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1
19
20 package jode.obfuscator.modules;
21 import jode.obfuscator.*;
22 import java.util.Collection  ;
23 import java.util.Iterator ;
24 import java.lang.UnsupportedOperationException ;
25
26 public class StrongRenamer implements Renamer, OptionHandler {
27 static String [] idents = {
28 "Package", "Class", "Field", "Method", "Local"
29 };
30 static String [] parts = {
31 "Start", "Part"
32 };
33 String charsets[][];
34
35 String javaKeywords[] = {
36 "abstract", "default", "if", "private", "throw", "boolean",
37 "do", "implements", "protected", "throws", "break", "double",
38 "import", "public", "transient", "byte", "else", "instanceof",
39 "return", "try", "case", "extends", "int", "short", "void",
40 "catch", "final", "interface", "static", "volatile", "char",
41 "finally", "long", "super", "while", "class", "float",
42 "native", "switch", "const", "for", "new", "synchronized",
43 "continue", "goto", "package", "this", "strictfp", "null",
44 "true", "false"
45 };
46
47 public StrongRenamer() {
48 charsets = new String [idents.length][parts.length];
49 for (int i=0; i< idents.length; i++)
50 for (int j=0; j< parts.length; j++)
51 charsets[i][j] = "abcdefghijklmnopqrstuvwxyz";
52 }
53
54 public void setOption(String option, Collection values) {
55 if (option.startsWith("charset")) {
56 Object value = values.iterator().next();
57 if (values.size() != 1 || !(value instanceof String ))
58 throw new IllegalArgumentException
59 ("Only string parameter are supported.");
60 String set = (String ) value;
61 String remOpt = option.substring("charset".length());
62 int part = -1, ident = -1;
63 if (remOpt.length() > 0) {
64 for (int i=0; i < idents.length; i++) {
65 if (remOpt.startsWith(idents[i])) {
66 remOpt = remOpt.substring(idents[i].length());
67 ident = i;
68 break;
69 }
70 }
71 }
72 if (remOpt.length() > 0) {
73 for (int j=0; j < parts.length; j++) {
74 if (remOpt.startsWith(parts[j])) {
75 remOpt = remOpt.substring(parts[j].length());
76 part = j;
77 break;
78 }
79 }
80 }
81 if (remOpt.length() > 0)
82 throw new IllegalArgumentException ("Invalid charset `"
83 +option+"'");
84 for (int i = 0; i < idents.length; i++) {
85 if (ident >= 0 && ident != i)
86 continue;
87 for (int j = 0; j < parts.length; j++) {
88 if (part >= 0 && part != j)
89 continue;
90 charsets[i][j] = set;
91 }
92 }
93 } else
94 throw new IllegalArgumentException ("Invalid option `"
95 +option+"'");
96 }
97
98 public Iterator generateNames(Identifier ident) {
99 int identType;
100 if (ident instanceof PackageIdentifier)
101 identType = 0;
102 else if (ident instanceof ClassIdentifier)
103 identType = 1;
104 else if (ident instanceof FieldIdentifier)
105 identType = 2;
106 else if (ident instanceof MethodIdentifier)
107 identType = 3;
108 else if (ident instanceof LocalIdentifier)
109 identType = 4;
110 else
111 throw new IllegalArgumentException (ident.getClass().getName());
112 final String [] theCharset = charsets[identType];
113
114 return new Iterator () {
115 char[] name = null;
116 int headIndex;
117
118 public boolean hasNext() {
119 return true;
120 }
121 public Object next() {
122 if (name == null) {
123 name = new char[] { theCharset[0].charAt(0) };
124 headIndex = 0;
125 return new String (name);
126 }
127 next_name:
128 while (true) {
129 if (++headIndex < theCharset[0].length()) {
130 name[0] = theCharset[0].charAt(headIndex);
131 return new String (name);
132 }
133 headIndex = 0;
134 name[0] = theCharset[0].charAt(0);
135
136 String charset = theCharset[1];
137 for (int pos = 1; pos < name.length; pos++) {
138 int index = charset.indexOf(name[pos]) + 1;
139 if (index < charset.length()) {
140 name[pos] = charset.charAt(index);
141 return new String (name);
142 }
143 name[pos] = charset.charAt(0);
144 }
145
146 name = new char[name.length+1];
147 name[0] = theCharset[0].charAt(0);
148 char firstCont = theCharset[1].charAt(0);
149 for (int i=1; i <name.length; i++)
150 name[i] = firstCont;
151
152 String next = new String (name);
153 for (int i = 0; i < javaKeywords.length; i++) {
154 if (next.equals(javaKeywords[i]))
155 continue next_name;
156 }
157 return next;
158 }
159 }
160
161 public void remove() {
162 throw new UnsupportedOperationException ();
163 }
164 };
165 }
166 }
167
168 |
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