From f5fdf2a9c078719afeab015fdbcc0a41972d50e9 Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Fri, 15 Feb 2013 11:42:52 -0600
Subject: [PATCH] clean up comments

---
 example/tput.js |  6 +++++
 lib/tput.js     | 67 ++++++++++++-------------------------------------
 2 files changed, 22 insertions(+), 51 deletions(-)
 create mode 100644 example/tput.js

diff --git a/example/tput.js b/example/tput.js
new file mode 100644
index 00000000..3d0d9749
--- /dev/null
+++ b/example/tput.js
@@ -0,0 +1,6 @@
+var Tput = require('../lib/tput');
+
+var tput = new Tput(process.argv[2] || 'xterm');
+tput.colors();
+
+console.log(tput.info);
diff --git a/lib/tput.js b/lib/tput.js
index b35079e1..937dc5d8 100644
--- a/lib/tput.js
+++ b/lib/tput.js
@@ -22,6 +22,10 @@ var assert = require('assert')
  */
 
 function Tput(term) {
+  if (!(this instanceof Tput)) {
+    return new Tput(term);
+  }
+
   this.term = term;
   this.data = null;
   this.info = {};
@@ -66,9 +70,6 @@ Tput.prototype.parseTermInfo = function(data) {
 
   i = h.headerSize;
 
-  // short int = 2 8bit bytes, first byte - least significant, second byte - most significant
-  // little endian
-
   // Names Section
   var names = data.toString('ascii', i, i + h.namesSize - 1)
     , parts = names.split('|')
@@ -84,14 +85,6 @@ Tput.prototype.parseTermInfo = function(data) {
   assert.equal(data[i], 0);
   i++;
 
-  // Might need to add another one here, without the extra bool defs there is 1 undefined.
-  // Example doesn't show this.
-  //i++;
-  //if (i % 2) {
-  //  assert.equal(data[i], 0);
-  //  i++;
-  //}
-
   // Booleans Section
   // One byte for each flag
   // Same order as <term.h>
@@ -104,7 +97,6 @@ Tput.prototype.parseTermInfo = function(data) {
   }
 
   // Null byte in between to make sure numbers begin on an even byte.
-  // Maybe subtract one from boolCount above and always do this instead.
   if (i % 2) {
     assert.equal(data[i], 0);
     i++;
@@ -123,14 +115,6 @@ Tput.prototype.parseTermInfo = function(data) {
     }
   }
 
-  // Null byte in between to make sure numbers begin on an even byte.
-  // Does it explicitly say to do this? tput does not seem to do this,
-  // but it seems to work on xterm (?).
-  //if (i % 2) {
-  //  assert.equal(data[i], 0);
-  //  i++;
-  //}
-
   // Strings Section
   info.strings = {};
   l = i + h.strCount * 2;
@@ -145,12 +129,9 @@ Tput.prototype.parseTermInfo = function(data) {
   }
 
   // String Table
-  // %p, %i, etc - parameters
-  // $<num> - padding
   Object.keys(info.strings).forEach(function(key) {
     if (info.strings[key] === -1) {
       delete info.strings[key];
-      //info.strings[key] = null;
       return;
     }
 
@@ -161,27 +142,25 @@ Tput.prototype.parseTermInfo = function(data) {
 
     if (s >= data.length || j > data.length) {
       delete info.strings[key];
-      //info.strings[key] = null;
       return;
     }
 
     info.strings[key] = data.toString('ascii', s, j);
   });
 
-  // Extended Header, +1 or -1, not sure.
-  i += h.strTableSize + 1;
-  l = data.length;
-  if (0)
-  if (i < l) {
-    info.extended = this.parseExtended(data.slice(i));
-    Object.keys(info.extended).forEach(function(key) {
-      info[key].extended = info.extended[key];
-    });
-    delete info.extended;
+  // Extended Header
+  if (this.extended) {
+    i += h.strTableSize + 1; // offset?
+    l = data.length;
+    if (i < l) {
+      info.extended = this.parseExtended(data.slice(i));
+      Object.keys(info.extended).forEach(function(key) {
+        info[key].extended = info.extended[key];
+      });
+      delete info.extended;
+    }
   }
 
-  console.log(info);
-
   return info;
 };
 
@@ -220,7 +199,6 @@ Tput.prototype.parseExtended = function(data) {
   }
 
   // Null byte in between to make sure numbers begin on an even byte.
-  // Maybe subtract one from boolCount above and always do this instead.
   if (i % 2) {
     assert.equal(data[i], 0);
     i++;
@@ -239,14 +217,6 @@ Tput.prototype.parseExtended = function(data) {
     }
   }
 
-  // Null byte in between to make sure numbers begin on an even byte.
-  // Does it explicitly say to do this? tput does not seem to do this,
-  // but it seems to work on xterm (?).
-  //if (i % 2) {
-  //  assert.equal(data[i], 0);
-  //  i++;
-  //}
-
   // Strings Section
   info.strings = {};
   l = i + h.strCount * 2;
@@ -261,12 +231,9 @@ Tput.prototype.parseExtended = function(data) {
   }
 
   // String Table
-  // %p, %i, etc - parameters
-  // $<num> - padding
   Object.keys(info.strings).forEach(function(key) {
     if (info.strings[key] === -1) {
       delete info.strings[key];
-      //info.strings[key] = null;
       return;
     }
 
@@ -277,7 +244,6 @@ Tput.prototype.parseExtended = function(data) {
 
     if (s >= data.length || j > data.length) {
       delete info.strings[key];
-      //info.strings[key] = null;
       return;
     }
 
@@ -1088,5 +1054,4 @@ Object.keys(Tput.prototype).forEach(function(key) {
   };
 });
 
-var tput = new Tput(process.argv[2] || 'xterm');
-tput.colors();
+module.exports = Tput;