You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
65 lines
1.5 KiB
65 lines
1.5 KiB
// Process ^superscript^ |
|
|
|
'use strict'; |
|
|
|
// same as UNESCAPE_MD_RE plus a space |
|
var UNESCAPE_RE = /\\([ \\!"#$%&'()*+,.\/:;<=>?@[\]^_`{|}~-])/g; |
|
|
|
function superscript(state, silent) { |
|
var found, |
|
content, |
|
token, |
|
max = state.posMax, |
|
start = state.pos; |
|
|
|
if (state.src.charCodeAt(start) !== 0x5E/* ^ */) { return false; } |
|
if (silent) { return false; } // don't run any pairs in validation mode |
|
if (start + 2 >= max) { return false; } |
|
|
|
state.pos = start + 1; |
|
|
|
while (state.pos < max) { |
|
if (state.src.charCodeAt(state.pos) === 0x5E/* ^ */) { |
|
found = true; |
|
break; |
|
} |
|
|
|
state.md.inline.skipToken(state); |
|
} |
|
|
|
if (!found || start + 1 === state.pos) { |
|
state.pos = start; |
|
return false; |
|
} |
|
|
|
content = state.src.slice(start + 1, state.pos); |
|
|
|
// don't allow unescaped spaces/newlines inside |
|
if (content.match(/(^|[^\\])(\\\\)*\s/)) { |
|
state.pos = start; |
|
return false; |
|
} |
|
|
|
// found! |
|
state.posMax = state.pos; |
|
state.pos = start + 1; |
|
|
|
// Earlier we checked !silent, but this implementation does not need it |
|
token = state.push('sup_open', 'sup', 1); |
|
token.markup = '^'; |
|
|
|
token = state.push('text', '', 0); |
|
token.content = content.replace(UNESCAPE_RE, '$1'); |
|
|
|
token = state.push('sup_close', 'sup', -1); |
|
token.markup = '^'; |
|
|
|
state.pos = state.posMax + 1; |
|
state.posMax = max; |
|
return true; |
|
} |
|
|
|
|
|
module.exports = function sup_plugin(md) { |
|
md.inline.ruler.after('emphasis', 'sup', superscript); |
|
};
|
|
|