Big overhaul, with lots of help from Yegor
Now correctly handle all the different kinds of stylings, in their twin list format git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@353763 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Nick Burch
parent
3824c8b638
commit
b819b7595c
@ -22,13 +22,21 @@ import org.apache.poi.util.LittleEndian;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.io.ByteArrayOutputStream;
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import java.util.LinkedList;
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import java.util.Vector;
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/**
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* A StyleTextPropAtom (type 4001). Holds basic character properties
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* (bold, italic, underline, possibly more?) and paragraph properties
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* (alignment, line spacing etc) for the block of text (TextBytesAtom
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* or TextCharsAtom) that this record follows
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* or TextCharsAtom) that this record follows.
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* You will find two lists within this class.
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* 1 - Paragraph style list (paragraphStyles)
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* 2 - Character style list (charStyles)
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* Both are lists of TextPropCollections. These define how many characters
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* the style applies to, and what style elements make up the style (another
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* list, this time of TextProps). Each TextProp has a value, which somehow
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* encapsulates a property of the style
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*
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* @author Nick Burch
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*/
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@ -39,33 +47,74 @@ public class StyleTextPropAtom extends RecordAtom
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private static long _type = 4001l;
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private byte[] reserved;
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private short paraStyleLen;
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private int paraStyle1;
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private int paraStyle2;
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private CharacterStyle[] charStyles;
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/** Get the number of characters covered by these text styles */
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public int getParagraphStyleCharactersCoveredLength() {
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return paraStyleLen;
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}
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/** Get the individual character stylings for this paragraph */
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public CharacterStyle[] getCharacterStyles() {
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return charStyles;
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}
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private byte[] rawContents; // Holds the contents between write-outs
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/**
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* Set the number of characters covered by these text styles.
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* This must equal the number of characters in the Text record
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* that precedes this record, or things won't behave properly
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* Only set to true once setParentTextSize(int) is called.
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* Until then, no stylings will have been decoded
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*/
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public void setParagraphStyleCharactersCoveredLength(int len) {
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paraStyleLen = (short)len;
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}
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private boolean initialised = false;
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/**
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* The list of all the different paragraph stylings we code for.
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* Each entry is a TextPropCollection, which tells you how many
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* Characters the paragraph covers, and also contains the TextProps
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* that actually define the styling of the paragraph.
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*/
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private LinkedList paragraphStyles;
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public LinkedList getParagraphStyles() { return paragraphStyles; }
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/**
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* The list of all the different character stylings we code for.
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* Each entry is a TextPropCollection, which tells you how many
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* Characters the character styling covers, and also contains the
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* TextProps that actually define the styling of the characters.
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*/
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private LinkedList charStyles;
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public LinkedList getCharacterStyles() { return charStyles; }
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/** All the different kinds of paragraph properties we might handle */
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public TextProp[] paragraphTextPropTypes = new TextProp[] {
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new BitMaskTextProp(2, 0xF, new String[] {
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"bullet", "bullet.hardfont",
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"bullet.hardcolor", "bullet.hardsize"}
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),
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new TextProp(2, 0x10, "bullet.font"),
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new TextProp(4, 0x20, "bullet.color"),
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new TextProp(2, 0x40, "bullet.size"),
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new TextProp(2, 0x80, "bullet.char"),
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new TextProp(2, 0x100, "para_unknown_1"),
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new TextProp(2, 0x200, "para_unknown_2"),
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new TextProp(2, 0x400, "para_unknown_3"),
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new TextProp(2, 0x800, "alignment"),
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new TextProp(2, 0x1000, "linespacing"),
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new TextProp(2, 0x2000, "spacebefore"),
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new TextProp(2, 0x4000, "spaceafter"),
