From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- libjava/classpath/gnu/xml/transform/SortKey.java | 239 +++++++++++++++++++++++ 1 file changed, 239 insertions(+) create mode 100644 libjava/classpath/gnu/xml/transform/SortKey.java (limited to 'libjava/classpath/gnu/xml/transform/SortKey.java') diff --git a/libjava/classpath/gnu/xml/transform/SortKey.java b/libjava/classpath/gnu/xml/transform/SortKey.java new file mode 100644 index 000000000..dd57df986 --- /dev/null +++ b/libjava/classpath/gnu/xml/transform/SortKey.java @@ -0,0 +1,239 @@ +/* SortKey.java -- + Copyright (C) 2004 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package gnu.xml.transform; + +import javax.xml.namespace.QName; +import javax.xml.transform.TransformerException; +import org.w3c.dom.Document; +import org.w3c.dom.DocumentFragment; +import org.w3c.dom.Node; +import gnu.xml.xpath.Expr; + +/** + *

+ * An XSL sort key, as specified by section 10 of the XSL + * Transformations specification. This takes the form: + *

+ * 
+ * <xsl:sort
+ * select = string-expression
+ * lang = { nmtoken }
+ * data-type = { "text" | "number" | qname-but-not-ncname }
+ * order = { "ascending" | "descending" }
+ * case-order = { "upper-first" | "lower-first" } /&rt;
+ *
+ *

+ * Note that all but the selection expression are optional, + * and so may be {@code null}. + *

+ * + * @author Chris Burdess + */ +final class SortKey +{ + + static final int DEFAULT = 0; + static final int UPPER_FIRST = 1; + static final int LOWER_FIRST = 2; + + final Expr select; + final TemplateNode langTemplate; + final TemplateNode dataTypeTemplate; + final TemplateNode orderTemplate; + final TemplateNode caseOrderTemplate; + + transient String lang; + transient String dataType; + transient boolean descending; + transient int caseOrder; + + /** + * Constructs a new {@link SortKey} to represent an <xsl:sort&rt; + * tag. + * + * @param select the XPath expression which selects the nodes to be sorted. + * @param lang the language of the sort keys or {@code null} if unspecified. + * @param dataType the data type of the strings. May be "string", "number", + * a QName or {@code null} if unspecified. + * @param order the ordering of the nodes, which may be "ascending", "descending" + * or {@code null} if unspecified. + * @param caseOrder the treatment of case when the data type is a string. This + * may be "upper-first", "lower-first" or {@code null} if + * unspecified. + */ + SortKey(Expr select, TemplateNode lang, TemplateNode dataType, + TemplateNode order, TemplateNode caseOrder) + { + this.select = select; + this.langTemplate = lang; + this.dataTypeTemplate = dataType; + this.orderTemplate = order; + this.caseOrderTemplate = caseOrder; + } + + String key(Node node) + { + Object ret = select.evaluate(node, 1, 1); + if (ret instanceof String) + { + return (String) ret; + } + else + { + return Expr._string(node, ret); + } + } + + /** + * Prepare for a sort. + * This sets all transient variables from their AVTs. + */ + void init(Stylesheet stylesheet, QName mode, + Node context, int pos, int len, + Node parent, Node nextSibling) + throws TransformerException + { + Document doc = (context instanceof Document) ? (Document) context : + context.getOwnerDocument(); + if (langTemplate == null) + { + lang = null; + } + else + { + DocumentFragment fragment = doc.createDocumentFragment(); + langTemplate.apply(stylesheet, mode, context, pos, len, + fragment, null); + lang = Expr.stringValue(fragment); + } + if (dataTypeTemplate == null) + { + dataType = "text"; + } + else + { + DocumentFragment fragment = doc.createDocumentFragment(); + dataTypeTemplate.apply(stylesheet, mode, context, pos, len, + fragment, null); + dataType = Expr.stringValue(fragment); + } + if (orderTemplate == null) + { + descending = false; + } + else + { + DocumentFragment fragment = doc.createDocumentFragment(); + orderTemplate.apply(stylesheet, mode, context, pos, len, + fragment, null); + String order = Expr.stringValue(fragment); + descending = "descending".equals(order); + } + if (caseOrderTemplate == null) + { + caseOrder = DEFAULT; + } + else + { + DocumentFragment fragment = doc.createDocumentFragment(); + caseOrderTemplate.apply(stylesheet, mode, context, pos, len, + fragment, null); + String co = Expr.stringValue(fragment); + caseOrder = "upper-first".equals(co) ? UPPER_FIRST : + "lower-first".equals(co) ? LOWER_FIRST : + DEFAULT; + } + } + + boolean references(QName var) + { + if (select != null && select.references(var)) + { + return true; + } + if (langTemplate != null && langTemplate.references(var)) + { + return true; + } + if (dataTypeTemplate != null && dataTypeTemplate.references(var)) + { + return true; + } + if (orderTemplate != null && orderTemplate.references(var)) + { + return true; + } + if (caseOrderTemplate != null && caseOrderTemplate.references(var)) + { + return true; + } + return false; + } + + /** + * Provides a clone of this {@link SortKey}, using the given + * stylesheet as a context. + * + * @param stylesheet the stylesheet which provides context for the cloning. + * @return a clone of this instance. + */ + SortKey clone(Stylesheet stylesheet) + { + return new SortKey(select.clone(stylesheet), + langTemplate == null ? null : cloneAttributeValueTemplate(langTemplate, stylesheet), + dataTypeTemplate == null ? null : cloneAttributeValueTemplate(dataTypeTemplate, stylesheet), + orderTemplate == null ? null : cloneAttributeValueTemplate(orderTemplate, stylesheet), + caseOrderTemplate == null ? null : cloneAttributeValueTemplate(caseOrderTemplate, stylesheet)); + } + + /** + * Clones an attribute value template as created by + * {@link Stylesheet#parseAttributeValueTemplate(String, Node)}. + * The node may either by a literal node or an xsl:value-of expression. + * + * @param node the node to clone. + * @param stylesheet the stylesheet which provides context for the cloning. + * @return the cloned node. + */ + private TemplateNode cloneAttributeValueTemplate(TemplateNode node, Stylesheet stylesheet) + { + if (node instanceof ValueOfNode) + return ((ValueOfNode) node).clone(stylesheet); + return ((LiteralNode) node).clone(stylesheet); + } +} -- cgit v1.2.3