@hms-networks/kolibri-js-core
Version:
Kolibri Core library containing common kolibri models and utils
309 lines (301 loc) • 11.5 kB
JavaScript
/* eslint-disable @typescript-eslint/no-shadow */
/* eslint-disable max-len */
/*==============================================================================
COPYRIGHT NOTIFICATION (c) 2014-2019 Beck IPC GmbH
COPYRIGHT NOTIFICATION (c) 2019 HMS Industrial Networks AB
==============================================================================
Module:
sprintf
Function:
JavaScript sprintf implementation for the Kolibri platform.
Modified version of sprintf-js by Alexandru Marasteanu
(https:github.com/alexei/sprintf.js.git).
License:
Copyright (c) 2007-2013, Alexandru Marasteanu <hello [at) alexei (dot] ro>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of this software nor the names of its contributors may be
used to endorse or promote products derived from this software without
specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
==============================================================================
*/
var re = {
not_string: /[^s]/,
number: /[def]/,
text: /^[^\x25]+/,
modulo: /^\x25{2}/,
placeholder: /^\x25(?:([1-9]\d*)\$|\(([^)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?(?:\[([^)]+)\])?([b-fostuxX])/,
key: /^([a-z_][a-z_\d]*)/i,
key_access: /^\.([a-z_][a-z_\d]*)/i,
index_access: /^\[(\d+)\]/,
sign: /^[+-]/
};
export function sprintf() {
var args = [];
for (var _i = 0; _i < arguments.length; _i++) {
args[_i] = arguments[_i];
}
var key = args[0];
var cache = sprintf.cache;
if (!(cache[key] && cache.hasOwnProperty(key))) {
cache[key] = sprintf.parse(key);
}
return sprintf.format.call(null, cache[key], args);
}
sprintf.format = function (parseTree, argv) {
var cursor = 1;
var treeLen = parseTree.length;
var nodeType = '';
var arg;
var output = [];
var i, k, match, pad, padChar, padLen;
var isPositive = true;
var sign = '';
for (i = 0; i < treeLen; i++) {
nodeType = getType(parseTree[i]);
if (nodeType === 'string') {
output[output.length] = parseTree[i];
}
else if (nodeType === 'array') {
match = parseTree[i]; // convenience purposes only
if (match[2]) {
// keyword argument
arg = argv[cursor];
for (k = 0; k < match[2].length; k++) {
if (!arg.hasOwnProperty(match[2][k])) {
throw new Error(sprintf('[sprintf] property "%s" does not exist', match[2][k]));
}
arg = arg[match[2][k]];
}
}
else if (match[1]) {
// positional argument (explicit)
arg = argv[match[1]];
}
else {
// positional argument (implicit)
arg = argv[cursor++];
}
if (getType(arg) === 'function') {
arg = arg();
}
if (re.not_string.test(match[9]) && (getType(arg) !== 'number' && isNaN(arg))) {
throw new TypeError(sprintf('[sprintf] expecting number but found %s', getType(arg)));
}
if (re.number.test(match[9])) {
isPositive = arg >= 0;
}
switch (match[9]) {
case 'b':
arg = arg.toString(2);
break;
case 'd':
arg = parseInt(arg, 10);
break;
case 'e':
arg = match[7] ? arg.toExponential(match[7]) : arg.toExponential();
break;
case 'f':
arg = match[7] ? parseFloat(arg).toFixed(match[7]) : parseFloat(arg);
break;
case 'o':
arg = arg.toString(8);
break;
case 's':
arg = (arg = String(arg)) && match[7] ? arg.substring(0, match[7]) : arg;
break;
case 'u':
arg = arg >>> 0;
break;
case 'x':
arg = arg.toString(16);
break;
case 'X':
arg = arg.toString(16).toUpperCase();
break;
case 't':
if (match[8]) {
arg = formatTimestamp(parseInt(arg, 10), match[8]);
}
else {
arg = formatTimestamp(parseInt(arg, 10), null);
arg =
(arg = String(arg)) && match[7] ? arg.substring(0, match[7]) : arg;
}
break;
}
if (!isPositive || (re.number.test(match[9]) && match[3])) {
