fix of post formatting

js/twister_formatpost.js

@@ -198,33 +198,32 @@ function dmDataToConversationItem(dmData, localUser, remoteUser) {
 
 // convert message text to html, featuring @users and links formating.
 function htmlFormatMsg(msg, mentions) {
-    function getStrStart(str, i, stopChars) {
-        for (; i > -1; i--) {
+    function getStrStart(str, startPoint, stopChars, stopCharsTrailing) {
+        for (var i = startPoint; i > -1; i--) {
             if (stopChars.indexOf(str[i]) > -1)
-                return i + 1;
+                break;
         }
 
-        return 0;
+        for (i += 1; i < startPoint + 1; i++) {
+            if (stopCharsTrailing.indexOf(str[i]) === -1)
+                break;
         }
 
-    function getStrEnd(str, i, stopChars) {
-        for (; i < str.length; i++) {
-            if (stopChars.indexOf(str[i]) > -1)
-                return i - 1;
+        return i;
     }
 
-        return str.length;
+    function getStrEnd(str, startPoint, stopChars, stopCharsTrailing) {
+        for (var i = startPoint; i < str.length; i++) {
+            if (stopChars.indexOf(str[i]) > -1)
+                break;
         }
 
-    function extractStr(str, startPoint, endPoint, stopChars) {
-        for (var i = endPoint; i > startPoint - 1; i--) {
-            if (stopChars.indexOf(str[i]) === -1) {
-                endPoint = i;
+        for (i -= 1; i > startPoint - 1; i--) {
+            if (stopCharsTrailing.indexOf(str[i]) === -1)
                 break;
         }
-        }
 
-        return str.slice(startPoint, endPoint + 1);
+        return i;
     }
 
     function htmlSplitCounter(str) {
@@ -237,8 +236,9 @@ function htmlFormatMsg(msg, mentions) {
     var stopCharsTrailing = '/\\.,:;?!*%\'"[](){}^|«»…\u201C\u201D\u2026\u2014\u4E00\u3002\uFF0C\uFF1A\uFF1F\uFF01\u3010\u3011';
     var stopCharsTrailingUrl = stopCharsTrailing.slice(1);
     var whiteSpaces = ' \f\n\r\t\v​\u00A0\u1680\u180E\u2000​\u2001\u2002​\u2003\u2004\u2005\u2006​\u2007\u2008​\u2009\u200A\u2028\u2029​\u202F\u205F\u3000';
-    var stopCharsRight = '>' + whiteSpaces;
     var stopCharsLeft = '<' + whiteSpaces;
+    var stopCharsRight = '>' + whiteSpaces;
+    var stopCharsRightHashtags = stopCharsRight + stopCharsTrailing;
     var j, str, strEncoded;
     var html = [];
 
@@ -247,7 +247,9 @@ function htmlFormatMsg(msg, mentions) {
     for (var i = 0; i < msg.length - 7; i++) {
         if (msg.slice(i, i + 4).toLowerCase() === 'http') {
             if (msg.slice(i + 4, i + 7) === '://' && stopCharsRight.indexOf(msg[i + 7]) === -1) {
-                str = extractStr(msg, i, getStrEnd(msg, i + 7, stopCharsRight), stopCharsTrailingUrl);
+                j = getStrEnd(msg, i + 7, stopCharsRight, stopCharsTrailingUrl);
+                if (j > i + 6) {
+                    str = msg.slice(i, j + 1);
                     // FIXME we're trying to not interact with DOM, coz' we want to run really fast [to hell of RegExps]
                     // FIXME actually we should avoid it by dropping a template idea and construct html right here
                     html.push($('#external-page-link-template')[0].outerHTML
@@ -259,8 +261,11 @@ function htmlFormatMsg(msg, mentions) {
                     strEncoded = '>' + (html.length - 1).toString() + '<';
                     msg = msg.slice(0, i) + strEncoded + msg.slice(i + str.length);
                     i = i + strEncoded.length - 1;
+                }
             } else if (msg.slice(i + 4, i + 8).toLowerCase() === 's://' && stopCharsRight.indexOf(msg[i + 8]) === -1) {
-                str = extractStr(msg, i, getStrEnd(msg, i + 8, stopCharsRight), stopCharsTrailingUrl);
+                j = getStrEnd(msg, i + 8, stopCharsRight, stopCharsTrailingUrl);
+                if (j > i + 7) {
+                    str = msg.slice(i, j + 1);
                     html.push($('#external-page-link-template')[0].outerHTML
                         .replace(/\bid\s*=\s*"[^]*?"+/ig, '')  // $().removeAttr('id')
                         //.replace(/\bhref\s*=\s*"[^]*?"+/ig, '')  // $().removeAttr('href')
@@ -273,12 +278,16 @@ function htmlFormatMsg(msg, mentions) {
                 }
             }
         }
+    }
 
