jsl.format.js
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/*jslint white: true, devel: true, onevar: true, browser: true, undef: true, nomen: true, regexp: true, plusplus: false, bitwise: true, newcap: true, maxerr: 50, indent: 4 */
var jsl = typeof jsl === 'undefined' ? {} : jsl;
/**
* jsl.format - Provide json reformatting in a character-by-character approach, so that even invalid JSON may be reformatted (to the best of its ability).
*
**/
jsl.format = (function () {
function repeat(s, count) {
return new Array(count + 1).join(s);
}
function formatJson(json) {
var i = 0,
il = 0,
tab = " ",
newJson = "",
indentLevel = 0,
inString = false,
currentChar = null;
for (i = 0, il = json.length; i < il; i += 1) {
currentChar = json.charAt(i);
switch (currentChar) {
case '{':
case '[':
if (!inString) {
newJson += currentChar + "\n" + repeat(tab, indentLevel + 1);
indentLevel += 1;
} else {
newJson += currentChar;
}
break;
case '}':
case ']':
if (!inString) {
indentLevel -= 1;
newJson += "\n" + repeat(tab, indentLevel) + currentChar;
} else {
newJson += currentChar;
}
break;
case ',':
if (!inString) {
newJson += ",\n" + repeat(tab, indentLevel);
} else {
newJson += currentChar;
}
break;
case ':':
if (!inString) {
newJson += ": ";
} else {
newJson += currentChar;
}
break;
case ' ':
case "\n":
case "\t":
if (inString) {
newJson += currentChar;
}
break;
case '"':
if (i > 0 && json.charAt(i - 1) !== '\\') {
inString = !inString;
}
newJson += currentChar;
break;
default:
newJson += currentChar;
break;
}
}
return newJson;
}
return { "formatJson": formatJson };
}());