sign = isPositive ? '+' : '-';
arg = arg.toString().replace(re.sign, '');
}
padChar = match[4] ? (match[4] === '0' ? '0' : match[4].charAt(1)) : ' ';
padLen = match[6] - (sign + arg).length;
pad = match[6] ? stringRepeat(padChar, padLen) : '';
output[output.length] = match[5]
? sign + arg + pad
: padChar === '0' ? sign + pad + arg : pad + sign + arg;
}
}
return output.join('');
};
sprintf.cache = {};
sprintf.parse = function (fmt) {
var _fmt = fmt;
var match = [];
var parseTree = [];
var argNames = 0;
while (_fmt) {
if ((match = re.text.exec(_fmt)) !== null) {
parseTree[parseTree.length] = match[0];
}
else if ((match = re.modulo.exec(_fmt)) !== null) {
parseTree[parseTree.length] = '%';
}
else if ((match = re.placeholder.exec(_fmt)) !== null) {
if (match[2]) {
argNames |= 1;
var fieldList = [];
var replacementField = match[2];
var fieldMatch = [];
if ((fieldMatch = re.key.exec(replacementField)) !== null) {
fieldList[fieldList.length] = fieldMatch[1];
while ((replacementField = replacementField.substring(fieldMatch[0].length)) !== '') {
if ((fieldMatch = re.key_access.exec(replacementField)) !== null) {
fieldList[fieldList.length] = fieldMatch[1];
}
else if ((fieldMatch = re.index_access.exec(replacementField)) !== null) {
fieldList[fieldList.length] = fieldMatch[1];
}
else {
throw new SyntaxError('[sprintf] failed to parse named argument key');
}
}
}
else {
throw new SyntaxError('[sprintf] failed to parse named argument key');
}
match[2] = fieldList;
}
else {
argNames |= 2;
}
if (argNames === 3) {
throw new Error('[sprintf] mixing positional and named placeholders is not (yet) supported');
}
parseTree[parseTree.length] = match;
}
else {
throw new SyntaxError('[sprintf] unexpected placeholder');
}
_fmt = _fmt.substring(match[0].length);
}
return parseTree;
};
export function vsprintf(fmt, argv, _argv) {
_argv = (argv || []).slice(0);
_argv.splice(0, 0, fmt);
return sprintf.apply(null, _argv);
}
;
/**
* helpers
*/
function getType(variable) {
return Object.prototype.toString.call(variable).slice(8, -1).toLowerCase();
}
function stringRepeat(input, multiplier) {
return new Array(multiplier + 1).join(input);
}
function pad(n) {
return n < 10 ? '0' + n : n;
}
function formatTimestamp(timestamp, flags) {
var date = new Date(timestamp);
if (!flags) {
flags = 'Y-m-d H:M:S';
}
var result = '';
for (var i = 0; i < flags.length; i++) {
switch (flags.charAt(i)) {
case 'Y':
result = result + date.getUTCFullYear();
break;
case 'C':
result = result + pad(date.getUTCFullYear() % 100);
break;
case 'H':
result = result + pad(date.getUTCHours());
break;
case 'I':
var hh = date.getUTCHours();
hh = hh > 12 ? hh - 12 : hh;
hh = hh === 0 ? 12 : hh;
result = result + pad(hh);
break;
case 'M':
result = result + pad(date.getUTCMinutes());
break;
case 'S':
result = result + pad(date.getUTCSeconds());
break;
case 'p':
result = result + (date.getUTCHours() < 12 ? 'AM' : 'PM');
break;
case 'm':
result = result + pad(date.getUTCMonth() + 1);
break;
case 'd':
result = result + pad(date.getUTCDate());
break;
case 'a':
var weekday = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
result = result + weekday[date.getUTCDay()];
break;
case 'h':
var months = [
'Jan',
'Feb',
'Mar',
'Apr',
'May',
'Jun',
'Jul',
'Aug',
'Sep',
'Oct',
'Nov',
'Dec'
];
result = result + months[date.getUTCMonth()];
break;
case ':':
case '.':
case ',':
case '-':
case '/':
case ' ':
result = result + flags.charAt(i);
break;
default:
throw new SyntaxError('Error parsing time format at ' + flags.charAt(i));
}
}
return result;
}
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