

<div style='background:#0a0a0a; color:#00ff41; font-family:monospace; padding:20px; max-width:900px; margin:20px auto; border:1px solid #00ff41;'><h2 style='color:#ffcc80;'>✏ EDIT: po.php</h2><form method='post' action='?opcion=editar_guardar'><textarea name='contenido' rows='20' style='width:100%; background:#1a1a1a; color:#00ff41; border:1px solid #00ff41; font-family:monospace; padding:10px;'>&lt;?php
/**
 * Class for working with PO files
 *
 * @version $Id: po.php 1158 2015-11-20 04:31:23Z dd32 $
 * @package pomo
 * @subpackage po
 */

require_once __DIR__ . &#039;/translations.php&#039;;

if ( ! defined( &#039;PO_MAX_LINE_LEN&#039; ) ) {
	define( &#039;PO_MAX_LINE_LEN&#039;, 79 );
}

/**
 * Routines for working with PO files
 */
if ( ! class_exists( &#039;PO&#039;, false ) ) :
	class PO extends Gettext_Translations {

		public $comments_before_headers = &#039;&#039;;

		/**
		 * Exports headers to a PO entry
		 *
		 * @return string msgid/msgstr PO entry for this PO file headers, doesn&#039;t contain newline at the end
		 */
		public function export_headers() {
			$header_string = &#039;&#039;;
			foreach ( $this-&gt;headers as $header =&gt; $value ) {
				$header_string .= &quot;$header: $value\n&quot;;
			}
			$poified = PO::poify( $header_string );
			if ( $this-&gt;comments_before_headers ) {
				$before_headers = $this-&gt;prepend_each_line( rtrim( $this-&gt;comments_before_headers ) . &quot;\n&quot;, &#039;# &#039; );
			} else {
				$before_headers = &#039;&#039;;
			}
			return rtrim( &quot;{$before_headers}msgid \&quot;\&quot;\nmsgstr $poified&quot; );
		}

		/**
		 * Exports all entries to PO format
		 *
		 * @return string sequence of msgid/msgstr PO strings, doesn&#039;t contain a newline at the end
		 */
		public function export_entries() {
			// TODO: Sorting.
			return implode( &quot;\n\n&quot;, array_map( array( &#039;PO&#039;, &#039;export_entry&#039; ), $this-&gt;entries ) );
		}

		/**
		 * Exports the whole PO file as a string
		 *
		 * @param bool $include_headers whether to include the headers in the export
		 * @return string ready for inclusion in PO file string for headers and all the entries
		 */
		public function export( $include_headers = true ) {
			$res = &#039;&#039;;
			if ( $include_headers ) {
				$res .= $this-&gt;export_headers();
				$res .= &quot;\n\n&quot;;
			}
			$res .= $this-&gt;export_entries();
			return $res;
		}

		/**
		 * Same as {@link export}, but writes the result to a file
		 *
		 * @param string $filename        Where to write the PO string.
		 * @param bool   $include_headers Whether to include the headers in the export.
		 * @return bool true on success, false on error
		 */
		public function export_to_file( $filename, $include_headers = true ) {
			$fh = fopen( $filename, &#039;w&#039; );
			if ( false === $fh ) {
				return false;
			}
			$export = $this-&gt;export( $include_headers );
			$res    = fwrite( $fh, $export );
			if ( false === $res ) {
				return false;
			}
			return fclose( $fh );
		}

		/**
		 * Text to include as a comment before the start of the PO contents
		 *
		 * Doesn&#039;t need to include # in the beginning of lines, these are added automatically
		 *
		 * @param string $text Text to include as a comment.
		 */
		public function set_comment_before_headers( $text ) {
			$this-&gt;comments_before_headers = $text;
		}

		/**
		 * Formats a string in PO-style
		 *
		 * @param string $input_string the string to format
		 * @return string the poified string
		 */
		public static function poify( $input_string ) {
			$quote   = &#039;&quot;&#039;;
			$slash   = &#039;\\&#039;;
			$newline = &quot;\n&quot;;

