UglyToad.PdfPig.Core

Pooled Buffer Writer

PooledBufferWriter constructor

Constructs a PooledBufferWriter

The size of the initial buffer

Advanced the current position

Writes the provided value

Writes the provided values

Returns a writeable block of memory that can be written to

Returns a span that can be written to

Returns the number of bytes written to the buffer

Returns the committed data as Memory

Returns the committed data as a Span

Resets the internal state so the instance can be reused before disposal

Disposes the buffer and returns any rented memory to the pool

Rules for determining which points lie inside/outside a path.

No rule.

This even-odd rule determines whether a point is inside a path by drawing a ray from that point in any direction and simply counting the number of path segments that cross the ray, regardless of direction. If this number is odd, the point is inside; if even, the point is outside. This yields the same results as the nonzero winding number rule for paths with simple shapes, but produces different results for more complex shapes.

The nonzero winding number rule determines whether a given point is inside a path by conceptually drawing a ray from that point to infinity in any direction and then examining the places where a segment of the path crosses the ray. Starting with a count of 0, the rule adds 1 each time a path segment crosses the ray from left to right and subtracts 1 each time a segment crosses from right to left. After counting all the crossings, if the result is 0, the point is outside the path; otherwise, it is inside.

Indicates the type may be cloned making entirely independent copies.

Clone the type including all referenced data.

The input bytes for a PDF document.

The current offset in bytes.

Moves to the next byte if available.

The current byte.

The length of the data in bytes.

Returns the next byte if available.

Whether we are at the end of the available data.

Move to a given position.

Fill the buffer with bytes starting from the current position.

A buffer with a length corresponding to the number of bytes to read. The number of bytes successfully read.

Used to uniquely identify and refer to objects in the PDF file.

A positive integer object number.

A non-negative integer generation number which starts as 0 and increases if the file is updated incrementally. The maximum generation number is 65,535.

Create a new

The object number. The generation number.

Calculate the internal hash value for the given object number and generation number.

The object number. The generation number. The internal hash for the given values.

Indicates that a data structure can be written to an output stream.

Write the data to the output stream.

Memory extensions.

Gets a read-only from a ReadOnlyMemory<byte>, attempting without memory allocation.

Gets the Memory<byte> from a , attempting without memory allocation.

Input bytes from a byte array.

Create a new .

Interprets numbers in octal format.

Read a short.

Read an integer from octal digits.

Convenience access to frequently used encodings.

Latin 1 Encoding: ISO 8859-1 is a single-byte encoding that can represent the first 256 Unicode characters.

Convert the string to bytes using the ISO 8859-1 encoding.

Convert the bytes to string using the ISO 8859-1 encoding.

PDFDocEncoding, defined in the spec for text strings in PDF objects (but not content stream contents, Type 1 font contents, etc). Matches ASCII for code points 32 - 126.

Try to convert raw bytes to a PdfDocEncoding encoded string. If unsupported characters are encountered meaning we cannot safely round-trip the value to bytes this will instead return false.

Map from string back to bytes. This is not a reversible operation for all inputs.

This exception will be thrown where the contents of the PDF document do not match the specification in such a way that it renders the document unreadable.

Create a new .

A line in a PDF file.

PDF coordinates are defined with the origin at the lower left (0, 0). The Y-axis extends vertically upwards and the X-axis horizontally to the right. Unless otherwise specified on a per-page basis, units in PDF space are equivalent to a typographic point (1/72 inch).

Length of the line.

First point of the line.

Second point of the line.

Create a new .

The x coordinate of the first point on the line. The y coordinate of the first point on the line. The x coordinate of the second point on the line. The y coordinate of the second point on the line.

Create a new .

First point of the line. Second point of the line.

The rectangle completely containing the .

Returns a value indicating whether this is equal to a specified .

Returns the hash code for this .

A point in a PDF file.

The origin of the coordinates system.

The X coordinate for this point. (Horizontal axis).

The Y coordinate of this point. (Vertical axis).

Create a new at this position.

Creates a new which is the current point moved in the x direction relative to its current position by a value.

The distance to move the point in the x direction relative to its current location. A new point shifted on the x axis by the given delta value.

Creates a new which is the current point moved in the y direction relative to its current position by a value.

The distance to move the point in the y direction relative to its current location. A new point shifted on the y axis by the given delta value.

Creates a new which is the current point moved in the x and y directions relative to its current position by a value.

The distance to move the point in the x direction relative to its current location. The distance to move the point in the y direction relative to its current location. A new point shifted on the y axis by the given delta value.

Returns a value indicating whether this is equal to a specified .

