[misc] 01/03: has-only: looking at parsing dbdtxt back to diff

[Chris West]

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faux-guest pushed a commit to branch master
in repository misc.

commit 4e54f61408f351ac7a60e46fc138e78c538d9f13
Author: Chris West (Faux) <git at goeswhere.com>
Date:   Sun Apr 16 16:53:23 2017 +0100

    has-only: looking at parsing dbdtxt back to diff
---
 has-only.py | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/has-only.py b/has-only.py
new file mode 100755
index 0000000..9bde9bd
--- /dev/null
+++ b/has-only.py
@@ -0,0 +1,50 @@
+#!/usr/bin/python3
+
+import sys
+import re
+
+def bodies():
+    for path in sys.argv[1:]:
+        with open(path) as f:
+            yield (path, f.readlines())
+
+DO_FILE_PREFIX = '├── '
+DO_DIFF_PREFIX = re.compile('(?:│ )+([+-])(.*)')
+
+def diff_parse(lines):
+    file = None
+    in_add = False
+    replacing = []
+    replacement = []
+
+    for line in lines + ['\n']:
+        if line.startswith(DO_FILE_PREFIX):
+            file = line[len(DO_FILE_PREFIX):].strip()
+            continue
+        ma = DO_DIFF_PREFIX.match(line)
+        if ma:
+            adding = ma.group(1) == '+'
+            data = ma.group(2)
+            if not adding:
+                if replacement:
+                    yield (file, replacing, replacement)
+                    replacing = []
+                    replacement = []
+                replacing.append(data)
+            else:
+                replacement.append(data)
+            continue
+
+        if replacing or replacement:
+            yield (file, replacing, replacement)
+            replacing = []
+            replacement = []
+
+
+def main():
+    for name, lines in bodies():
+        print(name, list(diff_parse(lines)))
+
+
+if '__main__' == __name__:
+    main()

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