Mmdb support (#36)

* Introduce database format detector

* Move current codebase to legacy/

* Kinda works

* Going further

* Make it faster

* .. and even faster..

* Decoder test

* Make it faster

* fast

* Minor fixes in decoder

* Minor changes in ip parsing

* faster!

* bitAt

* 507k ops/s

* cleanup

* Cleanup file structure

* cleanup #2

* Lowercase files

* rename files

* going deeper

* Changing ip

* remove fn names

* stats notes

* remove sync suffix

* remove shit from index.js

* remove noise from decoder

* fastest

* cleanup

* remove unused var

* pointer experiment

* kinda works

* move metadata related code to metadata.js

* 0 and null

* Simplify 64 and 128 uints

* simplify bytes reading

* istanbul

* refactor small int + big int decoders

* add deps

* fix pre es6 syntax feature

* setup node version for travis

* fix tests under node 0.12

* legacy usage warning

* ip validator

* Allow cache configuration

* eslint

* fileStream => db

* move ip validation to ip.js

* istanbul config, better coverage

* update README.md

* remove unneeded dep

* error message for legacy database format

.eslintignore

@@ -0,0 +1 @@
+coverage

.eslintrc

@@ -0,0 +1,90 @@
+# borrowed from https://github.com/nodejs/node/blob/master/.eslintrc
+env:
+  node: true
+  mocha: true
+
+rules:
+  # Possible Errors
+  # http://eslint.org/docs/rules/#possible-errors
+  comma-dangle: [2, "only-multiline"]
+  no-control-regex: 2
+  no-debugger: 2
+  no-dupe-args: 2
+  no-dupe-keys: 2
+  no-duplicate-case: 2
+  no-empty-character-class: 2
+  no-ex-assign: 2
+  no-extra-boolean-cast: 2
+  no-extra-parens: [2, "functions"]
+  no-extra-semi: 2
+  no-func-assign: 2
+  no-invalid-regexp: 2
+  no-irregular-whitespace: 2
+  no-negated-in-lhs: 2
+  no-obj-calls: 2
+  no-proto: 2
+  no-unexpected-multiline: 2
+  no-unreachable: 2
+  use-isnan: 2
+  valid-typeof: 2
+
+  # Best Practices
+  # http://eslint.org/docs/rules/#best-practices
+  no-fallthrough: 2
+  no-multi-spaces: 2
+  no-octal: 2
+  no-redeclare: 2
+  no-self-assign: 2
+  no-unused-labels: 2
+
+  # Strict Mode
+  # http://eslint.org/docs/rules/#strict-mode
+  strict: [2, "global"]
+
+  # Variables
+  # http://eslint.org/docs/rules/#variables
+  no-delete-var: 2
+  no-undef: 2
+  no-unused-vars: [2, {"args": "none"}]
+
+  # Node.js and CommonJS
+  # http://eslint.org/docs/rules/#nodejs-and-commonjs
+  no-mixed-requires: 2
+  no-new-require: 2
+  no-path-concat: 2
+  no-restricted-modules: [2, "sys", "_linklist"]
+
+  # Stylistic Issues
+  # http://eslint.org/docs/rules/#stylistic-issues
+  comma-spacing: 2
+  eol-last: 2
+  indent: [2, 2, {SwitchCase: 1}]
+  key-spacing: [2, {mode: "minimum"}]
+  keyword-spacing: 2
+  linebreak-style: [2, "unix"]
+  max-len: [2, 120, 2]
+  new-parens: 2
+  no-mixed-spaces-and-tabs: 2
+  no-multiple-empty-lines: [2, {max: 2}]
+  no-trailing-spaces: 2
+  quotes: [2, "single", "avoid-escape"]
+  semi: 2
+  space-before-blocks: [2, "always"]
+  space-before-function-paren: [2, "never"]
+  space-in-parens: [2, "never"]
+  space-infix-ops: 2
+  space-unary-ops: 2
+
+  # ECMAScript 6
+  # http://eslint.org/docs/rules/#ecmascript-6
+  arrow-parens: [2, "always"]
+  arrow-spacing: [2, {"before": true, "after": true}]
+  constructor-super: 2
+  no-class-assign: 2
+  no-confusing-arrow: 2
+  no-const-assign: 2
+  no-dupe-class-members: 2
+  no-new-symbol: 2
+  no-this-before-super: 2
+  prefer-const: 2
+  template-curly-spacing: 2

.gitignore

@@ -1,5 +1,6 @@
-test/dbs/full
+benchmark/*.mmdb
 testing.js
 node_modules
 .DS_Store
 coverage
+npm-debug.log

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "test/data"]
+  path = test/data
+  url = https://github.com/maxmind/MaxMind-DB.git

.istanbul.yml

@@ -0,0 +1,39 @@
+verbose: false
+instrumentation:
+  root: .
+  extensions:
+    - .js
+  default-excludes: true
+  excludes: ["benchmark/*.js"]
+  embed-source: false
+  variable: __coverage__
+  compact: true
+  preserve-comments: true
+  complete-copy: false
+  save-baseline: false
+  baseline-file: ./coverage/coverage-baseline.json
+  include-all-sources: true
+  include-pid: false
+  es-modules: true
+reporting:
+  print: summary
+  reports:
+    - lcov
+  dir: ./coverage
+  watermarks:
+    statements: [80, 95]
+    lines: [80, 95]
+    functions: [80, 95]
+    branches: [80, 95]
+hooks:
+  hook-run-in-context: false
+  post-require-hook: null
+  handle-sigint: false
+
+check:
+  global:
+    statements: 96
+    lines: 96
+    branches: 85
+    functions: 100
+    excludes: []

.npmignore

@@ -1,4 +1,3 @@
-test/dbs
+benchmark/*.mmdb
 coverage
-testing.js
 .DS_Store

.travis.yml

@@ -1,4 +1,6 @@
 language: node_js
 node_js:
   - "0.10"
-  - "0.11"
+  - "0.12"
+  - "4.4"
+  - "6.2"

CONTRIBUTING.md

@@ -0,0 +1,14 @@
+
+## Contributing
+
+Make sure you run `npm i` command in the project's dir before you begin, it'll install all dev dependencies. Currently
+code coverage is about **85%**, so new tests are essential when you add new functionality. There're several npm tasks
+which you can find useful:
+
+- `npm test` runs tests
+- `npm run lint` runs js linter
+- `npm run coverage` runs code coverage task and generates a report
+- `npm run benchmark` runs performance benchmark
+
+One pull request per one feature, nothing unusual.
+

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2014 Dmitry Shirokov
+Copyright (c) 2016 Dmitry Shirokov
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in