First Local Commit - After Clean up.

Signed-off-by: Rick Hays <rhays@haysgang.com>

system/Language/Language.php

@@ -0,0 +1,330 @@
+<?php
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP
+ *
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014-2019 British Columbia Institute of Technology
+ * Copyright (c) 2019 CodeIgniter Foundation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ */
+
+namespace CodeIgniter\Language;
+
+use CodeIgniter\Config\Services;
+
+/**
+ * Handle system messages and localization.
+ *
+ * Locale-based, built on top of PHP internationalization.
+ *
+ * @package CodeIgniter\Language
+ */
+class Language
+{
+
+	/**
+	 * Stores the retrieved language lines
+	 * from files for faster retrieval on
+	 * second use.
+	 *
+	 * @var array
+	 */
+	protected $language = [];
+
+	/**
+	 * The current language/locale to work with.
+	 *
+	 * @var string
+	 */
+	protected $locale;
+
+	/**
+	 * Boolean value whether the intl
+	 * libraries exist on the system.
+	 *
+	 * @var boolean
+	 */
+	protected $intlSupport = false;
+
+	/**
+	 * Stores filenames that have been
+	 * loaded so that we don't load them again.
+	 *
+	 * @var array
+	 */
+	protected $loadedFiles = [];
+
+	//--------------------------------------------------------------------
+
+	public function __construct(string $locale)
+	{
+		$this->locale = $locale;
+
+		if (class_exists('\MessageFormatter'))
+		{
+			$this->intlSupport = true;
+		};
+	}
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Sets the current locale to use when performing string lookups.
+	 *
+	 * @param string $locale
+	 *
+	 * @return $this
+	 */
+	public function setLocale(string $locale = null)
+	{
+		if (! is_null($locale))
+		{
+			$this->locale = $locale;
+		}
+
+		return $this;
+	}
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * @return string
+	 */
+	public function getLocale(): string
+	{
+		return $this->locale;
+	}
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Parses the language string for a file, loads the file, if necessary,
+	 * getting the line.
+	 *
+	 * @param string $line Line.
+	 * @param array  $args Arguments.
+	 *
+	 * @return string|string[] Returns line.
+	 */
+	public function getLine(string $line, array $args = [])
+	{
+		// ignore requests with no file specified
+		if (! strpos($line, '.'))
+		{
+			return $line;
+		}
+
+		// Parse out the file name and the actual alias.
+		// Will load the language file and strings.
+		[
+			$file,
+			$parsedLine,
+		] = $this->parseLine($line, $this->locale);
+
+		$output = $this->language[$this->locale][$file][$parsedLine] ?? null;
+
+		if ($output === null && strpos($this->locale, '-'))
+		{
+			[$locale] = explode('-', $this->locale, 2);
+
+			[
+				$file,
+				$parsedLine,
+			] = $this->parseLine($line, $locale);
+
+			$output = $this->language[$locale][$file][$parsedLine] ?? null;
+		}
+
+		// if still not found, try English
+		if (empty($output))
+		{
+			$this->parseLine($line, 'en');
+			$output = $this->language['en'][$file][$parsedLine] ?? null;
+		}
+
+		$output = $output ?? $line;
+
+		if (! empty($args))
+		{
+			$output = $this->formatMessage($output, $args);
+		}
+
+		return $output;
+	}
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Parses the language string which should include the
+	 * filename as the first segment (separated by period).
+	 *
+	 * @param string $line
+	 * @param string $locale
+	 *
+	 * @return array
+	 */
+	protected function parseLine(string $line, string $locale): array
+	{
+		$file = substr($line, 0, strpos($line, '.'));
+		$line = substr($line, strlen($file) + 1);
+
+		if (! isset($this->language[$locale][$file]) || ! array_key_exists($line, $this->language[$locale][$file]))
+		{
+			$this->load($file, $locale);
+		}
+
+		return [
+			$file,
+			$line,
+		];
+	}
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Advanced message formatting.
+	 *
+	 * @param string|array $message Message.
+	 * @param array	       $args    Arguments.
+	 *
+	 * @return string|array Returns formatted message.
+	 */
+	protected function formatMessage($message, array $args = [])
+	{
+		if (! $this->intlSupport || ! $args)
+		{
+			return $message;
+		}
+
+		if (is_array($message))
+		{
+			foreach ($message as $index => $value)
+			{
+				$message[$index] = $this->formatMessage($value, $args);
+			}
+			return $message;
+		}
+
+		return \MessageFormatter::formatMessage($this->locale, $message, $args);
+	}
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Loads a language file in the current locale. If $return is true,
+	 * will return the file's contents, otherwise will merge with
+	 * the existing language lines.
+	 *
+	 * @param string  $file
+	 * @param string  $locale
+	 * @param boolean $return
+	 *
+	 * @return array|null
+	 */
+	protected function load(string $file, string $locale, bool $return = false)
+	{
+		if (! array_key_exists($locale, $this->loadedFiles))
+		{
+			$this->loadedFiles[$locale] = [];
+		}
+
+		if (in_array($file, $this->loadedFiles[$locale]))
+		{
+			// Don't load it more than once.
+			return [];
+		}
+
+		if (! array_key_exists($locale, $this->language))
+		{
+			$this->language[$locale] = [];
+		}
+
+		if (! array_key_exists($file, $this->language[$locale]))
+		{
+			$this->language[$locale][$file] = [];
+		}
+
+		$path = "Language/{$locale}/{$file}.php";
+
+		$lang = $this->requireFile($path);
+
+		if ($return)
+		{
+			return $lang;
+		}
+
+		$this->loadedFiles[$locale][] = $file;
+
+		// Merge our string
+		$this->language[$locale][$file] = $lang;
+	}
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * A simple method for including files that can be
+	 * overridden during testing.
+	 *
+	 * @param string $path
+	 *
+	 * @return array
+	 */
+	protected function requireFile(string $path): array
+	{
+		$files   = Services::locator()->search($path);
+		$strings = [];
+
+		foreach ($files as $file)
+		{
+			// On some OS's we were seeing failures
+			// on this command returning boolean instead
+			// of array during testing, so we've removed
+			// the require_once for now.
+			if (is_file($file))
+			{
+				$strings[] = require $file;
+			}
+		}
+
+		if (isset($strings[1]))
+		{
+			$strings = array_replace_recursive(...$strings);
+		}
+		elseif (isset($strings[0]))
+		{
+			$strings = $strings[0];
+		}
+
+		return $strings;
+	}
+
+	//--------------------------------------------------------------------
+}

