src: colorize output for findjsinstances

To make visualization easier, objects types, properties and addresses
will be colorized. Using `rang` library color pallete, the current
definition is:
* cyan for addresses
* magenta for objects being inspected
* yellow for types
* bold yellow for objects properties

Fixes: nodejs#179

Colorize findrefs output

PR-URL: nodejs#225
Reviewed-By: Matheus Marchini <[email protected]>

binding.gyp

@@ -79,6 +79,7 @@
       "src/llscan.cc",
       "src/node.cc",
       "src/node-constants.cc",
+      "src/settings.cc",
     ],
     "conditions": [
       [ "OS == 'win'", {
@@ -97,7 +98,7 @@
         "include_dirs": [
           "<!@(node -p \"require('node-addon-api').include\")"
         ],
-        "defines": [ "NAPI_DISABLE_CPP_EXCEPTIONS" ],
+        "defines": [ "NAPI_DISABLE_CPP_EXCEPTIONS", "NO_COLOR_OUTPUT" ],
         "sources": [
           "src/addon.cc",
           "src/llnode_module.cc",
@@ -108,6 +109,7 @@
           "src/llv8-constants.cc",
           "src/llscan.cc",
           "src/node-constants.cc",
+          "src/settings.cc",
         ],
         "cflags!": [ "-fno-exceptions" ],
         "cflags_cc!": [ "-fno-exceptions" ],

deps/rang/LICENSE

@@ -0,0 +1,24 @@
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <http://unlicense.org>

