init commit

1 files changed, 28 insertions, 0 deletions

diff --git a/meta.py b/meta.py
new file mode 100644
index 0000000..7bb948d
--- /dev/null
+++ b/meta.py
@@ -0,0 +1,28 @@
+from collections import OrderedDict, deque, namedtuple
+import shlex
+
+Meta = namedtuple('Meta', ['sects', 'meta'])
+
+def _merge(l):
+    return ''.join(l).strip()
+def _next(l):
+    sect = deque()
+    while l and not l[0].strip().startswith('$'):
+        sect.append(l.popleft())
+    if not l:
+        return (('TRAIL', _merge(sect)), l)
+    name = l.popleft().strip()[1:]
+    sect = _merge(sect)
+    return ((name, sect), l)
+def parse(s):
+    l = deque(s.splitlines(True))
+    meta = dict()
+    sects = OrderedDict()
+    while l and l[0].strip().startswith('$'):
+        s = shlex.split(l[0][1:])
+        meta[s[0]] = s[1:]
+        l.popleft()
+    while l:
+        s, l = _next(l)
+        sects[s[0]] = s[1]
+    return Meta(sects, meta)