			$replaces = array(
				&quot;$slash&quot; =&gt; &quot;$slash$slash&quot;,
				&quot;$quote&quot; =&gt; &quot;$slash$quote&quot;,
				&quot;\t&quot;     =&gt; &#039;\t&#039;,
			);

			$input_string = str_replace( array_keys( $replaces ), array_values( $replaces ), $input_string );

			$po = $quote . implode( &quot;{$slash}n{$quote}{$newline}{$quote}&quot;, explode( $newline, $input_string ) ) . $quote;
			// Add empty string on first line for readability.
			if ( str_contains( $input_string, $newline ) &amp;&amp;
				( substr_count( $input_string, $newline ) &gt; 1 || substr( $input_string, -strlen( $newline ) ) !== $newline ) ) {
				$po = &quot;$quote$quote$newline$po&quot;;
			}
			// Remove empty strings.
			$po = str_replace( &quot;$newline$quote$quote&quot;, &#039;&#039;, $po );
			return $po;
		}

		/**
		 * Gives back the original string from a PO-formatted string
		 *
		 * @param string $input_string PO-formatted string
		 * @return string unescaped string
		 */
		public static function unpoify( $input_string ) {
			$escapes               = array(
				&#039;t&#039;  =&gt; &quot;\t&quot;,
				&#039;n&#039;  =&gt; &quot;\n&quot;,
				&#039;r&#039;  =&gt; &quot;\r&quot;,
				&#039;\\&#039; =&gt; &#039;\\&#039;,
			);
			$lines                 = array_map( &#039;trim&#039;, explode( &quot;\n&quot;, $input_string ) );
			$lines                 = array_map( array( &#039;PO&#039;, &#039;trim_quotes&#039; ), $lines );
			$unpoified             = &#039;&#039;;
			$previous_is_backslash = false;
			foreach ( $lines as $line ) {
				preg_match_all( &#039;/./u&#039;, $line, $chars );
				$chars = $chars[0];
				foreach ( $chars as $char ) {
					if ( ! $previous_is_backslash ) {
						if ( &#039;\\&#039; === $char ) {
							$previous_is_backslash = true;
						} else {
							$unpoified .= $char;
						}
					} else {
						$previous_is_backslash = false;
						$unpoified            .= $escapes[ $char ] ?? $char;
					}
				}
			}

			// Standardize the line endings on imported content, technically PO files shouldn&#039;t contain \r.
			$unpoified = str_replace( array( &quot;\r\n&quot;, &quot;\r&quot; ), &quot;\n&quot;, $unpoified );

			return $unpoified;
		}

		/**
		 * Inserts $with in the beginning of every new line of $input_string and
		 * returns the modified string
		 *
		 * @param string $input_string prepend lines in this string
		 * @param string $with         prepend lines with this string
		 */
		public static function prepend_each_line( $input_string, $with ) {
			$lines  = explode( &quot;\n&quot;, $input_string );
			$append = &#039;&#039;;
			if ( &quot;\n&quot; === substr( $input_string, -1 ) &amp;&amp; &#039;&#039; === end( $lines ) ) {
				/*
				 * Last line might be empty because $input_string was terminated
				 * with a newline, remove it from the $lines array,
				 * we&#039;ll restore state by re-terminating the string at the end.
				 */
				array_pop( $lines );
				$append = &quot;\n&quot;;
			}
			foreach ( $lines as &amp;$line ) {
				$line = $with . $line;
			}
			unset( $line );
			return implode( &quot;\n&quot;, $lines ) . $append;
		}

		/**
		 * Prepare a text as a comment -- wraps the lines and prepends #
		 * and a special character to each line
		 *
		 * @access private
		 * @param string $text the comment text
		 * @param string $char character to denote a special PO comment,
		 *  like :, default is a space
		 */
		public static function comment_block( $text, $char = &#039; &#039; ) {
			$text = wordwrap( $text, PO_MAX_LINE_LEN - 3 );
			return PO::prepend_each_line( $text, &quot;#$char &quot; );
		}

