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annotate src/goodjava/html/Css.java @ 1715:ad44e849c60c

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add String.regex_compile
author Franklin Schmidt <fschmidt@gmail.com>
date Sat, 23 Jul 2022 21:53:04 -0600
parents 31a82b0d0a87
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 package goodjava.html;
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3 import java.util.Map;
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4 import java.util.LinkedHashMap;
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5 import goodjava.parser.Parser;
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7
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8 public final class Css {
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9
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10 public static Map<String,String> style(String text) {
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11 return new Css(text).parseStyle();
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12 }
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14 private final Parser parser;
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16 private Css(String text) {
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17 this.parser = new Parser(text);
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18 }
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20 private Map<String,String> parseStyle() {
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21 Map<String,String> map = new LinkedHashMap<String,String>();
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22 while( matchSpace() );
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23 while( !parser.endOfInput() ) {
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24 int start = parser.currentIndex();
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25 if( !matchPropertyChar() )
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26 return null;
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27 while( matchPropertyChar() );
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28 String prop = parser.textFrom(start).toLowerCase();
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30 while( matchSpace() );
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31 if( !parser.match(':') )
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32 return null;
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34 start = parser.currentIndex();
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35 while( !parser.endOfInput() && parser.noneOf(";") );
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36 String val = parser.textFrom(start).trim();
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38 map.put(prop,val);
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39 parser.match(';');
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40 while( matchSpace() );
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41 }
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42 return map;
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43 }
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45 private boolean matchPropertyChar() {
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46 return parser.inCharRange('a','z')
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47 || parser.inCharRange('A','Z')
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48 || parser.inCharRange('0','9')
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49 || parser.anyOf("_-")
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50 ;
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51 }
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53 private boolean matchSpace() {
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54 return parser.anyOf(" \t\r\n");
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55 }
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57 }