PdfContentWriter class

Reserializes a list of operators back into content stream bytes.

What is preserved

Literals are re-emitted from the original lexeme when there is one (numbers with the same notation, names with the same #xx escapes, strings with the same escapes and delimiters), and the bytes of an inline image come out identical to the input.

What changes

The spacing between tokens is normalized: one space between operands and one line break after every operator. So the output is not byte-for-byte equal to the input for an arbitrary stream — the guarantee that holds is equivalence: reparsing the output produces the same list of operators. Comments only survive if the parser was created with keepComments: true.

Constructors

PdfContentWriter({int lineBreak = 0x0A})

Creates a writer.

const

Properties

hashCode → int

The hash code for this object.

no setter, inherited

lineBreak → int

Byte used to separate operators (\n by default).

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

serialize(List<PdfContentOperator> operators) → Uint8List

Serializes operators into bytes.

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

escapeName(String name) → String

Applies the #xx escapes required in a PDF name.

formatNumber(double value) → String

Formats a number the PDF way: no exponent, no unnecessary trailing zeros, and no .0 for integers.

write(List<PdfContentOperator> operators) → Uint8List

Serializes operators into bytes.