Index

  1. \SetaPDF
    1. Extractor
    2. Extractor
      1. Strategy
        1. AbstractStrategy
        2. ExactPlain
        3. Glyph
        4. Plain
        5. Word
        6. WordGroup

SetaPDF_Extractor_Strategy_ExactPlain Extraction strategy for plain text by using single glyphs for rebuilding the text.

File: /SetaPDF v2/Extractor/Strategy/ExactPlain.php

Class hierarchy

Summary

Methods

Properties

Properties

$_boundaryFilter

protected null|SetaPDF_Extractor_Filter_Rectangle SetaPDF_Extractor_Strategy_AbstractStrategy::$_boundaryFilter

The boundary filter.

$_cleanStreamCallback

protected callable SetaPDF_Extractor_Strategy_AbstractStrategy::$_cleanStreamCallback

A callback that is called before processing a stream.

$_contentParser

protected SetaPDF_Core_Parser_Content SetaPDF_Extractor_Strategy_Plain::$_contentParser

$_filter

protected null|SetaPDF_Extractor_Filter_FilterInterface SetaPDF_Extractor_Strategy_AbstractStrategy::$_filter

A filter.

$_graphicState

protected SetaPDF_Core_Canvas_GraphicState SetaPDF_Extractor_Strategy_Plain::$_graphicState

The graphic state instance.

$_ignoreFaultyStreams

protected bool SetaPDF_Extractor_Strategy_AbstractStrategy::$_ignoreFaultyStreams = false

Defines wether to continue when a stream cannot be decoded or not.

$_ignoreSpaceCharacter

protected bool SetaPDF_Extractor_Strategy_Glyph::$_ignoreSpaceCharacter = false

Defines whether space characters should be ignored or not.

$_items

protected SetaPDF_Extractor_TextItem[] SetaPDF_Extractor_Strategy_Plain::$_items = array()

The text items.

$_keepIntersectingSpaces

protected bool SetaPDF_Extractor_Strategy_Plain::$_keepIntersectingSpaces = false

Defines whether intersecting spaces should be ignored or not.

$_resources

protected SetaPDF_Core_Type_Dictionary SetaPDF_Extractor_Strategy_Plain::$_resources

The stream resources dictionary.

$_sorter

protected SetaPDF_Extractor_Sorter SetaPDF_Extractor_Strategy_Plain::$_sorter

The sorter instance.

$_textCount

protected int SetaPDF_Extractor_Strategy_Plain::$_textCount = 0

A text item counter.

$spaceWidthFactor

public float SetaPDF_Extractor_Strategy_Plain::$spaceWidthFactor = 2.0

A factor to calculate whether a distance can be seen as a character separator.

The fonts space character width is divided by this factor to define the minimum space for a character separator.


Methods

__construct()

public SetaPDF_Extractor_Strategy_AbstractStrategy::__construct (
void
)

The constructor.

_accept()

protected SetaPDF_Extractor_Strategy_Glyph::_accept (): bool|string

Proxy method that forwards the call to a filter instance if available.

This strategy filters space characters automatically if specified (see setIgnoreSpaceCharacter().

Parameters
$textItem : SetaPDF_Extractor_TextItem
 
Exceptions

Throws SetaPDF_Core_Exception

Throws SetaPDF_Extractor_Exception

See

_cleanResult()

public SetaPDF_Extractor_Strategy_Plain::_cleanResult (
string $result
): string

Callback to clean up the resulting text.

Parameters
$result : string
 

_getParser()

protected SetaPDF_Extractor_Strategy_Plain::_getParser (
string $stream
): SetaPDF_Core_Parser_Content

Creates the content stream parser.

Parameters
$stream : string
 

_getSubInstance()

protected SetaPDF_Extractor_Strategy_Glyph::_getSubInstance (): SetaPDF_Extractor_Strategy_Glyph

Get an instance of the same strategy for processing another stream (e.g. a Form XObject stream).