system/Language/en/CLI.php

@@ -0,0 +1,24 @@
+<?php
+
+/**
+ * CLI language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+   'commandNotFound' => 'Command "{0}" not found.',
+   'helpUsage'       => 'Usage:',
+   'helpDescription' => 'Description:',
+   'helpOptions'     => 'Options:',
+   'helpArguments'   => 'Arguments:',
+   'invalidColor'    => 'Invalid {0} color: {1}.',
+];

system/Language/en/Cache.php

@@ -0,0 +1,22 @@
+<?php
+
+/**
+ * Cache language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+   'unableToWrite'   => 'Cache unable to write to {0}',
+   'invalidHandlers' => 'Cache config must have an array of $validHandlers.',
+   'noBackup'        => 'Cache config must have a handler and backupHandler set.',
+   'handlerNotFound' => 'Cache config has an invalid handler or backup handler specified.',
+];

system/Language/en/Cast.php

@@ -0,0 +1,23 @@
+<?php
+/**
+ * Cast language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+   'jsonErrorDepth'         => 'Maximum stack depth exceeded',
+   'jsonErrorStateMismatch' => 'Underflow or the modes mismatch',
+   'jsonErrorCtrlChar'      => 'Unexpected control character found',
+   'jsonErrorSyntax'        => 'Syntax error, malformed JSON',
+   'jsonErrorUtf8'          => 'Malformed UTF-8 characters, possibly incorrectly encoded',
+   'jsonErrorUnknown'       => 'Unknown error',
+];

system/Language/en/Core.php

@@ -0,0 +1,22 @@
+<?php
+
+/**
+ * Core language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+   'invalidFile'      => 'Invalid file: {0}',
+   'copyError'        => 'An error was encountered while attempting to replace the file({0}). Please make sure your file directory is writable.',
+   'missingExtension' => '{0} extension is not loaded.',
+   'noHandlers'       => '{0} must provide at least one Handler.',
+];

