rewrap text

quote.js

@@ -2,17 +2,16 @@
 
 	var validquotechars = ['>'];
 
-
 	var quoteline = function(line, maxlength, qc) {
 		if (line.length > maxlength) {
-			var lastspace = line.lastIndexOf(' ', maxlength);
+			var lastspace = line.lastIndexOf(' ', maxlength - 1);
 			if (lastspace != -1) {
 				line = line.substr(0, lastspace) + '\n' + quoteline(line.substr(lastspace + 1), maxlength, qc);
 			}
 		}
 
 		//this must be after the code before, because this inserts a space in the string
-		return qc + ' ' + line;
+		return qc + line.trimRight();
 	};
 
 
@@ -24,22 +23,75 @@
 			length = 75;
 		}
 
-		var quoted = text.split('\n').map(function(v, i) {
+		//cut the signature
-			//if this is already quoted text, return it as is
+		var signPosition = text.lastIndexOf('-- ');
-			if (validquotechars.indexOf(v.charAt(0)) > -1) {
+		if (signPosition > 0) {
-				return v;
+			text = text.substr(0, signPosition);
 		}
 
-			return quoteline(v, length, quotechar);
+		var quoted = text.split('\n').map(function(v, i) {
+			//if this is already quoted text, return it as is,
+			//but trim the right spaces (thunderbird does this)
+			if (validquotechars.indexOf(v.charAt(0)) > -1) {
+				return quotechar + v.trimRight();
+			}
+
+			return quoteline(v, length, quotechar + ' ');
 		}).join('\n');
 
+		//remove eventual '> ' from the end of the quoted text
+		var bsa = quoted.split('\n');
+		var fixlastlines = function() {
+			if (bsa[bsa.length -1] === '> ') {
+				bsa.splice(-1,1);
+				quoted = bsa.join('\n') + '\n';
+				fixlastlines();
+			}
+		};
+		fixlastlines();
+
 		return quoted;
 	};
 
+
+	var rewrapper = function(line, maxlength) {
+		if (line.length > maxlength) {
+			var lastspace = line.lastIndexOf(' ', maxlength - 1);
+			if (lastspace != -1) {
+				line = line.substr(0, lastspace) + ' \n' + rewrapper(line.substr(lastspace + 1), maxlength);
+			}
+		}
+
+		//this must be after the code before, because this inserts a space in the string
+		return line;
+	};
+
+	var rewrap = function(text, length) {
+		if (typeof(length) === 'undefined') {
+			length = 75;
+		}
+
+		var rewrapped = text.split('\n').map(function(v, i) {
+			//if this is already quoted text, return it as is,
+			//but trim the right spaces (thunderbird does this)
+			if (validquotechars.indexOf(v.charAt(0)) > -1) {
+				return v.trimRight();
+			}
+
+			return rewrapper(v, length);
+		}).join('\n');
+
+		return rewrapped;
+	};
+
+	var e = {
+		quote: quote,
+		rewrap: rewrap
+	};
 	if (typeof(window) === 'undefined') {
-		module.exports = quote;
+		module.exports = e;
 	} else {
-		window.quote = quote;
+		window.quote = e;
 	}
 
 })();

tests.js

@@ -1,5 +1,8 @@
-var quote = require('./quote.js');
+var quote = require('./quote.js').quote;
+var rewrap = require('./quote.js').rewrap;
 
+
+//my awesome test framework
 var test = function(name, what, ref, c) {
 	process.stdout.write(name);
 
@@ -18,13 +21,15 @@ var test = function(name, what, ref, c) {
 		process.stdout.write(' ✓');
 	} else {
 		process.stdout.write(' ⛝\n');
-		process.stdout.write('    ----> expected | ' + ref + '\n');
+		process.stdout.write('    ----> expected | ' + ref.replace(/ /g, '·') + '\n');
-		process.stdout.write('    ----> got      | ' + what + '\n');
+		process.stdout.write('    ----> got      | ' + what.replace(/ /g, '·') + '\n');
 	}
 	process.stdout.write('\n');
 };
 