Returns the hash code for this .

This class will be used to signify a range. a(min) <= a* <= a(max)

Constructor assumes a starting index of 0.

The array that describes the range.

Constructor with an index into an array. Because some arrays specify multiple ranges ie [0, 1, 0, 2, 2, 3]. It is convenient for this class to take an index into an array. So if you want this range to represent 0, 2 in the above example then you would say new PDRange(array, 1).

The array that describes the index The range index into the array for the start of the range.

The minimum value of the range.

The maximum value of the range.

A rectangle in a PDF file.

Top left point of the rectangle.

Top right point of the rectangle.

Bottom right point of the rectangle.

Bottom left point of the rectangle.

Centroid point of the rectangle.

Width of the rectangle. A positive number.

Height of the rectangle. A positive number.

Rotation angle of the rectangle. Counterclockwise, in degrees. -180 ≤ θ ≤ 180

Area of the rectangle.

Left. This value is only valid if the rectangle is not rotated, check .

Top. This value is only valid if the rectangle is not rotated, check .

Right. This value is only valid if the rectangle is not rotated, check .

Bottom. This value is only valid if the rectangle is not rotated, check .

Create a new .

Bottom left point of the rectangle. Top right point of the rectangle.

Create a new .

Bottom left point's x coordinate of the rectangle. Bottom left point's y coordinate of the rectangle. Top right point's x coordinate of the rectangle. Top right point's y coordinate of the rectangle.

Create a new .

Bottom left point's x coordinate of the rectangle. Bottom left point's y coordinate of the rectangle. Top right point's x coordinate of the rectangle. Top right point's y coordinate of the rectangle.

Create a new .

Creates a new which is the current rectangle moved in the x and y directions relative to its current position by a value.

The distance to move the rectangle in the x direction relative to its current location. The distance to move the rectangle in the y direction relative to its current location. A new rectangle shifted on the y axis by the given delta value.

-π ≤ θ ≤ π

A supbpath is made up of a sequence of connected segments.

The sequence of commands which form this .

True if the was originaly drawn using the rectangle ('re') operator. Always false if paths are clipped.

Return true if points are organised in a clockwise order. Works only with closed paths.

Return true if points are organised in a counterclockwise order. Works only with closed paths.

Get the 's centroid point.

Simplify this by converting everything to s.

Number of lines required (minimum is 1).

Add a command to the path.

Add a rectangle following the pdf specification (m, l, l, l, c) path. A new subpath is created.

Add a to the path.

Add a to the path. Only used in fonts.

Close the path.

Determines if the path is currently closed.

Gets a which entirely contains the geometry of the defined subpath.

For subpaths which don't define any geometry this returns .

If then returns the rectangle dimensions specified. Otherwise returns .

Since a rectangle is interpreted as a move command followed by 3 lines and a close command this condenses the 5 commands back into a single rectangle.

Gets a which entirely contains the geometry of the defined path.

For paths which don't define any geometry this returns .

A command in a .

Returns the smallest rectangle which contains the path region given by this command.

Converts from the path command to an SVG string representing the path operation.

Close the current .

Move drawing of the current to the specified location.

The location to move to.

Create a new path command.

Returns since this generates no visible path.

Draw a straight line between two points.

The start of the line.

The end of the line.

Length of the line.

Create a new .

Draw a quadratic Bezier-curve given by the start, control and end points. Only used in fonts.

Create a quadratic Bezier-curve at the provided points. Only used in fonts.

The control point of the curve.

Draw a cubic Bezier-curve given by the start, control and end points.

Create a cubic Bezier-curve at the provided points.

The first control point of the curve.

The second control point of the curve.

Draw a Bezier-curve given by the start, control and end points.

The start point of the Bezier-curve.

The end point of the curve.

Create a Bezier-curve at the provided points.

TODO

Calculate the value of the Quadratic Bezier-curve at t.

Calculate the value of the Cubic Bezier-curve at t.

Converts the bezier curve into approximated lines.

Number of lines required (minimum is 1).

Compares two s for equality. Paths will only be considered equal if the commands which construct the paths are in the same order.

Get the hash code. Paths will only have the same hash code if the commands which construct the paths are in the same order.

Helper methods for reading from PDF files.

The line-feed '\n' character.

The carriage return '\r' character.

Read a string from the input until a newline.

Skip any whitespace characters.

Whether the given character value is the end of a PDF Name token.

Determines if a character is whitespace or not, this includes newlines.

These values are specified in table 1 (page 12) of ISO 32000-1:2008.

Whether the character is an end of line character.

Whether the character is an line feed '\n' character.

