362 lines
9.1 KiB
JavaScript
362 lines
9.1 KiB
JavaScript
/**
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* ANSItex definitions
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*/
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var ACTION_RELOAD =1; /* Reload the current frame */
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var ACTION_GOTO =2; /* Goto a specific frame */
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var ACTION_BACKUP =3; /* Goto previous frame */
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var ACTION_NEXT =4; /* Goto next frame */
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var ACTION_TERMINATE =5; /* Terminate the session */
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var ACTION_SUBMITRF =6; /* Submit form contents */
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var ACTION_STAR =7; /* Star command entry */
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var MODE_BL =1; /* Typing * command on baseline */
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var FRAME_LENGTH =22; /* Length of a frame */
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var FRAME_WIDTH =80; /* Width of a frame */
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var FRAME_HEADER =56; /* Size of page owner (length) */
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var FRAME_PAGENUM =12; /* Size of page number (length with a-z) */
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var FRAME_COST = 9; /* Size of cost (length without unit) */
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var FRAME_COSTUNIT ='c'; /* Unit of cost */
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var FRAME_TYPE_INFO ='i';
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var FRAME_TYPE_TERMINATE ='t';
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var FRAME_TYPE_EXTERNAL ='x';
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var FRAME_TYPE_RESPONSE ='r';
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var FRAME_TYPE_LOGIN ='l';
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var ERR_NOT_IMPLEMENTED ='\1RNOT IMPLEMENTED YET?';
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var ERR_ROUTE ='\1n\1h\1WMISTAKE? \1GTRY AGAIN OR TELL US ON *08';
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var NO_HISTORY_FRAMES =['98b'];
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// Our frame object
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function Frame() {
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this.version=1;
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this.frame=null;
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this.index=null;
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this.owner=''; // @todo
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this.cost=0; // @todo
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this.content='';
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this.isPublic=false; // @todo
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this.isAccessible=false; // @todo
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this.type = FRAME_TYPE_INFO;
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this.key=[ null,null,null,null,null,null,null,null,null,null ];
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// Initialise frame array
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/*
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this.frame_data = {};
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this.frame_content = {};
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for(x=0;x<FRAME_LENGTH;x++)
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{
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this.frame_data[x] = {};
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this.frame_content[x] = {};
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}
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*/
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this.frame_fields = [];
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this.raw=function() {
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return base64_decode(this.content).replace(/(\r\n|\n|\r)/gm,'');
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};
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this.render=function(withHeader) {
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owner = base64_decode(this.owner);
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header = '\n\r';
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if (this.type != FRAME_TYPE_LOGIN) {
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header = '\1n'+owner+' '.repeat(FRAME_HEADER-console.strlen(owner))+'\1n '+
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'\1W\1H'+this.page+' '.repeat(FRAME_PAGENUM-this.page.length)+' '+
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'\1G\1H'+' '.repeat(FRAME_COST-this.cost.toString().length)+this.cost+FRAME_COSTUNIT+
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(console.screen_columns > 80 ? '\n\r' : '');
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}
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if ((this.type == FRAME_TYPE_LOGIN) || (this.type == FRAME_TYPE_RESPONSE)) {
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return header+this.parse(this.content);
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} else {
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return header+this.content;
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}
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};
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Object.defineProperty(this,'page', {
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get: function() {
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if (this.frame == null || this.index == null) return null;
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return this.frame+this.index;
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}
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});
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Object.defineProperty(this,'fields', {
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get: function() {
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return this.frame_fields;
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}
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});
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}
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// Load a frame from disk (.tex file)
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Frame.prototype.load = function(filename) {
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log(LOG_DEBUG,'Loading frame from: '+filename);
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f = new File(system.mods_dir+'ansitex/text/'+filename+'.tex');
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if (! f.exists || ! f.open('r')) {
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return null;
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}
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try {
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load = JSON.parse(f.read());
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for (property in load) {
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this[property] = load[property];
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}
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this.content = base64_decode(this.content);
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} catch (error) {
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log(LOG_ERROR,'Frame error: '+error);
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return null;
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}
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log(LOG_DEBUG,'Loaded frame: ['+this.frame+']['+this.index+'] ('+this.page+')');
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};
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/**
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* Parse the page text, and return the frame as 2 arrays:
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* + First array is all the characters and the position on the frame
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* + Second array is the array of the control codes that changes the color of the character
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*
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* The purpose of this function is to convert any special char sequences there are interpreted directly by Ansitex
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* Currently they are:
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* + ESC _ <value>[;value] ESC \
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*
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* Additionally, for response frames, if the cursor is moved to a field, its to determine what attributes (eg: color)
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* should apply for that field.
