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- Committer: edam
- Date: 2012-12-21 14:51:26 UTC
- Revision ID: tim@ed.am-20121221145126-l30l0yii8xkqs1m2
added a new class to VcardImporter, a ContentLine, which represents the data returned by the ContentLineIterator (including whether the next line looks folded, and the ability to generate/cache a US-ASCII String of the line)
- files modified:
- src/am/ed/importcontacts/VcardImporter.java
added
removed
src/am/ed/importcontacts/VcardImporter.java
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// import
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importVCardFileContent( content, file.getName() );
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}
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catch( OutOfMemoryError e ) {
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showError( R.string.error_outofmemory );
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}
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catch( FileNotFoundException e ) {
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showError( getText( R.string.error_filenotfound ) +
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file.getName() );
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ContentLineIterator cli = new ContentLineIterator( content );
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while( cli.hasNext() )
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{
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ByteBuffer buffer = cli.next();
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ContentLine content_line = cli.next();
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// get a US-ASCII version of the line for processing
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String line;
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try {
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line = new String( buffer.array(), buffer.position(),
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buffer.limit() - buffer.position(), "US-ASCII" );
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}
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catch( UnsupportedEncodingException e ) {
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// we know US-ASCII *is* supported, so appease the compiler...
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line = "";
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}
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// get a US-ASCII version of the string, for processing
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String line = content_line.getUsAsciiLine();
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if( vcard == null ) {
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// look for vcard beginning
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{
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// try giving the line to the vcard
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try {
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vcard.parseLine( buffer, line,
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cli.doesNextLineLookFolded() );
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vcard.parseLine( content_line );
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}
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catch( Vcard.ParseException e ) {
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skipContact();
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}
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}
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class ContentLineIterator implements Iterator< ByteBuffer >
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class ContentLine
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{
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private ByteBuffer _buffer;
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private boolean _folded_next;
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private String _line;
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public ContentLine( ByteBuffer buffer, boolean folded_next )
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{
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_buffer = buffer;
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_folded_next = folded_next;
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_line = null;
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}
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public ByteBuffer getBuffer()
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{
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return _buffer;
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}
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public boolean doesNextLineLookFolded()
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{
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return _folded_next;
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}
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public String getUsAsciiLine()
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{
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// generated line and cache it
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if( _line == null ) {
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try {
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_line = new String( _buffer.array(), _buffer.position(),
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_buffer.limit() - _buffer.position(), "US-ASCII" );
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}
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catch( UnsupportedEncodingException e ) {
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// we know US-ASCII *is* supported, so appease the
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// compiler...
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}
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}
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// return cached line
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return _line;
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}
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}
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class ContentLineIterator implements Iterator< ContentLine >
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{
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protected byte[] _content = null;
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protected int _pos = 0;
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}
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@Override
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public ByteBuffer next()
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public ContentLine next()
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{
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int initial_pos = _pos;
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_pos > initial_pos )? _pos - 1 : _pos;
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_pos++;
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_line++;
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return ByteBuffer.wrap( _content, initial_pos,
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to - initial_pos );
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return new ContentLine(
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ByteBuffer.wrap( _content, initial_pos,
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to - initial_pos ),
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doesNextLineLookFolded() );
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}
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// we didn't find one, but were there bytes left?
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int to = _pos;
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_pos++;
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_line++;
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return ByteBuffer.wrap( _content, initial_pos,
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to - initial_pos );
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return new ContentLine(
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ByteBuffer.wrap( _content, initial_pos,
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to - initial_pos ),
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doesNextLineLookFolded() );
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}
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// no bytes left
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* onto the end of this one?
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* @return
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*/
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public boolean doesNextLineLookFolded()
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private boolean doesNextLineLookFolded()
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{
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return _pos > 0 && _pos < _content.length &&
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_content[ _pos - 1 ] == '\n' &&
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private final static int MULTILINE_FOLDED = 3; // MIME-DIR folding
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private String _version = null;
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private Vector< ByteBuffer > _buffers = null;
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private Vector< ContentLine > _content_lines = null;
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private int _name_level = NAMELEVEL_NONE;
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private int _parser_multiline_state = MULTILINE_NONE;
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private String _parser_current_name_and_params = null;
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@SuppressWarnings("serial")
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protected class SkipImportException extends Exception { }
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private String extractCollonPartFromLine( ByteBuffer buffer,
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String line, boolean former )
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private String extractCollonPartFromLine( ContentLine content_line,
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boolean former )
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{
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String ret = null;
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// get a US-ASCII version of the line for processing, unless we were
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// supplied with one
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if( line == null ) {
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try {
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line = new String( buffer.array(), buffer.position(),
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buffer.limit() - buffer.position(), "US-ASCII" );
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}
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catch( UnsupportedEncodingException e ) {
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// we know US-ASCII is supported, so appease the compiler...
