diff options
Diffstat (limited to 'src/main/java/org/pdfbox/afmparser/AFMParser.java')
| -rw-r--r-- | src/main/java/org/pdfbox/afmparser/AFMParser.java | 1084 |
1 files changed, 1084 insertions, 0 deletions
diff --git a/src/main/java/org/pdfbox/afmparser/AFMParser.java b/src/main/java/org/pdfbox/afmparser/AFMParser.java new file mode 100644 index 0000000..44c594d --- /dev/null +++ b/src/main/java/org/pdfbox/afmparser/AFMParser.java @@ -0,0 +1,1084 @@ +/**
+ * Copyright (c) 2003, www.pdfbox.org
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of pdfbox; nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://www.pdfbox.org
+ *
+ */
+package org.pdfbox.afmparser;
+
+import java.io.InputStream;
+import java.io.IOException;
+
+import java.util.StringTokenizer;
+
+import org.pdfbox.afmtypes.Composite;
+import org.pdfbox.afmtypes.CompositePart;
+import org.pdfbox.afmtypes.CharMetric;
+import org.pdfbox.afmtypes.FontMetric;
+import org.pdfbox.afmtypes.KernPair;
+import org.pdfbox.afmtypes.Ligature;
+import org.pdfbox.afmtypes.TrackKern;
+
+import org.pdfbox.util.BoundingBox;
+
+/**
+ * This class is used to parse AFM(Adobe Font Metrics) documents.
+ *
+ * @see <A href="http://partners.adobe.com/asn/developer/type/">AFM Documentation</A>
+ *
+ * @author Ben Litchfield (ben@csh.rit.edu)
+ * @version $Revision: 1.9 $
+ */
+public class AFMParser
+{
+ /**
+ * This is a comment in a AFM file.
+ */
+ public static final String COMMENT = "Comment";
+ /**
+ * This is the constant used in the AFM file to start a font metrics item.
+ */
+ public static final String START_FONT_METRICS = "StartFontMetrics";
+ /**
+ * This is the constant used in the AFM file to end a font metrics item.
+ */
+ public static final String END_FONT_METRICS = "EndFontMetrics";
+ /**
+ * This is the font name.
+ */
+ public static final String FONT_NAME = "FontName";
+ /**
+ * This is the full name.
+ */
+ public static final String FULL_NAME = "FullName";
+ /**
+ * This is the Family name.
+ */
+ public static final String FAMILY_NAME = "FamilyName";
+ /**
+ * This is the weight.
+ */
+ public static final String WEIGHT = "Weight";
+ /**
+ * This is the font bounding box.
+ */
+ public static final String FONT_BBOX = "FontBBox";
+ /**
+ * This is the version of the font.
+ */
+ public static final String VERSION = "Version";
+ /**
+ * This is the notice.
+ */
+ public static final String NOTICE = "Notice";
+ /**
+ * This is the encoding scheme.
+ */
+ public static final String ENCODING_SCHEME = "EncodingScheme";
+ /**
+ * This is the mapping scheme.
+ */
+ public static final String MAPPING_SCHEME = "MappingScheme";
+ /**
+ * This is the escape character.
+ */
+ public static final String ESC_CHAR = "EscChar";
+ /**
+ * This is the character set.
+ */
+ public static final String CHARACTER_SET = "CharacterSet";
+ /**
+ * This is the characters attribute.
+ */
+ public static final String CHARACTERS = "Characters";
+ /**
+ * This will determine if this is a base font.
+ */
+ public static final String IS_BASE_FONT = "IsBaseFont";
+ /**
+ * This is the V Vector attribute.
+ */
+ public static final String V_VECTOR = "VVector";
+ /**
+ * This will tell if the V is fixed.
+ */
+ public static final String IS_FIXED_V = "IsFixedV";
+ /**
+ * This is the cap height attribute.
+ */
+ public static final String CAP_HEIGHT = "CapHeight";
+ /**
+ * This is the X height.
+ */
+ public static final String X_HEIGHT = "XHeight";
+ /**
+ * This is ascender attribute.
+ */
+ public static final String ASCENDER = "Ascender";
+ /**
+ * This is the descender attribute.
+ */
+ public static final String DESCENDER = "Descender";
+
+ /**
+ * The underline position.
+ */
+ public static final String UNDERLINE_POSITION = "UnderlinePosition";
+ /**
+ * This is the Underline thickness.
