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