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// This Source Code is in the Public Domain per: http://litesoft.org/License.txt package org.litesoft.core.util; import org.litesoft.core.simpletypes.nonpublic.*; import org.litesoft.core.typeutils.*; /** * Email address as specified by <a href="http://www.ietf.org/rfc/rfc2822.txt">RFC 2822, "Internet Message Format"</a> * constrained to "global" addresses (must be a Secondary Level Domain, AND the Top Level Domain must be only letters). * <p/> * In addition only the "dot-atom" forms (with out the [CFWS]) of the "local-part" and "domain" are supported! */ public class EmailAddress extends CompareSupport<EmailAddress> { private final String mLocalPart, mDomain; public EmailAddress( String pLocalPart, String pDomain ) throws IllegalArgumentException { mLocalPart = Strings.deNull( pLocalPart ).trim(); mDomain = Strings.deNull( pDomain ).trim().toLowerCase(); validate(); } public EmailAddress( String pAddress ) throws IllegalArgumentException { int zAt = (pAddress = Strings.deNull( pAddress )).indexOf( '@' ); if ( zAt == -1 ) { throw new IllegalArgumentException( "No Local-part / Domain separator ('@')" ); } mLocalPart = pAddress.substring( 0, zAt ).trim(); mDomain = pAddress.substring( zAt + 1 ).trim().toLowerCase(); validate(); } public String getLocalPart() { return mLocalPart; } public String getDomain() { return mDomain; } @Override public boolean equals( Object o ) { return (this == o) || // ((o instanceof EmailAddress) && equals( (EmailAddress) o )); } public boolean equals( EmailAddress them ) { return (this == them) || // ((them != null) // && equal( this.mLocalPart, them.mLocalPart ) // && equal( this.mDomain, them.mDomain ) // ); } @Override public int hashCode() { return hashCodeEm( mLocalPart.hashCode(), mDomain.hashCode() ); } @Override public int compareTo( EmailAddress them ) { return compareEm( compare( this.mLocalPart, them.mLocalPart ), // compare( this.mDomain, them.mDomain ) ); } @Override public String toString() { return mLocalPart + "@" + mDomain; } private void validate() throws IllegalArgumentException { validateDomain(); validateDotAtomText( "Local-part", mLocalPart ); } private void validateDomain() throws IllegalArgumentException { validateDotAtomText( "Domain", mDomain ); int zAt = mDomain.lastIndexOf( '.' ); if ( zAt == -1 ) { throw new IllegalArgumentException( "TLD only Domain" ); } if ( !Strings.isAll7BitAsciiAlpha( mDomain.substring( zAt + 1 ), 1 ) ) { throw new IllegalArgumentException( "Domain TLD not all Ascii Alpha" ); } } private void validateDotAtomText( String pWhat, String pText ) { if ( pText.length() == 0 ) { throw new IllegalArgumentException( "No " + pWhat ); } if ( !isDotAtomText( pText ) ) { throw new IllegalArgumentException( pWhat + " format" ); } } private boolean isDotAtomText( String pText ) { int zFrom = 0; for ( int zTo; -1 != (zTo = pText.indexOf( '.', zFrom )); zFrom = zTo + 1 ) { if ( !isAText( pText.substring( zFrom, zTo ) ) ) { return false; } } return isAText( pText.substring( zFrom ) ); } private boolean isAText( String pText ) { if ( pText.length() == 0 ) { return false; } for ( int i = 0; i < pText.length(); i++ ) { if ( !isAText( pText.charAt( i ) ) ) { return false; } } return true; } private boolean isAText( char c ) { return !isCtrl( c ) && (c != ' ') && !isSpecials( c ); } private boolean isCtrl( char c ) { return (c < ' ') || (c == 127); } private boolean isSpecials( char c ) { return "()<>[]:;,.@\\\"".indexOf( c ) != -1; } } |