pdf

package
v0.0.0-...-6d64815 Latest Latest
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 Go to latest Published: Mar 29, 2023 License: GPL-2.0 Imports: 12 Imported by: 0

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Index

Constants

This section is empty.

Variables

View Source 
var (
	ErrUnsupportedChars = errors.New("unsupported chars")
	ErrDstTooShort      = errors.New("destination buffer is too short")
)
View Source 
var (
	ErrValueOutOfRange = errors.New("value out of range")

	ErrNotImplemented = errors.New("not implemented")

	ErrCannotConvertColor = errors.New("cannot convert color")
)
View Source 
var ErrUnsupportedVersion = errors.New("unsupported pdf version")

Functions

func CheckEOL 

func CheckEOL(e1, e2 byte) bool

func CheckValidUTF8ToPDFDocEncoding 

func CheckValidUTF8ToPDFDocEncoding(text []byte) (isValid, isASCIIEqual bool)

func CheckXRefEntryType 

func CheckXRefEntryType(c byte) bool

func ConvertUTF8ToPDFDocEncoding 

func ConvertUTF8ToPDFDocEncoding(text []byte) ([]byte, error)

func IndexLast 

func IndexLast(r io.ReadSeeker, what []byte) (pos int64, err error)

func IsPDFDocEncotingConcidentToUTF8 

func IsPDFDocEncotingConcidentToUTF8(text []byte) bool

func IsWhitespace 

func IsWhitespace(r rune) bool

func ResizeSlice 

func ResizeSlice[T any](slice []T, size int) []T

Types

type AcroForm 

type AcroForm struct{}

type Array 

type Array struct{}

func (*Array) Copy 

func (arr *Array) Copy() (Object, error)

func (*Array) Dictionary 

func (arr *Array) Dictionary() *Dictionary

func (*Array) Document 

func (arr *Array) Document() *Document

func (*Array) GetIndirectReference 

func (arr *Array) GetIndirectReference() *Reference

func (*Array) Kind 

func (arr *Array) Kind() ObjectKind

func (*Array) MarshalPDF 

func (arr *Array) MarshalPDF(_ *Writer) error

MarshalPDF encodes the receiver a PDF bytes.

func (*Array) Parent 

func (arr *Array) Parent() Object

func (*Array) SetParent 

func (arr *Array) SetParent(_ Object)

type ArrayElement 

type ArrayElement struct{ Element }

func (*ArrayElement) Array 

func (e *ArrayElement) Array() *Array

type BaseObject 

type BaseObject struct {
	// contains filtered or unexported fields
}

func (*BaseObject) Copy 

func (obj *BaseObject) Copy() (BaseObject, error)

func (*BaseObject) DelayedLoadStream 

func (obj *BaseObject) DelayedLoadStream() error

func (*BaseObject) Document 

func (obj *BaseObject) Document() *Document

func (*BaseObject) GetIndirectReference 

func (obj *BaseObject) GetIndirectReference() *Reference

func (*BaseObject) Parent 

func (obj *BaseObject) Parent() Object

func (*BaseObject) SetParent 

func (obj *BaseObject) SetParent(parent Object)

type CMYKColor 

type CMYKColor color.CMYK

func ConvertToCMYK 

func ConvertToCMYK(inColor Color) (cmyk CMYKColor, err error)

func (CMYKColor) ColorSpace 

func (cmyk CMYKColor) ColorSpace() ColorSpace

func (CMYKColor) RGBA 

func (cmyk CMYKColor) RGBA() (r, g, b, a uint32)

func (*CMYKColor) UnmarshalText 

func (cmyk *CMYKColor) UnmarshalText(text []byte) error

func (CMYKColor) Validate 

func (cmyk CMYKColor) Validate() error

type Catalog 

type Catalog struct {
	DictionaryElement
}

func (*Catalog) GetOrCreateMetadataObject 

func (c *Catalog) GetOrCreateMetadataObject() Object

func (*Catalog) Lang 

func (c *Catalog) Lang() Object

func (*Catalog) MarkInfo 

func (c *Catalog) MarkInfo() Object

func (*Catalog) Metadata 

func (c *Catalog) Metadata() Object

func (*Catalog) MetadataStream 

func (c *Catalog) MetadataStream() (stream []byte, err error)

