From e940f390e3d1d6ab01d01e054acd0677c4d9a2cd Mon Sep 17 00:00:00 2001
From: tilleul <fvlinden@gmail.com>
Date: Mon, 11 Sep 2017 21:59:58 +0200
Subject: [PATCH] Add files via upload

---
 renumber.js | 156 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 156 insertions(+)
 create mode 100644 renumber.js

diff --git a/renumber.js b/renumber.js
new file mode 100644
index 0000000..aef6766
--- /dev/null
+++ b/renumber.js
@@ -0,0 +1,156 @@
+var debug = false;
+
+if (process.argv.length<3 || process.argv.length>5) {
+	console.log();
+	console.log("                    ***************************************")
+	console.log("                    *  BASIC Applesoft RENUMBER (simple)  *");
+	console.log("                    ***************************************")
+	console.log();
+	console.log("Usage: node path/to/renumber.js path/to/basic/file [path/to/new/basic/file] [line_increment]");
+	console.log();
+	console.log("The file is supposed to contain BASIC APPLESOFT code (extracted with CiderPress for example)");
+	console.log("But it will certainly work with any other BASIC code.")
+	console.log("If omitted, new_basic_file will be the same as original with extension .new.xxx where xxx is original extension.")
+	console.log("If omitted, line_increment will be set to 10.");
+	console.log("Renumber does not work with GOTO/GOSUB VARIABLE");
+	console.log();
+	console.log("(c)- 2017 François Vander Linden - Licence is \"Do What The F*ck You Want (the asterisk is a 'U' in case you're wondering)\"");
+	
+	process.exit();
+}
+
+// https://stackoverflow.com/questions/10834796/validate-that-a-string-is-a-positive-integer
+var isNormalInteger = function (str) {
+    return /^\+?(0|[1-9]\d*)$/.test(str);
+}
+
+var fs  = require("fs");
+var inFile = process.argv[2];
+var outFile;
+var inc;
+var readlin = fs.readFileSync(inFile).toString().split('\n');
+
+if (process.argv[3] && !isNormalInteger(process.argv[3])) {
+	outFile = process.argv[3];
+	inc = process.argv[4] || 10;
+} else {
+	inc = process.argv[3] || 10;
+	p = inFile.lastIndexOf(".");
+	if (p<0) outFile = inFile + ".new";
+	else outFile = inFile.substring(0,p) + ".new" + inFile.substring(p);
+}
+console.log("File input: " + inFile);
+console.log("File output: " + outFile);
+console.log("Line increment: " + inc);
+
+
+var lines = [];
+var newLines = [];
+
+console.log("First pass ...");
+
+for (i=0, cnt=0; i< readlin.length; i++, cnt++) {
+	readlin[i] = readlin[i].replace('\r','').trim();
+	//console.log(i + "-" + cnt + ": '" + readlin[i] + "'");
+	if (readlin[i]!='') {
+		sp = readlin[i].indexOf(" ");			// first space
+		if (sp==0) sp = readlin[i].indexOf(" ",1);	
+		if (sp>=0) {
+			oldNum = parseInt(readlin[i].substring(0, sp));
+			code = readlin[i].substr(sp).trim();
+			newNum = (cnt+1)*inc;
+			lines.push({oldNum: oldNum, newNum: newNum, code: code, cnt: cnt});
+		}
+	} else cnt--;
+}
+
+if (debug) console.log(lines);
+
+//r = /(GOTO|GOSUB|THEN)(\s*)(\d+)(?:(\s*,\s*)(\d+))*/ig ;
+r = /\b(GO(?:TO|SUB)|THEN)(\s*)(\d+)((?:\s*,\s*\d+)*)/gi;
+r2 = /(\s*,)(\s*)(\d+)/gi
+
+console.log("Second pass & renumber ...");
+for (i=0; i<lines.length; i++) {
+	code = lines[i].code;
+	if (debug) {
+		console.log("       : 0         1         2         3         4         5         6         7 ");
+		console.log("       : 012345678901234567890123456789012345678901234567890123456789012345678901");
+		console.log("   CODE: " + code);
+	}
+	newCode = '';
+	cnt = 0;
+	cs = 0;
+	while ((match = r.exec(code)) != null) {
+		//console.log(match);
+		newCode = newCode + code.substring(cs, match.index);
+		if (debug) {
+			console.log("   FILL:" + (cs ? " " : "") + Array(cs).join("_") + ">" + code.substring(cs, match.index) + "<_______....");
+			console.log("  MATCH: " + Array(match.index+1).join(" ") + match[0]);
+			console.log("NEWCODE:'" + newCode + "'");
+		}
+		for (j=0; j<match.length; j++) {
+			if (typeof match[j] !== 'undefined' && j!=0) {
+				//console.log(j + ": " + match[j]);
+
+				if (isNormalInteger(match[j])) {
+					newCode = newCode  + findNewLine(match[j]);
+				} else {
+					var count = (match[j].match(/,/g) || []).length;		// let's find commas
+					if (count>=2) {
+						// we have to refine results ...
+						while ((match2 = r2.exec(match[j])) != null) {
+							for (k= 0; k<match2.length; k++) {
+								if (typeof match2[k] !== 'undefined' && k!=0) {
+									if (isNormalInteger(match2[k])) {
+										newCode = newCode + findNewLine(match2[k]);
+									} else {
+										//console.log ("MATCHK: '" + match2[k] + "'");
+										newCode = newCode + match2[k];
+									}
+								}
+							}
+						}
+					} else {
+						if (j!=0) newCode = newCode + match[j];	
+					}
+				}
+				if (debug) console.log("NEWCODE:'" + newCode + "'");
+			}
+		}
+		cs = match.index + match[0].length;
+		if (debug) console.log("         " + Array(cs+1).join(" ") + "^");
+		
+		
+		cnt++;
+	}
+	if (debug) console.log("  FINAL: " + newCode);
+	
+	if (newCode != '') {
+		lines[i].newCode = newCode;
+		newLines.push(lines[i].newNum + " " + lines[i].newCode);
+	} else {
+		newLines.push(lines[i].newNum + " " + lines[i].code);
+	}
+}
+
+console.log(newLines);
+
+
+fs.writeFile(outFile, newLines.join('\n'), function(err){
+	if(err) {
+		console.log(err)
+	} else {
+		console.log('File written!');
+	}
+});
+
+function findNewLine(oldNum) {
+
+	//console.log("Looking for " + oldNum);
+	for (var i=0; i<lines.length; i ++) {
+		//console.log(lines[i]);
+		if (lines[i].oldNum == oldNum) return lines[i].newNum;
+	}
+	return oldNum;
+}