fs = require('fs');
module.exports = function(file_path, callback){
var insertTabs = function(num_tabs) {
var result = '';
for(var i = 0; i < num_tabs; i++){
result += '\t';
}
return result;
}
var emptyTabStack = function(tabStack){
var result = '';
while(tabStack.length > 0){
result += tabStack.pop();
}
return result;
}
var popTabStack = function(tabStack, current_line_num_tabs, previous_line_num_tabs){
var result = '';
for(var i = previous_line_num_tabs; i > current_line_num_tabs; i--){
result += tabStack.pop();
}
return result;
}
var parseFile = function(data, callback){
var previous_line = -1;
var lines = data.split('\n');
var html = '';
var tabStack = [];
lines.forEach(function(value, index){
if(value !== ''){
var split_value = value.split('\t');
var num_tabs = split_value.length - 1;
if(num_tabs > previous_line){
if(num_tabs > 0){
html += '\n' + insertTabs(num_tabs * 2 - 1) +'\n';
}
html += insertTabs(num_tabs * 2) + '';
var html_push_string = '\n' + insertTabs(num_tabs * 2) + '
';
if(num_tabs > 0){
html_push_string += '\n' + insertTabs(num_tabs * 2 - 1) + '';
}
tabStack.push(html_push_string);
}
else if(num_tabs < previous_line){
html += popTabStack(tabStack, num_tabs, previous_line);
}
html += '\n' + insertTabs(num_tabs * 2 + 1) +
'' + split_value[split_value.length - 1] + '';
previous_line = num_tabs;
}
});
html += emptyTabStack(tabStack);
callback(html);
}
//fs.readFile(process.argv[2], 'utf8', function(err, data){
fs.readFile(file_path, 'utf8', function(err, data){
if(err){
console.log(err);
} else {
parseFile(data, function(html){
//console.log('');
//console.log(html);
//console.log('');
var result = '';
result += html;
result += '';
callback(result);
});
}
});
};