+ */
+ public static final String UNDERLINE_THICKNESS = "UnderlineThickness";
+ /**
+ * This is the italic angle.
+ */
+ public static final String ITALIC_ANGLE = "ItalicAngle";
+ /**
+ * This is the char width.
+ */
+ public static final String CHAR_WIDTH = "CharWidth";
+ /**
+ * This will determine if this is fixed pitch.
+ */
+ public static final String IS_FIXED_PITCH = "IsFixedPitch";
+ /**
+ * This is the start of character metrics.
+ */
+ public static final String START_CHAR_METRICS = "StartCharMetrics";
+ /**
+ * This is the end of character metrics.
+ */
+ public static final String END_CHAR_METRICS = "EndCharMetrics";
+ /**
+ * The character metrics c value.
+ */
+ public static final String CHARMETRICS_C = "C";
+ /**
+ * The character metrics c value.
+ */
+ public static final String CHARMETRICS_CH = "CH";
+ /**
+ * The character metrics value.
+ */
+ public static final String CHARMETRICS_WX = "WX";
+ /**
+ * The character metrics value.
+ */
+ public static final String CHARMETRICS_W0X = "W0X";
+ /**
+ * The character metrics value.
+ */
+ public static final String CHARMETRICS_W1X = "W1X";
+ /**
+ * The character metrics value.
+ */
+ public static final String CHARMETRICS_WY = "WY";
+ /**
+ * The character metrics value.
+ */
+ public static final String CHARMETRICS_W0Y = "W0Y";
+ /**
+ * The character metrics value.
+ */
+ public static final String CHARMETRICS_W1Y = "W1Y";
+ /**
+ * The character metrics value.
+ */
+ public static final String CHARMETRICS_W = "W";
+ /**
+ * The character metrics value.
+ */
+ public static final String CHARMETRICS_W0 = "W0";
+ /**
+ * The character metrics value.
+ */
+ public static final String CHARMETRICS_W1 = "W1";
+ /**
+ * The character metrics value.
+ */
+ public static final String CHARMETRICS_VV = "VV";
+ /**
+ * The character metrics value.
+ */
+ public static final String CHARMETRICS_N = "N";
+ /**
+ * The character metrics value.
+ */
+ public static final String CHARMETRICS_B = "B";
+ /**
+ * The character metrics value.
+ */
+ public static final String CHARMETRICS_L = "L";
+ /**
+ * The character metrics value.
+ */
+ public static final String STD_HW = "StdHW";
+ /**
+ * The character metrics value.
+ */
+ public static final String STD_VW = "StdVW";
+ /**
+ * This is the start of track kern data.
+ */
+ public static final String START_TRACK_KERN = "StartTrackKern";
+ /**
+ * This is the end of track kern data.
+ */
+ public static final String END_TRACK_KERN = "EndTrackKern";
+ /**
+ * This is the start of kern data.
+ */
+ public static final String START_KERN_DATA = "StartKernData";
+ /**
+ * This is the end of kern data.
+ */
+ public static final String END_KERN_DATA = "EndKernData";
+ /**
+ * This is the start of kern pairs data.
+ */
+ public static final String START_KERN_PAIRS = "StartKernPairs";
+ /**
+ * This is the end of kern pairs data.
+ */
+ public static final String END_KERN_PAIRS = "EndKernPairs";
+ /**
+ * This is the start of kern pairs data.
+ */
+ public static final String START_KERN_PAIRS0 = "StartKernPairs0";
+ /**
+ * This is the start of kern pairs data.
+ */
+ public static final String START_KERN_PAIRS1 = "StartKernPairs1";
+ /**
+ * This is the start compisites data section.
+ */
+ public static final String START_COMPOSITES = "StartComposites";
+ /**
+ * This is the end compisites data section.
+ */
+ public static final String END_COMPOSITES = "EndComposites";
+ /**
+ * This is a composite character.
+ */
+ public static final String CC = "CC";
+ /**
+ * This is a composite charater part.
+ */
+ public static final String PCC = "PCC";
+ /**
+ * This is a kern pair.
+ */
+ public static final String KERN_PAIR_KP = "KP";
+ /**
+ * This is a kern pair.
+ */
+ public static final String KERN_PAIR_KPH = "KPH";
+ /**
+ * This is a kern pair.
