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18
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: src/org/waxworlds/edam/importcontacts/VCFImporter.java
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- Committer: edam
- Date: 2010-10-17 18:43:13 UTC
- Revision ID: edam@waxworlds.org-20101017184313-y2m6gsdzctjq5wtl
- changed case on charset and encoding warning strings (it looked bad)
- properly handle quoted-printable unencoding (including multi-line values)
- ignore blank lines in vCard
- ignore empty properties in vCard
- properly handle quoted-printable unencoding (including multi-line values)
- ignore blank lines in vCard
- ignore empty properties in vCard
added
removed
src/org/waxworlds/edam/importcontacts/VCFImporter.java
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// open directory
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String location = prefs.getString( "location", "" );
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File dir = new File( location );
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if( !dir.exists() || !dir.isDirectory() )
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if( !dir.exists() )
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showError( R.string.error_locationnotfound );
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// get files
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class VCardFilter implements FilenameFilter {
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public boolean accept( File dir, String name ) {
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return name.toLowerCase().endsWith( ".vcf" );
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// directory, or file?
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if( dir.isDirectory() )
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{
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// get files
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class VCardFilter implements FilenameFilter {
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public boolean accept( File dir, String name ) {
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return name.toLowerCase().endsWith( ".vcf" );
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}
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}
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}
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files = dir.listFiles( new VCardFilter() );
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files = dir.listFiles( new VCardFilter() );
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}
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else
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{
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// use just this file
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files = new File[ 1 ];
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files[ 0 ] = dir;
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}
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}
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catch( SecurityException e ) {
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showError( R.string.error_locationpermissions );
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}
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catch( FileNotFoundException e ) {
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showError( getText( R.string.error_filenotfound ) + file.getName() );
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showError( getText( R.string.error_filenotfound ) +
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file.getName() );
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}
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catch( IOException e ) {
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showError( getText( R.string.error_ioerror ) + file.getName() );
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importVCardFileContent( content.toString(), file.getName() );
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}
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catch( FileNotFoundException e ) {
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showError( getText( R.string.error_filenotfound ) + file.getName() );
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showError( getText( R.string.error_filenotfound ) +
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file.getName() );
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}
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catch( IOException e ) {
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showError( getText( R.string.error_ioerror ) + file.getName() );
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private void importVCardFileContent( String content, String fileName )
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throws AbortImportException
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{
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// unfold RFC2425 section 5.8.1 folded lines, except that we must also
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// handle embedded Quoted-Printable encodings that have a trailing '='.
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// So we remove these first before doing RFC2425 unfolding.
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content = content.replaceAll( "=\n[ \\t]", "" )
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.replaceAll( "\n[ \\t]", "" );
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// get lines and parse them
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String[] lines = content.split( "\n" );
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VCard vCard = null;
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private String _version = null;
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private Vector< String > _lines = null;
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private int _nameLevel = NAMELEVEL_NONE;
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private int _name_level = NAMELEVEL_NONE;
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private boolean _parser_in_multiline = false;
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private String _parser_current_name_and_params = null;
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private String _parser_buffered_value_so_far = "";
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protected class UnencodeResult
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{
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private boolean _another_line_required;
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private byte[] _bytes;
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private int _num_bytes;
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public UnencodeResult( boolean another_line_required, byte[] bytes,
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int num_bytes )
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{
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_another_line_required = another_line_required;
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_bytes = bytes;
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_num_bytes = num_bytes;
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}
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public boolean isAnotherLineRequired()
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{
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return _another_line_required;
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}
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public byte[] getBytes()
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{
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return _bytes;
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}
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public int getNumBytes()
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{
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return _num_bytes;
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}
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}
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@SuppressWarnings("serial")
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protected class ParseException extends Exception
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throws ParseException, SkipContactException,
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AbortImportException
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{
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// get property halves
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String[] props = line.split( ":" );
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// ignore empty lines
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if( line.trim() == "" ) return;
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// split line into name and value parts (this may turn out to be
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// unwanted if the line is a subsequent line in a multi-line
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// value, but we have to do this now to check for and handle VCF
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// versions first)
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String[] props = line.split( ":", 2 );
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for( int i = 0; i < props.length; i++ )
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props[ i ] = props[ i ].trim();
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if( props.length < 2 ||
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props[ 0 ].length() < 1 || props[ 1 ].length() < 1 )
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throw new ParseException( R.string.error_vcf_malformed );
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// if we haven't yet got a version, we won't be paring anything!