Parameters
$gs : SetaPDF_Core_Canvas_GraphicState
 

_ignore()

protected SetaPDF_Extractor_Strategy_Plain::_ignore (
string $string, string $prevString, SetaPDF_Extractor_TextItem $item, SetaPDF_Extractor_TextItem $prevItem
): boolean

Method to allow implementation of individual logic.

Parameters
$string : string
 
$prevString : string
 
$item : SetaPDF_Extractor_TextItem
 
$prevItem : SetaPDF_Extractor_TextItem
 

_onBeginOrEndText()

public SetaPDF_Extractor_Strategy_Plain::_onBeginOrEndText (
array $arguments, string $operator
): void

Callback for begin or end text operators (BT/ET).

Parameters
$arguments : array
 
$operator : string
 

_onCurrentTransformationMatrix()

public SetaPDF_Extractor_Strategy_Plain::_onCurrentTransformationMatrix (
array $arguments, string $operator
): void

Callback for ctm changes (cm).

Parameters
$arguments : array
 
$operator : string
 

_onFormXObject()

public SetaPDF_Extractor_Strategy_Plain::_onFormXObject (
array $arguments, string $operator
): void

Callback for painting a specified XObject.

Parameters
$arguments : array
 
$operator : string
 
Exceptions

Throws SetaPDF_Core_Exception

Throws SetaPDF_Core_Filter_Exception

Throws SetaPDF_Core_Parser_Pdf_InvalidTokenException

Throws SetaPDF_Core_Type_Exception

Throws SetaPDF_Exception

Throws SetaPDF_Exception_NotImplemented

_onGraphicStateChange()

public SetaPDF_Extractor_Strategy_Plain::_onGraphicStateChange (
array $arguments, string $operator
): void

Callback for graphic state changes operators (q/Q).

Parameters
$arguments : array
 
$operator : string
 

_onInlineImage()

public SetaPDF_Extractor_Strategy_Plain::_onInlineImage (
array $arguments, string $operator
): false|void

Callback for inline image operator

Parameters
$arguments : array
 
$operator : string
 

_onTextPosition()

public SetaPDF_Extractor_Strategy_Plain::_onTextPosition (
array $arguments, string $operator
): void

Callback for text position operators.

Parameters
$arguments : array
 
$operator : string
 

_onTextShow()

public SetaPDF_Extractor_Strategy_Plain::_onTextShow (
array $arguments, string $operator
): void

Callback for text show operators.

Parameters
$arguments : array
 
$operator : string
 
Exceptions

Throws SetaPDF_Core_Exception

_onTextState()

public SetaPDF_Extractor_Strategy_Plain::_onTextState (
array $arguments, string $operator
): void

Callback for text state operators.

All states has to be passed to the current graphic state as defined in PDF 32000-1:2008, Table 52 on page 121.

Parameters
$arguments : array
 
$operator : string
 
Exceptions

Throws SetaPDF_Extractor_Exception

_showText()

protected SetaPDF_Extractor_Strategy_Glyph::_showText (
string $string
): void

Method that shows text.

Parameters
$string : string
 
Exceptions

Throws SetaPDF_Core_Exception

_showTextStrings()

public SetaPDF_Extractor_Strategy_Plain::_showTextStrings (
array $textStrings
): void

Callback that is called if text strings should be shown.

Parameters
$textStrings : array
 
Exceptions

Throws SetaPDF_Core_Exception

getBoundary()

public SetaPDF_Extractor_Strategy_AbstractStrategy::getBoundary (
void
): SetaPDF_Core_Geometry_Rectangle|null

getCleanStreamCallback()

public SetaPDF_Extractor_Strategy_AbstractStrategy::getCleanStreamCallback (
void
): callable|null

Get the callback that is called before a stream is processed.

getFilter()

public SetaPDF_Extractor_Strategy_AbstractStrategy::getFilter (
void
): null|SetaPDF_Extractor_Filter_FilterInterface

Get the filter.

getGraphicState()

public SetaPDF_Extractor_Strategy_Plain::getGraphicState (
void
): SetaPDF_Core_Canvas_GraphicState

Get the graphic state.

getIgnoreSpaceCharacter()

public SetaPDF_Extractor_Strategy_Glyph::getIgnoreSpaceCharacter (
void
): bool

Gets whether a space character should be fetched or not.

getKeepIntersecingSpaces()

WARNING: This method is marked as deprecated!

