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json_minify.js
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json_minify.js
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/*! JSON.minify()
v0.1 (c) Kyle Simpson
MIT License
*/
if (typeof JSON == "undefined" || !JSON) {
JSON = {};
}
JSON.minify = function(json) {
var tokenizer = /"|(\/\*)|(\*\/)|(\/\/)|\n|\r/g,
in_string = false,
in_multiline_comment = false,
in_singleline_comment = false,
tmp, tmp2, new_str = [], ns = 0, from = 0, lc, rc
;
tokenizer.lastIndex = 0;
while (tmp = tokenizer.exec(json)) {
lc = RegExp.leftContext;
rc = RegExp.rightContext;
if (!in_multiline_comment && !in_singleline_comment) {
tmp2 = lc.substring(from);
if (!in_string) {
tmp2 = tmp2.replace(/(\n|\r|\s)*/g,"");
}
new_str[ns++] = tmp2;
}
from = tokenizer.lastIndex;
if (tmp[0] == "\"" && !in_multiline_comment && !in_singleline_comment) {
tmp2 = lc.match(/(\\)*$/);
if (!in_string || !tmp2 || (tmp2[0].length % 2) == 0) { // start of string with ", or unescaped " character found to end string
in_string = !in_string;
}
from--; // include " character in next catch
rc = json.substring(from);
}
else if (tmp[0] == "/*" && !in_string && !in_multiline_comment && !in_singleline_comment) {
in_multiline_comment = true;
}
else if (tmp[0] == "*/" && !in_string && in_multiline_comment && !in_singleline_comment) {
in_multiline_comment = false;
}
else if (tmp[0] == "//" && !in_string && !in_multiline_comment && !in_singleline_comment) {
in_singleline_comment = true;
}
else if ((tmp[0] == "\n" || tmp[0] == "\r") && !in_string && !in_multiline_comment && in_singleline_comment) {
in_singleline_comment = false;
}
else if (!in_multiline_comment && !in_singleline_comment && !(/\n|\r|\s/.test(tmp[0]))) {
new_str[ns++] = tmp[0];
}
}
new_str[ns++] = rc;
return new_str.join("");
};