Справочник Пользователя для Adobe acrobat 7.0.5 sdk

Searching and Indexing

When creating a replacement search plug-in for Acrobat, you must decide what indexes 
your search plug-in will use. You can either create your own indexes (see 

Highlighting Text”

) or search the Lextek indexes created by the Acrobat 7 Catalog plug-in.

You can use the Acrobat SDK to create a full-text index of a set of PDF documents. A full-text 
index is a searchable database of all the text in the documents. After building an index, you 
can use search the entire library quickly. 

You can build and manipulate indices from a plug-in, from Acrobat JavaScript or from an 
external application using IAC (DDE or Apple events) calls. 

For indexing PDF files, Acrobat provides text extraction APIs. Text extraction also supplies 
position information that can be used to highlight search hits in the original PDF file. The 
text extraction tools are provided as calls in the plug-in API on the Acrobat platforms 
(Mac OS and Windows). 

You can extract ASCII text from a PDF file using a plug-in or using Acrobat JavaScript. You 
can also save the PDF document as text or rich text.

It is possible to extend and customize indexes for multiple PDF documents using the 
Acrobat JavaScript Catalog, CatalogJob, and Index objects. These objects may be used to 
build, retrieve, or remove indexes. 

The Index object represents a Catalog-generated index and contains a build method that 
is used to create an index.

For more information, see the Acrobat JavaScript Scripting Guide.

Acrobat Catalog is a plug-in that allows you to create a full-text index of a set of PDF 
documents. The Catalog plug-in has an HFT consisting of several methods that plug-in 
developers can import and use. In addition, Catalog supports DDE, and broadcasts several 
Windows messages.

For more information, see the Acrobat and PDF Library API Overview.