_txt.tools.php

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<?php

    // costanti
        define( 'REPORT_WIDTH'                  , 80 );

    function txtHeader( $t, $c = '=', $w = REPORT_WIDTH ) {

        $t = strtoupper( $t );

        $t .= PHP_EOL . txtDateTimeLine( $c );

        return $t;

    }

    function txtDateTime( $f = 'Y-m-d H:i:s', $d = NULL ) {

        return ( $d === NULL ) ? date( $f ) : date( $f, $d );

    }

    function txtLine( $c = '-', $w = REPORT_WIDTH ) {

        return str_repeat( $c, $w );

    }

    function txtFullLine( $c = '-', $w = REPORT_WIDTH ) {

        return txtLine( $c, $w ) . PHP_EOL;

    }

    function txtDateTimeLine( $c = '-', $d = NULL, $w = REPORT_WIDTH ) {

        $ts = '[ ' . txtDateTime() . ' ]';

        $w -= strlen( $ts );

        return txtLine( $c, $w ) . $ts . PHP_EOL;

    }

    function txtData( $l, $d, $c = ' ', $w = REPORT_WIDTH ) {

        $l .= ' ';
        $d = ' ' . $d;
        $m = $w - ( strlen( $d ) );

        if( strlen( $l ) > $m ) {
            $l = riduciStringa( $l, $m );
        }

        $w -= strlen( $l ) + strlen( $d );

        return $l . txtLine( $c, $w ) . $d . PHP_EOL;

    }

    function txtTable( $h, $d, $l = NULL, $w = REPORT_WIDTH ) {

        $t = NULL;

        if( empty( $l ) ) { $l = array_keys( $h ); }

        array_unshift( $d, array_combine( array_keys( $h ), $l ) );

        foreach( $d as $n => $r ) {
            foreach( $h as $k => $v ) {
                if( substr( $k, 0, 9 ) == 'timestamp' && is_numeric( trim( $r[ $k ] ) ) && ! empty( $r[ $k ] ) ) { $r[ $k ] = date( 'Y-m-d H:i:s', $r[ $k ] ); }
                if( empty( $r[ $k ] ) ) { $r[ $k ] = '-'; }
                echo txt2fixed( $r[ $k ], $v );
            }
            echo PHP_EOL;
            if( $n === array_key_first( $d ) ) { echo txtLine() . PHP_EOL; }
        }

    }

    function txtText( $t, $j = true, $w = REPORT_WIDTH ) {

        $t = wordwrap( $t, $w, "\n" );

        if( $j === true ) {
            $lines = explode( "\n", $t );
            foreach( $lines as &$line ) {
                if( substr( $line, -1 ) != '.' ) {
                    $line = justify( $line );
                }
            }
            return implode( "\n", $lines );
        } else {
            return $t;
        }

    }

function justify( $str, $maxlen = REPORT_WIDTH) {

    $str = trim($str);

    $strlen = mb_strlen($str);

    if ($strlen >= $maxlen) {
        $str = wordwrap($str, $maxlen);
        $str = explode("\n", $str);
        $str = $str[0];
        $strlen = mb_strlen($str);
    }

    $space_count = mb_substr_count($str, ' ');
    if ($space_count === 0) {
        return str_pad($str, $maxlen, ' ', STR_PAD_BOTH);
    }

    $extra_spaces_needed = $maxlen - $strlen;
    $total_spaces = $extra_spaces_needed + $space_count;

    $space_string_avg_length = $total_spaces / $space_count;
    $short_string_multiplier = floor($space_string_avg_length);
    $long_string_multiplier = ceil($space_string_avg_length);

    $short_fill_string = str_repeat(' ', $short_string_multiplier);
    $long_fill_string = str_repeat(' ', $long_string_multiplier);

    $offset = $space_string_avg_length - $short_string_multiplier;
    $limit = ceil( $offset * $space_count );
    $explode_limit = $limit + 1;
#    echo gettype( $limit ) . PHP_EOL;
#    var_dump( $limit );

    // $words_split_by_long = mb_split("\s", $str, ($limit+1));
    $words_split_by_long = explode(' ', $str, $explode_limit );
#    $words_split_by_long = explode(' ', $str, 3);
    $words_split_by_short = $words_split_by_long[$limit];
    $words_split_by_short = str_replace(' ', $short_fill_string, $words_split_by_short);
    $words_split_by_long[$limit] = $words_split_by_short;

#    print_r( $words_split_by_long );

    $result = implode($long_fill_string, $words_split_by_long);
/*
    echo '--> ' . $str . PHP_EOL;
    echo 'stringa: ' . $strlen . PHP_EOL;
    echo 'spazi: ' . $space_count . PHP_EOL;
    echo 'spazi aggiuntivi richiesti: ' . $extra_spaces_needed . PHP_EOL;
    echo 'spaziatura media: ' . $space_string_avg_length . PHP_EOL;
    echo 'max: ' . $maxlen . PHP_EOL;
    echo 'fill piccolo: ' . $short_string_multiplier . PHP_EOL;
    echo 'fill grande: ' . $long_string_multiplier . PHP_EOL;
    echo 'fill grandi richiesti: ' . $limit . PHP_EOL;
    echo 'limite di explode: ' . $explode_limit . PHP_EOL;
    echo 'offset: ' . $offset . PHP_EOL;
    echo 'limite calcolato con: (' . $space_string_avg_length . ' - ' . $short_string_multiplier . ') * ' . $space_count . PHP_EOL;
    echo 'segmenti per il fill lungo: ' . implode( '|', $words_split_by_long ) . PHP_EOL;
    echo 'segmenti per il fill corto: ' . $words_split_by_short . PHP_EOL;
    echo PHP_EOL;
*/
    return $result;
}

    function txt2fixed( $t, $w ) {

        if( strlen( $t ) >= $w ) {
            $x = riduciStringa( $t, $w );
        } else {
            $x = str_pad( $t, $w - 1 );
        }

        return $x  . ' ';

    }

?>