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if( _version == null )
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{
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if( props[ 0 ].equals( "VERSION" ) )
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// is this a version?
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if( props.length == 2 && props[ 0 ].equals( "VERSION" ) )
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{
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// get version
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// yes, check/store it
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if( !props[ 1 ].equals( "2.1" ) &&
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!props[ 1 ].equals( "3.0" ) )
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throw new ParseException( R.string.error_vcf_version );
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}
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else
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{
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// stash this line till we have a version
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// no, so stash this line till we have a version
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if( _lines == null )
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_lines = new Vector< String >();
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_lines.add( line );
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}
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else
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{
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if( _parser_in_multiline )
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{
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// if we're currently in a multi-line value, use the stored
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// property name and parameters
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props = new String[ 2 ];
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props[ 0 ] = _parser_current_name_and_params;
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props[ 1 ] = line.trim();
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}
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else
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{
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// for normal lines, check the property name/value bits
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if( props.length < 2 || props[ 0 ].length() == 0 )
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throw new ParseException(
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R.string.error_vcf_malformed );
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// ignore empty properties
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if( props[ 1 ].length() < 1 )
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return;
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// reset the saved multi-line state
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_parser_current_name_and_params = props[ 0 ];
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_parser_buffered_value_so_far = "";
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}
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// get parameter parts
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String[] params = props[ 0 ].split( ";" );
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for( int i = 0; i < params.length; i++ )
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params[ i ] = params[ i ].trim();
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// parse charset and encoding parameters
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String charset, encoding;
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if( ( charset = checkParam( params, "CHARSET" ) ) != null &&
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!charset.equals( "UTF-8" ) && !charset.equals( "UTF-16" ) )
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{
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throw new ParseException( R.string.error_vcf_charset );
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}
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if( ( encoding = checkParam( params, "ENCODING" ) ) != null &&
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!encoding.equals( "QUOTED-PRINTABLE" ) &&
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!encoding.equals( "8BIT" ) )
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//&& !encoding.equals( "BASE64" ) )
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{
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throw new ParseException( R.string.error_vcf_encoding );
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}
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// do unencoding (or default to a fake unencoding result with
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// the raw string)
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UnencodeResult result;
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if( encoding != null && encoding.equals( "QUOTED-PRINTABLE" ) )
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result = unencodeQuotedPrintable( props[ 1 ], charset );
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// else if( encoding != null && encoding.equals( "BASE64" ) )
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// result = unencodeBase64( props[ 1 ], charset );
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else
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result = new UnencodeResult( false, props[ 1 ].getBytes(),
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props[ 1 ].getBytes().length );
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// process charset
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try {
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props[ 1 ] = new String( result.getBytes(), 0,
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result.getNumBytes(),
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charset == null? "UTF-8" : charset );
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} catch( UnsupportedEncodingException e ) {
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throw new ParseException( R.string.error_vcf_charset );
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}
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// handle multi-line requests
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_parser_in_multiline = result.isAnotherLineRequired();
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if( _parser_in_multiline ) {
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_parser_buffered_value_so_far += props[ 1 ];
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return;
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}
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// add on buffered multi-line content
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String value = _parser_buffered_value_so_far + props[ 1 ];
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// parse some properties
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if( params[ 0 ].equals( "N" ) )
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parseN( params, props[ 1 ] );
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parseN( params, value );
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else if( params[ 0 ].equals( "FN" ) )
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parseFN( params, props[ 1 ] );
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parseFN( params, value );
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else if( params[ 0 ].equals( "ORG" ) )
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parseORG( params, props[ 1 ] );
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parseORG( params, value );
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else if( params[ 0 ].equals( "TEL" ) )
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parseTEL( params, props[ 1 ] );
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parseTEL( params, value );
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else if( params[ 0 ].equals( "EMAIL" ) )
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parseEMAIL( params, props[ 1 ] );
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parseEMAIL( params, value );
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}
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}
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AbortImportException
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{
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// already got a better name?
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if( _nameLevel >= NAMELEVEL_N ) return;
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if( _name_level >= NAMELEVEL_N ) return;
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// get name parts
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String[] nameparts = value.split( ";" );
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value += ( value.length() == 0? "" : " " ) + nameparts[ 0 ];
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// set name
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setName( undoCharsetAndEncoding( params, value ) );
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_nameLevel = NAMELEVEL_N;
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setName( value );
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_name_level = NAMELEVEL_N;
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// check now to see if we need to import this contact (to avoid
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// parsing the rest of the vCard unnecessarily)
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throws ParseException, SkipContactException
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{
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// already got a better name?
