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#include "bstrlib.h"
/*!re2c
re2c:define:YYCTYPE = "unsigned char";
re2c:define:YYCURSOR = p;
re2c:define:YYMARKER = marker;
re2c:define:YYCTXMARKER = marker;
re2c:yyfill:enable = 0;
wordchar = [^\x00-\x20];
spacechar = [ \t\n];
reg_char = [^\\()\x00-\x20];
escaped_char = [\\][!"#$%&'()*+,./:;<=>?@[\\\]^_`{|}~-];
tagname = [A-Za-z][A-Za-z0-9]*;
blocktagname = 'article'|'header'|'aside'|'hgroup'|'blockquote'|'hr'|'body'|'li'|'map'|'button'|'object'|'canvas'|'ol'|'caption'|'output'|'col'|'p'|'colgroup'|'pre'|'dd'|'progress'|'div'|'section'|'dl'|'table'|'td'|'dt'|'tbody'|'embed'|'textarea'|'fieldset'|'tfoot'|'figcaption'|'th'|'figure'|'thead'|'footer'|'footer'|'tr'|'form'|'ul'|'h1'|'h2'|'h3'|'h4'|'h5'|'h6'|'video'|'script'|'style';
attributename = [a-zA-Z_:][a-zA-Z0-9:._-]*;
unquotedvalue = [^\"'=<>`\x00]+;
singlequotedvalue = ['][^'\x00]*['];
doublequotedvalue = [\"][^\"\x00]*[\"];
attributevalue = unquotedvalue | singlequotedvalue | doublequotedvalue;
attributevaluespec = spacechar* [=] spacechar* attributevalue;
attribute = spacechar+ attributename attributevaluespec?;
opentag = tagname attribute* spacechar* [/]? [>];
closetag = [/] tagname spacechar* [>];
htmlcomment = "!--" ([^-\x00]+ | [-][^-\x00]+)* "-->";
processinginstruction = "?" ([^?>\x00]+ | [?][^>\x00])* "?>";
declaration = "!" [A-Z]+ spacechar+ [^>\x00]* ">";
cdata = "![CDATA[" ([^\]\x00]+ | "]" [^\]\x00] | "]]" [^>\x00])* "]]>";
htmltag = opentag | closetag | htmlcomment | processinginstruction |
declaration | cdata;
in_parens_nosp = [(] (reg_char|escaped_char)* [)];
in_double_quotes = ["] (escaped_char|[^"\x00])* ["];
in_single_quotes = ['] (escaped_char|[^'\x00])* ['];
in_parens = [(] (escaped_char|[^)\x00])* [)];
scheme = 'coap'|'doi'|'javascript'|'aaa'|'aaas'|'about'|'acap'|'cap'|'cid'|'crid'|'data'|'dav'|'dict'|'dns'|'file'|'ftp'|'geo'|'go'|'gopher'|'h323'|'http'|'https'|'iax'|'icap'|'im'|'imap'|'info'|'ipp'|'iris'|'iris.beep'|'iris.xpc'|'iris.xpcs'|'iris.lwz'|'ldap'|'mailto'|'mid'|'msrp'|'msrps'|'mtqp'|'mupdate'|'news'|'nfs'|'ni'|'nih'|'nntp'|'opaquelocktoken'|'pop'|'pres'|'rtsp'|'service'|'session'|'shttp'|'sieve'|'sip'|'sips'|'sms'|'snmp'|'soap.beep'|'soap.beeps'|'tag'|'tel'|'telnet'|'tftp'|'thismessage'|'tn3270'|'tip'|'tv'|'urn'|'vemmi'|'ws'|'wss'|'xcon'|'xcon-userid'|'xmlrpc.beep'|'xmlrpc.beeps'|'xmpp'|'z39.50r'|'z39.50s'|'adiumxtra'|'afp'|'afs'|'aim'|'apt'|'attachment'|'aw'|'beshare'|'bitcoin'|'bolo'|'callto'|'chrome'|'chrome-extension'|'com-eventbrite-attendee'|'content'|'cvs'|'dlna-playsingle'|'dlna-playcontainer'|'dtn'|'dvb'|'ed2k'|'facetime'|'feed'|'finger'|'fish'|'gg'|'git'|'gizmoproject'|'gtalk'|'hcp'|'icon'|'ipn'|'irc'|'irc6'|'ircs'|'itms'|'jar'|'jms'|'keyparc'|'lastfm'|'ldaps'|'magnet'|'maps'|'market'|'message'|'mms'|'ms-help'|'msnim'|'mumble'|'mvn'|'notes'|'oid'|'palm'|'paparazzi'|'platform'|'proxy'|'psyc'|'query'|'res'|'resource'|'rmi'|'rsync'|'rtmp'|'secondlife'|'sftp'|'sgn'|'skype'|'smb'|'soldat'|'spotify'|'ssh'|'steam'|'svn'|'teamspeak'|'things'|'udp'|'unreal'|'ut2004'|'ventrilo'|'view-source'|'webcal'|'wtai'|'wyciwyg'|'xfire'|'xri'|'ymsgr';
*/
// Try to match URI autolink after first <, returning number of chars matched.
extern int scan_autolink_uri(bstring s, int pos)
{
unsigned char * marker = NULL;
unsigned char * p = &(s->data[pos]);
unsigned char * start = p;
/*!re2c
scheme [:]([^\x00-\x20<>\\]|escaped_char)*[>] { return (p - start); }
.? { return 0; }
*/
}
// Try to match email autolink after first <, returning num of chars matched.
extern int scan_autolink_email(bstring s, int pos)
{
unsigned char * marker = NULL;
unsigned char * p = &(s->data[pos]);
unsigned char * start = p;
/*!re2c
[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+
[@]
[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?