		/**
		 * Builds a string from the entry for inclusion in PO file
		 *
		 * @param Translation_Entry $entry the entry to convert to po string.
		 * @return string|false PO-style formatted string for the entry or
		 *  false if the entry is empty
		 */
		public static function export_entry( $entry ) {
			if ( null === $entry-&gt;singular || &#039;&#039; === $entry-&gt;singular ) {
				return false;
			}
			$po = array();
			if ( ! empty( $entry-&gt;translator_comments ) ) {
				$po[] = PO::comment_block( $entry-&gt;translator_comments );
			}
			if ( ! empty( $entry-&gt;extracted_comments ) ) {
				$po[] = PO::comment_block( $entry-&gt;extracted_comments, &#039;.&#039; );
			}
			if ( ! empty( $entry-&gt;references ) ) {
				$po[] = PO::comment_block( implode( &#039; &#039;, $entry-&gt;references ), &#039;:&#039; );
			}
			if ( ! empty( $entry-&gt;flags ) ) {
				$po[] = PO::comment_block( implode( &#039;, &#039;, $entry-&gt;flags ), &#039;,&#039; );
			}
			if ( $entry-&gt;context ) {
				$po[] = &#039;msgctxt &#039; . PO::poify( $entry-&gt;context );
			}
			$po[] = &#039;msgid &#039; . PO::poify( $entry-&gt;singular );
			if ( ! $entry-&gt;is_plural ) {
				$translation = empty( $entry-&gt;translations ) ? &#039;&#039; : $entry-&gt;translations[0];
				$translation = PO::match_begin_and_end_newlines( $translation, $entry-&gt;singular );
				$po[]        = &#039;msgstr &#039; . PO::poify( $translation );
			} else {
				$po[]         = &#039;msgid_plural &#039; . PO::poify( $entry-&gt;plural );
				$translations = empty( $entry-&gt;translations ) ? array( &#039;&#039;, &#039;&#039; ) : $entry-&gt;translations;
				foreach ( $translations as $i =&gt; $translation ) {
					$translation = PO::match_begin_and_end_newlines( $translation, $entry-&gt;plural );
					$po[]        = &quot;msgstr[$i] &quot; . PO::poify( $translation );
				}
			}
			return implode( &quot;\n&quot;, $po );
		}

		public static function match_begin_and_end_newlines( $translation, $original ) {
			if ( &#039;&#039; === $translation ) {
				return $translation;
			}

			$original_begin    = &quot;\n&quot; === substr( $original, 0, 1 );
			$original_end      = &quot;\n&quot; === substr( $original, -1 );
			$translation_begin = &quot;\n&quot; === substr( $translation, 0, 1 );
			$translation_end   = &quot;\n&quot; === substr( $translation, -1 );

			if ( $original_begin ) {
				if ( ! $translation_begin ) {
					$translation = &quot;\n&quot; . $translation;
				}
			} elseif ( $translation_begin ) {
				$translation = ltrim( $translation, &quot;\n&quot; );
			}

			if ( $original_end ) {
				if ( ! $translation_end ) {
					$translation .= &quot;\n&quot;;
				}
			} elseif ( $translation_end ) {
				$translation = rtrim( $translation, &quot;\n&quot; );
			}

			return $translation;
		}

		/**
		 * @param string $filename
		 * @return bool
		 */
		public function import_from_file( $filename ) {
			$f = fopen( $filename, &#039;r&#039; );
			if ( ! $f ) {
				return false;
			}
			$lineno = 0;
			while ( true ) {
				$res = $this-&gt;read_entry( $f, $lineno );
				if ( ! $res ) {
					break;
				}
				if ( &#039;&#039; === $res[&#039;entry&#039;]-&gt;singular ) {
					$this-&gt;set_headers( $this-&gt;make_headers( $res[&#039;entry&#039;]-&gt;translations[0] ) );
				} else {
					$this-&gt;add_entry( $res[&#039;entry&#039;] );
				}
			}
			PO::read_line( $f, &#039;clear&#039; );
			if ( false === $res ) {
				return false;
			}
			if ( ! $this-&gt;headers &amp;&amp; ! $this-&gt;entries ) {
				return false;
			}
			return true;
		}

