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'use strict';
import every from '@arr/every';
const SEP = '/';
// Types ~> static, param, any, optional
const STYPE=0, PTYPE=1, ATYPE=2, OTYPE=3;
// Char Codes ~> / : *
const SLASH=47, COLON=58, ASTER=42, QMARK=63;
function strip(str) {
if (str === SEP) return str;
(str.charCodeAt(0) === SLASH) && (str=str.substring(1));
var len = str.length - 1;
return str.charCodeAt(len) === SLASH ? str.substring(0, len) : str;
}
function split(str) {
return (str=strip(str)) === SEP ? [SEP] : str.split(SEP);
}
function isMatch(arr, obj, idx) {
idx = arr[idx];
return (obj.val === idx && obj.type === STYPE) || (idx === SEP ? obj.type > PTYPE : obj.type !== STYPE && (idx || '').endsWith(obj.end));
}
export function match(str, all) {
var i=0, tmp, segs=split(str), len=segs.length, l;
var fn = isMatch.bind(isMatch, segs);
for (; i < all.length; i++) {
tmp = all[i];
if ((l=tmp.length) === len || (l < len && tmp[l-1].type === ATYPE) || (l > len && tmp[l-1].type === OTYPE)) {
if (every(tmp, fn)) return tmp;
}
}
return [];
}
export function parse(str) {
if (str === SEP) {
return [{ old:str, type:STYPE, val:str, end:'' }];
}
var c, x, t, sfx, nxt=strip(str), i=-1, j=0, len=nxt.length, out=[];
while (++i < len) {
c = nxt.charCodeAt(i);
if (c === COLON) {
j = i + 1; // begining of param
t = PTYPE; // set type
x = 0; // reset mark
sfx = '';
while (i < len && nxt.charCodeAt(i) !== SLASH) {
c = nxt.charCodeAt(i);
if (c === QMARK) {
x=i; t=OTYPE;
} else if (c === 46 && sfx.length === 0) {
sfx = nxt.substring(x=i);
}
i++; // move on
}
out.push({
old: str,
type: t,
val: nxt.substring(j, x||i),
end: sfx
});
// shorten string & update pointers
nxt=nxt.substring(i); len-=i; i=0;
continue; // loop
} else if (c === ASTER) {
out.push({
old: str,
type: ATYPE,
val: nxt.substring(i),
end: ''
});
continue; // loop
} else {
j = i;
while (i < len && nxt.charCodeAt(i) !== SLASH) {
++i; // skip to next slash
}
out.push({
old: str,
type: STYPE,
val: nxt.substring(j, i),
end: ''
});
// shorten string & update pointers
nxt=nxt.substring(i); len-=i; i=j=0;
}
}
return out;
}
export function exec(str, arr) {
var i=0, x, y, segs=split(str), out={};
for (; i < arr.length; i++) {
x=segs[i]; y=arr[i];
if (x === SEP) continue;
if (x !== void 0 && y.type | 2 === OTYPE) {
out[ y.val ] = x.replace(y.end, '');
}
}
return out;
}
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