1 files changed, 346 insertions, 0 deletions
diff --git a/vendor/dragonmantank/cron-expression/src/Cron/AbstractField.php b/vendor/dragonmantank/cron-expression/src/Cron/AbstractField.php
new file mode 100644
index 0000000..df2848d
--- /dev/null
+++ b/vendor/dragonmantank/cron-expression/src/Cron/AbstractField.php
@@ -0,0 +1,346 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Cron;
+
+use DateTimeInterface;
+
+/**
+ * Abstract CRON expression field.
+ */
+abstract class AbstractField implements FieldInterface
+{
+    /**
+     * Full range of values that are allowed for this field type.
+     *
+     * @var array
+     */
+    protected $fullRange = [];
+
+    /**
+     * Literal values we need to convert to integers.
+     *
+     * @var array
+     */
+    protected $literals = [];
+
+    /**
+     * Start value of the full range.
+     *
+     * @var int
+     */
+    protected $rangeStart;
+
+    /**
+     * End value of the full range.
+     *
+     * @var int
+     */
+    protected $rangeEnd;
+
+    /**
+     * Constructor
+     */
+    public function __construct()
+    {
+        $this->fullRange = range($this->rangeStart, $this->rangeEnd);
+    }
+
+    /**
+     * Check to see if a field is satisfied by a value.
+     *
+     * @internal
+     * @param int $dateValue Date value to check
+     * @param string $value Value to test
+     *
+     * @return bool
+     */
+    public function isSatisfied(int $dateValue, string $value): bool
+    {
+        if ($this->isIncrementsOfRanges($value)) {
+            return $this->isInIncrementsOfRanges($dateValue, $value);
+        }
+
+        if ($this->isRange($value)) {
+            return $this->isInRange($dateValue, $value);
+        }
+
+        return '*' === $value || $dateValue === (int) $value;
+    }
+
+    /**
+     * Check if a value is a range.
+     *
+     * @internal
+     * @param string $value Value to test
+     *
+     * @return bool
+     */
+    public function isRange(string $value): bool
+    {
+        return false !== strpos($value, '-');
+    }
+
+    /**
+     * Check if a value is an increments of ranges.
+     *
+     * @internal
+     * @param string $value Value to test
+     *
+     * @return bool
+     */
+    public function isIncrementsOfRanges(string $value): bool
+    {
+        return false !== strpos($value, '/');
+    }
+
+    /**
+     * Test if a value is within a range.
+     *
+     * @internal
+     * @param int $dateValue Set date value
+     * @param string $value Value to test
+     *
+     * @return bool
+     */
+    public function isInRange(int $dateValue, $value): bool
+    {
+        $parts = array_map(
+            function ($value) {
+                $value = trim($value);
+
+                return $this->convertLiterals($value);
+            },
+            explode('-', $value, 2)
+        );
+
+        return $dateValue >= $parts[0] && $dateValue <= $parts[1];
+    }
+
+    /**
+     * Test if a value is within an increments of ranges (offset[-to]/step size).
+     *
+     * @internal
+     * @param int $dateValue Set date value
+     * @param string $value Value to test
+     *
+     * @return bool
+     */
+    public function isInIncrementsOfRanges(int $dateValue, string $value): bool
+    {
+        $chunks = array_map('trim', explode('/', $value, 2));
+        $range = $chunks[0];
+        $step = $chunks[1] ?? 0;
+
+        // No step or 0 steps aren't cool
+        /** @phpstan-ignore-next-line */
+        if (null === $step || '0' === $step || 0 === $step) {
+            return false;
+        }
+
+        // Expand the * to a full range
+        if ('*' === $range) {
+            $range = $this->rangeStart . '-' . $this->rangeEnd;
+        }
+
+        // Generate the requested small range
+        $rangeChunks = explode('-', $range, 2);
+        $rangeStart = (int) $rangeChunks[0];
+        $rangeEnd = $rangeChunks[1] ?? $rangeStart;
+        $rangeEnd = (int) $rangeEnd;
+
+        if ($rangeStart < $this->rangeStart || $rangeStart > $this->rangeEnd || $rangeStart > $rangeEnd) {
+            throw new \OutOfRangeException('Invalid range start requested');
+        }
+
+        if ($rangeEnd < $this->rangeStart || $rangeEnd > $this->rangeEnd || $rangeEnd < $rangeStart) {
+            throw new \OutOfRangeException('Invalid range end requested');
+        }
+
+        // Steps larger than the range need to wrap around and be handled
+        // slightly differently than smaller steps
+
+        // UPDATE - This is actually false. The C implementation will allow a
+        // larger step as valid syntax, it never wraps around. It will stop
+        // once it hits the end. Unfortunately this means in future versions
+        // we will not wrap around. However, because the logic exists today
+        // per the above documentation, fixing the bug from #89
+        if ($step > $this->rangeEnd) {
+            $thisRange = [$this->fullRange[$step % \count($this->fullRange)]];
+        } else {
+            if ($step > ($rangeEnd - $rangeStart)) {
+                $thisRange[$rangeStart] = (int) $rangeStart;
+            } else {
+                $thisRange = range($rangeStart, $rangeEnd, (int) $step);
+            }
+        }
+
+        return \in_array($dateValue, $thisRange, true);
+    }
+
+    /**
+     * Returns a range of values for the given cron expression.
