From 5edb7e63303a109e25a574c1de816605e363027d Mon Sep 17 00:00:00 2001
From: Mikkel Hoegh <mikkel@hoegh.org>
Date: Sat, 20 Aug 2011 20:12:58 +0200
Subject: [PATCH] Initial version
MIME-Version: 1.0
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Rather naïve implementation of stringify only (no going back).
---
 README.md    | 13 +++++++++++++
 hstore.js    | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 package.json | 17 +++++++++++++++++
 3 files changed, 81 insertions(+)
 create mode 100644 README.md
 create mode 100644 hstore.js
 create mode 100644 package.json

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..1b89d15
--- /dev/null
+++ b/README.md
@@ -0,0 +1,13 @@
+hstore for Node.js
+==================
+
+[Node.js][] module for transforming JavaScript objects to [hstore][]
+format as used by [PostgreSQL][].
+
+This can be used to store key/value pairs in a format recognized by the
+database, so you can query them via SQL.
+
+[Node.js]: http://nodejs.org/
+[hstore]: http://www.postgresql.org/docs/current/interactive/hstore.html
+[PostgreSQL]: http://www.postgresql.org/
+
diff --git a/hstore.js b/hstore.js
new file mode 100644
index 0000000..ea22c57
--- /dev/null
+++ b/hstore.js
@@ -0,0 +1,51 @@
+/**
+ * Module for converting JavaScript objects to hstore format.
+ */
+
+var hstore = {};
+
+"use strict";
+
+/**
+ * Convert an arbitrary value to string.
+ */
+function convertToString(value) {
+  switch (typeof value) {
+    case 'boolean':
+      return String(value);
+    case 'null':
+      return 'NULL';
+    case 'number':
+      return isFinite(value) ? String(value) : 'NULL'
+    case 'string':
+      return quoteString(value);
+  }
+}
+
+/**
+ * Quote a string.
+ */
+function quoteString(string) {
+  // Naïve quoting of strings. Assumes there's not quotes in the string.
+  return '"' + string + '"';
+}
+
+/**
+ * Convert JavaScript object to hstore format.
+ */
+hstore.stringify = function (data) {
+  pairs = [];
+
+  Object.keys(data).forEach(function (key) {
+    var value = convertToString(data[key]);
+
+    if (value) {
+      pairs.push('"' + key + '"=>' + value);
+    }
+  });
+
+  return pairs.join();
+};
+
+module.exports = hstore;
+
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..6b51e67
--- /dev/null
+++ b/package.json
@@ -0,0 +1,17 @@
+{
+  "author": "Mikkel Hoegh <mikkel@hoegh.org> (http://mikkel.hoegh.org/)",
+  "name": "hstore",
+  "description": "Library for transforming JavaScript objects to hstore format, used by the PostgreSQL RDBMS.",
+  "keywords" : ["postgres", "postgre", "database", "rdbms"],
+  "main" : "hstore.js",
+  "version": "0.0.1",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/mikl/node-hstore.git"
+  },
+  "engines": {
+    "node": "~v0.4.10"
+  },
+  "dependencies": {},
+  "devDependencies": {}
+}