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README.md

Corpus-tagged Text Converter

Circle CI

A PHP library for converting files tagged with corpus metadata to JSON, PHP, or XML.

Screenshot of Conversion

History

Corpus linguistics researchers use a markup-like syntax to provide metadata about texts. For consumption by applications, this syntax needs to be converted into a more universal, machine-readable format. The format chosen was JSON.

Basic Usage

The included /demo/index.php file contains a conversion form demonstration.

Make your code aware of the TagConverter class via your favorite method (e.g., use or require)

Then pass a string of text into the class:

$text = TagConverter::json('<MyTag: 123>My tagged text here');
echo $text;
// Returns {"MyTag":"123","text":"My tagged text here"}

$text = TagConverter::php('<MyTag: 123>My tagged text here');
echo $text;
// Returns array('MyTag' => '123', 'text' => 'My tagged text here')

$text = TagConverter::xml('<MyTag: 123>My tagged text here');
echo $text;
// Returns <?xml version="1.0"?><root><MyTag>123</MyTag><text>My tagged text here</text></root>

Expected input format

The corpus style tagging syntax expected by the library is defined as follows:

  1. Tags must be wrapped in < and >
  2. Tag names and tag values may only alphanumeric characters, spaces, underscores, and hypens.
  3. Tag names must be separated from tag values by a :
  4. Spaces at the beginning at end of tag names or tag values are ignored; spaces within tag values will be preserved
  5. Everything not wrapped in < and > will be considered "text"
Status Tag Example Explanation
Good <MyTag:SomeText>
Good <My Tag:Some Text> Spaces in tag names & values OK
Good < My Tag : Some Text > Spaces padding tag names & values OK
Good < My-Tag : Some_Text > Underscores & hyphens OK
Bad < My/Tag : Some:Text > Other characters not OK

Testing

Unit Tests can be run (after composer install) by executing vendor/bin/phpunit

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