I'm trying to see if there's something that exists to do the following. I'd hate to reinvent the wheel.
I have a string like this. It's a file name.
2014-12-22-thomas-javascript.md
I want to be able to provide a format for this schema.
{year}-{month}-{day}-{name}-{topic}.{extension}
And I'd like an object in return.
{
"year": "2014",
"month": "12",
"day": "22",
"name": "thomas",
"topic": "javascript",
"extension": "md"
}
This way of providing a string and a format is very reticent of these two functions from node core util, moment parse, and jekyll post names.
At the risk of reinventing a wheel;
String.parse = function parse() {
if(typeof arguments[0] === 'string' && typeof arguments[1] === 'string' ) {
var str = arguments[0];
var val = arguments[1];
var array = [], obj = {};
var re = /(?:{)([a-z]*)(?:})/gi;
var match, sre = str;
while(match = re.exec(str)) {
array.push(match[1]);
sre = sre.replace(match[0], '(\\w*)');
}
re = new RegExp(sre);
var matches = val.match(re);
if(matches) {
for(var i = 1; i < matches.length; i++) {
obj[array[i-1]] = matches[i];
}
}
return obj;
}
}
No doubt there are a bunch of ways this will break but works with your example;
String.parse("{year}-{month}-{day}-{name}-{topic}.{extension}", "2014-12-22-thomas-javascript.md");
EDIT
And for performing the reverse;
String.format = function format() {
if (typeof arguments[0] === 'string') {
var s = arguments[0];
var re = /(?:{)(\d*)(?:})/gi;
var a, i, match, search = s;
while (match = re.exec(search)) {
for (i = 1; i < arguments.length; i++) {
a = parseInt(match[1]) + 1;
s = s.replace(match[0], typeof arguments[a] !== 'object' ? arguments[a] || '' : '');
}
}
re = /(?:{)([a-z]*)(?:})/gi;
match, search = s;
while (match = re.exec(search)) {
for (i = 1; i < arguments.length; i++) {
if (arguments[i].hasOwnProperty(match[1])) {
s = s.replace(match[0], arguments[i][match[1]]);
}
}
}
return s;
}
}
Which can accept named object members or positional for non-objects.
String.format("{0}-{name}{1}-{year}-{src}", 20, "abc", { name: "xyz", year: 2014 }, { src: 'StackOverflow' });
20-xyzabc-2014-StackOverflow
I found the code in Hexo, it's like jekyll but built with node.
var Permalink = require('hexo-util').Permalink;
var permalink = new Permalink(':year-:month-:day-:name-:topic.:extension
', {
segments: {
year: /(\d{4})/,
month: /(\d{2})/,
day: /(\d{2})/
}
});
permalink.parse('2014-12-22-thomas-javascript.md');
// {year: 2014, month: 12, day: 22, ...}
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.