+ */
+ public static final String KERN_PAIR_KPX = "KPX";
+ /**
+ * This is a kern pair.
+ */
+ public static final String KERN_PAIR_KPY = "KPY";
+
+ private static final int BITS_IN_HEX = 16;
+
+
+ private InputStream input;
+ private FontMetric result;
+
+ /**
+ * A method to test parsing of all AFM documents in the resources
+ * directory.
+ *
+ * @param args Ignored.
+ *
+ * @throws IOException If there is an error parsing one of the documents.
+ */
+ public static void main( String[] args ) throws IOException
+ {
+ java.io.File afmDir = new java.io.File( "Resources/afm" );
+ java.io.File[] files = afmDir.listFiles();
+ for( int i=0; i< files.length; i++ )
+ {
+ if( files[i].getPath().toUpperCase().endsWith( ".AFM" ) )
+ {
+ long start = System.currentTimeMillis();
+ java.io.FileInputStream input = new java.io.FileInputStream( files[i] );
+ AFMParser parser = new AFMParser( input );
+ parser.parse();
+ long stop = System.currentTimeMillis();
+ System.out.println( "Parsing:" + files[i].getPath() + " " + (stop-start) );
+ }
+ }
+ }
+
+ /**
+ * Constructor.
+ *
+ * @param in The input stream to read the AFM document from.
+ */
+ public AFMParser( InputStream in )
+ {
+ input = in;
+ }
+
+ /**
+ * This will parse the AFM document. This will close the Input stream
+ * when the parsing is finished.
+ *
+ * @throws IOException If there is an IO error reading the document.
+ */
+ public void parse() throws IOException
+ {
+ result = parseFontMetric();
+ }
+
+ /**
+ * This will get the result of the parsing.
+ *
+ * @return The parsed java object.
+ */
+ public FontMetric getResult()
+ {
+ return result;
+ }
+
+ /**
+ * This will parse a font metrics item.
+ *
+ * @return The parse font metrics item.
+ *
+ * @throws IOException If there is an error reading the AFM file.
+ */
+ private FontMetric parseFontMetric() throws IOException
+ {
+ FontMetric fontMetrics = new FontMetric();
+ String startFontMetrics = readString();
+ if( !START_FONT_METRICS.equals( startFontMetrics ) )
+ {
+ throw new IOException( "Error: The AFM file should start with " + START_FONT_METRICS +
+ " and not '" + startFontMetrics + "'" );
+ }
+ fontMetrics.setAFMVersion( readFloat() );
+ String nextCommand = null;
+ while( !END_FONT_METRICS.equals( (nextCommand = readString() ) ) )
+ {
+ if( FONT_NAME.equals( nextCommand ) )
+ {
+ fontMetrics.setFontName( readLine() );
+ }
+ else if( FULL_NAME.equals( nextCommand ) )
+ {
+ fontMetrics.setFullName( readLine() );
+ }
+ else if( FAMILY_NAME.equals( nextCommand ) )
+ {
+ fontMetrics.setFamilyName( readLine() );
+ }
+ else if( WEIGHT.equals( nextCommand ) )
+ {
+ fontMetrics.setWeight( readLine() );
+ }
+ else if( FONT_BBOX.equals( nextCommand ) )
+ {
+ BoundingBox bBox = new BoundingBox();
+ bBox.setLowerLeftX( readFloat() );
+ bBox.setLowerLeftY( readFloat() );
+ bBox.setUpperRightX( readFloat() );
+ bBox.setUpperRightY( readFloat() );
+ fontMetrics.setFontBBox( bBox );
+ }
+ else if( VERSION.equals( nextCommand ) )
+ {
+ fontMetrics.setFontVersion( readLine() );
+ }
+ else if( NOTICE.equals( nextCommand ) )
+ {
+ fontMetrics.setNotice( readLine() );
+ }
+ else if( ENCODING_SCHEME.equals( nextCommand ) )
+ {
+ fontMetrics.setEncodingScheme( readLine() );
