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parse.js
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parse.js
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"use strict";
var hex = function (c){
switch (c){
case "0": return 0;
case "1": return 1;
case "2": return 2;
case "3": return 3;
case "4": return 4;
case "5": return 5;
case "6": return 6;
case "7": return 7;
case "8": return 8;
case "9": return 9;
case "a": case "A": return 10;
case "b": case "B": return 11;
case "c": case "C": return 12;
case "d": case "D": return 13;
case "e": case "E": return 14;
case "f": case "F": return 15;
}
};
module.exports = function (data, options, handlers, control){
var c;
var escape;
var skipSpace = true;
var isCommentLine;
var isSectionLine;
var newLine = true;
var multiLine;
var isKey = true;
var key = "";
var value = "";
var section;
var unicode;
var unicodeRemaining;
var escapingUnicode;
var keySpace;
var sep;
var ignoreLine;
var line = function (){
if (key || value || sep){
handlers.line (key, value);
key = "";
value = "";
sep = false;
}
};
var escapeString = function (key, c){
if (escapingUnicode && unicodeRemaining){
unicode = (unicode<<4) + hex (c);
if (--unicodeRemaining) return key;
escape = false;
escapingUnicode = false;
return key + String.fromCharCode (unicode);
}
if (c === "u"){
unicode = 0;
escapingUnicode = true;
unicodeRemaining = 4;
return key;
}
escape = false;
if (c === "t") return key + "\t";
else if (c === "r") return key + "\r";
else if (c === "n") return key + "\n";
else if (c === "f") return key + "\f";
return key + c;
};
for (var i=0, ii=data.length; i<ii; i++){
if (control.abort) return;
c = data[i];
if (c === "\r") continue;
if (isCommentLine){
if (c === "\n"){
isCommentLine = false;
newLine = true;
skipSpace = true;
}
continue;
}
if (isSectionLine && c === "]"){
handlers.section (section);
//Ignore chars after the section in the same line
ignoreLine = true;
continue;
}
if (skipSpace){
if (c === " " || c === "\t" || c === "\f"){
continue;
}
if (!multiLine && c === "\n"){
//Empty line or key w/ separator and w/o value
isKey = true;
keySpace = false;
line ();
continue;
}
skipSpace = false;
multiLine = false;
}
if (newLine){
newLine = false;
if (c === "#" || c === "!" || options.comments[c]){
isCommentLine = true;
continue;
}
if (options.sections && c === "["){
section = "";
isSectionLine = true;
control.skipSection = false;
continue;
}
}
if (c !== "\n"){
if (control.skipSection || ignoreLine) continue;
if (!isSectionLine){
if (!escape && (c === "=" || c === ":" || options.separators[c])){
if (isKey){
//sep is needed to detect empty key and empty value with a
//non-whitespace separator
sep = true;
isKey = false;
keySpace = false;
//Skip whitespace between separator and value
skipSpace = true;
continue;
}
}
if (keySpace){
//Line with whitespace separator
keySpace = false;
isKey = false;
}
}
if (c === "\\"){
if (escape){
if (isSectionLine) section += "\\";
else if (isKey) key += "\\";
else value += "\\";
}
escape = !escape;
}else{
if (isSectionLine){
if (escape) section = escapeString (section, c);
else section += c;
}else if (isKey){
if (escape){
key = escapeString (key, c);
}else{
if (c === " " || c === "\t" || c === "\f"){
keySpace = true;
//Skip whitespace between key and separator
skipSpace = true;
continue;
}
key += c;
}
}else{
if (escape) value = escapeString (value, c);
else value += c;
}
}
}else{
if (escape){
escape = false;
skipSpace = true;
multiLine = true;
}else{
if (isSectionLine){
isSectionLine = false;
ignoreLine = false;
}
newLine = true;
skipSpace = true;
isKey = true;
line ();
}
}
}
line ();
};