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new TextProp(2, 0x8000, "para_unknown_4"),
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new TextProp(2, 0x10000, "para_unknown_5"),
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new TextProp(2, 0xA0000, "para_unknown_6")
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};
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/** All the different kinds of character properties we might handle */
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public TextProp[] characterTextPropTypes = new TextProp[] {
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new CharFlagsTextProp(),
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new TextProp(2, 0x10000, "font.index"),
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new TextProp(2, 0x20000, "font.size"),
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new TextProp(4, 0x40000, "font.color"),
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new TextProp(2, 0x80000, "offset"),
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new TextProp(2, 0x100000, "char_unknown_1"),
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new TextProp(2, 0x200000, "asian_or_complex"),
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new TextProp(2, 0x400000, "char_unknown_2"),
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new TextProp(2, 0x800000, "symbol"),
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new TextProp(2, 0x1000000, "char_unknown_3"),
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new TextProp(2, 0x2000000, "char_unknown_4"),
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new TextProp(2, 0x4000000, "char_unknown_5"),
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new TextProp(2, 0x8000000, "char_unknown_6"),
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new TextProp(2, 0x10000000, "char_unknown_7"),
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new TextProp(2, 0x20000000, "char_unknown_8"),
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new TextProp(2, 0x40000000, "char_unknown_9"),
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new TextProp(2, 0x80000000, "char_unknown_10"),
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};
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/* *************** record code follows ********************** */
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/**
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@ -84,76 +133,46 @@ public class StyleTextPropAtom extends RecordAtom
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_header = new byte[8];
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System.arraycopy(source,start,_header,0,8);
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// Grab the paragraph style stuff
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paraStyleLen = (short)LittleEndian.getShort(source,start+8+0);
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paraStyle1 = (int)LittleEndian.getInt(source,start+8+2);
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paraStyle2 = (int)LittleEndian.getInt(source,start+8+6);
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// Save the contents of the atom, until we're asked to go and
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// decode them (via a call to setParentTextSize(int)
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rawContents = new byte[len-8];
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System.arraycopy(source,start+8,rawContents,0,rawContents.length);
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reserved = new byte[0];
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// While we have the data, grab the character styles
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Vector cp = new Vector();
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int cpos = 0;
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int oldCpos = 0;
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boolean overshot = false;
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// Min size is 8, everything starts 8+10 in to the record
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while((cpos <= len-8-10-8) && !overshot) {
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CharacterStyle cs;
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short clen = LittleEndian.getShort(source,start+8+10+cpos);
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cpos += 2;
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int s1 = (int)LittleEndian.getInt(source,start+8+10+cpos);
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cpos += 4;
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if(s1 == 0) {
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short s3 = LittleEndian.getShort(source,start+8+10+cpos);
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cpos += 2;
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cs = new CharacterStyle(clen,s1,0,s3);
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} else {
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int s2 = (int)LittleEndian.getInt(source,start+8+10+cpos);
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cpos += 4;
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cs = new CharacterStyle(clen,s1,s2,(short)0);
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}
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// Only add if it won't push us past the end of the record
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if(cpos <= (len-8-10)) {
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cp.add(cs);
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oldCpos = cpos;
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} else {
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// Long CharacterStyle, but only enough data for a short one!
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// Rewind back to the end of the last CharacterStyle
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cpos = oldCpos;
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overshot = true;
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}
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}
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charStyles = new CharacterStyle[cp.size()];
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for(int i=0; i<charStyles.length; i++) {
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charStyles[i] = (CharacterStyle)cp.get(i);
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}
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// Chuck anything that doesn't make a complete CharacterStyle
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// somewhere for safe keeping
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reserved = new byte[len-8-10-cpos];
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System.arraycopy(source,start+8+10+cpos,reserved,0,reserved.length);
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// Set empty linked lists, ready for when they call setParentTextSize
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paragraphStyles = new LinkedList();
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charStyles = new LinkedList();
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}
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/**
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* A new set of text style properties for some text without any
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* A new set of text style properties for some text without any.