deps/rang/README.md

@@ -0,0 +1,159 @@
+# rang [![Build Status](https://travis-ci.org/agauniyal/rang.svg?branch=master)](https://travis-ci.org/agauniyal/rang) [![Build status](https://ci.appveyor.com/api/projects/status/jqpdoelli38h2a7w?svg=true)](https://ci.appveyor.com/project/agauniyal/rang) [![codecov](https://codecov.io/gh/agauniyal/rang/branch/master/graph/badge.svg)](https://codecov.io/gh/agauniyal/rang) [ ![Download](https://api.bintray.com/packages/agauniyal/rang/rang%3Arang/images/download.svg) ](https://bintray.com/agauniyal/rang/rang%3Arang/_latestVersion)
+
+##### Colors for your Terminal.
+
+![rang-demo](https://cloud.githubusercontent.com/assets/7630575/13501282/0bd00074-e18c-11e5-9848-5bd1f20566d9.gif)
+<details>
+ <summary>Windows Demo</summary>
+
+![rang-windows-demo](https://cloud.githubusercontent.com/assets/11349690/19836886/8134975e-9ebe-11e6-9ee4-c4657784ff3b.gif)
+</details>
+
+
+Example usage
+-------------
+
+```c++
+#include "rang.hpp"
+
+using namespace std;
+using namespace rang;
+
+int main()
+{
+    cout << "Plain old text"
+         << style::bold << "Rang styled text!!"
+         << style::reset << endl;
+}
+```
+
+Dependencies
+------------
+*rang* only depends on [C++ standard library](http://en.cppreference.com/w/cpp/header), `unistd.h` system header on unix and `windows.h` & `io.h` system headers on windows based systems. In other words, you don't need any 3rd party dependencies.
+
+
+Installation
+------------
+
+*rang* is a single header-only library. Put `rang.hpp` in the [include](include) folder directly into the project source tree or somewhere reachable from your project.
+
+Or, if you use the [conan package manager](https://www.conan.io/), follow these steps:
+
+1. Add a reference to *rang* to the *requires* section of your project's `conanfile.txt` file:
+
+        [requires]
+        rang/3.1.0@rang/stable
+
+2. Run conan's install command:
+
+        conan install
+
+
+## How to use
+
+*Rang* uses iostream objects - `cout`/`clog`/`cerr` to apply attributes to output text. Since *rang* aims to support both windows and unix like systems, it takes care of the os specific details and tries to provide a uniform interface. Due to incompatiblities b/w different OS versions, not all kinds of attributes are supported on every system so rang will try to skip the ones which might produce garbage(instead of pushing random ANSI escape codes on your streams). Detection of tty is also handled internally so you don't need to check if application user might redirect output to a file.
+
+> **Need support for non-ansi terminals? Check out [Termdb](https://github.com/agauniyal/termdb) which supports virtually all terminals and their capablities.**
+
+Apart from setting text attributes, you can also ask rang to override its default behaviour through these methods -
+```cpp
+void rang::setControlMode(rang::control);
+```
+where `rang::control` takes
+ - `control::Auto` - Automatically detects whether terminal supports color or not(**Default**)
+ - `control::Off` - Turn off colors completely
+ - `control::Force` - Force colors even if terminal doesn't supports them or output is redirected to non-terminal
+
+```cpp
+void rang::setWinTermMode(rang::winTerm);
+```
+where `rang::winTerm` takes
+ - `winTerm::Auto` - Checks for newer windows and picks Ansi otherwise falls back to Native(**Default**)
+ - `winTerm::Native` - This method is supported in all versions of windows but supports less attributes
+ - `winTerm::Ansi` - This method is supported in newer versions of windows and supports rich variety of attributes
+
+
+Supported attributes with their compatiblity are listed below -
+
+**Text Styles**:
+
+| Code | Linux/Win/Others | Old Win
+| ---- | --------- | ------ |
+| `rang::style::bold`      | yes   | yes   |
+| `rang::style::dim`       | yes   | no    |
+| `rang::style::italic`    | yes   | no    |
+| `rang::style::underline` | yes   | no    |
+| `rang::style::blink`     | no    | no    |
+| `rang::style::rblink`    | no    | no    |
+| `rang::style::reversed`  | yes   | yes   |
+| `rang::style::conceal`   | maybe | yes   |
+| `rang::style::crossed`   | yes   | no    |
+
+**Text Color**:
+
+| Code | Linux/Win/Others | Old Win
+| ---- | --------- | ------ |
+| `rang::fg::black`     | yes | yes |
+| `rang::fg::red`       | yes | yes |
+| `rang::fg::green`     | yes | yes |
+| `rang::fg::yellow`    | yes | yes |
+| `rang::fg::blue`      | yes | yes |
+| `rang::fg::magenta`   | yes | yes |
+| `rang::fg::cyan`      | yes | yes |
+| `rang::fg::gray`      | yes | yes |
+
+**Background Color**:
+
+| Code | Linux/Win/Others | Old Win
+| ---- | --------- | ------ |
+| `rang::bg::black`     | yes | yes |
+| `rang::bg::red`       | yes | yes |
+| `rang::bg::green`     | yes | yes |
+| `rang::bg::yellow`    | yes | yes |
+| `rang::bg::blue`      | yes | yes |
+| `rang::bg::magenta`   | yes | yes |
+| `rang::bg::cyan`      | yes | yes |
+| `rang::bg::gray`      | yes | yes |
+
+**Bright Foreground Color**:
+
+| Code | Linux/Win/Others | Old Win
+| ---- | --------- | ------ |
+| `rang::fgB::black`     | yes | yes |
+| `rang::fgB::red`       | yes | yes |
+| `rang::fgB::green`     | yes | yes |
+| `rang::fgB::yellow`    | yes | yes |
+| `rang::fgB::blue`      | yes | yes |
+| `rang::fgB::magenta`   | yes | yes |
+| `rang::fgB::cyan`      | yes | yes |
+| `rang::fgB::gray`      | yes | yes |
+
+**Bright Background Color**:
+
+| Code | Linux/Win/Others | Old Win
+| ---- | --------- | ------ |
+| `rang::bgB::black`     | yes | yes |
+| `rang::bgB::red`       | yes | yes |
+| `rang::bgB::green`     | yes | yes |
+| `rang::bgB::yellow`    | yes | yes |
+| `rang::bgB::blue`      | yes | yes |
+| `rang::bgB::magenta`   | yes | yes |
+| `rang::bgB::cyan`      | yes | yes |
+| `rang::bgB::gray`      | yes | yes |
+
+**Reset Styles/Colors**:
+
+| Code | Linux/Win/Others | Old Win
+| ---- | --------- | ------ |
+| `rang::style::reset`  | yes   | yes |
+| `rang::fg::reset`     | yes   | yes |
+| `rang::bg::reset`     | yes   | yes |
+
+-----
+## My terminal is not detected/gets garbage output!
+
+Check your env variable `TERM`'s value. Then open an issue [here](https://github.com/agauniyal/rang/issues/new) and make sure to mention `TERM`'s value along with your terminal name.
+
+## Redirecting `cout`/`cerr`/`clog` rdbuf?
+
+Rang doesn't interfere if you try to redirect `cout`/`cerr`/`clog` to somewhere else and leaves the decision to the library user. Make sure you've read this [conversation](https://github.com/agauniyal/rang/pull/77#issuecomment-360991652) and check out the example code [here](https://gist.github.com/kingseva/a918ec66079a9475f19642ec31276a21).