Whether the character is a carriage return '\r' character.

Whether the given string is at this position in the input. Resets to the current offset once read.

Read a long from the input.

Whether the given value is a digit or not.

Read an int from the input.

Whether the given character value is a valid hex value.

Whether the given input bytes are valid UTF8.

Provides a guard for tracking and limiting the depth of nested stack operations, such as recursive calls or nested parsing.

Use this class to prevent excessive stack usage by enforcing a maximum nesting depth. This is particularly useful in scenarios where untrusted or deeply nested input could cause stack overflows or performance issues.

Represents a stack depth guard with no effective limit on the allowed depth.

Use this instance when stack depth restrictions are not required.

Initializes a new instance of the StackDepthGuard class with the specified maximum stack depth.

The maximum allowed stack depth for guarded operations. Must be a positive integer.

Increments the current nesting depth and checks against the maximum allowed stack depth.

Thrown if the maximum allowed nesting depth is exceeded.

Decreases the current depth level by one, ensuring that the depth does not become negative.

If the current depth is already zero, calling this method has no effect. This method is typically used to track or manage nested operations or scopes where depth must remain non-negative.

Input bytes from a stream.

Create a new .

The stream to use, should be readable and seekable. Whether this class should dispose the stream once finished.

The text rendering mode determines whether showing text causes glyph outlines to be stroked, filled, used as a clipping boundary, or some combination of the three.

Fill text.

Corresponds to filling the entire letter region.

Stroke text.

Corresponds to drawing the border/outline of the letter.

Fill then stroke text.

Neither fill nor stroke text thereby causing text to become invisible.

Fill the text and add to the clipping path.

Stroke the text and add to the clipping path.

Fill then stroke the text and then add to the clipping path.

Neither fill nor stroke but add to the clipping path.

Specifies the conversion from the transformed coordinate space to the original untransformed coordinate space.

The default .

Create a new with the X and Y translation values set.

Create a new with the X and Y scaling values set.

The value at (0, 0) - The scale for the X dimension.

The value at (0, 1).

The value at (1, 0).

The value at (1, 1) - The scale for the Y dimension.

The value at (2, 0) - translation in X.

The value at (2, 1) - translation in Y.

Get the value at the specific row and column.

The number of rows in the matrix.

The number of columns in the matrix.

Create a new .

The 9 values of the matrix.

Create a new .

Transform a point using this transformation matrix.

The original point. A new point which is the result of applying this transformation matrix.

Transform a point using this transformation matrix.

The original point X coordinate. The original point Y coordinate. A new point which is the result of applying this transformation matrix.

Transform an X coordinate using this transformation matrix.

The X coordinate. The transformed X coordinate.

Transform an Y coordinate using this transformation matrix.

The Y coordinate. The transformed Y coordinate.

Transform a rectangle using this transformation matrix.

The original rectangle. A new rectangle which is the result of applying this transformation matrix.

Transform a subpath using this transformation matrix.

The original subpath. A new subpath which is the result of applying this transformation matrix.

Transform a path using this transformation matrix.

The original path. A new path which is the result of applying this transformation matrix.

Generate a translated by the specified amount.

Create a new from the 6 values provided in the default PDF order.

Create a new from the 4 values provided in the default PDF order.

Create a new from the values.

Either all 9 values of the matrix, 6 values in the default PDF order or the 4 values of the top left square.

Multiplies one transformation matrix by another without modifying either matrix. Order is: (this * matrix).

The matrix to multiply The resulting matrix.

Multiplies the matrix by a scalar value without modifying this matrix.

The value to multiply. A new matrix which is multiplied by the scalar value.

Get the inverse of the current matrix.

Get the X scaling component of the current matrix.

The scaling factor for the x dimension in this matrix.

Determines whether 2 transformation matrices are equal.

Defines a type which is a union of two types.

Take an action for the item of the given type.

Run a func against the item of the given type.

Get the item if it is of the specific type.

Create a value of the first type.

Create a value of the second type.

The type representing items of the first type in a union.

The item.

Create first type.

The type representing items of the second type in a union.

The item.

Create second type.

Handles writing specified data types to an output stream in a valid PDF compliant format.

Write the to the stream as a .

Indicates where an object is located in the Xref.

Free object.

Located as an object in the file.

Located in a compressed object stream.

Information about where an object is located in the file according to the Xref (or brute force parsing).

Which type of location is indicated.

If is then byte offset, otherwise this is the stream number.

If is then the index of the object in the stream.

Create a location mapped to a byte offset in the file.

Create a location mapped to an index inside and object stream.