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*
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* @param text
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*/
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Frame.prototype.parse = function(text) {
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var c = 1; // column
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var r = 1; // row
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var output = '';
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// Default Attributes
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f = 39;
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b = 49;
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i = 0;
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for(p=0;p<text.length;p++) {
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// Look for a special character until the end of the frame width
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cte = (r*FRAME_WIDTH - ((r-1)*FRAME_WIDTH+c));
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match = text.substr(p,cte).match(/[\r\n\x1b]/);
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log(LOG_DEBUG,'SPECIAL CHAR ['+r+'x'+c+'] ['+p+'-'+cte+'] for: '+match);
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if (match == null || match.index) {
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advance = match ? match.index : cte;
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log(LOG_DEBUG,'INCLUDE: '+text.substr(p,advance));
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output += text.substr(p,advance);
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p += advance;
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c += advance;
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advance = 0;
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}
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// If the frame is not big enough, fill it with spaces.
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byte = text.charAt(p);
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advance = 0;
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switch (byte) {
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// Carriage Return
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case '\r':
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log(LOG_DEBUG,'CR');
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c=1;
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break;
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// New line
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case '\n':
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log(LOG_DEBUG,'LF');
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r++;
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break;
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// ESC
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case KEY_ESC:
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advance = 1;
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// Is the next byte something we know about
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nextbyte = text.charAt(p+advance);
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log(LOG_DEBUG,'ESC ['+r+'x'+c+'] NEXT: '+nextbyte);
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switch (nextbyte) {
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// CSI
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case '[':
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advance++;
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chars = '';
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// Find our end CSI param in the next 50 chars
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matches = text.substr(p+advance,50).match(/([0-9]+[;]?)+([a-zA-Z])/);
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log(LOG_DEBUG,'CSI ['+r+'x'+c+'] ADVANCE: '+advance+', MATCHES: '+matches+', STRING: '+text.substr(p+advance,50));
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if (! matches) {
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chars += nextbyte;
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break;
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}
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advance += matches[0].length-1;
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chars += nextbyte+matches[0];
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log(LOG_DEBUG,'CSI ['+r+'x'+c+'] ADVANCE: '+advance+', CHARS: '+chars+', CHARSLEN: '+chars.length);
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switch (matches[2]) {
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// Color CSIs
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case 'm':
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log(LOG_DEBUG,'CSI m ['+r+'x'+c+'] MATCHES: '+matches[0]+', LENGTH : '+matches[0].length);
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csi = matches[0].substr(0,matches[0].length-1).split(';');
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var num = null;
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for (num in csi) {
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log(LOG_DEBUG,'CSI m ['+r+'x'+c+'] NUM: '+num+', CSI: '+csi[num]);
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// Intensity
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if (csi[num] >= 0 && csi[num] <= 8) {
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i = csi[num];
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f = 39;
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b = 49;
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// Forground Color
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} else if (csi[num] >= 30 && csi[num] <= 39) {
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f = csi[num];
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// Background Color
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} else if (csi[num] >= 40 && csi[num] <= 49) {
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b = num;
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}
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}
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break;
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// Advance characters
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case 'C':
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log(LOG_DEBUG,'CSI C ['+r+'x'+c+'] CHARS: '+matches[1]);
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c += parseInt(matches[1]); // Advance our position
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break;
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default:
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dump('? CSI: '.matches[2]);
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}
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break;
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case ' ':