+ }
+ else if( MAPPING_SCHEME.equals( nextCommand ) )
+ {
+ fontMetrics.setMappingScheme( readInt() );
+ }
+ else if( ESC_CHAR.equals( nextCommand ) )
+ {
+ fontMetrics.setEscChar( readInt() );
+ }
+ else if( CHARACTER_SET.equals( nextCommand ) )
+ {
+ fontMetrics.setCharacterSet( readLine() );
+ }
+ else if( CHARACTERS.equals( nextCommand ) )
+ {
+ fontMetrics.setCharacters( readInt() );
+ }
+ else if( IS_BASE_FONT.equals( nextCommand ) )
+ {
+ fontMetrics.setIsBaseFont( readBoolean() );
+ }
+ else if( V_VECTOR.equals( nextCommand ) )
+ {
+ float[] vector = new float[2];
+ vector[0] = readFloat();
+ vector[1] = readFloat();
+ fontMetrics.setVVector( vector );
+ }
+ else if( IS_FIXED_V.equals( nextCommand ) )
+ {
+ fontMetrics.setIsFixedV( readBoolean() );
+ }
+ else if( CAP_HEIGHT.equals( nextCommand ) )
+ {
+ fontMetrics.setCapHeight( readFloat() );
+ }
+ else if( X_HEIGHT.equals( nextCommand ) )
+ {
+ fontMetrics.setXHeight( readFloat() );
+ }
+ else if( ASCENDER.equals( nextCommand ) )
+ {
+ fontMetrics.setAscender( readFloat() );
+ }
+ else if( DESCENDER.equals( nextCommand ) )
+ {
+ fontMetrics.setDescender( readFloat() );
+ }
+ else if( STD_HW.equals( nextCommand ) )
+ {
+ fontMetrics.setStandardHorizontalWidth( readFloat() );
+ }
+ else if( STD_VW.equals( nextCommand ) )
+ {
+ fontMetrics.setStandardVerticalWidth( readFloat() );
+ }
+ else if( COMMENT.equals( nextCommand ) )
+ {
+ fontMetrics.addComment( readLine() );
+ }
+ else if( UNDERLINE_POSITION.equals( nextCommand ) )
+ {
+ fontMetrics.setUnderlinePosition( readFloat() );
+ }
+ else if( UNDERLINE_THICKNESS.equals( nextCommand ) )
+ {
+ fontMetrics.setUnderlineThickness( readFloat() );
+ }
+ else if( ITALIC_ANGLE.equals( nextCommand ) )
+ {
+ fontMetrics.setItalicAngle( readFloat() );
+ }
+ else if( CHAR_WIDTH.equals( nextCommand ) )
+ {
+ float[] widths = new float[2];
+ widths[0] = readFloat();
+ widths[1] = readFloat();
+ fontMetrics.setCharWidth( widths );
+ }
+ else if( IS_FIXED_PITCH.equals( nextCommand ) )
+ {
+ fontMetrics.setFixedPitch( readBoolean() );
+ }
+ else if( START_CHAR_METRICS.equals( nextCommand ) )
+ {
+ int count = readInt();
+ for( int i=0; i<count; i++ )
+ {
+ CharMetric charMetric = parseCharMetric();
+ fontMetrics.addCharMetric( charMetric );
+ }
+ String end = readString();
+ if( !end.equals( END_CHAR_METRICS ) )
+ {
+ throw new IOException( "Error: Expected '" + END_CHAR_METRICS + "' actual '" +
+ end + "'" );
+ }
+ }
+ else if( START_COMPOSITES.equals( nextCommand ) )
+ {
+ int count = readInt();
+ for( int i=0; i<count; i++ )
+ {
+ Composite part = parseComposite();
+ fontMetrics.addComposite( part );
+ }
+ String end = readString();
+ if( !end.equals( END_COMPOSITES ) )
+ {
+ throw new IOException( "Error: Expected '" + END_COMPOSITES + "' actual '" +
+ end + "'" );
+ }
+ }
+ else if( START_KERN_DATA.equals( nextCommand ) )
+ {
+ parseKernData( fontMetrics );
+ }
+ else
+ {
+ throw new IOException( "Unknown AFM key '" + nextCommand + "'" );
+ }
+ }
+ return fontMetrics;
+ }
+
+ /**
+ * This will parse the kern data.
+ *
+ * @param fontMetrics The metrics class to put the parsed data into.
+ *
+ * @throws IOException If there is an error parsing the data.