 
+
+//quote tests
 test('simple short text',
 	quote('simple short text'),
 	'> simple short text'
@@ -32,7 +37,7 @@ test('simple short text',
 
 test('an already quoted line',
 	quote('> simple short text'),
-	'> simple short text'
+	'>> simple short text'
 );
 
 test('a line longer than 75 chars with no spaces',
@@ -57,6 +62,86 @@ test('three lines, one long line, two with a hard break in between',
 	'> 1234567890 1234567890 1234567890 1234567890 1234567890 1234567890\n' +
 	'> 1234567890 1234567890\n' +
 	'> 1234567890 1234567890 1234567890 1234567890\n' +
-	'> 1234567890 1234567890 1234567890 1234567890\n' +
+	'> 1234567890 1234567890 1234567890 1234567890\n'
-	'> '
+);
+
+test('three lines, one long line with a soft breake, two with a hard break in between',
+	quote('1234567890 1234567890 1234567890 1234567890 1234567890 1234567890 \n1234567890 1234567890\n' +
+		'1234567890 1234567890 1234567890 1234567890\n' +
+		'1234567890 1234567890 1234567890 1234567890\n'),
+	'> 1234567890 1234567890 1234567890 1234567890 1234567890 1234567890\n' +
+	'> 1234567890 1234567890\n' +
+	'> 1234567890 1234567890 1234567890 1234567890\n' +
+	'> 1234567890 1234567890 1234567890 1234567890\n'
+);
+
+
+
+var mail =
+	"Il 15/04/15 12:39, Fabri / Joker197cinque ha scritto:\n" +
+	"> minchius_maximus wrote on 15/04/2015 :\n" +
+	">\n" +
+	">> (finito il main e due dlc su tre)\n" +
+	">\n" +
+	"> Abbracciamocih.\n" +
+	">\n" +
+	"\n" +
+	"sisi, avevo letto che anche tu ti eri fermato al secondo...\n" +
+	"ma, dopo aver fatto i primi due mi ero dedicato ad un sano e buon PVP \n" +
+	"nella covenant del drago... quante mazzate, ma divertente...\n" +
+	"\n" +
+	"sto scholar mi sta facendo calare l'hype...\n" +
+	"\n" +
+	"-- \n" +
+	"minchius_maximus";
+
+var correctly_quoted =
+	"> Il 15/04/15 12:39, Fabri / Joker197cinque ha scritto:\n" +
+	">> minchius_maximus wrote on 15/04/2015 :\n" +
+	">>\n" +
+	">>> (finito il main e due dlc su tre)\n" +
+	">>\n" +
+	">> Abbracciamocih.\n" +
+	">>\n" +
+	"> \n" +
+	"> sisi, avevo letto che anche tu ti eri fermato al secondo...\n" +
+	"> ma, dopo aver fatto i primi due mi ero dedicato ad un sano e buon PVP\n" +
+	"> nella covenant del drago... quante mazzate, ma divertente...\n" +
+	"> \n" +
+	"> sto scholar mi sta facendo calare l'hype...\n";
+
+test('a long real email with a signature',
+	quote(mail),
+	correctly_quoted
+);
+
+
+
+
+//rewrap tests
+test('rewrap long text',
+		rewrap('1234567890 1234567890 1234567890 1234567890 1234567890 1234567890 1234567890 1234567890 ', 75, ''),
+		'1234567890 1234567890 1234567890 1234567890 1234567890 1234567890 \n1234567890 1234567890 '
+	);
+
+var mailrewrap =
+	"Il 15/04/15 12:39, Fabri / Joker197cinque ha scritto:\n" +
+	"> minchius_maximus wrote on 15/04/2015 :\n" +
+	">\n" +
+	">> (finito il main e due dlc su tre)\n" +
+	">\n" +
+	"> Abbracciamocih.\n" +
+	">\n" +
+	"\n" +
+	"sisi, avevo letto che anche tu ti eri fermato al secondo...\n" +
+	"ma, dopo aver fatto i primi due mi ero dedicato ad un sano e buon PVP nella covenant del drago... quante mazzate, ma divertente...\n" +
+	"\n" +
+	"sto scholar mi sta facendo calare l'hype...\n" +
+	"\n" +
+	"-- \n" +
+	"minchius_maximus";
+
+test('rewrap long text with something quoted before',
+		rewrap(mailrewrap),
+		mail
 	);