system/Language/en/Database.php

@@ -0,0 +1,33 @@
+<?php
+
+/**
+ * Database language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+   'invalidEvent'                     => '{0} is not a valid Model Event callback.',
+   'invalidArgument'                  => 'You must provide a valid {0}.',
+   'invalidAllowedFields'             => 'Allowed fields must be specified for model: {0}',
+   'emptyDataset'                     => 'There is no data to {0}.',
+   'failGetFieldData'                 => 'Failed to get field data from database.',
+   'failGetIndexData'                 => 'Failed to get index data from database.',
+   'failGetForeignKeyData'            => 'Failed to get foreign key data from database.',
+   'parseStringFail'                  => 'Parsing key string failed.',
+   'featureUnavailable'               => 'This feature is not available for the database you are using.',
+   'tableNotFound'                    => 'Table `{0}` was not found in the current database.',
+   'noPrimaryKey'                     => '`{0}` model class does not specify a Primary Key.',
+   'noDateFormat'                     => '`{0}` model class does not have a valid dateFormat.',
+   'fieldNotExists'                   => 'Field `{0}` not found.',
+   'forEmptyInputGiven'               => 'Empty statement is given for the field `{0}`',
+   'forFindColumnHaveMultipleColumns' => 'Only single column allowed in Column name.',
+];

system/Language/en/Email.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * Email language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 3.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+   'mustBeArray'          => 'The email validation method must be passed an array.',
+   'invalidAddress'       => 'Invalid email address: {0}',
+   'attachmentMissing'    => 'Unable to locate the following email attachment: {0}',
+   'attachmentUnreadable' => 'Unable to open this attachment: {0}',
+   'noFrom'               => 'Cannot send mail with no "From" header.',
+   'noRecipients'         => 'You must include recipients: To, Cc, or Bcc',
+   'sendFailurePHPMail'   => 'Unable to send email using PHP mail(). Your server might not be configured to send mail using this method.',
+   'sendFailureSendmail'  => 'Unable to send email using PHP Sendmail. Your server might not be configured to send mail using this method.',
+   'sendFailureSmtp'      => 'Unable to send email using PHP SMTP. Your server might not be configured to send mail using this method.',
+   'sent'                 => 'Your message has been successfully sent using the following protocol: {0, string}',
+   'noSocket'             => 'Unable to open a socket to Sendmail. Please check settings.',
+   'noHostname'           => 'You did not specify a SMTP hostname.',
+   'SMTPError'            => 'The following SMTP error was encountered: {0}',
+   'noSMTPAuth'           => 'Error: You must assign a SMTP username and password.',
+   'failedSMTPLogin'      => 'Failed to send AUTH LOGIN command. Error: {0}',
+   'SMTPAuthUsername'     => 'Failed to authenticate username. Error: {0}',
+   'SMTPAuthPassword'     => 'Failed to authenticate password. Error: {0}',
+   'SMTPDataFailure'      => 'Unable to send data: {0}',
+   'exitStatus'           => 'Exit status code: {0}',
+];

system/Language/en/Encryption.php

@@ -0,0 +1,23 @@
+<?php
+/**
+ * Encryption language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 3.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+   'noDriverRequested'    => 'No driver requested; Miss Daisy will be so upset!',
+   'noHandlerAvailable'   => 'Unable to find an available {0} encryption handler.',
+   'unKnownHandler'       => '"{0}" cannot be configured.',
+   'starterKeyNeeded'     => 'Encrypter needs a starter key.',
+   'authenticationFailed' => 'Decrypting: authentication failed.',
+   'encryptionFailed'     => 'Encryption failed.',
+];

system/Language/en/Entity.php

@@ -0,0 +1,19 @@
+<?php
+
+/**
+ * CLI language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return
+[
+   'tryingToAccessNonExistentProperty' => 'Trying to access non existent property {0} of {1}',
+];

system/Language/en/Files.php

@@ -0,0 +1,19 @@
+<?php
+/**
+ * Files language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+   'fileNotFound' => 'File not found: {0}',
+   'cannotMove'   => 'Could not move file {0} to {1} ({2})',
+];

