function keypress()

in webconsole/gogo/src/main/resources/res/ui/gogo.js [100:197]
88 lines of code
68 McCabe index (conditional complexity)

   function keypress(ev, fromkeydown) {
        // Translate to standard keycodes
        if (!ev)
            ev = window.event;
        var kc;
        if (ev.keyCode)
            kc = ev.keyCode;
        if (!fromkeydown && ev.which)
            kc = ev.which;
        if (ev.ctrlKey) {
            if (kc >= 0 && kc <= 32)
                kc = kc;
            else if (kc >= 65 && kc <= 90)
                kc -= 64;
            else if (kc >= 97 && kc <= 122)
                kc -= 96;
            else {
                switch (kc) {
                    case 54:  kc=30; break;	// Ctrl-^
                    case 109: kc=31; break;	// Ctrl-_
                    case 219: kc=27; break;	// Ctrl-[
                    case 220: kc=28; break;	// Ctrl-\
                    case 221: kc=29; break;	// Ctrl-]
                    default: return true;
                }
            }
        } else if (fromkeydown) {
            switch(kc) {
                case 8: break;			     // Backspace
                case 9: break;               // Tab
                case 27: break;			     // ESC
                case 33:  kc = 63276; break; // PgUp
                case 34:  kc = 63277; break; // PgDn
                case 35:  kc = 63275; break; // End
                case 36:  kc = 63273; break; // Home
                case 37:  kc = 63234; break; // Left
                case 38:  kc = 63232; break; // Up
                case 39:  kc = 63235; break; // Right
                case 40:  kc = 63233; break; // Down
                case 45:  kc = 63302; break; // Ins
                case 46:  kc = 63272; break; // Del
                case 112: kc = 63236; break; // F1
                case 113: kc = 63237; break; // F2
                case 114: kc = 63238; break; // F3
                case 115: kc = 63239; break; // F4
                case 116: kc = 63240; break; // F5
                case 117: kc = 63241; break; // F6
                case 118: kc = 63242; break; // F7
                case 119: kc = 63243; break; // F8
                case 120: kc = 63244; break; // F9
                case 121: kc = 63245; break; // F10
                case 122: kc = 63246; break; // F11
                case 123: kc = 63247; break; // F12
                default: return true;
            }
        }

        var k = "";
        // Build character
        switch (kc) {
            case 126:   k = "~~"; break;
            case 63232: k = "~A"; break; // Up
            case 63233: k = "~B"; break; // Down
            case 63234: k = "~D"; break; // Left
            case 63235: k = "~C"; break; // Right
            case 63276: k = "~1"; break; // PgUp
            case 63277: k = "~2"; break; // PgDn
            case 63273: k = "~H"; break; // Home
            case 63275: k = "~F"; break; // End
            case 63302: k = "~3"; break; // Ins
            case 63272: k = "~4"; break; // Del
            case 63236: k = "~a"; break; // F1
            case 63237: k = "~b"; break; // F2
            case 63238: k = "~c"; break; // F3
            case 63239: k = "~d"; break; // F4
            case 63240: k = "~e"; break; // F5
            case 63241: k = "~f"; break; // F6
            case 63242: k = "~g"; break; // F7
            case 63243: k = "~h"; break; // F8
            case 63244: k = "~i"; break; // F9
            case 63245: k = "~j"; break; // F10
            case 63246: k = "~k"; break; // F11
            case 63247: k = "~l"; break; // F12
            default:    k = String.fromCharCode(kc); break;
        }

//        debug("fromkeydown=" + fromkeydown + ", ev.keyCode=" + ev.keyCode + ", " +
//              "ev.which=" + ev.which + ", ev.ctrlKey=" + ev.ctrlKey + ", " +
//              "kc=" + kc + ", k=" + k);

        queue(encodeURIComponent(k));

        ev.cancelBubble = true;
        if (ev.stopPropagation) ev.stopPropagation();
        if (ev.preventDefault) ev.preventDefault();

        return true;
   }