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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; |
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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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{ |
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int i, j; |
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| 124 | 8488 | i = size() - 1; |
| 125 | 8488 | if (i < 0 || i + 1 == literalMark) |
| 126 | 332 | return; |
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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 | |
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| 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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|
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final public void eatOneWs () |
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{ |
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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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|
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final public void eatLeadingWsNl () |
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{ |
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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 | |
|
| 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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} |