*/
class syntax_plugin_character extends SyntaxPlugin {
public function getType() {
return 'substition';
}
public function getPType() {
return 'normal';
}
public function getSort() {
return 100;
}
public function connectTo($mode) {
$this->Lexer->addSpecialPattern('{{c>[^}]*}?}}', $mode, 'plugin_character');
}
const ES = [
0 => ['\\0', 'NULL'],
8 => ['\\b', 'BACKSPACE'],
9 => ['\\t', 'CHARACTER TABULATION'],
10 => ['\\n', 'LINE FEED'],
11 => ['\\v', 'LINE TABULATION'],
12 => ['\\f', 'FORM FEED'],
13 => ['\\r', 'CARRIAGE RETURN'],
92 => ['\\\\', 'REVERSE SOLIDUS']
];
public function handle($match, $state, $pos, Doku_Handler $handler) {
$data = [];
$raw = substr($match, 4, -2);
$data['raw'] = $raw;
// U+0000 to U+10FFFFF Notation
if (preg_match('/^u\+([0-9a-f]{1,7})$/i', $raw)) {
$data['type'] = 'codepoint';
$data['codepoint'] = hexdec(substr($raw, 2));
} else if (preg_match('/^\\\\x[0-9a-f]{2}$/i', $raw)) {
$data['type'] = 'hex_esc_seq';
$data['codepoint'] = hexdec(substr($raw, 2));
} else if (preg_match('/^\\\\u\{[0-9a-f]{1,6}\}$/i', $raw)) {
$data['type'] = 'codepoint_escape';
$data['codepoint'] = hexdec(substr($raw, 3, -1));
} else if (preg_match('/^&#[0-9]+;$/i', $raw)) {
$data['type'] = 'dec_html_entity';
$data['codepoint'] = intval(substr($raw, 2, -1));
} else if (preg_match('/^&#x[0-9a-f]+;$/i', $raw)) {
$data['type'] = 'hex_html_entity';
$data['codepoint'] = hexdec(substr($raw, 3, -1));
} else if (preg_match('/^(%[0-9a-f]{2}){1,4}/i', $raw)) {
$data['type'] = 'url_encoding';
$char = urldecode($raw);
$data['codepoint'] = mb_ord($char);
if (mb_strlen($char)!=1) $data['type'] = 'error';
} else if (mb_strlen($raw) == 1) {
$data['type'] = 'character_literal';
$data['codepoint'] = mb_ord($raw);
} else {
$data['type'] = 'error';
$data['msg'] = mb_strlen($raw);
$data['codepoint'] = -1;
foreach (self::ES as $key => $entry) {
if ($raw==$entry[0]) {
$data['type'] = 'escape_sequence';
$data['codepoint'] = $key;
}
}
}
return $data;
}
public function render($mode, Doku_Renderer $renderer, $data) {
if ($mode !== 'xhtml') return false;
$codepoint = $data['codepoint'];
if ($data['type']=='error' || $codepoint > 0x10FFFFF) {
if (empty($data['msg'])) $data['msg'] = '-';
$renderer->doc .= '⚠️ invalid input ['
. htmlentities($data['raw']) .']: '.$data['msg'].'';
return true;
}
$char = mb_chr($codepoint);
$rendered = 'invalid';
$hex = strtoupper(dechex($codepoint));
$paddedHex = str_pad($hex, 4, '0', STR_PAD_LEFT);
$charname = extension_loaded('intl') ? ' '.IntlChar::charName($codepoint).'' : '';
$escapesequence = '\u{'.dechex($codepoint).'}';
if (!empty(self::ES[$codepoint])) {
//$escapesequence = self::ES[$codepoint][0];
$charname = ' '.self::ES[$codepoint][1];
}
$urlencoding = urlencode($char);
if ($urlencoding=='+') $urlencoding = '%20';
$orange = ' style="color: goldenrod"';
$dred = ' style="color: darkred"';
$green = ' style="color: green"';
$blue = ' style="color: blue"';
$bytes = unpack('C*', mb_convert_encoding($char, 'UTF-8', 'UTF-8'));
$type = $data['type'];
if ($type=='codepoint') {
$rendered = "U+$paddedHex";
$tip = "unicode code point";
} else if ($type=='hex_esc_seq') {
$p = strtoupper(str_pad(dechex($codepoint), 2, '0', STR_PAD_LEFT));
$rendered = "\x$p";
$tip = "hexadecimal escape sequence";
} else if ($type=='codepoint_escape') {
$p = strtoupper(dechex($codepoint));
$rendered = "\u{$p}";
$tip = 'code point escape sequence';
} else if ($type=='dec_html_entity') {
$rendered = "&#$codepoint;";
$tip = "decimal HTML entity";
} else if ($type=='hex_html_entity') {
$rendered = "&#x$hex;";
$tip = "hexadecimal HTML entity";
} else if ($type=='url_encoding') {
$rendered = "".htmlentities($data['raw'])."";
$tip = "URL encoding";
} else if ($type=='character_literal') {
$rendered = ''.htmlentities($data['raw']).'';
$tip = 'character literal';
} else if ($type=='escape_sequence') {
$rendered = ''.htmlentities($data['raw']).'';
$tip = 'escape sequence';
}
$renderer->doc .= ''
.''
.''
.$tip.''
.'character'
.htmlentities($char)." $charname"
."code point$codepointDEC";
if ($type != 'escape_sequence' && !empty(self::ES[$codepoint]))
$renderer->doc .= 'escape sequence'
.self::ES[$codepoint][0].'';
if ($type != 'codepoint_escape')
$renderer->doc .= "escape sequence$escapesequenceHEX";
if ($type != 'hex_html_entity')
$renderer->doc .= "HTML entity&#$codepoint;DEC";
if ($type != 'dec_html_entity')
$renderer->doc .= "HTML entity&#x$hex;HEX";
if ($type != 'url_encoding' && ($urlencoding=='+' || strlen($urlencoding)>1))
$renderer->doc .= "URL encoding$urlencodingHEX";
$renderer->doc .= 'UTF-8 code units'
.join(' ', array_map(function ($i) { return str_pad(decbin($i), 8, '0', STR_PAD_LEFT); }, $bytes))
.'BIN';
$renderer->doc .= "$rendered";
return true;
}
}