Add preliminary initial scenario

1 files changed, 27 insertions, 0 deletions

diff --git a/yarnstep.py b/yarnstep.py
index 1935cc6..30ccae1 100644
--- a/yarnstep.py
+++ b/yarnstep.py
@@ -58,3 +58,30 @@ def iter_over_files(root):
 def cat(filename):
     with open(filename) as f:
         return f.read()
+
+
+def write_file(filename, data):
+    dirname = os.path.dirname(filename)
+    if not os.path.exists(dirname):
+        os.makedirs(dirname)
+    with open(filename, 'w') as f:
+        f.write(data)
+
+
+def unescape_backslashes(s):
+    result = ''
+    while s:
+        if s.startswith('\\') and len(s) > 1:
+            result += unescape_char(s[1])
+            s = s[2:]
+        else:
+            result += s[0]
+            s = s[1:]
+    return result
+
+
+def unescape_char(c):
+    table = {
+        'n': '\n',
+    }
+    return table.get(c, c)