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1
6
7 package com.lowagie.text.pdf.hyphenation;
8
9 import com.lowagie.text.ExceptionConverter;
10 import java.io.*;
11 import java.util.ArrayList;
12 import java.util.StringTokenizer;
13
14 public class PatternInternalParser implements PatternConsumer {
15
16 PatternConsumer consumer;
17
18 public PatternInternalParser() {
19 }
20
21 public PatternInternalParser(PatternConsumer consumer) {
22 this.consumer = consumer;
23 }
24
25 public void setConsumer(PatternConsumer consumer) {
26 this.consumer = consumer;
27 }
28
29 protected String getHyphString(InputStream is) throws IOException{
30 InputStreamReader isr = new InputStreamReader(is, "UTF8");
31 char c[] = new char[4000];
32 StringBuffer buf = new StringBuffer();
33 while (true) {
34 int n = isr.read(c);
35 if (n < 0)
36 break;
37 buf.append(c, 0, n);
38 }
39 isr.close();
40 return buf.toString();
41 }
42
43 public void parse(String filename) {
44 InputStream is;
45 try {
46 is = new FileInputStream(filename);
47 }
48 catch (IOException ioe) {
49 throw new ExceptionConverter(ioe);
50 }
51 parse(is);
52 }
53
54 public void parse(InputStream is) {
55 String hyphs;
56 try {
57 hyphs = getHyphString(is);
58 }
59 catch (IOException ioe) {
60 throw new ExceptionConverter(ioe);
61 }
62 parseString(hyphs);
63 }
64
65 public void parseString(String hyphs) {
66 StringTokenizer tk = new StringTokenizer(hyphs);
67 readClasses(tk);
68 readExceptions(tk);
69 readPatterns(tk);
70 }
71
72 protected void readClasses(StringTokenizer tk) {
73 String token = "";
74 while (tk.hasMoreTokens()) {
75 token = tk.nextToken();
76 if (token.equals("*"))
77 break;
78 consumer.addClass(token);
79 }
80 }
81
82 protected void readExceptions(StringTokenizer tk) {
83 String token = "";
84 while (tk.hasMoreTokens()) {
85 token = tk.nextToken();
86 if (token.equals("*"))
87 break;
88 String word = token;
89 ArrayList vec = new ArrayList();
90 while (tk.hasMoreTokens()) {
91 token = tk.nextToken();
92 if (token.equals("{")) {
93 String t1 = tk.nextToken();
94 if (t1.equals("N"))
95 t1 = null;
96 String t2 = tk.nextToken();
97 if (t2.equals("N"))
98 t2 = null;
99 String t3 = tk.nextToken();
100 if (t3.equals("N"))
101 t3 = null;
102 Hyphen hy = new Hyphen(t2, t1, t3);
103 vec.add(hy);
104 }
105 else if (token.equals("#")) {
106 break;
107 }
108 else
109 vec.add(token);
110 }
111 consumer.addException(word, vec);
112 }
113 }
114
115 protected void readPatterns(StringTokenizer tk) {
116 String token = "";
117 while (tk.hasMoreTokens()) {
118 token = tk.nextToken();
119 consumer.addPattern(token, tk.nextToken());
120 }
121 }
122
123 public void addClass(String c) {
125 System.out.println("class: " + c);
126 }
127
128 public void addException(String w, ArrayList e) {
129 System.out.println("exception: " + w + " : " + e.toString());
130 }
131
132 public void addPattern(String p, String v) {
133 System.out.println("pattern: " + p + " : " + v);
134 }
135
136
143
144 }
145 |
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