Split out HTML writer from HTML generator

1 files changed, 58 insertions, 0 deletions

diff --git a/lib/html-writer.js b/lib/html-writer.js
new file mode 100644
index 0000000..d2fb67b
--- /dev/null
+++ b/lib/html-writer.js
@@ -0,0 +1,58 @@
+var util = require("util");
+var _ = require("underscore");
+
+exports.writer = writer;
+
+function writer() {
+    var fragments = [];
+    
+    function open(tagName, attributes) {
+        var attributeString = generateAttributeString(attributes)
+        fragments.push(util.format("<%s%s>", tagName, attributeString));
+    }
+    
+    function close(tagName) {
+        fragments.push(util.format("</%s>", tagName));
+    }
+    
+    function selfClosing(tagName, attributes) {
+        var attributeString = generateAttributeString(attributes)
+        fragments.push(util.format("<%s%s />", tagName, attributeString));
+    }
+    
+    function generateAttributeString(attributes) {
+        return _.map(attributes, function(value, key) {
+            return util.format(' %s="%s"', key, escapeHtml(value));
+        }).join("");
+    }
+    
+    function text(value) {
+        fragments.push(escapeHtml(value))
+    }
+    
+    function append(html) {
+        fragments.push(html);
+    }
+    
+    function asString() {
+        return fragments.join("");
+    }
+    
+    return {
+        asString: asString,
+        open: open,
+        close: close,
+        text: text,
+        selfClosing: selfClosing,
+        append: append
+    };
+}
+
+
+function escapeHtml(value) {
+    return value
+        .replace(/&/g, '&amp;')
+        .replace(/"/g, '&quot;')
+        .replace(/</g, '&lt;')
+        .replace(/>/g, '&gt;');
+}