KeyView 24.4
KeyView Filter SDK C++ Programming Guide

# filter_document

Filtering is the extraction of text from a document. This sample program makes use of the filter API method.

The program takes two positional arguments:

- an input file
- an output text file

By default, the ouput is encoded in UTF-8.

    $ ./filter_document input_file output.txt

CAUTION: Not all document formats can be filtered. For example, trying to filter a PNG file produces an error message. For some file formats (notably emails), Keyview treats the text as an embedded subfile that you should access by using the extraction API, not the filter API.

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Version 24.4 | Last updated September 2024

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Product: IDOL KeyView 24.4

Topic Title: filter_document