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100 lines
2.5 KiB
Java
100 lines
2.5 KiB
Java
package com.ctreber.acearth.util;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* <p>Cuts a string in words separated by white space. Quotes and square
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* brackets are recognized (that is, white space within is ignored).
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*
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* <p>© 2002 Christian Treber, ct@ctreber.com
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* @author Christian Treber, ct@ctreber.com
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*
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*/
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public class StringParser
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{
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public static List parse(String pLine)
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{
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final List lSections = new ArrayList();
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// True if within word.
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boolean lInSectionP = false;
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// Current char
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char lChar;
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// Wait for this character before switching back to normal parsing.
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char lSeparator = ' ';
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// Part count.
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int lSectionNo = 0;
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// Part start position
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int lSectionStart = 0;
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// Part end position
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int lSectionEnd = 0;
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final int lLen = pLine.length();
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for(int lCharNo = 0; lCharNo <= lLen; lCharNo++)
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{
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if(lCharNo < lLen)
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{
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lChar = pLine.charAt(lCharNo);
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} else
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{
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// This is a fictional last character.
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lChar = ' ';
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}
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if(lInSectionP)
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{
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// In section. Termination is by space or specific separator.
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if((lChar != ' ') || (lSeparator != ' '))
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{
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// It's not a space, or it is a space, but we wait for a special separator.
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if(lChar == lSeparator)
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{
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// We waited for this separator. Switch back to normal parsing.
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lSeparator = ' ';
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lSectionEnd = lCharNo - 1;
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} else
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{
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lSectionEnd = lCharNo;
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}
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} else
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{
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// Section has ended (with a space).
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lSections.add(pLine.substring(lSectionStart, lSectionEnd + 1));
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lSectionNo++;
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lInSectionP = false;
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}
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} else
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{
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// Not in a section, skipping white space.
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if(lChar != ' ')
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{
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// No white space: a section has started.
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if(lChar == '"')
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{
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// Special parsing "string"
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lSeparator = '"';
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lSectionStart = lCharNo + 1;
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} else if(lChar == '[')
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{
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// Special parsing "square brackets"
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lSeparator = ']';
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lSectionStart = lCharNo + 1;
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} else
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{
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// Use normal parsing.
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lSeparator = ' ';
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lSectionEnd = lSectionStart = lCharNo;
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}
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lInSectionP = true;
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} else
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{
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// More void...
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}
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}
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}
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return lSections;
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}
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}
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