func (*Catalog) PageMode 

func (c *Catalog) PageMode() PageMode

func (*Catalog) Root 

func (c *Catalog) Root() Object

func (*Catalog) SetMetadataStream 

func (c *Catalog) SetMetadataStream(value []byte) error

func (*Catalog) SetPageLayout 

func (c *Catalog) SetPageLayout(layout PageLayout)

func (*Catalog) SetPageMode 

func (c *Catalog) SetPageMode(mode PageMode)

type CieLabColor 

type CieLabColor struct {
	// CieL indicates lightness.
	CieL float64
	// CieA indicates A color value.
	CieA float64
	// CieB  indicates B color value.
	CieB float64
}

func (CieLabColor) ColorSpace 

func (lab CieLabColor) ColorSpace() ColorSpace

func (CieLabColor) Validate 

func (lab CieLabColor) Validate() error

type Color 

type Color interface {
	ColorSpace() ColorSpace
	Validate() error
}

func ColorFromObject 

func ColorFromObject(obj Object) (Color, error)

func ParseColor 

func ParseColor(text []byte) (color Color, err error)

func TransparentColor 

func TransparentColor() Color

type ColorSpace 

type ColorSpace uint8

ColorSpace is an enum for the colorspaces supported by PDF. 

const (
	// ColorSpaceUnknown is an uknown colorspace.
	ColorSpaceUnknown ColorSpace = iota
	ColorSpaceDeviceGray
	ColorSpaceDeviceRGB
	ColorSpaceDeviceCMYK
	ColorSpaceCalGray
	ColorSpaceCalRGB
	ColorSpaceLab ///< CIE-Lab
	ColorSpaceICCBased
	ColorSpaceIndexed
	ColorSpacePattern
	ColorSpaceSeparation
	ColorSpaceDeviceN
)

type Dictionary 

type Dictionary struct{}

func (*Dictionary) AddKeyIndirect 

func (dict *Dictionary) AddKeyIndirect(name Name, obj Object)

func (*Dictionary) Copy 

func (dict *Dictionary) Copy() (Object, error)

func (*Dictionary) Document 

func (dict *Dictionary) Document() *Document

func (*Dictionary) GetIndirectReference 

func (dict *Dictionary) GetIndirectReference() *Reference

func (*Dictionary) Key 

func (dict *Dictionary) Key(name Name) Object

func (*Dictionary) Kind 

func (dict *Dictionary) Kind() ObjectKind

func (*Dictionary) MarshalPDF 

func (dict *Dictionary) MarshalPDF(_ *Writer) error

MarshalPDF encodes the receiver a PDF bytes.

func (*Dictionary) Parent 

func (dict *Dictionary) Parent() Object

func (*Dictionary) SetParent 

func (dict *Dictionary) SetParent(_ Object)

type DictionaryElement 

type DictionaryElement struct{ Element }

func (*DictionaryElement) Dictionary 

func (e *DictionaryElement) Dictionary() *Dictionary

type Document 

type Document struct {
	Objects []Object
}

func NewDocument 

func NewDocument() *Document

type Element 

type Element struct {
	// contains filtered or unexported fields
}

func (*Element) Document 

func (e *Element) Document() *Document

func (*Element) Object 

func (e *Element) Object() Object

type Encrypt 

type Encrypt interface{}

func NewEncrypt 

func NewEncrypt() Encrypt

type FileSpec 

type FileSpec struct{}

type FontManager 

type FontManager struct{}

type Generation 

type Generation uint16
const FirstGeneration Generation = 1

type GrayColor 

type GrayColor color.Gray16

func ConvertToGrayScale 

func ConvertToGrayScale(inColor Color) (gray GrayColor, err error)

