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hackmudiffy.js
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hackmudiffy.js
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"use strict";
// license: CC0
function _formatHackmudArgs(args,allowScriptor=true) { // leading space, no trailing space
if(Array.isArray(args)) {
var s=' [';
for(var i=0;i<args.length;++i) {
if(i)
s+=',';
s+=_formatHackmudArgs(args[i]);
}
s+=' ]';
return s;
}
if(typeof args=='object') {
if(!args)return ' null';
if(allowScriptor && Object.keys(args).length==1 && typeof args.__scriptor=='string' && /^[a-z_][a-z_0-9]*\.[a-z_][a-z_0-9]*$/.test(args.__scriptor)) {
return ' #s.'+args.__scriptor;
}
var s=' {';
var first=true;
for(var i in args) {
if(!first)
s+=',';
first=false;
if(/[a-zA-Z0-9_]/.test(i)) {
s+=' '+i;
}
else {
s+=' "'+i.replace(/"/g,'\\"')+'"';
}
s+=':'+_formatHackmudArgs(args[i]);
}
s+=' }';
return s;
}
if(typeof args=='string')
return ' "'+args.replace(/"/g,'\\"')+'"';
return ' '+args.toString();
}
function formatHackmudArgs(script,args) {
var ret='>>'+script;
if(args) {
ret+=_formatHackmudArgs(args,false); // false to stop top-level scriptor expansion; recursive calls will expand.
}
return ret;
}
function _formatHackmudOutput(s,handleOKs) {
if(typeof s=='string')return s;
if(Array.isArray(s))
return s.map(o=>_formatHackmudOutput(o,false)).join('\n');
if(typeof s=='object' && s!==null) {
if(handleOKs && typeof s.ok=='boolean') {
var k=Object.keys(s);
if(k.length>2 || (k.length==2 && !('msg' in s)))return _formatHackmudOutput(s,false);
var pre=s.ok===true?'`LSuccess`':'`DFailure`';
if(s.msg)
pre+='\n'+_formatHackmudOutput(s.msg);
return pre;
}
s=JSON.stringify(s,0,2).replace(/^( *)"([a-z0-9A-Z_]+)":/gm,'$1$2:')
return s;
}
if(s===null || s===undefined)return '';
return s.toString();
}
// handleOKs: whether {ok:true} (and friends) should render as Success/Failure (true), or as objects (false).
function formatHackmudOutput(s,handleOKs) {
return _formatHackmudOutput(s,handleOKs).replace(/\t/g,' ');
}
function formatHackmud(script,args,output,handleOKs) {
return formatHackmudArgs(script,args)+'\n'+formatHackmudOutput(output,handleOKs);
}
module.exports={
formatHackmudArgs,
formatHackmudOutput,
formatHackmud
}