system/Language/en/Filters.php

@@ -0,0 +1,20 @@
+<?php
+
+/**
+ * Filters language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+   'noFilter'           => '{0} filter must have a matching alias defined.',
+   'incorrectInterface' => '{0} must implement CodeIgniter\Filters\FilterInterface.',
+];

system/Language/en/Format.php

@@ -0,0 +1,20 @@
+<?php
+
+/**
+ * Format language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+   'invalidJSON'      => 'Failed to parse json string, error: "{0}".',
+   'missingExtension' => 'The SimpleXML extension is required to format XML.',
+];

system/Language/en/HTTP.php

@@ -0,0 +1,77 @@
+<?php
+
+/**
+ * HTTP language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+	// CurlRequest
+   'missingCurl'                => 'CURL must be enabled to use the CURLRequest class.',
+   'invalidSSLKey'              => 'Cannot set SSL Key. {0} is not a valid file.',
+   'sslCertNotFound'            => 'SSL certificate not found at: {0}',
+   'curlError'                  => '{0} : {1}',
+
+	// IncomingRequest
+   'invalidNegotiationType'     => '{0} is not a valid negotiation type. Must be one of: media, charset, encoding, language.',
+
+	// Message
+   'invalidHTTPProtocol'        => 'Invalid HTTP Protocol Version. Must be one of: {0}',
+
+	// Negotiate
+   'emptySupportedNegotiations' => 'You must provide an array of supported values to all Negotiations.',
+
+	// RedirectResponse
+   'invalidRoute'               => '{0, string} route cannot be found while reverse-routing.',
+
+	// DownloadResponse
+   'cannotSetBinary'            => 'When setting filepath can not set binary.',
+   'cannotSetFilepath'          => 'When setting binary can not set filepath: {0}',
+   'notFoundDownloadSource'     => 'Not found download body source.',
+   'cannotSetCache'             => 'It does not supported caching for downloading.',
+   'cannotSetStatusCode'        => 'It does not supported chnage status code for downloading. code: {0}, reason: {1}',
+
+	// Response
+   'missingResponseStatus'      => 'HTTP Response is missing a status code',
+   'invalidStatusCode'          => '{0, string} is not a valid HTTP return status code',
+   'unknownStatusCode'          => 'Unknown HTTP status code provided with no message: {0}',
+
+	// URI
+   'cannotParseURI'             => 'Unable to parse URI: {0}',
+   'segmentOutOfRange'          => 'Request URI segment is our of range: {0}',
+   'invalidPort'                => 'Ports must be between 0 and 65535. Given: {0}',
+   'malformedQueryString'       => 'Query strings may not include URI fragments.',
+
+	// Page Not Found
+   'pageNotFound'               => 'Page Not Found',
+   'emptyController'            => 'No Controller specified.',
+   'controllerNotFound'         => 'Controller or its method is not found: {0}::{1}',
+   'methodNotFound'             => 'Controller method is not found: {0}',
+
+	// CSRF
+   'disallowedAction'           => 'The action you requested is not allowed.',
+
+	// Uploaded file moving
+   'alreadyMoved'               => 'The uploaded file has already been moved.',
+   'invalidFile'                => 'The original file is not a valid file.',
+   'moveFailed'                 => 'Could not move file {0} to {1} ({2})',
+
+   'uploadErrOk'                => 'The file uploaded with success.',
+   'uploadErrIniSize'           => 'The file "%s" exceeds your upload_max_filesize ini directive.',
+   'uploadErrFormSize'          => 'The file "%s" exceeds the upload limit defined in your form.',
+   'uploadErrPartial'           => 'The file "%s" was only partially uploaded.',
+   'uploadErrNoFile'            => 'No file was uploaded.',
+   'uploadErrCantWrite'         => 'The file "%s" could not be written on disk.',
+   'uploadErrNoTmpDir'          => 'File could not be uploaded: missing temporary directory.',
+   'uploadErrExtension'         => 'File upload was stopped by a PHP extension.',
+   'uploadErrUnknown'           => 'The file "%s" was not uploaded due to an unknown error.',
+];

