1 files changed, 55 insertions, 0 deletions
diff --git a/lib/crow/amalgamate/merge_all.py b/lib/crow/amalgamate/merge_all.py
new file mode 100644
index 0000000..afa0124
--- /dev/null
+++ b/lib/crow/amalgamate/merge_all.py
@@ -0,0 +1,55 @@
+"""Merges all the header files."""
+from glob import glob
+from os import path as pt
+import re
+from collections import defaultdict
+import sys
+
+header_path = "../include"
+if len(sys.argv) > 1:
+    header_path = sys.argv[1]
+
+OUTPUT = 'crow_all.h'
+re_depends = re.compile('^#include "(.*)"', re.MULTILINE)
+headers = [x.rsplit('/', 1)[-1] for x in glob(pt.join(header_path, '*.h*'))]
+headers += ['crow/' + x.rsplit('/', 1)[-1] for x in glob(pt.join(header_path, 'crow/*.h*'))]
+print(headers)
+edges = defaultdict(list)
+for header in headers:
+    d = open(pt.join(header_path, header)).read()
+    match = re_depends.findall(d)
+    for m in match:
+        # m should included before header
+        edges[m].append(header)
+
+visited = defaultdict(bool)
+order = []
+
+
+def dfs(x):
+    """Ensure all header files are visited."""
+    visited[x] = True
+    for y in edges[x]:
+        if not visited[y]:
+            dfs(y)
+    order.append(x)
+
+for header in headers:
+    if not visited[header]:
+        dfs(header)
+
+order = order[::-1]
+for x in edges:
+    print(x, edges[x])
+for x in edges:
+    for y in edges[x]:
+        assert order.index(x) < order.index(y), 'cyclic include detected'
+
+print(order)
+build = []
+for header in order:
+    d = open(pt.join(header_path, header)).read()
+    build.append(re_depends.sub(lambda x: '\n', d))
+    build.append('\n')
+
+open(OUTPUT, 'w').write('\n'.join(build))