func (GrayColor) ColorSpace 

func (gray GrayColor) ColorSpace() ColorSpace

func (GrayColor) RGBA 

func (gray GrayColor) RGBA() (r, g, b, a uint32)

func (*GrayColor) UnmarshalText 

func (gray *GrayColor) UnmarshalText(text []byte) error

func (GrayColor) Validate 

func (gray GrayColor) Validate() error

type IndirectObjectList 

type IndirectObjectList struct{}

type Info 

type Info struct{}

type Marshaler 

type Marshaler interface {
	// MarshalPDF encodes the receiver a PDF bytes.
	MarshalPDF(*Writer) error
}

Marshaler is the interface implemented by PDF objects that can marshal themselves into valid PDF stream.

type MetaData 

type MetaData struct{}

type Name 

type Name string
const (
	KeyNull     Name = ""
	KeyContents Name = "Contents"
	KeyCount    Name = "Count"
	KeyEncrypt  Name = "Encrypt"
	KeyFilter   Name = "Filter"
	KeyFlags    Name = "Flags"
	KeyID       Name = "ID"
	KeyInfo     Name = "Info"
	KeyLength   Name = "Length"
	KeyRect     Name = "Rect"
	KeyRoot     Name = "Root"
	KeySize     Name = "Size"
	KeySubtype  Name = "Subtype"
	KeyType     Name = "Type"
	KeyMetadata Name = "Metadata"
	KeyTreeRoot Name = "StructTreeRoot"
	KeyMarkInfo Name = "MarkInfo"
	KeyLang     Name = "Lang"
	KeyPageMode Name = "PageMode"

	NameXRef Name = "XRef"
)

type NameObject 

type NameObject struct {
	BaseObject

	Name Name
}

func (*NameObject) Copy 

func (name *NameObject) Copy() (Object, error)

func (*NameObject) Document 

func (name *NameObject) Document() *Document

func (*NameObject) GetIndirectReference 

func (name *NameObject) GetIndirectReference() *Reference

func (*NameObject) Kind 

func (name *NameObject) Kind() ObjectKind

func (*NameObject) MarshalPDF 

func (name *NameObject) MarshalPDF(w *Writer) error

func (*NameObject) Parent 

func (name *NameObject) Parent() Object

func (*NameObject) SetParent 

func (name *NameObject) SetParent(parent Object)

type NameTree 

type NameTree struct{}

type Number 

type Number struct {
	// contains filtered or unexported fields
}

func (*Number) Copy 

func (num *Number) Copy() (Object, error)

func (*Number) Dictionary 

func (num *Number) Dictionary() *Dictionary

func (*Number) Document 

func (num *Number) Document() *Document

func (Number) Float64 

func (num Number) Float64() float64

func (*Number) GetIndirectReference 

func (num *Number) GetIndirectReference() *Reference

func (Number) Int 

func (num Number) Int() int

func (Number) Int64 

func (num Number) Int64() int64

func (*Number) Kind 

func (num *Number) Kind() ObjectKind

func (*Number) MarshalPDF 

func (num *Number) MarshalPDF(_ *Writer) error

MarshalPDF encodes the receiver a PDF bytes.

func (*Number) Parent 

func (num *Number) Parent() Object

func (*Number) SetParent 

func (num *Number) SetParent(_ Object)

type Object 

type Object interface {
	Marshaler

	SetParent(Object)
	Parent() Object

	Kind() ObjectKind
	Copy() (Object, error)
	Document() *Document
	Dictionary() *Dictionary
	GetIndirectReference() *Reference
}

type ObjectKind 

type ObjectKind uint8
const (
	// ObjectKindUnknown
	ObjectKindUnknown ObjectKind = iota
	// ObjectKindBool
	ObjectKindBool
	// ObjectKindNumber
	ObjectKindNumber
	// ObjectKindString
	ObjectKindString
	// ObjectKindName
	ObjectKindName
	// ObjectKindArray
	ObjectKindArray
	// ObjectKindDictionary
	ObjectKindDictionary
	// ObjectKindNull
	ObjectKindNull
	// ObjectKindReference
	ObjectKindReference
	// ObjectKindRawData
	ObjectKindRawData
)

