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1
38
39
40 package com.sun.xml.fastinfoset.sax;
41
42 import java.io.*;
43
44 public class SystemIdResolver {
45
46 public SystemIdResolver() {
47 }
48
49 public static String  getAbsoluteURIFromRelative(String localPath) {
50 if (localPath == null || localPath.length() == 0) {
51 return "";
52 }
53
54 String absolutePath = localPath;
55 if (!isAbsolutePath(localPath)) {
56 try {
57 absolutePath = getAbsolutePathFromRelativePath(localPath);
58 }
59 catch (SecurityException se) {
60 return "file:" + localPath;
61 }
62 }
63
64 String urlString;
65 if (null != absolutePath) {
66 urlString = absolutePath.startsWith(File.separator) ?
67 ("file://" + absolutePath) :
68 ("file:///" + absolutePath);
69 }
70 else {
71 urlString = "file:" + localPath;
72 }
73
74 return replaceChars(urlString);
75 }
76
77 private static String getAbsolutePathFromRelativePath(String relativePath) {
78 return new File(relativePath).getAbsolutePath();
79 }
80
81 public static boolean isAbsoluteURI(String systemId) {
82 if (systemId == null) {
83 return false;
84 }
85
86 if (isWindowsAbsolutePath(systemId)) {
87 return false;
88 }
89
90 final int fragmentIndex = systemId.indexOf('#');
91 final int queryIndex = systemId.indexOf('?');
92 final int slashIndex = systemId.indexOf('/');
93 final int colonIndex = systemId.indexOf(':');
94
95 int index = systemId.length() -1;
96 if (fragmentIndex > 0) {
97 index = fragmentIndex;
98 }
99 if (queryIndex > 0 && queryIndex < index) {
100 index = queryIndex;
101 }
102 if (slashIndex > 0 && slashIndex <index) {
103 index = slashIndex;
104 }
105 return (colonIndex > 0) && (colonIndex < index);
106 }
107
108 public static boolean isAbsolutePath(String systemId) {
109 if(systemId == null)
110 return false;
111 final File file = new File(systemId);
112 return file.isAbsolute();
113
114 }
115
116 private static boolean isWindowsAbsolutePath(String systemId) {
117 if(!isAbsolutePath(systemId))
118 return false;
119 if (systemId.length() > 2
120 && systemId.charAt(1) == ':'
121 && Character.isLetter(systemId.charAt(0))
122 && (systemId.charAt(2) == '\\' || systemId.charAt(2) == '/'))
123 return true;
124 else
125 return false;
126 }
127
128 private static String replaceChars(String str) {
129 StringBuffer buf = new StringBuffer (str);
130 int length = buf.length();
131 for (int i = 0; i < length; i++) {
132 char currentChar = buf.charAt(i);
133 if (currentChar == ' ') {
135 buf.setCharAt(i, '%');
136 buf.insert(i+1, "20");
137 length = length + 2;
138 i = i + 2;
139 }
140 else if (currentChar == '\\') {
142 buf.setCharAt(i, '/');
143 }
144 }
145
146 return buf.toString();
147 }
148
149 public static String getAbsoluteURI(String systemId) {
150 String absoluteURI = systemId;
151 if (isAbsoluteURI(systemId)) {
152 if (systemId.startsWith("file:")) {
153 String str = systemId.substring(5);
154
155 if (str != null && str.startsWith("/")) {
156 if (str.startsWith("///") || !str.startsWith("//")) {
157 int secondColonIndex = systemId.indexOf(':', 5);
158 if (secondColonIndex > 0) {
159 String localPath = systemId.substring(secondColonIndex-1);
160 try {
161 if (!isAbsolutePath(localPath))
162 absoluteURI = systemId.substring(0, secondColonIndex-1) +
163 getAbsolutePathFromRelativePath(localPath);
164 }
165 catch (SecurityException se) {
166 return systemId;
167 }
168 }
169 }
170 }
171 else {
172 return getAbsoluteURIFromRelative(systemId.substring(5));
173 }
174
175 return replaceChars(absoluteURI);
176 }
177 else {
178 return systemId;
179 }
180 }
181 else {
182 return getAbsoluteURIFromRelative(systemId);
183 }
184 }
185 }
186 |
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