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1
28
29 package com.caucho.eswrap.java.io;
30
31 import com.caucho.util.CharBuffer;
32
33 import java.io.IOException  ;
34 import java.io.Reader ;
35
36 public class ReaderEcmaWrap {
37 public static int readByte(Reader is)
38 throws IOException
39 {
40 return is.read();
41 }
42
43 public static String read(Reader is)
44 throws IOException
45 {
46 int ch = is.read();
47
48 if (ch == -1)
49 return null;
50
51 return String.valueOf((char) ch);
52 }
53
54 public static String read(Reader is, int length)
55 throws IOException
56 {
57 CharBuffer bb = new CharBuffer();
58
59 for (; length > 0; length--) {
60 int ch = is.read();
61
62 if (ch == -1)
63 break;
64
65 bb.append((char) ch);
66 }
67
68 if (bb.length() == 0)
69 return null;
70
71 return bb.toString();
72 }
73
74 public static String readln(Reader is)
75 throws IOException
76 {
77 CharBuffer bb = new CharBuffer();
78
79 boolean hasCr = false;
80 boolean hasData = false;
81 while (true) {
82 int ch = is.read();
83
84 if (ch == -1)
85 break;
86 else if (ch == '\n') {
87 hasData = true;
88 break;
89 }
90 else if (hasCr) {
91 hasData = true;
92 break;
93 }
94
95 if (ch == '\r')
96 hasCr = true;
97 else
98 bb.append((char) ch);
99 }
100
101 if (bb.length() == 0 && ! hasData)
102 return null;
103
104 return bb.toString();
105 }
106 }
107
108 |
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