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'use strict';
module.exports = function addcslashes(str, charlist) {
// discuss at: http://locutus.io/php/addcslashes/
// original by: Brett Zamir (http://brett-zamir.me)
// note 1: We show double backslashes in the return value example
// note 1: code below because a JavaScript string will not
// note 1: render them as backslashes otherwise
// example 1: addcslashes('foo[ ]', 'A..z'); // Escape all ASCII within capital A to lower z range, including square brackets
// returns 1: "\\f\\o\\o\\[ \\]"
// example 2: addcslashes("zoo['.']", 'z..A'); // Only escape z, period, and A here since not a lower-to-higher range
// returns 2: "\\zoo['\\.']"
// _example 3: addcslashes("@a\u0000\u0010\u00A9", "\0..\37!@\177..\377"); // Escape as octals those specified and less than 32 (0x20) or greater than 126 (0x7E), but not otherwise
// _returns 3: '\\@a\\000\\020\\302\\251'
// _example 4: addcslashes("\u0020\u007E", "\40..\175"); // Those between 32 (0x20 or 040) and 126 (0x7E or 0176) decimal value will be backslashed if specified (not octalized)
// _returns 4: '\\ ~'
// _example 5: addcslashes("\r\u0007\n", '\0..\37'); // Recognize C escape sequences if specified
// _returns 5: "\\r\\a\\n"
// _example 6: addcslashes("\r\u0007\n", '\0'); // Do not recognize C escape sequences if not specified
// _returns 6: "\r\u0007\n"
var target = '';
var chrs = [];
var i = 0;
var j = 0;
var c = '';
var next = '';
var rangeBegin = '';
var rangeEnd = '';
var chr = '';
var begin = 0;
var end = 0;
var octalLength = 0;
var postOctalPos = 0;
var cca = 0;
var escHexGrp = [];
var encoded = '';
var percentHex = /%([\dA-Fa-f]+)/g;
var _pad = function _pad(n, c) {
if ((n = n + '').length < c) {
return new Array(++c - n.length).join('0') + n;
}
return n;
};
for (i = 0; i < charlist.length; i++) {
c = charlist.charAt(i);
next = charlist.charAt(i + 1);
if (c === '\\' && next && /\d/.test(next)) {
// Octal
rangeBegin = charlist.slice(i + 1).match(/^\d+/)[0];
octalLength = rangeBegin.length;
postOctalPos = i + octalLength + 1;
if (charlist.charAt(postOctalPos) + charlist.charAt(postOctalPos + 1) === '..') {
// Octal begins range
begin = rangeBegin.charCodeAt(0);
if (/\\\d/.test(charlist.charAt(postOctalPos + 2) + charlist.charAt(postOctalPos + 3))) {
// Range ends with octal
rangeEnd = charlist.slice(postOctalPos + 3).match(/^\d+/)[0];
// Skip range end backslash
i += 1;
} else if (charlist.charAt(postOctalPos + 2)) {
// Range ends with character
rangeEnd = charlist.charAt(postOctalPos + 2);
} else {
throw new Error('Range with no end point');
}
end = rangeEnd.charCodeAt(0);
if (end > begin) {
// Treat as a range
for (j = begin; j <= end; j++) {
chrs.push(String.fromCharCode(j));
}
} else {
// Supposed to treat period, begin and end as individual characters only, not a range
chrs.push('.', rangeBegin, rangeEnd);
}
// Skip dots and range end (already skipped range end backslash if present)
i += rangeEnd.length + 2;
} else {
// Octal is by itself
chr = String.fromCharCode(parseInt(rangeBegin, 8));
chrs.push(chr);
}
// Skip range begin
i += octalLength;
} else if (next + charlist.charAt(i + 2) === '..') {
// Character begins range
rangeBegin = c;
begin = rangeBegin.charCodeAt(0);
if (/\\\d/.test(charlist.charAt(i + 3) + charlist.charAt(i + 4))) {
// Range ends with octal
rangeEnd = charlist.slice(i + 4).match(/^\d+/)[0];
// Skip range end backslash
i += 1;
} else if (charlist.charAt(i + 3)) {
// Range ends with character
rangeEnd = charlist.charAt(i + 3);
} else {
throw new Error('Range with no end point');
}
end = rangeEnd.charCodeAt(0);
if (end > begin) {
// Treat as a range
for (j = begin; j <= end; j++) {
chrs.push(String.fromCharCode(j));
}
} else {
// Supposed to treat period, begin and end as individual characters only, not a range
chrs.push('.', rangeBegin, rangeEnd);
}
// Skip dots and range end (already skipped range end backslash if present)
i += rangeEnd.length + 2;
} else {
// Character is by itself
chrs.push(c);
}
}
for (i = 0; i < str.length; i++) {
c = str.charAt(i);
if (chrs.indexOf(c) !== -1) {
target += '\\';
cca = c.charCodeAt(0);
if (cca < 32 || cca > 126) {
// Needs special escaping
switch (c) {
case '\n':
target += 'n';
break;
case '\t':
target += 't';
break;
case '\r':
target += 'r';
break;
case '\x07':
target += 'a';
break;
case '\v':
target += 'v';
break;
case '\b':
target += 'b';
break;
case '\f':
target += 'f';
break;
default:
// target += _pad(cca.toString(8), 3);break; // Sufficient for UTF-16
encoded = encodeURIComponent(c);
// 3-length-padded UTF-8 octets
if ((escHexGrp = percentHex.exec(encoded)) !== null) {
// already added a slash above:
target += _pad(parseInt(escHexGrp[1], 16).toString(8), 3);
}
while ((escHexGrp = percentHex.exec(encoded)) !== null) {
target += '\\' + _pad(parseInt(escHexGrp[1], 16).toString(8), 3);
}
break;
}
} else {
// Perform regular backslashed escaping
target += c;
}
} else {
// Just add the character unescaped
target += c;
}
}
return target;
};
//# sourceMappingURL=addcslashes.js.map
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