public final class Type2Parser extends java.lang.ObjectParse a Type2 charstring. A
Type2Parseroffers a single method,
parsewhich is given a charstring and a Type2Consumer. As the charString is parsed, the
Type2Consumeris called for each operator. The parser maintains the Type2 stack and storage area, interpreting the operators which affect them, as well as interpreting subroutine calls. The intent is that a Consumer can concentrate on dealing with the path and hints operators, and essentially ignore the arithmetic, storage, conditional and subroutine operators. However, all the operators are reported to the Consumer, so that it is for example possible to write a Consumer that creates an accurate textual representation of the charstring.
The same parser can be used repeatedly to parse multiple charstrings; those charstrings do not need to be in the same font, nor even in the same font set. The parser maintains no state between invocations of
The consumer must not call
parseon the parser that invoked it.
SynchronizationThis class is not synchronized. The
parsemethod invokes the Type2Consumer on the thread on which it is called.
Constructors Constructor Description
All Methods Instance Methods Concrete Methods Modifier and Type Method Description
parse(CharStrings charStrings, int index, CharStrings localSubrs, CharStrings globalSubrs, Type2Consumer c, NameKeyedFont font)Decode a Type2 charstring.
public void parse(CharStrings charStrings, int index, CharStrings localSubrs, CharStrings globalSubrs, Type2Consumer c, NameKeyedFont font) throws InvalidGlyphException, UnsupportedFontExceptionDecode a Type2 charstring.
CharStringscontaining the charstring
index- the index of the charstring in
localSubrs- the local subroutines
globalSubrs- the global subroutines
c- the Type2Consumer to alert of the parsing events
font- The name-keyed font to which the charStrings belong, if they belong to a name-keyed font. If the font is cid-keyed, null should be passed in. font is only used to resolve seac glyphs, which can only be present in name-keyed fonts.
InvalidGlyphException- the charstring is malformed or missing