1 files changed, 36 insertions, 0 deletions
diff --git a/lib/parse/findParsableFile.js b/lib/parse/findParsableFile.js
new file mode 100644
index 0000000..4434d64
--- /dev/null
+++ b/lib/parse/findParsableFile.js
@@ -0,0 +1,36 @@
+var path = require('path');
+
+var Promise = require('../utils/promise');
+var parsers = require('../parsers');
+
+/**
+    Find a file parsable (Markdown or AsciiDoc) in a book
+
+    @param {Book} book
+    @param {String} filename
+    @return {Promise<>}
+*/
+function findParsableFile(book, filename) {
+    var fs = book.getContentFS();
+    var ext = path.extname(filename);
+    var basename = path.basename(filename, ext);
+    var basedir = path.dirname(filename);
+
+    // Ordered list of extensions to test
+    var exts = parsers.extensions;
+
+    return Promise.some(exts, function(ext) {
+        var filepath = basename + ext;
+
+        return fs.findFile(basedir, filepath)
+        .then(function(found) {
+            if (!found || book.isContentFileIgnored(found)) {
+                return undefined;
+            }
+
+            return fs.statFile(found);
+        });
+    });
+}
+
+module.exports = findParsableFile;