|
1
6
7 package analyzer.listeners;
8
9 import java.io.*;
10
11
17 public abstract class Parser {
18
19 protected StreamTokenizer st;
20
21 protected static int EOF=StreamTokenizer.TT_EOF;
22 protected static int NUMBER=StreamTokenizer.TT_NUMBER;
23 protected static int WORD=StreamTokenizer.TT_WORD;
24
25 protected int ttype;
26 protected long timestamp,startTime;
27
28 protected String  fileName;
29
30
31
32
33 public Parser(String myFileName) {
34 init();
35 fileName=myFileName;
36 timestamp=0;
37 openFile(fileName);
38 }
39
40 private void firstTimeStamp(){
41 try{
42 nextNUMBER();
43 startTime=new Double (st.nval).longValue();
44 }catch(SyntaxException e){
45 System.err.println("first ts not found");
46 startTime=-1;
47 }
48 st.pushBack();
49 }
50
51 private static String getCWD() {
52 java.io.File f = new java.io.File (".");
53 String cwd = f.getAbsolutePath();
54 return cwd.substring(0, cwd.length() - 1);
55 }
56
57 private void openFile(String filepath){
58 try{
59 File file=new File(filepath);
60 file=file.getAbsoluteFile();
61 FileInputStream fstream=new FileInputStream(filepath);
62
63 Reader r=new BufferedReader(new InputStreamReader(fstream));
64 st=new StreamTokenizer(r);
65 st.parseNumbers();
66 st.eolIsSignificant(false);
67 firstTimeStamp();
68 while(ttype!=EOF){
69 try{
70 analyzeTokenInput();
71 } catch(SyntaxException se){
72 String msg=se.getMessage();
73 if(msg.length()>0)recover(msg);
74 }
75 }
76 System.out.println("file length: "+st.lineno()+" lines");
77 fstream.close();
78 eof();
79 } catch(java.io.FileNotFoundException e){
80 System.err.println("file not found:"+fileName);
81 e.printStackTrace();
82 } catch(Exception e){
83 e.printStackTrace();
84 }
85 }
86
87 protected void nextWORD() throws SyntaxException{
88 next();
89 if(ttype!=WORD) throw(new SyntaxException("WORD expected, ttype: "+ttype));
90 }
91
92 protected void nextNUMBER() throws SyntaxException{
93 next();
94 if(ttype!=NUMBER) throw(new SyntaxException("NUMBER expected, ttype: "+ttype));
95 }
96
97 protected void next() throws SyntaxException{
98 try{
99 ttype = st.nextToken();
100 while(ttype!=WORD && ttype!=NUMBER && ttype!=EOF) ttype = st.nextToken();
101 }catch(Exception e){
102 e.printStackTrace();
103 }
104 if(ttype==EOF) throw(new SyntaxException(""));
105 }
106
107 private void recover(String msg){
108 try{
109 if(msg.length()>0)error(msg);
110 while(ttype!=NUMBER && ttype!=EOF) next();
111 st.pushBack();
112 }catch(SyntaxException e){
113 String myMSG=e.getMessage();
114 if(myMSG.length()==0)return;
115 else System.out.println("you are shit");
116 }
117 }
118
119 protected void error(String msg){
120 System.err.println(st.lineno()+":"+msg);
121 }
122
123 protected String prettyTime(long l){
124 int i = new Long (l/1000).intValue();
125 int h = i/3600;
126 String hs=new Integer (h).toString();
127 if(h<10) hs="0"+hs;
128 int m = (i%3600)/60;
129 String ms=new Integer (m).toString();
130 if(m<10) ms="0"+ms;
131 int s = i%60;
132 String ss=new Integer (s).toString();
133 if(s<10) ss="0"+ss;
134 return hs+":"+ms+":"+ss;
135 }
136
137 protected boolean svalIs(String s){
138 return st.sval.equalsIgnoreCase(s);
139 }
140
141 abstract protected void eof();
142
143 abstract protected void init();
144
145 abstract protected void analyzeTokenInput() throws SyntaxException;
146
147 }
148 |
Popular Tags |
Java API By Example, From Geeks To Geeks.