+ */
+ private void parseKernData( FontMetric fontMetrics ) throws IOException
+ {
+ String nextCommand = null;
+ while( !(nextCommand = readString()).equals( END_KERN_DATA ) )
+ {
+ if( START_TRACK_KERN.equals( nextCommand ) )
+ {
+ int count = readInt();
+ for( int i=0; i<count; i++ )
+ {
+ TrackKern kern = new TrackKern();
+ kern.setDegree( readInt() );
+ kern.setMinPointSize( readFloat() );
+ kern.setMinKern( readFloat() );
+ kern.setMaxPointSize( readFloat() );
+ kern.setMaxKern( readFloat() );
+ fontMetrics.addTrackKern( kern );
+ }
+ String end = readString();
+ if( !end.equals( END_TRACK_KERN ) )
+ {
+ throw new IOException( "Error: Expected '" + END_TRACK_KERN + "' actual '" +
+ end + "'" );
+ }
+ }
+ else if( START_KERN_PAIRS.equals( nextCommand ) )
+ {
+ int count = readInt();
+ for( int i=0; i<count; i++ )
+ {
+ KernPair pair = parseKernPair();
+ fontMetrics.addKernPair( pair );
+ }
+ String end = readString();
+ if( !end.equals( END_KERN_PAIRS ) )
+ {
+ throw new IOException( "Error: Expected '" + END_KERN_PAIRS + "' actual '" +
+ end + "'" );
+ }
+ }
+ else if( START_KERN_PAIRS0.equals( nextCommand ) )
+ {
+ int count = readInt();
+ for( int i=0; i<count; i++ )
+ {
+ KernPair pair = parseKernPair();
+ fontMetrics.addKernPair0( pair );
+ }
+ String end = readString();
+ if( !end.equals( END_KERN_PAIRS ) )
+ {
+ throw new IOException( "Error: Expected '" + END_KERN_PAIRS + "' actual '" +
+ end + "'" );
+ }
+ }
+ else if( START_KERN_PAIRS1.equals( nextCommand ) )
+ {
+ int count = readInt();
+ for( int i=0; i<count; i++ )
+ {
+ KernPair pair = parseKernPair();
+ fontMetrics.addKernPair1( pair );
+ }
+ String end = readString();
+ if( !end.equals( END_KERN_PAIRS ) )
+ {
+ throw new IOException( "Error: Expected '" + END_KERN_PAIRS + "' actual '" +
+ end + "'" );
+ }
+ }
+ else
+ {
+ throw new IOException( "Unknown kerning data type '" + nextCommand + "'" );
+ }
+ }
+ }
+
+ /**
+ * This will parse a kern pair from the data stream.
+ *
+ * @return The kern pair that was parsed from the stream.
+ *
+ * @throws IOException If there is an error reading from the stream.
+ */
+ private KernPair parseKernPair() throws IOException
+ {
+ KernPair kernPair = new KernPair();
+ String cmd = readString();
+ if( KERN_PAIR_KP.equals( cmd ) )
+ {
+ String first = readString();
+ String second = readString();
+ float x = readFloat();
+ float y = readFloat();
+ kernPair.setFirstKernCharacter( first );
+ kernPair.setSecondKernCharacter( second );
+ kernPair.setX( x );
+ kernPair.setY( y );
+ }
+ else if( KERN_PAIR_KPH.equals( cmd ) )
+ {
+ String first = hexToString( readString() );
+ String second = hexToString( readString() );
+ float x = readFloat();
+ float y = readFloat();
+ kernPair.setFirstKernCharacter( first );
+ kernPair.setSecondKernCharacter( second );
+ kernPair.setX( x );
+ kernPair.setY( y );
+ }
+ else if( KERN_PAIR_KPX.equals( cmd ) )
+ {
+ String first = readString();
+ String second = readString();
+ float x = readFloat();
+ kernPair.setFirstKernCharacter( first );
+ kernPair.setSecondKernCharacter( second );
+ kernPair.setX( x );
+ kernPair.setY( 0 );
+ }
+ else if( KERN_PAIR_KPY.equals( cmd ) )
+ {
+ String first = readString();
+ String second = readString();
+ float y = readFloat();
+ kernPair.setFirstKernCharacter( first );
+ kernPair.setSecondKernCharacter( second );
+ kernPair.setX( 0 );
+ kernPair.setY( y );
+ }
+ else
+ {
+ throw new IOException( "Error expected kern pair command actual='" + cmd + "'" );
+ }
+ return kernPair;
+ }
+
+ /**
+ * This will convert and angle bracket hex string to a string.
