44 lines
1.1 KiB
TypeScript
44 lines
1.1 KiB
TypeScript
|
/*
|
|||
|
|
* @license
|
|||
|
|
*
|
|||
|
|
* Copyright (c) 2011-2014, Christopher Jeffrey. (MIT Licensed)
|
|||
|
|
* https://github.com/chjj/marked
|
|||
|
|
*
|
|||
|
|
* Copyright (c) 2018, Костя Третяк. (MIT Licensed)
|
|||
|
|
* https://github.com/ts-stack/markdown
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
export class ExtendRegexp {
|
|||
|
|
private source: string;
|
|||
|
|
private flags: string;
|
|||
|
|
|
|||
|
|
constructor(regex: RegExp, flags: string = "") {
|
|||
|
|
this.source = regex.source;
|
|||
|
|
this.flags = flags;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Extend regular expression.
|
|||
|
|
*
|
|||
|
|
* @param groupName Regular expression for search a group name.
|
|||
|
|
* @param groupRegexp Regular expression of named group.
|
|||
|
|
*/
|
|||
|
|
setGroup(groupName: RegExp | string, groupRegexp: RegExp | string): this {
|
|||
|
|
let newRegexp: string = typeof groupRegexp == "string"
|
|||
|
|
? groupRegexp
|
|||
|
|
: groupRegexp.source;
|
|||
|
|
newRegexp = newRegexp.replace(/(^|[^\[])\^/g, "$1");
|
|||
|
|
|
|||
|
|
// Extend regexp.
|
|||
|
|
this.source = this.source.replace(groupName, newRegexp);
|
|||
|
|
return this;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Returns a result of extending a regular expression.
|
|||
|
|
*/
|
|||
|
|
getRegexp(): RegExp {
|
|||
|
|
return new RegExp(this.source, this.flags);
|
|||
|
|
}
|
|||
|
|
}
|