Consolidation\OutputFormatters\Transformations\WordWrapper::columnAutowidth()

Complexity

Conditions	15
Paths	72

Size

Total Lines	76
Code Lines	35

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
    protected function columnAutowidth($rows, $widths)
    {
        $auto_widths = $widths;

        // First we determine the distribution of row lengths in each column.
        // This is an array of descending character length keys (i.e. starting at
        // the rightmost character column), with the value indicating the number
        // of rows where that character column is present.
        $col_dist = array();
        foreach ($rows as $rowkey => $row) {
            foreach ($row as $col_id => $cell) {
                if (empty($widths[$col_id])) {
                    $length = strlen($cell);
                    if ($length == 0) {
                        $col_dist[$col_id][0] = 0;
                    }
                    while ($length > 0) {
                        if (!isset($col_dist[$col_id][$length])) {
                            $col_dist[$col_id][$length] = 0;
                        }
                        $col_dist[$col_id][$length]++;
                        $length--;
                    }
                }
            }
        }
        foreach ($col_dist as $col_id => $count) {
            // Sort the distribution in decending key order.
            krsort($col_dist[$col_id]);
            // Initially we set all columns to their "ideal" longest width
            // - i.e. the width of their longest column.
            $auto_widths[$col_id] = max(array_keys($col_dist[$col_id]));
        }

        // We determine what width we have available to use, and what width the
        // above "ideal" columns take up.
        $available_width = $this->width - (count($auto_widths) * 2);
        $auto_width_current = array_sum($auto_widths);

        // If we need to reduce a column so that we can fit the space we use this
        // loop to figure out which column will cause the "least wrapping",
        // (relative to the other columns) and reduce the width of that column.
        while ($auto_width_current > $available_width) {
            $count = 0;
            $width = 0;
            foreach ($col_dist as $col_id => $counts) {
                // If we are just starting out, select the first column.
                if ($count == 0 ||
                 // OR: if this column would cause less wrapping than the currently
                 // selected column, then select it.
                 (current($counts) < $count) ||
                 // OR: if this column would cause the same amount of wrapping, but is
                 // longer, then we choose to wrap the longer column (proportionally
                 // less wrapping, and helps avoid triple line wraps).
                 (current($counts) == $count && key($counts) > $width)) {
                    // Select the column number, and record the count and current width
                    // for later comparisons.
                    $column = $col_id;
                    $count = current($counts);
                    $width = key($counts);
                }
            }
            if ($width <= 1) {
                // If we have reached a width of 1 then give up, so wordwrap can still progress.
                break;
            }
            // Reduce the width of the selected column.
            $auto_widths[$column]--;

The variable $column does not seem to be defined for all execution paths leading up to this point.

            // Reduce our overall table width counter.
            $auto_width_current--;
            // Remove the corresponding data from the disctribution, so next time
            // around we use the data for the row to the left.
            unset($col_dist[$column][$width]);
        }
        return $auto_widths;
    }
}