| /* |
| * Copyright (c) 2003 The Visigoth Software Society. 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. |
| * |
| * 3. The end-user documentation included with the redistribution, if |
| * any, must include the following acknowledgement: |
| * "This product includes software developed by the |
| * Visigoth Software Society (http://www.visigoths.org/)." |
| * Alternately, this acknowledgement may appear in the software itself, |
| * if and wherever such third-party acknowledgements normally appear. |
| * |
| * 4. Neither the name "FreeMarker", "Visigoth", nor any of the names of the |
| * project contributors may be used to endorse or promote products derived |
| * from this software without prior written permission. For written |
| * permission, please contact visigoths@visigoths.org. |
| * |
| * 5. Products derived from this software may not be called "FreeMarker" or "Visigoth" |
| * nor may "FreeMarker" or "Visigoth" appear in their names |
| * without prior written permission of the Visigoth Software Society. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 THE VISIGOTH SOFTWARE SOCIETY 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. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Visigoth Software Society. For more |
| * information on the Visigoth Software Society, please see |
| * http://www.visigoths.org/ |
| */ |
| |
| package freemarker.core; |
| |
| import java.io.IOException; |
| |
| import freemarker.cache.TemplateCache; |
| import freemarker.template.Template; |
| import freemarker.template.TemplateException; |
| import freemarker.template.TemplateModel; |
| import freemarker.template.TemplateScalarModel; |
| import freemarker.template.utility.StringUtil; |
| import freemarker.template.utility.UndeclaredThrowableException; |
| |
| |
| /** |
| * An instruction that gets another template |
| * and processes it within the current template. |
| */ |
| final class Include extends TemplateElement { |
| |
| private Expression templateName, encodingExp, parseExp; |
| private String encoding; |
| private boolean parse; |
| private final String templatePath; |
| |
| /** |
| * @param template the template that this <tt>Include</tt> is a part of. |
| * @param includedTemplateName the name of the template to be included. |
| * @param encodingExp the encoding to be used or null, if it's a default. |
| * @param parseExp whether the template should be parsed (or is raw text) |
| */ |
| Include(Template template, |
| Expression includedTemplateName, |
| Expression encodingExp, |
| Expression parseExp) throws ParseException |
| { |
| String templatePath1 = template.getName(); |
| if (templatePath1 == null) { |
| // This can be the case if the template wasn't created throuh a TemplateLoader. |
| templatePath1 = ""; |
| } |
| int lastSlash = templatePath1.lastIndexOf('/'); |
| templatePath = lastSlash == -1 ? "" : templatePath1.substring(0, lastSlash + 1); |
| this.templateName = includedTemplateName; |
| if (encodingExp instanceof StringLiteral) { |
| encoding = encodingExp.toString(); |
| encoding = encoding.substring(1, encoding.length() -1); |
| } |
| else { |
| this.encodingExp = encodingExp; |
| } |
| if(parseExp == null) { |
| parse = true; |
| } |
| else if(parseExp.isLiteral()) { |
| try { |
| if (parseExp instanceof StringLiteral) { |
| parse = StringUtil.getYesNo(parseExp.evalAndCoerceToString(null)); |
| } |
| else { |
| try { |
| parse = parseExp.evalToBoolean(null); |
| } |
| catch(NonBooleanException e) { |
| throw new ParseException("Expected a boolean or string as the value of the parse attribute", parseExp); |
| } |
| } |
| } |
| catch(TemplateException e) { |
| // evaluation of literals must not throw a TemplateException |
| throw new UndeclaredThrowableException(e); |
| } |
| } |
| else { |
| this.parseExp = parseExp; |
| } |
| } |
| |
| void accept(Environment env) throws TemplateException, IOException { |
| String templateNameString = templateName.evalAndCoerceToString(env); |
| String enc = encoding; |
| if (encoding == null && encodingExp != null) { |
| enc = encodingExp.evalAndCoerceToString(env); |
| } |
| |
| boolean parse = this.parse; |
| if (parseExp != null) { |
| TemplateModel tm = parseExp.eval(env); |
| if(tm == null) { |
| if(env.isClassicCompatible()) { |
| parse = false; |
| } |
| else { |
| parseExp.assertNonNull(tm, env); |
| } |
| } |
| if (tm instanceof TemplateScalarModel) { |
| parse = getYesNo(EvalUtil.modelToString((TemplateScalarModel)tm, parseExp, env)); |
| } |
| else { |
| parse = parseExp.evalToBoolean(env); |
| } |
| } |
| |
| Template includedTemplate; |
| try { |
| templateNameString = TemplateCache.getFullTemplatePath(env, templatePath, templateNameString); |
| includedTemplate = env.getTemplateForInclusion(templateNameString, enc, parse); |
| } |
| catch (ParseException pe) { |
| throw new _MiscTemplateException(pe, env, new Object[] { |
| "Error parsing included template ", |
| new _DelayedJQuote(templateNameString), ":\n", |
| new _DelayedGetMessage(pe) }); |
| } |
| catch (IOException ioe) { |
| throw new _MiscTemplateException(ioe, env, new Object[] { |
| "Error reading included file ", new _DelayedJQuote(templateNameString), ":\n", |
| new _DelayedGetMessage(ioe) }); |
| } |
| env.include(includedTemplate); |
| } |
| |
| protected String dump(boolean canonical) { |
| StringBuffer buf = new StringBuffer(); |
| if (canonical) buf.append('<'); |
| buf.append(getNodeTypeSymbol()); |
| buf.append(' '); |
| buf.append(templateName.getCanonicalForm()); |
| if (encoding != null) { |
| buf.append(" encoding=\""); |
| buf.append(encodingExp.getCanonicalForm()); |
| buf.append('"'); |
| } |
| if(parseExp != null) { |
| buf.append(" parse=" + parseExp.getCanonicalForm()); |
| } else if (!parse) { |
| buf.append(" parse=false"); |
| } |
| if (canonical) buf.append("/>"); |
| return buf.toString(); |
| } |
| |
| String getNodeTypeSymbol() { |
| return "#include"; |
| } |
| |
| private boolean getYesNo(String s) throws TemplateException { |
| try { |
| return StringUtil.getYesNo(s); |
| } |
| catch (IllegalArgumentException iae) { |
| throw new _MiscTemplateException(parseExp, new Object[] { |
| "Value of include parse parameter must be boolean (or one of these strings: " |
| + "\"n\", \"no\", \"f\", \"false\", \"y\", \"yes\", \"t\", \"true\"), but it was ", |
| new _DelayedJQuote(s), "." }); |
| } |
| } |
| |
| int getParameterCount() { |
| return 3; |
| } |
| |
| Object getParameterValue(int idx) { |
| switch (idx) { |
| case 0: return templateName; |
| case 1: return new Boolean(parse); |
| case 2: return encoding; |
| default: throw new IndexOutOfBoundsException(); |
| } |
| } |
| |
| ParameterRole getParameterRole(int idx) { |
| switch (idx) { |
| case 0: return ParameterRole.TEMPLATE_NAME; |
| case 1: return ParameterRole.PARSE_PARAMETER; |
| case 2: return ParameterRole.ENCODING_PARAMETER; |
| default: throw new IndexOutOfBoundsException(); |
| } |
| } |
| |
| /* |
| boolean heedsOpeningWhitespace() { |
| return true; |
| } |
| |
| boolean heedsTrailingWhitespace() { |
| return true; |
| } |
| */ |
| } |