Documentation

RegexHelper

in package

• Application

Provides regular expressions and utilities for parsing Markdown

Table of Contents

PARTIAL_ATTRIBUTE  = '(?:' . '\s+' . self::PARTIAL_ATTRIBUTENAME . self::PARTIAL_ATTRIBUTEVALUESPEC . '?)'

PARTIAL_ATTRIBUTENAME  = '[a-zA-Z_:][a-zA-Z0-9:._-]*'

PARTIAL_ATTRIBUTEVALUE  = '(?:' . self::PARTIAL_UNQUOTEDVALUE . '|' . self::PARTIAL_SINGLEQUOTEDVALUE . '|' . self::PARTIAL_DOUBLEQUOTEDVALUE . ')'

PARTIAL_ATTRIBUTEVALUESPEC  = '(?:' . '\s*=' . '\s*' . self::PARTIAL_ATTRIBUTEVALUE . ')'

PARTIAL_BLOCKTAGNAME  = '(?:address|article|aside|base|basefont|blockquote|body|caption|center|col|colgroup|dd|details|dialog|dir|div|dl|dt|fieldset|figcaption|figure|footer|form|frame|frameset|h1|head|header|hr|html|iframe|legend|li|link|main|menu|menuitem|nav|noframes|ol|optgroup|option|p|param|section|source|summary|table|tbody|td|tfoot|th|thead|title|tr|track|ul)'

PARTIAL_CDATA  = '<!\[CDATA\[[\s\S]*?]\]>'

PARTIAL_CLOSEBLOCKTAG  = '<\/' . self::PARTIAL_BLOCKTAGNAME . '\s*[>]'

PARTIAL_CLOSETAG  = '<\/' . self::PARTIAL_TAGNAME . '\s*[>]'

PARTIAL_DECLARATION  = '<![A-Z]+' . '\s+[^>]*>'

PARTIAL_DOUBLEQUOTEDVALUE  = '"[^"]*"'

PARTIAL_ENTITY  = '&(?:#x[a-f0-9]{1,6}|#[0-9]{1,7}|[a-z][a-z0-9]{1,31});'

PARTIAL_ESCAPABLE  = '[!"#$%&'()*+,.\/:;<=>?@[\\\]^_`{|}~-]'

PARTIAL_ESCAPED_CHAR  = '\\' . self::PARTIAL_ESCAPABLE

PARTIAL_HTMLBLOCKOPEN  = '<(?:' . self::PARTIAL_BLOCKTAGNAME . '(?:[\s\/>]|$)' . '|' . '\/' . self::PARTIAL_BLOCKTAGNAME . '(?:[\s>]|$)' . '|' . '[?!])'

PARTIAL_HTMLCOMMENT  = '<!---->|<!--(?:-?[^>-])(?:-?[^-])*-->'

PARTIAL_HTMLTAG  = '(?:' . self::PARTIAL_OPENTAG . '|' . self::PARTIAL_CLOSETAG . '|' . self::PARTIAL_HTMLCOMMENT . '|' . self::PARTIAL_PROCESSINGINSTRUCTION . '|' . self::PARTIAL_DECLARATION . '|' . self::PARTIAL_CDATA . ')'

PARTIAL_IN_DOUBLE_QUOTES  = '"(' . self::PARTIAL_ESCAPED_CHAR . '|[^"\x00])*"'

PARTIAL_IN_PARENS  = '\((' . self::PARTIAL_ESCAPED_CHAR . '|[^)\x00])*\)'

PARTIAL_IN_PARENS_NOSP  = '\((' . self::PARTIAL_REG_CHAR . '|' . self::PARTIAL_ESCAPED_CHAR . '|\\)*\)'

PARTIAL_IN_SINGLE_QUOTES  = ''(' . self::PARTIAL_ESCAPED_CHAR . '|[^'\x00])*''

PARTIAL_LINK_TITLE  = '^(?:"(' . self::PARTIAL_ESCAPED_CHAR . '|[^"\x00])*"' . '|' . ''(' . self::PARTIAL_ESCAPED_CHAR . '|[^'\x00])*'' . '|' . '\((' . self::PARTIAL_ESCAPED_CHAR . '|[^()\x00])*\))'

PARTIAL_OPENBLOCKTAG  = '<' . self::PARTIAL_BLOCKTAGNAME . self::PARTIAL_ATTRIBUTE . '*' . '\s*\/?>'

PARTIAL_OPENTAG  = '<' . self::PARTIAL_TAGNAME . self::PARTIAL_ATTRIBUTE . '*' . '\s*\/?>'

PARTIAL_PROCESSINGINSTRUCTION  = '[<][?].*?[?][>]'

PARTIAL_REG_CHAR  = '[^\\()\x00-\x20]'

PARTIAL_SINGLEQUOTEDVALUE  = ''[^']*''

PARTIAL_TAGNAME  = '[A-Za-z][A-Za-z0-9-]*'

PARTIAL_UNQUOTEDVALUE  = '[^"'=<>`\x00-\x20]+'

REGEX_LINK_DESTINATION_BRACES  = '/^(?:<(?:[^<>\n\\\x00]|\\.)*>)/'

REGEX_NON_SPACE  = '/[^ \t\f\v\r\n]/'

REGEX_PUNCTUATION  = '/^[\x{2000}-\x{206F}\x{2E00}-\x{2E7F}\p{Pc}\p{Pd}\p{Pe}\p{Pf}\p{Pi}\p{Po}\p{Ps}\\'!"#\$%&\(\)\*\+,\-\.\/:;<=>\?@\[\]\^_`\{\|\}~]/u'

REGEX_SAFE_DATA_PROTOCOL  = '/^data:image\/(?:png|gif|jpeg|webp)/i'

REGEX_THEMATIC_BREAK  = '/^(?:\*[ \t]*){3,}$|^(?:_[ \t]*){3,}$|^(?:-[ \t]*){3,}$/'

REGEX_UNICODE_WHITESPACE_CHAR  = '/^\pZ|\s/u'

REGEX_UNSAFE_PROTOCOL  = '/^javascript:|vbscript:|file:|data:/i'

REGEX_WHITESPACE  = '/[ \t\n\x0b\x0c\x0d]+/'

REGEX_WHITESPACE_CHAR  = '/^[ \t\n\x0b\x0c\x0d]/'

isEscapable()  : bool

isLinkPotentiallyUnsafe()  : bool

matchAll()  : array<string|int, string>|null

Functional wrapper around preg_match_all

matchAt()  : int|null

Attempt to match a regex in string s at offset offset

matchFirst()  : array<string|int, string>|null

Functional wrapper around preg_match_all which only returns the first set of matches

unescape()  : string

Replace backslash escapes with literal characters