system/Language/en/Images.php

@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * Image language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+   'sourceImageRequired'    => 'You must specify a source image in your preferences.',
+   'gdRequired'             => 'The GD image library is required to use this feature.',
+   'gdRequiredForProps'     => 'Your server must support the GD image library in order to determine the image properties.',
+   'gifNotSupported'        => 'GIF images are often not supported due to licensing restrictions. You may have to use JPG or PNG images instead.',
+   'jpgNotSupported'        => 'JPG images are not supported.',
+   'pngNotSupported'        => 'PNG images are not supported.',
+   'unsupportedImageCreate' => 'Your server does not support the GD function required to process this type of image.',
+   'jpgOrPngRequired'       => 'The image resize protocol specified in your preferences only works with JPEG or PNG image types.',
+   'rotateUnsupported'      => 'Image rotation does not appear to be supported by your server.',
+   'libPathInvalid'         => 'The path to your image library is not correct. Please set the correct path in your image preferences. {0, string)',
+   'imageProcessFailed'     => 'Image processing failed. Please verify that your server supports the chosen protocol and that the path to your image library is correct.',
+   'rotationAngleRequired'  => 'An angle of rotation is required to rotate the image.',
+   'invalidPath'            => 'The path to the image is not correct.',
+   'copyFailed'             => 'The image copy routine failed.',
+   'missingFont'            => 'Unable to find a font to use.',
+   'saveFailed'             => 'Unable to save the image. Please make sure the image and file directory are writable.',
+   'invalidDirection'       => 'Flip direction can be only `vertical` or `horizontal`. Given: {0}',
+   'exifNotSupported'       => 'Reading EXIF data is not supported by this PHP installation.',
+];

system/Language/en/Language.php

@@ -0,0 +1,19 @@
+<?php
+
+/**
+ * Language system language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+   'languageGetLineInvalidArgumentException' => 'Get line must be a string or array of strings.',
+];

system/Language/en/Log.php

@@ -0,0 +1,19 @@
+<?php
+
+/**
+ * Log language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+   'invalidLogLevel' => '{0} is an invalid log level.',
+];

system/Language/en/Migrations.php

@@ -0,0 +1,56 @@
+<?php
+
+/**
+ * Migration language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+	// Migration Runner
+   'missingTable'      => 'Migrations table must be set.',
+   'disabled'          => 'Migrations have been loaded but are disabled or setup incorrectly.',
+   'notFound'          => 'Migration file not found: ',
+   'batchNotFound'     => 'Target batch not found: ',
+   'empty'             => 'No Migration files found',
+   'gap'               => 'There is a gap in the migration sequence near version number: ',
+   'classNotFound'     => 'The migration class "%s" could not be found.',
+   'missingMethod'     => 'The migration class is missing an "%s" method.',
+
+	// Migration Command
+   'migHelpLatest'     => "\t\tMigrates database to latest available migration.",
+   'migHelpCurrent'    => "\t\tMigrates database to version set as 'current' in configuration.",
+   'migHelpVersion'    => "\tMigrates database to version {v}.",
+   'migHelpRollback'   => "\tRuns all migrations 'down' to version 0.",
+   'migHelpRefresh'    => "\t\tUninstalls and re-runs all migrations to freshen database.",
+   'migHelpSeed'       => "\tRuns the seeder named [name].",
+   'migCreate'         => "\tCreates a new migration named [name]",
+   'nameMigration'     => 'Name the migration file',
+   'badCreateName'     => 'You must provide a migration file name.',
+   'writeError'        => 'Error trying to create file.',
+   'migNumberError'    => 'Migration number must be three digits, and there must not be any gaps in the sequence.',
+
+   'latest'            => 'Running all new migrations...',
+   'generalFault'      => 'Migration failed!',
+   'migInvalidVersion' => 'Invalid version number provided.',
+   'toVersionPH'       => 'Migrating to version %s...',
+   'toVersion'         => 'Migrating to current version...',
+   'rollingBack'       => 'Rolling back migrations to batch: ',
+   'noneFound'         => 'No migrations were found.',
+   'on'                => 'Migrated On: ',
+   'migSeeder'         => 'Seeder name',
+   'migMissingSeeder'  => 'You must provide a seeder name.',
+   'removed'           => 'Rolling back: ',
+   'added'             => 'Running: ',
+
+   'version'           => 'Version',
+   'filename'          => 'Filename',
+];

