70 lines
1.7 KiB
JavaScript
70 lines
1.7 KiB
JavaScript
'use strict';
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var singleComment = 1;
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var multiComment = 2;
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function stripWithoutWhitespace() {
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return '';
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}
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function stripWithWhitespace(str, start, end) {
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return str.slice(start, end).replace(/\S/g, ' ');
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}
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module.exports = function (str, opts) {
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opts = opts || {};
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var currentChar;
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var nextChar;
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var insideString = false;
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var insideComment = false;
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var offset = 0;
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var ret = '';
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var strip = opts.whitespace === false ? stripWithoutWhitespace : stripWithWhitespace;
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for (var i = 0; i < str.length; i++) {
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currentChar = str[i];
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nextChar = str[i + 1];
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if (!insideComment && currentChar === '"') {
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var escaped = str[i - 1] === '\\' && str[i - 2] !== '\\';
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if (!escaped) {
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insideString = !insideString;
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}
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}
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if (insideString) {
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continue;
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}
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if (!insideComment && currentChar + nextChar === '//') {
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ret += str.slice(offset, i);
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offset = i;
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insideComment = singleComment;
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i++;
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} else if (insideComment === singleComment && currentChar + nextChar === '\r\n') {
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i++;
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insideComment = false;
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ret += strip(str, offset, i);
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offset = i;
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continue;
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} else if (insideComment === singleComment && currentChar === '\n') {
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insideComment = false;
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ret += strip(str, offset, i);
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offset = i;
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} else if (!insideComment && currentChar + nextChar === '/*') {
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ret += str.slice(offset, i);
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offset = i;
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insideComment = multiComment;
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i++;
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continue;
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} else if (insideComment === multiComment && currentChar + nextChar === '*/') {
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i++;
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insideComment = false;
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ret += strip(str, offset, i + 1);
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offset = i + 1;
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continue;
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}
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}
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return ret + (insideComment ? strip(str.substr(offset)) : str.substr(offset));
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};
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