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if( _nameLevel >= NAMELEVEL_FN ) return;
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if( _name_level >= NAMELEVEL_FN ) return;
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// set name
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setName( undoCharsetAndEncoding( params, value ) );
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_nameLevel = NAMELEVEL_FN;
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setName( value );
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_name_level = NAMELEVEL_FN;
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}
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private void parseORG( String[] params, String value )
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throws ParseException, SkipContactException
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{
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// already got a better name?
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if( _nameLevel >= NAMELEVEL_ORG ) return;
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if( _name_level >= NAMELEVEL_ORG ) return;
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// get org parts
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String[] orgparts = value.split( ";" );
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value = orgparts[ 0 ];
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// set name
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setName( undoCharsetAndEncoding( params, value ) );
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_nameLevel = NAMELEVEL_ORG;
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setName( value );
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_name_level = NAMELEVEL_ORG;
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}
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private void parseTEL( String[] params, String value )
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}
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public void parseEMAIL( String[] params, String value )
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throws ParseException
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{
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if( value.length() == 0 ) return;
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throw new ParseException( R.string.error_vcf_malformed );
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// missing name properties?
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if( _nameLevel == NAMELEVEL_NONE )
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if( _name_level == NAMELEVEL_NONE )
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throw new ParseException( R.string.error_vcf_noname );
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// check if we should import this one? If we've already got an 'N'-
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// type name, this will already have been done by parseN() so we
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// mustn't do this here (or it could prompt twice!)
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if( _nameLevel < NAMELEVEL_N && !isImportRequired( getName() ) )
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if( _name_level < NAMELEVEL_N && !isImportRequired( getName() ) )
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throw new SkipContactException();
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}
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private String undoCharsetAndEncoding( String[] params, String value )
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throws ParseException
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{
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// check encoding/charset
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String charset, encoding;
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if( ( charset = checkParam( params, "CHARSET" ) ) != null &&
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!charset.equals( "UTF-8" ) && !charset.equals( "UTF-16" ) )
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throw new ParseException( R.string.error_vcf_charset );
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if( ( encoding = checkParam( params, "ENCODING" ) ) != null &&
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!encoding.equals( "QUOTED-PRINTABLE" ) )
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throw new ParseException( R.string.error_vcf_encoding );
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// do decoding?
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if( encoding != null && encoding.equals( "QUOTED-PRINTABLE" ) )
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return unencodeQuotedPrintable( value, charset );
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// nothing to do!
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return value;
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}
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private String checkParam( String[] params, String name )
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{
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Pattern p = Pattern.compile( "^" + name + "[ \\t]*=[ \\t]*(.*)$" );
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return types;
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}
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private String unencodeQuotedPrintable( String str, String charset )
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private UnencodeResult unencodeQuotedPrintable( String str, String charset )
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{
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boolean another = false;
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// default encoding scheme
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if( charset == null ) charset = "UTF-8";
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// unencode quoted-pritable encoding, as per RFC1521 section 5.1
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byte[] bytes = new byte[ str.length() ];
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int j = 0;
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for( int i = 0; i < str.length(); i++, j++ ) {
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for( int i = 0; i < str.length(); i++ )
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{
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// get next char and process...
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char ch = str.charAt( i );
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if( ch == '=' && i < str.length() - 2 ) {
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if( ch == '=' && i < str.length() - 2 )
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{
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// we found a =XX format byte, add it
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bytes[ j ] = (byte)(
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Character.digit( str.charAt( i + 1 ), 16 ) * 16 +
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Character.digit( str.charAt( i + 2 ), 16 ) );
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i += 2;
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}
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else if( ch == '=' && i == str.length() - 1 )
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{
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// we found a '=' at the end of a line signifying a multi-
619
// line string, so we don't add it.
620
another = true;
621
continue;
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}
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else
624
// just a normal char...
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bytes[ j ] = (byte)ch;
626
j++;
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}
519
try {
520
return new String( bytes, 0, j, charset );
521
} catch( UnsupportedEncodingException e ) { }
522
return null;
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return new UnencodeResult( another, bytes, j );
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}
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}
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}
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