1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/*
* Copyright 2011 Vaadin Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.vaadin.sass.util;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
public class StringUtil {
private static final String FOLDER_SEPARATOR = "/"; // folder separator
private static final String WINDOWS_FOLDER_SEPARATOR = "\\"; // Windows
// folder
// separator
private static final String TOP_PATH = ".."; // top folder
private static final String CURRENT_PATH = "."; // current folder
public static String cleanPath(String path) {
String pathToUse = replace(path, WINDOWS_FOLDER_SEPARATOR,
FOLDER_SEPARATOR);
String[] pathArray = delimitedListToStringArray(pathToUse,
FOLDER_SEPARATOR);
List pathElements = new LinkedList();
int tops = 0;
for (int i = pathArray.length - 1; i >= 0; i--) {
if (CURRENT_PATH.equals(pathArray[i])) {
// do nothing
} else if (TOP_PATH.equals(pathArray[i])) {
tops++;
} else {
if (tops > 0) {
tops--;
} else {
pathElements.add(0, pathArray[i]);
}
}
}
for (int i = 0; i < tops; i++) {
pathElements.add(0, TOP_PATH);
}
return collectionToDelimitedString(pathElements, FOLDER_SEPARATOR);
}
public static String replace(String inString, String oldPattern,
String newPattern) {
if (inString == null) {
return null;
}
if (oldPattern == null || newPattern == null) {
return inString;
}
StringBuffer sbuf = new StringBuffer();
// output StringBuffer we'll build up
int pos = 0; // our position in the old string
int index = inString.indexOf(oldPattern);
// the index of an occurrence we've found, or -1
int patLen = oldPattern.length();
while (index >= 0) {
sbuf.append(inString.substring(pos, index));
sbuf.append(newPattern);
pos = index + patLen;
index = inString.indexOf(oldPattern, pos);
}
sbuf.append(inString.substring(pos));
// remember to append any characters to the right of a match
return sbuf.toString();
}
public static String[] delimitedListToStringArray(String str,
String delimiter) {
if (str == null) {
return new String[0];
}
if (delimiter == null) {
return new String[] { str };
}
List result = new ArrayList();
int pos = 0;
int delPos = 0;
while ((delPos = str.indexOf(delimiter, pos)) != -1) {
result.add(str.substring(pos, delPos));
pos = delPos + delimiter.length();
}
if (str.length() > 0 && pos <= str.length()) {
// Add rest of String, but not in case of empty input.
result.add(str.substring(pos));
}
return (String[]) result.toArray(new String[result.size()]);
}
public static String collectionToDelimitedString(Collection coll,
String delim, String prefix, String suffix) {
if (coll == null) {
return "";
}
StringBuffer sb = new StringBuffer();
Iterator it = coll.iterator();
int i = 0;
while (it.hasNext()) {
if (i > 0) {
sb.append(delim);
}
sb.append(prefix).append(it.next()).append(suffix);
i++;
}
return sb.toString();
}
public static String collectionToDelimitedString(Collection coll,
String delim) {
return collectionToDelimitedString(coll, delim, "", "");
}
}
|