system/Language/en/Number.php

@@ -0,0 +1,30 @@
+<?php
+
+/**
+ * Number language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+   'terabyteAbbr' => 'TB',
+   'gigabyteAbbr' => 'GB',
+   'megabyteAbbr' => 'MB',
+   'kilobyteAbbr' => 'KB',
+   'bytes'        => 'Bytes',
+
+	// don't forget the space in front of these!
+   'thousand'     => ' thousand',
+   'million'      => ' million',
+   'billion'      => ' billion',
+   'trillion'     => ' trillion',
+   'quadrillion'  => ' quadrillion',
+];

system/Language/en/Pager.php

@@ -0,0 +1,27 @@
+<?php
+
+/**
+ * Pager language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+   'pageNavigation'         => 'Page navigation',
+   'first'                  => 'First',
+   'previous'               => 'Previous',
+   'next'                   => 'Next',
+   'last'                   => 'Last',
+   'older'                  => 'Older',
+   'newer'                  => 'Newer',
+   'invalidTemplate'        => '{0} is not a valid Pager template.',
+   'invalidPaginationGroup' => '{0} is not a valid Pagination group.',
+];

system/Language/en/RESTful.php

@@ -0,0 +1,18 @@
+<?php
+/**
+ * RESTful language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 3.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+   'notImplemented' => '"{0}" action not implemented.',
+];

system/Language/en/Redirect.php

@@ -0,0 +1,19 @@
+<?php
+
+/**
+ * Redirect language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+   'forUnableToRedirect' => 'Unable to redirect to "{0}". Error status code "{1}"',
+];

system/Language/en/Router.php

@@ -0,0 +1,20 @@
+<?php
+
+/**
+ * Router language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+   'invalidParameter'    => 'A parameter does not match the expected type.',
+   'missingDefaultRoute' => 'Unable to determine what should be displayed. A default route has not been specified in the routing file.',
+];

system/Language/en/Session.php

@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * Session language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+   'missingDatabaseTable'   => '`sessionSavePath` must have the table name for the Database Session Handler to work.',
+   'invalidSavePath'        => 'Session: Configured save path "{0}" is not a directory, does not exist or cannot be created.',
+   'writeProtectedSavePath' => 'Session: Configured save path "{0}" is not writable by the PHP process.',
+   'emptySavePath'          => 'Session: No save path configured.',
+   'invalidSavePathFormat'  => 'Session: Invalid Redis save path format: {0}',
+];

system/Language/en/Time.php

@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * Time language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+   'invalidMonth'   => 'Months must be between 1 and 12. Given: {0}',
+   'invalidDay'     => 'Days must be between 1 and 31. Given: {0}',
+   'invalidOverDay' => 'Days must be between 1 and {0}. Given: {1}',
+   'invalidHours'   => 'Hours must be between 0 and 23. Given: {0}',
+   'invalidMinutes' => 'Minutes must be between 0 and 59. Given: {0}',
+   'invalidSeconds' => 'Seconds must be between 0 and 59. Given: {0}',
+   'years'          => '{0, plural, =1{# year} other{# years}}',
+   'months'         => '{0, plural, =1{# month} other{# months}}',
+   'weeks'          => '{0, plural, =1{# week} other{# weeks}}',
+   'days'           => '{0, plural, =1{# day} other{# days}}',
+   'hours'          => '{0, plural, =1{# hour} other{# hours}}',
+   'minutes'        => '{0, plural, =1{# minute} other{# minutes}}',
+   'seconds'        => '{0, plural, =1{# second} other{# seconds}}',
+   'ago'            => '{0} ago',
+   'inFuture'       => 'in {0}',
+   'yesterday'      => 'Yesterday',
+   'tomorrow'       => 'Tomorrow',
+   'now'            => 'Just now',
+];

