mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-11-23 18:17:20 +00:00
93 lines
2.8 KiB
JavaScript
Executable File
93 lines
2.8 KiB
JavaScript
Executable File
/*
|
|
Parse a space-separated string of name:value parameters. Values can be quoted with single quotes, double quotes,
|
|
double square brackets, or double curly braces.
|
|
|
|
The parameters are returned in a structure that can be referenced like this:
|
|
|
|
(return).byName["name"][0] - First occurance of parameter with a given name
|
|
(return).byPos[0].n - Name of parameter in first position
|
|
(return).byPos[0].v - Value of parameter in first position
|
|
|
|
Options and their defaults are:
|
|
|
|
defaultName: null,
|
|
defaultValue: null,
|
|
noNames: false,
|
|
cascadeDefaults: false
|
|
|
|
*/
|
|
|
|
var ArgParser = function(argString,options) {
|
|
var parseToken = function(match,p) {
|
|
var n;
|
|
if(match[p]) // Double quoted
|
|
n = match[p];
|
|
else if(match[p+1]) // Single quoted
|
|
n = match[p+1];
|
|
else if(match[p+2]) // Double-square-bracket quoted
|
|
n = match[p+2];
|
|
else if(match[p+3]) // Double-brace quoted
|
|
n = match[p+3];
|
|
else if(match[p+4]) // Unquoted
|
|
n = match[p+4];
|
|
else if(match[p+5]) // empty quote
|
|
n = "";
|
|
return n;
|
|
};
|
|
this.byPos = [];
|
|
var dblQuote = "(?:\"((?:(?:\\\\\")|[^\"])+)\")";
|
|
var sngQuote = "(?:'((?:(?:\\\\\')|[^'])+)')";
|
|
var dblSquare = "(?:\\[\\[((?:\\s|\\S)*?)\\]\\])";
|
|
var dblBrace = "(?:\\{\\{((?:\\s|\\S)*?)\\}\\})";
|
|
var unQuoted = options.noNames ? "([^\"'\\s]\\S*)" : "([^\"':\\s][^\\s:]*)";
|
|
var emptyQuote = "((?:\"\")|(?:''))";
|
|
var skipSpace = "(?:\\s*)";
|
|
var token = "(?:" + dblQuote + "|" + sngQuote + "|" + dblSquare + "|" + dblBrace + "|" + unQuoted + "|" + emptyQuote + ")";
|
|
var re = options.noNames ? new RegExp(token,"mg") : new RegExp(skipSpace + token + skipSpace + "(?:(\\:)" + skipSpace + token + ")?","mg");
|
|
do {
|
|
var match = re.exec(argString);
|
|
if(match) {
|
|
var n = parseToken(match,1);
|
|
if(options.noNames) {
|
|
this.byPos.push({n:"", v:n});
|
|
} else {
|
|
var v = parseToken(match,8);
|
|
if(v === null && options.defaultName) {
|
|
v = n;
|
|
n = options.defaultName;
|
|
} else if(v === null && options.defaultValue) {
|
|
v = options.defaultValue;
|
|
}
|
|
this.byPos.push({n:n, v:v});
|
|
if(options.cascadeDefaults) {
|
|
options.defaultName = n;
|
|
options.defaultValue = v;
|
|
}
|
|
}
|
|
}
|
|
} while(match);
|
|
this.byName = {};
|
|
for(var t=0; t<this.byPos.length; t++) {
|
|
var n = this.byPos[t].n;
|
|
var v = this.byPos[t].v;
|
|
if(n in this.byName)
|
|
this.byName[n].push(v);
|
|
else
|
|
this.byName[n] = [v];
|
|
}
|
|
}
|
|
|
|
// Retrieve the first occurance of a named parameter, or the default if missing
|
|
ArgParser.prototype.getValueByName = function(n,defaultValue) {
|
|
var v = this.byName[n];
|
|
return v && v.length > 0 ? v[0] : defaultValue;
|
|
}
|
|
|
|
// Retrieve all the values of a named parameter as an array
|
|
ArgParser.prototype.getValuesByName = function(n,defaultValue) {
|
|
var v = this.byName[n];
|
|
return v && v.length > 0 ? v : defaultValue;
|
|
}
|
|
|
|
exports.ArgParser = ArgParser
|