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1
4 package com.inversoft.savant;
5
6
7 import java.io.BufferedInputStream  ;
8 import java.io.BufferedWriter ;
9 import java.io.File ;
10 import java.io.FileInputStream ;
11 import java.io.FileWriter ;
12 import java.io.IOException ;
13 import java.util.Iterator ;
14 import java.util.Set ;
15 import javax.xml.parsers.DocumentBuilder ;
16 import javax.xml.parsers.DocumentBuilderFactory ;
17 import javax.xml.parsers.ParserConfigurationException ;
18
19 import org.w3c.dom.Document ;
20 import org.w3c.dom.NamedNodeMap ;
21 import org.w3c.dom.Node ;
22 import org.w3c.dom.NodeList ;
23 import org.xml.sax.SAXException ;
24
25
26
33 public class ArtifactTools {
34
35 public static final String OPEN_TAG = "<dependencies>\n";
36 public static final String CLOSE_TAG = "</dependencies>";
37
38
39
48 public static Document resolveArtifactDependencies(Artifact artifact,
49 File file)
50 throws SavantException {
51 try {
52 BufferedInputStream bis = new BufferedInputStream (new FileInputStream (file));
53 DocumentBuilder xmlBuilder =
54 DocumentBuilderFactory.newInstance().newDocumentBuilder();
55 Document doc = xmlBuilder.parse(bis);
56 NodeList list = doc.getElementsByTagName("artifact");
57 for (int i = 0; i < list.getLength(); i++) {
58 Node node = list.item(i);
59 NamedNodeMap attrs = node.getAttributes();
60 Node group = attrs.getNamedItem("group");
61 if (group == null) {
62 throw new SavantException("Artifact deps XML missing " +
63 "group attribute [" + artifact.getName() + "]");
64 }
65
66 Node name = attrs.getNamedItem("name");
67 if (name == null) {
68 throw new SavantException("Artifact deps XML missing " +
69 "name attribute [" + artifact.getName() + "]");
70 }
71
72 Node projName = attrs.getNamedItem("projectname");
73 if (projName == null) {
74 throw new SavantException("Artifact deps XML missing " +
75 "projectname attribute [" + artifact.getName() + "]");
76 }
77
78 Node type = attrs.getNamedItem("type");
79 if (type == null) {
80 throw new SavantException("Artifact deps XML missing " +
81 "type attribute [" + artifact.getName() + "]");
82 }
83
84 Node version = attrs.getNamedItem("version");
85
86 Artifact dep = new Artifact();
87 dep.setGroup(group.getNodeValue());
88 dep.setName(name.getNodeValue());
89 dep.setProjectname(projName.getNodeValue());
90 dep.setType(type.getNodeValue());
91 dep.setVersion( (version == null ? null : version.getNodeValue()) );
92
93 artifact.addDependency(dep);
94 }
95
96 return doc;
97 } catch (IOException ioe) {
98 throw new SavantException("Unable to parse artifact dependency XML " +
99 "for artifact [" + artifact + "]", ioe);
100 } catch (ParserConfigurationException pce) {
101 throw new SavantException("Unable to parse artifact dependency XML " +
102 "for artifact [" + artifact + "]", pce);
103 } catch (SAXException se) {
104 throw new SavantException("Unable to parse artifact dependency XML " +
105 "for artifact [" + artifact + "]", se);
106 }
107 }
108
109
118 public static final File generateXML(Set artifacts) throws SavantException {
119 BufferedWriter bos = null;
120 try {
121 File tmp = File.createTempFile("savant", "deps");
122 bos = new BufferedWriter (new FileWriter (tmp));
123
124 bos.write(OPEN_TAG);
126 for (Iterator iterator = artifacts.iterator(); iterator.hasNext();) {
127 Artifact artifact = (Artifact) iterator.next();
128 bos.write(" <artifact group=\"" + artifact.getGroup() +
129 "\" projectname=\"" + artifact.getProjectname() + "\" name=\"" +
130 artifact.getName() + "\" version=\"" + artifact.getVersion() +
131 "\" type=\"" + artifact.getType() + "\"/>\n");
132 }
133
134 bos.write(CLOSE_TAG);
135 return tmp;
136 } catch (IOException ioe) {
137 throw new SavantException(ioe);
138 } finally {
139 if (bos != null) {
140 try {
141 bos.close();
142 } catch (IOException ioe) {
143 throw new SavantException(ioe);
144 }
145 }
146 }
147 }
148 }
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