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1 package org.objectweb.celtix.tools.common.toolspec.parser;
2
3 import java.util.ArrayList  ;
4 import java.util.List ;
5 import java.util.logging.Level ;
6 import java.util.logging.Logger ;
7
8 import org.w3c.dom.Element ;
9 import org.w3c.dom.NodeList ;
10
11 import org.objectweb.celtix.common.logging.LogUtils;
12 import org.objectweb.celtix.tools.common.toolspec.Tool;
13
14
15 public class Form implements TokenConsumer {
16
17 private static final Logger LOG = LogUtils.getL7dLogger(Form.class);
18 private final Element element;
19
20 private final List <Object > arguments = new ArrayList <Object >();
21 private final List <Object > optionGroups = new ArrayList <Object >();
22 private final List <Object > options = new ArrayList <Object >();
23
24 public Form(Element el) {
25 this.element = el;
26 NodeList list = element.getElementsByTagNameNS(Tool.TOOL_SPEC_PUBLIC_ID, "optionGroup");
27
28 for (int i = 0; i < list.getLength(); i++) {
29 optionGroups.add(new OptionGroup((Element )list.item(i)));
30 }
31 list = element.getElementsByTagNameNS(Tool.TOOL_SPEC_PUBLIC_ID, "argument");
32 for (int i = 0; i < list.getLength(); i++) {
33 arguments.add(new Argument((Element )list.item(i)));
34 }
35 getOptions(element);
36 }
37
38 private void getOptions(Element el) {
39 NodeList children = el.getChildNodes();
40
41 for (int i = 0; i < children.getLength(); i++) {
42 if ("option".equals(children.item(i).getNodeName())) {
43 options.add(new Option((Element )children.item(i)));
44 }
45 }
46 }
47
48
52 public boolean accept(TokenInputStream args, Element result, ErrorVisitor errors) {
53 if (LOG.isLoggable(Level.INFO)) {
54 LOG.info("Accepting token stream for form of usage: " + this + ", tokens are " + args);
55 }
56 int oldpos = args.getPosition();
57 if (LOG.isLoggable(Level.INFO)) {
58 LOG.info("Position is: " + oldpos);
59 }
60 boolean hasInfo = hasInfoOption(args);
61 args.setPosition(oldpos);
62 while (args.available() > 0) {
63 if (LOG.isLoggable(Level.INFO)) {
64 LOG.info("Args is available");
65 }
66 boolean accepted = false;
67 for (int i = 0; i < optionGroups.size(); i++) {
68 OptionGroup optionGroup = (OptionGroup)optionGroups.get(i);
69 if (optionGroup.accept(args, result, errors)) {
70 accepted = true;
71 break;
72 }
73 }
74
75 if (!accepted) {
76 for (int i = 0; i < options.size(); i++) {
77 Option option = (Option)options.get(i);
78 if (option.accept(args, result, errors)) {
79 accepted = true;
80 break;
81 }
82 }
83 }
84
85 if (!accepted) {
86 break;
87 }
88 }
89
90 for (int i = 0; i < optionGroups.size(); i++) {
91 OptionGroup optionGroup = (OptionGroup)optionGroups.get(i);
92
93 if (!optionGroup.isSatisfied(errors) && !hasInfo) {
94 return false;
95 }
96 }
97
98 for (int i = 0; i < options.size(); i++) {
99 Option option = (Option)options.get(i);
100
101 if (!option.isSatisfied(errors) && !hasInfo) {
102 return false;
103 }
104 }
105
106 if (arguments != null) {
107 for (int i = 0; i < arguments.size(); i++) {
108 Argument argument = (Argument)arguments.get(i);
109
110 argument.accept(args, result, errors);
111 if (!argument.isSatisfied(errors) && !hasInfo) {
112 return false;
113 }
114 }
115 }
116
117 if (args.available() > 0) {
118 String next = args.peek();
119
120 if (next.startsWith("-")) {
121 errors.add(new ErrorVisitor.UnexpectedOption(next));
122 } else {
123 errors.add(new ErrorVisitor.UnexpectedArgument(next));
124 }
125 if (LOG.isLoggable(Level.INFO)) {
126 LOG.info(this + " form is returning false as there are more args available"
127 + " that haven't been consumed");
128 }
129 args.setPosition(oldpos);
130 return false;
131 }
132 if (LOG.isLoggable(Level.INFO)) {
134 LOG.info("Form " + this + " is returning true");
135 }
136 return true;
137 }
138
139 public boolean hasInfoOption(TokenInputStream args) {
140 int pos = args.getPosition();
141 args.setPosition(0);
142 String optionValue;
143 while (args.available() > 0) {
144 optionValue = args.read();
145 if ("-?".equals(optionValue) || "-help".equals(optionValue) || "-h".equals(optionValue)
146 || "-v".equals(optionValue)) {
147 return true;
148 }
149 }
150 args.setPosition(pos);
151 return false;
152 }
153
154 public boolean isSatisfied(ErrorVisitor errors) {
155 return true;
156 }
157
158 public String getName() {
159 if (element.hasAttribute("value")) {
160 return element.getAttribute("value");
161 } else {
162 return "default";
163 }
164
165 }
166
167 public String toString() {
168 return getName();
169 }
170
171 }
172 |
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