sbbs/mods/load/texfuncs.js
2019-10-09 10:22:38 +11:00

115 lines
2.5 KiB
JavaScript

if (!String.prototype.repeat) {
String.prototype.repeat = function(count) {
'use strict';
if (this == null) {
throw new TypeError('can\'t convert ' + this + ' to object');
}
var str = '' + this;
count = +count;
if (count != count) {
count = 0;
}
if (count < 0) {
throw new RangeError('repeat count must be non-negative');
}
if (count == Infinity) {
throw new RangeError('repeat count must be less than infinity');
}
count = Math.floor(count);
if (str.length == 0 || count == 0) {
return '';
}
// Ensuring count is a 31-bit integer allows us to heavily optimize the
// main part. But anyway, most current (August 2014) browsers can't handle
// strings 1 << 28 chars or longer, so:
if (str.length * count >= 1 << 28) {
throw new RangeError('repeat count must not overflow maximum string size');
}
var rpt = '';
for (;;) {
if ((count & 1) == 1) {
rpt += str;
}
count >>>= 1;
if (count == 0) {
break;
}
str += str;
}
return rpt;
};
}
function cursorOff() {
ansiterm.send('ext_mode','clear','cursor');
console.gotoxy(0,24);
}
/**
* Return an argument from argv, or an error if it doesnt exit
*
* @param key
* @param error
*/
function getArg(key,error,abort) {
index = argv.indexOf(key);
if ((index !== -1) && (! (argv[index+1] === undefined || argv[index+1].match(/^-/)))) {
return argv[index+1];
}
if (abort) {
log(LOG_ERROR,error);
exit(1);
}
}
function getFrame(page) {
if (! page.index)
page.index = 'a';
// @todo Need to filter out SAUCE
f = new File(system.text_dir+'ansitex/'+pageStr(page)+'.tex');
if (! f.exists || ! f.open('r')) {
return null;
}
try {
frame = JSON.parse(f.read());
x = new Frame(0);
frame.render = x.render;
// @todo Figure out how to delete this duplicate code
Object.defineProperty(frame,'page', {
get: function() {return this.frame+this.index}
});
} catch (error) {
log(LOG_ERROR,error);
return null;
}
log(LOG_DEBUG,'Loaded frame: ['+frame.frame+']['+frame.index+'] ('+frame.page+')');
return frame;
}
/**
* Return the frame as a string
*/
function pageStr(page) {
if (! page.index)
page.index = 'a';
return page.frame+page.index;
}
function sendBaseline(text,reposition) {
console.pushxy();
console.gotoxy(0,24);
console.print(text);
console.cleartoeol();
if (! reposition) {
console.popxy();
}
}