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Diffstat (limited to 'node_modules/locutus/php/strings/addcslashes.js')
| -rw-r--r-- | node_modules/locutus/php/strings/addcslashes.js | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/node_modules/locutus/php/strings/addcslashes.js b/node_modules/locutus/php/strings/addcslashes.js new file mode 100644 index 0000000..1518078 --- /dev/null +++ b/node_modules/locutus/php/strings/addcslashes.js @@ -0,0 +1,176 @@ +'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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