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1
8
9 package com.caucho.eswrap.java.io;
10
11 import com.caucho.util.CharBuffer;
12
13 import java.io.IOException  ;
14 import java.io.InputStream ;
15
16 public class InputStreamEcmaWrap {
17 public static int readByte(InputStream is)
18 throws IOException
19 {
20 return is.read();
21 }
22
23 public static String read(InputStream is)
24 throws IOException
25 {
26 int ch = is.read();
27
28 if (ch == -1)
29 return null;
30
31 return String.valueOf((char) ch);
32 }
33
34 public static String read(InputStream is, int length)
35 throws IOException
36 {
37 CharBuffer bb = new CharBuffer();
38
39 for (; length > 0; length--) {
40 int ch = is.read();
41
42 if (ch == -1)
43 break;
44
45 bb.append((char) ch);
46 }
47
48 if (bb.length() == 0)
49 return null;
50
51 return bb.toString();
52 }
53
54 public static String readln(InputStream is)
55 throws IOException
56 {
57 CharBuffer bb = new CharBuffer();
58
59 boolean hasCr = false;
60 boolean hasData = false;
61 while (true) {
62 int ch = is.read();
63
64 if (ch == -1)
65 break;
66 else if (ch == '\n') {
67 hasData = true;
68 break;
69 }
70 else if (hasCr) {
71 hasData = true;
72 break;
73 }
74
75 if (ch == '\r')
76 hasCr = true;
77 else
78 bb.append((char) ch);
79 }
80
81 if (bb.length() == 0 && ! hasData)
82 return null;
83
84 return bb.toString();
85 }
86 }
87
88 |
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