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1 package gnu.xml;
2 import gnu.mapping.*;
3 import gnu.xml.*;
4 import gnu.kawa.xml.KNode;
5 import gnu.lists.*;
6 import java.math.BigDecimal  ;
7
8 public class TextUtils
9 {
10 public static String asString (Object node)
11 {
12 if (node == Values.empty || node == null)
13 return "";
14 else if (node instanceof Values)
15 throw new ClassCastException ();
16 StringBuffer sbuf = new StringBuffer (100);
17 stringValue(node, sbuf);
18 return sbuf.toString();
19 }
20
21 public static String stringValue (Object node)
22 {
23 StringBuffer sbuf = new StringBuffer (100);
24 if (node instanceof Values)
25 {
26 TreeList tlist = (TreeList) node;
27 int index = 0;
28 for (;;)
29 {
30 int kind = tlist.getNextKind(index);
31 if (kind == Sequence.EOF_VALUE)
32 break;
33 if (kind == Sequence.OBJECT_VALUE)
34 stringValue(tlist.getPosNext(index), sbuf);
35 else
36 tlist.stringValue(tlist.posToDataIndex(index), sbuf);
37 index = tlist.nextPos(index);
38 }
39 }
40 else
41 stringValue(node, sbuf);
42 return sbuf.toString();
43 }
44
45 public static void stringValue (Object node, StringBuffer sbuf)
46 {
47 if (node instanceof KNode)
48 {
49 KNode pos = (KNode) node;
50 NodeTree tlist = (NodeTree) pos.sequence;
51 tlist.stringValue(tlist.posToDataIndex(pos.ipos), sbuf);
52 return;
53 }
54 if (node instanceof BigDecimal )
55 node = XMLPrinter.formatDecimal((BigDecimal ) node);
56 else if (node instanceof Double || node instanceof gnu.math.DFloNum)
57 node = XMLPrinter.formatDouble(((Number ) node).doubleValue());
58 else if (node instanceof Float )
59 node = XMLPrinter.formatFloat(((Number ) node).floatValue());
60 if (node != null && node != Values.empty)
61 sbuf.append(node);
62 }
63
64 public static void textValue (Object arg, Consumer out)
65 {
66 if (arg == null || (arg instanceof Values && ((Values) arg).isEmpty()))
67 return;
68 String str;
69 if (arg instanceof String )
70 str = (String ) arg;
71 else
72 {
73 StringBuffer sbuf = new StringBuffer ();
74 if (arg instanceof Values)
75 {
76 Object [] vals = ((Values) arg).getValues();
77 for (int i = 0; i < vals.length; i++)
78 {
79 if (i > 0)
80 sbuf.append(' ');
81 stringValue(vals[i], sbuf);
82 }
83 }
84 else
85 stringValue(arg, sbuf);
86 str = sbuf.toString();
87 }
88 out.write(str);
89 }
90
91 public static String replaceWhitespace (String str, boolean collapse)
92 {
93
94
96 StringBuffer sbuf = null;
97
98 int len = str.length();
99 int prevSpace = collapse ? 1 : 0;
102 for (int i = 0; i < len; )
103 {
104 char ch = str.charAt(i++);
105 int isSpace = ch == ' ' ? 1
106 : ch == '\t' || ch == '\r' || ch == '\n' ? 2 : 0;
107 if (sbuf == null
108 && (isSpace == 2
109 || (isSpace == 1 && prevSpace > 0 && collapse)
110 || (isSpace == 1 && i == len && collapse)))
111 {
112
113
115 sbuf = new StringBuffer ();
116
117 int k = prevSpace > 0 ? i - 2 : i - 1;
118 for (int j = 0; j < k; j++)
119 sbuf.append(str.charAt(j));
120 ch = ' ';
121 }
122 if (collapse)
123 {
124 if (prevSpace > 0 && isSpace == 0)
125 {
126 if (sbuf != null && sbuf.length() > 0)
127 sbuf.append(' ');
128 prevSpace = 0;
129 }
130 else if (isSpace == 2 || (isSpace == 1 && prevSpace > 0))
131 prevSpace = 2;
132 else if (isSpace > 0)
133 prevSpace = 1;
134 else
135 prevSpace = 0;
136 if (prevSpace > 0)
137 continue;
138 }
139 if (sbuf != null)
140 sbuf.append(ch);
141 }
142 if (sbuf != null)
143 return sbuf.toString();
144 else
145 return str;
146
147 }
148 }
149 |
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