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line = "";
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}
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}
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// split line into name and value parts and check to make sure we
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// only got 2 parts and that the first part is not zero in length
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String[] parts = line.split( ":", 2 );
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String[] parts = content_line.getUsAsciiLine().split( ":", 2 );
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if( parts.length == 2 && parts[ 0 ].length() > 0 )
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ret = parts[ former? 0 : 1 ];
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return ret;
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}
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private String extractNameAndParamsFromLine( ByteBuffer buffer,
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String line )
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{
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return extractCollonPartFromLine( buffer, line, true );
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}
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private String extractValueFromLine( ByteBuffer buffer, String line )
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{
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return extractCollonPartFromLine( buffer, line, false );
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}
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public void parseLine( ByteBuffer buffer, String line,
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boolean next_line_looks_folded )
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private String extractNameAndParamsFromLine( ContentLine content_line )
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{
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return extractCollonPartFromLine( content_line, true );
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}
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private String extractValueFromLine( ContentLine content_line )
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{
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return extractCollonPartFromLine( content_line, false );
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}
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public void parseLine( ContentLine content_line )
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throws ParseException, SkipImportException,
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AbortImportException
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{
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{
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// tentatively get name and params from line
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String name_and_params =
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extractNameAndParamsFromLine( buffer, line );
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extractNameAndParamsFromLine( content_line );
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// is it a version line?
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if( name_and_params != null &&
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name_and_params.equalsIgnoreCase( "VERSION" ) )
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{
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// yes, get it!
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String value = extractValueFromLine( buffer, line );
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String value = extractValueFromLine( content_line );
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if( !value.equals( "2.1" ) && !value.equals( "3.0" ) )
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throw new ParseException( R.string.error_vcf_version );
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_version = value;
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// parse any buffers we've been accumulating while we waited
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// for a version
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if( _buffers != null )
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for( int i = 0; i < _buffers.size(); i++ )
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parseLine( _buffers.get( i ), null,
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i + 1 < _buffers.size() &&
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_buffers.get( i + 1 ).hasRemaining() &&
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_buffers.get( i + 1 ).get(
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_buffers.get( i + 1 ).position() ) == ' ' );
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_buffers = null;
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if( _content_lines != null )
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for( int i = 0; i < _content_lines.size(); i++ )
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parseLine( _content_lines.get( i ) );
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_content_lines = null;
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}
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else
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{
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// no, so stash this line till we get a version
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if( _buffers == null )
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_buffers = new Vector< ByteBuffer >();
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_buffers.add( buffer );
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if( _content_lines == null )
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_content_lines = new Vector< ContentLine >();
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_content_lines.add( content_line );
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}
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}
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else
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// skip some initial line characters, depending on the type
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// of multi-line we're handling
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pos = buffer.position();
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pos = content_line.getBuffer().position();
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switch( _parser_multiline_state )
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{
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case MULTILINE_FOLDED:
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pos++;
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break;
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case MULTILINE_ENCODED:
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while( pos < buffer.limit() && (
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buffer.get( pos ) == ' ' ||
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buffer.get( pos ) == '\t' ) )
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while( pos < content_line.getBuffer().limit() && (
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content_line.getBuffer().get( pos ) == ' ' ||
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content_line.getBuffer().get( pos ) == '\t' ) )
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{
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pos++;
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}
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else
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{
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// skip empty lines
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if( line.trim().length() == 0 ) return;
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if( content_line.getUsAsciiLine().trim().length() == 0 )
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return;
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// get name and params from line, and since we're not
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// parsing a subsequent line in a multi-line, this should
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// not fail, or it's an error
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name_and_params =
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extractNameAndParamsFromLine( buffer, line );
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extractNameAndParamsFromLine( content_line );
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if( name_and_params == null )
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throw new ParseException(
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R.string.error_vcf_malformed );
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// calculate how many chars to skip from beginning of line
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// so we skip the property "name:" part
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pos = buffer.position() + name_and_params.length() + 1;
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pos = content_line.getBuffer().position() +
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name_and_params.length() + 1;
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// reset the saved multi-line state
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_parser_current_name_and_params = name_and_params;
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// get value from buffer, as raw bytes
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ByteBuffer value;
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value = ByteBuffer.wrap( buffer.array(), pos,
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buffer.limit() - pos );
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value = ByteBuffer.wrap( content_line.getBuffer().array(), pos,
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content_line.getBuffer().limit() - pos );
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// get parameter parts
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String[] name_param_parts = name_and_params.split( ";", -1 );
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// if we know we're not in an encoding-based multi-line, check
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// to see if we're in a folded multi-line
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if( _parser_multiline_state == MULTILINE_NONE &&
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next_line_looks_folded )
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content_line.doesNextLineLookFolded() )
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{
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_parser_multiline_state = MULTILINE_FOLDED;
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}
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throws ParseException, ContactNotIdentifiableException
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{
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// missing version (and data is present)
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if( _version == null && _buffers != null )
1030
if( _version == null && _content_lines != null )
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throw new ParseException( R.string.error_vcf_malformed );
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// finalise the parent class
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