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package org.webmacro.parser; |
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import org.webmacro.engine.BlockBuilder; |
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public class ParserBlockBuilder extends BlockBuilder |
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{ |
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43 | 1488 | private int literalMark = 0; |
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public ParserBlockBuilder () |
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{ |
47 | 0 | super(); |
48 | 0 | } |
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public ParserBlockBuilder (String name) |
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{ |
52 | 1488 | super(name); |
53 | 1488 | } |
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final public void markLiteral () |
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{ |
60 | 9292 | literalMark = size(); |
61 | 9292 | } |
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private final static boolean isSpaceChar (char c) |
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{ |
65 | 10964 | return (c == ' ' || c == '\t'); |
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} |
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private final static int eatWs (String s, int pos) |
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{ |
70 | 10176 | while (pos >= 0 && isSpaceChar(s.charAt(pos))) |
71 | 2182 | pos--; |
72 | 7994 | return pos; |
73 | |
} |
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private final static int eatOneWs (String s, int pos) |
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{ |
77 | 1046 | if (pos >= 0 && isSpaceChar(s.charAt(pos))) |
78 | 546 | pos--; |
79 | 1046 | return pos; |
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} |
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private final static int eatNl (String s, int pos) |
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{ |
84 | 7994 | if (pos >= 0) |
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{ |
86 | 7736 | if (s.charAt(pos) == '\r') |
87 | 0 | pos--; |
88 | 7736 | else if (s.charAt(pos) == '\n') |
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{ |
90 | 7720 | pos--; |
91 | 7720 | if (pos >= 0 && s.charAt(pos) == '\r') |
92 | 0 | pos--; |
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} |
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} |
95 | 7994 | return pos; |
96 | |
} |
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final public void eatTrailingWs () |
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{ |
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int i, j; |
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102 | 0 | i = size() - 1; |
103 | 0 | if (i < 0 || i + 1 == literalMark) |
104 | 0 | return; |
105 | |
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106 | 0 | Object o = elementAt(i); |
107 | 0 | if (!(o instanceof String)) |
108 | 0 | return; |
109 | 0 | String s = (String) o; |
110 | 0 | j = eatWs(s, s.length() - 1); |
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112 | 0 | if (j < 0) |
113 | 0 | remove(i); |
114 | 0 | else if (j < s.length() - 1) |
115 | 0 | setElementAt(s.substring(0, j + 1), i); |
116 | 0 | markLiteral(); |
117 | 0 | } |
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final public void eatTrailingWsNl () |
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{ |
122 | |
int i, j; |
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124 | 8488 | i = size() - 1; |
125 | 8488 | if (i < 0 || i + 1 == literalMark) |
126 | 332 | return; |
127 | |
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128 | 8156 | Object o = elementAt(i); |
129 | 8156 | if (!(o instanceof String)) |
130 | 162 | return; |
131 | 7994 | String s = (String) o; |
132 | 7994 | j = eatWs(s, s.length() - 1); |
133 | 7994 | j = eatNl(s, j); |
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135 | 7994 | if (j < 0) |
136 | 7348 | remove(i); |
137 | 646 | else if (j < s.length() - 1) |
138 | 646 | setElementAt(s.substring(0, j + 1), i); |
139 | 7994 | markLiteral(); |
140 | 7994 | } |
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final public void eatTrailingWsNlWs () |
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{ |
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int i, j; |
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146 | 0 | i = size() - 1; |
147 | 0 | if (i < 0 || i + 1 == literalMark) |
148 | 0 | return; |
149 | |
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150 | 0 | Object o = elementAt(i); |
151 | 0 | if (!(o instanceof String)) |
152 | 0 | return; |
153 | 0 | String s = (String) o; |
154 | 0 | j = eatWs(s, s.length() - 1); |
155 | 0 | j = eatNl(s, j); |
156 | 0 | j = eatWs(s, j); |
157 | |
|
158 | 0 | if (j < 0) |
159 | 0 | remove(i); |
160 | 0 | else if (j < s.length() - 1) |
161 | 0 | setElementAt(s.substring(0, j + 1), i); |
162 | 0 | markLiteral(); |
163 | 0 | } |
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final public void eatOneWs () |
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{ |
167 | |
int i, j; |
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|
169 | 1246 | i = size() - 1; |
170 | 1246 | if (i < 0 || i + 1 == literalMark) |
171 | 0 | return; |
172 | |
|
173 | 1246 | Object o = elementAt(i); |
174 | 1246 | if (!(o instanceof String)) |
175 | 200 | return; |
176 | 1046 | String s = (String) o; |
177 | 1046 | j = eatOneWs(s, s.length() - 1); |
178 | |
|
179 | 1046 | if (j < 0) |
180 | 8 | remove(i); |
181 | 1038 | else if (j < s.length() - 1) |
182 | 538 | setElementAt(s.substring(0, j + 1), i); |
183 | 1046 | markLiteral(); |
184 | 1046 | } |
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final public void eatLeadingWsNl () |
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{ |
188 | |
int i, j, l; |
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|
190 | 0 | i = size() - 1; |
191 | 0 | if (i < 0 || i + 1 == literalMark) |
192 | 0 | return; |
193 | |
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194 | 0 | Object o = elementAt(i); |
195 | 0 | if (!(o instanceof String)) |
196 | 0 | return; |
197 | 0 | String s = (String) o; |
198 | 0 | j = 0; |
199 | 0 | l = s.length(); |
200 | 0 | while (j < l && isSpaceChar(s.charAt(j))) |
201 | 0 | j++; |
202 | 0 | if (j < l) |
203 | |
{ |
204 | 0 | if (s.charAt(j) == '\r') |
205 | 0 | j++; |
206 | 0 | else if (s.charAt(j) == '\n') |
207 | |
{ |
208 | 0 | j++; |
209 | 0 | if (j < l && s.charAt(j) == '\r') |
210 | 0 | j++; |
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} |
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} |
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|
214 | 0 | if (j >= l) |
215 | 0 | remove(i); |
216 | 0 | else if (j > 0) |
217 | 0 | setElementAt(s.substring(j), i); |
218 | 0 | markLiteral(); |
219 | 0 | } |
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final public boolean directiveOk () |
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{ |
223 | 8554 | if (size() == 0 || size() == literalMark) |
224 | 336 | return true; |
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else |
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{ |
227 | 8218 | Object o = elementAt(size() - 1); |
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235 | 8218 | if (!(o instanceof String) || (((String)o).length() == 0)) |
236 | 162 | return true; |
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else |
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{ |
239 | 8056 | String s = (String) o; |
240 | 8056 | char ch = s.charAt(s.length() - 1); |
241 | 8056 | if (ch == '=' || ch == '\'' || ch == '\"' || ch == ':' |
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|| Character.isLetterOrDigit(ch)) |
243 | 62 | return false; |
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} |
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} |
246 | 7994 | return true; |
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} |
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} |