     for (var i = 1; i < msg.length - 1; i++) {
         if (msg[i] === '@' && stopCharsLeft.indexOf(msg[i - 1]) === -1
             && stopCharsTrailing.indexOf(msg[i - 1]) === -1 && stopCharsRight.indexOf(msg[i + 1]) === -1) {
-            j = getStrStart(msg, i, stopCharsLeft);
-            str = extractStr(msg, j, getStrEnd(msg, i + 1, stopCharsRight), stopCharsTrailing);
+            j = getStrStart(msg, i - 1, stopCharsLeft, stopCharsTrailing);
+            if (j < i) {
+                var k = getStrEnd(msg, i + 1, stopCharsRight, stopCharsTrailing);
+                if (k > i) {
+                    str = msg.slice(j, k + 1);
                     html.push($('#external-page-link-template')[0].outerHTML
                         .replace(/\bid\s*=\s*"[^]*?"+/ig, '')  // $().removeAttr('id')
                         //.replace(/\bhref\s*=\s*"[^]*?"+/ig, '')  // $().removeAttr('href')
@@ -290,6 +299,8 @@ function htmlFormatMsg(msg, mentions) {
                     i = j + strEncoded.length - 1;
                 }
             }
+        }
+    }
 
     for (var i = 0; i < msg.length - 1; i++) {
         if (msg[i] === '@' && mentionsChars.indexOf(msg[i + 1].toLowerCase()) > -1) {
@@ -312,9 +323,10 @@ function htmlFormatMsg(msg, mentions) {
     }
 
     for (var i = 0; i < msg.length - 1; i++) {
-        j = i + 1;
-        if (msg[i] === '#' && msg[j] !== '#' && stopCharsRight.indexOf(msg[j]) === -1) {
-            str = extractStr(msg, j, getStrEnd(msg, j, '/' + stopCharsRight), stopCharsTrailing);
+        if (msg[i] === '#' && msg[i + 1] !== '#' && stopCharsRight.indexOf(msg[i + 1]) === -1) {
+            j = getStrEnd(msg, i + 1, stopCharsRightHashtags, stopCharsTrailing);
+            if (j > i) {
+                str = msg.slice(i + 1, j + 1);
                 html.push($('#hashtag-link-template')[0].outerHTML
                     .replace(/\bid\s*=\s*"[^]*?"+/ig, '')  // $().removeAttr('id')
                     //.replace(/\bhref\s*=\s*"[^]*?"+/ig, '')  // $().removeAttr('href')
@@ -326,17 +338,23 @@ function htmlFormatMsg(msg, mentions) {
                 i = i + strEncoded.length - 1;
             }
         }
+    }
 
     msg = msg
         .replace(/\(\d{1,2}\/\d{1,2}\)$/, htmlSplitCounter)
-        .replace(/&(?!lt;|gt;|quot;|apos;)/g, '&amp;')  // FIXME in many cases there is no need to escape ampersand in HTML 5
+        .replace(/&(?!lt;|gt;)/g, '&amp;')  // FIXME in many cases there is no need to escape ampersand in HTML 5
+        .replace(/"/g, '&quot;')
+        .replace(/'/g, '&apos;')
     ;
 
     for (var i = 0; i < msg.length - 2; i++) {
         if (msg[i] === '>') {
-            j = getStrEnd(msg, i + 2, '<');
-            str = html[parseInt(msg.slice(i + 1, j + 1))];
-            msg = msg.slice(0, i) + str + msg.slice(j + 2);
+            for (var j = i + 2; j < msg.length; j++) {
+                if (msg[j] === '<')
+                    break;
+            }
+            str = html[parseInt(msg.slice(i + 1, j))];
+            msg = msg.slice(0, i) + str + msg.slice(j + 1);
             i = i + str.length - 1;
         }
     }
@@ -373,8 +391,9 @@ function escapeHtmlEntities(str) {
         //.replace(/&/g, '&amp;') we do it not here
         .replace(/</g, '&lt;')
         .replace(/>/g, '&gt;')
-                .replace(/"/g, '&quot;')
-                .replace(/'/g, '&apos;');
+        //.replace(/"/g, '&quot;')
+        //.replace(/'/g, '&apos;')
+    ;
 }
 
 function reverseHtmlEntities(str) {