Metacat

<%@ page import="java.util.*" %>

<%

/*

 * Copyright 2005 The Apache Software Foundation.

 *

 * 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.

 */

%>

<%!

    /*

     * A library file to produce i18n web applications. This can be easily

     * reused from your jsp(s) - just include and call any methods.

     * @author toshi

     */

    // private variable

    HttpServletRequest _req = null;

    // private variable

    String _strResourceName = null;

    /**

     * Set a HttpServletRequest to a private variable.

     * @param request HttpServletRequest

     */

    void setRequest(HttpServletRequest request) {

        _req = request;

    }

    /**

     * Get the private variable of the HttpServletRequest.

     * @return HttpServletRequest

     */

    HttpServletRequest getRequest() {

        return _req;

    }

    /**

     * Set a resouce base name to a private variable.

     * @param resouce The resouce base name

     */

    void setResouceBase(String resource) {

        _strResourceName = resource;

    }

    /**

     * Get the private variable of the resouce base name.

     * @return resouce The resouce base name

     */

    String getResouceBase() {

        return _strResourceName;

    }

    /**

     * Get a ResourceBundle object.

     * @return a ResourceBundle object

     */

    ResourceBundle getRB() {

        String strLocale = getRequest().getParameter("locale");

        ResourceBundle objRb = null;

        Locale objLcl = null;

        if (strLocale!=null) {

            objLcl=new Locale(strLocale,"");

        } else {

            objLcl=getRequest().getLocale();

        }

        Locale.setDefault(objLcl);

        objRb = ResourceBundle.getBundle(getResouceBase(),objLcl);

        return objRb;

    }

    /**

     * Get a list of locale choice

     * @return a list of supported locales

     */

    String getLocaleChoice() {

        String choice = getMessage("locales");

        StringBuffer buf = new StringBuffer();

        buf.append("<div align=\"right\">\n");

        buf.append(getMessage("language"));

        buf.append(": ");

        StringTokenizer st = new StringTokenizer(choice);

        String locale = null;

        while (st.hasMoreTokens()) {

            locale = st.nextToken();

            buf.append("[<a href=\"?locale="+ locale +"\">"+ locale +"</a>] ");

        }

        buf.append("\n</div>\n");

        return buf.toString();

    }

    /**

     * Get a message from i18n.properties with several arguments.

     * @param key The resource key

     * @return The formatted message

     */

    String getMessage(String key) {

        return getMessage(key, null, null, null, null, null);

    }

    /**

     * Get a message from i18n.properties with several arguments.

     * @param key The resource key

     * @param arg0 The argument to place in variable {0}

     * @return The formatted message

     */

    String getMessage(String key, String arg0) {

        return getMessage(key, arg0, null, null, null, null);

    }

    /**

     * Get a message from i18n.properties with several arguments.

     * @param key The resource key

     * @param arg0 The argument to place in variable {0}

     * @param arg1 The argument to place in variable {1}

     * @return The formatted message

     */

    String getMessage(String key, String arg0, String arg1) {

        return getMessage(key, arg0, arg1, null, null, null);

    }

    /**

     * Get a message from i18n.properties with several arguments.

     * @param key The resource key

     * @param arg0 The argument to place in variable {0}

     * @param arg1 The argument to place in variable {1}

     * @param arg2 The argument to place in variable {2}

     * @return The formatted message

     */

    String getMessage(String key, String arg0, String arg1, String arg2) {

        return getMessage(key, arg0, arg1, arg2, null, null);

    }

    /**

     * Get a message from i18n.properties with several arguments.

     * @param key The resource key

     * @param arg0 The argument to place in variable {0}

     * @param arg1 The argument to place in variable {1}

     * @param arg2 The argument to place in variable {2}

     * @param arg3 The argument to place in variable {3}

     * @return The formatted message

     */

    String getMessage(String key, String arg0, String arg1,

                      String arg2, String arg3) {

        return getMessage(key, arg0, arg1, arg2, arg3, null);

    }

    /**

     * Get a message from i18n.properties with several arguments.

     * @param key The resource key

     * @param arg0 The argument to place in variable {0}

     * @param arg1 The argument to place in variable {1}

     * @param arg2 The argument to place in variable {2}

     * @param arg3 The argument to place in variable {3}

     * @param arg4 The argument to place in variable {4}

     * @return The formatted message

     */

    String getMessage(String key, String arg0, String arg1,

                      String arg2, String arg3, String arg4) {

        String strPattern = getRB().getString(key);

        String [] params = { arg0, arg1, arg2, arg3, arg4 };

        for (int i=0; i<5; i++) {

            if (params[i]!=null) params[i]=replaceAll(params[i],"%20"," ");

        }

        if (arg0!=null) strPattern = replaceAll(strPattern,"{0}",params[0]);

        if (arg1!=null) strPattern = replaceAll(strPattern,"{1}",params[1]);

        if (arg2!=null) strPattern = replaceAll(strPattern,"{2}",params[2]);

        if (arg3!=null) strPattern = replaceAll(strPattern,"{3}",params[3]);

        if (arg4!=null) strPattern = replaceAll(strPattern,"{4}",params[4]);

        return strPattern;

    }

    /**

     * Get a replaced string by the specified message.

     * @param source  The original message

     * @param pattern The key message for replacing

     * @param replace The message to place in the key variable - 'pattern'

     * @return The replaced message

     */

    String replaceAll(String source, String pattern, String replace)

    {

        int i=0;

        boolean ret = false;

        StringBuffer buf = new StringBuffer();

        int lenSource  = source.length();

        int lenPattern = pattern.length();

        for (i=0; i<lenSource; i++) {

            ret = source.regionMatches(i, pattern, 0, lenPattern);

            if (ret) {

                buf.append(source.substring(0,i));

                buf.append(replace);

                buf.append(source.substring(i+lenPattern));

                source = replaceAll(buf.toString(), pattern, replace);

                break;

            }

        }

        return source;

    }

%>