+ *
+ * @param hexString An angle bracket string.
+ *
+ * @return The bytes of the hex string.
+ *
+ * @throws IOException If the string is in an invalid format.
+ */
+ private String hexToString( String hexString ) throws IOException
+ {
+ if( hexString.length() < 2 )
+ {
+ throw new IOException( "Error: Expected hex string of length >= 2 not='" + hexString );
+ }
+ if( hexString.charAt( 0 ) != '<' ||
+ hexString.charAt( hexString.length() -1 ) != '>' )
+ {
+ throw new IOException( "String should be enclosed by angle brackets '" + hexString+ "'" );
+ }
+ hexString = hexString.substring( 1, hexString.length() -1 );
+ byte[] data = new byte[ (hexString.length() / 2) ];
+ for( int i=0; i<hexString.length(); i+=2 )
+ {
+ String hex = "" + hexString.charAt( i ) + hexString.charAt( i+1 );
+ try
+ {
+ data[ i / 2 ] = (byte)Integer.parseInt( hex, BITS_IN_HEX );
+ }
+ catch( NumberFormatException e )
+ {
+ throw new IOException( "Error parsing AFM file:" + e );
+ }
+ }
+ return new String( data );
+ }
+
+ /**
+ * This will parse a composite part from the stream.
+ *
+ * @return The composite.
+ *
+ * @throws IOException If there is an error parsing the composite.
+ */
+ private Composite parseComposite() throws IOException
+ {
+ Composite composite = new Composite();
+ String partData = readLine();
+ StringTokenizer tokenizer = new StringTokenizer( partData, " ;" );
+
+
+ String cc = tokenizer.nextToken();
+ if( !cc.equals( CC ) )
+ {
+ throw new IOException( "Expected '" + CC + "' actual='" + cc + "'" );
+ }
+ String name = tokenizer.nextToken();
+ composite.setName( name );
+
+ int partCount;
+ try
+ {
+ partCount = Integer.parseInt( tokenizer.nextToken() );
+ }
+ catch( NumberFormatException e )
+ {
+ throw new IOException( "Error parsing AFM document:" + e );
+ }
+ for( int i=0; i<partCount; i++ )
+ {
+ CompositePart part = new CompositePart();
+ String pcc = tokenizer.nextToken();
+ if( !pcc.equals( PCC ) )
+ {
+ throw new IOException( "Expected '" + PCC + "' actual='" + pcc + "'" );
+ }
+ String partName = tokenizer.nextToken();
+ try
+ {
+ int x = Integer.parseInt( tokenizer.nextToken() );
+ int y = Integer.parseInt( tokenizer.nextToken() );
+
+ part.setName( partName );
+ part.setXDisplacement( x );
+ part.setYDisplacement( y );
+ composite.addPart( part );
+ }
+ catch( NumberFormatException e )
+ {
+ throw new IOException( "Error parsing AFM document:" + e );
+ }
+ }
+ return composite;
+ }
+
+ /**
+ * This will parse a single CharMetric object from the stream.
+ *
+ * @return The next char metric in the stream.
+ *
+ * @throws IOException If there is an error reading from the stream.
+ */
+ private CharMetric parseCharMetric() throws IOException
+ {
+ CharMetric charMetric = new CharMetric();
+ String metrics = readLine();
+ StringTokenizer metricsTokenizer = new StringTokenizer( metrics );
+ try
+ {
+ while( metricsTokenizer.hasMoreTokens() )
+ {
+ String nextCommand = metricsTokenizer.nextToken();
+ if( nextCommand.equals( CHARMETRICS_C ) )
+ {
+ String charCode = metricsTokenizer.nextToken();
+ charMetric.setCharacterCode( Integer.parseInt( charCode ) );
+ verifySemicolon( metricsTokenizer );
+ }
+ else if( nextCommand.equals( CHARMETRICS_CH ) )
+ {
+ //Is the hex string <FF> or FF, the spec is a little
+ //unclear, wait and see if it breaks anything.