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*/
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public StyleTextPropAtom() {
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public StyleTextPropAtom(int parentTextSize) {
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_header = new byte[8];
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rawContents = new byte[0];
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reserved = new byte[0];
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charStyles = new CharacterStyle[0];
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// Set our type
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LittleEndian.putInt(_header,2,(short)_type);
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// Our initial size is 10
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LittleEndian.putInt(_header,4,10);
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// Blank paragraph style
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paraStyleLen = 0;
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paraStyle1 = 0;
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paraStyle2 = 0;
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// Set empty paragraph and character styles
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paragraphStyles = new LinkedList();
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charStyles = new LinkedList();
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TextPropCollection defaultParagraphTextProps = new TextPropCollection(parentTextSize);
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paragraphStyles.add(defaultParagraphTextProps);
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TextPropCollection defaultCharacterTextProps = new TextPropCollection(parentTextSize);
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charStyles.add(defaultCharacterTextProps);
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// Set us as now initialised
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initialised = true;
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}
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/**
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* We are of type 4001
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*/
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@ -165,29 +184,19 @@ public class StyleTextPropAtom extends RecordAtom
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* to disk
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*/
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public void writeOut(OutputStream out) throws IOException {
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// Grab the size of the character styles
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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for(int i=0; i<charStyles.length; i++) {
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charStyles[i].writeOut(baos);
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}
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// First thing to do is update the raw bytes of the contents, based
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// on the properties
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updateRawContents();
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// Figure out the new size
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// Para->10 + Chars + Reserved
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int newSize = 10 + baos.size() + reserved.length;
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// Update the size (header bytes 5-8)
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// Now ensure that the header size is correct
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int newSize = rawContents.length + reserved.length;
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LittleEndian.putInt(_header,4,newSize);
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// Write out the (new) header
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out.write(_header);
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// Write out the paragraph bits
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writeLittleEndian(paraStyleLen,out);
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writeLittleEndian(paraStyle1,out);
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writeLittleEndian(paraStyle2,out);
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// Write out the character bits
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out.write(baos.toByteArray());
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// Write out the styles
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out.write(rawContents);
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// Write out any extra bits
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out.write(reserved);
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@ -195,112 +204,311 @@ public class StyleTextPropAtom extends RecordAtom
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/**
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* Class to handle character styles
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* Tell us how much text the parent TextCharsAtom or TextBytesAtom
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* contains, so we can go ahead and initialise ourselves.
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*/
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public static class CharacterStyle {
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private short styleLen;
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private int style1;
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private int style2;
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private short style3;
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public void setParentTextSize(int size) {
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int pos = 0;
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int textHandled = 0;
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// style1 0x00010000
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private static final int BOLD_STYLE = 65536;
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// style1 0x00020000
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private static final int ITALIC_STYLE = 131072;
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// style1 0x00040000
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private static final int UNDERLINED_STYLE = 262144;
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// While we have text in need of paragraph stylings, go ahead and
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// grok the contents as paragraph formatting data
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while(pos < rawContents.length && textHandled < size) {
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// First up, fetch the number of characters this applies to
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int textLen = LittleEndian.getInt(rawContents,pos);
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textHandled += textLen;
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pos += 4;
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/** Create a new Character Style from on-disk data */
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protected CharacterStyle(short len, int s1, int s2, short s3) {
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styleLen = len;
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style1 = s1;
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style2 = s2;
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style3 = s3;
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// Fetch the 2 byte value that is safe to ignore as 0
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short paraIgn = LittleEndian.getShort(rawContents,pos);
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pos += 2;
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// Grab the 4 byte value that tells us what properties follow
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int paraFlags = LittleEndian.getInt(rawContents,pos);
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pos += 4;
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// Now make sense of those properties
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TextPropCollection thisCollection = new TextPropCollection(textLen, paraIgn);
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int plSize = thisCollection.buildTextPropList(
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paraFlags, paragraphTextPropTypes, rawContents, pos);
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pos += plSize;
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// Save this properties set
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paragraphStyles.add(thisCollection);