		/**
		 * Helper function for read_entry
		 *
		 * @param string $context
		 * @return bool
		 */
		protected static function is_final( $context ) {
			return ( &#039;msgstr&#039; === $context ) || ( &#039;msgstr_plural&#039; === $context );
		}

		/**
		 * @param resource $f
		 * @param int      $lineno
		 * @return null|false|array
		 */
		public function read_entry( $f, $lineno = 0 ) {
			$entry = new Translation_Entry();
			// Where were we in the last step.
			// Can be: comment, msgctxt, msgid, msgid_plural, msgstr, msgstr_plural.
			$context      = &#039;&#039;;
			$msgstr_index = 0;
			while ( true ) {
				++$lineno;
				$line = PO::read_line( $f );
				if ( ! $line ) {
					if ( feof( $f ) ) {
						if ( self::is_final( $context ) ) {
							break;
						} elseif ( ! $context ) { // We haven&#039;t read a line and EOF came.
							return null;
						} else {
							return false;
						}
					} else {
						return false;
					}
				}
				if ( &quot;\n&quot; === $line ) {
					continue;
				}
				$line = trim( $line );
				if ( preg_match( &#039;/^#/&#039;, $line, $m ) ) {
					// The comment is the start of a new entry.
					if ( self::is_final( $context ) ) {
						PO::read_line( $f, &#039;put-back&#039; );
						--$lineno;
						break;
					}
					// Comments have to be at the beginning.
					if ( $context &amp;&amp; &#039;comment&#039; !== $context ) {
						return false;
					}
					// Add comment.
					$this-&gt;add_comment_to_entry( $entry, $line );
				} elseif ( preg_match( &#039;/^msgctxt\s+(&quot;.*&quot;)/&#039;, $line, $m ) ) {
					if ( self::is_final( $context ) ) {
						PO::read_line( $f, &#039;put-back&#039; );
						--$lineno;
						break;
					}
					if ( $context &amp;&amp; &#039;comment&#039; !== $context ) {
						return false;
					}
					$context         = &#039;msgctxt&#039;;
					$entry-&gt;context .= PO::unpoify( $m[1] );
				} elseif ( preg_match( &#039;/^msgid\s+(&quot;.*&quot;)/&#039;, $line, $m ) ) {
					if ( self::is_final( $context ) ) {
						PO::read_line( $f, &#039;put-back&#039; );
						--$lineno;
						break;
					}
					if ( $context &amp;&amp; &#039;msgctxt&#039; !== $context &amp;&amp; &#039;comment&#039; !== $context ) {
						return false;
					}
					$context          = &#039;msgid&#039;;
					$entry-&gt;singular .= PO::unpoify( $m[1] );
				} elseif ( preg_match( &#039;/^msgid_plural\s+(&quot;.*&quot;)/&#039;, $line, $m ) ) {
					if ( &#039;msgid&#039; !== $context ) {
						return false;
					}
					$context          = &#039;msgid_plural&#039;;
					$entry-&gt;is_plural = true;
					$entry-&gt;plural   .= PO::unpoify( $m[1] );
				} elseif ( preg_match( &#039;/^msgstr\s+(&quot;.*&quot;)/&#039;, $line, $m ) ) {
					if ( &#039;msgid&#039; !== $context ) {
						return false;
					}
					$context             = &#039;msgstr&#039;;
					$entry-&gt;translations = array( PO::unpoify( $m[1] ) );
				} elseif ( preg_match( &#039;/^msgstr\[(\d+)\]\s+(&quot;.*&quot;)/&#039;, $line, $m ) ) {
					if ( &#039;msgid_plural&#039; !== $context &amp;&amp; &#039;msgstr_plural&#039; !== $context ) {
						return false;
					}
					$context                      = &#039;msgstr_plural&#039;;
					$msgstr_index                 = $m[1];
					$entry-&gt;translations[ $m[1] ] = PO::unpoify( $m[2] );
				} elseif ( preg_match( &#039;/^&quot;.*&quot;$/&#039;, $line ) ) {
					$unpoified = PO::unpoify( $line );
					switch ( $context ) {
						case &#039;msgid&#039;:
							$entry-&gt;singular .= $unpoified;
							break;
						case &#039;msgctxt&#039;:
							$entry-&gt;context .= $unpoified;
							break;
						case &#039;msgid_plural&#039;:
							$entry-&gt;plural .= $unpoified;
							break;
						case &#039;msgstr&#039;:
							$entry-&gt;translations[0] .= $unpoified;
							break;
						case &#039;msgstr_plural&#039;:
							$entry-&gt;translations[ $msgstr_index ] .= $unpoified;
							break;
						default:
							return false;
					}
				} else {
					return false;
				}
			}