([.][a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*
[>] { return (p - start); }
.? { return 0; }
*/
}
// Try to match an HTML tag after first <, returning num of chars matched.
extern int scan_html_tag(bstring s, int pos)
{
unsigned char * marker = NULL;
unsigned char * p = &(s->data[pos]);
unsigned char * start = p;
/*!re2c
htmltag { return (p - start); }
.? { return 0; }
*/
}
// Try to match an HTML block tag including first <,
// returning num of chars matched.
extern int scan_html_block_tag(bstring s, int pos)
{
unsigned char * marker = NULL;
unsigned char * p = &(s->data[pos]);
unsigned char * start = p;
/*!re2c
[<] [/] blocktagname (spacechar | [>]) { return (p - start); }
[<] blocktagname (spacechar | [/>]) { return (p - start); }
[<] [!?] { return (p - start); }
.? { return 0; }
*/
}
// Try to match a URL in a link or reference, return number of chars matched.
// This may optionally be contained in <..>; otherwise
// whitespace and unbalanced right parentheses aren't allowed.
// Newlines aren't ever allowed.
extern int scan_link_url(bstring s, int pos)
{
unsigned char * marker = NULL;
unsigned char * p = &(s->data[pos]);
unsigned char * start = p;
/*!re2c
[ \n]* [<] ([^<>\n\\\x00] | escaped_char | [\\])* [>] { return (p - start); }
[ \n]* (reg_char+ | escaped_char | in_parens_nosp)* { return (p - start); }
.? { return 0; }
*/
}
// Try to match a link title (in single quotes, in double quotes, or
// in parentheses), returning number of chars matched. Allow one
// level of internal nesting (quotes within quotes).
extern int scan_link_title(bstring s, int pos)
{
unsigned char * marker = NULL;
unsigned char * p = &(s->data[pos]);
unsigned char * start = p;
/*!re2c
["] (escaped_char|[^"\x00])* ["] { return (p - start); }
['] (escaped_char|[^'\x00])* ['] { return (p - start); }
[(] (escaped_char|[^)\x00])* [)] { return (p - start); }
.? { return 0; }
*/
}
// Match space characters, including newlines.
extern int scan_spacechars(bstring s, int pos)
{
unsigned char * p = &(s->data[pos]);
unsigned char * start = p;
/*!re2c
[ \t\n]* { return (p - start); }
. { return 0; }
*/
}
// Match ATX header start.
extern int scan_atx_header_start(bstring s, int pos)
{
unsigned char * marker = NULL;
unsigned char * p = &(s->data[pos]);
unsigned char * start = p;
/*!re2c
[#]{1,6} ([ ]+|[\n]) { return (p - start); }
.? { return 0; }
*/
}
// Match sexext header line. Return 1 for level-1 header,
// 2 for level-2, 0 for no match.
extern int scan_setext_header_line(bstring s, int pos)
{
unsigned char * marker = NULL;
unsigned char * p = &(s->data[pos]);
/*!re2c
[=]+ [ ]* [\n] { return 1; }
[-]+ [ ]* [\n] { return 2; }
.? { return 0; }
*/
}
// Scan a horizontal rule line: "...three or more hyphens, asterisks,
// or underscores on a line by themselves. If you wish, you may use
// spaces between the hyphens or asterisks."
extern int scan_hrule(bstring s, int pos)
{
unsigned char * marker = NULL;
unsigned char * p = &(s->data[pos]);
unsigned char * start = p;
/*!re2c
([*][ ]*){3,} [ \t]* [\n] { return (p - start); }
([_][ ]*){3,} [ \t]* [\n] { return (p - start); }
([-][ ]*){3,} [ \t]* [\n] { return (p - start); }
.? { return 0; }
*/
}
// Scan an opening code fence.
extern int scan_open_code_fence(bstring s, int pos)
{
unsigned char * marker = NULL;
unsigned char * p = &(s->data[pos]);
unsigned char * start = p;
/*!re2c
[`]{3,} / [^`\n\x00]*[\n] { return (p - start); }
[~]{3,} / [^~\n\x00]*[\n] { return (p - start); }
.? { return 0; }
*/
}
// Scan a closing code fence with length at least len.
extern int scan_close_code_fence(bstring s, int pos, int len)
{
unsigned char * marker = NULL;
unsigned char * p = &(s->data[pos]);
unsigned char * start = p;
/*!re2c
([`]{3,} | [~]{3,}) / spacechar* [\n]
{ if (p - start > len) {
return (p - start);
} else {
return 0;
} }
.? { return 0; }
*/
}
// Scans an entity.
// Returns number of chars matched.
extern int scan_entity(bstring s, int pos)
{
unsigned char * marker = NULL;
unsigned char * p = &(s->data[pos]);
unsigned char * start = p;
/*!re2c
[&] ([#] ([Xx][A-Fa-f0-9]{1,8}|[0-9]{1,8}) |[A-Za-z][A-Za-z0-9]{1,31} ) [;]
{ return (p - start); }
.? { return 0; }
*/
}
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