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System.err.println("Paragraph covers " + textLen + " of " + size + " characters, pos now " + pos);
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}
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/** Create a new Character Style for text without one */
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protected CharacterStyle() {
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new CharacterStyle((short)0,0,0,(short)0);
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// Now do the character stylings
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textHandled = 0;
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while(pos < rawContents.length && textHandled < size) {
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// First up, fetch the number of characters this applies to
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int textLen = LittleEndian.getInt(rawContents,pos);
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textHandled += textLen;
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pos += 4;
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// There is no 2 byte value
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short no_val = -1;
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// Grab the 4 byte value that tells us what properties follow
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int charFlags = LittleEndian.getInt(rawContents,pos);
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pos += 4;
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// Now make sense of those properties
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TextPropCollection thisCollection = new TextPropCollection(textLen, no_val);
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int chSize = thisCollection.buildTextPropList(
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charFlags, characterTextPropTypes, rawContents, pos);
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pos += chSize;
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// Save this properties set
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charStyles.add(thisCollection);
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System.err.println("Char Style covers " + textLen + " of " + size + " characters (done " + textHandled + "), pos now " + pos);
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}
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/** Write the character style out */
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protected void writeOut(OutputStream out) throws IOException {
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writeLittleEndian(styleLen,out);
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writeLittleEndian(style1,out);
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if(style1 == 0) {
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writeLittleEndian(style3,out);
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} else {
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writeLittleEndian(style2,out);
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}
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// Handle anything left over
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if(pos < rawContents.length) {
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reserved = new byte[rawContents.length-pos];
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System.arraycopy(rawContents,pos,reserved,0,reserved.length);
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}
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initialised = true;
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}
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/**
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* Return the number of characters covered by these properties.
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* If it's the last CharacterStyle of a StyleTextPropAtom, it
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* will normally be 0, indicating it applies to all the remaining
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* text.
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/**
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* Updates the cache of the raw contents. Serialised the styles out.
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*/
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private void updateRawContents() throws IOException {
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if(!initialised) {
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// We haven't groked the styles since creation, so just stick
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// with what we found
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return;
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}
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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// First up, we need to serialise the paragraph properties
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for(int i=0; i<paragraphStyles.size(); i++) {
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TextPropCollection tpc = (TextPropCollection)paragraphStyles.get(i);
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tpc.writeOut(baos);
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}
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// Now, we do the character ones
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for(int i=0; i<charStyles.size(); i++) {
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TextPropCollection tpc = (TextPropCollection)charStyles.get(i);
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tpc.writeOut(baos);
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}
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rawContents = baos.toByteArray();
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}
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/* ************************************************************************ */
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/**
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* For a given run of characters, holds the properties (which could
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* be paragraph properties or character properties).
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* Used to hold the number of characters affected, the list of active
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* properties, and the random reserved field if required.
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*/
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public static class TextPropCollection {
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private int charactersCovered;
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private short reservedField;
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private LinkedList textPropList;
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/** Fetch the number of characters this styling applies to */
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public int getCharactersCovered() { return charactersCovered; }
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/** Fetch the TextProps that define this styling */
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public LinkedList getTextPropList() { return textPropList; }
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/**
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* Create a new collection of text properties (be they paragraph
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* or character) which will be groked via a subsequent call to
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* buildTextPropList().
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*/
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public int getCharactersCoveredLength() {
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return styleLen;
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public TextPropCollection(int charactersCovered, short reservedField) {
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this.charactersCovered = charactersCovered;
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this.reservedField = reservedField;
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textPropList = new LinkedList();
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}
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/**
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* Set the number of characters covered by these properties.
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* If this is the last CharacterStyle of a StyleTextPropAtom, then
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* a value of 0 should be used
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/**
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* For an existing set of text properties, build the list of
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* properties coded for in a given run of properties.
