        // Encode the query terms in the requested encoding (and fallback to UTF-8 if not).
+        String enc = mSearchEngineData[FIELD_ENCODING];
+        try {
+            return templateUri.replace(PARAMETER_SEARCH_TERMS, URLEncoder.encode(query, enc));
+        } catch (java.io.UnsupportedEncodingException e) {
+            Log.e(TAG, "Exception occured when encoding query " + query + " to " + enc);
+            return null;
+        }
+    }
+
+    @Override
+    public String toString() {
+        return "SearchEngineInfo{" + Arrays.toString(mSearchEngineData) + "}";
+    }
+
+}