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Writer.php
<?php /** * League.Csv (https://csv.thephpleague.com) * * (c) Ignace Nyamagana Butera <nyamsprod@gmail.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ declare(strict_types=1); namespace League\Csv; use function array_map; use function array_reduce; use function implode; use function restore_error_handler; use function set_error_handler; use function str_replace; use const STREAM_FILTER_WRITE; /** * A class to insert records into a CSV Document. */ class Writer extends AbstractCsv implements TabularDataWriter { protected const STREAM_FILTER_MODE = STREAM_FILTER_WRITE; /** @var array<callable> callable collection to format the record before insertion. */ protected array $formatters = []; /** @var array<callable> callable collection to validate the record before insertion. */ protected array $validators = []; protected string $newline = "\n"; protected int $flush_counter = 0; protected ?int $flush_threshold = null; protected bool $enclose_all = false; /** @var array{0:array<string>,1:array<string>} */ protected array $enclosure_replace; protected function resetProperties(): void { parent::resetProperties(); $this->enclosure_replace = [ [$this->enclosure, $this->escape.$this->enclosure.$this->enclosure], [$this->enclosure.$this->enclosure, $this->escape.$this->enclosure], ]; } /** * Returns the current end of line sequence characters. */ public function getEndOfLine(): string { return $this->newline; } /** * Returns the flush threshold. */ public function getFlushThreshold(): ?int { return $this->flush_threshold; } /** * Tells whether new entries will all be enclosed on writing. */ public function encloseAll(): bool { return $this->enclose_all; } /** * Adds multiple records to the CSV document. * @see Writer::insertOne * * @throws CannotInsertRecord * @throws Exception */ public function insertAll(iterable $records): int { $bytes = 0; foreach ($records as $record) { $bytes += $this->insertOne($record); } $this->flush_counter = 0; $this->document->fflush(); return $bytes; } /** * Adds a single record to a CSV document. * * A record is an array that can contain scalar type values, NULL values * or objects implementing the __toString method. * * @throws CannotInsertRecord If the record can not be inserted * @throws Exception If the record can not be inserted */ public function insertOne(array $record): int { $insert = fn (array $record): int|false => match (true) { $this->enclose_all => $this->document->fwrite(implode( $this->delimiter, array_map( fn ($content) => $this->enclosure.$content.$this->enclosure, str_replace($this->enclosure_replace[0], $this->enclosure_replace[1], $record) ) ).$this->newline), default => $this->document->fputcsv($record, $this->delimiter, $this->enclosure, $this->escape, $this->newline), }; $record = array_reduce($this->formatters, fn (array $record, callable $formatter): array => $formatter($record), $record); $this->validateRecord($record); set_error_handler(fn (int $errno, string $errstr, string $errfile, int $errline) => true); $bytes = $insert($record); restore_error_handler(); if (false === $bytes) { throw CannotInsertRecord::triggerOnInsertion($record); } if (null === $this->flush_threshold) { return $bytes; } ++$this->flush_counter; if (0 === $this->flush_counter % $this->flush_threshold) { $this->flush_counter = 0; $this->document->fflush(); } return $bytes; } /** * Validates a record. * * @throws CannotInsertRecord If the validation failed */ protected function validateRecord(array $record): void { foreach ($this->validators as $name => $validator) { if (true !== $validator($record)) { throw CannotInsertRecord::triggerOnValidation($name, $record); } } } /** * Adds a record formatter. */ public function addFormatter(callable $formatter): self { $this->formatters[] = $formatter; return $this; } /** * Adds a record validator. */ public function addValidator(callable $validator, string $validator_name): self { $this->validators[$validator_name] = $validator; return $this; } /** * Sets the end of line sequence. */ public function setEndOfLine(string $endOfLine): self { $this->newline = $endOfLine; return $this; } /** * Sets the flush threshold. * * @throws InvalidArgument if the threshold is a integer less than 1 */ public function setFlushThreshold(?int $threshold): self { if ($threshold === $this->flush_threshold) { return $this; } if (null !== $threshold && 1 > $threshold) { throw InvalidArgument::dueToInvalidThreshold($threshold, __METHOD__); } $this->flush_threshold = $threshold; $this->flush_counter = 0; $this->document->fflush(); return $this; } public function relaxEnclosure(): self { $this->enclose_all = false; return $this; } public function forceEnclosure(): self { $this->enclose_all = true; return $this; } /** * DEPRECATION WARNING! This method will be removed in the next major point release. * * @deprecated since version 9.8.0 * @codeCoverageIgnore * * Format a record. * * The returned array must contain * - scalar types values, * - NULL values, * - or objects implementing the __toString() method. */ protected function formatRecord(array $record, callable $formatter): array { return $formatter($record); } /** * DEPRECATION WARNING! This method will be removed in the next major point release. * * @deprecated Since version 9.9.0 * @codeCoverageIgnore * * Adds a single record to a CSV Document using PHP algorithm. * * @see https://php.net/manual/en/function.fputcsv.php */ protected function addRecord(array $record): int|false { return $this->document->fputcsv($record, $this->delimiter, $this->enclosure, $this->escape, $this->newline); } /** * DEPRECATION WARNING! This method will be removed in the next major point release. * * @deprecated Since version 9.9.0 * @codeCoverageIgnore * * Applies post insertion actions. */ protected function consolidate(): int { if (null === $this->flush_threshold) { return 0; } ++$this->flush_counter; if (0 === $this->flush_counter % $this->flush_threshold) { $this->flush_counter = 0; $this->document->fflush(); } return 0; } /** * DEPRECATION WARNING! This method will be removed in the next major point release. * * @see Writer::getEndOfLine() * @deprecated Since version 9.10.0 * @codeCoverageIgnore * * Returns the current newline sequence characters. */ public function getNewline(): string { return $this->getEndOfLine(); } /** * DEPRECATION WARNING! This method will be removed in the next major point release. * * @see Writer::setEndOfLine() * @deprecated Since version 9.10.0 * @codeCoverageIgnore * * Sets the newline sequence. */ public function setNewline(string $newline): self { return $this->setEndOfLine($newline); } }