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1
22
23
24 package com.mchange.v2.io;
25
26 import java.io.*;
27
28 public class IndentedWriter extends FilterWriter
29 {
30 final static String  EOL;
31
32 static
33 {
34 String eol = System.getProperty( "line.separator" );
35 EOL = ( eol != null ? eol : "\r\n" );
36 }
37
38 int indent_level = 0;
39 boolean at_line_start = true;
40
41 public IndentedWriter( Writer out )
42 { super( out ); }
43
44 private boolean isEol( char c )
45 { return ( c == '\r' || c == '\n' ); }
46
47 public void upIndent()
48 { ++indent_level; }
49
50 public void downIndent()
51 { --indent_level; }
52
53 public void write( int c ) throws IOException
54 {
55 out.write( c );
56 at_line_start = isEol( (char) c );
57 }
58
59 public void write( char[] chars, int off, int len ) throws IOException
60 {
61 out.write( chars, off, len );
62 at_line_start = isEol( chars[ off + len - 1] );
63 }
64
65 public void write( String s, int off, int len ) throws IOException
66 {
67 if (len > 0)
68 {
69 out.write( s, off, len );
70 at_line_start = isEol( s.charAt( off + len - 1) );
71 }
72 }
73
74 private void printIndent() throws IOException
75 {
76 for (int i = 0; i < indent_level; ++i)
77 out.write( '\t' );
78 }
79
80 public void print( String s ) throws IOException
81 {
82 if ( at_line_start )
83 printIndent();
84 out.write(s);
85 char last = s.charAt( s.length() - 1 );
86 at_line_start = isEol( last );
87 }
88
89 public void println( String s ) throws IOException
90 {
91 if ( at_line_start )
92 printIndent();
93 out.write(s);
94 out.write( EOL );
95 at_line_start = true;
96 }
97
98 public void print( boolean x ) throws IOException
99 { print( String.valueOf(x) ); }
100
101 public void print( byte x ) throws IOException
102 { print( String.valueOf(x) ); }
103
104 public void print( char x ) throws IOException
105 { print( String.valueOf(x) ); }
106
107 public void print( short x ) throws IOException
108 { print( String.valueOf(x) ); }
109
110 public void print( int x ) throws IOException
111 { print( String.valueOf(x) ); }
112
113 public void print( long x ) throws IOException
114 { print( String.valueOf(x) ); }
115
116 public void print( float x ) throws IOException
117 { print( String.valueOf(x) ); }
118
119 public void print( double x ) throws IOException
120 { print( String.valueOf(x) ); }
121
122 public void print( Object x ) throws IOException
123 { print( String.valueOf(x) ); }
124
125 public void println( boolean x ) throws IOException
126 { println( String.valueOf(x) ); }
127
128 public void println( byte x ) throws IOException
129 { println( String.valueOf(x) ); }
130
131 public void println( char x ) throws IOException
132 { println( String.valueOf(x) ); }
133
134 public void println( short x ) throws IOException
135 { println( String.valueOf(x) ); }
136
137 public void println( int x ) throws IOException
138 { println( String.valueOf(x) ); }
139
140 public void println( long x ) throws IOException
141 { println( String.valueOf(x) ); }
142
143 public void println( float x ) throws IOException
144 { println( String.valueOf(x) ); }
145
146 public void println( double x ) throws IOException
147 { println( String.valueOf(x) ); }
148
149 public void println( Object x ) throws IOException
150 { println( String.valueOf(x) ); }
151
152 public void println() throws IOException
153 { println( "" ); }
154 }
155 |
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