+ String charCode = metricsTokenizer.nextToken();
+ charMetric.setCharacterCode( Integer.parseInt( charCode, BITS_IN_HEX ) );
+ verifySemicolon( metricsTokenizer );
+ }
+ else if( nextCommand.equals( CHARMETRICS_WX ) )
+ {
+ String wx = metricsTokenizer.nextToken();
+ charMetric.setWx( Float.parseFloat( wx ) );
+ verifySemicolon( metricsTokenizer );
+ }
+ else if( nextCommand.equals( CHARMETRICS_W0X ) )
+ {
+ String w0x = metricsTokenizer.nextToken();
+ charMetric.setW0x( Float.parseFloat( w0x ) );
+ verifySemicolon( metricsTokenizer );
+ }
+ else if( nextCommand.equals( CHARMETRICS_W1X ) )
+ {
+ String w1x = metricsTokenizer.nextToken();
+ charMetric.setW0x( Float.parseFloat( w1x ) );
+ verifySemicolon( metricsTokenizer );
+ }
+ else if( nextCommand.equals( CHARMETRICS_WY ) )
+ {
+ String wy = metricsTokenizer.nextToken();
+ charMetric.setWy( Float.parseFloat( wy ) );
+ verifySemicolon( metricsTokenizer );
+ }
+ else if( nextCommand.equals( CHARMETRICS_W0Y ) )
+ {
+ String w0y = metricsTokenizer.nextToken();
+ charMetric.setW0y( Float.parseFloat( w0y ) );
+ verifySemicolon( metricsTokenizer );
+ }
+ else if( nextCommand.equals( CHARMETRICS_W1Y ) )
+ {
+ String w1y = metricsTokenizer.nextToken();
+ charMetric.setW0y( Float.parseFloat( w1y ) );
+ verifySemicolon( metricsTokenizer );
+ }
+ else if( nextCommand.equals( CHARMETRICS_W ) )
+ {
+ String w0 = metricsTokenizer.nextToken();
+ String w1 = metricsTokenizer.nextToken();
+ float[] w = new float[2];
+ w[0] = Float.parseFloat( w0 );
+ w[1] = Float.parseFloat( w1 );
+ charMetric.setW( w );
+ verifySemicolon( metricsTokenizer );
+ }
+ else if( nextCommand.equals( CHARMETRICS_W0 ) )
+ {
+ String w00 = metricsTokenizer.nextToken();
+ String w01 = metricsTokenizer.nextToken();
+ float[] w0 = new float[2];
+ w0[0] = Float.parseFloat( w00 );
+ w0[1] = Float.parseFloat( w01 );
+ charMetric.setW0( w0 );
+ verifySemicolon( metricsTokenizer );
+ }
+ else if( nextCommand.equals( CHARMETRICS_W1 ) )
+ {
+ String w10 = metricsTokenizer.nextToken();
+ String w11 = metricsTokenizer.nextToken();
+ float[] w1 = new float[2];
+ w1[0] = Float.parseFloat( w10 );
+ w1[1] = Float.parseFloat( w11 );
+ charMetric.setW1( w1 );
+ verifySemicolon( metricsTokenizer );
+ }
+ else if( nextCommand.equals( CHARMETRICS_VV ) )
+ {
+ String vv0 = metricsTokenizer.nextToken();
+ String vv1 = metricsTokenizer.nextToken();
+ float[] vv = new float[2];
+ vv[0] = Float.parseFloat( vv0 );
+ vv[1] = Float.parseFloat( vv1 );
+ charMetric.setVv( vv );
+ verifySemicolon( metricsTokenizer );
+ }
+ else if( nextCommand.equals( CHARMETRICS_N ) )
+ {
+ String name = metricsTokenizer.nextToken();
+ charMetric.setName( name );
+ verifySemicolon( metricsTokenizer );
+ }
+ else if( nextCommand.equals( CHARMETRICS_B ) )
+ {
+ String llx = metricsTokenizer.nextToken();
+ String lly = metricsTokenizer.nextToken();
+ String urx = metricsTokenizer.nextToken();
+ String ury = metricsTokenizer.nextToken();
+ BoundingBox box = new BoundingBox();
+ box.setLowerLeftX( Float.parseFloat( llx ) );
+ box.setLowerLeftY( Float.parseFloat( lly ) );
+ box.setUpperRightX( Float.parseFloat( urx ) );
+ box.setUpperRightY( Float.parseFloat( ury ) );
+ charMetric.setBoundingBox( box );
+ verifySemicolon( metricsTokenizer );
+ }
+ else if( nextCommand.equals( CHARMETRICS_L ) )
+ {
+ String successor = metricsTokenizer.nextToken();
+ String ligature = metricsTokenizer.nextToken();
+ Ligature lig = new Ligature();
+ lig.setSuccessor( successor );
+ lig.setLigature( ligature );
+ charMetric.addLigature( lig );
+ verifySemicolon( metricsTokenizer );
+ }
+ else
+ {
+ throw new IOException( "Unknown CharMetrics command '" + nextCommand + "'" );
+ }
+ }
+ }
+ catch( NumberFormatException e )
+ {
+ throw new IOException( "Error: Corrupt AFM document:" + e );
+ }
+ return charMetric;
+ }
+
+ /**
+ * This is used to verify that a semicolon is the next token in the stream.