type Outlines 

type Outlines struct{}

type Page 

type Page struct{}

type PageCollection 

type PageCollection struct {
	// contains filtered or unexported fields
}

func NewPageCollection 

func NewPageCollection(document *Document) *PageCollection

func (*PageCollection) AddPage 

func (pc *PageCollection) AddPage(size Rect) *Page

func (*PageCollection) AddPageAt 

func (pc *PageCollection) AddPageAt(index int, size Rect) (*Page, error)

func (*PageCollection) AppendDocumentPages 

func (pc *PageCollection) AppendDocumentPages(
	document *Document, pageIndex int, count int,
) error

func (*PageCollection) Index 

func (pc *PageCollection) Index(i int) (*Page, bool)

func (*PageCollection) InsertDocumentPages 

func (pc *PageCollection) InsertDocumentPages(
	index int, document *Document, pageIndex int, count int,
) error

func (*PageCollection) Len 

func (pc *PageCollection) Len() int

func (*PageCollection) RemovePage 

func (pc *PageCollection) RemovePage(index int) bool

type PageLayout 

type PageLayout uint8
const (
	PageLayoutIgnore PageLayout = iota
	PageLayoutDefault
	PageLayoutSinglePage
	PageLayoutOneColumn
	PageLayoutTwoColumnLeft
	PageLayoutTwoColumnRight
	PageLayoutTwoPageLeft
	PageLayoutTwoPageRight
)

type PageMode 

type PageMode Name
const (
	PageModeDontCare       PageMode = ""
	PageModeUseNone        PageMode = "UseNone"
	PageModeUseThumbs      PageMode = "UseThumbs"
	PageModeUseBookmarks   PageMode = "UseBookmarks"
	PageModeFullScreen     PageMode = "FullScreen"
	PageModeUseOC          PageMode = "UseOC"
	PageModeUseAttachments PageMode = "UseAttachments"
)

type PageSize 

type PageSize interface{ PageSize() Rect }

type PageSizeFunc 

type PageSizeFunc func() Rect

func (PageSizeFunc) PageSize 

func (f PageSizeFunc) PageSize() Rect

type Pos 

type Pos struct {
	X float64
	Y float64
}

type RGBColor 

type RGBColor color.NRGBA64

func ConvertToRGB 

func ConvertToRGB(inColor Color) (rgb RGBColor, err error)

func (RGBColor) ColorSpace 

func (rgb RGBColor) ColorSpace() ColorSpace

func (RGBColor) RGBA 

func (rgb RGBColor) RGBA() (r, g, b, a uint32)

func (*RGBColor) UnmarshalText 

func (rgb *RGBColor) UnmarshalText(text []byte) error

func (RGBColor) Validate 

func (rgb RGBColor) Validate() error

type Rect 

type Rect struct {
	Pos
	Size
}

func PageSizeA0 

func PageSizeA0() Rect

func PageSizeA1 

func PageSizeA1() Rect

func PageSizeA2 

func PageSizeA2() Rect

func PageSizeA3 

func PageSizeA3() Rect

func PageSizeA4 

func PageSizeA4() Rect

func PageSizeA5 

func PageSizeA5() Rect

func PageSizeA6 

func PageSizeA6() Rect

func PageSizeLegal 

func PageSizeLegal() Rect

func PageSizeLetter 

func PageSizeLetter() Rect

func PageSizeTabloid 

func PageSizeTabloid() Rect

type Reference 

type Reference struct {
	ObjectNo     uint32
	GenerationNo Generation
}

func (Reference) IsIndirect 

func (ref Reference) IsIndirect() bool

func (Reference) MarshalPDF 

func (ref Reference) MarshalPDF(w *Writer) error

func (Reference) String 

func (ref Reference) String() string

type SeparationColor 

type SeparationColor struct {
	Name           string
	Density        float64
	AlternateColor Color
}