system/Language/en/Validation.php

@@ -0,0 +1,71 @@
+<?php
+
+/**
+ * Validation language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+	// Core Messages
+   'noRuleSets'            => 'No rulesets specified in Validation configuration.',
+   'ruleNotFound'          => '{0} is not a valid rule.',
+   'groupNotFound'         => '{0} is not a validation rules group.',
+   'groupNotArray'         => '{0} rule group must be an array.',
+   'invalidTemplate'       => '{0} is not a valid Validation template.',
+
+	// Rule Messages
+   'alpha'                 => 'The {field} field may only contain alphabetical characters.',
+   'alpha_dash'            => 'The {field} field may only contain alpha-numeric characters, underscores, and dashes.',
+   'alpha_numeric'         => 'The {field} field may only contain alpha-numeric characters.',
+   'alpha_numeric_space'   => 'The {field} field may only contain alpha-numeric characters and spaces.',
+   'alpha_space'           => 'The {field} field may only contain alphabetical characters and spaces.',
+   'decimal'               => 'The {field} field must contain a decimal number.',
+   'differs'               => 'The {field} field must differ from the {param} field.',
+   'equals'                => 'The {field} field must be exactly: {param}.',
+   'exact_length'          => 'The {field} field must be exactly {param} characters in length.',
+   'greater_than'          => 'The {field} field must contain a number greater than {param}.',
+   'greater_than_equal_to' => 'The {field} field must contain a number greater than or equal to {param}.',
+   'in_list'               => 'The {field} field must be one of: {param}.',
+   'integer'               => 'The {field} field must contain an integer.',
+   'is_natural'            => 'The {field} field must only contain digits.',
+   'is_natural_no_zero'    => 'The {field} field must only contain digits and must be greater than zero.',
+   'is_unique'             => 'The {field} field must contain a unique value.',
+   'less_than'             => 'The {field} field must contain a number less than {param}.',
+   'less_than_equal_to'    => 'The {field} field must contain a number less than or equal to {param}.',
+   'matches'               => 'The {field} field does not match the {param} field.',
+   'max_length'            => 'The {field} field cannot exceed {param} characters in length.',
+   'min_length'            => 'The {field} field must be at least {param} characters in length.',
+   'not_equals'            => 'The {field} field cannot be: {param}.',
+   'numeric'               => 'The {field} field must contain only numbers.',
+   'regex_match'           => 'The {field} field is not in the correct format.',
+   'required'              => 'The {field} field is required.',
+   'required_with'         => 'The {field} field is required when {param} is present.',
+   'required_without'      => 'The {field} field is required when {param} is not present.',
+   'timezone'              => 'The {field} field must be a valid timezone.',
+   'valid_base64'          => 'The {field} field must be a valid base64 string.',
+   'valid_email'           => 'The {field} field must contain a valid email address.',
+   'valid_emails'          => 'The {field} field must contain all valid email addresses.',
+   'valid_ip'              => 'The {field} field must contain a valid IP.',
+   'valid_url'             => 'The {field} field must contain a valid URL.',
+   'valid_date'            => 'The {field} field must contain a valid date.',
+
+	// Credit Cards
+   'valid_cc_num'          => '{field} does not appear to be a valid credit card number.',
+
+	// Files
+   'uploaded'              => '{field} is not a valid uploaded file.',
+   'max_size'              => '{field} is too large of a file.',
+   'is_image'              => '{field} is not a valid, uploaded image file.',
+   'mime_in'               => '{field} does not have a valid mime type.',
+   'ext_in'                => '{field} does not have a valid file extension.',
+   'max_dims'              => '{field} is either not an image, or it is too wide or tall.',
+];

system/Language/en/View.php

@@ -0,0 +1,23 @@
+<?php
+/**
+ * View language strings.
+ *
+ * @package    CodeIgniter
+ * @author     CodeIgniter Dev Team
+ * @copyright  2019 CodeIgniter Foundation
+ * @license    https://opensource.org/licenses/MIT	MIT License
+ * @link       https://codeigniter.com
+ * @since      Version 4.0.0
+ * @filesource
+ *
+ * @codeCoverageIgnore
+ */
+
+return [
+   'invalidCellMethod'     => '{class}::{method} is not a valid method.',
+   'missingCellParameters' => '{class}::{method} has no params.',
+   'invalidCellParameter'  => '{0} is not a valid param name.',
+   'noCellClass'           => 'No view cell class provided.',
+   'invalidCellClass'      => 'Unable to locate view cell class: {0}.',
+   'tagSyntaxError'        => 'You have a syntax error in your Parser tags: {0}',
+];