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package tsukuba_bunko.peko.scenario; |
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import java.util.StringTokenizer; |
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import org.xml.sax.Attributes; |
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import tsukuba_bunko.peko.Logger; |
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import tsukuba_bunko.peko.scenario.SceneContext; |
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public final class PSMLUtil { |
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private PSMLUtil() |
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{ |
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} |
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public static String removeISOControlChar( String string ) |
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{ |
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if( (string == null) || (string.length() == 0) ) { |
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return string; |
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} |
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int beginIndex = -1; |
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boolean isISOControlCharSequence = false; |
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int length = string.length(); |
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StringBuffer buffer = null; |
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for( int current = 0; current < length; ++current ) { |
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if( Character.isISOControl(string.charAt(current)) ) { |
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if( !isISOControlCharSequence ) { |
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if( buffer == null ) { |
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if( current == 0 ) { |
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buffer = new StringBuffer(); |
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} |
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else { |
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buffer = new StringBuffer( string.substring(0, current) ); |
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} |
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} |
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else { |
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buffer.append( string.substring(beginIndex, current) ); |
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} |
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isISOControlCharSequence = true; |
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beginIndex = -1; |
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} |
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} |
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else { |
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if( isISOControlCharSequence ) { |
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beginIndex = current; |
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isISOControlCharSequence = false; |
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} |
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} |
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} |
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if( beginIndex != -1 ) { |
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buffer.append( string.substring(beginIndex) ); |
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} |
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if( buffer != null ) { |
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return new String( buffer ); |
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} |
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else { |
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return string; |
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} |
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} |
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public static String getAttributeValue( Attributes attrs, String localName ) |
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{ |
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String value = attrs.getValue( ElementHandler.NAMESPACE_SCENE, localName ); |
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if( value == null ) { |
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value = attrs.getValue( localName ); |
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} |
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if( (value == null) || (value.length() == 0) ) { |
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return null; |
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} |
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else { |
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value = PSMLUtil.removeISOControlChar(value).trim(); |
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if( value.length() == 0 ) { |
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Logger.warn( MessageIDs.SCN0011W, new Object[]{localName} ); |
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return null; |
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} |
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else { |
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return value; |
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} |
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} |
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} |
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public static final boolean isEvaluatable( Attributes attrs, SceneContext context ) |
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{ |
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return isEvaluatable( PSMLUtil.getAttributeValue(attrs, "test"), context ); |
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} |
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public static final boolean isEvaluatable( String target, SceneContext context ) |
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{ |
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if( (target == null) || (target.length() == 0) ) { |
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return true; |
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} |
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else if( context == null ) { |
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return false; |
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} |
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else { |
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boolean result = false; |
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boolean multiple = (target.charAt(0) == '['); |
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boolean inBracket = false; |
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boolean individualResult = true; |
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StringTokenizer st = new StringTokenizer( target, "[],", true ); |
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String token = null; |
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String lastToken = null; |
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int position = 0; |
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while( st.hasMoreTokens() ) { |
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lastToken = token; |
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token = st.nextToken(); |
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position += token.length(); |
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token = token.trim(); |
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if( !multiple ) { |
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if( "[".equals(token) || "]".equals(token) ) { |
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Logger.warn( MessageIDs.SCN0008W, new Object[]{String.valueOf(position), token} ); |
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return false; |
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} |
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else if( !",".equals(token) ) { |
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if( token.charAt(0) == '!' ) { |
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if( token.length() == 1 ) { |
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Logger.warn( MessageIDs.SCN0008W, new Object[]{String.valueOf(position), token} ); |
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return false; |
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} |
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token = token.substring( 1 ); |
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individualResult = individualResult && !context.isDeclaredFlag(token); |
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} |
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else { |
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individualResult = individualResult && context.isDeclaredFlag(token); |
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} |
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} |
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} |
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else { |
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if( inBracket ) { |
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if( "]".equals(token) ) { |
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if( (lastToken != null) && ",".equals(lastToken) ) { |
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Logger.warn( MessageIDs.SCN0008W, new Object[]{String.valueOf(position), token} ); |
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return false; |
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} |
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else { |
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result = result || individualResult; |
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individualResult = true; |
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inBracket = false; |
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} |
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} |
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else if( !",".equals(token) ) { |
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if( token.charAt(0) == '!' ) { |
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if( token.length() == 1 ) { |
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Logger.warn( MessageIDs.SCN0008W, new Object[]{String.valueOf(position), token} ); |
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return false; |
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} |
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token = token.substring( 1 ); |
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individualResult = individualResult && !context.isDeclaredFlag(token); |
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} |
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else { |
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individualResult = individualResult && context.isDeclaredFlag(token); |
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} |
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} |
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} |
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else { |
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if( "[".equals(token) ) { |
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inBracket = true; |
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} |
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else { |
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Logger.warn( MessageIDs.SCN0008W, new Object[]{String.valueOf(position), token} ); |
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return false; |
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} |
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} |
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} |
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} |
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if( multiple ) { |
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if( !"]".equals(token) ) { |
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Logger.warn( MessageIDs.SCN0008W, new Object[]{String.valueOf(position), token} ); |
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return false; |
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} |
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} |
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else { |
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if( ",".equals(token) ) { |
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Logger.warn( MessageIDs.SCN0008W, new Object[]{String.valueOf(position), token} ); |
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return false; |
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} |
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else { |
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result = individualResult; |
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} |
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} |
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return result; |
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} |
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} |
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} |