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1 package freemarker.template;
2
3 import java.util.ArrayList  ;
4 import java.util.HashMap ;
5
6 import freemarker.core.ParseException;
7 import freemarker.template.utility.StringUtil;
8
9
12 class SettingStringParser {
13 private String text;
14 private int p;
15 private int ln;
16
17 SettingStringParser(String text) {
18 this.text = text;
19 this.p = 0;
20 this.ln = text.length();
21 }
22
23 ArrayList parseAsList() throws ParseException {
24 char c;
25 ArrayList seq = new ArrayList ();
26 while (true) {
27 c = skipWS();
28 if (c == ' ') break;
29 seq.add(fetchStringValue());
30 c = skipWS();
31 if (c == ' ') break;
32 if (c != ',') throw new ParseException(
33 "Expected \",\" or the end of text but "
34 + "found \"" + c + "\"", 0, 0);
35 p++;
36 }
37 return seq;
38 }
39
40 HashMap parseAsImportList() throws ParseException {
41 char c;
42 HashMap map = new HashMap ();
43 while (true) {
44 c = skipWS();
45 if (c == ' ') break;
46 String lib = fetchStringValue();
47
48 c = skipWS();
49 if (c == ' ') throw new ParseException(
50 "Unexpected end of text: expected \"as\"", 0, 0);
51 String s = fetchKeyword();
52 if (!s.equalsIgnoreCase("as")) throw new ParseException(
53 "Expected \"as\", but found " + StringUtil.jQuote(s), 0, 0);
54
55 c = skipWS();
56 if (c == ' ') throw new ParseException(
57 "Unexpected end of text: expected gate hash name", 0, 0);
58 String ns = fetchStringValue();
59
60 map.put(ns, lib);
61
62 c = skipWS();
63 if (c == ' ') break;
64 if (c != ',') throw new ParseException(
65 "Expected \",\" or the end of text but "
66 + "found \"" + c + "\"", 0, 0);
67 p++;
68 }
69 return map;
70 }
71
72 String fetchStringValue() throws ParseException {
73 String w = fetchWord();
74 if (w.startsWith("'") || w.startsWith("\"")) {
75 w = w.substring(1, w.length() - 1);
76 }
77 return StringUtil.FTLStringLiteralDec(w);
78 }
79
80 String fetchKeyword() throws ParseException {
81 String w = fetchWord();
82 if (w.startsWith("'") || w.startsWith("\"")) {
83 throw new ParseException(
84 "Keyword expected, but a string value found: " + w, 0, 0);
85 }
86 return w;
87 }
88
89 char skipWS() {
90 char c;
91 while (p < ln) {
92 c = text.charAt(p);
93 if (!Character.isWhitespace(c)) return c;
94 p++;
95 }
96 return ' ';
97 }
98
99 private String fetchWord() throws ParseException {
100 if (p == ln) throw new ParseException(
101 "Unexpeced end of text", 0, 0);
102
103 char c = text.charAt(p);
104 int b = p;
105 if (c == '\'' || c == '"') {
106 boolean escaped = false;
107 char q = c;
108 p++;
109 while (p < ln) {
110 c = text.charAt(p);
111 if (!escaped) {
112 if (c == '\\') {
113 escaped = true;
114 } else if (c == q) {
115 break;
116 }
117 } else {
118 escaped = false;
119 }
120 p++;
121 }
122 if (p == ln) {
123 throw new ParseException("Missing " + q, 0, 0);
124 }
125 p++;
126 return text.substring(b, p);
127 } else {
128 do {
129 c = text.charAt(p);
130 if (!(Character.isLetterOrDigit(c)
131 || c == '/' || c == '\\' || c == '_'
132 || c == '.' || c == '-' || c == '!'
133 || c == '*' || c == '?')) break;
134 p++;
135 } while (p < ln);
136 if (b == p) {
137 throw new ParseException("Unexpected character: " + c, 0, 0);
138 } else {
139 return text.substring(b, p);
140 }
141 }
142 }
143 } |
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