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* @return the number of bytes that were used encoding the properties list
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*/
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public void setCharactersCoveredLength(int len) {
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styleLen = (short)len;
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}
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public int buildTextPropList(int containsField, TextProp[] potentialProperties, byte[] data, int dataOffset) {
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int bytesPassed = 0;
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/** Checks to see if the text is bold */
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public boolean isBold() {
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if ((style1 & BOLD_STYLE) == BOLD_STYLE) { return true; }
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return false;
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}
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/** Checks to see if the text is italic */
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public boolean isItalic() {
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if ((style1 & ITALIC_STYLE) == ITALIC_STYLE) { return true; }
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return false;
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}
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/** Checks to see if the text is underlined */
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public boolean isUnderlined() {
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if ((style1 & UNDERLINED_STYLE) == UNDERLINED_STYLE) { return true; }
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return false;
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}
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/** Sets the text to be bold/not bold */
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public void setBold(boolean bold) {
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if(bold == isBold()) { return; }
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if(bold) {
|
||||
style1 += BOLD_STYLE;
|
||||
} else {
|
||||
style1 -= BOLD_STYLE;
|
||||
// For each possible entry, see if we match the mask
|
||||
// If we do, decode that, save it, and shuffle on
|
||||
for(int i=0; i<potentialProperties.length; i++) {
|
||||
if((containsField & potentialProperties[i].getMask()) != 0) {
|
||||
// Bingo, contained
|
||||
TextProp prop = (TextProp)potentialProperties[i].clone();
|
||||
int val = 0;
|
||||
if(prop.getSize() == 2) {
|
||||
val = LittleEndian.getShort(data,dataOffset+bytesPassed);
|
||||
} else {
|
||||
val = LittleEndian.getInt(data,dataOffset+bytesPassed);
|
||||
}
|
||||
prop.setValue(val);
|
||||
bytesPassed += prop.getSize();
|
||||
textPropList.add(prop);
|
||||
}
|
||||
}
|
||||
|
||||
// Return how many bytes were used
|
||||
return bytesPassed;
|
||||
}
|
||||
|
||||
/** Sets the text to be italic/not italic */
|
||||
public void setItalic(boolean italic) {
|
||||
if(italic == isItalic()) { return; }
|
||||
if(italic) {
|
||||
style1 += ITALIC_STYLE;
|
||||
} else {
|
||||
style1 -= ITALIC_STYLE;
|
||||
/**
|
||||
* Create a new collection of text properties (be they paragraph
|
||||
* or character) for a run of text without any
|
||||
*/
|
||||
public TextPropCollection(int textSize) {
|
||||
charactersCovered = textSize;
|
||||
reservedField = -1;
|
||||
textPropList = new LinkedList();
|
||||
}
|
||||
|
||||
/**
|
||||
* Writes out to disk the header, and then all the properties
|
||||
*/
|
||||
private void writeOut(OutputStream o) throws IOException {
|
||||
// First goes the number of characters we affect
|
||||
writeLittleEndian(charactersCovered,o);
|
||||
|
||||
// Then we have the reserved field if required
|
||||
if(reservedField > -1) {
|
||||
writeLittleEndian(reservedField,o);
|
||||
}
|
||||
}
|
||||
|
||||
/** Sets the text to be underlined/not underlined */
|
||||
public void setUnderlined(boolean underlined) {
|
||||
if(underlined == isUnderlined()) { return; }
|
||||
if(underlined) {
|
||||
style1 += UNDERLINED_STYLE;
|
||||
} else {
|
||||
style1 -= UNDERLINED_STYLE;
|
||||
// The the mask field
|
||||
int mask = 0;
|
||||
for(int i=0; i<textPropList.size(); i++) {
|
||||
TextProp textProp = (TextProp)textPropList.get(i);
|
||||
mask += textProp.getMask();
|
||||
}
|
||||
writeLittleEndian(mask,o);
|
||||
|
||||
// Then the contents of all the properties
|
||||
for(int i=0; i<textPropList.size(); i++) {
|
||||
TextProp textProp = (TextProp)textPropList.get(i);
|
||||
int val = textProp.getValue();
|
||||
if(textProp.getSize() == 2) {
|
||||
writeLittleEndian((short)val,o);
|
||||
} else {
|
||||
writeLittleEndian(val,o);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* ************************************************************************ */
|
||||
|
||||
|
||||
/**
|
||||
* Definition of a property of some text, or its paragraph. Defines
|
||||
* how to find out if it's present (via the mask on the paragraph or
|
||||
* character "contains" header field), how long the value of it is,
|
||||
* and how to get and set the value.