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log(LOG_DEBUG,'LOOSE ESC? ['+r+'x'+c+'] '+advance);
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break;
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// SOS
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case '_':
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log(LOG_DEBUG,'SOS ['+r+'x'+c+'] '+advance);
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advance++;
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// Find our end ST param in the next 50 chars
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matches = text.substr(p+advance,50).match(/(([A-Z]+;[0-9a-z]+)([;]?.+)?)\x1b\\/);
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log(LOG_DEBUG,'SOS ['+r+'x'+c+'] ADVANCE: '+advance+', MATCHES: '+matches+', LENGTH: '+matches[0].length+', STRING: '+text.substr(p+advance,50));
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if (! matches) {
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chars += nextbyte;
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break;
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}
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advance += matches[0].length-1;
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// The last 2 chars of matches[0] are the ESC \
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sos = matches[0].substr(0,matches[0].length-2).split(';');
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log(LOG_DEBUG,'SOS ['+r+'x'+c+'] ADVANCE: '+advance+', SOS: '+sos);
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var num = null;
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var fieldlen = null;
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for (num in sos) {
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log(LOG_DEBUG,'SOS ['+r+'x'+c+'] NUM: '+num+', SOS: '+sos[num]);
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switch (num) {
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// First value is the field name
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case '0':
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field = sos[num];
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break;
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// Second value is the length/type of the field
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case '1':
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x = sos[num].match(/([0-9]+)([a-z])/);
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if (! x) {
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log(LOG_ERROR,'SOS FAILED PARSING FIELD LENGTH/TYPE. ['+r+'x'+c+'] '+sos[num]);
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break;
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}
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log(LOG_DEBUG,'SOS ['+r+'x'+c+'] NUM CHARS: '+x[1]+', TYPE: '+x[2]);
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fieldlen = x[1];
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fieldtype = x[2];
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break;
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// Third field is the char to to use
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case '2':
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fieldchar = sos[num];
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break;
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default:
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log(LOG_ERROR,'IGNORING ADITIONAL SOS FIELDS. ['+r+'x'+c+'] '+sos[num]);
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}
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}
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if (fieldlen) {
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chars = fieldchar.repeat(fieldlen);
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}
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byte = '';
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this.frame_fields.push({
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type: fieldtype,
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length: fieldlen,
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r: r,
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c: c,
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attribute: {i:i,f:f,b:b},
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});
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log(LOG_DEBUG,'SOS Field found at ['+r+'x'+(c-1)+'], Type: '+fieldtype+', Length: '+fieldlen+', Attrs: '+JSON.stringify({i:i,f:f,b:b}));
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break;
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default:
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log(LOG_DEBUG,'DEFAULT ['+r+'x'+c+'] '+advance);
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}
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break;
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default:
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//this.frame_data[r][c] = {i:i,f:f,b:b};
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//this.frame_content[r][c] = byte;
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log(LOG_DEBUG,'ADD OUTPUT ['+r+'x'+c+'] for: '+byte);
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c++;
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}
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output += byte;
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if (advance) {
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log(LOG_DEBUG,'ADVANCE P ['+r+'x'+c+'] '+advance+', NEXT CHAR: '+text.charAt(p+advance)+' ('+text.charCodeAt(p+advance)+')');
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output += chars;
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p += advance;
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}
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if (c>FRAME_WIDTH) {
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c = 1;
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r++;
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}
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// @todo - If we are longer than FRAME_LENGTH, move the output into the next frame.
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if (r>FRAME_LENGTH) {
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break;
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}
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// Debugging
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if (false && r > 3) {
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console.write(output);
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bbs.hangup();
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exit(1);
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}
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}
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return output;
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}; |