SqlString.format = function(sql, values, timeZone) {
values = [].concat(values);
return sql.replace(/\?/g, function(match) {
if (!values.length) return match;
return SqlString.escape(values.shift(), timeZone);
});
};
SqlString.escape = function(val, timeZone) {
if (val === undefined || val === null) {
return 'NULL';
}
switch (typeof val) {
case 'boolean': return (val) ? 'true' : 'false';
case 'number': return val+'';
}
if (val instanceof Date) {
val = SqlString.dateToString(val, timeZone || "Z");
}
if (typeof Buffer !== 'undefined' && Buffer.isBuffer(val)) {
return SqlString.bufferToString(val);
}
if (_.isArray(val)) {
return SqlString.arrayToList(val, timeZone);
}
if (typeof val === 'object') val = val.toString();
val = val.replace(/[\0\n\r\b\t\\\'\"\x1a]/g, function(s) {
switch(s) {
case "\0": return "\\0";
case "\n": return "\\n";
case "\r": return "\\r";
case "\b": return "\\b";
case "\t": return "\\t";
case "\x1a": return "\\Z";
default: return "\\"+s;
}
});
return "'"+val+"'";
};
SqlString.arrayToList = function(array, timeZone) {
return array.map(function(v) {
if (Array.isArray(v)) return '(' + SqlString.arrayToList(v) + ')';
return SqlString.escape(v, true, timeZone);
}).join(', ');
};
SqlString.dateToString = function(date, timeZone) {
var dt = new Date(date);
if (timeZone != 'local') {
var tz = convertTimezone(timeZone);
dt.setTime(dt.getTime() + (dt.getTimezoneOffset() * 60000));
if (tz !== false) {
dt.setTime(dt.getTime() + (tz * 60000));
}
}
var year = dt.getFullYear();
var month = zeroPad(dt.getMonth() + 1);
var day = zeroPad(dt.getDate());
var hour = zeroPad(dt.getHours());
var minute = zeroPad(dt.getMinutes());
var second = zeroPad(dt.getSeconds());
return year + '-' + month + '-' + day + ' ' + hour + ':' + minute + ':' + second;
};
SqlString.bufferToString = function(buffer) {
var hex = '';
try {
hex = buffer.toString('hex');
} catch (err) {
SQL String