createQueryPattern

createQueryPattern.js

var urlPatterns = createQueryPattern('http://hogehoge/',[
        'a=1',
        'b=2',
        'c=3',
        'd=4',
        'e=5',
        'f=6'
    ]);
console.dir(urlPatterns);

function createQueryPattern(baseUrl, pattern) {
    var i, iz, j, jz, tmp, allUrlPattern = [], 
        cutStart, cutEnd, cutLen,
        minusCutStart, minusCutLen;
        
    allUrlPattern.push(baseUrl + '?' +  pattern.join('&'));
    for (i = 0, iz = pattern.length; i < iz; i++) {
        for (j = 0, jz = pattern.length; j < jz; j++) {
            tmp = pattern.slice();
            cutStart = (iz - 1) - (j + i);
            cutEnd = (iz - 1) - i;
            cutLen = cutEnd - cutStart + 1;

            if (cutStart < 0) {
                minusCutStart = jz - (-1 * cutStart);
                minusCutLen = jz - minusCutStart;
                
                tmp.splice(minusCutStart, minusCutLen);
                cutStart = 0;
                cutLen = cutLen - minusCutLen;
            }
            
            tmp.splice(cutStart, cutLen);

            if (tmp.length) {
                allUrlPattern.push(baseUrl + '?' + tmp.join('&'));
            }
        }
    }
    return allUrlPattern;
}