|
||||
*/
|
||||
public static class TextProp implements Cloneable {
|
||||
private int sizeOfDataBlock; // Number of bytes the data part uses
|
||||
private String propName;
|
||||
private int dataValue;
|
||||
private int maskInHeader;
|
||||
|
||||
/**
|
||||
* Generate the definition of a given type of text property.
|
||||
*/
|
||||
private TextProp(int sizeOfDataBlock, int maskInHeader, String propName) {
|
||||
this.sizeOfDataBlock = sizeOfDataBlock;
|
||||
this.maskInHeader = maskInHeader;
|
||||
this.propName = propName;
|
||||
}
|
||||
|
||||
/**
|
||||
* Name of the text property
|
||||
*/
|
||||
public String getName() { return propName; }
|
||||
|
||||
/**
|
||||
* Size of the data section of the text property (2 or 4 bytes)
|
||||
*/
|
||||
public int getSize() { return sizeOfDataBlock; }
|
||||
|
||||
/**
|
||||
* Mask in the paragraph or character "contains" header field
|
||||
* that indicates that this text property is present.
|
||||
*/
|
||||
public int getMask() { return maskInHeader; }
|
||||
|
||||
/**
|
||||
* Fetch the value of the text property (meaning is specific to
|
||||
* each different kind of text property)
|
||||
*/
|
||||
public int getValue() { return dataValue; }
|
||||
|
||||
/**
|
||||
* Set the value of the text property.
|
||||
*/
|
||||
public void setValue(int val) { dataValue = val; }
|
||||
|
||||
/**
|
||||
* Clone, eg when you want to actually make use of one of these.
|
||||
*/
|
||||
public Object clone(){
|
||||
try {
|
||||
return super.clone();
|
||||
} catch(CloneNotSupportedException e) {
|
||||
throw new InternalError(e.getMessage());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Definition of a special kind of property of some text, or its
|
||||
* paragraph. For these properties, a flag in the "contains" header
|
||||
* field tells you the data property family will exist. The value
|
||||
* of the property is itself a mask, encoding several different
|
||||
* (but related) properties
|
||||
*/
|
||||
public static class BitMaskTextProp extends TextProp {
|
||||
private String[] subPropNames;
|
||||
|
||||
private BitMaskTextProp(int sizeOfDataBlock, int maskInHeader, String[] subPropNames) {
|
||||
super(sizeOfDataBlock,maskInHeader,"bitmask");
|
||||
this.subPropNames = subPropNames;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Definition for the common character text property bitset, which
|
||||
* handles bold/italic/underline etc.
|
||||
*/
|
||||
public static class CharFlagsTextProp extends BitMaskTextProp {
|
||||
private CharFlagsTextProp() {
|
||||
super(2,0xffff, new String[] {
|
||||
"bold", // 0x0001
|
||||
"italic", // 0x0002
|
||||
"underline", // 0x0004
|
||||
"char_unknown_1",// 0x0008
|
||||
"shadow", // 0x0010
|
||||
"char_unknown_2",// 0x0020
|
||||
"char_unknown_3",// 0x0040
|
||||
"char_unknown_4",// 0x0080
|
||||
"strikethrough", // 0x0100
|
||||
"relief", // 0x0200
|
||||
"reset_numbering", // 0x0400
|
||||
"enable_numbering_1", // 0x0800
|
||||
"enable_numbering_2", // 0x1000
|
||||
}
|
||||
);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user