# Image::ExifTool::Import - phpMan

## NAME
    [Image::ExifTool::Import] - Import CSV and JSON database files

## SYNOPSIS
        use [Image::ExifTool::Import] qw(ReadCSV ReadJSON);

        $err = ReadCSV($csvFile, \%database);

        $err = ReadJSON($jsonfile, \%database);

## DESCRIPTION
    This module contains routines for importing tag information from CSV
    (Comma Separated Value) and JSON (JavaScript Object Notation) database
    files.

## EXPORTS
    Exports nothing by default, but ReadCSV and ReadJSON may be exported.

## METHODS
  ReadCSV / ReadJSON
    Read CSV or JSON file into a database hash.

    Inputs:
        0) CSV file name or file reference.

        1) Hash reference for database object.

        2) Optional string used to represent an undefined (missing) tag
        value. (Used for deleting tags.)

        3) For ReadCSV this gives the delimiter for CSV entries, with a
        default of ",". For ReadJSON this is the character set for
        converting Unicode escape sequences in strings, with a default of
        "UTF8". See the ExifTool Charset option for a list of valid
        character sets.

    Return Value:
        These functions return an error string, or undef on success and
        populate the database hash with entries from the CSV or JSON file.
        Entries are keyed based on the SourceFile column of the CSV or JSON
        information, and are stored as hash lookups of tag name/value for
        each SourceFile.

## AUTHOR
    Copyright 2003-2022, Phil Harvey (philharvey66 at gmail.com)

    This library is free software; you can redistribute it and/or modify it
    under the same terms as Perl itself.

## SEE ALSO
    Image::[ExifTool(3pm)]