37 |
* @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> |
* @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> |
38 |
* @version $Revision$ $Date$ |
* @version $Revision$ $Date$ |
39 |
*/ |
*/ |
40 |
public class LineIterator |
public class LineIterator implements Iterator, PendingData |
|
implements Iterator, PendingData |
|
41 |
{ |
{ |
42 |
|
|
43 |
static final String DOT = "."; |
static final String DOT = "."; |
44 |
|
|
45 |
boolean doneRead = false; |
boolean doneRead = false; |
46 |
NNTPConnection connection; |
NNTPConnection connection; |
47 |
String current; |
String current; |
48 |
|
|
49 |
LineIterator(NNTPConnection connection) |
LineIterator(NNTPConnection connection) |
50 |
{ |
{ |
51 |
this.connection = connection; |
this.connection = connection; |
52 |
} |
} |
53 |
|
|
54 |
void doRead() |
void doRead() throws IOException |
|
throws IOException |
|
55 |
{ |
{ |
56 |
if (doneRead) |
if (doneRead) |
57 |
return; |
return; |
58 |
String line = connection.read(); |
String line = connection.read(); |
59 |
if (DOT.equals(line)) |
if (DOT.equals(line)) |
60 |
current = null; |
current = null; |
61 |
else |
else |
62 |
current = line; |
current = line; |
63 |
doneRead = true; |
doneRead = true; |
64 |
} |
} |
65 |
|
|
66 |
/** |
/** |
67 |
* Indicates whether there are more lines to be read. |
* Indicates whether there are more lines to be read. |
68 |
*/ |
*/ |
69 |
public boolean hasNext() |
public boolean hasNext() |
70 |
{ |
{ |
71 |
try |
try |
72 |
{ |
{ |
73 |
doRead(); |
doRead(); |
74 |
} |
} |
75 |
catch (IOException e) |
catch(IOException e) |
76 |
{ |
{ |
77 |
return false; |
return false; |
78 |
} |
} |
79 |
return (current!=null); |
return (current != null); |
80 |
} |
} |
81 |
|
|
82 |
/** |
/** |
88 |
{ |
{ |
89 |
return nextLine(); |
return nextLine(); |
90 |
} |
} |
91 |
catch (IOException e) |
catch(IOException e) |
92 |
{ |
{ |
93 |
throw new NoSuchElementException("I/O error: "+e.getMessage()); |
throw new NoSuchElementException("I/O error: " + e.getMessage()); |
94 |
} |
} |
95 |
} |
} |
96 |
|
|
97 |
/** |
/** |
98 |
* Returns the next line. |
* Returns the next line. |
99 |
*/ |
*/ |
100 |
public String nextLine() |
public String nextLine() throws IOException |
|
throws IOException |
|
101 |
{ |
{ |
102 |
doRead(); |
doRead(); |
103 |
if (current==null) |
if (current == null) |
104 |
throw new NoSuchElementException(); |
throw new NoSuchElementException(); |
105 |
doneRead = false; |
doneRead = false; |
106 |
return current; |
return current; |
107 |
} |
} |
108 |
|
|
109 |
/** |
/** |
117 |
/** |
/** |
118 |
* Read to the end of this iterator. |
* Read to the end of this iterator. |
119 |
*/ |
*/ |
120 |
public void readToEOF() |
public void readToEOF() throws IOException |
|
throws IOException |
|
121 |
{ |
{ |
122 |
do |
do |
123 |
{ |
{ |
124 |
doRead(); |
doRead(); |
125 |
} |
} |
126 |
while (current!=null); |
while (current != null); |
127 |
} |
} |
128 |
|
|
129 |
} |
} |