kopia lustrzana https://github.com/miklobit/TiddlyWiki5
115 wiersze
3.3 KiB
JavaScript
Executable File
115 wiersze
3.3 KiB
JavaScript
Executable File
/*\
|
|
title: js/ArgParser.js
|
|
|
|
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.string - Value of parameter in first position
|
|
(return).byPos[0].v.evaluated - True if the parameter is to be evaluated
|
|
|
|
Options and their defaults are:
|
|
|
|
defaultName: null,
|
|
defaultValue: null,
|
|
noNames: false,
|
|
cascadeDefaults: false,
|
|
allowEval: true
|
|
|
|
\*/
|
|
(function(){
|
|
|
|
/*jslint node: true */
|
|
"use strict";
|
|
|
|
var ArgParser = function(argString,options) {
|
|
options = options || {};
|
|
var defaultName = options.defaultName,
|
|
defaultValue = options.defaultValue;
|
|
var parseToken = function(match,p) {
|
|
var n;
|
|
if(match[p]) { // Double quoted
|
|
n = {string: match[p]};
|
|
} else if(match[p+1]) { // Single quoted
|
|
n = {string: match[p+1]};
|
|
} else if(match[p+2]) { // Double-square-bracket quoted
|
|
n = {string: match[p+2]};
|
|
} else if(match[p+3]) { // Double-brace quoted
|
|
n = {string: match[p+3], evaluated: true};
|
|
} else if(match[p+4]) { // Unquoted
|
|
n = {string: match[p+4]};
|
|
} else if(match[p+5]) { // empty quote
|
|
n = {string: ""};
|
|
}
|
|
return n;
|
|
};
|
|
this.byPos = [];
|
|
var dblQuote = "(?:\"((?:(?:\\\\\")|[^\"])+)\")",
|
|
sngQuote = "(?:'((?:(?:\\\\\')|[^'])+)')",
|
|
dblSquare = "(?:\\[\\[((?:\\s|\\S)*?)\\]\\])",
|
|
dblBrace = "(?:\\{\\{((?:\\s|\\S)*?)\\}\\})",
|
|
unQuoted = options.noNames ? "([^\"'\\s]\\S*)" : "([^\"':\\s][^\\s:]*)",
|
|
emptyQuote = "((?:\"\")|(?:''))",
|
|
skipSpace = "(?:\\s*)",
|
|
token = "(?:" + dblQuote + "|" + sngQuote + "|" + dblSquare + "|" + dblBrace + "|" + unQuoted + "|" + emptyQuote + ")",
|
|
re = options.noNames ? new RegExp(token,"mg") : new RegExp(skipSpace + token + skipSpace + "(?:(\\:)" + skipSpace + token + ")?","mg"),
|
|
match,n,v;
|
|
do {
|
|
match = re.exec(argString);
|
|
if(match) {
|
|
n = parseToken(match,1);
|
|
if(options.noNames) {
|
|
this.byPos.push({n:"", v:n});
|
|
} else {
|
|
v = parseToken(match,8);
|
|
if(v === undefined && defaultName) {
|
|
v = n;
|
|
n = defaultName;
|
|
} else if(v === undefined && defaultValue) {
|
|
v = defaultValue;
|
|
}
|
|
if(n.evaluated === true) {
|
|
n = "{{" + n.string + "}}";
|
|
} else if (typeof n === "object" && n.hasOwnProperty("string")) {
|
|
n = n.string;
|
|
}
|
|
this.byPos.push({n:n, v:v});
|
|
if(options.cascadeDefaults) {
|
|
defaultName = n;
|
|
defaultValue = v;
|
|
}
|
|
}
|
|
}
|
|
} while(match);
|
|
this.byName = {};
|
|
for(var t=0; t<this.byPos.length; t++) {
|
|
n = this.byPos[t].n;
|
|
v = this.byPos[t].v;
|
|
if(this.byName.hasOwnProperty(n))
|
|
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) {
|
|
var v = this.byName[n];
|
|
return v && v.length > 0 ? v[0] : null;
|
|
};
|
|
|
|
// Retrieve all the string values as an array
|
|
ArgParser.prototype.getStringValues = function() {
|
|
var result = [];
|
|
for(var t=0; t<this.byPos.length; t++) {
|
|
result.push(this.byPos[t].v.string);
|
|
}
|
|
return result;
|
|
};
|
|
|
|
exports.ArgParser = ArgParser;
|
|
|
|
})();
|