From 5006c754c42a09f5b88b258c2da4b9eff7508357 Mon Sep 17 00:00:00 2001 From: Andrew Dolgov Date: Sun, 24 Jul 2022 14:03:04 +0300 Subject: readability: add missing dependencies --- .../html5/src/HTML5/Parser/UTF8Utils.php | 183 +++++++++++++++++++++ 1 file changed, 183 insertions(+) create mode 100644 plugins/af_readability/vendor/masterminds/html5/src/HTML5/Parser/UTF8Utils.php (limited to 'plugins/af_readability/vendor/masterminds/html5/src/HTML5/Parser/UTF8Utils.php') diff --git a/plugins/af_readability/vendor/masterminds/html5/src/HTML5/Parser/UTF8Utils.php b/plugins/af_readability/vendor/masterminds/html5/src/HTML5/Parser/UTF8Utils.php new file mode 100644 index 000000000..f6a70bfac --- /dev/null +++ b/plugins/af_readability/vendor/masterminds/html5/src/HTML5/Parser/UTF8Utils.php @@ -0,0 +1,183 @@ + + +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. +*/ + +use Masterminds\HTML5\Exception; + +class UTF8Utils +{ + /** + * The Unicode replacement character. + */ + const FFFD = "\xEF\xBF\xBD"; + + /** + * Count the number of characters in a string. + * UTF-8 aware. This will try (in order) iconv, MB, libxml, and finally a custom counter. + * + * @param string $string + * + * @return int + */ + public static function countChars($string) + { + // Get the length for the string we need. + if (function_exists('mb_strlen')) { + return mb_strlen($string, 'utf-8'); + } + + if (function_exists('iconv_strlen')) { + return iconv_strlen($string, 'utf-8'); + } + + if (function_exists('utf8_decode')) { + // MPB: Will this work? Won't certain decodes lead to two chars + // extrapolated out of 2-byte chars? + return strlen(utf8_decode($string)); + } + + $count = count_chars($string); + + // 0x80 = 0x7F - 0 + 1 (one added to get inclusive range) + // 0x33 = 0xF4 - 0x2C + 1 (one added to get inclusive range) + return array_sum(array_slice($count, 0, 0x80)) + array_sum(array_slice($count, 0xC2, 0x33)); + } + + /** + * Convert data from the given encoding to UTF-8. + * + * This has not yet been tested with charactersets other than UTF-8. + * It should work with ISO-8859-1/-13 and standard Latin Win charsets. + * + * @param string $data The data to convert + * @param string $encoding A valid encoding. Examples: http://www.php.net/manual/en/mbstring.supported-encodings.php + * + * @return string + */ + public static function convertToUTF8($data, $encoding = 'UTF-8') + { + /* + * From the HTML5 spec: Given an encoding, the bytes in the input stream must be converted + * to Unicode characters for the tokeniser, as described by the rules for that encoding, + * except that the leading U+FEFF BYTE ORDER MARK character, if any, must not be stripped + * by the encoding layer (it is stripped by the rule below). Bytes or sequences of bytes + * in the original byte stream that could not be converted to Unicode characters must be + * converted to U+FFFD REPLACEMENT CHARACTER code points. + */ + + // mb_convert_encoding is chosen over iconv because of a bug. The best + // details for the bug are on http://us1.php.net/manual/en/function.iconv.php#108643 + // which contains links to the actual but reports as well as work around + // details. + if (function_exists('mb_convert_encoding')) { + // mb library has the following behaviors: + // - UTF-16 surrogates result in false. + // - Overlongs and outside Plane 16 result in empty strings. + + // Before we run mb_convert_encoding we need to tell it what to do with + // characters it does not know. This could be different than the parent + // application executing this library so we store the value, change it + // to our needs, and then change it back when we are done. This feels + // a little excessive and it would be great if there was a better way. + $save = mb_substitute_character(); + mb_substitute_character('none'); + $data = mb_convert_encoding($data, 'UTF-8', $encoding); + mb_substitute_character($save); + } + // @todo Get iconv running in at least some environments if that is possible. + elseif (function_exists('iconv') && 'auto' !== $encoding) { + // fprintf(STDOUT, "iconv found\n"); + // iconv has the following behaviors: + // - Overlong representations are ignored. + // - Beyond Plane 16 is replaced with a lower char. + // - Incomplete sequences generate a warning. + $data = @iconv($encoding, 'UTF-8//IGNORE', $data); + } else { + throw new Exception('Not implemented, please install mbstring or iconv'); + } + + /* + * One leading U+FEFF BYTE ORDER MARK character must be ignored if any are present. + */ + if ("\xEF\xBB\xBF" === substr($data, 0, 3)) { + $data = substr($data, 3); + } + + return $data; + } + + /** + * Checks for Unicode code points that are not valid in a document. + * + * @param string $data A string to analyze + * + * @return array An array of (string) error messages produced by the scanning + */ + public static function checkForIllegalCodepoints($data) + { + // Vestigal error handling. + $errors = array(); + + /* + * All U+0000 null characters in the input must be replaced by U+FFFD REPLACEMENT CHARACTERs. + * Any occurrences of such characters is a parse error. + */ + for ($i = 0, $count = substr_count($data, "\0"); $i < $count; ++$i) { + $errors[] = 'null-character'; + } + + /* + * Any occurrences of any characters in the ranges U+0001 to U+0008, U+000B, U+000E to U+001F, U+007F + * to U+009F, U+D800 to U+DFFF , U+FDD0 to U+FDEF, and characters U+FFFE, U+FFFF, U+1FFFE, U+1FFFF, + * U+2FFFE, U+2FFFF, U+3FFFE, U+3FFFF, U+4FFFE, U+4FFFF, U+5FFFE, U+5FFFF, U+6FFFE, U+6FFFF, U+7FFFE, + * U+7FFFF, U+8FFFE, U+8FFFF, U+9FFFE, U+9FFFF, U+AFFFE, U+AFFFF, U+BFFFE, U+BFFFF, U+CFFFE, U+CFFFF, + * U+DFFFE, U+DFFFF, U+EFFFE, U+EFFFF, U+FFFFE, U+FFFFF, U+10FFFE, and U+10FFFF are parse errors. + * (These are all control characters or permanently undefined Unicode characters.) + */ + // Check PCRE is loaded. + $count = preg_match_all( + '/(?: + [\x01-\x08\x0B\x0E-\x1F\x7F] # U+0001 to U+0008, U+000B, U+000E to U+001F and U+007F + | + \xC2[\x80-\x9F] # U+0080 to U+009F + | + \xED(?:\xA0[\x80-\xFF]|[\xA1-\xBE][\x00-\xFF]|\xBF[\x00-\xBF]) # U+D800 to U+DFFFF + | + \xEF\xB7[\x90-\xAF] # U+FDD0 to U+FDEF + | + \xEF\xBF[\xBE\xBF] # U+FFFE and U+FFFF + | + [\xF0-\xF4][\x8F-\xBF]\xBF[\xBE\xBF] # U+nFFFE and U+nFFFF (1 <= n <= 10_{16}) + )/x', $data, $matches); + for ($i = 0; $i < $count; ++$i) { + $errors[] = 'invalid-codepoint'; + } + + return $errors; + } +} -- cgit v1.2.3