func SeparationColorAll 

func SeparationColorAll() SeparationColor

func SeparationColorNone 

func SeparationColorNone() SeparationColor

func (SeparationColor) ColorSpace 

func (sep SeparationColor) ColorSpace() ColorSpace

func (SeparationColor) Validate 

func (sep SeparationColor) Validate() error

type Size 

type Size struct {
	Width  float64
	Height float64
}

type Trailer 

type Trailer struct{}

type UTF8ToPDFDocEncoder 

type UTF8ToPDFDocEncoder struct {
	// contains filtered or unexported fields
}

func NewUTF8ToDocEncoder 

func NewUTF8ToDocEncoder(w io.Writer) *UTF8ToPDFDocEncoder

func (*UTF8ToPDFDocEncoder) Close 

func (enc *UTF8ToPDFDocEncoder) Close() error

func (*UTF8ToPDFDocEncoder) Reset 

func (enc *UTF8ToPDFDocEncoder) Reset(w io.Writer)

func (*UTF8ToPDFDocEncoder) Write 

func (enc *UTF8ToPDFDocEncoder) Write(p []byte) (n int, err error)

type Variant 

type Variant any

type Version 

type Version string

Version is an enumeration for supported PDF versions. 

const (
	// Version10 PDF 1.0.
	Version10 Version = "1.0"
	// Version11 PDF 1.1.
	Version11 Version = "1.1"
	// Version12 PDF 1.2.
	Version12 Version = "1.2"
	// Version13 PDF 1.3.
	Version13 Version = "1.3"
	// Version14 PDF 1.4.
	Version14 Version = "1.4"
	// Version15 PDF 1.5.
	Version15 Version = "1.5"
	// Version16 PDF 1.6.
	Version16 Version = "1.6"
	// Version17 PDF 1.7.
	Version17 Version = "1.7"
	// Version20 PDF 2.0
	Version20 Version = "2.0"
)

func (Version) Validate 

func (ver Version) Validate() error

type WriteFlag 

type WriteFlag uint16

WriteFlag is the flag that is used by the pdf.Writer. 

const (
	// WriteFlagClean is used to created a PDF
	// that is readable in a text editor, i.e.
	// isert spaces and linebreaks between tokens.
	WriteFlagClean WriteFlag = 1 << iota
	// WriteFlagNoInlineLiteral is used to prevent writing spaces before literal types
	// (numerical, references, null).
	WriteFlagNoInlineLiteral
	// WriteFlagNoFlateCompress is used to write
	// PDF with Flate compression.
	WriteFlagNoFlateCompress
	// WriteFlagNoPDFAPreserve is used to write
	// compact (WriteFlagsClean is unsed) code,
	// preserving PDF/A compliance is not required.
	WriteFlagNoPDFAPreserve WriteFlag = 256
)

type Writer 

type Writer struct {
	// contains filtered or unexported fields
}

func NewWriter 

func NewWriter(w io.Writer, options ...WriterOptionFunc) *Writer

func (*Writer) HasFlag 

func (w *Writer) HasFlag(flag WriteFlag) bool

func (*Writer) IsCleanWrite 

func (w *Writer) IsCleanWrite() bool

func (*Writer) Write 

func (w *Writer) Write(p []byte) (n int, err error)

func (*Writer) WriteByte 

func (w *Writer) WriteByte(x byte) (err error)

type WriterOptionFunc 

type WriterOptionFunc func(*Writer)

func WriteClean 

func WriteClean() WriterOptionFunc

func WriteEncryptor 

func WriteEncryptor(encrypt *Encrypt) WriterOptionFunc

func WriteNoCompress 

func WriteNoCompress() WriterOptionFunc

func WriteNoInlineLiteral 

func WriteNoInlineLiteral() WriterOptionFunc

func WriteNoPDFAPreserve 

func WriteNoPDFAPreserve() WriterOptionFunc

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