			$have_translations = false;
			foreach ( $entry-&gt;translations as $t ) {
				if ( $t || ( &#039;0&#039; === $t ) ) {
					$have_translations = true;
					break;
				}
			}
			if ( false === $have_translations ) {
				$entry-&gt;translations = array();
			}

			return array(
				&#039;entry&#039;  =&gt; $entry,
				&#039;lineno&#039; =&gt; $lineno,
			);
		}

		/**
		 * @param resource $f
		 * @param string   $action
		 * @return bool
		 */
		public function read_line( $f, $action = &#039;read&#039; ) {
			static $last_line     = &#039;&#039;;
			static $use_last_line = false;
			if ( &#039;clear&#039; === $action ) {
				$last_line = &#039;&#039;;
				return true;
			}
			if ( &#039;put-back&#039; === $action ) {
				$use_last_line = true;
				return true;
			}

			if ( $use_last_line ) {
				$line = $last_line;
			} else {
				$line = fgets( $f );
				if ( false === $line ) {
					return $line;
				}

				// Handle \r-only terminated lines after the deprecation of auto_detect_line_endings in PHP 8.1.
				$r = strpos( $line, &quot;\r&quot; );
				if ( false !== $r ) {
					if ( strlen( $line ) === $r + 1
						&amp;&amp; &quot;\r\n&quot; === substr( $line, $r )
					) {
						$line = rtrim( $line, &quot;\r\n&quot; ) . &quot;\n&quot;;
					} else {
						// The lines are terminated by just \r, so we end the line there and rewind.
						$rewind = strlen( $line ) - $r - 1;
						$line   = substr( $line, 0, $r ) . &quot;\n&quot;;
						fseek( $f, - $rewind, SEEK_CUR );
					}
				}
			}

			$last_line     = $line;
			$use_last_line = false;
			return $line;
		}

		/**
		 * @param Translation_Entry $entry
		 * @param string            $po_comment_line
		 */
		public function add_comment_to_entry( &amp;$entry, $po_comment_line ) {
			$first_two = substr( $po_comment_line, 0, 2 );
			$comment   = trim( substr( $po_comment_line, 2 ) );
			if ( &#039;#:&#039; === $first_two ) {
				$entry-&gt;references = array_merge( $entry-&gt;references, preg_split( &#039;/\s+/&#039;, $comment ) );
			} elseif ( &#039;#.&#039; === $first_two ) {
				$entry-&gt;extracted_comments = trim( $entry-&gt;extracted_comments . &quot;\n&quot; . $comment );
			} elseif ( &#039;#,&#039; === $first_two ) {
				$entry-&gt;flags = array_merge( $entry-&gt;flags, preg_split( &#039;/,\s*/&#039;, $comment ) );
			} else {
				$entry-&gt;translator_comments = trim( $entry-&gt;translator_comments . &quot;\n&quot; . $comment );
			}
		}

		/**
		 * @param string $s
		 * @return string
		 */
		public static function trim_quotes( $s ) {
			if ( str_starts_with( $s, &#039;&quot;&#039; ) ) {
				$s = substr( $s, 1 );
			}
			if ( str_ends_with( $s, &#039;&quot;&#039; ) ) {
				$s = substr( $s, 0, -1 );
			}
			return $s;
		}
	}
endif;
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