Use getKeepIntersectingSpaces() instead.

public SetaPDF_Extractor_Strategy_Plain::getKeepIntersecingSpaces (
void
): bool

getKeepIntersectingSpaces()

public SetaPDF_Extractor_Strategy_Plain::getKeepIntersectingSpaces (
void
): bool

Get a flag which defines whether intersecting spaces are ignored or not.

getResult()

public SetaPDF_Extractor_Strategy_ExactPlain::getResult (
string $stream, SetaPDF_Core_Type_Dictionary $resources
): string

Get the plain text from a stream.

Parameters
$stream : string
 
$resources : SetaPDF_Core_Type_Dictionary
 
Exceptions

Throws SetaPDF_Core_Exception

getSorter()

public SetaPDF_Extractor_Strategy_Plain::getSorter (
void
): SetaPDF_Extractor_Sorter|SetaPDF_Extractor_Sorter_Baseline

Get the sorter instance.

If none was set a baseline sorter is created automatically.

process()

public SetaPDF_Extractor_Strategy_Plain::process (
string $stream, SetaPDF_Core_Type_Dictionary $resources
): SetaPDF_Extractor_TextItem[]

Processes a stream through the plain text strategy.

Parameters
$stream : string
 
$resources : SetaPDF_Core_Type_Dictionary
 
Exceptions

Throws SetaPDF_Core_Exception

Throws SetaPDF_Core_Parser_Pdf_InvalidTokenException

setBoundary()

public SetaPDF_Extractor_Strategy_AbstractStrategy::setBoundary (
[ SetaPDF_Core_Geometry_Rectangle|null $boundary = null ]
): void

Sets the boundary for the current strategy.

Parameters
$boundary : SetaPDF_Core_Geometry_Rectangle|null
 

setCleanStreamCallback()

public SetaPDF_Extractor_Strategy_AbstractStrategy::setCleanStreamCallback (
[ callable|null $callback = null ]
): void

Set a callback that is called before processing a stream.

Parameters
$callback : callable|null
 

setFilter()

public SetaPDF_Extractor_Strategy_AbstractStrategy::setFilter (): void

Set a filter.

Parameters
$filter : SetaPDF_Extractor_Filter_FilterInterface|null
 

setGraphicState()

public SetaPDF_Extractor_Strategy_Plain::setGraphicState (): void

Set the graphic state.

Parameters
$graphicState : SetaPDF_Core_Canvas_GraphicState
 

setIgnoreFaultyStreams()

public SetaPDF_Extractor_Strategy_AbstractStrategy::setIgnoreFaultyStreams (
boolean $ignoreFaultyStreams
): void

Define wether to continue when a stream cannot be decoded or not.

Parameters
$ignoreFaultyStreams : boolean
 

setIgnoreSpaceCharacter()

public SetaPDF_Extractor_Strategy_Glyph::setIgnoreSpaceCharacter (
[ bool $ignoreSpaceCharacter = true ]
): void

Defines whether a space character should be fetched or not.

If this is set to true, the strategy will use the found space character as a delimiter. If this is set to false (default), the strategy will calculate a delimiter by the distance of 2 characters/glyphs.

Parameters
$ignoreSpaceCharacter : bool
 

setKeepIntersectingSpaces()

public SetaPDF_Extractor_Strategy_Plain::setKeepIntersectingSpaces (
[ bool $keep = true ]
): void

Set a flag which defines whether interacting spaces are ignored or not.

By default, this is set to false which removes a space or white-space character which intersects with another character for more than 55 percent.

Parameters
$keep : bool
 

setSorter()

public SetaPDF_Extractor_Strategy_Plain::setSorter (): void

Set a sorter instance.

Parameters
$sorter : SetaPDF_Extractor_Sorter
 

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