1 /*
2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 import java.io.*;
26 import java.util.*;
27
28 public class MacroDefinitions {
29 private Vector macros;
30
31 public MacroDefinitions() {
32 macros = new Vector();
33 }
34
35 public void addMacro(String name, String contents) {
36 Macro macro = new Macro();
37 macro.name = name;
38 macro.contents = contents;
39 macros.add(macro);
40 }
41
42 private boolean lineIsEmpty(String s) {
43 for (int i = 0; i < s.length(); i++) {
44 if (!Character.isWhitespace(s.charAt(i))) {
45 return false;
46 }
47 }
48 return true;
49 }
50
51 public void readFrom(String fileName, boolean missingOk)
52 throws FileNotFoundException, FileFormatException, IOException {
53 BufferedReader reader = null;
54 try {
55 reader = new BufferedReader(new FileReader(fileName));
56 } catch (FileNotFoundException e) {
57 if (missingOk) {
58 return;
59 } else {
60 throw(e);
61 }
62 }
63 String line;
64 do {
65 line = reader.readLine();
66 if (line != null) {
67 // This had to be rewritten (compare to Database.java)
68 // because the Solaris platform file has been
69 // repurposed and now contains "macros" with spaces in
70 // them.
71
72 if ((!line.startsWith("//")) &&
73 (!lineIsEmpty(line))) {
74 int nameBegin = -1;
75 int nameEnd = -1;
76 boolean gotEquals = false;
77 int contentsBegin = -1;
78 int contentsEnd = -1;
79
80 int i = 0;
81 // Scan forward for beginning of name
82 while (i < line.length()) {
83 if (!Character.isWhitespace(line.charAt(i))) {
84 break;
85 }
86 i++;
87 }
88 nameBegin = i;
89
90 // Scan forward for end of name
91 while (i < line.length()) {
92 if (Character.isWhitespace(line.charAt(i))) {
93 break;
94 }
95 i++;
96 }
97 nameEnd = i;
98
99 // Scan forward for equals sign
100 while (i < line.length()) {
101 if (line.charAt(i) == '=') {
102 gotEquals = true;
103 break;
104 }
105 i++;
106 }
107
108 // Scan forward for start of contents
109 i++;
110 while (i < line.length()) {
111 if (!Character.isWhitespace(line.charAt(i))) {
112 break;
113 }
114 i++;
115 }
116 contentsBegin = i;
117
118 // Scan *backward* for end of contents
119 i = line.length() - 1;
120 while (i >= 0) {
121 if (!Character.isWhitespace(line.charAt(i))) {
122 break;
123 }
124 }
125 contentsEnd = i+1;
126
127 // Now do consistency check
128 if (!((nameBegin < nameEnd) &&
129 (nameEnd < contentsBegin) &&
130 (contentsBegin < contentsEnd) &&
131 (gotEquals == true))) {
132 throw new FileFormatException(
133 "Expected \"macroname = value\", " +
134 "but found: " + line
135 );
136 }
137
138 String name = line.substring(nameBegin, nameEnd);
139 String contents = line.substring(contentsBegin,
140 contentsEnd);
141 addMacro(name, contents);
142 }
143 }
144 } while (line != null);
145 reader.close();
146 }
147
148 /** This returns an Iterator of Macros. You should not mutate the
149 returned Macro objects or use the Iterator to remove
150 macros. */
151 public Iterator getMacros() {
152 return macros.iterator();
153 }
154 }