+ *
+ * @param tokenizer The tokenizer to read from.
+ *
+ * @throws IOException If the semicolon is missing.
+ */
+ private void verifySemicolon( StringTokenizer tokenizer ) throws IOException
+ {
+ if( tokenizer.hasMoreTokens() )
+ {
+ String semicolon = tokenizer.nextToken();
+ if( !semicolon.equals( ";" ) )
+ {
+ throw new IOException( "Error: Expected semicolon in stream actual='" +
+ semicolon + "'" );
+ }
+ }
+ else
+ {
+ throw new IOException( "CharMetrics is missing a semicolon after a command" );
+ }
+ }
+
+ /**
+ * This will read a boolean from the stream.
+ *
+ * @return The boolean in the stream.
+ */
+ private boolean readBoolean() throws IOException
+ {
+ String theBoolean = readString();
+ return Boolean.valueOf( theBoolean ).booleanValue();
+ }
+
+ /**
+ * This will read an integer from the stream.
+ *
+ * @return The integer in the stream.
+ */
+ private int readInt() throws IOException
+ {
+ String theInt = readString();
+ try
+ {
+ return Integer.parseInt( theInt );
+ }
+ catch( NumberFormatException e )
+ {
+ throw new IOException( "Error parsing AFM document:" + e );
+ }
+ }
+
+ /**
+ * This will read a float from the stream.
+ *
+ * @return The float in the stream.
+ */
+ private float readFloat() throws IOException
+ {
+ String theFloat = readString();
+ return Float.parseFloat( theFloat );
+ }
+
+ /**
+ * This will read until the end of a line.
+ *
+ * @return The string that is read.
+ */
+ private String readLine() throws IOException
+ {
+ //First skip the whitespace
+ StringBuffer buf = new StringBuffer();
+ int nextByte = input.read();
+ while( isWhitespace( nextByte ) )
+ {
+ nextByte = input.read();
+ //do nothing just skip the whitespace.
+ }
+ buf.append( (char)nextByte );
+
+ //now read the data
+ while( !isEOL(nextByte = input.read()) )
+ {
+ buf.append( (char)nextByte );
+ }
+ return buf.toString();
+ }
+
+ /**
+ * This will read a string from the input stream and stop at any whitespace.
+ *
+ * @return The string read from the stream.
+ *
+ * @throws IOException If an IO error occurs when reading from the stream.
+ */
+ private String readString() throws IOException
+ {
+ //First skip the whitespace
+ StringBuffer buf = new StringBuffer();
+ int nextByte = input.read();
+ while( isWhitespace( nextByte ) )
+ {
+ nextByte = input.read();
+ //do nothing just skip the whitespace.
+ }
+ buf.append( (char)nextByte );
+
+ //now read the data
+ while( !isWhitespace(nextByte = input.read()) )
+ {
+ buf.append( (char)nextByte );
+ }
+ return buf.toString();
+ }
+
+ /**
+ * This will determine if the byte is a whitespace character or not.
+ *
+ * @param character The character to test for whitespace.
+ *
+ * @return true If the character is whitespace as defined by the AFM spec.
+ */
+ private boolean isEOL( int character )
+ {
+ return character == 0x0D ||
+ character == 0x0A;
+ }
+
+ /**
+ * This will determine if the byte is a whitespace character or not.
+ *
+ * @param character The character to test for whitespace.
+ *
+ * @return true If the character is whitespace as defined by the AFM spec.
+ */
+ private boolean isWhitespace( int character )
+ {
+ return character == ' ' ||
+ character == '\t' ||
+ character == 0x0D ||
+ character == 0x0A;
+ }
+}
\ No newline at end of file |