+     *
+     * @param string $expression The expression to evaluate
+     * @param int $max Maximum offset for range
+     *
+     * @return array
+     */
+    public function getRangeForExpression(string $expression, int $max): array
+    {
+        $values = [];
+        $expression = $this->convertLiterals($expression);
+
+        if (false !== strpos($expression, ',')) {
+            $ranges = explode(',', $expression);
+            $values = [];
+            foreach ($ranges as $range) {
+                $expanded = $this->getRangeForExpression($range, $this->rangeEnd);
+                $values = array_merge($values, $expanded);
+            }
+
+            return $values;
+        }
+
+        if ($this->isRange($expression) || $this->isIncrementsOfRanges($expression)) {
+            if (!$this->isIncrementsOfRanges($expression)) {
+                [$offset, $to] = explode('-', $expression);
+                $offset = $this->convertLiterals($offset);
+                $to = $this->convertLiterals($to);
+                $stepSize = 1;
+            } else {
+                $range = array_map('trim', explode('/', $expression, 2));
+                $stepSize = $range[1] ?? 0;
+                $range = $range[0];
+                $range = explode('-', $range, 2);
+                $offset = $range[0];
+                $to = $range[1] ?? $max;
+            }
+            $offset = '*' === $offset ? $this->rangeStart : $offset;
+            if ($stepSize >= $this->rangeEnd) {
+                $values = [$this->fullRange[$stepSize % \count($this->fullRange)]];
+            } else {
+                for ($i = $offset; $i <= $to; $i += $stepSize) {
+                    $values[] = (int) $i;
+                }
+            }
+            sort($values);
+        } else {
+            $values = [$expression];
+        }
+
+        return $values;
+    }
+
+    /**
+     * Convert literal.
+     *
+     * @param string $value
+     *
+     * @return string
+     */
+    protected function convertLiterals(string $value): string
+    {
+        if (\count($this->literals)) {
+            $key = array_search(strtoupper($value), $this->literals, true);
+            if (false !== $key) {
+                return (string) $key;
+            }
+        }
+
+        return $value;
+    }
+
+    /**
+     * Checks to see if a value is valid for the field.
+     *
+     * @param string $value
+     *
+     * @return bool
+     */
+    public function validate(string $value): bool
+    {
+        $value = $this->convertLiterals($value);
+
+        // All fields allow * as a valid value
+        if ('*' === $value) {
+            return true;
+        }
+
+        // Validate each chunk of a list individually
+        if (false !== strpos($value, ',')) {
+            foreach (explode(',', $value) as $listItem) {
+                if (!$this->validate($listItem)) {
+                    return false;
+                }
+            }
+
+            return true;
+        }
+
+        if (false !== strpos($value, '/')) {
+            [$range, $step] = explode('/', $value);
+
+            // Don't allow numeric ranges
+            if (is_numeric($range)) {
+                return false;
+            }
+
+            return $this->validate($range) && filter_var($step, FILTER_VALIDATE_INT);
+        }
+
+        if (false !== strpos($value, '-')) {
+            if (substr_count($value, '-') > 1) {
+                return false;
+            }
+
+            $chunks = explode('-', $value);
+            $chunks[0] = $this->convertLiterals($chunks[0]);
+            $chunks[1] = $this->convertLiterals($chunks[1]);
+
+            if ('*' === $chunks[0] || '*' === $chunks[1]) {
+                return false;
+            }
+
+            return $this->validate($chunks[0]) && $this->validate($chunks[1]);
+        }
+
+        if (!is_numeric($value)) {
+            return false;
+        }
+
+        if (false !== strpos($value, '.')) {
+            return false;
+        }
+
+        // We should have a numeric by now, so coerce this into an integer
+        $value = (int) $value;
+
+        return \in_array($value, $this->fullRange, true);
+    }
+
+    protected function timezoneSafeModify(DateTimeInterface $dt, string $modification): DateTimeInterface
+    {
+        $timezone = $dt->getTimezone();
+        $dt = $dt->setTimezone(new \DateTimeZone("UTC"));
+        $dt = $dt->modify($modification);
+        $dt = $dt->setTimezone($timezone);
+        return $dt;
+    }
+
+    protected function setTimeHour(DateTimeInterface $date, bool $invert, int $originalTimestamp): DateTimeInterface
+    {
+        $date = $date->setTime((int)$date->format('H'), ($invert ? 59 : 0));
+
+        // setTime caused the offset to change, moving time in the wrong direction
+        $actualTimestamp = $date->format('U');
+        if ((! $invert) && ($actualTimestamp <= $originalTimestamp)) {
+            $date = $this->timezoneSafeModify($date, "+1 hour");
+        } elseif ($invert && ($actualTimestamp >= $originalTimestamp)) {
+            $date = $this->timezoneSafeModify($date, "-1 hour");
+        }
+
+        return $date;
+    }
+}